JP2590062Y2 - Dehumidifier - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifier.

[0002]

2. Description of the Related Art Generally, a dehumidifier of this type is provided with a refrigerating circuit comprising a compressor, a condenser and the like, and the refrigerant is cooled by the refrigerating circuit. In addition, the dehumidifier has a cooling chamber, and an introduction pipe for introducing high-temperature humid air is provided in the cooling chamber.

When the high-temperature humid air is supplied from the outside to the cooling chamber via the introduction pipe, the high-temperature humid air comes into contact with the refrigeration circuit in the cooling chamber, and heat exchange occurs between the high-temperature humid air and the refrigerant. Done. As a result, the high-temperature humid air becomes cooled and dried air and is sent out again to the outside.

Further, the dehumidifier has a blower for cooling the refrigerant in the refrigeration circuit, and the blower blows the outside air around the dehumidifier toward the condenser.
This blower is driven based on the detection result of a temperature detecting means for detecting the refrigerant temperature in the refrigeration circuit, for example, a temperature sensor. That is, when the temperature of the refrigerant sent to the cooling chamber becomes high and good heat exchange cannot be performed, the blower is driven based on the detection result of the temperature detection means, and the refrigerant in the refrigeration circuit is cooled. On the other hand, when the refrigerant sent to the cooling chamber is sufficiently cooled and good heat exchange can be performed, the blower is stopped based on the detection result of the temperature detecting means.

[0005] The refrigeration circuit is connected to a bypass passage for bypassing the condenser and allowing the refrigerant to flow, and the bypass passage is provided with a pressure capacity adjusting valve. The pressure capacity adjusting valve is configured to shut off the communication of the bypass flow passage by the pressure fluctuation in the refrigeration circuit downstream of the condenser, so as to always keep the refrigerant pressure in the refrigeration circuit in the cooling chamber constant. .

[0006]

However, since the refrigerant is cooled by blowing outside air to the condenser, the cooling efficiency of the refrigerant changes depending on the temperature of the outside air. That is, when the outside air temperature is low, the refrigerant is efficiently cooled, and when the outside air temperature is high, the refrigerant is cooled slowly. Therefore,
There has been a problem that the temperature of the refrigerant discharged from the condenser changes due to a change in the outside air temperature, and the high-temperature humid air cannot be stably dehumidified in the cooling chamber.

In the case of a blower that blows air by rotating a fan with an electric motor, even if the electric motor is stopped, the fan does not stop immediately but is rotated for several tens of seconds due to inertia. Therefore, when the outside air temperature is low, the refrigerant is further cooled by the rotation of the fan for several tens of seconds due to the inertia, and the refrigerant is in a supercooled state. When the refrigerant is supercooled in the condenser and sent to the downstream side, the refrigerant pressure in the refrigeration circuit downstream of the condenser decreases. Then, the uncooled refrigerant is sent out to the refrigeration circuit on the downstream side of the condenser by the pressure capacity adjusting valve communicating with the bypass flow path. At this time, in the refrigeration circuit, the refrigerant cooled by the condenser and the uncooled refrigerant bypassing the condenser are mixed, and the refrigerant temperature fluctuates greatly. Therefore, good heat exchange between the refrigerant and the high-temperature humid air cannot be obtained in the cooling chamber, and the high-temperature humid air cannot be dehumidified stably.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to stably dehumidify a fluid to be dehumidified even when the outside air temperature around the dehumidifier changes. Another object of the present invention is to provide a dehumidifier capable of stably dehumidifying a fluid to be dehumidified even when the outside air temperature is low.

