JP2001090990A - Dehumidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dehumidifier the dehumidification capacity is enhanced and also the drop of dehumidification capacity under low temperature can be suppressed by suppressing the room temperature rise in continuous operation under standard test conditions (27 deg.C in room temperature and 60% in relative humidity). SOLUTION: The first condenser 21, an evaporator 23, and the second condenser 22 are arranged in this order from the windward, and the supply quantity of a refrigerant to the first condensers 21 and 22 is regulated by a flow regulating valve 34. Under standard test conditions, the evaporation temperature of the evaporator 23 is lowered by the first condenser 21, whereby the dehumidification capacity rises, and besides the condensation load of a compressor 27 is reduced by arranging two units of condensers thereby suppressing the rise of indoor temperature. Moreover, at low temperature, the quantity of radiated heat is increased by increasing the quantity of a refrigerant supplied to the first condenser 21, and the drop of dehumidification capacity is suppressed by suppressing the frost deposition on the evaporator 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifier suitable for use as a household dehumidifier requiring energy saving and compactness.

[0002]

2. Description of the Related Art Many conventional home dehumidifiers are provided with two heat exchangers, and as shown in FIG. 10, an evaporator (cooler) 4 arranged on the windward side in the indoor air a1. The moisture is removed, the dehumidified air a2 is heated and dried by a condenser (radiator) 2 arranged on the leeward side, and the dried air a3 is sent into the room by a built-in blower (not shown). .

[0003] Explaining the above operation from the flow of the refrigerant, the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 is supplied to the condenser 2 and thereby becomes a high-temperature and high-pressure liquid. This liquid becomes a low-temperature and low-pressure liquid by passing through a capillary tube (also called a capillary tube) 3 as a refrigerant controller, and enters the evaporator 4. In the evaporator 4, the low-temperature low-pressure liquid refrigerant evaporates by absorbing the heat of the indoor air a1.
The gas becomes low-temperature and low-pressure gas, enters the inlet of the compressor 1, and is discharged from the compressor 1 as high-temperature and high-pressure gas again. Thereafter, the above operation is repeated.

[0004] In the cooling operation of an air conditioner, it is required that the indoor temperature is reduced and dehumidification is performed. However, in a home dehumidifier, dehumidification is performed and the indoor temperature does not fluctuate. Has been requested. However, it has been known that when the conventional household dehumidifier is continuously operated, the relative humidity (absolute humidity) decreases, but the room temperature increases.

[0005] Japanese Industrial Standards (JIS) C9617,
"Electrical dehumidifier with a total power consumption of 500 W or less due to the electric motor required to exhibit the dehumidifying capacity, with a built-in compression refrigerator, blower, etc. for the purpose of reducing indoor humidity. Machine ”. Standard test (confirmation test of dehumidification amount) of this conventional household dehumidifier in this standard (27 ° C, relative humidity 60%)
When the continuous operation is performed in the vicinity of the above condition, the room temperature becomes 27 ° C. or higher and becomes higher than the outside air temperature, which is contrary to the performance required for the dehumidifier in the basic design. This is because a temperature range exceeding 27 ° C. is a cooling range.

[0006] Dehumidifiers are often used also when the room temperature is low, such as in winter, but in the above-mentioned conventional dehumidifiers, frost begins to form on the evaporator (cooler) in a low-temperature region around 16 ° C. There is a problem that the capacity of the compressor is reduced.
When the capacity of the compressor is reduced, the dehumidifying capacity of the dehumidifier is greatly reduced.

Further, the conventional home dehumidifier has a problem that the refrigeration cycle does not operate stably even with a small load change outside the home dehumidifier, so that the dehumidification capacity is reduced.

On the other hand, for example, Japanese Unexamined Utility Model Publication No. 58-126622 discloses that a condenser, an evaporator, a condenser and
A commercial dehumidifier having a configuration in which two heat exchangers are arranged is described. 11 and 12 show the configuration of the dehumidifier described in the above publication. The first condenser 7, the evaporator 8, the second condenser 9, and the blower 11 are provided from the inlet 12 to the outlet 13 in the air circulation line in the machine frame 6. Humid air flowing in from the air is dehumidified with a large temperature difference, and is blown as heated dry air.

