CN108954602A - Air conditioning system and control method thereof - Google Patents
Air conditioning system and control method thereof Download PDFInfo
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- CN108954602A CN108954602A CN201810427318.6A CN201810427318A CN108954602A CN 108954602 A CN108954602 A CN 108954602A CN 201810427318 A CN201810427318 A CN 201810427318A CN 108954602 A CN108954602 A CN 108954602A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims abstract description 89
- 238000010438 heat treatment Methods 0.000 claims abstract description 86
- 238000010257 thawing Methods 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims description 37
- 238000005485 electric heating Methods 0.000 claims description 17
- 238000005057 refrigeration Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides an air conditioning system and a control method of the air conditioning system. Air conditioning system is including setting gradually indoor set, compressor, off-premises station and the throttling element on same return circuit, and air conditioning system still includes: a first heating device openably and closably provided on a pipe between the compressor and the outdoor unit; the first refrigerant pipe is connected with the throttling element in parallel; the second heating device is arranged on the first refrigerant pipe in an openable and closable manner; and the control assembly is used for controlling the refrigerant in the air conditioning system to flow through the throttling element or the first refrigerant pipe. The invention can ensure that the refrigerant flowing into the compressor is in a gaseous state, ensure the suction superheat degree of the compressor, prevent the danger of liquid-carrying operation of the compressor, and ensure that the indoor unit can continuously supply heat to the indoor space while defrosting.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of air-conditioning system and the control method of air-conditioning system.
Background technique
In temperature low cold season, there is the phenomenon that frosting icing in the outer chance of air-conditioning system, and air-conditioning is during the cold season
When heating operation, the heating effect of air-conditioning will affect.
Currently, there are many modes to defrost for air-conditioning system, but they cannot all continue heat supply during defrosting, and effect is all
It is less desirable, in order to preferably solve the problems, such as these, comfort is preferably heated to user, is badly in need of being arranged one in the market
Kind can be also very important during defrosting to the Defrost mode of indoor holding stable heating.
Current refrigeration cycle Defrost mode, indoor can be such that indoor temperature reduces as evaporator, reduce heating effect
Fruit；Although hot gas defrosting mode is not absorbed heat from indoor, although expansion valve standard-sized sheet, the phenomenon that also having reducing pressure by regulating flow, compression
There is the danger run with liquid in chance, effect is also bad.
Summary of the invention
The main purpose of the present invention is to provide a kind of air-conditioning system and the control methods of air-conditioning system, to solve existing skill
Air-conditioning system in art can not during defrosting to indoor carry out stable heating the problem of.
To achieve the goals above, it according to an aspect of the invention, there is provided a kind of air-conditioning system, including sets gradually
Indoor unit, compressor, outdoor unit and restricting element on the same circuit, the air-conditioning system further include: the first heating dress
It sets, the first heater can be opened and closed on the pipeline being arranged between the compressor and the outdoor unit；First refrigerant
Pipe, first refrigerant pipe are arranged in parallel with the restricting element；Secondary heating mechanism, the secondary heating mechanism can be opened and closed
It is arranged on first refrigerant pipe；Control assembly, the refrigerant that the control assembly is used to control in the air-conditioning system flow through
The restricting element or first refrigerant pipe.
Further, the control assembly includes the first triple valve, and first triple valve includes the first valve port A1, second
Valve port A2 and third valve port A3, the first valve port A1 are connected to the first end of the indoor unit, the second valve port A2 with
The first end of first refrigerant pipe is connected to, and the third valve port A3 is connected to the first end of the restricting element.
Further, the control assembly further includes the second triple valve, and second triple valve includes the first valve port B1, the
Two valve port B2 and third valve port B3, the first valve port B1 are connected to the first end of the outdoor unit, the second valve port B2
It is connected to the second end of first refrigerant pipe, the third valve port B3 is connected to the second end of the restricting element.
Further, the first heater and the secondary heating mechanism are electric heater unit.
Further, the first heater and the secondary heating mechanism include: electric heating assembly；Insulating layer,
The insulating layer is coated on the periphery of the electric heating assembly.
Further, the electric heating assembly include at least two pieces of thermally conductive sheets and setting adjacent two pieces of thermally conductive sheets it
Between electric heating wire.
