JP2008073407A - Dehumidifying/heating device and clothes dryer using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifying/heating device which prevents scattered dew condensation water from adhering to a condenser without using a partition plate obstructing a ventilating circuit, the air flow volume from declining, and a dehumidification and heating performance from deteriorating. <P>SOLUTION: The dehumidifying/heating device is equipped with a compressor 1, a condenser 20, an expansion mechanism 3, a heat pump system 23 having a vaporizer 21, and a ventilating circuit 23 in which air passes to an air flow inlet opening 6, vaporizer 21, condenser 20, and air flow exit 7 in that order. The gravity direction end 21a of the vaporizer 21 is arranged in the lower side in the gravity direction than the gravity direction end 20a of the condenser 20. By this arrangement, even if the dew condensation water deposited on the vaporizer 21 is scattered in the bottom end, a deposit of the dew condensation water on the condenser 20 can be prevented, and a decline of performance in dehumidification and heating is prevented, without using a partition plate obstructing the ventilating circuit. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dehumidifying / heating device for dehumidifying and heating air, and more particularly to a dehumidifying / heating device suitable for a clothes dryer for drying clothes. Moreover, it is related with the clothes dryer using such a dehumidification warming apparatus.

  A conventional dehumidifying / heating apparatus will be described with reference to FIGS. FIG. 5 is a side view of a conventional dehumidifying and warming device, and FIG. 6 is a cross-sectional view taken along line AA of FIG.

  In the dehumidifying and warming device, air flows in the order of the heat pump device 5 including the compressor 1, the condenser 2, the expansion mechanism 3, and the evaporator 4, the air inlet 6, the evaporator 4, the condenser 2, and the air outlet 7. It is comprised from the wind circuit 8 (for example, refer patent document 1).

  The evaporator 4 is located on the windward side and arranged in a substantially vertical direction, and the condenser 2 is located on the leeward side and is mounted substantially parallel to the evaporator 4. A partition plate 9 is provided between the evaporator 4 and the condenser 2 in substantially parallel to the evaporator 4.

  The operation of the dehumidifying and warming apparatus configured as described above will be described below.

  First, as the operation of the heat pump, when the compressor 1 is driven, the gas refrigerant is compressed to become a high-temperature and high-pressure gas refrigerant and flows into the condenser 2. The gas refrigerant flowing into the condenser 2 exchanges heat with air, the air is heated, the refrigerant is cooled and condensed, and changes into a high-pressure liquid refrigerant.

  Next, the high-pressure liquid refrigerant is decompressed by the expansion mechanism 3 to become a low-temperature low-pressure liquid refrigerant or a gas-liquid two-phase refrigerant. This refrigerant flows into the evaporator 4 and exchanges heat with air to cool the air. The refrigerant is heated to become a low-pressure gas refrigerant and sucked into the compressor 1.

  On the other hand, the high-humidity air flowing in from the air inlet 6 first flows into the evaporator 4 and is cooled. At this time, when the air is cooled below the outdoor temperature, condensation is formed on the surface of the evaporator 4 and the air is dehumidified. Next, it flows into the condenser 2, is heated, becomes high-temperature and low-humidity air, and exits from the air outlet 7 to the outside of the dehumidifying and warming device. Since the heating amount at this time is the sum of the heat exchange amount in the evaporator 4 and the input of the compressor 1, the temperature of the air exiting from the air outlet 7 is higher than the temperature of the air flowing in from the air inlet. Become.

  At this time, the condensed water condensed in the evaporator 4 is collected by gravity at the end of the evaporator 4 in the gravity direction and drained, but a part thereof is scattered by the airflow flowing in the wind circuit 8. When the scattered condensed water adheres to the condenser 2, it is heated by the condenser 2 and re-evaporates. In order to prevent this, a partition plate 9 is conventionally installed.

  In recent years, such a dehumidifying and warming device has been used in clothes dryers (see, for example, Patent Document 2).

  Next, the case where the dehumidification warming apparatus which consists of the said structure is used for a clothes dryer is demonstrated.

  FIG. 7 is a side sectional view of a conventional clothes dryer.

  Inside the outer tub 30 installed inside the housing 10, a cylindrical, horizontal axis type rotating tub 50 that accommodates the clothing 40 is rotatably provided and is driven to rotate by a drive motor 60. On the front surface of the housing 10, an opening 10 a for inserting and removing the clothing 40 and a door 70 for opening and closing the same are provided.