In the figure, reference numeral 10 designates an external condenser, which is a thermostat 1 when the room temperature exceeds a predetermined temperature.
7, the switching valves 18a and 18b are switched in accordance with the output of the first and second condensers 7 and 9 to the external condenser 10 by switching the supply destination of the refrigerant discharged from the compressor 14.
This is for keeping the room temperature below a predetermined temperature. Reference numeral 14 denotes a compressor, 15 denotes an accumulator (gas-liquid separator), and 16 denotes a liquid receiver.

The dehumidifier described in the above publication is advantageous in that the dehumidifying capacity is greatly improved as compared with the above-mentioned household dehumidifier in which one condenser and one evaporator are arranged, but the operation is difficult. It cannot meet the above-mentioned demands for energy saving and compactness required for home dehumidifiers, such as the electric power required, the refrigerant circulation amount, and the performance of the compressor.

Since the capacity of the two condensers 7 and 9 is fixed, the temperature range in which the performance thereof is sufficiently exhibited is narrow. That is, in general, the performance of the compressor decreases as the temperature decreases, and the heat radiation amount of the condenser also considerably decreases. Therefore, compared with the dehumidification amount under the conditions of the standard test, the low temperature test (also specified in JISC9617) is performed. Under the conditions of A) and (B) (18 ° C. and 5
C), the amount of dehumidification may be significantly reduced.

[0012]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made to improve the dehumidifying capacity by suppressing an increase in room temperature in continuous operation under the conditions of the standard test. An object of the present invention is to provide a dehumidifier capable of suppressing a decrease in dehumidifying capacity under test conditions.

[0013]

The object of the present invention is to provide a main body in which an air inlet and an air outlet are formed, and to arrange inside the main body in order from the air inlet to the air outlet. A first condenser, an evaporator, and a second condenser, a compressor that circulates refrigerant through the first condenser, the evaporator, and the second condenser, and the air that is discharged from the air suction port side. This problem is solved by a dehumidifier including a blower that forms a flow of air toward an outlet side and an adjusting unit that adjusts a heat release amount of the first condenser.

In the configuration according to claim 1 of the present invention, the first,
By reducing the condensation load of the compressor using the second two condensers, the amount of heat released from the condenser and the compressor is reduced to suppress the rise in the indoor temperature, and the first condenser is connected to the evaporator. It is intended to improve the dehumidifying ability by arranging it on the windward side. At the same time, an adjusting means for adjusting the heat radiation amount of the first condenser is provided to improve the dehumidifying capacity under standard test conditions and low-temperature test conditions specified in JISC9617. That is, by increasing the amount of heat released from the first condenser under the low-temperature test condition as compared with the standard test condition, it compensates for the decrease in the performance of the compressor due to the low temperature, and maintains the high dehumidifying capacity while suppressing the frost of the evaporator. Like that.

As one configuration example of the adjusting means, an adjusting valve for adjusting the flow rate of the refrigerant supplied from the compressor to the first condenser is provided at an inlet of the first condenser. Thereby, the first
It is possible to adjust the amount of refrigerant supplied to the condenser to adjust the amount of heat radiation, and the first condition can be achieved under low-temperature operating conditions.
It is possible to increase the amount of refrigerant supplied to the condenser to increase the amount of heat radiation, and to suppress a decrease in the dehumidifying capacity.

Further, as another configuration example, the first condenser is divided and arranged in parallel into a front body disposed on the air suction port side of the main body and a rear body disposed on the evaporator side, and As the adjusting means, a first state in which the refrigerant discharged from the compressor is supplied only to the rear body and a second state in which the refrigerant is supplied to both the front body and the rear body are selectively adopted. By providing the obtained switching valve, it is possible to easily adjust the heat radiation amount of the first condenser according to the operating conditions.

