Fresh air dehumidification equipment

Abstract

The utility model relates to the technical field of air conditioning equipment, in particular to fresh air dehumidification equipment, and aims to solve the problem that the existing fresh air dehumidification equipment is loud in noise during operation. Therefore, the fresh air dehumidification equipment comprises a shell and a fan, the shell is provided with an air supply duct, an air return duct, a connecting air duct, a bypass air duct, an air supply outlet, an air return inlet and a fresh air inlet, one end of the air supply duct is communicated with the air supply outlet, and one end of the air return duct is communicated with the air return inlet. The two ends of the connecting air duct communicate with the other end of the air supply duct and the other end of the air return duct correspondingly, and the two ends of the bypass air duct communicate with the connecting air duct and the air supply duct correspondingly. Air can reach the air supply outlet through the connecting air duct and the air supply duct and the connecting air duct, the bypass air duct and the air supply duct, so that the ventilation area is increased, air resistance is reduced, the rotating speed of a fan can be reduced, and noise generated when the fresh air dehumidification equipment operates is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, and particularly provides a fresh air dehumidification device. Background Art

[0002] With the improvement of people's living standards, fresh air fans have increasingly become one of the indispensable electrical appliances in people's daily lives. The fresh air fan is connected to the outside through a pipeline, and fresh air is conveyed into the room by a fan, thereby achieving the effect of improving the indoor air quality.

[0003] When the existing fresh air fan is operating, due to the narrow pipeline and purification equipment such as filters installed in the pipeline, the rotation speed of the fan will increase, resulting in a relatively high wind speed of the fresh air, thereby increasing the noise during the operation of the fresh air fan and affecting the user experience.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem of high noise during the operation of the existing fresh air dehumidification device.

[0006] In a first aspect, the utility model provides a fresh air dehumidification device, including a housing and a fan. The housing has a supply air duct, a return air duct, a connecting duct, a bypass duct, a supply air outlet, a return air inlet, and a fresh air inlet. One end of the supply air duct is communicated with the supply air outlet, the other end of the supply air duct is communicated with the fresh air inlet, one end of the return air duct is communicated with the return air inlet, both ends of the connecting duct are respectively communicated with the other end of the supply air duct and the other end of the return air duct, both ends of the bypass duct are respectively communicated with the connecting duct and the supply air duct, and the fan is installed on the supply air outlet.

[0007] In the case of adopting the above technical solution, by setting a bypass duct communicated with the connecting duct and the supply air duct, when the fresh air dehumidification device is operating, the air can reach the supply air outlet through the connecting duct, the supply air duct, and two supply air channels of the connecting duct, the bypass duct, and the supply air duct, thereby increasing the ventilation area, reducing the air resistance, further reducing the rotation speed of the fan, reducing the noise during the operation of the fresh air dehumidification device, and improving the user experience.

[0008] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a return air damper, and the return air damper is installed at the connection between the return air duct and the connecting duct.

[0009] In the case of adopting the above technical solution, the utility model installs a return air damper at the connection of the return air duct and the connection duct. When the fresh air dehumidification device operates in the fresh air mode, the return air damper is closed, so as to prevent the indoor air from entering the supply air duct through the return air duct, and the air blown out from the air supply outlet is all fresh air, improving the fresh air supply efficiency.

[0010] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a fresh air damper, and the fresh air damper is installed on the fresh air inlet.

[0011] In the case of adopting the above technical solution, the utility model installs a fresh air damper on the fresh air inlet. When the fresh air dehumidification device operates in the internal circulation mode, the fresh air damper is closed, thus closing the fresh air inlet. The indoor air enters the room again from the air supply outlet through the return air duct, the bypass air duct and the fresh air duct, and the air is filtered and sterilized by the fresh air dehumidification device, thereby purifying the indoor air.

[0012] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a bypass damper, and the bypass damper is installed in the bypass air duct.

[0013] In the case of adopting the above technical solution, the utility model installs a bypass damper in the bypass air duct. When the fresh air dehumidification device needs to increase the wind speed, closing the bypass damper can close the bypass air duct.

[0014] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a dehumidification device, and the dehumidification device is installed in the supply air duct.

[0015] In the case of adopting the above technical solution, the utility model installs a dehumidification device in the supply air duct. When the fresh air dehumidification device operates in the dehumidification mode, the dehumidification device is turned on, and the air can be dehumidified when passing through the dehumidification device, thereby reducing the humidity of the air and improving the comfort of the indoor environment.

