Dehumidification device and dehumidification system

Abstract

The utility model discloses a dehumidification device and a dehumidification system, and the dehumidification device comprises a first housing which is provided with an air inlet port and an air supply port; the refrigerant flow path comprises a compressor and a heat exchange unit which are connected with each other; the heat exchange unit comprises a first heat exchanger and a second heat exchanger which are arranged at an interval, and the first heat exchanger and the second heat exchanger are located on the upstream side of the air supply opening; and the heat exchange channel is used for enabling air to flow between the first heat exchanger and the second heat exchanger. According to the dehumidification device, air flows through the channel between the first heat exchanger and the second heat exchanger twice and then is sent out through the air supply opening, the number of times of heat exchange is increased, the dehumidification amount is effectively increased, and the dehumidification effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification and ventilation equipment, in particular to a dehumidification device and a dehumidification system. Background Art

[0002] The existing heat pump technology pressurizes the refrigerant through the compressor, making the refrigerant become high-temperature and high-pressure gas, which then enters the condenser, where it condenses and liquefies to release heat. The liquefied refrigerant passes through a throttling device or capillary throttling to reduce pressure, then enters the evaporator, where it evaporates and gasifies to absorb heat, and finally returns to the compressor to become low-temperature and low-pressure gas. By passing the air through the evaporator, condensation and dehumidification are achieved.

[0003] When the dehumidification capacity needs to be increased, the method of increasing the compressor capacity or increasing the air volume is usually adopted, and the optimal method of increasing the dehumidification capacity is found in the matching of the compressor capacity and the corresponding air volume. However, when the product height or the size of the ceiling air duct is limited, the dehumidification capacity cannot be increased by increasing the compressor capacity or increasing the air volume. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a dehumidification device and a dehumidification system, which increase the number of heat exchanges by setting a heat exchange channel, thereby effectively increasing the dehumidification capacity and improving the dehumidification effect.

[0005] The first aspect of the utility model provides a dehumidification device, comprising:

[0006] The first shell is provided with an air inlet and an air supply outlet;

[0007] A refrigerant flow path, including a connected compressor and a heat exchange unit;

[0008] The heat exchange unit comprises: a first heat exchanger and a second heat exchanger which are arranged at intervals, wherein the first heat exchanger and the second heat exchanger are located at the upstream side of the air supply outlet;

[0009] The heat exchange channel is used to allow air to flow between the first heat exchanger and the second heat exchanger.

[0010] In some optional embodiments, the first shell is also provided with a return air outlet; the dehumidification device also includes a heat exchange unit, which is arranged in the first shell; the air flowing from the air inlet to the air supply outlet flows through the heat exchange channel, and / or the air flowing from the return air outlet to the air supply outlet flows through the heat exchange channel.

[0011] In some optional embodiments, the heat exchange channel includes: a first heat exchange channel, arranged between the first heat exchanger and the second heat exchanger, and provided with a first air outlet and a second air outlet; a second heat exchange channel, connected to the second air outlet, and located on a side of the first heat exchanger away from the second heat exchanger.

[0012] In some optional embodiments, the first heat exchange channel further includes a third air outlet; the air flowing through the first heat exchange channel flows through the second heat exchange channel and then flows from the third air outlet to the first heat exchanger.

[0013] In some optional embodiments, it also includes: a dehumidification air path; on the dehumidification air path, air flows through the first heat exchange channel, the second heat exchange channel, and the first heat exchanger in sequence, and then flows through the first heat exchange channel to the second heat exchanger.

[0014] In some optional embodiments, the dehumidification air path includes: a first dehumidification air path, in which the air flows through the first heat exchange channel and the second heat exchange channel and then flows to the upstream side of the first heat exchanger; and a second dehumidification air path, in which the air flows through the first heat exchanger and the first heat exchange channel and then flows to the second heat exchanger.

[0015] In some optional embodiments, an air supply path and an air exhaust path are formed in the first shell, the air supply path is provided with the air inlet at one end and the air supply outlet at the other end, the air exhaust path is provided with the return air outlet at one end and the air exhaust outlet at the other end; the heat exchange unit is provided at the intersection area of ​​the air supply path and the exhaust path.

[0016] In some optional embodiments, the heat exchange unit is disposed in the air supply passage and is located on the downstream side of the heat exchange unit.

[0017] A second aspect of the utility model provides a dehumidification system, comprising:

[0018] The above-mentioned dehumidification device;

[0019] an outdoor unit connected to the dehumidification device;

[0020] The outdoor unit includes a second shell, a heat dissipation unit, and a third heat exchanger. The heat dissipation unit and the third heat exchanger are disposed in the second shell, and the third heat exchanger is disposed on the refrigerant flow path.

[0021] In some optional embodiments, the dehumidification device also includes a humidification part; the first shell of the dehumidification device includes a first heat exchange shell and a first humidification shell that are interconnected; the heat exchange unit is arranged in the first heat exchange shell, and the first heat exchanger and the second heat exchanger of the heat exchange unit and the humidification part are arranged in the first humidification shell.

[0022] In some optional embodiments, the first heat exchange shell is provided with a first transition air supply port, the first humidification shell is provided with a second transition air supply port, and the first transition air supply port and the second transition air supply port are connected through a pipeline.

[0023] In some optional embodiments, the air inlet is arranged in the first heat exchange shell, and the air supply outlet is arranged in the first humidification shell.

[0024] In some optional embodiments, the refrigerant flow path further includes: a first branch where the second heat exchanger is located and a second branch where the third heat exchanger is located, and the first branch and the second branch are arranged in parallel.

[0025] In some optional embodiments, the refrigerant flow path further includes: a main path where the first heat exchanger is located; and a flow control valve is provided on the main path. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of air flow in the first dehumidification mode of the dehumidification device of the first embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of air flow in the second dehumidification mode of the dehumidification device of the first embodiment of the utility model;

[0028] Figure 3 A schematic diagram of air flow in a heat exchange mode of a dehumidification device according to a first embodiment of the utility model;

[0029] Figure 4 A schematic diagram of air flow in the internal circulation mode of the dehumidification device of the first embodiment of the utility model;

[0030] Figure 5 A schematic diagram of air flow in the mixed air mode of the dehumidification device of the first embodiment of the utility model;

[0031] Figure 6 A schematic diagram of air flow in a first dehumidification mode of a dehumidification system according to a second embodiment of the utility model;

[0032] Figure 7 A schematic diagram of air flow in a second dehumidification mode of a dehumidification system according to a second embodiment of the utility model;

[0033] Figure 8 A schematic diagram of air flow in a first dehumidification mode of a dehumidification system according to a third embodiment of the utility model;

[0034] Fig. 9 A schematic diagram of air flow in the second dehumidification mode of the dehumidification system according to the third embodiment of the utility model;

[0035] Fig.10 A schematic diagram of a refrigerant flow path of a dehumidification system according to a first embodiment of the utility model;

[0036] Fig.11 It is a schematic diagram of the refrigerant flow path of the dehumidification system of the second embodiment and the third embodiment of the utility model.