Further, the insulating layer is heat-preservation cotton layer.
Further, the air-conditioning system further includes four-way valve, and the four-way valve includes the first valve port C1, the second valve port
C2, third valve port C3 and the 4th valve port C4, the first valve port C1 are connected to the second end of the indoor unit, second valve
Mouth C2 is connected to the first end of the compressor, and the third valve port C3 is connected to the second end of the compressor, and the described 4th
Valve port C4 is connected to the second end of the outdoor unit, wherein when air-conditioning system is in heating mode and heating and defrosting mode, institute
It states the first valve port C1 to be connected to the third valve port C3, and the second valve port C2 is connected to the 4th valve port C4；When described
When air-conditioning system is in refrigeration mode, the first valve port C1 is connected to the second valve port C2, and the third valve port C3 with
The 4th valve port C4 connection.
According to another aspect of the present invention, a kind of control method of air-conditioning system, the control of the air-conditioning system are provided
Method realizes control using above-mentioned air-conditioning system, and the control method of the air-conditioning system includes: when air-conditioning system operates in system
When hot defrosting mode, first heating according to the thickness control of the frost in the air-conditioning system of the controller of the air-conditioning system
The opening and closing of device and the secondary heating mechanism, and make the first valve port A1 and second of the first triple valve of the air-conditioning system
Valve port A2 conducting, and the first valve port B1 and the second valve port B2 conducting of the second triple valve of the air-conditioning system.
Further, when the thickness of the frost in the air-conditioning system is greater than first predetermined value, the controller controls institute
It states first heater and the secondary heating mechanism opens simultaneously；When the thickness of the frost in the air-conditioning system is less than or equal to the
When one predetermined value, the controller controls the first heater and closes and control the secondary heating mechanism opening.
It applies the technical scheme of the present invention, since the air-conditioning system in the present invention is provided with first heater to be opened/closed
And secondary heating mechanism, and by the control action of control assembly, the refrigerant in air-conditioning system can be made to flow through restricting element
Or first refrigerant pipe.When air-conditioning system work is under heating mode and refrigeration mode, the first heating dress can be simultaneously closed off
It sets and secondary heating mechanism, while controlling the refrigerant in air-conditioning system and flowing through restricting element.When air-conditioning system work is being made
, can be according to the situation for the frost tied in air-conditioning system when under hot defrosting mode, being selectively opened first heater can the
Two heating devices, and the first refrigerant pipe of refrigerant stream in air-conditioning system is controlled simultaneously, at this point, the refrigerant after heat release is without throttling
Element avoids refrigerant temperature and further decreases, and the secondary heating mechanism on the first refrigerant pipe is to the low temperature after indoor unit heat release
Refrigerant carries out heat temperature raising, carries out quickly defrosting convenient for flowing into outdoor unit, at the same time, when the frost in air-conditioning system is thicker
When, first heater and secondary heating mechanism will be powered, and can further can also add the refrigerant that outdoor unit flows out in this way
Heat heating preferably guarantees that the refrigerant for flowing into compressor at gaseous state, guarantees the suction superheat of compressor, it is therefore prevented that compressor band
The danger of liquid operation, while defrosting, indoor unit is persistently to indoor heating.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the annexation figure of air-conditioning system of the invention；
Fig. 2 diagrammatically illustrate air-conditioning system of the invention it is in refrigeration mode under refrigerant flow graph；
Fig. 3 diagrammatically illustrates the refrigerant flow graph that air-conditioning system of the invention is under heating mode；
Fig. 4 diagrammatically illustrates the flow graph that air-conditioning system of the invention is in refrigerant under heating and defrosting mode；
Fig. 5 diagrammatically illustrates main view when secondary heating mechanism of the invention is mounted on the first refrigerant pipe；
Fig. 6 diagrammatically illustrates A-A view in Fig. 5；
Fig. 7 diagrammatically illustrates the top view of Fig. 5；
Fig. 8 diagrammatically illustrates thermally conductive sheet and side view when electric heating wire fits together；And
Fig. 9 diagrammatically illustrates the B-B view in Fig. 8.
