KR102095000B1 - Dehumidifier - Google Patents

Abstract

This embodiment is an evaporator; A condenser spaced apart from the evaporator; A fan that flows air in order of evaporator and condenser; A sensible heat exchanger including a pipe through which liquid circulates; A storage tank and a pump disposed in the pipe; It includes a control unit for controlling the output of the pump, the pipe includes a pre-cooler unit located before the evaporator, and a heating unit located between the evaporator and the condenser.

Description

Dehumidifier

The present invention relates to a dehumidifier, and more particularly, to a dehumidifier in which a sensible heat exchanger is disposed around the evaporator.

A dehumidifier is an air conditioner for lowering humidity, and can lower relative humidity by directly removing moisture in the air.

The dehumidifier removes moisture from the air, and can be divided into a cooling type and a drying type.

Dry dehumidifiers use a chemical absorbent, which absorbs or adsorbs moisture in the air directly, like dehumidifying products used at home. If the absorbent no longer absorbs moisture, the absorbent can be used again by heating the absorbent again and sending the separated moisture out of the dehumidifier. This method is useful for removing a small amount of moisture in an enclosed space. The hygroscopic agent includes silica gel, which is a porous material having excellent ability to adsorb moisture.

Cooled dehumidifiers control moisture by condensing water vapor in the air with water. To condense water vapor, the temperature of the air must be reduced below the dew point . Therefore, the cooling dehumidifier uses a refrigerant for cooling.

The refrigerant dehumidifier includes a compressor through which the refrigerant is circulated, a condenser, an expansion mechanism and an evaporator.

The dehumidifier can lower the evaporator load if the pre-cooler portion (inlet side heat pipe) of the heat pipe is placed in the air flow direction and the heat release portion (outlet side heat pipe) is placed after the evaporator. , It can reduce the power consumption of the compressor.

The dehumidifier in which the above heater pipe is disposed before and after the evaporator is disclosed in Korean Patent Publication No. 10-2013-0008864 A (published on January 23, 2013).

Republic of Korea Patent Publication No. 10-2013-0008864 A (released on January 23, 2013)

A dehumidifier having a heat pipe according to the prior art may have a low dehumidification performance when operating in a low-temperature environment, causing dehumidification, and when operating in a high-humidity environment, condensed water is generated in the pre-cooling section, making it difficult to keep the pre-cooling section clean have.

An object of the present invention is to provide a dehumidifier capable of improving dehumidification performance while minimizing the generation of condensate in the precooler.

Another object of the present invention is to provide a dehumidifier capable of adjusting the flow rate of the liquid circulating in the sensible heat exchanger in response to ambient humidity.

Another object of the present invention is to provide a dehumidifier capable of improving dehumidification performance while minimizing the formation of an evaporator.

Dehumidifier according to an embodiment of the present invention; A condenser spaced apart from the evaporator; A fan that flows air in the order of the evaporator and condenser; A sensible heat exchanger including a pipe through which liquid circulates, and a heating portion in which the pipe is located between the evaporator and the condenser, and a pre-cooler portion located before the evaporator; A storage tank and a pump disposed in the pipe; It includes a control unit for controlling the output of the pump.

 The sensible heat exchanger may include a plurality of unit heat exchange units that are continuous in the flow direction of the liquid. Each of the plurality of unit heat exchange units includes a heating unit and a pre-cooler unit, and a first return unit guiding the liquid passing through the heating unit to the pre-cooler unit and a liquid guiding the liquid passing through the pre-cooler unit to the heating unit of the other unit heat exchange unit It may include a two-return part.

 The plurality of unit heat exchange units may be sequentially arranged in a direction perpendicular to the flow direction of air.

The sensible heat exchanger may further include a precooler pin connected to the precooler unit of the plurality of unit heat exchange units, and a heating pin connected to the heating unit of the plurality of unit heat exchange units.

The dehumidifier may further include a temperature sensor that senses the temperature of the return part between the outlet of the heating part and the inlet of the precooler part.

