TWI840486B - Dehumidification device - Google Patents

Abstract

The present invention comprises: a main body casing having an air inlet and an air outlet; a refrigeration cycle formed by sequentially connecting a compressor, a radiator, an expander, and a heat absorber; a blower; and a heat exchanger for exchanging heat between air flowing in a first heat exchange air path and air flowing in a second heat exchange air path. The main body casing is provided with: a dehumidification air path for blowing air sucked into the main body casing from the air inlet by the blower through the first heat exchange air path, the heat absorber, the second heat exchange air path, the radiator, and the blower to the outside of the main body casing from the air outlet; and a bypass air path for blowing air sucked into the main body casing from the air inlet by the blower through the blower to the outside of the main body casing from the air outlet.

Description

Dehumidification device

The present disclosure relates to a dehumidification device used in a living space or the like.

Conventional dehumidifiers include a heat pump device, a heat exchanger, and a blower in a main body casing having an air intake port and an air outlet.

The heat pump device is formed by a compressor, a radiator, an expander, and a heat absorber. In addition, the heat exchanger has a first air path and a second air path. The first air sucked into the main body casing from the air intake port flows in the first air path in the heat exchanger to become the second air, and the second air flows toward the air outlet and flows in the second air path in the heat exchanger, and the first air and the second air exchange heat.

Furthermore, conventional dehumidification devices dehumidify the air sucked in from the air inlet by the blower through the first air path of the heat exchanger, the heat absorber, the second air path of the heat exchanger, and the radiator, and blow the dehumidified air out from the air outlet through the blower (for example, refer to Patent Document 1). Prior Art Documents

Patent document Patent document 1: Japanese Patent Publication No. 2005-214533

Invention Problems to be Solved

Thus, in the conventional dehumidification device, dehumidification is performed by a dehumidification air path, and the dehumidification air path is to blow the air sucked into the main body casing from the air inlet through the first air path of the heat exchanger, the heat absorber, the second air path of the heat exchanger, the radiator, and the blower to the outside of the main body casing from the air outlet. This dehumidification air path is thus constituted as a relatively long continuous air path, so the pressure drop in the air path becomes larger. Therefore, there is a problem that the air volume of the air blown out from the air outlet becomes smaller.

Therefore, the present disclosure aims to provide a dehumidification device that can increase the air volume of air blown out from the air outlet. Means for solving the problem

Furthermore, the dehumidification device disclosed herein comprises: a main body casing having an air intake port and an air outlet port, a refrigeration cycle, an air blower, and a heat exchanger. The refrigeration cycle is formed by sequentially connecting a compressor, a radiator, an expander, and a heat absorber. The air blower blows the air outside the main body casing sucked in from the air intake port out of the main body casing from the air outlet port. The heat exchanger has a first heat exchange air path and a second heat exchange air path, and performs heat exchange between the air flowing in the first heat exchange air path and the air flowing in the second heat exchange air path. Furthermore, a dehumidification air path and a bypass air path are respectively formed in the main body casing. The dehumidification air path dehumidifies the air sucked into the main body casing from the air inlet by the blower through the first heat exchange air path of the heat exchanger, the heat absorber, the second heat exchange air path of the heat exchanger, and the radiator, and blows it out of the main body casing from the air outlet through the blower. The bypass air path blows the air sucked into the main body casing from the air inlet by the blower through the blower through the air outlet to the outside of the main body casing. Effect of the invention

According to the dehumidification device disclosed herein, since the pressure drop of the air blown out from the air outlet through the blower can be reduced by setting up a bypass air path, the air volume can be sufficiently increased.

The form used to implement the invention

The dehumidification device disclosed herein comprises: a main body casing having an air intake port and an air outlet port, a refrigeration cycle, an air blower, and a heat exchanger. The refrigeration cycle is formed by sequentially connecting a compressor, a radiator, an expander, and a heat absorber. The air blower blows the air outside the main body casing sucked in from the air intake port out of the main body casing from the air outlet port. The heat exchanger has a first heat exchange air passage and a second heat exchange air passage, and performs heat exchange between the air flowing in the first heat exchange air passage and the air flowing in the second heat exchange air passage. Furthermore, a dehumidification air passage and a bypass air passage are respectively formed in the main body casing. The dehumidification air passage dehumidifies the air sucked into the main body casing from the air inlet by the blower through the first heat exchange air passage of the heat exchanger, the heat absorber, the second heat exchange air passage of the heat exchanger, and the radiator, and blows the air out of the main body casing from the air outlet by the blower. The bypass air passage blows the air sucked into the main body casing from the air inlet by the blower through the blower through the air outlet to the outside of the main body casing.