[0017] On the other hand, the above-mentioned problem is also caused by a main body in which an air intake port and an air exhaust port are formed, and a main body arranged inside the main body in order from the air intake port side to the air exhaust port side. 1 condenser, an evaporator and a second condenser, a compressor for circulating a refrigerant through the first condenser, the evaporator and the second condenser, and from the air suction port side to the air discharge port side The problem is solved by a dehumidifier including a blower that forms a flow of air and a shutoff valve that can shut off supply of refrigerant from the compressor to the second condenser.

That is, the structure according to claim 4 of the present invention is effective when the room temperature is lower than a certain low temperature range. By supplying all the refrigerant to the first condenser to increase the amount of heat radiation, the frost of the evaporator can be improved. It is possible to suppress the adhesion and maintain and improve the dehumidifying ability.

[0019] Further, the above-mentioned problem is caused by a main body in which an air inlet and an air outlet are formed, and a first body arranged inside the main body in order from the air inlet to the air outlet. A condenser, a first evaporator, a second evaporator, and a second condenser; a compressor for circulating a refrigerant to the first and second condensers and the first and second evaporators; and the air suction port A blower for forming a flow of air from the side to the air outlet side,
A dehumidifier comprising: a closing valve capable of shutting off supply of refrigerant from the second evaporator to the compressor.

That is, according to a fifth aspect of the present invention, when the room temperature is relatively high, the closing valve is closed so that only the first evaporator functions, and when the room temperature is relatively low, the closing valve is closed. Is opened to allow the second evaporator to function together with the first evaporator. Therefore, the first and second evaporators function together to increase the evaporating temperature, thereby suppressing the frost of the evaporator at a low temperature and improving the dehumidifying ability.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a dehumidifier according to a first embodiment of the present invention. The dehumidifier 20 in the present embodiment is configured as a handy type household dehumidifier, and mainly includes a first condenser 21, a second condenser 22, an evaporator 23, a blower 25, a compressor 27, and these devices. It consists of a body 24 to be housed.

An air inlet 24A and an air outlet 24B are formed in the main body 24. An air flow from the air inlet 24A to the air outlet 24B is formed by driving the blower 25. The first condenser 21 is disposed closest to the air suction port 24A, and thereafter, the evaporator 2
3, the second condenser 22 and the blower 25 are arranged in order. Below the main body 24, a tank 26 for storing moisture in the air dehumidified by the evaporator 23, and the first and second condensers 2 are provided.
A compressor 27 for circulating and circulating a refrigerant to the evaporators 23 is accommodated.

The first and second condensers 21 and 22 and the evaporator 23, which are vertically arranged in the vertical direction, have the same configuration, and a plurality of radiation fins 28 are arranged at an equal pitch as is well known. And a refrigerant circulating pipe 29 arranged to penetrate the radiating fins 28 (see FIG. 3). In the present embodiment, both the radiation fins 28 and the circulation pipe 29 are made of aluminum.

FIG. 2 shows a piping system of a refrigerant supply system to the first and second condensers 21 and 22 and the evaporator 23.
The high-temperature and high-pressure refrigerant gas discharged from the compressor 27 is supplied to the pipe 3
It is supplied to first and second condensers 21 and 22 arranged in parallel through 8 and 30. Here, an adjustment valve 34 capable of adjusting the flow rate of the refrigerant is provided on the inlet side of the first condenser 21. The refrigerant flowing out of the first and second condensers 21 and 22 is supplied to the capillary tube 32 through the pipe 31 and decompressed, and reaches the evaporator 23. Then, the refrigerant flowing out of the evaporator 23 is introduced into the gas-liquid separator 35 via the pipe 33,
Only the gaseous refrigerant is supplied to the suction port of the compressor 27.