[0037] Reference numerals:

[0038] Dehumidification device 100, first shell 11, first heat exchange shell 111, first humidification shell 112, air inlet 110, air supply vent 120, return air vent 130, exhaust vent 140, first transition air supply vent 150, second transition air supply vent 160, heat exchange unit 12, heat exchange channel 13, first heat exchange channel 131, first air vent 1311, second air vent 1312, third air vent 1313, fourth air vent 1314, second heat exchange channel 132, air supply fan 14, exhaust fan 15, first air valve 16, second air valve 17, humidification part 18, outdoor unit 200, second shell 21, heat dissipation unit 22, first heat exchanger 31, second heat exchanger 32, third heat exchanger 33, compressor 34, flow control valve 35, first dehumidification air path 41, second dehumidification air path 42. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0040] The following orientation or positional relationship is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present disclosure. Specifically, relative to the above, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0042] The utility model provides a dehumidification device 100. Figures 1 to 5 The dehumidification device 100 of the present invention will be described in detail.

[0043] Figure 1 A schematic diagram of air flow in the first dehumidification mode of the dehumidification device of the first embodiment of the utility model; Figure 2 It is a schematic diagram of air flow in the second dehumidification mode of the dehumidification device of the first embodiment of the utility model; Figure 3 A schematic diagram of air flow in a heat exchange mode of a dehumidification device according to a first embodiment of the utility model; Figure 4 A schematic diagram of air flow in the internal circulation mode of the dehumidification device of the first embodiment of the utility model; Figure 5 A schematic diagram of air flow in the mixed air mode of the dehumidification device of the first embodiment of the utility model; Fig.10 It is a schematic diagram of the refrigerant flow path of the dehumidification system of the first embodiment of the utility model. Figures 1 to 5 In the figure, the areas enclosed by the two dotted boxes are the first heat exchange channel and the second heat exchange channel respectively.

[0044] First embodiment

[0045] The dehumidification device 100 of this embodiment can be a device that discharges the air sucked from the first space to the second space, and heats the air sucked from the second space before discharging it from the first space, such as a fresh air dehumidification device or a dehumidification total heat exchange device installed indoors.

[0046] like Figures 1 to 5 As shown, the dehumidifier 100 provided by the utility model includes a first shell 11, a heat exchange unit 12 and a refrigerant flow path. The dehumidifier 100 is arranged in the first space, including an air supply path, an exhaust path, a heat exchange unit 12, a dehumidification path and a refrigerant flow path, and the refrigerant flow path includes a compressor 34 and a heat exchange unit connected. The air supply path and the exhaust path intersect, and the two ends of the air supply path have an air inlet 110 and an air supply vent 120, and the two ends of the exhaust path have a return air vent 130 and an exhaust vent 140. The heat exchange unit 12 is arranged at the intersection area of ​​the air supply path and the exhaust path.

[0047] The first space and the second space are two different spaces. In this embodiment, the first space is indoors, and the second space is outdoors. The dehumidification device 100 is located in the first space. In other embodiments, the first space and the second space may also be two independent spaces, such as two independent rooms.

[0048] The first housing 11 has a first side and a second side opposite to each other. An air inlet 110 and an air outlet 140 are provided on the first side of the first housing 11, and a return air outlet 130 and an air supply air outlet 120 are provided on the second side of the first housing 11. The air inlet 110 and the air outlet 140 are connected to the outside through pipes respectively. In this embodiment, the air inlet 110 and the air supply air outlet 120 are arranged approximately diagonally, and the return air outlet 130 and the air outlet 140 are arranged approximately diagonally. In other embodiments, the air inlet 110 and the air supply air outlet 120 are arranged oppositely. An air supply air path and an air exhaust air path are formed in the first housing 11. The two ends of the air supply air path are the air inlet 110 and the air supply air outlet 120 respectively, and the two ends of the exhaust air path are the return air outlet 130 and the air exhaust air outlet 140 respectively.

[0049] The heat exchange unit 12 is located at the intersection of the air supply path and the exhaust path, and the heat exchange unit 12 is composed of a plurality of thin plates glued together. For example, the heat exchange unit 12 can be a full heat exchange core. The heat exchange unit 12 can be in the shape of a square body, a hexagon, etc. In the present embodiment, the heat exchange unit 12 is a hexagon, and the heat exchange unit 12 has a first surface and a second surface relative to each other and a third surface and a fourth surface relative to each other. At least a portion of the first surface is arranged opposite to the air inlet 110, at least a portion of the second surface is arranged opposite to the air supply vent 120, at least a portion of the third surface is arranged opposite to the return air vent 130, and at least a portion of the fourth surface is arranged opposite to the exhaust vent 140. Air filters can be arranged on the upstream side of the four surfaces of the heat exchange unit 12 to purify the air passing through the air supply path and / or the exhaust path.

[0050] A first air valve 16 and a second air valve 17 for switching air paths are further disposed in the first housing 11 .

[0051] When the first air valve 16 is opened, the air entering from the air inlet 110 can enter the upstream side of the air outlet 140, so that the air inlet 110 is connected with the air outlet 140. When the second air valve 17 is opened, the air entering from the return air outlet 130 can enter the upstream side of the air supply outlet 120, so that the return air outlet 130 is connected with the air supply outlet 120.

[0052] The first housing 11 is further provided with an air supply fan 14 and an exhaust fan 15. In this embodiment, the air supply fan 14 is provided near the air supply vent 120 and is located at the upstream side of the air supply vent 120; in other embodiments, the air supply fan 14 may be provided near the air inlet 110. In this embodiment, the exhaust fan 15 is provided near the exhaust vent 140 and is located at the upstream side of the exhaust vent 140; in other embodiments, the exhaust fan 15 may be provided near the return air vent 130. The air supply fan 14 and the exhaust fan 15 are preferably variable frequency fans with adjustable speed.

[0053] The heat exchange unit includes a first heat exchanger 31 and a second heat exchanger 32 which are arranged at intervals, and the first heat exchanger 31 and the second heat exchanger 32 are located at the upstream side of the air supply outlet 120. The first heat exchanger 31 and the second heat exchanger 32 are arranged at the downstream side of the heat exchange unit 12 and are arranged at the upstream side of the air supply fan 14. That is, after the air passes through the heat exchange unit 12, it enters the heat exchange unit and then flows through the air supply fan 14, and is discharged from the air supply outlet 120. In other embodiments, the heat exchange unit can also be arranged at the downstream side of the air supply fan 14.

[0054] The first heat exchanger 31 and the second heat exchanger 32 are provided with a heat exchange channel 13, and the heat exchange channel 13 allows air to flow through the channel between the first heat exchanger 31 and the second heat exchanger 32. The air flowing from the air inlet 110 to the air supply outlet 120 can flow through the heat exchange channel 13 and then flow to the air supply outlet 120. The air flowing from the return air outlet 130 to the air supply outlet 120 can flow through the heat exchange channel 13 and then flow to the air supply outlet 120. The heat exchange channel 13 includes a first heat exchange channel 131 and a second heat exchange channel 132.

[0055] The first heat exchange channel 131 is arranged between the first heat exchanger 31 and the second heat exchanger 32. In this embodiment, air outlets are arranged around the first heat exchange channel 131, that is, air can enter and exit the first heat exchange channel 131 in the vertical direction, and there are first and second air outlets 1311 and 1312 opposite to each other in the vertical direction. The first air outlet 1311 is close to the downstream side of the heat exchange unit 12, and the air can flow through the first and second air outlets 1311 and 1312 in sequence in the vertical direction, and then flow to the second heat exchange channel 132. Air can also enter and exit from the transverse direction of the first heat exchange channel 131. The transverse direction intersects with the vertical direction. The transverse direction has relative third air outlets 1313 and fourth air outlets 1314. The third air outlet 1313 is close to the first heat exchanger 31, and the fourth air outlet 1314 is close to the second heat exchanger 32. After the air flows through the first heat exchanger 31 in the transverse direction, it flows through the third air outlet 1313 and the fourth air outlet 1314 and flows to the second heat exchanger 32.