[0009]

In order to solve the above-mentioned problems, the present invention is directed to a compressor for compressing a refrigerant gas, and cooling the compressed refrigerant gas sent from the compressor to condense it into a liquid refrigerant. A condenser and a heat exchanger for evaporating the liquid refrigerant sent from the condenser, and a refrigeration circuit provided in the pipeline, respectively, and a blower for blowing outside air to the condenser. In a dehumidifier that cools and dehumidifies a fluid to be dehumidified, a blower drive control unit that drives and controls the blower, detects a temperature of outside air blown to a condenser by the blower, and outputs a detection signal corresponding to the temperature to the blower. First temperature detection means for outputting to the drive control means, and second temperature detection for detecting the temperature of the refrigerant cooled by the condenser and outputting a detection signal corresponding to the temperature to the blower drive control means hand The door is provided, the blower drive control means based on a detection signal of the first temperature detecting means, and drive the coolant temperature to drive the blower for each outside air temperature at that time, a temperature for stopping the blower of the blower Fa
Refrigerant that takes into account the amount of rotation caused by inertia
And when the refrigerant temperature detected by the second temperature detecting means is equal to or higher than the driving refrigerant temperature, the blower is driven, and the refrigerant temperature detected by the second temperature detecting means is the stop refrigerant temperature. The gist is to stop the blower when the following occurs.

According to a second aspect of the present invention, there is provided a compressor for compressing a refrigerant gas, a condenser for cooling the compressed refrigerant gas sent from the compressor and condensing it into a liquid refrigerant, and a liquid refrigerant sent from the condenser. A refrigeration circuit provided with a heat exchanger to evaporate in a pipeline, and a blower for blowing outside air to the condenser, wherein the heat exchanger cools and dehumidifies a fluid to be dehumidified by the dehumidifier. A first thermistor for detecting the temperature of the outside air blown to the condenser by the blower as a resistance value, a second thermistor for detecting the temperature of the refrigerant cooled in the condenser as a resistance value, and driving the blower And a blower drive control means for controlling the blower drive control means. The blower drive control means measures a combined resistance value which is a sum of the resistance values, and a drive resistance which is a combined resistance value when the dehumidified fluid cannot be dehumidified. And the resistance value, the blower is a value of the combined resistance value when the object to be dehumidified fluid is possible dehumidifier fan
Is provided with stop resistance data that considers the amount of rotation caused by inertia, drives the blower when the combined resistance value is equal to or less than the drive resistance value, and stops the blower when the combined resistance value is equal to or greater than the stop resistance value. Is the gist.

[0011]

Therefore, in the invention of claim 1, the refrigerant gas is compressed by the compressor to be compressed refrigerant gas and sent out to the condenser. The compressed refrigerant gas is cooled by the condenser to become a liquid refrigerant and sent out to the heat exchanger. The heat exchanger dehumidifies by cooling the fluid to be dehumidified, and the liquid refrigerant in the heat exchanger is evaporated by heat exchange with the fluid to be dehumidified. On the other hand, the first temperature detecting means detects the temperature of the outside air blown to the condenser by the blower, and outputs a detection signal corresponding to the temperature to the blower drive control means. Fan drive control means and drive the coolant temperature to drive the blower based on a detection signal of the first temperature sensing means, fan blowers a temperature for stopping the blower
Refrigerant temperature that takes into account the amount of rotation caused by inertia
Degree and determine. The second temperature detecting means detects the temperature of the refrigerant cooled by the condenser , and outputs a detection signal corresponding to the detected temperature to the blower drive control means. And
The blower drive control means drives the blower when the refrigerant temperature detected by the second temperature detection means is equal to or higher than the drive refrigerant temperature, and the refrigerant temperature detected by the second temperature detection means has become equal to or lower than the stop refrigerant temperature. When the blower is stopped.

