CN218269305U

CN218269305U - Fresh air conditioner

Info

Publication number: CN218269305U
Application number: CN202221832987.XU
Authority: CN
Inventors: 暨文伟; 张宏闯; 陈武; 黑潇; 张雪涛
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2023-01-10
Anticipated expiration: 2032-07-14

Abstract

The application discloses new trend air conditioner includes: a housing; the fresh air component comprises a volute, a volute cover and a sealing cover, the volute cover is covered on the volute, the sealing cover is covered on a volute cover, an air outlet cavity is formed between the volute cover and the volute, and an air inlet cavity is formed between the volute cover and the sealing cover; and the first end of the heat exchanger is arranged in the shell, and the second end of the heat exchanger is fixed in the air outlet cavity or the air inlet cavity through a volute or a sealing cover. Above-mentioned fresh air conditioner runs through spiral case or sealed lid through the one end that makes the heat exchanger and extends to air outlet chamber or air inlet chamber in, so can make the outdoor air that introduces through the fresh air subassembly earlier carry out the heat transfer through the heat exchanger before getting into indoorly to the temperature that makes newly get into indoor air and indoor original air is the same basically, eliminates the temperature difference between outdoor air and the indoor air, maintains the balance of indoor temperature, finally reaches the purpose that promotes use comfort.

Description

Fresh air conditioner

Technical Field

The application belongs to the technical field of air conditioning equipment, and particularly relates to a fresh air conditioner.

Background

With the development of the technology, the fresh air module is gradually applied to various air conditioners, and outdoor air can be introduced into an indoor space through the fresh air module. In the related art, a fresh air module of an air conditioner is independently assembled in an air conditioner shell, introduced outdoor air is directly exhausted through an air outlet of the fresh air module and does not exchange heat through a heat exchanger of an indoor unit, temperature difference exists between the outdoor air and indoor air, indoor temperature balance is broken, and the use comfort level is poor.

Disclosure of Invention

This application aims at solving the outdoor air that fresh air conditioner introduced at least to a certain extent and not passing through the heat transfer, the poor technical problem of use comfort. Therefore, the application provides a fresh air conditioner.

The embodiment of the application provides a new trend air conditioner, new trend air conditioner includes:

a housing;

the fresh air assembly comprises a volute, a volute cover and a sealing cover, the volute cover is covered on the volute, the sealing cover is covered on the volute cover, an air outlet cavity is formed between the volute cover and the volute, and an air inlet cavity is formed between the volute cover and the sealing cover; and the number of the first and second groups,

and the first end of the heat exchanger is arranged in the shell, and the second end of the heat exchanger is fixed in the air outlet cavity or the air inlet cavity through the volute or the sealing cover.

In some embodiments, a through groove matched with the heat exchanger is formed in the volute casing or the sealing cover, and a sealing member is arranged in the through groove.

In some embodiments, a snap structure is provided on the volute or the sealing cover, the snap structure being located around the through groove, and the heat exchanger is fixed to the volute or the sealing cover by the snap structure.

In some embodiments, the volute or the volute cover is provided with an air duct surrounding wall, and the volute cover, the volute and the air duct surrounding wall form a volute-shaped air outlet cavity.

In some embodiments, the volute or the sealing cover is of unitary construction with the side plate of the heat exchanger.

In some embodiments, the seal cover or the volute not disposed through the heat exchanger is of unitary construction with the housing.

In some embodiments, the volute casing or the volute casing cover is provided with an air outlet communicated with the air outlet cavity, the sealing cover or the volute casing cover is provided with an air inlet communicated with the air inlet cavity, and the volute casing cover is provided with a communication port communicated with the air inlet cavity and the air outlet cavity.

In some embodiments, a motor mounting portion is provided on the volute.

In some embodiments, one end of the heat exchanger extends into the air outlet chamber through the volute, and the motor mounting portion is disposed to avoid a portion of the heat exchanger extending into the air outlet chamber.

In some embodiments, the fresh air conditioner further comprises:

and the air filter is arranged in the air inlet cavity and is arranged between the air inlet and the communication port.

In some embodiments, the volute or the sealing cover is provided with a filter replacing opening at a position corresponding to the air filter.

In some embodiments, the volute and/or the sealing cover are provided with a guide rail corresponding to the filter exchange port, and the air filter is slidably disposed on the guide rail.