  The front side of the outer tub 30 and the rotating tub 50 also have similar openings 30a and 50a, respectively. The opening 30a of the outer tub 30 is water-tightly connected to the opening 10a of the housing 10 by a bellows 80. Yes.

  The blower 120 constituting the blowing means is provided on the outer peripheral surface of the outer tub 30 so as to be positioned in a corner space (upper portion of the casing 10) formed by the upper surface 10d of the casing 10 and the outer tub 30. . The heat pump device 5 described above is provided at the bottom of the back surface 10b of the housing 10.

  Next, the operation of the clothes dryer will be described.

  The heat pump device 5 is operated, and the blower 120 is operated in parallel with the heat pump device 5. As a result, the warm air heated by the heat radiation of the condenser 2 is blown into the rotary tank 50 from the air supply port 140 through the duct 121 a constituting the wind circuit 8. The rotary tank 50 is rotationally driven by the drive motor 60, and the clothes 40 are stirred up and down.

  The warm air supplied into the rotating tub 50 deprives moisture when passing through the gap between the clothes 40, and in a moist state passes through the blower 120 from the circulation duct 160 through the exhaust port 150 of the outer tub 30, and evaporates from the duct 121b. To vessel 4. When the wet warm air passes through the evaporator 4, sensible heat and latent heat are deprived and dehumidified, and separated into dry air and condensed water.

  When the dried air subsequently passes through the condenser 2, it is heated again by the condenser 2 to become hot air, and is supplied again into the outer tank 30 and the rotary tank 50 in the same manner as described above. repeat. The condensed water flows into a drain pan 170 provided at the lower part of the evaporator 4 and is discharged out of the apparatus through a drain port (not shown).

At this time, the partition plate 9 prevents the condensed water scattered from the evaporator 4 from adhering to the condenser 2, thereby reducing the drying time.
JP-A-61-2896 JP-A-2005-304985

  However, in the above-mentioned conventional configuration, the partition plate 9 provided for preventing the dew condensation water scattering becomes a resistance, and as a result, there is a problem that the air volume is reduced and the dehumidifying performance and the heating performance are reduced. Moreover, it has the subject that the drying time of a clothes dryer becomes long resulting from it.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a dehumidifying and warming device that reduces the resistance of an air passage and prevents the dehumidifying performance and the warming performance from being lowered.

  Another object of the present invention is to provide a clothes dryer with a short drying time.

  In order to solve the above-described conventional problems, a dehumidifying and warming device of the present invention includes a compressor, a condenser, a heat pump device having an expansion mechanism and an evaporator, an air inlet, the evaporator, the condenser, and an air outlet. The evaporator is arranged so that the gravity direction end of the evaporator is located below the gravity direction end of the condenser in the gravity direction.

  As a result, even if the condensed water that has condensed on the evaporator is scattered, the gravity direction end of the evaporator is located below the end of the condenser in the direction of gravity, so a partition plate is provided in the wind circuit as a resistance. Therefore, it is possible to provide a dehumidifying / warming device that can prevent the condensed water scattered from the lower end of the evaporator, in particular, from adhering to the condenser, and suppresses a decrease in dehumidifying performance and warming performance.

  In the dehumidifying / heating apparatus of the present invention, the surface of the condenser is subjected to water repellency treatment.

  As a result, even when the condensed water scattered as described above adheres to the condenser, the attached condensed water becomes droplets, so the contact area between the condensed water and the condenser surface can be reduced, and re-evaporation can be reduced. In addition to being suppressed, it is easy to be discharged from the end of the condenser in the direction of gravity, and further prevents the condensed water from adhering to the condenser from adhering and fixing without providing a partition plate that resists the wind circuit. Therefore, it is possible to provide a dehumidifying / warming device that suppresses a decrease in dehumidifying performance and warming performance.

  In the dehumidifying / heating apparatus of the present invention, the material used for the water-repellent treatment is a fluorine-based or silicon-based resin.

  This makes it possible to greatly increase the contact angle of the condensed water, effectively suppressing the re-evaporation of the condensed water and improving the discharge performance from the condenser. Without providing a plate, it is possible to further prevent the condensed water scattered on the condenser from adhering and fixing.

  In the dehumidifying / heating apparatus of the present invention, the material used for the water-repellent treatment is an acrylic or epoxy resin.

  Thereby, since acrylic resin and epoxy resin have a corrosion resistance effect, in addition to the above-described effects, a durable dehumidifying heating apparatus can be provided.

  In the dehumidifying / heating apparatus of the present invention, the evaporator surface is subjected to a hydrophilic treatment.