[0056] The second heat exchange channel 132 is connected to the first heat exchange channel 131 , and communicates from the downstream side of the first heat exchange channel 131 to the upstream side of the first heat exchanger 31 , so as to guide the air passing through the first heat exchange channel 131 into the first heat exchanger 31 .

[0057] In the dehumidification air path, air enters the first heat exchange channel 131 through the vertical air outlet of the first heat exchange channel 131, then enters the second heat exchange channel 132 and is guided to the first heat exchanger 31. After entering the first heat exchanger 31, air enters the first heat exchange channel 131 through the lateral direction of the first heat exchange channel 131, and then flows to the second heat exchanger 32. In this embodiment, the dehumidification air path is arranged in the air supply air path and is a part of the air supply air path. The dehumidification air path includes a first dehumidification air path 41 and a second dehumidification air path 42.

[0058] In the first dehumidification air passage 41 , air flows through the first heat exchange passage 131 and the second heat exchange passage 132 to reach the upstream side of the first heat exchanger 31 .

[0059] The second dehumidification air passage 42 is connected to the first dehumidification air passage 41 , and the air flows through the first heat exchanger 31 and the first heat exchange channel 131 , and then flows to the second heat exchanger 32 .

[0060] The refrigerant flow path of this embodiment includes a compressor 34 , a first heat exchanger 31 , and a second heat exchanger 32 which are connected to each other.

[0061] The compressor 34, the first heat exchanger 31 and the second heat exchanger 32 are installed adjacent to each other in the first housing 11. The compressor 34, the first heat exchanger 31 and the second heat exchanger 32 are located in the air supply path, arranged on the upstream side of the air supply port 120, and located on the downstream side of the heat exchange unit 12. Thus, the volume of the dehumidification device 100 can be reduced, miniaturization is achieved, and maintenance is facilitated.

[0062] In this embodiment, the refrigerant flow path further includes a flow control valve 35, which is located on the main path where the first heat exchanger 31 is located, and the incoming refrigerant flow is adjusted by adjusting the opening of the flow control valve 35. The flow control valve 35 can be an expansion valve or a throttling device.

[0063] Furthermore, the amount of refrigerant is controlled by the flow control valve 35, thereby controlling the temperature of the air supplied to the room. Specifically, when the air supply temperature is high, the opening of the control valve is reduced, the flow resistance is increased, and the refrigerant flow rate of the flow path is reduced; when the air supply temperature is low, the opening of the flow control valve 35 is increased, the flow resistance is reduced, and the refrigerant flow rate of the flow path is increased.

[0064] The dehumidification device 100 can operate in a first dehumidification mode, a second dehumidification mode, a heat exchange mode, an internal circulation mode, and a mixed air mode. The following describes in detail each mode, refrigerant flow path state, and beneficial effects of the first embodiment.

[0065] First dehumidification mode

[0066] The first dehumidification mode is suitable for high temperature and high humidity conditions in spring and summer, and is turned on when the outdoor air is relatively clean. At this time, the first heat exchanger 31 is an evaporator, and the second heat exchanger 32 is a condenser. The air supply fan 14 and the exhaust fan 15 are turned on, and the first air valve 16 and the second air valve 17 are closed. Outdoor fresh air is introduced from the air inlet 110, and driven by the air supply fan 14, it flows through the heat exchange unit 12 and exchanges heat and moisture with the indoor return air entering from the return air outlet 130. After the heat and moisture exchange, the temperature of the outdoor fresh air decreases. Next, the outdoor fresh air enters the heat exchange unit, and along the dehumidification air path, it first enters the first heat exchange channel 131 from the first air outlet 1311 in the vertical direction of the first heat exchange channel 131, and then enters the second heat exchange channel 132 from the second air outlet 1312, reaches the upstream side of the first heat exchanger 31, flows through the first heat exchanger 31, and then flows along the lateral direction of the first heat exchange channel 131 from the third air outlet 1313 to the fourth air outlet 1314, and then flows to the second heat exchanger 32.

[0067] The outdoor fresh air that has just left the heat exchange unit 12 will exchange heat with the air flowing through the second dehumidification air path 42 in the first heat exchange channel 131. At this time, the air in the second dehumidification air path 42 has been cooled by the first heat exchanger 31, so the temperature of the outdoor fresh air is reduced; after entering the first heat exchanger 31 in the second dehumidification air path 42, it is cooled and dehumidified, and the temperature is further reduced. After the outdoor fresh air flows out of the first heat exchanger 31 along the first heat exchange channel 131 and the second heat exchange channel 132 in turn, it meets the air passing through the first dehumidification air path 41, that is, the outdoor fresh air that has just left the heat exchange unit 12 is heated and heated after heat exchange with it; finally, it flows through the second heat exchanger 32 and is heated and heated again. The air passing through the second heat exchanger 32 is finally sent into the room from the air supply port 120. Under the joint action of the first heat exchanger 31 and the second heat exchanger 32, the fresh air is introduced and the dehumidified and cooled fresh air is heated to prevent the cold air from being directly discharged into the room.

[0068] In this process, the outdoor fresh air will exchange heat with the air in the second dehumidification air path 42 when it is in the first dehumidification air path 41, that is, before entering the first heat exchanger 31, the air has been cooled and dehumidified in advance, releasing some moisture, and entering the first heat exchanger 31 at a relatively lower temperature. As a result, the air can be cooled to a lower temperature after passing through the first heat exchanger 31, releasing more moisture, which is conducive to improving the dehumidification effect and the dehumidification amount. By setting the heat exchange channel 13, the air flows through the channel between the first heat exchanger 31 and the second heat exchanger 32 twice, and then is sent out by the air supply vent 120, which increases the number of heat exchanges, thereby effectively increasing the dehumidification amount and improving the dehumidification effect.

[0069] The refrigerant flow path is open, and the refrigerant flow path state is that the refrigerant evaporates and absorbs heat in the first heat exchanger 31 to transform into low-pressure steam, cooling the fresh air flowing through. The low-pressure steam enters the compressor 34, is compressed into high-temperature and high-pressure refrigerant gas, and then discharged from the exhaust port of the compressor 34. The refrigerant gas then flows into the second heat exchanger 32, where it condenses and dissipates heat. After the high-temperature and high-pressure refrigerant gas enters the second heat exchanger 32, it is cooled into high-pressure liquid refrigerant and enters the flow control valve 35. After the refrigerant flowing out of the second heat exchanger 32 is throttled by the flow control valve 35, it is transformed into a low-temperature and low-pressure two-phase refrigerant and then flows into the first heat exchanger 31, continuing the above cycle.

