A dehumidifier

Abstract

The application provides a dehumidifier, which comprises a body and a compressor, a condenser, an evaporator and a fan arranged in the body, the body is provided with an air inlet and an air outlet, the evaporator, the condenser and the fan are arranged in sequence along the direction from the air inlet to the air outlet; a bypass air duct is formed above and / or below the condenser, a baffle is arranged in the bypass air duct, and the baffle is configured to rotate under control to adjust the opening size of the bypass air duct. The application has the advantages that the dehumidifier can be freely switched between the temperature-increasing dehumidification mode and the temperature-decreasing dehumidification mode, the dehumidification capacity is ensured when the air outlet temperature changes, the functional diversity of the dehumidifier is improved, the comfort of the user is improved, the use experience of the user is improved, the indoor environment comfort is effectively prevented from being reduced due to the operation of the dehumidifier, and even the energy consumption of other air conditioning equipment is effectively prevented from being increased, and the cost expenditure of the user is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidification and drying, in particular to a dehumidifier. Background Art

[0002] Due to the limited internal space of the existing dehumidifier shell, its evaporator and condenser are mostly arranged in a front-to-back sequence. The supply air first exchanges heat with the evaporator to cool down and dehumidify, and then exchanges heat with the condenser to heat up. This causes the air outlet temperature of the dehumidifier to often be higher than the temperature of its operating environment. Especially when operating in hot and humid seasons, it is easy to affect the user's comfort experience and increase the operating energy consumption of other indoor air conditioning equipment.

[0003] To meet user needs, a dehumidifier is currently available. This dehumidifier utilizes condensed water from the dehumidifier's water tank as a water source, spraying the condenser to reduce the condenser's surface temperature and pressure, thereby lowering the outlet air temperature. However, the outlet air cooling effect of this dehumidifier is limited by the state of the condensed water. If the condensed water supply is insufficient or, after multiple cycles, the condensed water heats up to the point where it has no cooling effect, the cooling effect of the condensed water becomes ineffective, resulting in low reliability. Summary of the Invention

[0004] An object of the present invention is to solve the problem that during operation of the existing dehumidifier, the outlet air temperature is higher than the operating environment temperature due to the inability to adjust the outlet air temperature.

[0005] A further object of the present invention is to compensate for the reduction in heat exchange due to the decrease in condenser ventilation volume when adjusting the outlet air temperature, thereby achieving the goal of lowering the outlet air temperature while ensuring dehumidification efficiency.

[0006] In particular, the present invention provides a dehumidifier comprising a body and a compressor, a condenser, an evaporator and a fan arranged in the body;

[0007] The machine body has an air inlet and an air outlet, and the evaporator, condenser and fan are arranged in sequence from the air inlet to the air outlet;

[0008] A bypass air duct is formed above and / or below the condenser. A windshield is provided in the bypass air duct. The windshield is configured to rotate in a controlled manner to adjust the opening size of the bypass air duct.

[0009] Optionally, the fan is a centrifugal fan, and the air outlet is formed on the top of the body; or

[0010] The fan is an axial flow fan, and the air outlet is formed on the front side of the body.

[0011] Optionally, the dehumidifier further comprises:

[0012] Two heat exchanger tube sheets are located on both sides of the condenser and evaporator.

[0013] Optionally, the height of the condenser is smaller than that of the evaporator, so that a bypass air passage is formed between the top of the condenser and the top wall of the machine body and / or between the bottom of the condenser and the bottom wall of the machine body.

[0014] Optionally, the height ratio of the condenser to the evaporator is 0.6-0.8:1.

[0015] Optionally, the windshield is connected to a motor, and the motor is configured to controllably drive the windshield to rotate back and forth along the air inlet direction of the machine body.

[0016] Optionally, a water soaking pipe is provided between the condenser and the evaporator, and the water soaking pipe is immersed in the water receiving tray of the dehumidifier.

[0017] Optionally, the dehumidifier further comprises:

[0018] The flow path switching valve group is configured to control the refrigerant flowing out of the condenser to flow through the water soaking pipe first and then into the evaporator, or to control the refrigerant flowing out of the condenser to flow directly into the evaporator.