The embodiment of the application has at least the following beneficial effects:

according to the fresh air conditioner, one end of the heat exchanger penetrates through the volute or the sealing cover and extends into the air outlet cavity or the air inlet cavity, so that outdoor air introduced through the fresh air assembly can exchange heat through the heat exchanger before entering the room, the temperature of the air newly entering the room is basically the same as that of original indoor air, the temperature difference between the outdoor air and the indoor air is eliminated, the indoor temperature is kept balanced, and the purpose of improving the use comfort level is finally achieved; in addition, in the fresh air conditioner, a heat exchanger does not need to be additionally arranged to exchange heat for outdoor fresh air, and the production cost of the fresh air conditioner cannot be increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic perspective view of a fresh air conditioner (with a casing removed) in an embodiment of the present application;

FIG. 2 shows an exploded view of the fresh air conditioner of FIG. 1;

fig. 3 shows a schematic diagram of a volute structure of the fresh air conditioner in fig. 1;

fig. 4 is a schematic diagram showing the relationship between the volute and the heat exchanger in fig. 3.

Reference numerals:

100. a fresh air component; 110. a volute; 111. a through slot; 112. a seal member; 120. a volute cover; 130. a sealing cover; 140. an air filter; 150. a fresh air motor; 160. a fresh air wheel; 200. a heat exchanger.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

the application provides a new trend air conditioner, as shown in fig. 1 and fig. 2, new trend air conditioner includes:

a housing;

the fresh air assembly 100 comprises a volute casing 110, a volute casing cover 120 covering the volute casing 110 and a sealing cover 130 covering the volute casing cover 120, an air outlet cavity is formed between the volute casing cover 120 and the volute casing 110, and an air inlet cavity is formed between the volute casing cover 120 and the sealing cover 130; and the number of the first and second groups,

the first end of the heat exchanger 200 is arranged in the casing, and the second end of the heat exchanger 200 is fixed in the air outlet cavity or the air inlet cavity through the volute 110 or the sealing cover 130.

In the fresh air conditioner, one end of the heat exchanger 200 penetrates through the volute 110 or the sealing cover 130 and extends into the air outlet cavity or the air inlet cavity, so that outdoor air introduced through the fresh air assembly 100 can exchange heat through the heat exchanger 200 before entering the room, the temperature of the air newly entering the room is basically the same as that of original indoor air, the temperature difference between the outdoor air and the indoor air is eliminated, the indoor temperature is kept balanced, and the purpose of improving the use comfort level is finally achieved; in addition, in the fresh air conditioner, the heat exchanger 200 does not need to be additionally arranged to exchange heat with outdoor fresh air, and the production cost of the fresh air conditioner cannot be increased.

In traditional new trend air conditioner, the new trend module is designed and is set up independently of the air conditioner, and the new trend of introducing through the new trend module often directly discharges to indoor. In some schemes, a heat exchange device is arranged in a fresh air module to adjust the temperature of introduced fresh air, but the mode usually greatly increases the production cost of the fresh air conditioner; in other schemes, the fresh air introduced by the fresh air module is guided into a heat exchange air duct of the air conditioner, but the path length and the wind resistance of the fresh air can be greatly increased by the mode, and the efficiency of the fresh air module is greatly influenced.

In the present application, the fresh air assembly 100 is formed by the scroll casing 110, the scroll casing cover 120 and the sealing plate, and an air inlet cavity and an air outlet cavity are formed in the fresh air assembly 100. By penetrating a portion of the heat exchanger 200 into the fresh air module 100, a portion of the heat exchanger 200 is disposed in the intake chamber or the exhaust chamber, i.e., a portion of the heat exchanger 200 is disposed on the flow path of the fresh air. When the fresh air conditioner works, the fresh air and the refrigerating/heating functions are simultaneously started, the fresh air motor 150 arranged in the air outlet cavity drives the fresh air wheel 160 to work, and the fresh air in the air outlet cavity and the air inlet cavity is driven, so that outdoor fresh air enters the air inlet cavity through the air inlet, then enters the air outlet cavity through the air inlet communicating port of the volute 110, and further enters indoor space through the air outlet. The new trend of introducing will certainly carry out the heat transfer with the heat exchanger 200 second end contact that is located air inlet chamber or air-out chamber to the new trend temperature of introducing is adjusted, maintains the balance of indoor temperature, finally reaches the purpose that promotes comfort in use, and the new trend air conditioner of this application need not additionally to set up heat exchanger 200 or heat transfer wind channel, and is little to new trend air conditioner's cost influence. When the fresh air conditioner works, only the fresh air function is started, which indicates that the temperature difference of indoor and outdoor air is not large, the fresh air introduced by the fresh air component 100 directly enters the room without heat exchange through the heat exchanger 200.