Thus, the dehumidifier can reduce the pressure drop of the air path through which the air is blown out from the air outlet by the blower, so the air volume can be increased sufficiently. Thus, for example, the clothes drying performance can be improved.

Furthermore, the bypass air passage may be formed to pass between the radiator and the blower. In this way, since the air sucked into the main body casing from the air inlet by the blower can be blown out of the main body casing from the air outlet through the bypass air passage without passing through the dehumidification air passage, the pressure drop of the bypass air passage is reduced. As a result, the air volume blown out from the air outlet can be sufficiently ensured. Thus, for example, the clothes drying performance can be improved.

Furthermore, the dehumidifier can also be configured as follows: a switch device that can open and close the bypass air passage is provided between the air intake port and the blower. In this way, since the balance of the air volume in the dehumidification air passage can be adjusted by opening and closing the switch device, the air volume blown out of the main body housing can be adjusted. As a result, the clothes drying performance corresponding to the purpose can be ensured.

Furthermore, the switch device can also be arranged in the bypass air passage between the radiator and the blower. Thus, since the air volume of the bypass air passage can be ensured without reducing the air volume passing through the dehumidification air passage, the clothes drying performance can be improved without reducing the dehumidification capacity.

Furthermore, the switch device may also be configured as follows: a switch plate that rotates in the elevation direction, the switch plate being disposed above the top surface of the specific heat exchanger, and when the switch plate is opened, the switch plate separates the dehumidification air path from the bypass air path. Thus, since the switch plate rectifies the flow of air in the dehumidification air path, the pressure drop in the dehumidification air path can be reduced, and the total air volume of the dehumidification air path and the bypass air path can be increased. Thus, the clothes drying performance can be improved.

In addition, the dehumidifier can also be made into the following structure: further equipped with: a temperature measuring unit, which is provided in the main body casing and measures the temperature outside the main body casing; and a control unit, which controls the opening and closing of the switch device according to the measured temperature of the temperature measuring unit, and the control unit controls to open the switch device when the measured temperature is higher than a predetermined temperature. Thereby, by setting the predetermined temperature in advance to open the bypass air passage when the heat absorption of the heat absorber becomes excessive, the temperature of the heat absorber is prevented from rising, and as a result, the dehumidification performance can be improved.

The following is an explanation of the implementation form of the present disclosure with reference to the drawings. (Implementation form 1)

FIG1 is an external view of a dehumidification device 100 according to Embodiment 1, and FIG2 is a schematic cross-sectional view showing the A-A cross section in FIG1.

In addition, for the sake of convenience, the following paragraphs are described below.

That is, the vertical direction in the state where the dehumidifier 100 is installed as shown in Fig. 1 may be described as the up-down direction. Similarly, the upper surface of the dehumidifier 100 in the state where the dehumidifier 100 is installed as shown in Fig. 1 may be described as the "top surface".

As shown in FIG. 1 and FIG. 2 , the main body casing 1 of the dehumidifier 100 is substantially box-shaped, has an air intake port 2 on the back side of the main body casing 1 , and has an air outlet 3 on the front side of the top surface of the main body casing 1 .

As shown in FIG. 2 , the dehumidifier 100 includes a heat exchanger 4, a blower 5, a compressor 6, a radiator 7, a capillary tube as an expander 8, and a heat absorber 9 in a main casing 1.

A refrigeration cycle is formed by sequentially connecting the compressor 6, the radiator 7, the expander 8 (capillary tube), and the heat absorber 9, that is, connecting them with the refrigerant pipe 10. Since the dehumidification method using the refrigeration cycle is known, it will not be described in detail here, but the heat absorber 9 is a component that cools and dehumidifies the air that becomes the dehumidification object. The radiator 7 and the heat absorber 9 are arranged facing each other. The radiator 7 is arranged on the front side of the main body casing 1, and the heat absorber 9 is arranged on the back side of the main body casing 1.