  As a result, the condensed water condensed on the evaporator can flow smoothly as a liquid film to the end in the direction of gravity, and the condensed water scattered on the condenser remains attached without providing a resistance partition plate in the wind circuit. This can be further prevented.

  Moreover, this invention mounts the dehumidification warming apparatus as described above in a clothes dryer.

  Thereby, the clothes dryer which can aim at shortening of drying time can be provided, without reducing dehumidification performance and heating performance.

  The present invention prevents the condensed water splashed from the evaporator without using the partition plate that becomes the resistance of the wind circuit from remaining attached to the condenser, and prevents the air volume from being reduced by the partition plate, It is possible to provide a dehumidifying and warming device that prevents the dehumidifying performance and warming performance from being deteriorated, and to provide a clothes dryer having good drying efficiency by mounting such a dehumidifying and warming device on the clothes dryer. It can be done.

  The invention according to claim 1 includes a heat pump device having a compressor, a condenser, an expansion mechanism, and an evaporator, and an air inlet, the evaporator, the condenser, and a wind circuit that flows in the order of the air outlet, The gravity direction end of the evaporator is disposed below the gravity direction end of the condenser in the gravity direction.

  By adopting such a configuration, even if wind pressure acts on the condensed water that has condensed on the evaporator, the gravity direction end of the evaporator is located below the gravity direction end of the condenser. Provided is a dehumidifying / heating device that prevents dew condensation splashing from the lower part of the evaporator from adhering to the condenser and prevents the dehumidifying performance and the heating performance from deteriorating without providing a separate member such as a partition plate. be able to.

  The invention according to claim 2 is that the surface of the condenser is subjected to a water repellency treatment. Even when the condensed water that has splashed adheres to the condenser, the attached condensed water quickly becomes droplets. The contact area between the water and the condenser surface is reduced to suppress re-evaporation, and it flows down along the condenser surface due to gravity and is easily discharged from the end in the direction of gravity. Therefore, it is possible to further prevent the deterioration of the dehumidifying performance and the warming performance.

  The invention according to claim 3 is a water-repellent treatment performed with a fluorine-based or silicon-based resin, can greatly increase the contact angle of dew condensation water, and smoothly flows down from the condenser, It is possible to improve the drainage of the attached condensed water. As a result, re-evaporation of condensed water can be suppressed.

  The invention according to claim 4 is a water repellent treatment performed with an acrylic or epoxy resin, and can provide the condenser with a corrosion resistance effect of an acrylic resin or an epoxy resin. A durable dehumidifying heating device can be provided.

  The invention according to claim 5 is that the surface of the evaporator is subjected to a hydrophilic treatment, and the condensed water condensed on the evaporator is quickly used as a liquid film to prevent scattering due to wind pressure, and to the end in the direction of gravity. Can be made smooth. As a result, scattering to the condenser is suppressed, and it is also possible to suppress the dew condensation water from inhibiting the heat exchange action between the evaporator and air, thereby preventing further dehumidification performance and heating performance from being lowered. be able to.

  The invention according to claim 6 is a device in which the dehumidifying and warming device according to any one of claims 1 to 5 is mounted on a clothes dryer, and the dehumidifying performance and the warming performance are not deteriorated. A clothes dryer capable of shortening the drying time can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, the same components as those in the conventional example are denoted by the same reference numerals, and detailed description thereof is omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a side view of a dehumidifying and warming device according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along line BB in FIG. 3 is a cross-sectional view taken along the line CC of FIG.

  In the figure, the dehumidifying and warming device sequentially passes through the compressor 21, the condenser 20, the heat pump device 22 including the expansion mechanism 3 and the evaporator 21, and the evaporator 21 and the condenser 20 from the air inlet 6. A wind circuit 23 through which air flows so as to be discharged from the air outlet 7 is provided.

  As is clear from the figure, the wind circuit 23 also forms a part of the outer shell case of the heat pump device 22.

  The evaporator 21 is configured by a fin tube type heat exchanger as is well known, and is located on the windward side in the wind circuit 23 and is arranged in a substantially vertical direction. Similarly, the condenser 20 is composed of a fin tube type heat exchanger, is located on the leeward side in the air passage 23, and is mounted approximately 10 to 20 mm apart from the evaporator 21 in parallel. . Specifically, the evaporator 21 and the condenser 20 are integrated by end plates 24 provided on both sides, and the interval is maintained by the end plates 24.

