CN219934130U

CN219934130U - Fresh air dehumidifier

Info

Publication number: CN219934130U
Application number: CN202320652861.2U
Authority: CN
Inventors: 陈遵荣; 蒙修仁; 雷朋飞; 张利
Original assignee: Guangzhou Fendi Huanyou Technology Co ltd; Guangdong PHNIX Eco Energy Solution Ltd
Current assignee: Guangzhou Fendi Huanyou Technology Co ltd; Guangdong PHNIX Eco Energy Solution Ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-10-31
Anticipated expiration: 2033-03-28

Abstract

The utility model provides a fresh air dehumidifier which comprises a shell, a mounting piece, an exhaust fan, a heat exchanger, an evaporator and an air supply fan, wherein the shell is provided with a first fresh air inlet, a first fresh air outlet, a first air return opening and a first air outlet; a fresh air duct is arranged between the first fresh air inlet and the first fresh air outlet, and a return air duct is arranged between the first return air inlet and the first exhaust outlet; the heat exchanger, the evaporator and the air supply fan are sequentially arranged in the fresh air duct along the direction from the first fresh air inlet to the first fresh air outlet; the heat exchanger and the exhaust fan are sequentially arranged in the return air duct along the direction from the first return air opening to the first exhaust opening; the mounting sets up in the shell, is provided with in the mounting and is used for installing heat exchanger's first installation position, is used for installing the second installation position of evaporimeter, is used for installing the third installation position of air supply fan and is used for installing the fourth installation position of air exhaust fan, and it has made things convenient for the equipment of new fan through the mounting.

Description

Fresh air dehumidifier

Technical Field

The utility model relates to the technical field of fresh air dehumidifiers, in particular to a fresh air dehumidifier.

Background

Fresh air dehumidifier is the equipment that exchanges and dehumidifies indoor air simultaneously, and its inside often is provided with heat exchanger, evaporimeter, air supply fan and fan of airing exhaust, during operation: the indoor return air enters the fresh air dehumidifier through the return air inlet of the fresh air dehumidifier, outdoor fresh air enters the fresh air dehumidifier through the fresh air inlet, the fresh air entering the fresh air dehumidifier and the return air are subjected to heat exchange and humidity exchange through the heat exchanger, the fresh air after heat exchange flows through the evaporator and then enters the room through the fresh air outlet of the fresh air dehumidifier under the action of the air supply fan, and the return air after heat exchange is sent outdoors through the air outlet of the fresh air dehumidifier under the action of the air exhaust fan.

Because the inside of new trend dehumidifier is provided with a plurality of important parts such as heat exchanger, evaporimeter, air supply fan and exhaust fan, when assembling the new trend dehumidifier, often install every part respectively in the shell of new trend dehumidifier alone, then link together a plurality of parts through the pipeline, but because the mounted position of every part in the new trend dehumidifier is definite, and the installation space in the shell is fixed, consequently, when the mounted position of arbitrary part appears the deviation, often need reinstallation other parts, it has increased the equipment degree of difficulty of new trend dehumidifier.

Disclosure of Invention

Based on the above, the utility model aims to provide a fresh air dehumidifier which has the advantage of convenient assembly.

The technical scheme adopted by the utility model comprises the following specific contents:

the fresh air dehumidifier comprises a shell, a mounting piece, an exhaust fan, a heat exchanger, an evaporator and an air supply fan,

the shell is provided with a first fresh air inlet, a first fresh air outlet, a first air return port and a first air outlet; a fresh air duct is arranged between the first fresh air inlet and the first fresh air outlet, and a return air duct is arranged between the first return air inlet and the first exhaust outlet; the heat exchanger, the evaporator and the air supply fan are sequentially arranged in the fresh air duct along the direction from the first fresh air inlet to the first fresh air outlet; the heat exchanger and the exhaust fan are sequentially arranged in the return air duct along the direction from the first return air opening to the first exhaust opening;

the mounting piece is arranged in the shell, and a first mounting position for mounting the heat exchanger, a second mounting position for mounting the evaporator, a third mounting position for mounting the air supply fan and a fourth mounting position for mounting the air exhaust fan are arranged in the mounting piece.