[0019] Optionally, a first flow path is provided between the outlet of the condenser and the inlet of the water soaking pipe, a second flow path is provided between the outlet of the water soaking pipe and the inlet of the evaporator, and a third flow path is provided between the first flow path and the second flow path;

[0020] The flow path switching valve group includes a regulating valve and a one-way valve. The regulating valve is arranged at the connection between the first flow path and the third flow path, and the one-way valve is arranged upstream of the connection between the second flow path and the third flow path.

[0021] Optionally, a throttling device is provided downstream of the connection between the second flow path and the third flow path.

[0022] The dehumidifier of the present invention has a bypass air duct formed above and / or below the condenser, and a windshield is provided in the bypass air duct, and the windshield can adjust the opening size of the bypass air duct. During the dehumidification operation, when the windshield is in the open state, the air flow after cooling and dehumidification by the evaporator will be divided into two parts, one part flows through the condenser for heat exchange and temperature rise, and the other part flows through the bypass air duct, does not exchange heat with the condenser, and maintains a low temperature state, ultimately reducing the proportion of hot air in the air flow blown out by the dehumidifier and lowering the outlet air temperature. In this way, the outlet air temperature of the dehumidifier can be adjusted relatively easily by adjusting the opening size of the windshield, making the dehumidifier also applicable in hot and humid seasons, greatly improving the user's dehumidification experience.

[0023] Furthermore, when the dehumidifier of the present invention is in the cooling and dehumidification mode, since the opening of the windshield is greater than 0, the bypass ventilation volume is greater than 0, and the air supply volume of the dehumidifier is fixed, the ventilation volume of the condenser is reduced compared to when the windshield opening is 0, and the heat dissipation of the condenser is reduced accordingly, and the dehumidification efficiency of the dehumidifier is reduced. By adding a water soaking pipe between the condenser and the evaporator, and immersing the water soaking pipe in the water receiving tray of the dehumidifier, when the cooling and dehumidification mode is executed, the refrigerant flowing out of the condenser can first flow through the water soaking pipe and then flow into the evaporator. The condensed water in the water receiving tray is used to water-cool the refrigerant in the water soaking pipe, which is used to increase the heat dissipation of the condenser when the ventilation volume is reduced, thereby ensuring the dehumidification efficiency of the dehumidifier.

[0024] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0026] Figure 1 is a longitudinal cross-sectional view of a dehumidifier in a heating and dehumidification mode according to an embodiment of the present invention;

[0027] Figure 2 is a longitudinal cross-sectional view of a dehumidifier in a cooling and dehumidifying mode according to an embodiment of the present invention;

[0028] Figure 3 is a transverse cross-sectional view of a body of a dehumidifier according to one embodiment of the present invention;

[0029] Figure 4 is a diagram showing the operating principle of a dehumidifier according to one embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the refrigerant circulation principle in the heating and dehumidification mode of a dehumidifier according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the refrigerant circulation principle of a dehumidifier in a cooling and dehumidification mode according to an embodiment of the present invention.

[0032] Figure numerals: 10, dehumidifier; 100, body; 101, air inlet; 102, air outlet; 103, bypass air duct; 201, first flow path; 202, second flow path; 203, third flow path; 204, regulating valve; 205, one-way valve; 210, compressor; 220, condenser; 221, water soaking pipe; 230, evaporator; 240, fan; 250, heat exchanger tube plate; 260, water collecting tray; 270, throttling device; 310, wind shield; 320, motor. DETAILED DESCRIPTION

[0033] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] The dehumidifier 10 generally includes a body 100, within which a compressor 210, a condenser 220, an evaporator 230, and a fan 240 are disposed. The body 100 has an air inlet 101 and an air outlet 102, and the evaporator 230, condenser 220, and fan 240 are arranged in sequence from the air inlet 101 to the air outlet 102.

[0035] During dehumidification operation, the refrigerant discharged from compressor 210 first dissipates heat in condenser 220, then absorbs heat in evaporator 230, and finally flows back to compressor 210. At this time, the surface temperature of evaporator 230 is lower than the ambient temperature, while the surface temperature of condenser 220 is higher than the ambient temperature. Under the action of fan 240, the temperature of the airflow decreases as it passes through evaporator 230, and then rises to a temperature slightly higher than the ambient temperature as it passes through condenser 220 before being discharged.