[0016] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a PM2.5 sensor, and the PM2.5 sensor is located between the dehumidification device and the air supply outlet.

[0017] In the case of adopting the above technical solution, the utility model installs a PM2.5 sensor between the dehumidification device and the air supply outlet, which can detect the PM2.5 concentration of the air in the supply air duct and transmit it to the controller of the fresh air dehumidification device by telecommunication. Thus, the controller can control the filter of the fresh air dehumidification device to filter out the PM2.5 in the air, so that the PM2.5 concentration of the air sent into the room is within an appropriate range, thereby improving the user experience.

[0018] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a first temperature sensor located upstream of the dehumidification device along the air flow direction; and / or the fresh air dehumidification device further includes a first humidity sensor located upstream of the dehumidification device along the air flow direction; and / or the fresh air dehumidification device further includes a second temperature sensor located downstream of the dehumidification device along the air flow direction; and / or the fresh air dehumidification device further includes a second humidity sensor located downstream of the dehumidification device along the air flow direction.

[0019] In the case of adopting the above technical solution, the present utility model can detect the air temperature upstream of the dehumidification device by setting a first temperature sensor upstream of the dehumidification device along the air flow direction, and then control the dehumidification device to heat the air so that the temperature of the air blown into the room is at a suitable temperature; by setting a first humidity sensor upstream of the dehumidification device along the air flow direction, the air humidity upstream of the dehumidification device can be detected, and then control the dehumidification device to dehumidify so that the humidity of the air blown into the room is at a suitable temperature; by setting a second temperature sensor downstream of the dehumidification device along the air flow direction, the air temperature downstream of the dehumidification device can be detected and it can be judged whether the air temperature is at a suitable temperature, and then control the dehumidification device to heat the air so that the temperature of the air blown into the room is at a suitable temperature; by setting a second humidity sensor downstream of the dehumidification device along the air flow direction, the air humidity downstream of the dehumidification device can be detected and it can be judged whether the air humidity is at a suitable humidity, and then control the dehumidification device to dehumidify so that the humidity of the air blown into the room is at a suitable humidity.

[0020] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a filter screen installed in the connecting air duct.

[0021] In the case of adopting the above technical solution, the present utility model can filter out impurities such as dust and PM2.5 in the air in the connecting air duct by installing a filter screen in the connecting air duct, thus ensuring the quality of the air blown into the room.

[0022] In the preferred technical solution of the above fresh air dehumidification device, the fresh air dehumidification device further includes a sterilization module installed on the air outlet.

[0023] In the case of adopting the above technical solution, the present utility model can effectively kill bacteria in the air blown into the room by installing a sterilization module on the air outlet, thus ensuring the quality of the air blown into the room.

[0024] In the preferred technical solution of the above fresh air dehumidification device, the sterilization module is an ion sterilization module.

[0025] In the case of adopting the above technical solution, the utility model adopts an ion sterilization module, which is non-toxic and pollution-free and has a high sterilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a schematic structural diagram of the fresh air dehumidification device of the present utility model;

[0028] Figure 2 is a schematic structural diagram of the fresh air dehumidification device of the present utility model in the internal circulation mode;

[0029] Figure 3 is a schematic structural diagram of the fresh air dehumidification device of the present utility model in the fresh air mode;

[0030] Figure 4 is a schematic structural diagram of the fresh air dehumidification device of the present utility model in the internal circulation dehumidification mode;

[0031] Figure 5 is a schematic structural diagram of the fresh air dehumidification device of the present utility model in the fresh air dehumidification mode.

[0032] LIST OF REFERENCE NUMERALS:

[0033] 1. Housing; 11. Air supply duct; 12. Return air duct; 13. Connecting duct; 14. By-pass duct; 15. Air supply outlet; 16. Return air inlet; 17. Fresh air inlet;

[0034] 21. Return air valve; 22. Fresh air valve; 23. By-pass valve;

[0035] 3. Dehumidification device;

[0036] 4. PM2.5 sensor;

[0037] 51. First temperature sensor; 52. Second temperature sensor;

[0038] 61. First humidity sensor; 62. Second humidity sensor;

[0039] 7. Filter screen;

[0040] 8. Sterilization module;

[0041] 9. Fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0043] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "inner", "outer", "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "connected", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] Based on the problem of high noise during the operation of the existing fresh air dehumidification equipment pointed out in the background technology, the present utility model provides a fresh air dehumidification equipment. It is intended to increase the ventilation area and reduce the wind resistance by providing a bypass air duct communicating with the connecting air duct and the air supply air duct. When the fresh air dehumidification equipment is operating, the air can reach the air supply outlet through the connecting air duct and the air supply air duct, as well as two air supply channels of the connecting air duct, the bypass air duct and the air supply air duct. Thereby, the rotational speed of the fan can be reduced, the noise during the operation of the fresh air dehumidification equipment can be reduced, and the user experience can be improved.

