JPH08189708A - Warm-air room heater - Google Patents

Abstract

PURPOSE: To improve fuel consumption without spoiling comfortableness. CONSTITUTION: In a gas warm-air room heater A, provided with a save operating unit 55, reducing a control temperature from a set temperature by a predetermined temperature at every predetermined time of predetermined number of stages (three stages, for example) until the number of predetermined stages is achieved when a predetermined period of time (30mn, for example) has elapsed after a detected room temperature has arrived at a set temperature, and a control unit 5, controlling a gas burner so that a detected room temperature is maintained at the control temperature, a fluctuating operation unit 56, variating the amount of heating irregularly during the save operation in a final stage, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air heater having a save operation function.

[0002]

2. Description of the Related Art After a heating operation is started and a room temperature reaches a set temperature, a control temperature is set at a predetermined temperature (for example, every 1.0 ° C.) at a predetermined number of times (for example, every 30 minutes). There is known a hot-air heater with a save operation function that lowers the temperature twice. This warm air heater can be operated more economically than the warm air heater without the save operation function.

[0003]

In the above conventional hot air heater, if the control temperature during the save operation is further lowered {the predetermined temperature is increased, the predetermined number of times is increased}, the fuel efficiency is further reduced. You can

However, if the control temperature during the save operation is lowered below the above conditions, the user will feel cold even if the wall surface in the room is warm, and the comfort will be impaired.

The object of the present invention is to provide comfort without sacrificing
The purpose is to provide a warm air heater that can improve fuel efficiency.

[0006]

In order to solve the above-mentioned problems,
The present invention employs the following configuration. (1) A heater housing that has a heating source and a blower and blows warm air into the room from an outlet, a room temperature setting device that sets the room temperature, a room temperature sensor that detects the room temperature, and the detected room temperature maintains a controlled temperature. In a warm air heater having a heating controller having a save operation function of controlling the heating amount of the heating source and decreasing the control temperature with the passage of time, the heating amount is reduced during the save operation. A fluctuation driving means for changing is provided.

(2) A heater housing that has a heating source and a blower and blows warm air into the room from an outlet, a room temperature setting device that sets the room temperature, a room temperature sensor that detects the room temperature, and the detected room temperature controls the temperature. While controlling the heating amount of the heating source so as to maintain, when the detected room temperature reaches the set temperature and a predetermined time elapses, the control temperature is decreased by a predetermined temperature at predetermined time intervals until a predetermined number of steps is reached. A warm air heater having a heating controller having a save operation function is provided with a fluctuation operation means for varying the heating amount during the final stage of the save operation.

[0008]

[Action]

[Claim 1] The set temperature is set by the room temperature setting device. The room temperature sensor detects the room temperature. The heating source heats the air, and the blower blows warm air into the room from the outlet of the heater housing.

In a normal heating operation, the heating controller controls the heating amount of the heating source so that the detected room temperature maintains the control temperature (= set temperature). When the save operation function is enabled, the heating controller lowers the control temperature with the lapse of time, and the heating controller controls the heating amount of the heating source so that the detected room temperature maintains the lowered control temperature. Implement a controlled save operation.

The fluctuation operation means changes the heating amount of the heating source during the save operation.

[Claim 2] The set temperature is set by the room temperature setting device. The room temperature sensor detects the room temperature. The heating source heats the air, and the blower blows warm air into the room from the outlet of the heater housing.

In the normal heating operation, the heating controller controls the heating amount of the heating source so that the detected room temperature maintains the control temperature (= set temperature). When the save operation function is enabled, the heating controller lowers the control temperature by a predetermined temperature after a lapse of a predetermined time after the detected room temperature reaches the set temperature. Carry out.

The fluctuation operation means varies the heating amount of the heating source during the save operation of the final stage number (predetermined stage number).

[0014]

【The invention's effect】

[Claim 1] Since the fluctuation operation means changes the heating amount of the heating source during the save operation, even if the room temperature is lowered by the save operation, the user is sensitive to the peak of the heating amount in the fluctuation, so it is cold. I suddenly feel comfortable.

Further, the control temperature can be lowered as compared with the conventional warm air heater (because the user does not think it is cold).
Therefore, fuel efficiency is improved.

[Claim 2] Since the fluctuation operating means changes the heating amount of the heating source during the final stage of the save operation, the user is sensitive to the peak of the heating amount in the fluctuation even when the room temperature is low. I don't think it's cold so I feel comfortable.