According to the second aspect of the present invention, the refrigerant gas is compressed by the compressor to become a compressed refrigerant gas and sent out to the condenser. The compressed refrigerant gas is cooled by the condenser to become a liquid refrigerant and sent out to the heat exchanger. The heat exchanger dehumidifies by cooling the fluid to be dehumidified, and the liquid refrigerant in the heat exchanger is evaporated by heat exchange with the fluid to be dehumidified. On the other hand, the first thermistor detects the temperature of the outside air blown to the condenser by the blower as a resistance value, and the second temperature detection means detects the temperature of the refrigerant cooled by the condenser as the resistance value. Also, the fan drive control means is configured to measure the combined resistance value which is the sum of the resistance values of the first and second thermistors, the dehumidified stream
Driving resistance, which is the value of the combined resistance when the body cannot be dehumidified
And the combined resistance value when the fluid to be dehumidified can be dehumidified.
Value that the fan of the blower rotates due to inertia.
It has data on the stopping resistance value considered. The blower drive control means drives the blower when the combined resistance value is equal to or less than the drive resistance value, and stops the blower when the combined resistance value is equal to or greater than the stop resistance value.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the interior of the dehumidifier 1 is divided into a pre-cooling / reheating chamber 2 and a cooling chamber 3. First, a configuration of a refrigeration circuit R for cooling the cooling chamber 3 will be described. A compressor drive motor 6 is connected to a compressor 5 as a compressor, and the compressor drive motor 6 is connected to a power supply 7. Then, the compressor 5 is operated by driving the compressor drive motor 6, and
The refrigerant gas is compressed.

An accumulator 8 is mounted on the upstream side of the compressor 5. The accumulator 8 temporarily holds the liquid refrigerant, and does not supply the liquid refrigerant to the compressor 5 but supplies only the refrigerant gas.

A condenser 9 as a condenser is connected downstream of the compressor 5, and a fan 10 as a blower to the condenser 9 is installed near the condenser 9. A fan drive motor 11 is connected to the fan 10, and the fan drive motor 11
Power supply 7 via controller A for controlling drive of
It is connected to the. When the fan 10 is operated by the fan drive motor 11, the fan 10 blows the outside air around the dehumidifier 1 to the condenser 9, and cools the compressed refrigerant gas sent from the compressor 5 to the condenser 9. .

A first temperature sensor D1 is provided near the fan 10, and the first temperature sensor D1 is connected to the input side of the controller A. The first temperature sensor D1 detects the temperature of the outside air blown to the condenser 9 by the blower, and outputs the detection signal to the controller A.
Output.

A filter dryer 12 is mounted downstream of the condenser 9. This filter dryer 1
2, a filter and a desiccant are built in to remove dust, moisture and the like in the flow path. A second temperature sensor D2 is provided on the pipe surface between the condenser 9 and the filter dryer 12, and a second temperature sensor D2 is provided.
2 is connected to the input side of the controller A. The second temperature sensor D2 detects the temperature of the refrigerant cooled by the condenser 9, and outputs a detection signal to the input side of the controller A.

At the downstream side of the filter dryer 12, a capillary tube 13 which performs a pressure reducing operation is mounted. An orifice (not shown) is formed in the capillary tube 13 so as to reduce the pressure of the liquid refrigerant passing through the orifice.

A refrigeration passage 14 as a heat exchanger is connected to the downstream side of the capillary tube 13, and the refrigeration passage 14 is formed so as to meander in the cooling chamber 3. A large number of fins 14a are attached to the freezing passage 14 to further enhance the heat radiation effect. The downstream side of the refrigeration passage 14 is connected to the accumulator 8.

The main flow path R1 of the refrigeration circuit R is formed by the accumulator 8, the compressor 5, the condenser 9, the filter dryer 12, the capillary tube 13, and the refrigeration passage 14.

The main flow path R1 is connected to a bypass flow path R2 having a parallel relationship with the condenser 9, the filter dryer 12, and the capillary tube 13. The bypass flow path R2 is provided with a pressure capacity adjusting valve 15, which cuts off the communication of the bypass flow path R2. Note that the pressure capacity adjusting valve 15 is configured to cut off the communication of the bypass flow path R2 by the fluctuation of the pressure on the downstream side, so that the pressure on the downstream side, that is, the pressure in the freezing passage 14 is always kept constant.

Next, the configuration of the dehumidifying fluid circuit S, which supplies high-temperature humid air as a dehumidifying fluid from the external compressor 16 to convert it into cooling and drying air in the cooling chamber 3 and then take it out again, will be described.