[0046] Specifically, as Figure 1 shown, the fresh air dehumidification equipment of the present utility model includes a housing 1 and a fan 9. The housing 1 has an air supply air duct 11, a return air duct 12, a connecting air duct 13, a bypass air duct 14, an air supply outlet 15, a return air inlet 16, and a fresh air inlet 17. One end of the air supply air duct 11 communicates with the air supply outlet 15, one end of the return air duct 12 communicates with the return air inlet 16, both ends of the connecting air duct 13 communicate with the other end of the air supply air duct 11 and the other end of the return air duct 12 respectively, both ends of the bypass air duct 14 communicate with the connecting air duct 13 and the air supply air duct 11 respectively, and the fan 9 is installed on the air supply outlet 15.

[0047] Exemplarily, as Figure 1As shown in the figure, the housing 1 of the fresh air dehumidification device of the present utility model is rectangular. The return air duct 12 is arranged at the rear end of the housing 1 in the left-right direction, and the supply air duct 11 is arranged at the front end of the housing 1 in the left-right direction. The return air duct 12 and the supply air duct 11 are arranged in parallel. The right end of the return air duct 12 is communicated with the return air outlet 16, the right end of the supply air duct 11 is communicated with the supply air outlet 15, the left end of the supply air duct 11 is communicated with the fresh air inlet 17, the front end and the rear end of the connecting duct 13 are respectively communicated with the left end of the supply air duct 11 and the left end of the return air duct 12. The bypass air duct 14 is arranged in parallel with the supply air duct 11 in the left-right direction. The left end and the right end of the bypass air duct 14 are respectively communicated with the connecting duct 13 and the supply air duct 11. The fan 9 is installed on the supply air outlet 15. By providing the bypass air duct 14 communicated with the connecting duct 13 and the supply air duct 11, when the fresh air dehumidification device is operating, the air can reach the supply air outlet 15 through two air supply channels, namely the connecting duct 13 and the supply air duct 11, and the connecting duct 13, the bypass air duct 14 and the supply air duct 11, thereby increasing the ventilation area, reducing the air resistance, and further being able to reduce the rotation speed of the fan 9, reducing the noise during the operation of the fresh air dehumidification device, and improving the user experience.

[0048] It should be noted that an outdoor return air inlet can also be provided at the left end of the return air duct 12 of the fresh air dehumidification device of the present utility model. The fresh air dehumidification device can be connected in series with another two-way fresh air fan through the outdoor return air inlet and the fresh air inlet 17, thus giving users more choices. Such flexible adjustment and change do not deviate from the principle and scope of the present utility model and should be limited within the protection scope of the present utility model.

[0049] It should also be noted that the present utility model can also be provided with a return air valve in the return air duct 12. When the fresh air dehumidification device operates in the fresh air mode, the air volume passing through the return air duct 12 can be controlled through the return air valve, so as to control the fresh air volume entering the room. Such flexible adjustment and change do not deviate from the principle and scope of the present utility model and should be limited within the protection scope of the present utility model.

[0050] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a return air valve 21, and the return air valve 21 is installed at the connection between the return air duct 12 and the connecting duct 13.

[0051] Exemplarily, as Figure 1 shown, the return air valve 21 of the present utility model is installed at the connection between the leftmost end of the return air duct 12 and the connecting duct 13. By installing the return air valve 21, when the fresh air dehumidification device operates in the fresh air mode, the return air valve 21 is closed, so as to prevent the indoor air from entering the supply air duct 11 through the return air duct 12, making the air blown out from the supply air outlet 15 all fresh air, and improving the fresh air supply efficiency.

[0052] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a fresh air damper 22, and the fresh air damper 22 is installed on the fresh air inlet 17.

[0053] Exemplarily, as Figure 1 shown, the fresh air damper 22 of the present utility model is installed on the fresh air inlet 17. By installing the fresh air damper 22, when the fresh air dehumidification device operates in the internal circulation mode, the fresh air damper 22 is closed, thereby closing the fresh air inlet 17. The indoor air is blown into the room again through the return air duct 12, the bypass air duct 14 and the supply air duct 11 by the supply air outlet 15. The air is filtered and sterilized by the fresh air dehumidification device, thus purifying the indoor air.