With the above structure, referring to FIG.
Indoor air b1 sucked from the air suction port 24A of No. 4
Is heated by passing through the first condenser 21,
The heated air b2 reaches the evaporator 23. Here, the heated air b2 is dehumidified and cooled by a dehumidification amount corresponding to a temperature difference from the surface temperature of the evaporator 23. The air b3 that has passed through the evaporator 23 is reheated to the room temperature by the second condenser 22, becomes heated and dried air b4, and is discharged into the room through the air discharge port 24B of the main body 24. By continuously performing the above operations, the humidity in the indoor air is reduced.

Therefore, according to the present embodiment, FIG.
The temperature of the air introduced into the evaporator 23 is higher at the same room temperature than the conventional home dehumidifier described with reference to FIG. Can be formed, and the dehumidifying ability can be increased accordingly. In other words, the first condenser 21 lowers the evaporation temperature of the evaporator 23, so that more water can be removed from the air.

In this embodiment, since the first and second condensers 21 and 22 are arranged in parallel, the condensation load of the refrigerant is greatly reduced as compared with a conventional home dehumidifier. This allows the compressor 27 and these condensers 2
Since the heat radiation from the first and the second 22 can be reduced as compared with the conventional case, the rise in the room temperature due to the continuous operation under the standard test conditions specified in JISC9617 is suppressed.

FIG. 4 shows the above operation of the present embodiment on a performance diagram of a compressor. Assuming that the evaporation temperature and the condensation temperature of the conventional household dehumidifier are, for example, 10 ° C. and 50 ° C., under the same temperature and relative humidity conditions, in the present embodiment, the evaporation temperature and the condensation temperature are 7 ° C. and 7 ° C., respectively. It can be seen that the temperature can be set to about 40 ° C., whereby the power consumption is reduced and the refrigerating capacity (that is, the dehumidifying capacity) is improved. Such an effect can be obtained by lowering the condensation temperature so as not to lower the evaporation temperature and the capacity of the compressor 27.

In the present embodiment, an adjusting valve 34 for adjusting the flow rate of the refrigerant is provided on the inlet side of the first condenser 21.
It is provided as adjusting means for adjusting the heat radiation amount of the first condenser 21. In the present embodiment, the control valve 34 is controlled in accordance with the room temperature to adjust the heat release amount of the first condenser 21.

In the present embodiment, for example, when the room temperature is around 27 ° C., the supply amount of the refrigerant to the first condenser 21 is 25% and the supply amount of the refrigerant to the second condenser 22 is 75% of the whole refrigerant.
% Of the regulating valve 34 is controlled. Thereby, it is possible to obtain a higher dehumidifying capacity as compared with a conventional home dehumidifier while suppressing an increase in the indoor temperature.

On the other hand, when the room temperature is, for example, between 18 ° C. and 25 ° C., the amount of the refrigerant supplied to the first condenser 21 is 50% of the total refrigerant (therefore, the amount of the refrigerant supplied to the second condenser 22 is also 50%). %). Thereby, the amount of heat radiation of the first condenser 21 is increased, and frost on the evaporator 23 is suppressed. At the same time, the compressor 2
7 to maintain the high dehumidification capacity.

Tables 1 to 3 show data on the amount of dehumidification, power consumption and dehumidification efficiency performed in a prefabricated warehouse without adjusting the temperature and humidity under the above conditions, in comparison with a conventional household dehumidifier. . It can be seen that the power consumption does not change much when the dehumidification amount in the present invention is 950 cc or 300 cc. In addition, according to the present invention, it can be seen that the dehumidifying efficiency is 2 to 2.4 times that of the related art.

[0034]

[Table 1]

[0035]

[Table 2]

[0036]

[Table 3]

Therefore, as shown in FIG. 5, according to the dehumidifier of the present invention, the same amount of dehumidification can be obtained with less power consumption than the conventional home dehumidifier, and the same power consumption can be obtained. If so, a greater amount of dehumidification can be obtained.

The adjustment of the adjustment valve 34 may be performed manually, but a control method using a computer that adjusts the adjustment valve 34 based on the output of the temperature sensor may be employed.