Wherein, the above drawings include the following reference numerals:
10, indoor unit；20, outdoor unit；30, compressor；40, restricting element；50, first heater；60, the second heating
Device；561, thermally conductive sheet；562, insulating layer；563, electric heating wire；70, the first refrigerant pipe；80, the first triple valve；90, the 2nd 3
Port valve；100, four-way valve.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Referring to shown in Fig. 1 to Fig. 9, according to an embodiment of the invention, a kind of air-conditioning system is provided, the sky in the present embodiment
Adjusting system includes the indoor unit 10 being successively set on the same circuit, compressor 30, outdoor unit 20 and restricting element 40.
Air-conditioning system in the present embodiment further includes first heater 50, the first refrigerant pipe 70, secondary heating mechanism 60
And control assembly.
Wherein, first heater 50 can be opened and closed on the pipeline being arranged between compressor 30 and outdoor unit 20；First
Refrigerant pipe 70 is arranged in parallel with restricting element 40；Secondary heating mechanism 60 can be opened and closed to be arranged on the first refrigerant pipe 70；Control
The refrigerant that component is used to control in air-conditioning system flows through restricting element 40 or the first refrigerant pipe 70.
It is shown in Figure 1, first heater 50 to be opened/closed and are provided with by air-conditioning system in this present embodiment
Two heating devices 60, and by the control action of control assembly, the refrigerant in air-conditioning system can be made to flow through restricting element 40
Or first refrigerant pipe 70.When air-conditioning system work is under heating mode and refrigeration mode, the first heating can be simultaneously closed off
Device 50 and secondary heating mechanism 60, while controlling the refrigerant in air-conditioning system and flowing through restricting element 40.Work as air-conditioning system
When work is under heating and defrosting mode, the first heating can be selectively opened according to the situation for the frost tied in air-conditioning system
Device 50 can secondary heating mechanism 60, and the first refrigerant pipe of refrigerant stream 70 in air-conditioning system is controlled simultaneously, at this point, after heat release
Refrigerant avoids refrigerant temperature and further decreases without restricting element 40, the secondary heating mechanism 60 on the first refrigerant pipe 70
Heat temperature raising is carried out to the low temperature refrigerant after 10 heat release of indoor unit, carries out quickly defrosting convenient for flowing into outdoor unit 20, at the same time,
When the frost in air-conditioning system is thicker, first heater 50 and secondary heating mechanism 60 will be powered, and can incite somebody to action in this way
The refrigerant that outdoor unit 20 flows out also can further heat temperature raising, preferably guarantee to flow into the refrigerant of compressor 30 into gaseous state, guarantee
The suction superheat of compressor 30, it is therefore prevented that the danger that compressor 30 is run with liquid, while defrosting, indoor unit 10 is persistently to room
Interior heat supply.
Control assembly in the present embodiment includes the first triple valve 80, and the first triple valve 80 includes the first valve port A1, second
Valve port A2 and third valve port A3, the first valve port A1 are connected to the first end of indoor unit 10, the second valve port A2 and the first refrigerant pipe
70 first end connection, third valve port A3 are connected to the first end of restricting element 40.
Control assembly further includes the second triple valve 90, the second triple valve 90 include the first valve port B1, the second valve port B2 and
Third valve port B3, the first valve port B1 are connected to the first end of outdoor unit 20, the second end of the second valve port B2 and the first refrigerant pipe 70
Connection, third valve port B3 are connected to the second end of restricting element 40.
Shown in referring to figs. 2 and 3, when air-conditioning system work is under heating mode and refrigeration mode, the first triple valve 80
The first valve port A1 be connected to third valve port A3, and the second triple valve 90 the first valve port B1 and third valve port B3 conducting.Referring to
Shown in Fig. 4, when air-conditioning system duty heating and defrosting mode, the first valve port A1 and the second valve port A2 of the first triple valve 80 connect
It is logical, and the first valve port B1 and the second valve port B2 conducting of the second triple valve 90, so that the refrigerant after heat release is without restricting element
40, it avoids refrigerant temperature and further decreases, after the secondary heating mechanism 60 on the first refrigerant pipe 70 is to 10 heat release of indoor unit
Low temperature refrigerant carries out heat temperature raising, carries out quickly defrosting convenient for flowing into outdoor unit 20, structure is simple, convenient for control.