[0070] Second dehumidification mode

[0071] The second dehumidification mode is suitable for turning on when the outdoor PM2.5 is high and the air quality is poor, or it can achieve rapid dehumidification in the high humidity stage indoors at the initial startup of the equipment. At this time, the supply fan 14 and the exhaust fan 15 are turned on, the first air valve 16 is closed, and the second air valve 17 is opened. The indoor return air is introduced from the return air vent 130. Driven by the supply fan 14, the indoor air enters the upstream side of the supply fan 14 from the second air valve 17, and then along the dehumidification air path, it will first enter the first heat exchange channel 131 from the first air vent 1311 in the vertical direction of the first heat exchange channel 131. In the first heat exchange channel 131, it will exchange heat with the air flowing through the second dehumidification air path 42. After being cooled and dehumidified, it will enter the second heat exchange channel 132 and reach the upstream side of the first heat exchanger 31. After being cooled and dehumidified in the first heat exchanger 31, the temperature is further reduced. Then, the air enters the first heat exchange channel 131 along the lateral direction of the first heat exchange channel 131, exchanges heat with the air that has just entered the first heat exchange channel 131 in the first heat exchange channel 131, and heats up the air before flowing to the second heat exchanger 32. After being heated by the second heat exchanger 32, the air is sent into the room from the air supply vent 120. On the other hand, the outdoor fresh air enters from the fresh air vent, and is discharged from the exhaust vent under the drive of the exhaust fan 15.

[0072] The refrigerant flow path state is the same as that in the first dehumidification mode and will not be described here.

[0073] In the second dehumidification mode, the indoor return air will exchange heat with the air in the second dehumidification air path 42 when it passes through the first dehumidification air path 41, that is, before entering the first heat exchanger 31, the air has been cooled and dehumidified in advance, releasing some moisture, and enters the first heat exchanger 31 at a relatively lower temperature. Therefore, the air can be cooled to a lower temperature after passing through the first heat exchanger 31, releasing more moisture, which is conducive to improving the dehumidification effect and the dehumidification amount.

[0074] Hot swap mode

[0075] The working state of each component of the dehumidification device 100 is that the heat pump system is turned off, the refrigerant flow path is not opened, and the air supply fan 14 and the exhaust fan 15 are turned on. The air flow path state is the same as the first dehumidification mode.

[0076] The heat exchange unit 12 operates independently. When the outdoor humidity is not high and the temperature is low, the return air is used to heat the fresh air before it is sent indoors. This mode achieves high efficiency and quietness, which is beneficial to improving user experience.

[0077] Internal circulation mode

[0078] The working state of each component of the dehumidification system is that the air inlet 110 and the air outlet 140 are closed, the air supply fan 14 and the exhaust fan 15 are turned on, the heat pump system is turned off, the refrigerant flow path is not opened, the first air valve 16 is opened, and the second air valve 17 is closed.

[0079] The air flow path state is that the indoor air enters the first shell 11 through the return air outlet 130, enters the exhaust air path and then enters the heat exchange unit 12. When the indoor air passes through the heat exchange unit 12 and reaches the exhaust air outlet 140, since the exhaust air outlet 140 is closed, the air will not be discharged from the exhaust air outlet 140, but will enter the supply air path along the channel connecting the exhaust air outlet 140 and the air inlet 110, that is, the first air valve 16. At this time, the air inlet 110 is closed, and the indoor air passes through the heat exchange unit 12 again and is discharged to the room from the supply air outlet 120, thereby realizing indoor air circulation.

[0080] The beneficial effect of the internal circulation mode is that it is suitable for working conditions where the heat exchange unit 12 needs to be defrosted.

[0081] Mixed air mode

[0082] The working state of each component of the dehumidification system is that the exhaust air vent 140 is closed, the air inlet vent 110 is opened, the air supply fan 14 and the exhaust fan 15 are turned on, the heat pump system is turned off, the refrigerant flow path is not opened, the first air valve 16 is opened, and the second air valve 17 is closed.

[0083] The air flow path state is that the indoor air that enters the first shell 11 through the return air vent 130 enters the exhaust air path and then enters the heat exchange unit 12. When the indoor air passes through the heat exchange unit 12 and reaches the exhaust air vent 140, since the exhaust air vent 140 is closed, the air will not be discharged from the exhaust air vent 140, but will enter the supply air path along the channel connecting the exhaust air vent 140 and the air inlet 110. At this time, the air inlet 110 is open. Therefore, outdoor fresh air enters from the air inlet 110, mixes with the indoor air entering the supply air path, and then enters the heat exchange unit 12 together, and is discharged to the room from the supply air vent 120.

[0084] The beneficial effect of the mixed air mode is that it allows a small amount of fresh air to be introduced, achieving an effect similar to mechanical bypass, which is beneficial to reducing operating energy consumption.

[0085] Figure 6 A schematic diagram of air flow in a first dehumidification mode of a dehumidification system according to a second embodiment of the utility model; Figure 7 A schematic diagram of air flow in a second dehumidification mode of a dehumidification system according to a second embodiment of the utility model; Fig.11 It is a schematic diagram of the refrigerant flow path of the dehumidification system of the second embodiment and the third embodiment of the utility model. Figure 6 and Figure 7 In the figure, the areas enclosed by the two dotted boxes are the first heat exchange channel and the second heat exchange channel respectively.

[0086] Second embodiment

[0087] like Figure 6 and Figure 7 As shown, an embodiment of the present disclosure provides a dehumidification system, which includes a dehumidification device 100 and an outdoor unit 200, and the outdoor unit 200 is connected to the dehumidification device 100 through a refrigerant pipe. The outdoor unit 200 includes a second shell 21, a heat dissipation unit 22 and a third heat exchanger 33, the heat dissipation unit 22 and the third heat exchanger 33 are arranged in the second shell 21, and the third heat exchanger 33 is located on the refrigerant flow path.

[0088] The same structures as those of the first embodiment will not be described in detail, and only the differences are described below.

[0089] The refrigerant flow path includes at least a connected compressor 34, a first heat exchanger 31, a second heat exchanger 32 and a third heat exchanger 33; wherein the first heat exchanger 31 and the second heat exchanger 32 are arranged in the dehumidification device 100 and are located on the upstream side of the air supply outlet 120, and the third heat exchanger 33 is arranged in the outdoor unit 200.

[0090] Specifically, the dehumidifier 100 is located in the first space, and the outdoor unit 200 is located in the second space. The first space and the second space are two different spaces. In this embodiment, the first space is indoors, and the second space is outdoor. In other embodiments, the first space and the second space may also be two independent spaces.

[0091] The outdoor unit 200 includes a second housing 21. A third heat exchanger 33 and a heat dissipation unit 22 are installed in the second housing 21. The heat dissipation unit 22 may be a heat dissipation fan. The number of heat dissipation fans is set according to actual needs, and may be one or more heat dissipation fan units. The heat dissipation fan is arranged on the upstream side of the third heat exchanger 33, that is, the heat dissipation fan discharges air toward the third heat exchanger 33, so that the third heat exchanger 33 dissipates heat and cools.

[0092] like Fig.11As shown, the refrigerant flow path of this embodiment includes a compressor 34, a first heat exchanger 31, a second heat exchanger 32 and a third heat exchanger 33 which are connected to each other.

[0093] The first heat exchanger 31 and the second heat exchanger 32 are installed in the first shell 11. The first heat exchanger 31 and the second heat exchanger 32 are located in the air supply path, and are arranged on the upstream side of the air supply fan 14 and the downstream side of the heat exchange unit 12. In other embodiments, the first heat exchanger 31 and the second heat exchanger 32 are located in the air supply path, and are arranged on the downstream side of the air supply fan 14 and the upstream side of the air supply port 120. The third heat exchanger 33 is installed in the second shell 21. In this embodiment, the compressor 34 is installed in the second shell 21. Thereby, the volume of the dehumidification device 100 can be reduced, and miniaturization is achieved, and maintenance is convenient. In other embodiments, the compressor 34 can also be installed in the first shell 11. The refrigerant flow path forms a first flow path connecting the compressor 34, the second heat exchanger 32 and the first heat exchanger 31, and a second flow path connecting the compressor 34, the third heat exchanger 33 and the first heat exchanger 31. The first flow path includes a first branch where the second heat exchanger 32 is located, and the second flow path includes a second branch where the third heat exchanger 33 is located. The first branch and the second branch are connected in parallel on the refrigerant flow path. The dehumidifier 100 is connected to the outdoor unit 200 through the refrigerant pipe of the second branch.