  Further, the outer shell bottom surface 22a of the heat pump device 22 has different thicknesses on the evaporator 21 side and the condenser 20 side. As a result of the thickness setting, the evaporator 21 has its gravity direction end (lower end) 21a. Is installed so as to be located below the gravity direction end (lower end) 20a of the condenser 20 in the gravity direction.

  Further, the surface of the fins and the pipes constituting the condenser 20 is subjected to a water-repellent surface treatment, and the surface of the fins and the pipes constituting the evaporator 21 are subjected to a hydrophilic surface treatment. As the water-repellent surface treatment material, a fluorine-based or silicon-based resin is used. However, if it is desired to improve corrosion resistance, an acrylic-based or epoxy-based resin is used.

  These water-repellent surface treatment and hydrophilic surface treatment form a thin resin coating film on the surface of the heat exchanger as is well known, and the coating film is formed by a well-known method.

  The operation of the dehumidifying and warming apparatus configured as described above will be described below.

  First, as the operation of the heat pump, when the compressor 1 is driven, the gas refrigerant is compressed to become a high-temperature and high-pressure gas refrigerant and flows into the condenser 20. The gas refrigerant flowing into the condenser 20 exchanges heat with air. As a result, the air is heated, the refrigerant is cooled and condensed, and changes into a high-pressure liquid refrigerant.

  Next, the high-pressure liquid refrigerant is decompressed by the expansion mechanism 3 to become a low-temperature low-pressure liquid refrigerant or a gas-liquid two-phase refrigerant. This refrigerant flows into the evaporator 21, exchanges heat with air, cools the air, heats the refrigerant to become a low-pressure gas refrigerant, and circulates again to the compressor 1.

  On the other hand, in the wind circuit 23, the high-humidity air flowing in from the air inlet 6 first passes through the evaporator 21 and is cooled. At this time, the air is cooled below the outdoor temperature, and condensation is formed on the surface of the evaporator 21 (fins), thereby dehumidifying the air.

  Next, the dehumidified air passes through the condenser 20, is heated at this time, becomes high-temperature and low-humidity air, and exits from the air outlet 7 to the outside of the dehumidifying and heating device. Since the heating amount at this time is the sum of the heat exchange amount in the evaporator 21 and the input of the compressor 1, the temperature of the air exiting from the air outlet 7 is higher than the temperature of the air flowing in from the air inlet. Is in a state.

  Here, since the evaporator 21 has been subjected to a hydrophilic treatment on the surface thereof, the condensed water quickly becomes a liquid film, and is smoothly collected and drained at the gravity direction end 400a of the evaporator 21.

  Further, some of the dew condensation water is scattered by the wind pressure of the airflow, but since it is in a liquid film state as described above, the amount of the scattering is small, and particularly in the lower part of the evaporator 21, the gravity direction end 21a is a condenser. Since it is located below the gravity direction end 20 a in the gravity direction, the condensed water splashed from the gravity direction end 21 a of the evaporator 21 does not adhere to the condenser 20. Moreover, even if it adheres, the amount is small and there is almost no influence on the dehumidifying and drying action.

  Furthermore, even when the above-mentioned condensed water is scattered while flowing to the gravity direction end 21a of the evaporator 21 and adheres to the condenser 20, the surface of the condenser 20 is subjected to water repellency treatment. The water quickly becomes droplets and flows down to the gravity direction end 20a by its own weight. As a result, the condensed water is prevented from adhering to the condenser 20 (fins) for a long time, and in addition, the droplet state described above is in a state where the contact area between the condensed water and the condenser 20 is small. Water becomes difficult to be heated, and the reevaporation action is reduced.

  As described above, it is possible to suppress the re-evaporation of the condensed water due to the adhesion of the condensed water to the condenser 20 without a member such as a partition plate, and to prevent the dehumidifying performance and the heating performance from being lowered due to this. It is possible to provide a dehumidifying and warming device in which the resistance of the wind circuit is reduced and the air volume is increased to reduce the loss of dehumidifying performance and warming performance.

(Embodiment 2)
FIG. 4 is a side sectional view of a clothes dryer equipped with the dehumidifying and warming device in the first embodiment.

  Inside the outer tub 30 installed inside the housing 10, a cylindrical, horizontal axis type rotating tub 50 (clothing accommodating portion) that accommodates the clothing 40 is rotatably provided. Driven by rotation. On the front surface of the housing 10, an opening 10 a for inserting and removing the clothing 40 and a door 70 for opening and closing the same are provided.