Further, the control temperature can be lowered as compared with the conventional warm air heater (because the user does not think it is cold).
Therefore, fuel efficiency is improved. In addition, performing the fluctuation operation only during the final stage save operation reduces the effect of fluctuations because the user becomes accustomed to the fluctuation driving before reaching the lowest temperature final step number that requires fluctuation operation. This is to prevent this.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention (corresponding to claims 1, 2 and 3) will be described with reference to FIGS. FIG.
~ As shown in FIG. 3, the gas warm air heater A includes a gas combustor 1
1, a housing 1 having a convection fan 12, etc., a temperature setter 3 for setting the room temperature, and a room temperature sensor 4 for detecting the room temperature.
With the save operation unit 55, the gas combustor 1
1 and a controller 5 for controlling the convection fan 12.

The housing 1 (made of metal) is provided with inlets 14 and 15 for the indoor air 13 used for convection and combustion in the upper part of the back surface, and an outlet 17 for blowing hot air 16 into the room in the lower part of the front surface. ing. In addition, 18 is a duct that connects the inlet and the outlet, and 19 is an air guide path that guides the indoor air 13 as combustion air from the inlet to the gas combustor 11.

The gas combustor 11 includes a gas n ejected from a nozzle n arranged downstream of the air guide passage 19 and the air guide passage 19.
Mixing chamber 11 for mixing with indoor air 13 induced by
1, a combustion plate 112 made of ceramic, and an ignition electrode 113
And a combustion cylinder 115 in which a thermocouple 114 and the like are arranged. The nozzle n is formed at the tip of the gas pipe g in which the solenoid valves 116 and 117 and the proportional valve 118 are sequentially arranged.

The convection fan 12 comprises an impeller 121 pivotally mounted in the duct 18 on the downstream side of the gas combustor 11 and a fan motor 122 for driving the impeller 121. The temperature setting device 3 is a tact switch mounted in the operation unit 101 provided on the upper surface of the housing 1, and sets the set temperature between 16 ° C and 26 ° C. Room temperature sensor 4
Is a thermistor arranged in the air guide path 19 near the suction port 15.

Controller 5 having a microcomputer
3, the operation control unit 51, the initial room temperature detection unit 52, the temperature gradient detection unit 53, the timer unit 54, the save operation unit 55 having the save pattern storage unit 551, the fluctuation operation unit 56, and the temperature control The unit 57, a proportional valve drive circuit 58, and a fan drive circuit 59 are provided.

When the operation switch SW is turned on, the operation control unit 51 energizes the ignition electrode 113 for a predetermined time, opens the solenoid valves 116 and 117, and opens the proportional valve 11.
The gas combustor 11 is ignited with 8 as the ignition opening.
When the operation switch SW is turned off, the solenoid valves 116, 1
17, and the proportional valve 118 is closed, and the gas combustor 1
Extinguish one. In addition, during burning, the thermocouple 11
4 becomes less than a predetermined value, the solenoid valves 116, 1
17, and the proportional valve 118 is closed, and the gas combustor 1
Extinguish 1

The initial room temperature detecting section 52 detects the initial room temperature of operation based on the output signal sent from the room temperature sensor 4 one minute after ignition. The temperature gradient detection unit 53 detects the temperature gradient of the room temperature rise at the initial stage of operation based on the output signals sent from the room temperature sensor 4 1 minute after ignition and 5 minutes after ignition. After the operation is started, the timer unit 54 starts clocking when the detected room temperature detected by the room temperature sensor 4 reaches the set temperature set by the temperature setter 3.

The save operation unit 55 reduces the decrease ΔT (save amount) 30 minutes after the detected room temperature reaches the set temperature.
Based on the operating initial room temperature detected by the initial room temperature detecting section 52 and the temperature gradient detected by the temperature gradient detecting section 53, the save operation is performed with the save amount ΔT shown in Table 1. Instruct them to do so.

[Table 1]

The fluctuation operating unit 56 determines the reference heating capacity from the control temperature T ₁ and the detected room temperature Ts during the third stage (details will be described later) of the save operation, and presets the heating capacity to the determined heating capacity. Instruct to superimpose the fluctuation pattern.