[0036] As mentioned above, the air outlet temperature of the dehumidifier 10 is often higher than the ambient temperature, especially when it is operated in hot and humid seasons, which can easily affect the user's comfort experience and may even cause an increase in the operating energy consumption of other indoor air conditioning equipment, thereby increasing the user's cooling costs.

[0037] To solve the above problems, the present invention sets a bypass air duct 103 above the condenser 220 and sets a windshield 310 in the bypass air duct 103. The windshield 310 is used to adjust the opening size of the bypass air duct 103 to adjust the outlet air temperature.

[0038] Generally speaking, the condenser 220 and evaporator 230 of a conventional dehumidifier 10 are substantially the same height. However, in the dehumidifier 10 of the present invention, the condenser 220 is shorter than the evaporator 230. Thus, when the condenser 220 and the evaporator 230 are installed at the same level, the bypass air duct 103 described above is formed between the top of the condenser 220 and the top wall of the dehumidifier body 100.

[0039] Figure 1 is a longitudinal cross-sectional view of a dehumidifier 10 in a heating and dehumidifying mode according to an embodiment of the present invention. Figure 2 is a longitudinal cross-sectional view of a dehumidifier 10 in a cooling and dehumidifying mode according to an embodiment of the present invention, wherein: Figure 1 The wind deflector 310 is shown in a closed state. Figure 2 The wind deflector 310 is shown in a fully opened state.

[0040] Reference Figure 1 and Figure 2 During the dehumidification operation, when the wind shield 310 is in the open state, the air flow after cooling and dehumidification by the evaporator 230 will be divided into two parts, one part flows through the condenser 220 for heat exchange and temperature rise, and the other part flows through the bypass air duct 103 without exchanging heat with the condenser 220 and maintaining a low temperature state.

[0041] Thus, when the dehumidifier 10 is operating in the heating and dehumidification mode, the opening of the windshield 310 can be controlled to 0. When the dehumidifier 10 is operating in the cooling and dehumidification mode, the opening of the windshield 310 can be appropriately adjusted based on the difference between the actual outlet air temperature and the ambient temperature under different operating conditions. Specifically, when the difference is large, the opening of the windshield 310 is increased; when the difference is small, the opening of the windshield 310 is decreased.

[0042] It should be noted that in order to form a bypass air duct with a more reasonable space, the present invention can limit the height ratio of the condenser 220 to the evaporator 230 to 0.6-0.8:1 on the premise that the heat exchange area of ​​the condenser 220 is sufficient during the heating and dehumidification operation.

[0043] It should be noted that the above embodiments are all based on the assumption that the bypass air duct 103 is located above the condenser 220. In other embodiments, the condenser 220 may be raised to a certain height so that the top of the condenser 220 is flush with the top of the evaporator 230, thereby forming the bypass air duct 103 below the condenser 220. Alternatively, the condenser 220 may be appropriately raised to a certain height so that the bypass air duct 103 is formed above and below the condenser 220, that is, an upper bypass air duct 103 is formed between the top of the condenser 220 and the top wall of the housing 100, and a lower bypass air duct 103 is formed between the bottom of the condenser 220 and the bottom wall of the housing 100.

[0044] In an optional embodiment of the present invention, the fan 240 can be a centrifugal fan 240, the air inlet 101 can be formed on the rear side of the body 100, and the air outlet 102 can be formed on the top of the body 100, that is, a side inlet and top outlet air supply method is adopted.

[0045] In another optional embodiment of the present invention, the fan 240 can also be an axial flow fan 240, the air inlet 101 can be formed on the rear side of the body 100, and the air outlet 102 can be formed on the front side of the body 100, that is, a side-inlet-side-outlet air supply method is adopted.

[0046] In this way, whether a centrifugal fan 240 is used with a side inlet-top outlet air supply method, or an axial flow fan 240 is used with a side inlet-side outlet air supply method, it can be ensured that the proportion of hot air in the air flow blown out by the dehumidifier 10 is reduced, the outlet air temperature is lowered, and the cold air and hot air mixed by the fan 240 have been dehumidified by the evaporator 230, and there is no risk of condensation during the mixing process.