The external compressor 16 has an air supply passage 1
7, the air supply passage 17 is connected to the pre-cooling
It is connected to the pre-cooling passage 18 in the reheating chamber 2. The precooling passage 18 is formed in a meandering manner.

Downstream of the pre-cooling passage 18, the cooling chamber 3
The inside cooling passage 19 is connected. Then, heat exchange is performed by contact between the high-temperature humid air passing through the cooling passage 19 and the freezing passage 14. The cooling chamber 3 communicates with a drain (not shown) via a drain outlet 20, and the water in the cooling chamber 3 is discharged from the drain outlet 20.

A reheat passage 22 in the precooling / reheater 2 is connected to the downstream side of the cooling passage 19 via a connection passage 21. The reheating passage 22 is formed to meander so as to be in contact with the pre-cooling passage 18. Further, an external air extraction passage 23 is connected downstream of the reheat passage 22.

The air supply passage 17 and the pre-cooling passage 1
8, the cooling passage 19, the connection passage 21, the reheating passage 22, and the air extraction passage 23 form a fluid circuit S to be dehumidified. Next, a controller A for controlling the drive of the fan drive motor 11 will be described. The controller A determines a refrigerant temperature set value for driving and stopping the fan drive motor 11 based on the detection signal of the first temperature sensor D1, that is, the temperature of the outside air blown to the condenser 9 by the fan 10. That is, as shown in FIG. 2, data of a drive temperature set value and a stop temperature set data which are uniquely determined with respect to the outside air temperature are read. The data of the drive temperature set value and the stop temperature set value with respect to the outside air temperature are stored in a memory built in the controller A in advance.

The controller A controls the drive of the fan drive motor 11 based on the detection signal of the second temperature sensor D 2, that is, the temperature of the refrigerant passing through the condenser 9. That is, when the temperature of the refrigerant that has passed through the condenser 9 is equal to or higher than the drive temperature set value, the controller A drives the fan drive motor 11 to cool the refrigerant. When the temperature of the refrigerant passing through the condenser 9 becomes equal to or lower than the stop temperature set value, the controller A stops the fan drive motor 11.

Therefore, as shown in FIG. 2, when the outside air temperature is low, the refrigerant is efficiently cooled by blowing air to the condenser 9, so that the drive temperature set value and the stop temperature temperature set value are set to high values. I have. Also, when the outside air temperature is high,
Since the refrigerant is hardly cooled even when air is blown to the condenser 9, the drive temperature set value and the stop temperature set value are set to low values.

Next, the dehumidifier 1 configured as described above
The operation of will be described. When the external compressor 16 is driven and high-temperature humid air is supplied from the air supply passage 17, the high-temperature humid air is introduced into the air extraction passage 23 through the precooling passage 18, the cooling passage 19, the connection passage 21, and the reheating passage 22. Moist air is supplied.

Next, when the compressor drive motor 6 starts driving, the refrigerant circulates in the refrigeration circuit R by the compressor 5. That is, the low-pressure cooling refrigerant gas is supplied to the compressor 5
The compressed gas is compressed into a compressed refrigerant gas and sent to the condenser 9. At this time, when the fan 10 blows the outside air around the dehumidifier 1 to the condenser 9, the compressed refrigerant gas passing through the condenser 9 is cooled and becomes the compressed liquid refrigerant. Then, after dust and moisture are removed by the filter dryer 12, the compressed liquid refrigerant is decompressed by the capillary tube 13 to become a low-pressure liquid refrigerant. When the liquid refrigerant passes through the refrigeration passage 14, heat exchange is performed between the liquid refrigerant and the high-temperature humid air passing through the cooling passage 19, and as a result, the liquid refrigerant in the refrigeration passage 14 becomes a low-pressure high-temperature refrigerant and is supplied to the accumulator 8. Supplied.