In this application, new trend subassembly 100 can set up the left end at new trend air conditioner, also can set up the right-hand member at new trend air conditioner. As shown in fig. 1 and fig. 2, in the following embodiments of the present application, the fresh air conditioner of the present application is exemplarily described by taking an example in which the fresh air module 100 is disposed at a left end of the fresh air conditioner.

In this application, optionally, the casing includes a bottom casing, a panel covering the bottom casing, and end plates disposed at two ends of the bottom casing. The fresh air component 100 is fixed on the bottom shell and can also be completely positioned in the bottom shell. The specific setting mode can be adjusted adaptively according to the structure of the bottom shell, and is not described herein again.

As shown in fig. 2 and fig. 3, in this embodiment, a part of the second end of the heat exchanger 200 extending to the fresh air component 100 can be adjusted according to the fresh air efficiency of the fresh air component 100, and when the fresh air introduced by the fresh air component 100 has a relatively high efficiency, the length of the second end of the heat exchanger 200 extending to the fresh air component 100 can be properly extended, so as to ensure efficient heat exchange of the introduced fresh air, and make the temperature of the introduced fresh air closer to the temperature of the indoor air.

As an optional embodiment, in the fresh air conditioner of the present application, a through groove 111 matching with the heat exchanger 200 is opened on the scroll casing 110 or the sealing cover 130, and a sealing member 112 is disposed in the through groove 111. In order to enable the volute 110 or the sealing cover 130 to enable the heat exchanger 200 to penetrate through the volute 110 or the sealing cover 130, a penetrating groove 111 is formed in the volute 110 or the sealing cover 130, meanwhile, a sealing element 112 is arranged in the penetrating groove 111, so that when the second end of the heat exchanger 200 penetrates through the volute 110 or the sealing cover 130, the heat exchanger 200 is in close contact with the penetrating groove 111, air leakage of an air inlet cavity or an air outlet cavity through the penetrating groove 111 is avoided, the heat exchanger 200 can be fixed on the volute 110 or the sealing element 112 through the sealing element 112, and potential risks of leakage of a refrigerating machine and the like caused by damage of the heat exchanger 200 due to vibration are avoided.

As shown in fig. 3 and 4, in the present embodiment, the volute 110 is opened with a through groove 111, so that the second end of the heat exchanger 200 is disposed on the volute 110 in a penetrating manner, and the second end of the heat exchanger 200 is fixed in the through groove 111 by a sealing member 112.

As an alternative embodiment, in the fresh air conditioner of the present application, a snap structure is provided on the scroll casing 110 or the sealing cover 130, the snap structure is located around the through groove 111, and the heat exchanger 200 is fixed on the scroll casing 110 or the sealing cover 130 by the snap structure. When the second end of the heat exchanger 200 is disposed in the fresh air assembly 100 through the through groove 111, the heat exchanger 200 may be fixed on the scroll 110 or the sealing cover 130 through a snap structure, so that the heat exchanger 200 is fixed in the fresh air assembly.

As an alternative embodiment, in the present application, the air duct surrounding wall is provided on the volute 110 or the volute cover 120, and the volute cover 120, the volute 110 and the air duct surrounding wall form the volute 110-shaped air outlet chamber. In order to improve the air outlet efficiency of the fresh air component 100, the air outlet cavity is preferably configured to be a volute 110, so that an air duct enclosure wall may be disposed on the volute 110 or the volute cover 120, and a certain gap is provided between the volute 110 and the volute cover 120 through the air duct enclosure wall, so as to form a volute 110-shaped air outlet cavity among the volute 110, the volute cover 120, and the air duct enclosure wall.

