KR20160098806A - Driving apparatus of dehumidfier - Google Patents

Abstract

A driving apparatus of a dehumidifier is disclosed. According to the present invention, the driving apparatus of a dehumidifier comprises: a humidity sensor to sense ambient humidity; a temperature sensor to sense the ambient temperature; a plurality of capillary tubes installed in a front end of an evaporator; a capillary tube selection unit selecting at least one among the capillary tubes to supply a refrigerant to the evaporator; and a control unit determining a refrigerant circulation amount in accordance with the ambient humidity and the ambient temperature inputted from the humidity sensor and the temperature sensor, respectively, and controlling the capillary tube selection unit based on the refrigerant circulation amount.

Description

[0001] DRIVING APPARATUS OF DEHUMIDFIER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a driving device for a dehumidifier, and more particularly, to a driving device for a dehumidifier that selects one of a plurality of capillaries according to a driving condition of the dehumidifier to adjust a circulation amount of refrigerant.

Generally, a dehumidifier is a device that adjusts the humidity of an indoor space by removing moisture contained in the air, and is manufactured using various dehumidifying methods.

In many cases, a cooling type dehumidifier in which moisture in the air is condensed when the air passes through the evaporator by using a refrigeration cycle, and the ambient heat is taken away to remove moisture in the air, is often used.

The dehumidifier includes a case having an outer shape, a fan installed inside the case to suck outside air, dehumidifying means for dehumidifying by condensing the moisture contained in the sucked air, moisture removed from the dehumidifying means And a water storage tank to store the water.

Wherein the dehumidifying means includes a compressor for compressing the gaseous refrigerant to a high pressure, a condenser for condensing the high-temperature and high-pressure refrigerant discharged from the compressor, and a low-temperature low-pressure refrigerant discharged from the condenser, And an evaporator which evaporates and evaporates to cool the surroundings.

The dehumidifier is operated such that the refrigerant output from the evaporator is circulated to the evaporator through the condenser and the capillary tube by the operation of the compressor. At this time, when the air is sucked into the dehumidifier by the rotation of the fan, the sucked air is momentarily cooled as it passes through the evaporator, and the moisture contained in the air is dewatered and adhered to the surface of the evaporator. When the moisture that has been removed is collected and formed into water droplets, the water droplets are dropped and stored in the water tank inside the dehumidifier.

On the other hand, the expansion valve is a necessary component in the dehumidifier, and serves to expand the refrigerant in the liquid state to finely divide the refrigerant so that heat exchange of the refrigerant can be well performed in the dehumidifier circuit.

Existing expansion valves used in refrigeration cycles are very diverse in structure and form. There are a manual expansion valve, a static pressure expansion valve, a thermostatic expansion valve, a capillary and an electronic expansion valve, among which an electronic expansion valve is widely adopted.

The electronic expansion valve controls the flow of the fluid by the needle moving up and down while using the rotation force of the pulse motor. It is not influenced by the change of the condensing pressure and precisely controls It is possible to increase the efficiency of the system. However, such an electronic expansion valve has a higher initial investment cost and somewhat less durability than other expansion valves.

For this reason, capillary tubes are used in small household appliances such as small household refrigerators and window type air conditioners.

The capillary expands by the pressure difference before and after the capillary. The pressure drop of the capillary is proportional to the length of the capillary and is inversely proportional to the diameter of the capillary.

However, since the capillary used in the conventional dehumidifier can not control the amount of refrigerant, the dehumidifying ability of the dehumidifier can not be controlled or controlled by the load. Therefore, there is a problem in that the dehumidifier can not be suitably dehumidified to the ambient temperature and the surrounding humidity.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2010-0011587 (published on Mar. 2, 2010).

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a dehumidifier, which can select one of a plurality of capillaries according to a driving condition of a dehumidifier, And to provide a driving device for the dehumidifier.

An apparatus for driving a dehumidifier according to an aspect of the present invention includes: a humidity sensor for sensing ambient humidity; A temperature sensor for sensing an ambient temperature; A plurality of capillaries installed at a front end of the evaporator; A capillary selection unit for selecting one or more of the plurality of capillaries to supply the refrigerant to the evaporator, and a control unit for determining the amount of refrigerant circulation according to the ambient humidity and the ambient temperature respectively input from the humidity sensor and the temperature sensor, And a control unit for controlling the capillary selecting unit based on the circulation amount.

In the present invention, the plurality of capillaries are different in length from each other.

The plurality of capillaries may include a first capillary, a second capillary having a shorter length than the first capillary, and a third capillary having a shorter length than the second capillary, And selects the third capillary when the load is in a high load and high load condition as compared to when the load is low.