The high-temperature humid air is cooled and dehumidified by heat exchange to be cooled and dried air, and is connected to the connection passage 2.
1 to the reheat passage 22. This reheat passage 22
Is in contact with the pre-cooling passage 18, so that heat exchange is also performed at this contacted portion. That is, heat exchange is performed between the cooling and drying air in the reheating passage 22 and the high-temperature and humid air in the pre-cooling passage 18, and the cooling and drying air is warmed to dry air and sent to the air extraction passage 23, The hot humid air is pre-cooled.

On the other hand, the first temperature sensor D 1
And outputs a detection signal to the controller A. The controller A determines a coolant temperature set value for driving and stopping the fan drive motor 11 with respect to the outside air temperature at that time based on the detection signal. That is, as shown in FIG. 2, the data of the drive temperature set value and the stop temperature set value uniquely determined with respect to the outside air temperature are read from the memory built in the controller A, and correspond to the outside air temperature at that time. The drive temperature set value and the stop temperature set value are determined.

When the temperature of the outside air blown by the fan 10 is high, for example, 30 ° C., the drive temperature set value is set to 40 ° C. and the stop temperature set value is set to 35 ° C. That is, when the temperature of the refrigerant passing through the condenser 9 becomes equal to or higher than 40 ° C., the controller A drives the fan drive motor 11 to blow outside air to the condenser 9 to cool the refrigerant. At this time, since the temperature of the outside air is as high as 30 ° C., the cooling efficiency of the refrigerant is low, and the refrigerant passing through the condenser 9 is gradually cooled. Then, the temperature of the refrigerant passing through the condenser 9 becomes 35
C. or less, the controller A operates the fan drive motor 1
Stop 1

The fan 10 does not stop immediately after the fan drive motor 11 stops, but continues to rotate for several tens of seconds due to inertia. At this time, since the outside air temperature and the refrigerant temperature at which the fan drive motor 11 stops are close to each other, the refrigerant is not affected even if the fan 10 rotates for several tens of seconds due to inertia and air is blown. . Therefore, the temperature of the refrigerant passing through the condenser 9 is approximately 35 ° C.

Next, when the temperature of the outside air blown by the fan 10 is low, for example, 10 ° C., the drive temperature set value is set to 45 ° C. and the stop temperature set value is set to 40 ° C. That is, when the temperature of the refrigerant passing through the condenser 9 becomes 45 ° C. or higher, the controller A drives the fan drive motor 11 to blow outside air to the condenser 9 to cool the refrigerant. At this time, since the temperature of the outside air is as low as 10 ° C., the cooling efficiency is high and the refrigerant passing through the condenser 9 is quickly cooled. Then, when the temperature of the refrigerant passing through the condenser 9 becomes 40 ° C. or lower, the controller A stops the fan drive motor 11.

The fan 10 does not stop immediately after the fan drive motor 11 stops, but continues to rotate for 10 seconds due to inertia and blow. Since the temperature of the outside air and the temperature of the refrigerant at which the fan drive motor 11 stops are distant values, the refrigerant is further cooled when the fan 10 is rotated for several tens of seconds by the inertia to blow air. However, since the stop temperature set value for stopping the fan drive motor 11 is previously set to a high value,
The refrigerant temperature at this time is substantially the same as the temperature of the refrigerant sent from the condenser 9 when the outside air temperature is 30 ° C., that is, 35 ° C.

Therefore, even if the outside air temperature changes, the refrigerant temperature sent from the condenser 9 is always 35 ° C.
Stable heat exchange is performed between the refrigerant and the high-temperature humid air in the cooling chamber, and the high-temperature humid air is stably dehumidified. Also, when the fan drive motor 11 is stopped when the outside air temperature is low, even if the fan 10 rotates for several tens of seconds due to inertia and blows air, the stop temperature set value is set in advance to a high value of 40 ° C. Therefore, the refrigerant is not supercooled.