Preferably, the first heater 50 in the present embodiment and secondary heating mechanism 60 are electric heater unit, are convenient for
It realizes and automatically controls.
Referring to shown in Fig. 5 to Fig. 9, first heater 50 and secondary heating mechanism 60 in the present embodiment include that electricity adds
Hot component and insulating layer 562, insulating layer 562 are coated on the periphery of electric heating assembly, fast convenient for carrying out to the refrigerant in refrigerant pipe
Speed heating, improves the defrosting efficiency of the air-conditioning system in the present embodiment.
Preferably, electric heating assembly includes at least two pieces of thermally conductive sheets 561 and is arranged between adjacent two pieces of thermally conductive sheets 561
Electric heating wire 563 is generated heat by electric heating wire 563, and quickly passes to refrigerant pipe by thermally conductive sheet 561.Insulating layer 562 is to protect
Warm cotton layer in other embodiments of the invention, can also set insulating layer 562 to foamed cotton layer, the knot such as cotton layer certainly
Structure, as long as other modes of texturing under design of the invention are within the scope of the present invention.
Air-conditioning system in the present embodiment further includes four-way valve 100, and four-way valve 100 includes the first valve port C1, the second valve port
C2, third valve port C3 and the 4th valve port C4, the first valve port C1 are connected to the second end of indoor unit 10, the second valve port C2 and compression
The first end of machine 30 is connected to, and third valve port C3 is connected to the second end of compressor 30, and the second of the 4th valve port C4 and outdoor unit 20
End connection, wherein when air-conditioning system is in heating mode and heating and defrosting mode, the first valve port C1 and third valve port C3 connect
It is logical, and the second valve port C2 is connected to the 4th valve port C4；When air-conditioning system is in refrigeration mode, the first valve port C1 and the second valve port
C2 connection, and third valve port C3 is connected to the 4th valve port C4.
Preferably, the first refrigerant pipe 70 in the present embodiment and each refrigerant in connection air-conditioning system are copper pipe,
Structure is simple, is convenient for the transmission of heat.
Restricting element 40 in the present embodiment is electric expansion valve, certainly, in other embodiments of the invention, can be with
The structures such as capillary are set by restricting element 40.
Heating is carried out during the cold season when needing to defrost, and air-conditioning system is in heating and defrosting mode, and high temperature refrigerant is from compression
After machine 30 enters the room 10 heat release of machine by four-way valve 100, by the first triple valve 80 and commutation (the first threeway of the second triple valve 90
The the first valve port A1 and the second valve port A2 of valve 80 are connected to, the second valve port B2 and the first valve port B1 connection of the second triple valve 90) it allows
Refrigerant directly flows to outdoor unit 20, refrigerant stream from indoor unit 10 by the first refrigerant pipe 70 in parallel without restricting element 40
To: 30-four-way valve of compressor, 100-indoor unit the 10-the first triple valve 80 and second triple valve 90-outdoor unit, 20-four-way
100-compressor of valve 30.Refrigerant after heat release avoids refrigerant temperature and further decreases without restricting element 40.In parallel
The secondary heating mechanism 60 of first refrigerant pipe 70 carries out heat temperature raising to the low temperature refrigerant after 10 heat release of indoor unit, convenient for flowing into room
Outer machine 20 carries out quickly defrosting.
According to another aspect of the present invention, the control method of air-conditioning system is provided, the control method of air-conditioning system is above-mentioned
Air-conditioning system realize control, the control method of air-conditioning system includes:
When air-conditioning system operates in heating and defrosting mode, the controller of air-conditioning system is according to the white thickness in air-conditioning system
The opening and closing of degree control first heater 50 and secondary heating mechanism 60, and make the first valve port A1 and the of the first triple valve 80
Two valve port A2 conducting, and the first valve port B1 and the second valve port B2 conducting of the second triple valve 90.
When the thickness of the frost in air-conditioning system is greater than first predetermined value, controller controls first heater 50 and second
Heating device 60 opens simultaneously；When the thickness of the frost in air-conditioning system is less than or equal to first predetermined value, controller control first
Heating device 50 closes and controls the opening of secondary heating mechanism 60.