In the present invention, the plurality of capillaries are different in diameter from each other.

In the present invention, the plurality of capillaries include a fourth capillary, a fifth capillary having a larger diameter than the fourth capillary, and a sixth capillary larger than the fifth capillary, The fourth capillary is selected in a low load and low load state and the sixth capillary is selected in a high load and high load state in which the load is lower than that in the low load state.

In the present invention, the capillary selecting unit may include a step valve disposed between the plurality of capillaries and the condenser.

The present invention is further characterized by a storage unit for storing a capillary path table representing the plurality of capillaries according to the ambient humidity and the ambient temperature.

In the present invention, the capillary path table further includes a circulation amount of refrigerant corresponding to the capillary path.

The driving device of the dehumidifier according to the present invention can detect the ambient temperature and the ambient humidity of the dehumidifier and then set a capillary path suitable for the amount of circulation of the refrigerant according to the driving conditions, thereby driving the dehumidifier with optimal dehumidification capacity per load.

Further, the driving device of the dehumidifier according to the present invention can prevent excessive freezing of the evaporator by adjusting the circulation amount of the refrigerant to an optimal state according to the load.

Also, the driving device of the dehumidifier according to the present invention can reduce the power consumption by efficiently driving the compressor by adjusting the circulation amount of the refrigerant to an optimal state according to the load.

1 is a schematic view for explaining a refrigeration system of a dehumidifier to which a driving device for a dehumidifier according to an embodiment of the present invention is applied.
FIG. 2 is a view illustrating a capillary tube having a different diameter in a driving device for a dehumidifier according to an embodiment of the present invention.
3 is a block diagram showing a driving device for a dehumidifier according to an embodiment of the present invention.
4 is a view illustrating a capillary path table of a driving device for a dehumidifier according to an embodiment of the present invention.

Hereinafter, a driving apparatus for a dehumidifier according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a schematic view for explaining a refrigeration system of a dehumidifier to which a driving device for a dehumidifier according to an embodiment of the present invention is applied. FIG. 2 is a schematic view illustrating a capillary having a different diameter in a driving device of a dehumidifier according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating a driving apparatus for a dehumidifier according to an embodiment of the present invention, and FIG. 4 is a view illustrating a capillary path table of a driving apparatus for a dehumidifier according to an embodiment of the present invention .

1, a refrigeration system of a dehumidifier to which a dehumidifier driving apparatus is applied includes a compressor 10, a condenser 12, an evaporator 14, a capillary selecting unit 50, and a capillary 70 .

The compressor 10 is evaporated in the evaporator 14 and compresses the heat exchanged refrigerant to a high pressure.

The condenser 12 heat-exchanges the refrigerant compressed at the high pressure in the compressor 10 and condenses to a low temperature.

The evaporator 14 heat-exchanges the expanded and decompressed refrigerant through an expansion device such as a capillary tube 70 or the like to vaporize it into a gaseous state.

The capillary selecting unit 50 selects a capillary path for supplying the refrigerant condensed in the condenser 12 to the evaporator 14. That is, any one or more of the first to third capillaries 72, 74, and 76 may be selected according to the refrigerant circulation amount to select the refrigerant path. At this time, the capillary selecting unit 50 may include a step valve and may be operated by receiving a control signal according to the refrigerant circulation amount to select a path of the capillary.

Here, the capillary tube 70 includes first to third capillaries 72, 74, and 76 having different lengths, and the amounts of the coolant flowing to the first to third capillaries 72, 74, and 76 may be different from each other.

For example, the second capillary tube 74 is shorter in length than the first capillary tube 72 and the third capillary tube 76 is shorter in length than the second capillary tube 74, so that when the amount of refrigerant circulation is small The refrigerant can be circulated through the first capillary tube 72 and the refrigerant can be circulated through the third capillary 76 when the refrigerant circulation amount is large.

On the other hand, as shown in FIG. 2, the diameter of the fourth to sixth capillaries 192, 194, and 196 may be differently configured so that the amounts of refrigerant circulated through the fourth to sixth capillaries 192, 194, and 196 may be different .

The fifth capillary tube 194 is larger in diameter than the fourth capillary tube 192 and the sixth capillary tube 196 is larger in diameter than the fifth capillary tube 194 so that the refrigerant circulation amount The refrigerant can be circulated through the fourth capillary tube 192 and the refrigerant circulated through the sixth capillary tube 196 when the refrigerant circulation amount is large.

Accordingly, the amount of refrigerant circulated can be adjusted by selecting the capillary tube 70 through the capillary selecting unit 50.