If the temperature of the return unit is equal to or higher than the dew point temperature of air flowing into the precooler unit, and the evaporator temperature of the evaporator is greater than or equal to the set temperature, the controller may control the pump to the maximum output.

 The control unit may lower the output of the pump when the temperature of the return unit is lower than that of the air flowing toward the precooler unit.

 The control unit may lower the output of the pump until the temperature of the return unit exceeds the dew point temperature.

The controller may lower the output of the pump if the evaporator temperature of the evaporator is less than the set temperature and the evaporator temperature of the evaporator decreases more than the set temperature fluctuation value after the initial set time elapses after the dehumidifier is started.

According to an embodiment of the present invention, by controlling the flow rate of the sensible heat exchanger, it is possible to minimize the generation of condensed water in the precooler unit.

In addition, by controlling the flow rate of the sensible heat exchanger, the temperature of the air flowing into the evaporator after being cooled by the precooler unit can be controlled, thereby minimizing frost frost on the evaporator or delaying the frost frost.

1 is a longitudinal sectional view of a dehumidifier according to an embodiment of the present invention,
Figure 2 is a plan view showing the evaporator, condenser and sensible heat exchanger of a dehumidifier according to an embodiment of the present invention,
3 is a perspective view of a sensible heat exchanger according to an embodiment of the present invention,
4 is a control block diagram of a dehumidifier according to an embodiment of the present invention
5 is a perspective view of a sensible heat exchanger according to another embodiment of the present invention.

Hereinafter, a specific embodiment of the present invention will be described in detail with the accompanying drawings.

1 is a longitudinal sectional view of a dehumidifier according to an embodiment of the present invention, and FIG. 2 is a plan view showing an evaporator, a condenser and a sensible heat exchanger of the dehumidifier according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention It is a perspective view of a sensible heat exchanger according to an example, and FIG. 4 is a control block diagram of a dehumidifier according to an embodiment of the present invention.

The dehumidifier includes a case (1), an evaporator (2); A condenser 3 spaced apart from the evaporator 2; It may include a fan (4) for flowing air in order of the evaporator (2) and the condenser (3), and a sensible heat exchanger (5) disposed around the evaporator (2).

The case 1 may include an intake body 12 in which an air intake 11 is formed. The case 1 may include a discharge body 14 in which an air discharge port 13 is formed. The case 1 may include a base 15 forming a bottom surface appearance of the dehumidifier. The case 1 may further include an outer cover 16 covering both sides of the evaporator 2. '

The suction body 12 may be arranged to face the sensible heat exchanger 5.

The dehumidifier is a compressor (17) for compressing refrigerant, a drain pan (18) receiving condensed water dropped from the evaporator (2) or a sensible heat exchanger (5), and a bucket (19) for condensed water dropped into the drain pan (18). It may further include.

The compressor 17, the drain fan 18, and the water bottle 19 may be disposed inside the case 1. The interior of the case 1 may be arranged a barrier 20 that partitions the interior of the case 1 into a compressor receiving space in which the compressor 17 is accommodated, and a bucket receiving space in which the bucket 19 is located. The drain pan 19 may be disposed on the top of the barrier 20.

The evaporator 2 may be disposed inside the case 1. The evaporator 2 may have an evaporation pin 24 coupled to at least one evaporation tube 22.

The condenser 3 may be disposed inside the case 1. The condenser 3 may be arranged to be spaced apart from the evaporator 2. A gap G in which a part of the sensible heat exchanger 5 can be accommodated may be formed between the condenser 3 and the evaporator 2.

The fan 4 may flow air in order of the evaporator 2 and the condenser 3. The fan 4 may include a motor 42 and a blower 44 connected to the motor 42 and rotated.

The sensible heat exchanger 5 may be located before and after the evaporator 2 in the air flow direction X. The sensible heat exchanger 5 may include a pipe 6 through which liquid circulates, and may include a storage tank 7 and a pump 8 disposed in the pipe 6.