Further, the shell comprises a main shell body, a left side plate connected to the left side of the main shell body, a right side plate connected to the right side of the main shell body and a top plate connected to the top of the main shell body; the main shell comprises a first panel and two second panels, and the two second panels are respectively and vertically connected to the front side and the rear side of the first panel; a folded edge is arranged on one side, close to the top plate, of the second panel, is parallel to the first panel and abuts against the top of the mounting piece;

the first fresh air inlet and the first exhaust outlet are sequentially arranged on the left side plate along the direction from the front side to the rear side; the first air return opening is arranged on the second panel positioned at the front side; the first fresh air outlet is arranged on the right side plate.

Further, the heat exchanger slides up and down along a first guide within the first mounting location; the first guide piece comprises at least one first sliding groove which is in sliding fit with the heat exchanger, and the first sliding groove extends along the up-down direction of the first installation position.

Further, a first access hole is formed in the bottom of the first installation position, a second access hole used for exposing the first access hole is formed in the first panel, and a first access cover is arranged on the second access hole.

Further, a third access hole is formed in the bottom of the third installation position, a fourth access hole used for exposing the third access hole is formed in the first panel, and a second access cover is arranged on the fourth access hole.

Further, a fifth access hole is formed in the bottom of the fourth installation position, a sixth access hole for exposing the fifth access hole is formed in the first panel, and a third access cover is arranged on the sixth access hole.

Further, the fresh air dehumidifier further comprises a fresh air filter screen and a return air filter screen, wherein the fresh air filter screen is arranged in the fresh air duct and is positioned between the first fresh air inlet and the heat exchanger; the return air filter screen is arranged in the return air duct and is positioned between the first return air opening and the heat exchanger.

Further, a first filter screen installation position for installing the fresh air filter screen is arranged between the first fresh air inlet and the first installation position, a seventh access hole is formed in the bottom of the first filter screen installation position, an eighth access hole for exposing the seventh access hole is formed in the first panel, and a fourth access cover is arranged on the eighth access hole;

the return air duct is in first return air mouth with be provided with between the first installation position be used for the installation the second filter screen installation position of return air filter screen, the first ninth access hole that is provided with of second filter screen installation position, be provided with on the first panel and be used for exposing the tenth access hole of ninth access hole, be provided with the fifth access cover on the tenth access hole.

Further, the fresh air filter screen slides up and down in the first filter screen mounting position through a second guide piece, the second guide piece comprises at least one second chute which is in sliding fit with one end of the fresh air filter screen, and the second chute extends along the up and down direction of the first filter screen mounting position;

the return air filter screen slides up and down in the second filter screen installation position through the third guide, the third guide piece include at least one with the one end sliding fit's of return air filter screen third spout, the third spout is followed the upper and lower direction of second filter screen installation position extends.

Further, the fresh air dehumidifier also comprises a controller connected with the shell, and the exhaust fan, the heat exchanger, the evaporator and the air supply fan are all connected with the controller through wires; the top of installed part is provided with a plurality of constant head tanks, the constant head tank is used for the joint a plurality of electric wire.

Compared with the prior art, the utility model has the beneficial effects that:

1. the first installation position for installing the heat exchanger, the second installation position for installing the evaporator, the third installation position for installing the air supply fan and the fourth installation position for installing the air exhaust fan are arranged in the installation piece of the fresh air dehumidifier disclosed by the utility model, and when the fresh air fan is assembled, the heat exchanger, the air exhaust fan, the evaporator and the air supply fan are only required to be installed at the corresponding positions, the influence of the installation position of each part on the installation positions of other parts is not required to be considered, so that the fresh air dehumidifier is convenient to assemble.

2. According to the fresh air dehumidifier disclosed by the utility model, the second panel of the main shell is close to one side of the top plate, the folded edge is parallel to the first panel and is abutted against the top of the mounting piece, and the mounting piece can be limited in the main shell through the folded edge, so that the stability of the mounting piece in the shell is improved.