FIG3 is a schematic diagram showing the structure of the heat exchanger 4. As shown in FIG3, the heat exchanger 4 is constructed by alternately stacking the heat transfer plates A11 and the heat transfer plates B12, and each heat transfer plate is provided with a rib 13 to form an air path when stacked. Thus, the heat exchanger 4 has: a first heat exchange air path 14 in which air flows in a vertical direction, and a second heat exchange air path 15 in which air flows in a horizontal direction, and the air flowing in the first heat exchange air path 14 and the air flowing in the second heat exchange air path 15 are heat exchanged through each heat transfer plate. The shape of the surface of each heat transfer plate provided with the rib 13 is a trapezoid, and the heat exchanger 4 is in a state where each heat transfer plate has been stacked, and as shown in FIG2 , it becomes a three-dimensional shape with the lower surface inclined like a rectangular parallelepiped cut obliquely. The heat exchanger 4 is located between the radiator 7 and the heat absorber 9, and is provided in the air path from the heat absorber 9 to the radiator 7. In addition, the inlet in the first heat exchange air path 14 of the heat exchanger 4, i.e., the first heat exchange suction port 14a, is a horizontally long quadrilateral shape with the left and right directions of the main body casing 1 as its long side direction.

The blower 5 is formed by a spiral sleeve portion 16, a motor portion 17 fixed to the sleeve portion 16, and a blade portion 18 rotated by the motor portion 17. The sleeve portion 16 has an inlet 19 and an outlet 20. The inlet 19 faces the radiator 7. The heat absorber 9, the second heat exchange air passage 15 of the heat exchanger 4, the radiator 7, and the inlet 19 of the blower 5 are arranged in a straight line in the horizontal direction. In other words, the heat absorber 9, the second heat exchange air passage 15 of the heat exchanger 4, the radiator 7, and the inlet 19 of the blower 5 are components having air passages in a straight line.

Here, the dehumidification air passage 21 formed in the main body casing 1 of the dehumidification device 100 will be described.

As shown by the white arrows in FIG. 2 (hereinafter referred to as "arrows"), the air sucked into the main body casing 1 from the air inlet 2 by the blower 5 flows into the first heat exchange air passage 14 of the heat exchanger 4. Then, after pre-cooling by heat exchange with the air cooled and dehumidified by the heat absorber 9, the air passes below the lower end of the heat absorber 9, and then reverses the wind direction and passes through the heat absorber 9 to be cooled and dehumidified.

In addition, although the lower end of the heat absorber 9 and the upper end of the bottom surface of the heat exchanger 4 are set at the same height in FIG. 2 , the height of the heat absorber 9 may be set higher to form a portion that protrudes downwards further than the upper end of the bottom surface of the heat exchanger 4. In this case, the air that has flowed into the first heat exchange air passage 14 of the heat exchanger 4 exchanges heat with the air that has been cooled and dehumidified by the heat absorber 9 and is pre-cooled, and then passes through the lower air passage. That is, the air not only passes below the lower end of the heat absorber 9, but also passes through the portion of the heat absorber 9 that protrudes downwards further than the bottom surface of the heat exchanger 4, and then reverses the wind direction and further passes through the remaining portion of the heat absorber 9 to be cooled and dehumidified.

The cooled and dehumidified air flows into the second heat exchange air passage 15 of the heat exchanger 4 and is heated by the air sucked from the air inlet 2, and further heated by the radiator 7, and then blown from the air outlet 3 to the outside of the main body casing 1 by the blower 5. The air passage described above becomes the dehumidification air passage 21 for dehumidification.

The dehumidifier 100 is provided with a water receiving portion 23 below the heat exchanger 4 and the heat absorber 9 in the main body casing 1. The water receiving portion 23 is a component for receiving condensed water generated and dripping in the first heat exchange air passage 14 of the heat exchanger 4 and the heat absorber 9. That is, when the air flowing in from the air intake port 2 is precooled in the heat exchanger 4, there is a situation where water condenses in the first heat exchange air passage 14 and becomes water droplets and drips. Therefore, the dehumidifier 100 is a structure in which the water receiving portion 23 serving as the dehumidification air passage 21 is arranged below the heat exchanger 4 to receive condensed water.