[0094] In this embodiment, the refrigerant flow path further includes a flow control valve 35, which is disposed on the main path where the first heat exchanger 31 is located, and the refrigerant flow entering the first branch and the second branch is adjusted by adjusting the opening of the flow control valve 35. The flow control valve 35 may be an expansion valve or a throttling device.

[0095] The parallel connection allows the second heat exchanger 32 and the third heat exchanger 33 to operate independently. If one of the heat exchangers fails, the other heat exchangers can continue to work, which helps to ensure the reliability and stability of the dehumidification system operation.

[0096] The dehumidification system of the second embodiment can operate in the first dehumidification mode, the second dehumidification mode, the heat exchange mode, the internal circulation mode and the mixed air mode. The following describes in detail the various modes, refrigerant flow path states and beneficial effects of the second embodiment.

[0097] First dehumidification mode

[0098] The first dehumidification mode is suitable for high temperature and high humidity conditions in spring and summer, and is turned on when the outdoor air is relatively clean. At this time, the air supply fan 14 and the exhaust fan 15 of the dehumidification device 100 are turned on, the first air valve 16 and the second air valve 17 are closed, and the heat dissipation unit 22 of the outdoor unit 200 is turned on. The outdoor fresh air is introduced from the air inlet 110, and under the drive of the air supply fan 14, it flows through the heat exchange unit 12 and exchanges heat and moisture with the indoor return air entering from the return air outlet 130. After the heat and moisture exchange, the temperature of the outdoor fresh air decreases. Then, the outdoor fresh air will first enter the first heat exchange channel 131 from the first air outlet 1311 in the vertical direction of the first heat exchange channel 131 along the dehumidification air path, and will exchange heat with the air flowing through the second dehumidification air path 42 in the first heat exchange channel 131. After being cooled and dehumidified, it will enter the second heat exchange channel 132 from the second air outlet 1312 and reach the upstream side of the first heat exchanger 31. The air is cooled and dehumidified in the first heat exchanger 31, and the temperature is further reduced. Then, the air enters the first heat exchange channel 131 along the lateral direction of the first heat exchange channel 131, flows through the third air outlet 1313 and the fourth air outlet 1314 in the first heat exchange channel 131, exchanges heat with the air that has just entered the first heat exchange channel 131, and heats up the temperature, and then flows to the second heat exchanger 32. After being heated by the second heat exchanger 32, the air is sent into the room from the air supply outlet 120. In this process, when the outdoor fresh air is in the first dehumidification air path 41, it will exchange heat with the outdoor fresh air in the second dehumidification air path 42, that is, before entering the first heat exchanger 31, the air has been cooled and dehumidified in advance, releasing some moisture, and entering the first heat exchanger 31 at a relatively lower temperature. As a result, the air can be cooled to a lower temperature after entering the first heat exchanger 31, releasing more moisture, which is conducive to improving the dehumidification effect and the dehumidification amount.

[0099] The outdoor unit 200 is driven by the heat dissipation fan to introduce outdoor air into the outdoor unit 200, and after passing through the third heat exchanger 33 to be heated, the air is discharged outdoors again.

[0100] The refrigerant flow path is open, and the refrigerant flow path state is that the refrigerant evaporates and absorbs heat in the first heat exchanger 31 to transform into low-pressure steam, cooling the fresh air flowing through. The low-pressure steam flows into the compressor 34, is compressed into high-temperature and high-pressure refrigerant gas, and then discharged from the exhaust port of the compressor 34. A part of the refrigerant gas enters the first branch and flows to the second heat exchanger 32, and the other part enters the second branch and flows to the third heat exchanger 33, condensing and dissipating heat in the second heat exchanger 32 and the third heat exchanger 33. After the high-temperature and high-pressure refrigerant gas enters the second heat exchanger 32 set in the dehumidification device 100, it is cooled into a high-pressure liquid refrigerant and enters the flow control valve 35. At the same time, after the high-temperature and high-pressure refrigerant gas enters the third heat exchanger 33 set in the outdoor unit 200, it is cooled into a high-pressure liquid refrigerant and enters the flow control valve 35. The refrigerant flowing out of the second heat exchanger 32 and the third heat exchanger 33 is throttled by the flow control valve 35 and converted into a low-temperature and low-pressure two-phase refrigerant. The refrigerants in the two branches are mixed and then flow into the main road where the first heat exchanger 31 is located, continuing the above-mentioned cycle process.

[0101] In the first dehumidification mode, the first heat exchanger 31 is an evaporator, the second heat exchanger 32 and the third heat exchanger 33 are condensers, and the heat released by the third heat exchanger 33 is discharged to the outside through the outdoor unit 200. In addition to the conventional second heat exchanger 32, the third heat exchanger 33 is set to increase the heat exchange area on the condensation side. Since the second shell 21 is set outdoors, a more powerful heat dissipation fan or a heat dissipation fan unit can be set in the second shell 21. Further, the motor speed of the heat dissipation fan can be controlled to increase the motor rotation speed, thereby allowing a larger air volume to flow through the third heat exchanger 33, accelerating heat dissipation, and achieving a larger dehumidification amount and higher dehumidification energy efficiency. Even if the pipeline of the dehumidification device 100 is limited, the condenser can have a good heat dissipation effect.

[0102] Second dehumidification mode

[0103] The second dehumidification mode is suitable for turning on when the outdoor PM2.5 is high and the air quality is poor, or it can achieve rapid dehumidification in the high humidity stage indoors at the initial startup of the equipment. At this time, the air supply fan 14 of the dehumidification device 100 and the heat dissipation unit 22 of the outdoor unit 200 are turned on, the exhaust fan 15 is turned off, the first air valve 16 is closed, and the second air valve 17 is opened. The indoor return air is introduced from the return air vent 130. Driven by the air supply fan 14, the indoor air will first enter the first heat exchange channel 131 from the first air vent 1311 in the vertical direction of the first heat exchange channel 131 along the dehumidification air path. In the first heat exchange channel 131, it will exchange heat with the air flowing through the second dehumidification air path 42. After being cooled and dehumidified, it will enter the second heat exchange channel 132 and reach the upstream side of the first heat exchanger 31. After being cooled and dehumidified in the first heat exchanger 31, the temperature is further reduced. Then, the air enters the first heat exchange channel 131 along the lateral direction of the first heat exchange channel 131, exchanges heat with the air that has just entered the first heat exchange channel 131 in the first heat exchange channel 131, and heats up the air before flowing to the second heat exchanger 32. After being heated by the second heat exchanger 32, the air is sent into the room from the air supply port 120. The outdoor unit 200, driven by the heat dissipation fan, introduces outdoor air into the outdoor unit 200, flows through the third heat exchanger 33, is heated, and then is discharged outdoors again.

[0104] The refrigerant flow path state is the same as that in the first dehumidification mode and will not be described here.

[0105] In the second dehumidification mode, the startup of the outdoor unit 200 can take away the extra condensation heat, allowing a larger air volume to flow through the third heat exchanger 33 to accelerate heat dissipation. After the dehumidification device 100 can achieve sufficient dehumidification and cooling, it is heated to a suitable temperature to avoid the overheated temperature being blown directly into the room. In the case where it is not appropriate to introduce fresh air, rapid indoor dehumidification can also be achieved.