[0054] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a bypass damper 23, and the bypass damper 23 is installed in the bypass air duct 14.

[0055] Exemplarily, as Figure 1 shown, the bypass damper 23 of the present utility model is installed in the bypass air duct 14 and is installed near the left end of the bypass air duct 14. By installing the bypass damper 23, the bypass air duct 14 can be closed by closing the bypass damper 23, so that the air flow does not pass through the bypass air duct 14, thus giving users more choices.

[0056] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a dehumidification device 3, and the dehumidification device 3 is installed in the supply air duct 11.

[0057] Exemplarily, as Figure 1 shown, the dehumidification device 3 of the present utility model includes a compressor, a condenser and an evaporator. The condenser and the evaporator are installed in the supply air duct 11. The condenser is used to heat the air flowing through the supply air duct 11, and the evaporator is used to dehumidify the air flowing through the supply air duct 11. By installing the dehumidification device 3, the fresh air dehumidification device has the function of constant temperature dehumidification.

[0058] It should be noted that a water receiving tray is further provided below the evaporator of the present utility model to hold the condensed water generated by the evaporator. A water level sensor is provided in the water receiving tray to detect the water level in the water receiving tray. A drainage pump is also provided in the water receiving tray. When the water level sensor detects that the water in the water receiving tray is close to the limit water level, the controller of the fresh air dehumidification device controls the drainage pump to drain water.

[0059] It should also be noted that an exhaust temperature sensor is installed at the outlet of the compressor, which can detect the exhaust temperature of the compressor. When the temperature is too high, the power supply of the compressor can be cut off to protect the compressor. At the position of the compressor exhaust pipe, a high-pressure switch is installed, and at the position of the compressor return pipe, a low-pressure switch is installed. When an abnormality or air leakage occurs in the refrigerant system, the high-pressure switch or the low-pressure switch will be triggered to alarm, thereby cutting off the power supply of the compressor to protect the compressor.

[0060] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present invention further includes a PM2.5 sensor 4, and the PM2.5 sensor 4 is located between the dehumidification device 3 and the air supply port 15.

[0061] Exemplarily, as Figure 1 shown, the PM2.5 sensor 4 of the present invention is located between the dehumidification device 3 and the air supply port 15. By installing the PM2.5 sensor 4, the PM2.5 concentration of the air in the air supply duct 11 can be detected and transmitted to the controller of the fresh air dehumidification device by telecommunication, so that the controller can control the filter of the fresh air dehumidification device to filter out the PM2.5 in the air, making the PM2.5 concentration of the air sent into the room within an appropriate range.

[0062] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present invention further includes a first temperature sensor 51, and the first temperature sensor 51 is located upstream of the dehumidification device 3 along the flow direction of the air flow.

[0063] Exemplarily, as Figure 1 shown, by installing the first temperature sensor 51 in the present invention, the air temperature upstream of the dehumidification device 3 can be detected, and then the dehumidification device 3 can be controlled to heat the air so that the temperature of the air blown into the room is within a suitable temperature range.

[0064] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present invention further includes a first humidity sensor 61, and the first humidity sensor 61 is located upstream of the dehumidification device 3 along the flow direction of the air flow.

[0065] Exemplarily, as Figure 1 shown, by installing the first humidity sensor 61 in the present invention, the air humidity upstream of the dehumidification device 3 can be detected, and then the dehumidification device 3 can be controlled to dehumidify so that the humidity of the air blown into the room is within a suitable humidity range.

[0066] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present invention further includes a second temperature sensor 52, and the second temperature sensor 52 is located downstream of the dehumidification device 3 along the flow direction of the air flow.

[0067] Exemplarily, as Figure 1 shown, the present utility model can detect the air temperature downstream of the dehumidifying device 3 by installing the second temperature sensor 52, and determine whether the air temperature is within a suitable temperature range. Furthermore, by controlling the dehumidifying device 3 to heat the air, the temperature of the air blown into the room can be within a suitable temperature range.

[0068] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a second humidity sensor 62, and the second humidity sensor 62 is located downstream of the dehumidifying device 3 along the air flow direction.