As described in detail above, in the present embodiment, based on the temperature of the outside air blown to the condenser 9, the refrigerant temperature set value for driving and stopping the fan drive motor 11 with respect to the outside air temperature at that time is determined. did. Then, the drive of the fan drive motor 11 is controlled based on the set value of the refrigerant temperature. That is, when the outside air temperature is low, when the air is blown to the condenser 9, the refrigerant is efficiently cooled, so that the drive temperature set value and the stop temperature set value are set to high values,
When the temperature of the refrigerant is high, the fan drive motor is driven and stopped. When the outside air temperature is high, the refrigerant is hardly cooled even when air is blown to the condenser 9, so that the drive temperature set value and the stop temperature set value are set to low values, and the fan drive motor 11 is driven when the refrigerant temperature is low. And stopped.

Therefore, even if the outside air temperature changes, a constant temperature refrigerant can be sent out from the condenser 9. As a result, heat exchange between the refrigerant and the high-temperature humid air in the cooling chamber 3 is performed stably, so that the high-temperature humid air supplied to the cooling chamber 3 can be dehumidified stably.

In this embodiment, when the outside air temperature is low, the stop temperature set value for stopping the fan drive motor 11 is set to a high value in advance. Therefore, when the fan drive motor 11 is stopped, the refrigerant is not supercooled even if the fan 10 rotates for several tens of seconds due to inertia and performs extra air blowing, and the temperature of the refrigerant sent from the condenser 9 is maintained at an appropriate temperature. be able to. As a result, the refrigerant pressure in the refrigeration passage 14 does not easily decrease, so that the communication frequency of the pressure capacity adjusting valve 15 decreases, and the refrigerant temperature in the refrigeration passage 14 can be stabilized.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. Note that the same parts and configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 3, an outside air temperature detecting thermistor 24 as a first thermistor and a refrigerant temperature detecting thermistor 25 as a second thermistor are connected in series, and each thermistor 24, 25 is connected to a controller A. Have been. The controller A is connected to each thermistor 24, 25
In this embodiment, a very small current, for example, 1 mA can be passed. And each thermistor 24,
When a current flows through 25, the outside air temperature detection thermistor 24 indicates a resistance value corresponding to the outside air temperature, and the refrigerant temperature detection thermistor 25 indicates a resistance value corresponding to the temperature of the refrigerant passing through the condenser 9. Each thermistor 2
The resistance values of 4, 25 are smaller as the outside air temperature and the refrigerant temperature are higher.

The controller A calculates a combined resistance value X, which is the sum of the resistance value of the outside air temperature detection thermistor 24 and the resistance value of the refrigerant temperature detection thermistor 25. 11 is driven and controlled. That is, as shown in FIG. 4, the combined resistance value X is determined based on the outside air temperature and the refrigerant temperature, and the controller A drives the fan drive motor 11 when the combined resistance value X becomes equal to or less than the drive resistance value XS. Controller A
When the combined resistance value X becomes equal to or greater than the stop resistance value XE, the fan drive motor 11 is stopped. The driving resistance value XS is the value of the combined resistance value X when the high-temperature humid air cannot be dehumidified, and the stop resistance value XE is the value of the combined resistance value X when the high-temperature humid air can be dehumidified. The drive resistance value XS is smaller than the stop resistance value XE, and the resistance values XS and X
The value of E is stored in a memory built in the controller A in advance.

Since the combined resistance value X is determined by the outside air temperature and the temperature of the refrigerant passing through the condenser 9, when the outside air temperature and the temperature of the refrigerant passing through the condenser 9 change, the combined resistance value X also changes. Further, since the drive resistance value XS and the stop resistance value XE are constant values, the fan drive motor 11
Is changed based on a change in the outside air temperature. Therefore, the temperature of the refrigerant for driving and stopping the fan drive motor 11 is determined based on the outside air temperature. That is, when the outside air temperature is high, the drive start refrigerant temperature for driving and stopping the fan drive motor 11 and the stop start refrigerant temperature are set low. When the outside air temperature is low, the drive start refrigerant temperature for driving and stopping the fan drive motor 11 and the stop start refrigerant temperature are set high.