Furthermore, the dehumidifier 100 has a water tank 25 for storing condensed water at the lower part of the water receiving part 23 in the main housing 1. A drain hole 26 is provided in the water receiving part 23 to guide the accumulated condensed water to the water tank 25. The accumulated condensed water is recovered to the water tank 25 through the drain hole 26.

Furthermore, the dehumidifier 100 is provided with a heat absorber cover 24 on the side of the heat absorber 9 opposite to the heat exchanger 4 (on the side of the air inlet 2 of the main body casing 1 in FIG. 2 ), and above the water receiving portion 23. The water receiving portion 23 and the heat absorber cover 24 are components constituting a part of the dehumidification air passage 21, and are components constituting the air passage formed between the first heat exchange air passage 14 of the heat exchanger 4 and the heat absorber 9 in the dehumidification air passage 21.

Here, in addition to the dehumidification air path 21, a bypass air path 22 is formed in the main body casing 1 of the dehumidification device 100. As described above, the dehumidification air path 21 is a kind of air path through which the air sucked into the main body casing 1 from the air inlet 2 by the blower 5 can pass through the first heat exchange air path 14 of the heat exchanger 4, the heat absorber 9, the second heat exchange air path 15 of the heat exchanger 4, the radiator 7, and the blower 5 to be blown out of the main body casing 1 from the air outlet 3. As shown in FIG. 2, the bypass air path 22 is a kind of air path through which the air sucked into the main body casing 1 from the air inlet 2 by the blower 5 can pass through the blower 5 to be blown out of the main body casing 1 from the air outlet 3.

In addition, the air sucked into the main body casing 1 from the air inlet 2 by the blower 5 flows separately in the dehumidification air path 21 and the bypass air path 22. That is, from the air inlet 2 to the separation in the main body casing 1, the dehumidification air path 21 and the bypass air path 22 are the same air path. In addition, the dehumidification air path 21 merges with the bypass air path 22 after passing through the first heat exchange air path 14 of the heat exchanger 4, the heat absorber 9, the second heat exchange air path 15 of the heat exchanger 4, and the radiator 7, and becomes the same air path again. The air flowing in each of the dehumidification air path 21 and the bypass air path is blown out of the main body casing 1 from the air outlet 3 through the blower 5.

Thereby, since the pressure drop of the air path blown out from the air outlet 3 through the blower 5 (i.e., the air path from the separation into the dehumidification air path 21 and the bypass air path 22 in the main body shell 1 to the merging of the dehumidification air path 21 and the bypass air path 22) is reduced, the air volume can be sufficiently increased, thereby improving the clothing drying performance.

As shown in FIG. 2 , the bypass air passage 22 is formed to pass between the radiator 7 and the blower 5 .

In conventional dehumidification devices, it is quite common that all the air sucked into the main body casing 1 from the air inlet 2 by the blower 5 passes through the dehumidification air passage 21 formed by the heat exchanger 4, the heat absorber 9, the heat exchanger 4, and the radiator 7 and is blown out from the air outlet 3 to the outside of the main body casing 1. Since the air sucked into the main body casing 1 generates a pressure drop due to passing through the dehumidification air passage 21, the air volume of the air blown out of the main body casing 1 is reduced. Therefore, by providing a bypass air passage 22 passing through the radiator 7 and the blower 5, a part of the air sucked into the main body casing 1 from the air inlet 2 can be blown out from the air outlet 3 to the outside of the main body casing 1 through the bypass air passage 22 instead of passing through the dehumidification air passage 21. The pressure drop in the bypass air passage 22 is relatively small. As a result, since the air volume of the air blown out from the air outlet 3 can be sufficiently ensured, the clothes drying performance can be improved.

2 and 4 , the dehumidification device 100 is provided with a switch device 27 that can open and close the bypass air passage 22 between the air intake port 2 and the blower 5 .

In Fig. 2, the state in which the switch device 27 is turned on is shown, and in Fig. 4, the state in which the switch device 27 is turned off is shown. When the switch device 27 is turned off, the bypass air path 22 is closed, and the air sucked from the air intake port 2 only passes through the dehumidification air path 21.