Thus, in this embodiment, the refrigeration system of the dehumidifier includes the compressor 10, the condenser 12, the capillary selecting unit 50, the capillary tube 70, and the evaporator 14. The compressor 10 compresses the gaseous refrigerant to a high pressure and the high temperature and high pressure refrigerant discharged from the compressor 10 is sent to the condenser 12. [ Next, in the condenser 12, the refrigerant of high temperature and high pressure is heat-exchanged and condensed into a low-temperature liquid. At this time, the capillary tube 70 expands the liquid refrigerant so that heat exchange can be performed well, and the capillary selecting unit 50 selects a capillary path suitable for the refrigerant circulation amount for each load to be supplied to the evaporator 14. The refrigerant discharged in the low-temperature and low-pressure liquid state is vaporized in the evaporator 14, and is heat-exchanged to cool the periphery of the refrigerant and discharge the refrigerant to the compressor 10 again. Therefore, the moisture in the air is condensed and dehumidified by the refrigeration system.

3, a driving apparatus for a dehumidifier according to an embodiment of the present invention includes a humidity sensor 20, a temperature sensor 22, a storage unit 30, a capillary selecting unit 50, .

The humidity sensor 20 senses the ambient humidity around the dehumidifier and transmits it to the controller 80.

The temperature sensor 22 senses the ambient temperature around the dehumidifier and transmits it to the controller 80.

The storage unit 30 stores a capillary path table representing the capillary 70 according to the ambient humidity and the ambient temperature. At this time, as shown in FIG. 4, the capillary path table also sets the amount of refrigerant circulating corresponding to the capillary tube 70 together with the path of the capillary 70 according to the ambient temperature and the ambient humidity. Here, the path of the capillary tube 70 and the refrigerant circulation amount may vary depending on the capacity of the dehumidifier, but are not limited thereto.

The capillary selecting unit 50 selects the capillary 70 path for supplying the refrigerant condensed in the condenser 12 to the evaporator 14. That is, at least one of the first to third capillaries 72, 74, and 76 having different lengths according to the refrigerant circulation amount is selected to select the refrigerant path. At this time, the capillary selecting unit 50 may include a step valve, and may be operated by receiving a control signal according to the refrigerant circulation amount to select the path of the capillary 70. [

The control unit 80 receives the ambient humidity and the ambient temperature around the dehumidifier from the humidity sensor 20 and the temperature sensor 22 and sets the refrigerant circulation amount based on the capillary route table stored in the storage unit 30, (50).

When the control unit 80 controls the capillary selecting unit 50 to cause the refrigerant to flow into the first capillary tube 72, the refrigerant absorbs more resistance than when the refrigerant flows to the second capillary 74 or the third capillary 76, The circulation amount is decreased and the expansion efficiency is lowered. Therefore, since the amount of evaporation through the capillary tube 70 and vaporized in the evaporator 14 is small, the cooling ability is reduced and the heat exchange is reduced. At this time, the controller 80 controls the capillary selecting unit 50 such that the refrigerant flows into the first capillary tube 72 when the ambient temperature and the ambient humidity around the dehumidifier are low and low.

For example, in the capillary path table shown in FIG. 4, when the ambient temperature is 20 ° C. or less and the ambient humidity is 40% to 50%, and the ambient temperature is 21 ° C. to 24 ° C. and the ambient humidity is 40 %, The capillary selecting unit 50 is controlled to control the refrigerant to flow into the first capillary tube 72 having the smallest amount of refrigerant circulation and the length of 120L.

On the other hand, when the controller 80 controls the capillary selecting unit 50 so that the refrigerant flows into the third capillary 76, the resistance is less than when the refrigerant flows to the first capillary 72 or the second capillary 74 The refrigerant circulation amount is increased and the expansion efficiency is increased. Therefore, since the amount of evaporation through the capillary tube 70 and vaporization in the evaporator 14 is high, the cooling ability is increased, and heat exchange occurs a lot. At this time, when the ambient temperature around the dehumidifier and the ambient humidity are in a high load and high load state, the controller 80 controls the capillary selecting unit 50 so that the refrigerant flows through the third capillary 76.

For example, in the capillary path table shown in FIG. 4, when the temperature is 25 ° C. to 28 ° C. and the humidity is 80% or the temperature is 29 ° C. to 32 ° C. and the humidity is 70% to 80% The capillary selecting unit 50 is controlled to control the refrigerant to flow through the third capillary 76 having the largest amount of refrigerant circulation and the length of 80L.