As described in detail above, in this embodiment, the refrigerant is cooled slowly when the outside air temperature is high, so that the drive start refrigerant temperature and the stop start refrigerant temperature are set low, and the fan is started while the refrigerant temperature is low. The drive motor 11 is driven and stopped. Further, when the outside air temperature is low, the refrigerant is cooled quickly, so that the drive start refrigerant temperature and the stop start refrigerant temperature are set high, and the fan drive motor 11 is driven and stopped after the refrigerant temperature becomes high.

Therefore, even if the outside air temperature changes, a constant temperature refrigerant can be sent out from the condenser 9. As a result, the heat exchange between the refrigerant and the high-temperature humid air in the cooling chamber 3 is performed stably, so that the high-temperature humid air supplied to the cooling chamber 3 can be stably dehumidified.

In this embodiment, when the outside air temperature is low, the stop start refrigerant temperature for stopping the fan drive motor 11 is set high. Therefore, the fan drive motor 11
When the fan is stopped, even if the fan 10 rotates for several tens of seconds due to inertia and performs extra air blowing, the refrigerant is not supercooled, and the temperature of the refrigerant sent from the condenser 9 can be kept at an appropriate temperature. As a result, the refrigerant pressure in the refrigeration passage 14 does not easily decrease, so that the communication frequency of the pressure capacity adjusting valve 15 decreases, and the refrigerant temperature in the refrigeration passage 14 can be stabilized.

It should be noted that the present invention is not limited to the above embodiment, and may be embodied with the following modifications, for example. (1) In the first embodiment, as shown in FIG. 5, a controller box 26 containing a controller A is formed in a substantially rectangular parallelepiped, and a first temperature sensor D
Attach 1 and connect to controller A. And the second
The sensor wiring 27 of the temperature sensor D2 of the controller A
Connect to Further, the controller A may be provided with a power supply connection terminal 28 and a fan drive motor connection terminal 29, and the controller A may be attached to the dehumidifier 1. In this case, since the control system is integrated in the controller box 26, the control system can be easily installed in the dehumidifier 1 by attaching the controller box 26. Further, in this case, it is possible to easily install the dehumidifier 1 already manufactured. Incidentally, it may be embodied in the second embodiment.

(2) In the first embodiment, the outside air temperature is 10 ° C.
The drive temperature set value is 45 ° C and the stop temperature set value is 40
° C, and when the outside air temperature is 30 ° C, the drive temperature set value is 40
C. and the stop temperature set value were 35 ° C., but the present invention is not limited to this. That is, the drive temperature set value and the stop temperature set value uniquely determined with respect to the outside air temperature may be appropriately changed. In this case, the data of the drive temperature set value and the stop temperature set value stored in the memory of the controller A may be changed.

In the second embodiment, when the drive resistance value XS and the stop resistance value XE stored in the memory of the controller A are changed, the drive start refrigerant temperature for driving and stopping the fan drive motor 11 and the stop temperature are determined. It is possible to change the starting refrigerant temperature.

(3) In the first embodiment, the first temperature sensor D
1 is installed in the vicinity of the fan 10, but if the outside air temperature does not change drastically, the installation position of the first temperature sensor D1 may be appropriately changed. Further, if the temperature of the refrigerant passing through the condenser 9 can be detected, the attachment position of the second temperature sensor D2 may be appropriately changed. The same applies to the second embodiment.

[0053]

According to the present invention, as described above in detail, even when the outside air temperature around the dehumidifier changes, the air is discharged from the condenser.
The temperature of the refrigerant to be discharged can be appropriately maintained. others
The heat exchange between the refrigerant and the fluid to be dehumidified by the heat exchanger
Dehumidifying fluid to be dehumidified stably.
Can be.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a dehumidifier of a first embodiment.

FIG. 2 is an explanatory diagram showing data of a drive temperature set value and a stop temperature command value uniquely determined with respect to an outside air temperature.