Air-conditioning system of the invention is according to the frosting thickness of machine outside outer ring and outer tube temperature comprehensive descision, and specific defrosting step is such as
Under:
It (1) is not that very seriously the condition of (environment temperature is not very low), i.e. 20 frosting thickness of outdoor unit are less than for frosting
When equal to first predetermined value, the secondary heating mechanism 60 on the first refrigerant pipe 70 only in parallel is powered, and outdoor unit 20 arrives four-way valve
50 no power of first heater on refrigerant pipe pipe between 100, while defrosting, indoor unit 10 persistently to indoor heating,
Refrigerant flow direction: the 10-the first triple valve of 30-four-way valve of compressor, 100-indoor unit 80 and the second triple valve 90 (A1 is connected to A2,
B2 is connected to B1)-20-four-way valve of outdoor unit, 100-compressor 30, carrying out practically is as shown in figure 9, operation a period of time, detection
Terminate to the defrosting of outer machine, and stable operation 1 minute or more, the first triple valve 80 and the second triple valve 90 are switched to normal heating
State (A1 is connected to A3, and B3 is connected to B1), air-conditioning do not have to defrosting, and stable heating, operation is as shown in Figure 4 at this time.
(2) condition of (environment temperature is very low, and outer machine freezes) very serious for frosting, i.e. the frosting thickness of outdoor unit 20 are big
When first predetermined value, on the secondary heating mechanism 60 and outdoor unit 20 to 100 refrigerant pipe of four-way valve on the first refrigerant pipe 70
First heater 50 will be powered, the refrigerant that can be flowed out outdoor unit 20 so also can further heat temperature raising, preferably protect
Card flows into the refrigerant of compressor 30 into gaseous state, guarantees the suction superheat of compressor 30, it is therefore prevented that compressor 30 is run with liquid
Danger, while defrosting, indoor unit 10 is persistently to indoor heating, refrigerant flow direction: compressor 30-four-way valve, 100-indoor unit
10-the first triple valve 80 is compressed with second triple valve 90 (A1 is connected to A2, and B2 is connected to B1)-20-four-way valve of outdoor unit 100-
Machine 30, operation a period of time, when detecting outside outer machine that machine defrosting terminates, and stable operation 1 minute or more, then the first heating dress
Set 50 and secondary heating mechanism 60 all power off, the first triple valve 80 and the second triple valve 90 be switched to normal heating state (A1 and
A3 connection, B3 are connected to B1), air-conditioning does not have to defrosting, and stable heating, operation is as shown in Figure 4 at this time.
(3) for detecting that outdoor unit 20 does not have to defrosting when, air-conditioning does not have to defrosting and is only heated, air-conditioning system of the invention
It unites the flow direction of refrigerant of (not defrosting) in heating: the 10-the first triple valve of 30-four-way valve of compressor, 100-indoor unit 80
90 20-four-way valve of (B3 is connected to B1)-outdoor unit, the 100-compression of the 40-the second triple valve of (A1 is connected to A3)-restricting element
Machine 30, carrying out practically is as shown in Figure 3；
Flow direction (first heater 50 and the secondary heating mechanism 60 of the air-conditioning system of the invention refrigerant in refrigeration
No power): 80 (B1 is connected to B3)-restricting element 40 of the 20-the first triple valve of 30-four-way valve of compressor, 100-outdoor unit-
Second triple valve, 90 10-four-way valve of (A3 is connected to A1)-indoor unit, 100-compressor 30, specific flow direction are as shown in Figure 3.