When the controller 80 controls the capillary selector 50 to flow the refrigerant into the second capillary tube 74, the refrigerant flows through the first capillary tube 72 and receives a larger resistance than the first capillary tube 72, . Therefore, since the amount of evaporation through the capillary tube 70 and vaporized in the evaporator 14 is small, the cooling ability is reduced and the heat exchange is reduced.

When the control unit 80 controls the capillary selecting unit 50 to flow the refrigerant into the second capillary tube 74, the resistance of the refrigerant is lower than that of the refrigerant flowing to the third capillary 76 and the refrigerant circulation amount increases, . Therefore, since the amount of evaporation through the capillary tube 70 and vaporization in the evaporator 14 is high, the cooling ability is increased, and heat exchange occurs a lot. At this time, when the ambient temperature and the ambient humidity around the dehumidifier are not in the low load state and the high load state, the control unit 80 controls the capillary selecting unit 50 such that the refrigerant flows into the second capillary tube 74.

For example, in the capillary path table shown in FIG. 4, when the temperature is 20 ° C or less and the humidity is 60% to 80%, the temperature is 21 ° C to 24 ° C and the humidity is 50% to 80% , The capillary selecting unit 50 is controlled so that the temperature is in the range of 25 to 28 DEG C and the humidity is in the range of 40 to 70% and the temperature is in the range of 29 to 32 DEG C and the humidity is in the range of 40 to 60% So that the refrigerant flows through the second capillary tube 74 having a length of 100L.

Although the process of controlling the circulation amount of the refrigerant based on the first to third capillaries 72, 74, and 76 having different lengths has been described in the present embodiment, the fourth to sixth capillaries 70, 192, 194, 196). At this time, the first capillary tube 72 and the fourth capillary tube 192, the second capillary tube 74 and the fifth capillary tube 194, the third capillary tube 76 and the sixth capillary tube 196 correspond to each other, A capillary path suitable for the refrigerant circulation amount can be set according to the ambient temperature.

As described above, according to the driving device for the dehumidifier according to the embodiment of the present invention, after the ambient temperature and the ambient humidity of the dehumidifier are sensed, a capillary path suitable for the refrigerant circulation amount per load is set according to the driving conditions, It is possible to drive the dehumidifier.

Further, the driving device of the dehumidifier according to the present invention can prevent excessive freezing of the evaporator by adjusting the circulation amount of the refrigerant to an optimal state according to the load.

Also, the driving device of the dehumidifier according to the present invention can reduce the power consumption by efficiently driving the compressor by adjusting the circulation amount of the refrigerant to an optimal state according to the load.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: compressor 12: condenser
14: Evaporator 20: Humidity sensor
22: temperature sensor 30:
50: capillary selecting unit 70: capillary
72,74,76: 1,2,3 capillary tube 192,194,196: 4,5,6 capillary tube
80:

Claims (8)

A humidity sensor for sensing ambient humidity;
A temperature sensor for sensing an ambient temperature;
A plurality of capillaries installed at a front end of the evaporator;
A capillary selection unit for selecting one or more of the plurality of capillaries to supply the refrigerant to the evaporator;
And a control unit for determining the refrigerant circulation amount in accordance with the ambient humidity and the ambient temperature respectively input from the humidity sensor and the temperature sensor and controlling the capillary selection unit based on the refrigerant circulation amount.
The method according to claim 1,
Wherein the plurality of capillaries have different lengths from each other.
3. The method of claim 2,
Wherein the plurality of capillaries comprises a first capillary, a second capillary having a shorter length than the first capillary, and a third capillary having a shorter length than the second capillary,
The control unit selects the first capillary when a low load and low load condition of a predetermined temperature and humidity interval is set and selects the third capillary when the load is in a high load and high load condition, And a control unit for controlling the operation of the dehumidifier.
The method according to claim 1,
Wherein the plurality of capillaries have diameters different from each other.
5. The method of claim 4,
Wherein the plurality of capillaries includes a fourth capillary, a fifth capillary having a larger diameter than the fourth capillary, and a sixth capillary larger than the fifth capillary,
The control unit selects the fourth capillary when the low temperature and low humidity low load condition of the preset temperature and humidity interval is selected and selects the sixth capillary when the high load and high temperature high load condition is higher than the low load condition And a control unit for controlling the operation of the dehumidifier.
The method according to claim 1,
Wherein the capillary selecting unit includes a step valve disposed between the plurality of capillaries and the condenser.
The method according to claim 1,
Further comprising a storage unit for storing a capillary path table indicating the plurality of capillaries according to the ambient humidity and the ambient temperature.
8. The method of claim 7,
Wherein the capillary path table further includes a refrigerant circulation amount corresponding to the capillary path.

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