As shown in Fig. 2 and Fig. 4, the dehumidifier 100 can optimize the air volume of the air blown out from the air outlet 3 by providing a switch device 27 and adjusting its switch state to adjust the balance between the air volume of the dehumidification air passage 21 and the air volume of the bypass air passage 22. As a result, the clothes drying performance corresponding to the application can be ensured.

2 and 4 , the switch device 27 is disposed in the bypass air passage 22 between the radiator 7 and the blower 5 .

By arranging the switch device 27 between the radiator 7 and the blower 5, even when the switch device 27 is turned on, the air volume of the dehumidification air passage 21 will not decrease, and the air volume of the bypass air passage 22 can be sufficiently ensured. As a result, the clothes drying performance can be improved without reducing the dehumidification capacity.

Furthermore, the switch device 27 has a switch plate 27a that rotates in the elevation direction, and the switch plate 27a is arranged above the top surface of the heat exchanger 4 (the top surface of the radiator 7). The switch plate 27a is rotated by a driving part (not shown) around a rotating shaft 27b arranged above the heat exchanger 4 (the top surface of the radiator 7). The rotating shaft 27b is arranged parallel to the long side of the first heat exchange suction port 14a of the heat exchanger 4. As shown in FIG. 4, when the switch plate 27a is closed, the upper end of the heat exchanger 4 (heat exchanger 7) and the blower 5 are closed.

As shown in FIG. 2 , when the switch plate 27a is opened, the switch plate 27a is formed to separate the dehumidification air path 21 and the bypass air path 22. When the switch plate 27a is opened, the surface of the switch plate 27a extends in the up-down direction and faces the air inlet 2. Thus, when the switch plate 27a is opened, a part of the air sucked from the air inlet 2 flows along the surface of the switch plate 27a and flows into the heat exchanger 4. Thus, since the switch plate 27a rectifies the flow of air in the dehumidification air path 21, the pressure drop in the dehumidification air path 21 is reduced. As a result, since the total air volume of the dehumidification air path 21 and the bypass air path 22 can be increased, the clothes drying performance can be improved.

As shown in FIG. 2 , the dehumidifier 100 has a main body casing wall surface 30 extending in the vertical direction between the radiator 7 and the blower 5 in the bypass air passage 22. The surface of the main body casing wall surface 30 is arranged to face the air inlet 2. The switch plate 27a of the switch device 27 is opened in the elevation direction to be parallel to the main body casing wall surface 30. When the switch device 27 is opened, the air passing through the bypass air passage 22 does not pass through the radiator 7, but passes along the main body casing wall surface 30. Since the pressure drop is reduced by making the air flow along the main body casing wall surface 30, the air volume of the bypass air passage 22 can be increased. As a result, since the air volume blown out of the main body casing 1 can be sufficiently ensured, the clothes drying performance can be improved.

In addition, the dehumidifying device 100 includes: a temperature measuring unit 28, which is provided in the main body housing 1 and measures the temperature outside the main body housing 1; and a control unit 29, which controls the switch device 27 according to the measured temperature of the temperature measuring unit 28. The control unit 29 controls to open the switch device 27 when the measured temperature measured by the temperature measuring unit 28 is higher than a predetermined temperature set in advance. In addition, the control unit 29 is realized by, for example, a computer system having a processor and a memory. That is, by the processor executing the program stored in the memory, the computer system functions as the control unit 29. Although the program executed by the processor is pre-stored in the memory of the computer system in this embodiment, it can also be provided by storing it in a storage medium such as a memory card, or by providing it through a telecommunications line such as a network.

When the temperature outside the main body casing 1 rises, the moisture content of the air flowing into the main body casing 1 from the air inlet 2 increases, which promotes the evaporation of the refrigerant in the heat absorber 9 and increases the vaporization area. As a result, the air that is not fully cooled passes through the heat exchanger 4. By opening the switch device 27 to release the bypass air path 22, the air volume of the heat absorber 9 in the dehumidification air path 21 can be reduced to prevent the temperature of the heat absorber 9 from rising beyond the required level. As a result, since the heat exchanger 4 can be fully cooled, the dehumidification performance can be improved.