The liquid circulating through the pipe 6 may be coolant such as water or coolant, and the coolant may circulate through the pipe 6 and the storage tank 7 and the pump 8.

A part of the pipe 6 is located after the evaporator 2 in the air flow direction X to heat the air cooled by the evaporator 2. The pipe 6 may include a heating part 10 positioned between the evaporator 2 and the condenser 3.

The other part of the piping 6 is located in the air flow direction X before the evaporator 2 to precool the air flowing toward the evaporator 2. The piping 6 may include a precooler portion 20 located before the evaporator 2. The liquid passing through the precooler unit 20 may lower the sensible heat load of air flowing into the evaporator 2 by the precooler unit 20, and in this case, the dehumidifying efficiency by the evaporator 2 may be increased. have.

The piping 6 may include a plurality of unit heat exchange units H1 to H12 continuous in the flow direction of the liquid. Each of the plurality of unit heat exchange units H1 to H12 may extend along the front, left, right, and rear sides of the evaporator 2.

Each of the plurality of unit heat exchange units H1 to H12 may include a heating unit 10, a precooler unit 20, and a pair of return units 30 and 40.

The heating unit 10 may be arranged to be elongated in a direction Y perpendicular to the air flow direction X after the evaporator 2 in the air flow direction X. A plurality of heating units 10 may be provided after the air flow direction (X) of the evaporator 2, and the plurality of heating units 10 may include a longitudinal direction (Y) and an air flow direction (X) of the heating units 10. They may be spaced apart from each other in an orthogonal direction Z.

The precooler unit 20 may be arranged to be elongated in a direction (Y) orthogonal to the air flow direction (X) before the evaporator (2) in the air flow direction (X). The pre-cooler unit 20 may be provided before the evaporator 2 in the air flow direction (X), and the plurality of pre-cooler units 20 may be provided in the longitudinal direction (Y) and air flow of the pre-cooler unit 20. The directions (X) may be spaced apart from each other in a direction (Z) orthogonal to each.

The pair of return units 30 and 40 may include a first return unit 30 and a second return unit 40. The first return unit 30 may guide the liquid that has passed through the heating unit 10 to the precooler unit 20.

The second return unit 40 includes a second return unit 40 that guides the liquid passing through the pre-cooler unit 20 to the heating unit 10 of another unit heat exchange unit continuous in the longitudinal direction of the pipe 6 can do.

One of the first return unit 30 and the second return unit 40 may be a left return unit located on the left side of the evaporator 2, as shown in FIG. 2, and the first return unit 30 and Another one of the second return units 40 may be a right return unit located on the left side of the evaporator 2.

The plurality of unit heat exchange units H1 to H12 may be sequentially arranged in a direction Y perpendicular to the flow direction X of air. For example, when air flows in the front-rear direction X, the plurality of unit heat exchange units H1 to H12 may be sequentially arranged in the vertical direction Z, and the lowest unit heat exchange unit H1 having the lowest height. ) And at least one intermediate unit heat exchange unit H2 to H11 may be disposed between the highest and highest unit heat exchange unit H12. The sensible heat exchanger 5 may include a plurality of intermediate unit heat exchange units H2 to H11, and the plurality of intermediate unit heat exchange units H2 to H11 may be sequentially arranged in the vertical direction Z.

Any one of the lowermost unit heat exchange unit H1 and the uppermost unit heat exchange unit H12 may be an inlet unit heat exchange unit into which liquid pumped from the pump 8 is introduced. And, the other of the lowermost unit heat exchange unit (H1) and the uppermost unit heat exchange unit (H12) is the outlet side through which the liquid passing through the plurality of unit heat exchange units (H1 ~ H2) sequentially flows out to flow into the storage tank (6) It may be a unit heat exchange unit.

The sensible heat exchanger 5 may further include a heating pin 50 connected to the heating units 20 of the plurality of unit heat exchange units H1 to H12.