Air-conditioning system of the invention is in defrosting, indoor unit 10 and the continually and steadily booting operation of outdoor unit 20, high temperature refrigerant
Enter interior machine heat release from compressor 30 by four-way valve 100, the comfort of heating is directly brought to user, the refrigerant after cooling is logical
It crosses first heater 50 and the selectivity of secondary heating mechanism 60 heat up, flows into outdoor unit 20 and defrost, it is high
After the defrosting of outdoor unit 20, the refrigerant after defrosting cooling is selected the refrigerant of temperature by first heater 50 and secondary heating mechanism 60
Selecting property heats up refrigerant, ensure that the suction superheat of compressor 30, reduces compressor air suction band liquid during defrost
The problem of, 30 reliability of compressor is improved, circulating in for electric heated defrosting air-conditioning system refrigerant of the present invention is fine while defrosting
Ensure that the indoor offers of 10 pairs of indoor unit continue heat supply, ensure that the thermal comfort of user.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Electric heated defrosting system of the invention be on the basis of existing air-conditioning in parallel first refrigerant pipe, increase
First triple valve and the second triple valve, first heater and secondary heating mechanism, the first refrigerant pipe and outdoor unit newly increased
Connecting copper pipe to four-way valve is wrapped in first heater.First heater and secondary heating mechanism of the invention is by two
Thermally conductive sheet forms electric heating wire tight, and electric heating wire rule is distributed on thermally conductive sheet, and thermally conductive sheet is in order to better
By the heat transfer of electric heating wire to copper pipe.In order to preferably avoid heat loss, the heat for allowing refrigerant to absorb is more, convenient for fast
Speed defrosting.
Since present invention employs one kind to be effectively reduced optional equipment with the Defrost mode of stable heating, reduce
Cost reduces the complexity of outer machine pipeline；When effective progress quickly defrosting, interior machine continuous service heat supply substantially reduces because changing
Room temperature caused by frost reduces, and improves heating comfort effect；And compressor is inhaled during can effectively reducing defrost
The problem of gas carrying liquid, improves compressor reliability；And targetedly heat supply effectively can be carried out to frosting thickness and defrosted.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of air-conditioning system, including the indoor unit (10), compressor (30), outdoor unit (20) being successively set on the same circuit
And restricting element (40), which is characterized in that the air-conditioning system further include:
First heater (50), the first heater (50) can be opened and closed to be arranged in the compressor (30) and the room
On pipeline between outer machine (20)；
First refrigerant pipe (70), first refrigerant pipe (70) are arranged in parallel with the restricting element (40)；
Secondary heating mechanism (60), the secondary heating mechanism (60) can be opened and closed to be arranged on first refrigerant pipe (70)；
Control assembly, the refrigerant that the control assembly is used to control in the air-conditioning system flow through the restricting element (40) or
First refrigerant pipe (70).
2. air-conditioning system according to claim 1, which is characterized in that the control assembly includes the first triple valve (80),
First triple valve (80) includes the first valve port A1, the second valve port A2 and third valve port A3, the first valve port A1 and institute
The first end connection of indoor unit (10) is stated, the second valve port A2 is connected to the first end of first refrigerant pipe (70), described
Third valve port A3 is connected to the first end of the restricting element (40).
3. air-conditioning system according to claim 1, which is characterized in that the control assembly further includes the second triple valve
(90), second triple valve (90) includes the first valve port B1, the second valve port B2 and third valve port B3, the first valve port B1
It being connected to the first end of the outdoor unit (20), the second valve port B2 is connected to the second end of first refrigerant pipe (70),
The third valve port B3 is connected to the second end of the restricting element (40).
4. air-conditioning system according to claim 1, which is characterized in that the first heater (50) and described second adds
Thermal (60) is electric heater unit.
5. air-conditioning system according to claim 1, which is characterized in that the first heater (50) and described second adds
Thermal (60) includes:
Electric heating assembly；
Insulating layer (562), the insulating layer (562) are coated on the periphery of the electric heating assembly.
6. air-conditioning system according to claim 5, which is characterized in that the electric heating assembly includes at least two pieces of thermally conductive sheets
(561) and electric heating wire (563) between the adjacent two pieces thermally conductive sheets (561) is set.
7. air-conditioning system according to claim 5, which is characterized in that the insulating layer (562) is heat-preservation cotton layer.