[0069] Exemplarily, as Figure 1 shown, the present utility model can detect the air humidity downstream of the dehumidifying device 3 by installing the second humidity sensor 62, and determine whether the air humidity is within a suitable humidity range. Furthermore, by controlling the dehumidifying device 3 to dehumidify, the humidity of the air blown into the room can be within a suitable humidity range.

[0070] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a filter screen 7, and the filter screen 7 is installed in the connecting air duct 13.

[0071] Exemplarily, as Figure 1 shown, the filter screen 7 of the present utility model is installed in the connecting air duct 13 and extends to the connection between the connecting air duct 13 and the air supply duct 11, so as to filter out impurities such as dust and PM2.5 in the air flowing through the connecting air duct 13 and the air supply duct 11, and ensure the quality of the air blown into the room.

[0072] Preferably, as Figure 1 shown, the fresh air dehumidification device of the present utility model further includes a sterilization module 8, and the sterilization module 8 is installed on the air supply port 15.

[0073] That is to say, the sterilization module 8 is installed on the air supply port 15. Such a setting enables the sterilized air to be directly sent to the room by the blower 9, improving the air sterilization effect.

[0074] Preferably, the sterilization module 8 of the present utility model is an ion sterilization module.

[0075] By adopting the ion sterilization module, the sterilizing ions can be directly sent to the room by the blower 9, reducing the ion consumption and improving the air sterilization effect.

[0076] The working states of the fresh air dehumidification device in different operating modes are as follows:

[0077] Internal circulation mode:

[0078] As Figure 2As shown in the figure, open the return air damper 21 and the bypass air damper 23, close the fresh air damper 22, and turn off the dehumidification device 3. Indoor air enters the return air duct 12 through the return air inlet 16, is filtered by the air filter 7, and then reaches the air supply outlet 15 through two air supply paths, namely the air supply duct 11 and the bypass air duct 14 and the air supply duct 11, and the purified and sterilized air is sent into the room.

[0079] Fresh air mode:

[0080] As Figure 3 shown in the figure, open the fresh air damper 22 and the bypass air damper 23, close the return air damper 21, and turn off the dehumidification device 3. Outdoor air enters the connecting duct 13 through the fresh air inlet 17, is filtered by the air filter 7, and then reaches the air supply outlet 15 through two air supply paths, namely the air supply duct 11 and the bypass air duct 14 and the air supply duct 11, and the purified and sterilized fresh air is sent into the room.

[0081] Internal circulation dehumidification mode:

[0082] As Figure 4 shown in the figure, open the return air damper 21, close the fresh air damper 22 and the bypass air damper 23, turn on the dehumidification device 3. Indoor air enters the return air duct 12 through the return air inlet 16, is filtered by the air filter 7, the air is dehumidified and heated in the air supply duct 11, and then reaches the air supply outlet 15 through the air supply duct 11, and the purified and sterilized air is sent into the room.

[0083] Fresh air dehumidification mode:

[0084] As Figure 5 shown in the figure, open the fresh air damper 22, close the return air damper 21 and the bypass air damper 23, turn on the dehumidification device 3. Outdoor air enters the connecting duct 13 through the fresh air inlet 17, is filtered by the air filter 7, the fresh air is dehumidified and heated in the air supply duct 11, and then reaches the air supply outlet 15 through the air supply duct 11, and the purified and sterilized fresh air is sent into the room.

[0085] It should be noted that the fresh air dehumidification equipment of the present utility model can be used in series with a two-way flow fresh air fan. The existing two-way flow fresh air fan is provided with an indoor air supply outlet, an indoor return air inlet, an outdoor fresh air inlet, and an outdoor return air inlet. The indoor air supply outlet is connected to the outdoor fresh air inlet through a fresh air duct, and the indoor return air inlet is connected to the outdoor return air inlet through a return air duct. A heat exchange core is provided between the fresh air duct and the return air duct, which can exchange heat between the discharged air and the fresh air blown into the room, so as to achieve the effect of total heat dehumidification.

[0086] The fresh air dehumidification device of the present utility model also needs to be provided with a fresh air return air opening communicating with the return air duct 13. The fresh air return air opening of the fresh air dehumidification device is communicated with the indoor return air opening of the two-way flow fresh air fan, and the fresh air opening 17 of the fresh air dehumidification device is communicated with the indoor air supply opening of the two-way flow fresh air fan.

[0087] The return air valve 21 in the return air duct 12 can be set as a reversing valve at this time, that is, the return air duct 12 is communicated with the connecting duct 13. After reversing, the return air duct 12 is communicated with the fresh air return air opening of the fresh air dehumidification device, that is, communicated with the indoor return air opening of the two-way flow fresh air fan.