[0047] Figure 3 is a transverse cross-sectional view of a body 100 of a dehumidifier 10 according to an embodiment of the present invention, referring to Figure 3 Dehumidifier 10 also includes two heat exchanger tube sheets 250. These two heat exchanger tube sheets 250 can be rectangular plates of identical size and are positioned on opposite sides of condenser 220 and evaporator 230. These two heat exchanger tube sheets 250 primarily serve as a seal, preventing the airflow, after cooling and dehumidifying through evaporator 230, from bypassing condenser 220 and blowing directly out.

[0048] The size of the wind shield 310 is comparable to the cross-sectional size of the bypass air duct 103 , and the opening of the bypass air duct 103 can be adjusted by rotating or lifting the wind shield 310 .

[0049] In the embodiment of the present invention shown in the accompanying drawings, a windshield 310 adjusts the size of the bypass air duct 103 by rotating. A motor 320 is connected to the upper end of the windshield 310. The motor 320 has a horizontally disposed shaft and is configured to controllably drive the windshield 310 to rotate forward and backward along the airflow direction of the machine body 100. When the windshield 310 is closed, its surface is parallel to the front and rear sidewalls of the machine body 100. When the windshield 310 is fully open, its surface is parallel to the upper and lower sidewalls of the machine body 100.

[0050] Alternatively, the motor 320 can be arranged with its shaft vertically disposed, configured to controllably drive the windshield 310 to rotate along its vertical axis. In this configuration, when the windshield 310 is closed, its surface is parallel to the front and rear sidewalls of the machine body 100. When the windshield 310 is fully open, its surface is parallel to the left and right sidewalls of the machine body 100, i.e., the surface is aligned with the airflow direction.

[0051] In other embodiments, the windshield 310 adjusts the opening of the bypass air duct 103 by raising and lowering. For example, a cylinder is disposed at the top of the machine body 100, with a piston rod extending vertically downward and connected to the upper end of the windshield 310. When the piston rod pulls the windshield 310 upward, the windshield 310 fully opens the bypass air duct 103. When the piston rod pushes the windshield 310 downward, the windshield 310 fully closes the bypass air duct 103. Alternatively, the raising and lowering of the windshield 310 can be achieved by other components with reciprocating motion, such as a linear motor 320.

[0052] Considering that when the dehumidifier 10 executes the cooling and dehumidification mode, the opening of the wind shield 310 is greater than 0, the bypass air volume is greater than 0, and the air supply volume of the dehumidifier 10 is fixed, this will cause the ventilation volume of the condenser 220 to be reduced compared to when the opening of the wind shield 310 is 0, and the heat dissipation of the condenser 220 will be reduced accordingly, and the dehumidification efficiency of the dehumidifier 10 will decrease.

[0053] To this end, the dehumidifier 10 of the present invention is additionally provided with a water immersion pipe 221 , which is used to increase the heat dissipation of the condenser 220 when the ventilation volume is reduced, thereby ensuring the dehumidification efficiency of the dehumidifier 10 .

[0054] Figure 4 is an operating principle diagram of a dehumidifier 10 according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the refrigerant circulation principle of the dehumidifier 10 in the heating and dehumidification mode according to an embodiment of the present invention. Figure 6 1 is a schematic diagram of a refrigerant circulation principle in a cooling and dehumidifying mode of a dehumidifier 10 according to an embodiment of the present invention.

[0055] Reference Figures 4 to 6 A water soaking pipe 221 is provided between the condenser 220 and the evaporator 230 of the dehumidifier 10. This pipe is immersed in the water receiving tray 260 of the dehumidifier 10. During cooling and dehumidification mode, the refrigerant flowing out of the condenser 220 first flows through the water soaking pipe 221 before entering the evaporator 230. This condensed water stored in the water receiving tray 260 cools the refrigerant in the water soaking pipe 221, thereby increasing the amount of heat dissipated by the condenser 220 when the ventilation volume is reduced, thereby lowering the outlet air temperature while maintaining dehumidification efficiency.

[0056] It should be noted that the soaking tube 221 can be considered part of the condenser 220, serving as a heat exchange coil placed within the water tray 260 of the dehumidifier 10. By properly designing the drain port connected to the water tray 260, the soaking tube 221 can be submerged in the condensed water, for example, by positioning the drain port adjacent to the upper edge of the sidewall of the water tray 260. Because the condensed water generated by the dehumidifier 10 is lower in temperature than the ambient temperature, it provides excellent heat dissipation for the condenser 220.