In addition, although the dehumidifier 100 of embodiment 1 is described as a device having a switch device 27, the switch device of the dehumidifier of the present disclosure is not a necessary component of the dehumidifier of the present disclosure, and the switch device may not be provided. Even in this case, the air volume blown out from the air outlet 3 can be fully ensured, similar to the case where the switch device 27 of the dehumidifier 100 of the present embodiment is turned on, thereby improving the drying performance of clothes. Industrial applicability

The dehumidification device disclosed herein is useful as a dehumidification device for use in home spaces, etc., because it can improve dehumidification performance.

1: Body cover 2: Air intake 3: Air outlet 4: Heat exchanger 5: Blower 6: Compressor 7: Radiator 8: Expander 9: Heat absorber 10: Refrigerant pipe 11: Heat transfer plate A 12: Heat transfer plate B 13: Rib 14: 1st heat exchange air passage 14a: 1st heat exchange intake 15: 2nd heat exchange air passage 16: Casing 17: Motor part 18: Blade part 19: Inlet 20: Outlet 21: Dehumidification air passage 22: Bypass air passage 23: Water receiving part 24: Heat absorber cover 25: Water tank 26: Drain hole 27: Switch device 27a: Switch plate 27b: Rotating shaft 28: Temperature measurement part 29: Control part 30: Main casing wall 100: Dehumidification device

FIG. 1 is an external view of a dehumidification device according to embodiment 1 of the present disclosure.

Fig. 2 is a schematic cross-sectional view of the A-A section shown in Fig. 1 of the dehumidifier, showing a state in which the switch device is turned on.

FIG. 3 is a schematic diagram showing the structure of a heat exchanger of the dehumidification device.

Fig. 4 is a schematic cross-sectional view showing the A-A section of the dehumidifier in a state where the switch device is closed.

1: Main body cover

2: Air intake

3: Air outlet

4: Heat exchanger

5: Blower

6: Compressor

7: Radiator

8: Expander

9: Heat absorber

10: Refrigerant piping

14a: No. 1 heat exchange suction port

16: Casing part

17: Motor Department

18: Leaf blade

19: Inlet

20: Spit out

21: Dehumidification air path

22: Bypass air passage

23: Water receiving part

24: Heat absorber cover

25: Sink

26: Drainage hole

27: Switching device

27a: Switch board

27b: Rotating shaft

28: Temperature measurement department

29: Control Department

30: Main body shell wall

100: Dehumidification device

Claims (2)

A dehumidifier is provided, which comprises: a main body casing having an air inlet and an air outlet; a refrigeration cycle formed by sequentially connecting a compressor, a radiator, an expander, and a heat absorber; a blower for blowing air sucked from the air inlet to the outside of the main body casing out of the air outlet; a heat exchanger having a first heat exchange air path and a second heat exchange air path, and exchanging the air flowing in the first heat exchange air path with the air flow; The air moving in the second heat exchange air path is heat exchanged; the dehumidification air path is used to dehumidify the air sucked into the main body casing from the air inlet by the blower through the first heat exchange air path before the heat exchanger, the heat absorber, the second heat exchange air path before the heat exchanger, and the radiator, and is blown out of the main body casing from the air outlet by the blower; and the bypass air path is used to blow the air sucked from the air inlet by the blower The air sucked into the main body casing by the suction port is blown out of the main body casing from the air blowing port only through the blower. The bypass air passage is formed to pass between the radiator and the blower. The dehumidification device is equipped with: a switch device that can open and close the bypass air passage between the air suction port and the blower. The switch device is arranged in the bypass air passage between the radiator and the blower. The switch device has The switch plate rotates in the elevation direction, the switch plate is arranged above the top surface of the heat exchanger, and when the switch plate is opened, the switch plate separates the dehumidification air path and the bypass air path. When the switch plate is opened, the surface of the switch plate extends in the up-down direction and faces the air intake port, and a part of the air sucked from the air intake port flows along the surface of the switch plate and flows into the heat exchanger. A dehumidification device as claimed in claim 1, wherein the dehumidification device is further equipped with: a temperature measuring unit, which is disposed in the main body casing and measures the temperature outside the main body casing; and a control unit, which controls the opening and closing of the switch device according to the measured temperature of the temperature measuring unit, and the control unit is controlled to open the switch device when the measured temperature is above a predetermined temperature.

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