[0088] When the user selects the total heat dehumidification mode, the fresh air valve 22 is opened, the bypass air valve 23 is closed, and the return air valve 21 is reversed, so that the return air duct 12 is communicated with the indoor return air opening of the two-way flow fresh air fan. The dehumidification device 3 is turned on. The outdoor air enters the fresh air duct through the outdoor fresh air opening of the two-way flow fresh air fan, and then enters the fresh air opening 17 of the fresh air dehumidification device through the indoor air supply opening of the two-way flow fresh air fan. It is filtered by the filter screen 7 in sequence, dehumidified and heated by the dehumidification device 3, and then reaches the air supply opening 15 through the air supply duct 11, and the purified and sterilized fresh air is sent into the room. The dirty air in the room enters the return air duct 12 through the return air opening 16 of the fresh air dehumidification device, enters the indoor return air opening of the two-way flow fresh air fan through the fresh air return air opening of the fresh air dehumidification device, and then is sent to the outside through the outdoor return air opening through the return air duct of the two-way flow fresh air fan. The fresh air duct and the return air duct perform heat exchange through the heat exchange core body, so as to achieve the effect of total heat dehumidification.

[0089] It should be noted that when the user is in the fresh air dehumidification mode, the return air valve 21 can also be selected to be switched, that is, the return air duct 12 is communicated with the connecting duct 13. At this time, the indoor air enters the return air duct 12 through the return air opening 16, enters the air supply duct 11 through the connecting duct 13 and is mixed with the fresh air, is filtered by the filter screen 7, the fresh air is dehumidified and heated in the air supply duct 11, and then reaches the air supply opening 15 through the air supply duct 11, and the purified and sterilized fresh air is sent into the room. In this mode, while sending fresh air into the room, the indoor air quality can also be purified.

[0090] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0091] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A fresh air dehumidification device, characterized in that: The invention comprises a shell and a fan, the shell having a supply air duct, a return air duct, a connecting air duct, a bypass air duct, an air supply port, a return air port and a fresh air port, one end of the supply air duct is connected with the supply air port, the other end of the supply air duct is connected with the fresh air port, one end of the return air duct is connected with the return air port, two ends of the connecting air duct are respectively connected with the other end of the supply air duct and the other end of the return air duct, two ends of the bypass air duct are respectively connected with the connecting air duct and the supply air duct, and the fan is mounted on the air supply port.

2. The fresh air dehumidification equipment according to claim 1, characterized in that: The fresh air dehumidification equipment also includes a return air valve, which is installed at the connection between the return air duct and the connecting air duct.

3. The fresh air dehumidification equipment according to claim 1, characterized in that: The fresh air dehumidification equipment also includes a fresh air valve, which is installed on the fresh air outlet.

4. The fresh air dehumidification equipment according to claim 1, characterized in that: The fresh air dehumidification equipment also includes a bypass air valve, which is installed in the bypass air duct.

5. The fresh air dehumidification equipment according to claim 1, characterized in that: The fresh air dehumidification equipment also includes a dehumidification device, which is installed in the air supply duct.

6. The fresh air dehumidification equipment according to claim 5, characterized in that: The fresh air dehumidification equipment also includes a PM2.5 sensor, which is located between the dehumidification device and the air outlet.

7. The fresh air dehumidification equipment according to claim 5, characterized in that: The fresh air dehumidification equipment further includes a first temperature sensor, which is located upstream of the dehumidification device along the flow direction of the airflow; and / or The fresh air dehumidification equipment further includes a first humidity sensor, which is located upstream of the dehumidification device along the flow direction of the airflow; and / or The fresh air dehumidification device further includes a second temperature sensor, which is located downstream of the dehumidification device along the flow direction of the airflow; and / or The fresh air dehumidification equipment also includes a second humidity sensor, which is located downstream of the dehumidification device along the flow direction of the airflow.

8. The fresh air dehumidification equipment according to claim 1, characterized in that: The fresh air dehumidification equipment also includes a filter screen, which is installed in the connecting air duct.

9. The fresh air dehumidification equipment according to any one of claims 1 to 8, characterized in that: The fresh air dehumidification equipment also includes a sterilization module, and the sterilization module is installed on the air supply outlet.

10. The fresh air dehumidification equipment according to claim 9, characterized in that: The sterilization module is an ion sterilization module.

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