According to the present embodiment, the room temperature is 30
(For example, overload test conditions (room temperature 32 ° C., relative humidity 46
%)), A high dehumidifying capacity can be obtained by the action of the first condenser 21.

In this embodiment, a known defrosting mechanism for the evaporator 23 is provided in addition to the above configuration. Referring to FIG. 2, a mechanism for directly sending the high-temperature and high-pressure gas refrigerant discharged from compressor 27 to evaporator 23 without passing through condensers 21 and 22 and capillary tube 32 is provided. And an on-off valve 37 provided in the pipeline 36.

On the other hand, in the present embodiment, since a hydrocarbon-based refrigerant such as isobutane and propane, which has a known ozone depletion potential of zero, is used, there is no danger of destruction of the ozone layer, and suppression of global warming. To contribute. In addition, the same dehumidifying capacity as that of the conventional refrigerant can be obtained with a smaller amount of refrigerant than that of the conventional CFC-based refrigerant, and the power consumption is lower than that of the conventional refrigerant.

Further, in this embodiment, the condensers 21 and 22
And all the components that make up the evaporator 23 (radiation fins 2
8 and the circulation pipe 29) are made of aluminum, so that the material can be easily recycled and resources can be effectively used. Further, the weight of the entire dehumidifier 20 is reduced.

FIGS. 6 and 7 show a second embodiment of the present invention. In the figure, the same reference numerals are given to portions corresponding to the above-described first embodiment, and the detailed description thereof will be omitted.

That is, in the present embodiment, the first condenser 2
1 is composed of two condensers, a front body 21a and a rear body 21b. A total of four heat exchangers are housed and arranged inside the main body 24. One front body 21a is disposed on the air intake port 24A side (windward side) of the main body 24, and the other rear body 21b
Is disposed on the evaporator 23 side (downwind side).

Referring to FIG. 7, the front body 21a and the rear body 21b are arranged in parallel with the compressor 27, and a switching valve 40 is provided on the inlet side of the front body 21a. I have. The switching valve 40 has a shut-off position for setting the first state in which the refrigerant supplied from the compressor 27 through the pipe 30 is supplied only to the rear body 21b, and the refrigerant is supplied to both the front body 21a and the rear body 21b. And a communication position for setting a second state for supplying to the second member.

Therefore, in the present embodiment, when the room temperature is under the low temperature test (A) condition (18 ° C.) (18 ° C.), the first state in which the switching valve 40 is switched to the shut-off position and only the rear body 21b supplies the refrigerant is set. In this way, the dehumidifying ability is maintained by suppressing the frost of the evaporation temperature. On the other hand, when the room temperature is under the low temperature test (B) condition (5 ° C.) (5 ° C.), the switching valve 40 is switched to the communicating position to take the second state of supplying the refrigerant to the front body 21a and the rear body 21b, Thus, the frost of the 23 is suppressed, and the high dehumidifying ability is further maintained.

The present embodiment is a configuration example in which the amount of heat released from the first condenser 21 is adjusted as described above to improve the dehumidifying capacity particularly under low-temperature test conditions. In order to suppress the rise in room temperature and improve the dehumidifying capacity under the test conditions, as described in the above-described first embodiment, a refrigerant flow control valve is provided on the inlet side of the rear body 21b, not shown, The switching valve 40 may be set to the first state, and the amount of heat radiation of the rear body 21b may be adjusted by adjusting the flow control valve.

FIG. 8 shows a third embodiment of the present invention. In the figure, the same reference numerals are given to portions corresponding to the above-described first embodiment, and the detailed description thereof will be omitted.

In the present embodiment, a shutoff valve 41 capable of shutting off the supply of the refrigerant to the second condenser 22 is provided on the inlet side of the second condenser 22. That is, in the present embodiment, when the room temperature is lower than a certain low temperature (for example, 5 ° C. or lower), the supply of the refrigerant from the compressor 27 to the second condenser 22 is shut off by the shutoff valve 41 and the total amount of the refrigerant is reduced The heat is supplied to one condenser 21 to increase the amount of heat radiation.