[0106] The heat exchange mode, internal circulation mode and mixed air mode of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0107] Figure 8 A schematic diagram of air flow in a first dehumidification mode of a dehumidification system according to a third embodiment of the utility model; Fig. 9 It is a schematic diagram of air flow in the second dehumidification mode of the dehumidification system according to the third embodiment of the utility model. Figure 8 and Fig. 9 In the figure, the areas enclosed by the two dotted boxes are the first heat exchange channel and the second heat exchange channel respectively.

[0108] Third embodiment

[0109] The dehumidification system of this embodiment includes a dehumidification device 100 and an outdoor unit 200, and the dehumidification device 100 also includes a humidification unit 18. The dehumidification device 100 includes a first shell 11, a heat exchange unit 12, a heat exchange unit and a humidification unit 18. The first shell 11 includes a first heat exchange shell 111 and a first humidification shell 112 that are interconnected. The heat exchange unit 12, the air supply fan 14 and the exhaust fan 15 are located in the first heat exchange shell 111, and the heat exchange unit 12, the air supply fan 14, the exhaust fan 15 and the first heat exchange shell 111 constitute a heat exchange device. The humidification unit 18, the first heat exchanger 31 and the second heat exchanger 32 are located in the first humidification shell 112, and the humidification unit 18, the first heat exchanger 31, the second heat exchanger 32 and the first humidification shell 112 constitute a humidity control device. The heat exchange device and the humidity control device are connected through a transition air supply port. The humidity control device can drive the air flow through the air supply fan 14 in the heat exchange device, or it can be a humidity control device with a fan arranged inside.

[0110] The humidity control device of this embodiment is not provided with a fan, and the air flow is driven by the air supply fan 14 of the heat exchange device. In other embodiments, the humidity control device may also be provided with a fan inside.

[0111] The heat exchange device includes a first heat exchange shell 111 , an air supply passage, an air exhaust passage and a heat exchange unit 12 .

[0112] The first heat exchange shell 111 has a first side and a second side opposite to each other. The first side of the first heat exchange shell 111 is provided with an air inlet 110 and an air outlet 140, and the second side of the first heat exchange shell 111 is provided with a return air outlet 130 and a first transition air supply outlet 150. The air inlet 110 and the air outlet 140 are connected to the outside through pipes respectively. In this embodiment, the air inlet 110 and the first transition air supply outlet 150 are arranged approximately diagonally, and the return air outlet 130 and the air outlet 140 are arranged approximately diagonally. In other embodiments, the air inlet 110 and the first transition air supply outlet 150 are arranged oppositely. An air supply air path and an air exhaust air path are formed in the first heat exchange shell 111. The two ends of the air supply air path are the air inlet 110 and the first transition air supply outlet 150, respectively, and the two ends of the exhaust air path are the return air outlet 130 and the air exhaust air outlet 140, respectively. The air supply path extends to the first humidification housing 112 through the transition air supply port.

[0113] The heat exchange unit 12 is located at the intersection of the air supply path and the exhaust path, and the heat exchange unit 12 is composed of a plurality of thin plates glued together. For example, the heat exchange unit 12 can be a full heat exchange core. The heat exchange unit 12 can be in the shape of a square body, a hexagon, etc. In the present embodiment, the heat exchange unit 12 is a hexagon, and the heat exchange unit 12 has a first surface and a second surface relative to each other and a third surface and a fourth surface relative to each other. At least a portion of the first surface is arranged opposite to the air inlet 110, at least a portion of the second surface is arranged opposite to the first transition air supply port 150, at least a portion of the third surface is arranged opposite to the return air port 130, and at least a portion of the fourth surface is arranged opposite to the exhaust air port 140. Air filters can be arranged on the upstream side of the four surfaces of the heat exchange unit 12 to purify the air passing through the air supply path and / or the exhaust path.

[0114] The first heat exchange housing 111 is also provided with an air supply fan 14 and an exhaust fan 15. In this embodiment, the air supply fan 14 is provided near the first transition air supply port 150 and is located at the upstream side of the first transition air supply port 150; in other embodiments, the air supply fan 14 may be provided near the air inlet 110. In this embodiment, the exhaust fan 15 is provided near the exhaust air port 140 and is located at the upstream side of the exhaust air port 140; in other embodiments, the exhaust fan 15 may be provided near the return air port 130. The air supply fan 14 and the exhaust fan 15 are preferably variable frequency fans with adjustable speed.

[0115] The humidity control device includes a first humidifying housing 112 , a first heat exchanger 31 , a second heat exchanger 32 , a humidifying unit 18 , and a sterilizing unit.

[0116] The first humidification housing 112 is configured as a box-like structure, such as a rectangular parallelepiped or a cube, wherein the first humidification housing 112 has a top surface, a bottom surface, and a side surface, and the side surface includes a first wall surface and a second wall surface, wherein the first wall surface and the second wall surface are arranged opposite to each other. In other optional embodiments, the first humidification housing 112 may also be configured into other shapes, such as a cylindrical shape, a prismatic shape, etc. Further, the first humidification housing 112 is provided with a second transition air outlet 160 and an air outlet 120.

[0117] The second transition air supply port 160 is an opening provided on the first humidifying shell 112, and is used to allow air outside the first humidifying shell 112 to enter the first humidifying shell 112. In this embodiment, the second transition air supply port 160 is connected to the first transition air supply port 150 of the first heat exchange shell 111, and the second transition air supply port 160 is provided on a side surface of the first humidifying shell 112. Specifically, the second transition air supply port 160 is located on the first wall surface of the first humidifying shell 112. In other optional embodiments, the second transition air supply port 160 can also be provided at other positions of the first humidifying shell 112, such as the top surface or the bottom surface, and its setting position can be adjusted according to actual needs.

[0118] The air supply vent 120 is an opening provided on the first humidifying housing 112 on the surface where the second transition air supply vent 160 is located, and is used to blow the air in the first humidifying housing 112 out to the outside of the first humidifying housing 112, such as indoors. In the present embodiment, the air supply vent 120 is provided on a side surface of the first humidifying housing 112, specifically, the air supply vent 120 is located on the second wall surface of the first humidifying housing 112 opposite to the first wall surface. In other optional embodiments, the air supply vent 120 may also be provided at other positions of the first humidifying housing 112, such as the bottom surface or the top surface, and its setting position may be adjusted according to actual needs and the relative position of the second transition air supply vent 160.

[0119] The heat exchange unit includes a first heat exchanger 31 and a second heat exchanger 32 which are arranged at intervals. The first heat exchanger 31 and the second heat exchanger 32 are installed in the first humidification housing 112, and the first heat exchanger 31 and the second heat exchanger 32 are located at the upstream side of the air supply port 120. The first heat exchanger 31 is close to the second transition air supply port 160, the humidification unit 18 is close to the air supply port 120, and the second heat exchanger 32 is located between the first heat exchanger 31 and the humidification unit 18. The heat exchange unit also includes a heat exchange channel 13.

[0120] A heat exchange channel 13 is formed between the first heat exchanger 31 and the second heat exchanger 32. The heat exchange channel 13 is a channel for air to flow through the first heat exchanger 31 and the second heat exchanger 32. The air flowing from the air inlet 110 to the air supply outlet 120 can flow through the heat exchange channel 13 and then flow to the air supply outlet 120. The air flowing from the return air outlet 130 to the air supply outlet 120 can flow through the heat exchange channel 13 and then flow to the air supply outlet 120. The heat exchange channel 13 includes a first heat exchange channel 131 and a second heat exchange channel 132.