FIG. 3 is a configuration diagram illustrating an electrical configuration of a dehumidifier according to a second embodiment.

FIG. 4 is an explanatory diagram showing a combined resistance value X determined based on an outside air temperature and a refrigerant temperature.

FIG. 5 is a perspective view showing another example.

[Explanation of symbols]

5 Compressor as compressor, 9 Condenser as condenser, 10 and 11 Fan and fan drive motor as blower, 14 Refrigeration passage as heat exchanger, 2
4 ... the outside air temperature detection thermistor as the first thermistor, 25 ... the refrigerant temperature detection thermistor as the second thermistor, A ... the controller as the blower drive control means, D1 ... the first temperature as the first temperature detection means Sensor, D2: second temperature sensor as second temperature detecting means, X: combined resistance value, XS: drive resistance value, XE: stop resistance value.

Claims (2)

(57) [Scope of request for utility model registration] A compressor (5) for compressing a refrigerant gas, a condenser (9) for cooling a compressed refrigerant gas sent from the compressor (5) and condensing it into a liquid refrigerant, and a condenser (9). A refrigeration circuit (R) provided with a heat exchanger (14) for evaporating the sent liquid refrigerant in a pipe, and blowers (10, 11) for blowing outside air to the condenser (9). A dehumidifier for cooling and dehumidifying a fluid to be dehumidified by the heat exchanger (14), wherein the blower drive control means (A) for driving and controlling the blowers (10, 11); and the condensate by the blowers (10, 11). First temperature detection means (D1) for detecting the temperature of the outside air blown to the fan (9) and outputting a detection signal corresponding to the temperature to the blower drive control means (A); ) To detect the temperature of the cooled refrigerant,
A second temperature detection means (D2) for outputting a detection signal corresponding to the temperature to the blower drive control means (A); and the blower drive control means (A) is provided with a first temperature detection means (D1). ), Based on the detection signal, a driving refrigerant temperature for driving the blower (10, 11) for each outside air temperature at that time ;
The temperature at which the blowers (10, 11) are stopped,
The fan (10) of the fan (10, 11) is turned by inertia.
Determining a stop refrigerant temperature in which the amount of rotation is taken into consideration, and when the refrigerant temperature detected by the second temperature detection means (D2) becomes equal to or higher than the drive refrigerant temperature, the blower (10, 11)
Is driven, and when the refrigerant temperature detected by the second temperature detecting means (D2) falls below the stop refrigerant temperature, the blower (1
0, 11). 2. A compressor (5) for compressing a refrigerant gas, a condenser (9) for cooling the compressed refrigerant gas sent from the compressor (5) and condensing it into a liquid refrigerant, and a condenser (9). A refrigeration circuit (R) provided with a heat exchanger (14) for evaporating the sent liquid refrigerant in a pipe, and blowers (10, 11) for blowing outside air to the condenser (9). A dehumidifier for cooling and dehumidifying a fluid to be dehumidified by the heat exchanger (14), wherein a temperature of outside air blown to the condenser (9) by the blowers (10, 11) is detected as a resistance value. A thermistor (24), a second thermistor (25) for detecting the temperature of the refrigerant cooled in the condenser (9) as a resistance value, and a blower drive control for driving and controlling the blowers (10, 11). Means (A), the blower drive control The means (A) measures a combined resistance value (X) which is a sum of the resistance values and a drive resistance value (XS) which is a value of the combined resistance value (X) when the dehumidified fluid cannot be dehumidified. ) and the blower to a value of the combined resistance value (X) when the object to be dehumidified fluid is possible dehumidifier (10,1
Considering that the fan (10) of 1) rotates due to inertia
When the combined resistance value (X) becomes equal to or less than the drive resistance value (XS), the blower (10, 11) is driven, and the combined resistance value (X) is set to the stop resistance value. A dehumidifier that stops the blower (10, 11) when the value exceeds the value (XE).