In the present embodiment, the present invention is used for improving the surrounding environment, for example, preventing dew condensation on a wall, preventing moisture in a basement, etc., rather than interpersonal. A high dehumidifying capacity is also desired in such a usage mode, and in the present embodiment, the above-described configuration is employed to suppress frost on the evaporator 23 and maintain or improve the dehumidifying capacity.

FIG. 9 shows a fourth embodiment of the present invention. In the figure, the same reference numerals are given to portions corresponding to the above-described first embodiment, and the detailed description thereof will be omitted.

In this embodiment, the first condenser 21 and the second condenser 21
Each of the above-described embodiments is characterized in that two evaporators arranged between the condenser 22 and the first evaporator 23a and the second evaporator 23b are arranged in parallel with the compressor 27. Has a different configuration. At the outlet side of the second evaporator 23b, a closing valve 44 capable of shutting off the supply of the refrigerant to the compressor 27 is provided. When the room temperature is low, for example, 18 ° C. or lower, the closing valve 44 is fully opened. First and second evaporators 23a, 2
Refrigerant is supplied to both 3b so as to increase the evaporating temperature of the refrigerant as compared with the case of one evaporator. In other words, by increasing the evaporation temperature of the evaporator, the frost of the evaporator is prevented, and a decrease in the dehumidifying capacity due to the frost of the evaporator is suppressed. According to the present embodiment, as in the above-described third embodiment, the dehumidifying ability in a low-temperature region can be improved.

In a temperature range where the room temperature exceeds, for example, 18 ° C., the shut-off valve 44 is fully closed to shut off the supply of the refrigerant from the second evaporator 23b to the compressor 27, thereby reducing the function of the second evaporator 23b. By lowering it, the dehumidifying ability is improved by the same operation as in the first embodiment. That is, the first
The condenser 21 lowers the evaporation temperature of the evaporator 23a to improve the amount of dehumidification.

As described above, in the present embodiment, the evaporation temperature is lowered to increase the dehumidification amount in a high temperature range, and the evaporation temperature is increased in consideration of the performance of the compressor 27 in a low temperature range. The amount of dehumidification is increased.

In this embodiment, instead of the capillary tube used in each of the above embodiments as the refrigerant controller, an expansion valve 43 controlled by the temperature of the refrigerant is applied. Since the capillary tube controls the refrigerant by the pressure difference, it is expected that it is difficult to accurately control the refrigerant by following the rise of the evaporation pressure due to the operation of the first and second evaporators 23a and 23b. This is because that.

Although the embodiments of the present invention have been described above, the present invention is, of course, not limited to these embodiments.
Various modifications are possible based on the technical idea of the present invention.

For example, in the above-described first and second embodiments, in order to adjust the heat release amount of the first condenser 21, the supply amount of the refrigerant is adjusted (the first embodiment), Although the condenser is composed of two units (second embodiment), the number of the radiating fins (or the arrangement pitch) of the first condenser is made variable instead. Can be adjusted.

[0058]

As described above, according to the dehumidifier of the present invention, the following effects can be obtained.

That is, according to the first, second and third aspects of the present invention, it is possible to suppress the rise of the room temperature even in the continuous operation at a room temperature of about 27 ° C., and it is most suitable for household use having a better dehumidifying ability than the conventional one. A dehumidifier can be obtained. Further, it is possible to obtain a dehumidifier capable of suppressing a decrease in the dehumidifying ability in a low temperature range and maintaining a high dehumidifying ability.

Further, according to the fourth aspect of the present invention, it is possible to obtain a dehumidifier in which a decrease in the dehumidifying ability in an extremely low temperature range is suppressed. A great effect can be obtained for improvement.

According to the fifth aspect of the present invention, the frost of the evaporator is suppressed by increasing the evaporating temperature of the evaporator in the low temperature range, thereby improving the dehumidifying ability in the low temperature range. Can be planned.