[0057] Furthermore, the dehumidifier 10 may also include a flow switching valve group, which can control the refrigerant flowing out of the condenser 220 to flow through the water soaking tube 221 and then into the evaporator 230, or it can control the refrigerant flowing out of the condenser 220 to flow directly into the evaporator 230.

[0058] Thus, when executing the heating and dehumidification mode, the wind shield 310 can be placed in the closed state, the opening degree of the wind shield 310 is 0, the bypass airflow is 0, and the flow path switching valve group is used to control the refrigerant flowing out of the condenser 220 to flow directly into the evaporator 230. When executing the cooling and dehumidification mode, the wind shield 310 can be placed in the open state, the opening degree of the wind shield 310 is greater than 0, the bypass airflow is greater than 0, and the flow path switching valve group is used to control the refrigerant flowing out of the condenser 220 to flow through the water soaking pipe 221 before flowing into the evaporator 230.

[0059] In this way, the dehumidifier 10 can be freely switched between the heating dehumidification mode and the cooling dehumidification mode, ensuring the dehumidification capacity when the air outlet temperature changes, which is conducive to improving the functional diversity of the dehumidifier 10, improving the user's comfort, and improving the user's experience. It can effectively avoid the reduction in indoor environmental comfort due to the operation of the dehumidifier 10, and even the increase in operating energy consumption of other air conditioning equipment, saving users' cost expenditure.

[0060] A first flow path 201 is defined between the outlet of the condenser 220 and the inlet of the water soaking pipe 221 , a second flow path 202 is defined between the outlet of the water soaking pipe 221 and the inlet of the evaporator 230 , and a third flow path 203 is defined between the first and second flow paths 201 and 202 .

[0061] The flow path switching valve group may include a regulating valve 204 and a one-way valve 205. The regulating valve 204 is arranged at the connection between the first flow path 201 and the third flow path 203, and the one-way valve 205 is arranged upstream of the connection between the second flow path 202 and the third flow path 203, that is, at the position of the second flow path 202 adjacent to the outlet of the bubble tube 221.

[0062] Specifically, the regulating valve 204 has three interfaces a, b, and c. Interface a is connected to the outlet of the condenser 220 , interface b is connected to the third flow path 203 , and interface c is connected to the inlet of the soaking pipe 221 .

[0063] A throttling device 270 is provided downstream of the connection between the second flow path 202 and the third flow path 203 (that is, the position of the second flow path 202 adjacent to the inlet of the evaporator 230). The throttling device 270 can be an expansion valve or a capillary tube. The refrigerant passes through the condenser 220 or the water-soaked pipe 221 and flows into the throttling device 270. The throttling device 270 reduces the pressure of the refrigerant flowing into the throttling device 270.

[0064] Reference Figure 5 When the dehumidifier 10 executes the heating and dehumidification mode, the interface a and the interface b of the regulating valve 204 are connected, the one-way valve 205 is closed, and the refrigerant discharged from the compressor 210 passes through the condenser 220, the throttling device 270, and the evaporator 230 in sequence and then flows back to the compressor 210. The total heat dissipation of the condenser 220 is borne only by the air.

[0065] Reference Figure 6 When the dehumidifier 10 is in the cooling and dehumidifying mode, the interface a and the interface c of the regulating valve 204 are connected, the one-way valve 205 is connected, and the refrigerant discharged from the compressor 210 passes through the condenser 220, the water soaking pipe 221, the throttling device 270, and the evaporator 230 in sequence and then flows back to the compressor 210. The total heat dissipation of the condenser 220 is borne by the air and the condensed water.

[0066] It should be noted that the regulating valve 204 in this embodiment is a three-way valve, which realizes the operation switching between the heating and dehumidification mode and the cooling and dehumidification mode by cooperating with the one-way valve 205. The flow direction of the one-way valve 205 is from the water soaking pipe 221 to the throttling device 270. The present invention is not limited to the type of flow path switching valve group, and it can also be other valve component combinations that can realize the control effect described in the present invention.