The sensible heat exchanger 5 may further include a precooler pin 60 connected to the precooler parts 20 of the plurality of unit heat exchange parts H1 to H12.

The pipe 6 includes a pump connection pipe 70 (see FIG. 2) connecting any one of the plurality of unit heat exchange units H1 to H12 (H1) and the pump 8, and a plurality of unit heat exchange units H1 to H12 A storage tank connection pipe 80 (see FIG. 2) connecting the other one H12 and the storage tank 7 may be included.

The reservoir 7 and the pump 8 can be directly connected, it is also possible to be connected to a separate reservoir pump connection pipe (90, see FIG. 3). When the reservoir 7 and the pump 8 are directly connected, the outlet of the reservoir 7 may be connected to the inlet of the pump 8.

Reservoir 7 is to contain the liquid circulating through the pipe 6, it can be located before and after the pump 8 in the direction of the liquid flow of the pipe (6). The reservoir 7 may be disposed around the sensible heat exchanger 6.

The pump 8 pumps the liquid so that the liquid can circulate through the pipe 6 and can be disposed around the sensible heat exchanger 5. The pump 8 can be configured as a variable speed pump, and can be controlled to a maximum output according to an input current value.

The dehumidifier may further include a temperature sensor 100 that senses the temperature of the sensible heat exchanger 5. The temperature sensor 100 preferably senses the temperature of the liquid flowing into the precooler unit 20, and senses the temperature between the outlet 12 of the heating unit 10 and the inlet 22 of the precooler unit 20. Can be placed.

Temperature sensor 100 is preferably disposed in any one of a plurality of unit heat exchange units (H1 ~ H12), the heating unit 10, the return unit connecting the outlet 12 and the precooler 20 inlet 22 ( 30). It is preferable that the temperature sensor 100 senses the temperature of the first return unit 30 of the inlet unit heat exchange unit H1 among the plurality of unit heat exchange units H1 to H12.

The temperature sensor 100 may transmit a signal of the sensed sensing value to the controller 100.

The dehumidifier may further include an evaporator temperature sensor 104 installed in the evaporator 2. The evaporator temperature sensor 102 may be installed in the evaporator 3 and may transmit a signal of the sensed sensing value to the controller 100.

The dehumidifier may further include an external air sensor 104 that senses the temperature of the air flowing toward the precooler unit 20, and a humidity sensor 106 that senses the humidity of the air flowing toward the precooler unit 20. You can.

Each of the outdoor sensor 104 and the humidity sensor 106 may transmit a signal of the sensed sensing value to the control unit 100.

The dehumidifier includes a control unit 110 that controls the dehumidifier. The dehumidifier may further include a storage unit 112 such as a memory in which various data are stored.

The control unit 110 can control the fan 4, the pump 8 and the compressor 17. The controller 110 may drive the fan 4 and the pump 8 and the compressor 17 when the dehumidifier is operating.

The control unit 110 may control the output of the pump 8.

The control unit 100 may calculate the dew point temperature of air flowing toward the precooler unit 20 by the outside air temperature sensed by the outside air sensor 104 and the humidity sensed by the humidity sensor 106. The control unit 110 may store the calculated dew point temperature in the storage unit 112.

The control unit 100 may control the output of the pump 8 to minimize the generation of condensate in the precooler unit 20.

In addition, the control unit 100 may control the output of the pump 8 so that the implantation of the evaporator 2 is minimized.

When the condensate is not generated in the precooler unit 20 and the idea of the evaporator 2 is not generated, the control unit 100 may control the pump 8 to the maximum output.

If the condensed water is generated in the precooler unit 20 or the condition in which the evaporator 2 is generated, the control unit 100 does not control the pump 8 to the maximum power and pumps the pump 8 to a lower power than the maximum power. ) Can be controlled.

If the temperature of the return unit 30 is above the dew point temperature of the air flowing into the precooler unit 20, and the evaporator 2 has an evaporation temperature equal to or higher than the set temperature, the controller 7 outputs the maximum pump 7 Can be controlled.