Further, according to the sixth aspect of the present invention, not only a refrigerant which does not contribute to the destruction of the ozone layer which is of concern on a global scale but also contributes to the protection of the environment, but also has a smaller amount than conventional refrigerants. Thus, it is possible to further reduce energy consumption while obtaining the same dehumidifying ability as before.

Further, according to the seventh aspect of the present invention, it is possible to facilitate the recycling of the heat exchanger constituent materials, to effectively use resources, and to reduce the weight of the entire dehumidifier. .

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an entire dehumidifier according to a first embodiment of the present invention.

FIG. 2 is a piping system diagram according to the first embodiment of the present invention.

FIG. 3 is a side view of a main part according to the first embodiment of the present invention.

FIG. 4 is a diagram showing the operation of the present invention in a performance diagram of a compressor.

FIG. 5 is a diagram showing the relationship between the amount of dehumidification and the power consumption for comparing the dehumidifier according to the first embodiment of the present invention with a conventional household dehumidifier.

FIG. 6 is a perspective view of a main part according to a second embodiment of the present invention.

FIG. 7 is a piping system diagram according to a second embodiment of the present invention.

FIG. 8 is a piping system diagram according to a third embodiment of the present invention.

FIG. 9 is a piping system diagram according to a fourth embodiment of the present invention.

FIG. 10 is a side view showing a main part of a conventional household dehumidifier.

FIG. 11 is a cross-sectional view showing the configuration of another conventional commercial dehumidifier.

FIG. 12 is a piping system diagram of the dehumidifier shown in FIG.

[Explanation of symbols]

 Reference Signs List 20 dehumidifier 21 first condenser 21a front body 21b rear body 22 second condenser 23 evaporator 23a first evaporator 23b second evaporator 24 body 24A air inlet 24B air outlet 25 blower 27 compressor 28 radiation fin 29 Circulation pipe 34 Regulator valve 40 Switching valve 41 Shutoff valve 44 Shutoff valve

Claims (7)

[Claims] 1. A main body having an air inlet and an air outlet formed therein, and a first condenser and an evaporator arranged inside the main body in order from the air inlet to the air outlet. And a second condenser; a compressor for circulating and circulating a refrigerant to the first and second condensers and the evaporator; and a blower for forming an air flow from the air suction port side to the air discharge port side. A dehumidifier comprising adjusting means for adjusting a heat radiation amount of the first condenser. 2. The dehumidifier according to claim 1, wherein the adjusting means is an adjusting valve for adjusting a flow rate of the refrigerant supplied from the compressor to the first condenser. 3. The compressor according to claim 1, wherein the first condenser includes a front body disposed on the air inlet side and a rear body disposed on the evaporator side arranged in parallel. A switching valve that can selectively adopt a first state of supplying the refrigerant discharged from the rear body only to the rear body and a second state of supplying the refrigerant to both the front body and the rear body. The dehumidifier according to claim 1, which is used. 4. A main body having an air inlet and an air outlet formed therein, and a first condenser and an evaporator arranged inside the main body in order from the air inlet to the air outlet. And a second condenser; a compressor for circulating and circulating a refrigerant to the first and second condensers and the evaporator; and a blower for forming an air flow from the air suction port side to the air discharge port side. A dehumidifier comprising a shut-off valve capable of shutting off supply of refrigerant from the compressor to the second condenser. 5. A main body in which an air inlet and an air outlet are formed, a first condenser and a first condenser arranged inside the main body in order from the air inlet to the air outlet. An evaporator, a second evaporator, and a second condenser; a compressor that circulates a refrigerant to the first and second condensers and the first and second evaporators; A dehumidifier comprising: a blower for forming a flow of air to an outlet side; and a closing valve capable of shutting off supply of refrigerant from the second evaporator to the compressor. 6. The dehumidifier according to claim 1, wherein the refrigerant is a hydrocarbon-based refrigerant. 7. The dehumidifier according to claim 1, wherein the first condenser, the evaporator, and the second condenser are all made of aluminum parts.