The temperature control unit 57 receives the outputs of the room temperature sensor 4 and the temperature setter 3, and performs the forced strong combustion operation with the heating capacity of level 8 at the beginning of combustion. When setting, the forced strong combustion ends, after reaching detection room temperature T _S is the set temperature T _0, until the lapse of 30 minutes, and detected room temperature T _S detected by the temperature sensor 4, which is set at a temperature setter 3 Temperature T ₀
Based on the difference between and, the heating capacity (level 1 to level 7) is determined so that the detected room temperature T _S becomes the set temperature T ₀ .

When shifting to the save operation, the heating capacity (level 1 to level 7) is determined so that the detected room temperature T _S becomes the control temperature T ₁ . The control temperature T ₁ is T ₀ −ΔT from 30 minutes to 60 minutes, and T ₀ −2 × ΔT from 60 minutes to 90 minutes.
When the set temperature T ₀ deviates from 17 ° C to 25 ° C, the save operation is not started.

Furthermore, when the detected room temperature T _S reaches the set temperature T ₀ and the save operation shifts to the final stage (third stage) for more than 90 minutes, the control temperature T ₁ is set to the set temperature T ₀ -3 ×.
ΔT, and the reference heating capacity (level 1 to level 7) is determined so that the detected room temperature Ts becomes the control temperature T _1, and the fluctuation operation is performed. Vary the heating capacity between.

Specifically, a pattern preset so that the power spectrum of the temperature change becomes 1 / f with respect to the frequency f thereof is superimposed on the determined reference heating capacity to respond to the time change. It changes the heating capacity.

The proportional valve drive circuit 58, during the temperature control operation, has the heating capacity (level 1 to 1) determined by the temperature control controller 57.
Proportional valve 1 sets the current (1 to 7 steps) according to level 7)
Energize 18. During the temperature control operation, the fan drive circuit 59 sends a fan current to the fan motor 122 to obtain a fan rotation speed suitable for the heating capacity (level 1 to level 7) determined by the temperature control controller 57.

Next, the operation of the controller 5 relating to the save operation and the fluctuation operation will be described with reference to FIGS. 4 and 5. In step s1, the set temperature T is set by the temperature setter 3.
Set ₀ and proceed to step s2. The display 501 displays the set temperature (for example, 22 ° C.). When the operation switch SW is pressed in step s2, heating operation is started, and the process proceeds to step s3.

In step s3, the control temperature T ₁ is made to match the set temperature T ₀ , and the process proceeds to step s4. Step s4
Then, the initial room temperature detection unit 52 detects the initial room temperature of operation (1 minute after ignition). In step s5, the set temperature T ₀ is 17 ° C to
It is determined whether or not the temperature is between 25 ° C. If it is (YES), the process proceeds to step s6, and if it is out (NO), the save operation is not performed.

In step s6, the temperature gradient detector 53 detects the temperature gradient at the beginning of the operation. In step s7, the save operation unit 55 determines the reduction amount (save amount) ΔT based on the operation initial room temperature detected by the initial room temperature detection unit 52 and the temperature gradient detected by the temperature gradient detection unit 53.

In step s8, it is judged whether or not the detected room temperature T _S has reached the set temperature T _0. If it has (YES), the process proceeds to step s9. In step s9, the clock unit 54 starts measuring elapsed time. Step s10
Then, it is determined whether or not 30 minutes have passed since the arrival of T _S ≧ T ₀ , and if it has passed (YES), the process proceeds to step s11.

At step s11, the control temperature T ₁ = set temperature T ₀ -ΔT is executed to start the first-stage save operation {lights on the save lamp 502}, and then proceeds to step s12. In step s12, it is determined whether or not 60 minutes have passed since T _S ≧ T _{0 was} reached, and when it has passed (YES)
Proceeds to step s13.

In step s13, the control temperature T ₁ = set temperature T ₀ -2 × ΔT is executed to start the second-step save operation, and the process proceeds to step s14. In step s14, T _S
It is determined whether or not 90 minutes have passed since the arrival of ≧ T ₀ , and if it has passed (YES), the process proceeds to step s15.

In step s15, control temperature T ₁ = set temperature T ₀ -3 × ΔT is executed to start the third stage (final stage) of the save operation, and the process proceeds to step s16.

In step s16, the fluctuation driving section 56 gives an instruction for fluctuation driving. In the present embodiment, the heating capacity is fluctuated according to the time change by superimposing a preset fluctuation pattern on the reference heating capacity determined so that the detected temperature Ts becomes the control temperature T _1. There is.