[0067] According to any one of the above optional embodiments or a combination of multiple optional embodiments, the embodiments of the present invention can achieve the following beneficial effects:

[0068] The dehumidifier 10 of the embodiment of the present invention has a bypass air duct 103 formed above and / or below the condenser 220, and a windshield 310 is provided in the bypass air duct 103. The windshield 310 can adjust the opening size of the bypass air duct 103. During the dehumidification operation, when the windshield 310 is in the open state, the air flow after cooling and dehumidification by the evaporator 230 will be divided into two parts. One part flows through the condenser 220 for heat exchange and temperature rise, and the other part flows through the bypass air duct 103 without heat exchange with the condenser 220, maintaining a low temperature state, and ultimately reducing the proportion of hot air in the air flow blown out by the dehumidifier 10 and lowering the outlet air temperature. In this way, the outlet air temperature of the dehumidifier 10 can be adjusted relatively easily by adjusting the opening size of the windshield 310, making the dehumidifier 10 also applicable in hot and humid seasons, greatly improving the user's dehumidification experience.

[0069] Furthermore, in the dehumidifier 10 of the present embodiment, when operating in cooling and dehumidification mode, the opening of the windshield 310 is greater than zero, the bypass airflow is greater than zero, and the airflow of the dehumidifier 10 is fixed. This results in a reduced airflow to the condenser 220 compared to when the windshield 310 is opened to zero. Consequently, the heat dissipated by the condenser 220 decreases, and the dehumidification efficiency of the dehumidifier 10 decreases. By adding a water soaking pipe 221 between the condenser 220 and the evaporator 230 and immersing the water soaking pipe 221 in the water receiving tray 260 of the dehumidifier 10, the refrigerant flowing out of the condenser 220 in cooling and dehumidification mode flows through the water soaking pipe 221 before entering the evaporator 230. The condensed water in the water receiving tray 260 cools the refrigerant in the water soaking pipe 221, thereby increasing the heat dissipated by the condenser 220 when the airflow is reduced, thereby ensuring the dehumidification efficiency of the dehumidifier 10.

[0070] Those skilled in the art should understand that, unless otherwise specified, the terms used in the embodiments of the present invention to indicate orientation or positional relationships are based on the actual usage status of the dehumidifier 10. These terms are only used to facilitate the description and understanding of the technical solutions of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0071] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0072] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0073] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A dehumidifier, comprising a body and a compressor, a condenser, an evaporator and a fan arranged in the body, characterized in that: The machine body has an air inlet and an air outlet, and the evaporator, the condenser and the fan are arranged in sequence from the air inlet to the air outlet; A bypass air duct is formed above and / or below the condenser, and a windshield is provided in the bypass air duct, and the windshield is configured to rotate in a controlled manner to adjust the opening size of the bypass air duct; A water soaking pipe is provided between the condenser and the evaporator, and the water soaking pipe is immersed in the water receiving tray of the dehumidifier; The dehumidifier also includes: The flow path switching valve group is configured to control the refrigerant flowing out of the condenser to flow through the water soaking pipe first and then into the evaporator, or to control the refrigerant flowing out of the condenser to flow directly into the evaporator.

2. The dehumidifier according to claim 1, wherein: The fan is a centrifugal fan, and the air outlet is formed on the top of the fan body; or The fan is an axial flow fan, and the air outlet is formed on the front side of the fan body.

3. The dehumidifier according to claim 1, further comprising: Two heat exchanger tube sheets are provided on both sides of the condenser and the evaporator.

4. The dehumidifier according to claim 1, wherein: The height of the condenser is smaller than that of the evaporator, so that the bypass air duct is formed between the top of the condenser and the top wall of the machine body and / or between the bottom of the condenser and the bottom wall of the machine body.

5. The dehumidifier according to claim 4, wherein: The height ratio of the condenser to the evaporator is 0.6-0.8:

1. The dehumidifier according to claim 1 , wherein: The windshield is connected to a motor, and the motor is configured to controllably drive the windshield to rotate forward and backward along the air inlet direction of the machine body.

7. The dehumidifier according to claim 1, wherein: A first flow path is defined between the outlet of the condenser and the inlet of the water soaking pipe, a second flow path is defined between the outlet of the water soaking pipe and the inlet of the evaporator, and a third flow path is defined between the first flow path and the second flow path; The flow path switching valve group includes a regulating valve and a one-way valve. The regulating valve is provided at the connection between the first flow path and the third flow path. The one-way valve is provided upstream of the connection between the second flow path and the third flow path.

8. The dehumidifier according to claim 7, wherein: A throttling device is provided downstream of a connection between the second flow path and the third flow path.

Images