[0121] The first heat exchange channel 131 is arranged between the first heat exchanger 31 and the second heat exchanger 32. In this embodiment, air outlets are arranged around the first heat exchange channel 131, that is, air can enter and exit the first heat exchange channel 131 in the vertical direction, and there are first and second air outlets 1311 and 1312 opposite to each other in the vertical direction. The first air outlet 1311 is close to the second transition air supply port 160, and the air can flow through the first and second air outlets 1311 and 1312 in sequence in the vertical direction, and then flow to the second heat exchange channel 132. Air can also enter and exit from the transverse direction of the first heat exchange channel 131. The transverse direction intersects with the vertical direction. The transverse direction has relative third air outlets 1313 and fourth air outlets 1314. The third air outlet 1313 is close to the first heat exchanger 31, and the fourth air outlet 1314 is close to the second heat exchanger 32. After the air flows through the first heat exchanger 31 in the transverse direction, it flows through the third air outlet 1313 and the fourth air outlet 1314 and flows to the second heat exchanger 32.

[0122] The second heat exchange channel 132 is connected to the first heat exchange channel 131 , and communicates from the downstream side of the first heat exchange channel 131 to the upstream side of the first heat exchanger 31 , so as to guide the air passing through the first heat exchange channel 131 into the first heat exchanger 31 .

[0123] In the dehumidification air path, air flows through the first transition air supply port 150 of the first heat exchange shell 111 and the second transition air supply port 160 of the first humidification shell 112, and then enters the first heat exchange channel 131 from the air port in the vertical direction of the first heat exchange channel 131, and then enters the second heat exchange channel 132 to be guided to the first heat exchanger 31, and then enters the first heat exchange channel 131 through the lateral direction of the first heat exchange channel 131, and then flows through the second heat exchanger 32, and then is discharged from the air supply port 120. The dehumidification air path includes a first dehumidification air path 41 and a second dehumidification air path 42.

[0124] The air enters the first dehumidification air passage 41 and flows through the first heat exchange passage 131 and the second heat exchange passage 132 to reach the upstream side of the first heat exchanger 31 .

[0125] The second dehumidification air passage 42 is connected to the first dehumidification air passage 41 , and the air flows through the first heat exchanger 31 and the first heat exchange channel 131 , and then flows to the second heat exchanger 32 .

[0126] The humidifier 18 is located on the downstream side of the second heat exchanger 32 and is a device for humidifying the air by mixing water with the air. The humidifier 18 is a rotating device that can adjust the amount of water produced by adjusting its rotation speed. It includes a humidifier motor and a water breaking unit.

[0127] The humidification motor drives the humidification rotating shaft to rotate by power supply. The types of humidification motors include: a type that can achieve stepless adjustment of the rotation speed, such as a DC motor; and a type that can only adjust the rotation speed according to a fixed gear, such as an AC motor.

[0128] The water breaking unit is a device that breaks large water droplets into water mist particles after they collide with the wall. The water breaking unit is a structure that rotates with the rotation of the humidification rotary shaft.

[0129] The sterilization section electrolyzes the sodium chloride solution through electrodes to produce disinfectant, and the disinfectant enters the humidification section 18, wherein the raw material is a sodium chloride solution with a certain concentration.

[0130] The refrigerant flow path of this embodiment is the same as that of the second embodiment, and the humidity control device is connected to the outdoor unit 200 through a refrigerant pipe.

[0131] The outdoor unit 200 includes a second housing 21. A third heat exchanger 33 and a heat dissipation unit 22 are installed in the second housing 21. The heat dissipation unit 22 may be a heat dissipation fan. The number of heat dissipation fans is set according to actual needs, and may be one or more heat dissipation fan units. The heat dissipation fan is arranged on the upstream side of the third heat exchanger 33, that is, the heat dissipation fan discharges air toward the third heat exchanger 33, so that the third heat exchanger 33 dissipates heat and cools.

[0132] The dehumidification system of the third embodiment can operate in the first dehumidification mode, the second dehumidification mode, the heat exchange mode, the internal circulation mode and the mixed air mode. The following describes in detail the various modes, refrigerant flow path states and beneficial effects of the third embodiment.

[0133] First dehumidification mode

[0134] The first dehumidification mode is suitable for high temperature and high humidity conditions in spring and summer, and is turned on when the outdoor air is relatively clean. At this time, the air supply fan 14 and the exhaust fan 15 of the heat exchange device are turned on, and the heat dissipation unit 22 of the outdoor unit 200 is turned on. In the embodiment of the humidity control device with a fan, at this time, the fan in the humidity control device is started. Outdoor fresh air is introduced from the air inlet 110, and under the drive of the air supply fan 14, it flows through the heat exchange unit 12 and exchanges heat and moisture with the indoor return air entering from the return air outlet 130, and is sent to the second transition air supply port 160 of the humidity control device from the first transition air supply port 150. The air entering the humidity control device will first enter the first heat exchange channel 131 from the first air port 1311 in the vertical direction of the first heat exchange channel 131, and will exchange heat with the air flowing through the second dehumidification air path 42 in the first heat exchange channel 131. After being cooled and dehumidified, it will enter the second heat exchange channel 132 from the second air port 1312 and reach the upstream side of the first heat exchanger 31. The air is cooled and dehumidified in the first heat exchanger 31, and the temperature is further reduced. Then, the air enters the first heat exchange channel 131 along the lateral direction of the first heat exchange channel 131, flows through the third air outlet 1313 and the fourth air outlet 1314 in the first heat exchange channel 131, exchanges heat with the air that has just entered the first heat exchange channel 131, and heats up the temperature, and then flows to the second heat exchanger 32. After being heated by the second heat exchanger 32, the air is discharged from the air supply outlet 120 of the humidity control device. Under the joint action of the first heat exchanger 31 and the second heat exchanger 32, the fresh air after dehumidification and cooling is heated to avoid the cold air being directly discharged into the room. The heated fresh air enters the humidifying section 18, in which the humidifying motor drives the water breaking section to rotate, breaks up the disinfectant in the humidifying section 18, and forms water mist particles that mix with the air, thereby achieving indoor disinfection and sterilization. The outdoor unit 200 is driven by the heat dissipation fan to introduce outdoor air into the outdoor unit 200, and after passing through the third heat exchanger 33 to be heated, the air is discharged outdoors again.

[0135] The refrigerant flow path is open, and the refrigerant flow path state is that the refrigerant evaporates and absorbs heat in the first heat exchanger 31 to transform into low-pressure steam, cooling the fresh air flowing through. The low-pressure steam flows into the compressor 34, is compressed into high-temperature and high-pressure refrigerant gas, and then discharged from the exhaust port of the compressor 34. A part of the refrigerant gas flow enters the first branch and flows to the second heat exchanger 32, and the other part enters the second branch and flows to the third heat exchanger 33, condensing and dissipating heat in the second heat exchanger 32 and the third heat exchanger 33. After the high-temperature and high-pressure refrigerant gas enters the second heat exchanger 32 set in the humidity control device, it is cooled into a high-pressure liquid refrigerant and enters the flow control valve 35. After the high-temperature and high-pressure refrigerant gas enters the third heat exchanger 33 set in the outdoor unit 200, it is cooled into a high-pressure liquid refrigerant and enters the flow control valve 35. The refrigerant flowing out of the second heat exchanger 32 and the third heat exchanger 33 is throttled by the flow control valve 35 and converted into a low-temperature and low-pressure two-phase refrigerant. The refrigerants in the two branches are mixed and then flow into the main road where the first heat exchanger 31 is located, continuing the above-mentioned cycle process.