3. According to the fresh air dehumidifier disclosed by the utility model, the first access hole is formed in the bottom of the first installation position, the second access hole for exposing the first access hole is formed in the first panel, and the first access cover is arranged on the second access hole, so that when the heat exchanger is required to be overhauled or replaced, the heat exchanger is conveniently maintained and replaced by opening the first access cover and drawing out the heat exchanger through the first access hole and the second access hole.

For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.

Drawings

FIG. 1 is a schematic diagram of a fresh air dehumidifier according to an embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the mounting member of FIG. 2;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is an assembly view of the main housing, left side plate, right side plate and mounting member of FIG. 2;

FIG. 6 is an exploded view of FIG. 5;

wherein, the reference numerals of each drawing are as follows:

1. a housing; 11. a main housing; 111. a first panel; 1110. a second access port; 1111. a first access cover; 1112. a fourth access port; 1113. a second access cover; 1114. a sixth access port; 1115. a third access cover; 1116. an eighth access port; 1117. a fourth access cover; 1118. a tenth access opening; 1119. a fifth access cover; 112. a second panel; 113. folding edges; 12. a left side plate; 13. a first fresh air inlet; 14. a first exhaust outlet; 15. a right side plate; 16. a first fresh air outlet; 17. a first return air inlet; 18. a top plate; 2. a mounting member; 20. a second fresh air inlet; 21. a first screen mounting location; 211. a second chute; 22. a first mounting location; 221. a first chute; 23. a second mounting location; 24. a third mounting location; 25. a fourth mounting location; 26. a second filter screen mounting position; 261. a third chute; 27. a second fresh air outlet; 28. a second return air inlet; 29. a second exhaust outlet; 210. a positioning groove; 212. a first access port; 213. a third access port; 214. a fifth access port; 215. a seventh access port; 216. a ninth access port; 3. a heat exchanger; 4. an evaporator; 5. an exhaust fan; 6. fresh air filter screen; 7. a return air filter screen; 8. an air supply fan; 9. and a controller.

Detailed Description

It should be understood that the described embodiments are merely some, but not all embodiments of the present utility model. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the utility model, are intended to be within the scope of the embodiments of the present utility model.

The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model as detailed in the accompanying claims. In the description of the present utility model, it should be understood that the terms "first," "second," "third," and the like are used merely to distinguish between similar objects and are not necessarily used to describe a particular order or sequence, nor should they be construed to indicate or imply relative importance. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the description of the present utility model, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Referring to fig. 1 and 2, the present embodiment provides a fresh air dehumidifier, which includes a housing 1, a mounting member 2, an exhaust fan 5, a heat exchanger 3, an evaporator 4, and an air supply fan 8, wherein:

the shell 1 is provided with a first fresh air inlet 13, a first fresh air outlet 16, a first air return port 17 and a first air outlet 14, a fresh air channel is arranged between the first fresh air inlet 13 and the first fresh air outlet 16, and an air return channel is arranged between the first air return port 17 and the first air outlet 14; the heat exchanger 3, the evaporator 4 and the air supply fan 8 are sequentially arranged in the fresh air duct along the direction from the first fresh air inlet 13 to the first fresh air outlet 16; the heat exchanger 3 and the exhaust fan 5 are sequentially arranged in the return air duct along the direction from the first return air opening 17 to the first exhaust air opening 14.

Referring to fig. 3 and 4, the mount 2 is disposed within the housing 1; the mounting member 2 is provided therein with a first mounting position 22 for mounting the heat exchanger 3, a second mounting position 23 for mounting the evaporator 4, a third mounting position 24 for mounting the blower fan 8, and a fourth mounting position 25 for mounting the exhaust fan 5.

In this embodiment, since the mounting member 2 is disposed in the housing 1, and the first mounting position 22 for mounting the heat exchanger 3, the second mounting position 23 for mounting the evaporator 4, the third mounting position 24 for mounting the air supply fan 8, and the fourth mounting position 25 for mounting the air exhaust fan 5 are disposed in the mounting member 2, when the fresh air dehumidifier is assembled, only the heat exchanger 3, the evaporator 4, the air exhaust fan 5, and the air supply fan 8 need to be mounted to the first mounting position 22, the second mounting position 23, the fourth mounting position 25, and the third mounting position 24, respectively, thereby facilitating the assembly of the fresh air dehumidifier. Moreover, the mounting piece 2 also increases the mechanical strength of the shell 1, so that the buckling deformation of the shell 1 of the fresh air dehumidifier during hoisting can be reduced.