If the temperature of the return unit 30 is greater than or equal to the dew point temperature of the air flowing into the precooler unit 20, condensate is not generated in the precooler unit 20, and the control unit 110 has liquid in the piping 6 The control unit 100 may control the pump 7 to the maximum output so that the heating unit 10 and the precooler unit 20 can be circulated as quickly as possible.

Here, the set temperature may be a temperature at which no implantation is generated in the evaporator 2, for example, it may be O ° C.

On the other hand, if the evaporation temperature of the evaporator 2 is high, such as O ° C, no frost is generated in the evaporator 2, and even in this case, the control unit 110 can quickly heat the liquid in the piping 6 as much as possible. ) And the pre-cooler unit 20 so that the control unit 100 can control the pump 7 to the maximum output.

That is, the condition in which the temperature of the return unit 30 is equal to or greater than the dew point temperature may be a first condition in which condensate is not generated in the precooler unit 20. In addition, a condition in which the evaporation temperature of the evaporator 2 is equal to or higher than a set temperature (for example, O ° C.) may be a second condition in which no evaporation occurs in the evaporator 2, and the controller 100 may If all the second conditions are satisfied, the pump 7 can be controlled to the maximum output.

On the other hand, when the temperature of the return unit 30 is lower than the air flowing into the precooler unit 20 during the operation of the dehumidifier as described above, the control unit 110 may lower the output of the pump 7. In this case, the control unit 110 may lower the output of the pump 7 until the temperature of the return unit 30 exceeds the dew point temperature. The control unit 110 may gradually lower the output of the pump 7, and in this case, the time when the condensed water is implanted in the precooler unit 20 may be delayed as much as possible. When the output of the pump 7 is lowered by the control unit 110, the flow rate of the liquid circulating through the pipe 6 is reduced, and the temperature of the air cooled by the precooler unit 20 is the maximum of the pump 7 When controlled by the output, the temperature is increased, and the generation of condensate in the precooler unit 20 can be minimized.

The controller 110, after the dehumidifier starts, evaporator temperature of the evaporator 2 is less than a set temperature after the initial set time (for example, 10 minutes), and the evaporator temperature of the evaporator 2 is a set temperature fluctuation value (for example, For example, if it is reduced by 0.5 ° C or more, the output of the pump 7 can be lowered.

The initial set time may be a time until the cycle stabilizes when the dehumidifier is operated. In this case, the controller 110 may vary the output of the pump 7 according to the change in the evaporation temperature sensed after the cycle is stabilized.

In addition, the set temperature may be a temperature at which no implantation is generated in the evaporator 2, and may be, for example, O ° C.

In addition, the set temperature fluctuation value may be a reference fluctuation value for determining whether the evaporator 2 is implanted, or may be, for example, 0.5 ° C.

After the initial set time, which is the stabilization time, the control unit 110 has a condition in which the evaporation temperature of the evaporator 2 is lower than the set temperature and a change value of the evaporation temperature after the initial set time has elapsed (that is, the previous stabilization). Evaporation temperature-If the current stabilized evaporation temperature) satisfies all conditions that exceed the set temperature fluctuation value (for example, 0.5 ° C), the output of the pump 7 is gradually increased to minimize the formation of an implantation in the evaporator 2. Can be lowered.

For example, the set temperature fluctuation value is 0.5 ° C, the evaporation temperature of the evaporator 2 measured after the initial set time is -1 ° C, and the evaporation temperature of the current evaporator 2 measured thereafter is -2 ° C. On the other hand, the evaporation temperature of the evaporator 2 is reduced by 0.5 ° C or more, which is a set temperature fluctuation value, and the control unit 110 can gradually lower the output of the pump 7.

When the output of the pump 7 is lowered during the operation of the dehumidifier as described above, the flow rate of the liquid circulating through the pipe 6 is reduced, and the temperature of the air passing through the pre-cooler unit 20 is the maximum output of the pump 7 It is higher when it is controlled by, and when the pump 7 is controlled to the maximum output, air of higher temperature is introduced into the evaporator 2, and the implantation of the evaporator 2 can be delayed or minimized as much as possible.