  Similar openings 30a and 50a are also provided on the front side of the outer tub 30 and the rotating tub 50, respectively, and the opening 30a of the outer tub 30 is water-tightly connected to the opening 10a of the housing 10 by a bellows 80. ing.

  The blower 120 constituting the blowing means is provided on the outer peripheral surface of the outer tub 30 so as to be positioned in a corner space (upper portion of the casing 10) formed by the upper surface 10d of the casing 10 and the outer tub 30. . The heat pump device 22 described above is provided at the lower part of the back surface 10b of the housing 10.

  Next, the operation of the clothes dryer will be described.

  In the drying operation, the heat pump device 22 is operated, and the blower 120 and the drive motor 60 are operated in parallel with the heat pump device 22.

  In this state, the warm air heated by the heat radiation of the condenser 20 passes through the duct 121a from the wind circuit 23 and is blown into the rotary tank 50 from the air supply port 140.

  The rotary tank 50 is rotationally driven by the drive motor 60, and the clothes 40 are stirred up and down.

  The warm air supplied into the rotating tub 50 deprives moisture when passing through the gap between the clothes 40, and in a moist state, passes through the exhaust duct 150 of the outer tub 30 and the blower 120 from the circulation duct 160, and the wind from the duct 121b. The evaporator 21 arranged in the circuit 23 is reached. When the wet warm air passes through the evaporator 21, sensible heat and latent heat are taken away and dehumidified, and separated into dry air and condensed water.

  When the dry air subsequently passes through the condenser 20, it is heated again by the condenser 20 to become hot air, and is supplied again into the outer tank 30 and the rotary tank 50 in the same manner as described above. repeat.

  The separated condensed water flows into a drain pan 170 provided at the lower part of the evaporator 21 and is discharged out of the apparatus through a drain port (not shown).

  In this operation, the condensed water adhering to the evaporator 21 smoothly flows down to the drain pan 170 as described in the first embodiment, and also to the condensed water condenser 20 at the gravity direction end 21a of the evaporator 21. Is prevented by the positional relationship with the end 20a of the condenser 20 in the gravitational direction, so that the drying action is also inhibited from being re-evaporated due to adhesion to the condenser 20.

  Further, the dew condensation water adhering to the condenser 20 for some reason becomes droplets due to the water-repellent treatment applied to the surface thereof and flows down by its own weight, so that it is prevented from adhering to the condenser 20 surface for a long time. The re-evaporation by the condenser 20 is suppressed.

  Therefore, a drying action with little loss can be obtained, and shortening of the drying time can be expected.

  As described above, the dehumidifying and warming device according to the present invention can suppress the scattering of condensed water without a member such as a partition plate that becomes a resistance of the wind circuit, and can prevent the dehumidifying performance and the warming performance from being lowered. Therefore, it can be applied to a dehumidifier and further to a drying room or the like.

Side view of dehumidifying and warming device in Embodiment 1 of the present invention Sectional view taken along line BB in FIG. Sectional view by CC line of FIG. Side sectional view of a clothes dryer equipped with the dehumidifying and warming device in the second embodiment Side view of a conventional dehumidifying and heating device Sectional view by the AA line of FIG. Side view of a conventional clothes dryer

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compressor 3 Expansion mechanism 6 Air inlet 7 Air outlet 20 Condenser 20a Gravitational end 21 of condenser 21 Evaporator 21a Gravitational end of evaporator 22 Heat pump apparatus 23 Wind circuit 50 Rotating tank (clothing accommodation part)

Claims (6)

  A heat pump device having a compressor, a condenser, an expansion mechanism, and an evaporator; and an air inlet, the evaporator, the condenser, and a wind circuit that flows in the order of the air outlet, the gravity direction end of the evaporator being the condensation A dehumidifying and warming device, wherein the dehumidifying and warming device is arranged to be lower in the direction of gravity than the end of the vessel in the direction of gravity.   The dehumidifying and warming device according to claim 1, wherein the condenser surface is subjected to a water repellent treatment.   The dehumidifying and warming device according to claim 2, wherein the water repellent treatment is performed with a fluorine-based or silicon-based resin.   The dehumidifying and warming device according to claim 2, wherein the water repellent treatment is performed with an acrylic or epoxy resin.   The dehumidification warming apparatus as described in any one of Claim 1 to 4 which performed the hydrophilic process to the said evaporator surface.   A clothes dryer in which the dehumidifying and warming device according to any one of claims 1 to 5 is disposed in a wind circuit that communicates with a clothes housing portion.

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