In this embodiment, the mounting member 2 is an integrally formed structure, and is made of EPP; moreover, the second mounting position 2 is a sunk groove, the evaporator 4 comprises an evaporator body and a water receiving disc connected to the bottom of the evaporator body, the second mounting position 22 is used for accommodating the water receiving disc, and the water receiving disc can be stably clamped in the second mounting position 22 without screws and the like due to EPP of the material of the mounting piece 2.

In this embodiment, referring to fig. 4, the mounting member 2 includes a second fresh air inlet 20 for connecting with the first fresh air inlet 13, a second fresh air outlet 27 for connecting with the first fresh air outlet 16, a second air return 28 for connecting with the first air return 17, and a second air outlet 29 for connecting with the first air outlet 14, where, in a specific arrangement, the positions of the first fresh air inlet 13 and the second fresh air inlet 20 are opposite, the positions of the first fresh air outlet 16 and the second fresh air outlet 27 are opposite, the positions of the first air outlet 14 and the second air outlet 29 are opposite, and the positions of the first air return 17 and the second air return 28 are opposite.

In this embodiment, referring to fig. 1, 2, 4 and 6, the housing 1 includes a main casing 11, a left side plate 12 connected to the left side of the main casing 11, a right side plate 15 connected to the right side of the main casing 11, and a top plate 18 connected to the top of the main casing 11; the main housing 11 includes a first panel 111 and two second panels 112, and the two second panels 112 are respectively vertically connected to front and rear sides of the first panel 111; a flange 113 is arranged on one side of the second panel 112 close to the top plate 18, and the flange 113 is parallel to the first panel 111 and abuts against the top of the mounting piece 2; the first fresh air inlet 13 and the first exhaust outlet 14 are sequentially provided on the left side plate 12 along the direction from the front side to the rear side; the first air return opening 17 is arranged on the second panel 112 positioned at the front side; the first fresh air outlet 16 is provided on the right side plate 15.

When the fresh air dehumidifier is assembled, the mounting piece 2 is firstly pushed into the main shell 11 along the left side or the rear side of the main shell 11, and then the left side plate 12 and the right side plate 15 are respectively connected to the left side and the right side of the main shell 11, so that convenience is realized; further, when the mount 2 is positioned in the main housing 11, the two folded edges 113 abut against the top portions of the front and rear sides of the mount 2, respectively, improving the stability of the mount 2 when mounted in the main housing 11.

In this embodiment, referring to fig. 3 and 4, the heat exchanger 3 slides up and down along a first guide in the first installation site 22; the first guide member 33 includes at least one first sliding groove 221 slidably engaged with the heat exchanger 3, and the first sliding groove 221 extends in the up-down direction of the first installation site 22.

In this embodiment, the heat exchanger 3 has a hexahedral structure, and the connection positions of two adjacent surfaces thereof have a rib, so that the heat exchanger 3 can be pushed into the first installation position 22 or pulled out from the first installation position 22 by sliding the rib connecting any two surfaces up and down in the first sliding groove 221.

In this embodiment, referring to fig. 5 and 6, a first access hole 212 is provided at the bottom of the first installation site 22, a second access hole 1110 for exposing the first access hole 212 is provided on the first panel 111, a first access cover 1111 is provided on the second access hole 1110, and when the heat exchanger 3 needs to be repaired or replaced, only the first access cover 1111 needs to be opened, and then the heat exchanger 3 is pulled out from the first installation site 22 through the first access hole 212 and the second access hole 1110, thereby greatly facilitating the repair and replacement of the heat exchanger 3. In addition, when the installation is specifically performed, the first installation site 22 penetrates the installation member 2 in the vertical direction, so that the first installation site 22 has a hollow columnar structure with openings in the vertical direction, and the first access opening 212 is the bottom opening of the first installation site 22.