[0136] In the first dehumidification mode, the first heat exchanger 31 is an evaporator, the second heat exchanger 32 and the third heat exchanger 33 are condensers, and the heat released by the third heat exchanger 33 is discharged to the outside through the outdoor unit 200. In addition to the conventional second heat exchanger 32, the third heat exchanger 33 is provided to increase the heat exchange area on the condensation side. Since the second shell 21 is provided outdoors, a more powerful heat dissipation fan or a heat dissipation fan unit can be provided in the second shell 21. Furthermore, the humidity control device is connected to the heat exchange device, which can facilitate the installation of the humidity control device according to the needs of the building where the heat exchange device is installed, thereby realizing the whole house dehumidification system.

[0137] Second dehumidification mode

[0138] The second dehumidification mode is suitable for turning on when the outdoor PM2.5 is high and the air quality is poor, or it can achieve rapid dehumidification in the high humidity stage of the indoor room at the initial startup of the equipment. At this time, the air supply fan 14 of the heat exchange device and the heat dissipation unit 22 of the outdoor unit 200 are turned on, and the exhaust fan 15 is turned off. The indoor return air is introduced from the return air vent 130, and enters from the air inlet of the humidity control device under the drive of the air supply fan 14. In the humidity control device, under the drive of the air supply fan 14, the indoor air will first enter the first heat exchange channel 13113 from the first air vent 1311 in the vertical direction of the first heat exchange channel 131 along the dehumidification air path. In the first heat exchange channel 131, it will exchange heat with the air flowing through the second dehumidification air path 42. After being cooled and dehumidified, it will enter the second heat exchange channel 132 and reach the upstream side of the first heat exchanger 31. After being cooled and dehumidified in the first heat exchanger 31, the temperature is further reduced. Then, it enters the first heat exchange channel 131 through the lateral direction of the first heat exchange channel 131, exchanges heat with the air that has just entered the first heat exchange channel 131 in the first heat exchange channel 131, raises the temperature, and then flows to the second heat exchanger 32. After being heated by the second heat exchanger 32, it flows through the first heat exchanger 31 for deep cooling and dehumidification, and then flows through the second heat exchanger 32 for reheating before being sent into the room from the air supply vent 120. Driven by the heat dissipation fan, the outdoor unit 200 introduces outdoor air into the outdoor unit 200, flows through the third heat exchanger 33 for heating, and then is discharged outdoors again.

[0139] The refrigerant flow path state is the same as that in the first dehumidification mode and will not be described here.

[0140] In the second dehumidification mode, the startup of the outdoor unit 200 can take away the extra condensation heat, allowing a larger air volume to flow through the third heat exchanger 33 to accelerate heat dissipation. After the dehumidification device 100 can achieve sufficient dehumidification and cooling, it is heated to a suitable temperature to avoid the overheated temperature being blown directly into the room. In the case where it is not appropriate to introduce fresh air, rapid indoor dehumidification can also be achieved.

[0141] The heat exchange mode, internal circulation mode and mixed air mode of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0142] So far, the embodiments of the present invention have been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0143] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element are not limited to the various specific structures and shapes mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0144] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dehumidification device, comprising: The first shell is provided with an air inlet and an air supply outlet; A refrigerant flow path, including a connected compressor and a heat exchange unit; It is characterized in that The heat exchange unit comprises: a first heat exchanger and a second heat exchanger which are arranged at intervals, wherein the first heat exchanger and the second heat exchanger are located at the upstream side of the air supply outlet; The heat exchange channel is used to allow air to flow between the first heat exchanger and the second heat exchanger.

2. The dehumidification device according to claim 1, characterized in that: The first shell is also provided with a return air vent; The dehumidification device further includes a heat exchange unit disposed in the first housing; The air flowing from the air inlet to the air supply outlet flows through the heat exchange channel, and / or the air flowing from the air return outlet to the air supply outlet flows through the heat exchange channel.

3. The dehumidification device according to claim 2, characterized in that: The heat exchange channel comprises: A first heat exchange channel, arranged between the first heat exchanger and the second heat exchanger, having a first air outlet and a second air outlet; The second heat exchange channel is connected to the second air outlet and is located on a side of the first heat exchanger away from the second heat exchanger.

4. The dehumidification device according to claim 3, characterized in that: The first heat exchange channel also includes a third air outlet; The air flowing through the first heat exchange channel flows through the second heat exchange channel and then flows from the third air outlet to the first heat exchanger.

5. The dehumidification device according to claim 3, characterized in that: Also includes: Dehumidification air path; In the dehumidification air path, air flows through the first heat exchange channel, the second heat exchange channel, and the first heat exchanger in sequence, and then flows through the first heat exchange channel to the second heat exchanger.

6. The dehumidification device according to claim 5, characterized in that: The dehumidification air path comprises: a first dehumidification air path, in which air flows through the first heat exchange channel and the second heat exchange channel and then flows to the upstream side of the first heat exchanger; In the second dehumidification air path, air flows through the first heat exchanger and the first heat exchange channel, and then flows to the second heat exchanger.

7. The dehumidification device according to any one of claims 2 to 6, characterized in that: An air supply passage and an air exhaust passage are formed in the first shell, one end of the air supply passage is provided with the air inlet, and the other end is provided with the air supply outlet, one end of the air exhaust passage is provided with the air return outlet, and the other end is provided with the air exhaust outlet; The heat exchange unit is disposed at an intersection area between the air supply passage and the air exhaust passage.

8. The dehumidification device according to claim 7, characterized in that: The heat exchange unit is disposed in the air supply passage and is located at a downstream side of the heat exchange unit.

9. A dehumidification system, characterized in that: include: The dehumidification device according to any one of claims 1 to 8; an outdoor unit connected to the dehumidification device; The outdoor unit includes a second shell, a heat dissipation unit, and a third heat exchanger. The heat dissipation unit and the third heat exchanger are disposed in the second shell, and the third heat exchanger is disposed on the refrigerant flow path.

10. The dehumidification system according to claim 9, characterized in that: The dehumidification device also includes a humidifying unit; The first shell of the dehumidification device includes a first heat exchange shell and a first humidification shell that are interconnected; The heat exchange unit is disposed in the first heat exchange shell, and the first heat exchanger and the second heat exchanger of the heat exchange unit and the humidifying unit are disposed in the first humidifying shell.

11. The dehumidification system according to claim 10, characterized in that: The first heat exchange shell is provided with a first transition air supply port, the first humidification shell is provided with a second transition air supply port, and the first transition air supply port and the second transition air supply port are connected through a pipeline.

12. The dehumidification system according to claim 10, characterized in that: The air inlet is disposed in the first heat exchange shell, and the air supply outlet is disposed in the first humidification shell.

13. The dehumidification system according to claim 9, characterized in that: The refrigerant flow path also includes: The first branch where the second heat exchanger is located and the second branch where the third heat exchanger is located, the first branch and the second branch are arranged in parallel.

14. The dehumidification system according to claim 13, characterized in that: The refrigerant flow path also includes: a main path where the first heat exchanger is located; The main path is provided with a flow control valve.

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