Next, advantages of the gas warm air heater A of this embodiment will be described. [A] When the gas warm air heater A is set so as not to perform fluctuation operation and is tested under various conditions, the reduction width T in Table 1 is
Therefore, most of the subjects felt comfortable until the two-step save driving, but many subjects felt cold when the third-step save driving was performed.

However, when the fluctuating operation was made effective and the third-step save operation was carried out, the result was that most subjects did not feel cold. The gas warm air heater A that can perform the third-step save operation can reduce fuel consumption by about 10% at the maximum, compared with the gas warm air heater that performs the second-step save operation.

[A] During the fluctuation operation, centering on the reference heating capacity determined by the control temperature T ₁ and the detected temperature Ts,
Room temperature (detected temperature T
There is little variation in s). Therefore, the fluctuation pattern does not collapse with the lapse of time.

[C] The gas warm air heater A has a set temperature T _0.
Is 17 ° C. to 25 ° C., based on the operating initial room temperature detected by the initial room temperature detecting unit 52 and the temperature gradient detected by the temperature gradient detecting unit 53, automatically with the decrease width ΔT shown in Table 1, It is a configuration for performing an optimal save operation.

Therefore, the optimum save operation is performed, and the save operation switch is not required, so that the cost can be reduced and the inside of the operation unit 101 can be simplified.

The present invention includes the following embodiments in addition to the above embodiments. a. If the rotation speed of the convection fan 12 does not affect combustion (for example, the convection fan 12 and the combustion fan are separate ones), the rotation speed of the convection fan 12 is not changed, and the current flowing through the proportional valve 118 is not changed. The heating capacity may be varied by changing only the heating capacity.

B. If the save operation has a plurality of stages, the fluctuation operation may be performed before reaching the final stage {for example, the second stage}. In this case, it is preferable to make the fluctuation width smaller than the fluctuation operation at the final stage.

C. You may make it overlap a fluctuation pattern so that a reference | standard heating capacity may become a lower limit. d. The heating source may be an electric heater, a petroleum burner, or the like. e. The warm air heater may be a type (so-called FF type warm air heater) that takes in combustion air from the outside into the casing and discharges the exhaust to the outside without mixing with the taken-in indoor air.

F. The fluctuation pattern may not be 1 / f with respect to the frequency f. g. In the save operation, the set temperature may be lowered over time. In this case, the display of the set temperature drops with the passage of time.

[Brief description of drawings]

FIG. 1 is an external view of a gas warm air heater according to an embodiment of the present invention.

FIG. 2 is a structural explanatory view of the gas warm air heater.

FIG. 3 is a block diagram of the gas warm air heater.

FIG. 4 is a flowchart showing the operation of the gas warm air heater.

FIG. 5 is an explanatory diagram showing an operation of the gas warm air heater.

[Explanation of symbols]

A gas warm air heater 1 housing (heater housing) 3 temperature setter 4 room temperature sensor 5 controller (heating controller) 11 gas combustor (heating source) 12 convection fan (blower) 16 warm air 17 blowout port T _S Detected room temperature T ₀ Set temperature T ₁ Control temperature ΔT Decreased width (predetermined temperature) 55 Save operation section (save operation function) 56 Fluctuation operation section (fluctuation operation means)

Claims (2)

[Claims] 1. A heater housing which is equipped with a heating source and a blower and blows warm air into the room from an outlet, a room temperature setting device for setting the room temperature, a room temperature sensor for detecting the room temperature, and the detected room temperature maintains the control temperature. A heating controller having a save operation function of controlling the heating amount of the heating source so as to lower the control temperature with the passage of time, and heating the heater during the save operation. A warm air heater characterized by having a fluctuation operation means for varying the amount. 2. A heater housing provided with a heating source and a blower, which blows warm air into the room from an outlet, a room temperature setting device for setting the room temperature, a room temperature sensor for detecting the room temperature, and the detected room temperature maintains the control temperature. The heating amount of the heating source is controlled so that when the detected room temperature reaches the set temperature and a predetermined time elapses, the control temperature is decreased by a predetermined temperature at predetermined intervals until a predetermined number of steps is reached. A warm air heater including a heating controller having a save operation function, characterized in that a fluctuation operation means for varying the heating amount during the final stage of the save operation is provided.