In this embodiment, referring to fig. 5 and 6, a third access hole 213 is provided at the bottom of the third installation position 24, a fourth access hole 1112 for exposing the third access hole 213 is provided on the first panel 111, and a second access cover 1113 is provided on the fourth access hole 1112, so that when the air blower 8 needs to be maintained, the air blower 8 can be maintained through the fourth access hole 1112 and the third access hole 213 by only opening the second access cover 1113, without disassembling the top plate 18 and disassembling the air blower 8 from the third installation position 24 for maintenance, thereby facilitating maintenance of the air blower 8.

In this embodiment, referring to fig. 5 and 6, a fifth access hole 214 is provided at the bottom of the fourth installation site 25, a sixth access hole 1114 for exposing the fifth access hole 214 is provided on the first panel 111, and a third access cover 1115 is provided on the sixth access hole 1114, so that when the exhaust fan 5 needs to be maintained, the exhaust fan 5 can be maintained through the fifth access hole 214 and the sixth access hole 1114 only by opening the third access cover 1115, without disassembling the top plate 18 and disassembling the exhaust fan 5 from the fourth installation site 25 for maintenance, thereby facilitating maintenance of the exhaust fan 5.

In this embodiment, in order to prevent impurities such as dust in the return air and the fresh air from entering the heat exchanger 3, the fresh air dehumidifier further includes a fresh air filter screen 6 and a return air filter screen 7, where the fresh air filter screen 6 is disposed in the fresh air duct and between the first fresh air inlet 13 and the heat exchanger 3; the return air filter screen 7 is arranged in the return air duct and is positioned between the first return air inlet 17 and the heat exchanger 3.

Referring to fig. 4, in order to facilitate the installation of the fresh air filter 6, the fresh air duct is provided with a first filter installation position 21 for installing the fresh air filter 6 between the first fresh air inlet 13 and the first installation position 22; moreover, in order to facilitate the replacement of the fresh air filter 6 in time, a seventh access hole 215 is provided at the bottom of the first filter mounting position 21, an eighth access hole 1116 for exposing the seventh access hole 215 is provided on the first panel 111, a fourth access cover 1117 is provided on the eighth access hole 1116, and when the fresh air filter 6 is cleaned or replaced, the fourth access cover 1117 is taken out from the eighth access hole 1116, and then the fresh air filter 6 is pulled out from the first filter mounting position 21 through the seventh access hole 215 and the eighth access hole 1116. In this embodiment, the first screen mounting portion 21 penetrates the mounting member 2 in the up-down direction, so that the first screen mounting portion 21 has a hollow cylindrical structure, and the seventh access opening 215 is an opening at the bottom of the first screen mounting portion 21.

Referring to fig. 4, in order to facilitate the installation of the return air filter 7, the return air duct is provided with a second filter installation position 26 for installing the return air filter 7 between the first return air inlet 17 and the first installation position 22, a ninth access hole 216 is provided at a first of the second filter installation positions 26, a tenth access hole 1118 for exposing the ninth access hole 216 is provided at the first panel 111, a fifth access cover 1119 is provided at the tenth access hole 1118, and when the return air filter 7 is cleaned or replaced, the fifth access cover 1119 is taken out from the tenth access hole 1118, and then the return air filter 7 is drawn out from the second filter installation position 26 through the ninth access hole 216 and the tenth access hole 1118. In this embodiment, the second screen mounting portion 26 penetrates the mounting member 2 in the up-down direction, so that the second screen mounting portion 26 has a hollow cylindrical structure, and the ninth access opening 216 is an opening at the bottom of the second screen mounting portion 26.

Referring to fig. 3 and 4, the fresh air filter 6 slides up and down in the first filter mounting position 21 through a second guide member, the second guide member includes at least one second sliding slot 211 slidably engaged with one end of the fresh air filter 6, and the second sliding slot 211 extends in the up and down direction of the first filter mounting position 21; the return air filter screen 7 slides up and down in the second filter screen mounting position 26 through a third guide, the third guide piece comprises at least one third sliding groove 261 which is in sliding fit with one end of the return air filter screen 7, and the third sliding groove 261 extends along the up and down direction of the second filter screen mounting position 26.