8. air-conditioning system according to any one of claim 1 to 7, which is characterized in that the air-conditioning system further includes four
Port valve (100), the four-way valve (100) include the first valve port C1, the second valve port C2, third valve port C3 and the 4th valve port C4,
The first valve port C1 is connected to the second end of the indoor unit (10), and the of the second valve port C2 and the compressor (30)
One end connection, the third valve port C3 are connected to the second end of the compressor (30), the 4th valve port C4 and the outdoor
The second end of machine (20) is connected to, wherein when air-conditioning system is in heating mode and heating and defrosting mode, the first valve port C1
It is connected to the third valve port C3, and the second valve port C2 is connected to the 4th valve port C4；When the air-conditioning system is in
When refrigeration mode, the first valve port C1 is connected to the second valve port C2, and the third valve port C3 and the 4th valve port
C4 connection.
9. a kind of control method of air-conditioning system, which is characterized in that the control method of the air-conditioning system using claim 1 to
Air-conditioning system described in any one of 8 realizes control, and the control method of the air-conditioning system includes:
When air-conditioning system operates in heating and defrosting mode, the controller of the air-conditioning system is according to the frost in the air-conditioning system
Thickness control described in first heater (50) and the secondary heating mechanism (60) opening and closing, and make the air-conditioning system
The first triple valve (80) the first valve port A1 and the second valve port A2 conducting, and the second triple valve (90) of the air-conditioning system
First valve port B1 and the second valve port B2 conducting.
10. the control method of air-conditioning system according to claim 9, which is characterized in that the frost in the air-conditioning system
Thickness when being greater than first predetermined value, the controller controls the first heater (50) and the secondary heating mechanism
(60) it opens simultaneously；
When the thickness of the frost in the air-conditioning system is less than or equal to first predetermined value, controller control first heating
Device (50) closes and controls the secondary heating mechanism (60) opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810427318.6A CN108954602A (en) | 2018-05-07 | 2018-05-07 | Air conditioning system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810427318.6A CN108954602A (en) | 2018-05-07 | 2018-05-07 | Air conditioning system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN108954602A true CN108954602A (en) | 2018-12-07 |
Family
ID=64498993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810427318.6A Withdrawn CN108954602A (en) | 2018-05-07 | 2018-05-07 | Air conditioning system and control method thereof |
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| Country | Link |
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| CN (1) | CN108954602A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470004A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110736205A (en) * | 2019-09-25 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111412709A (en) * | 2020-03-02 | 2020-07-14 | 珠海格力电器股份有限公司 | Air conditioner |
| CN112113380A (en) * | 2020-10-16 | 2020-12-22 | 珠海格力电器股份有限公司 | Refrigeration system and control method thereof |
| WO2022121350A1 (en) * | 2020-12-11 | 2022-06-16 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
| CN114811758A (en) * | 2022-04-14 | 2022-07-29 | 青岛海尔空调器有限总公司 | Air conditioner refrigerant pipe with heating function and air conditioner comprising same |
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| JPS62147252A (en) * | 1985-12-19 | 1987-07-01 | Toshiba Corp | Defrosting operation of refrigerating cycle |
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| CN102434915A (en) * | 2011-09-20 | 2012-05-02 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN208238034U (en) * | 2018-05-07 | 2018-12-14 | 珠海格力电器股份有限公司 | air conditioning system |
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| JPS62147252A (en) * | 1985-12-19 | 1987-07-01 | Toshiba Corp | Defrosting operation of refrigerating cycle |
| CN2605538Y (en) * | 2003-01-23 | 2004-03-03 | 清华同方人工环境有限公司 | Bypass defrosting apparatus for heat pump set |
| CN102434915A (en) * | 2011-09-20 | 2012-05-02 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN208238034U (en) * | 2018-05-07 | 2018-12-14 | 珠海格力电器股份有限公司 | air conditioning system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470004A (en) * | 2019-08-02 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110736205A (en) * | 2019-09-25 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111412709A (en) * | 2020-03-02 | 2020-07-14 | 珠海格力电器股份有限公司 | Air conditioner |
| CN112113380A (en) * | 2020-10-16 | 2020-12-22 | 珠海格力电器股份有限公司 | Refrigeration system and control method thereof |
| WO2022121350A1 (en) * | 2020-12-11 | 2022-06-16 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
| CN114811758A (en) * | 2022-04-14 | 2022-07-29 | 青岛海尔空调器有限总公司 | Air conditioner refrigerant pipe with heating function and air conditioner comprising same |
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