5 is a perspective view of a sensible heat exchanger according to another embodiment of the present invention.

The sensible heat exchanger of this embodiment has a plurality of unit heat exchange units (H1 ') (H2') (H3 ') (S4') (S5 ') (H6')) each with a pair of heating units (10 ') and a pair. It may include a pre-cooler unit 20 ', the first return unit 30 and the second return unit 40.

The pair of heating parts 10 'may be connected by a return band 19, and the pair of pre-cooler parts 20' may be connected by a return band 29, the first return part 30 Can connect one of the pair of heating parts 10 'and one of the pair of precooler parts 20'.

The second return unit 30 may connect any one of the pair of heating units 10 ′ adjacent to the other unit heat exchange unit in the longitudinal direction of the pipe 6 with the other one of the pair of pre-cooler units 20 ′. have.

In the present embodiment, any one of the first return unit 30 and the second return unit 40 may be located on the other side, and in this case, a plurality of unit heat exchange units H1 'constituting the sensible heat exchanger. (H2 ') (H3') (S4 ') (S5') (H6 ') Each may be disposed along the front of the evaporator 2 and one side of the rear of the evaporator 2 and the left and right sides of the evaporator 2. .

This embodiment uses the same reference numerals because the other heating elements 10 'and the two precooler portions 20' have the same or similar configuration and operation as the one embodiment of the present invention, except that they constitute a unit heat exchanger. Detailed description thereof will be omitted.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

2: Evaporator 3: Condenser
4: fan; 5: sensible heat exchanger
6: Piping 7: Storage tank
8: Pump 10: Heating section
20: evaporation unit 110: control unit

Claims (9)

evaporator;
A condenser spaced apart from the evaporator;
A fan that flows air in the order of the evaporator and condenser;
A sensible heat exchanger including a pipe through which liquid circulates;
A storage tank and a pump disposed in the pipe;
A temperature sensor for sensing the temperature of the return part between the outlet of the heating part and the inlet of the precooler part; And
It includes a control unit for controlling the output of the pump,
The piping,
A precooler part through which the refrigerant passes before entering the evaporator, a heating part positioned between the evaporator and the condenser, and a return part connecting the precooler part and the heating part,
The control unit,
If the temperature of the return unit measured through the temperature sensor is equal to or greater than the dew point temperature of air flowing into the precooler unit, and the evaporator temperature of the evaporator is greater than or equal to the set temperature, the dehumidifier increases the pump to a preset output. According to claim 1,
The sensible heat exchanger includes a plurality of unit heat exchange units continuous in the flow direction of the liquid,
Each of the plurality of unit heat exchange units
It includes the heating portion and the pre-cooler portion,
The return unit,
A first return unit for guiding the liquid passing through the heating unit to the precooler unit,
A dehumidifier including a second return portion for guiding the liquid passing through the precooler portion to the heating portion of another unit heat exchange portion. According to claim 2,
The plurality of unit heat exchange units are dehumidifiers sequentially arranged in a direction perpendicular to the flow direction of air. According to claim 2,
The sensible heat exchanger
A precooler pin connected to the precooler unit of the plurality of unit heat exchange units,
A dehumidifier further comprising a heating pin connected to the heating unit of the plurality of unit heat exchange units. delete delete According to claim 1,
When the temperature of the return unit is lower than the dew point temperature of air flowing into the precooler unit, the dehumidifier lowers the output of the pump. The method of claim 7,
The control unit dehumidifies the output of the pump until the temperature of the return unit exceeds the dew point temperature. According to claim 1,
The controller dehumidifier lowers the output of the pump when the evaporator temperature of the evaporator is less than a set temperature after the initial set time elapses after the dehumidifier is started, and when the evaporator temperature of the evaporator is reduced by more than a set temperature fluctuation value.

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