Referring to fig. 1 and 2, the fresh air dehumidifier further includes a controller 9 connected to the housing 1, and the exhaust fan 8, the heat exchanger 3, the evaporator 4, and the air supply fan 5 are connected to the controller 9 through electric wires (not shown); the top of installed part 2 is provided with a plurality of constant head tanks 210, the constant head tank 210 is used for the joint a plurality of electric wire, and it passes through constant head tank 210 can be with electric wire in the new trend dehumidifier is fixed to avoid the electric wire between the different parts to appear crossing and cause the circuit short circuit, improve the security when the new trend dehumidifier operates.

It is to be understood that the embodiments of the utility model are not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of embodiments of the utility model is limited only by the appended claims.

The foregoing examples have shown only the preferred embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and the utility model is intended to encompass such modifications and improvements.

Claims

1. Fresh air dehumidifier, including shell, installed part, exhaust fan, heat exchanger, evaporimeter and air supply fan, its characterized in that:

2. The fresh air dehumidifier of claim 1, wherein: the shell comprises a main shell body, a left side plate connected to the left side of the main shell body, a right side plate connected to the right side of the main shell body and a top plate connected to the top of the main shell body; the main shell comprises a first panel and two second panels, and the two second panels are respectively and vertically connected to the front side and the rear side of the first panel; a folded edge is arranged on one side, close to the top plate, of the second panel, is parallel to the first panel and abuts against the top of the mounting piece;

3. The fresh air dehumidifier of claim 2, wherein: the heat exchanger slides up and down along a first guide in the first installation position; the first guide piece comprises at least one first sliding groove which is in sliding fit with the heat exchanger, and the first sliding groove extends along the up-down direction of the first installation position.

4. A fresh air dehumidifier according to claim 3, wherein: the bottom of first installation position is provided with first access hole, be provided with on the first panel and be used for exposing the second access hole of first access hole, be provided with first access cover on the second access hole.

5. The fresh air dehumidifier of claim 2, wherein: the bottom of third installation position is provided with the third access hole, be provided with on the first panel and be used for exposing the fourth access hole of third access hole, be provided with the second access cover on the fourth access hole.

6. The fresh air dehumidifier of claim 2, wherein: the bottom of fourth installation position is provided with the fifth access hole, be provided with on the first panel and be used for exposing the sixth access hole of fifth access hole, sixth access hole is provided with the third access cover.

7. The fresh air dehumidifier of claim 2, wherein: the fresh air dehumidifier further comprises a fresh air filter screen and a return air filter screen, wherein the fresh air filter screen is arranged in the fresh air duct and is positioned between the first fresh air inlet and the heat exchanger; the return air filter screen is arranged in the return air duct and is positioned between the first return air opening and the heat exchanger.

8. The fresh air dehumidifier of claim 7, wherein: the fresh air duct is provided with a first filter screen installation position for installing the fresh air filter screen between the first fresh air inlet and the first installation position, the bottom of the first filter screen installation position is provided with a seventh access hole, the first panel is provided with an eighth access hole for exposing the seventh access hole, and the eighth access hole is provided with a fourth access cover;

9. The fresh air dehumidifier of claim 8, wherein: the fresh air filter screen slides up and down in the first filter screen mounting position through a second guide piece, the second guide piece comprises at least one second chute which is in sliding fit with one end of the fresh air filter screen, and the second chute extends along the up-down direction of the first filter screen mounting position;

the return air filter screen slides up and down in the second filter screen installation position through a third guide piece, the third guide piece comprises at least one third chute which is in sliding fit with one end of the return air filter screen, and the third chute extends along the up-down direction of the second filter screen installation position.

10. The fresh air dehumidifier of any of claims 1-9, wherein: the fresh air dehumidifier further comprises a controller connected with the shell, and the exhaust fan, the heat exchanger, the evaporator and the air supply fan are all connected with the controller through wires; the top of installed part is provided with a plurality of constant head tanks, the constant head tank is used for the joint a plurality of electric wire.