As shown in fig. 2 and 3, in the present embodiment, the air duct surrounding wall is provided on the volute cover 120, so that the volute 110-shaped air outlet chamber can be formed by buckling the volute cover 120 on the volute 110.

In other embodiments, the duct enclosure wall may also be provided on the volute 110. It should be noted that, when the air duct surrounding wall is disposed on the volute 110 and the through groove 111 is disposed on the volute 110, the air duct surrounding wall needs to be disposed around the through groove 111, so that the formed volute 110-shaped air outlet cavity wraps the second end of the heat exchanger 200 therein.

As an alternative embodiment, in the fresh air conditioner of the present application, the scroll 110 or the sealing cover 130 is integrally formed with the side plate of the heat exchanger 200. The volute 110 and the sealing cover 130 form a shell of the fresh air assembly 100, and the volute 110 or the sealing cover 130 and the side plate of the heat exchanger 200 are integrated, so that one part of the fresh air conditioner can be reduced, and the production cost is reduced. Some adaptations of the sideboard of heat exchanger 200 may be made in order to allow the sideboard to function as scroll 110 or sealing cover 130. For example, the shape of the sideboard may be made to conform more to the shape requirements of the volute 110 or the sealing plate, etc.

As shown in fig. 2 and fig. 3, in the present embodiment, the second end of the heat exchanger 200 is disposed on the volute 110 in a penetrating manner, and the volute cover 120 is buckled on the volute 110, so as to form a volute 110-shaped air outlet chamber between the volute cover 120 and the volute 110, and the second end of the heat exchanger 200 is located in the volute 110-shaped air outlet chamber. Meanwhile, the sealing cover 130 covers the scroll casing 110, an air inlet chamber is formed between the sealing cover 130 and the scroll casing 110, and the scroll casing cover 120 is enclosed in the air inlet chamber. In this embodiment, the volute 110 further has the function of the side plate of the heat exchanger 200, so that an independent side plate does not need to be arranged on the heat exchanger 200 in the fresh air conditioner, that is, the part of the side plate is saved, the arrangement space between the volute 110 of the fresh air assembly 100 and the side plate is also saved, and the improvement of the space utilization rate in the casing is facilitated.

As an alternative embodiment, in the fresh air conditioner of the present application, the sealing cover 130 or the scroll casing 110, which does not penetrate the heat exchanger 200, is integrated with the casing. Through making seal lid 130 or spiral case 110 that does not run through to set up heat exchanger 200 and casing structure as an organic whole, can make seal lid 130 or spiral case 110 and casing fuse as an organic whole, make it have the effect of seal lid 130 or spiral case 110 promptly, still have the effect of casing, can further reduce the part quantity of fresh air conditioner, reduce fresh air conditioner's manufacturing cost.

For example, the sealing cover 130 is integrally formed with the casing, and a certain enclosure is provided on the casing or the volute cover 120, so that an air inlet chamber is formed between the casing and the volute cover 120. For another example, the sealing cover 130 is integrated with the casing, and a certain surrounding plate is provided on the casing or the volute 110, so as to form an air inlet chamber between the casing and the volute 110, and to surround an air outlet chamber formed by the volute cover 120 and the volute 110 in the air inlet chamber.

As an optional embodiment, the spiral casing 110 or the spiral casing cover 120 is provided with an air outlet communicated with the air outlet chamber, the sealing cover 130 or the spiral casing cover 120 is provided with an air inlet communicated with the air inlet chamber, and the spiral casing cover 120 is provided with a communication port communicated with the air inlet chamber and the air outlet chamber. As an alternative embodiment, the volute 110 is provided with a motor assembling portion. The volute 110 is provided with a motor assembly part for positioning and fixing the fresh air motor 150. Through the motor assembling part, the assembling position of the fresh air motor 150 can be accurately positioned in the assembling process of the fresh air conditioner, and the fresh air motor 150 can be further assembled and fixed in the volute 110 through the motor assembling part. It is further preferable that one end of the heat exchanger 200 extends into the air outlet chamber through the scroll casing 110, and the position where the motor mounting portion is provided is located away from the portion of the heat exchanger 200 extending into the air outlet chamber.

As an optional implementation manner, in the present application, the fresh air conditioner further includes: and the air filter 140 is arranged in the air inlet cavity and is arranged between the air inlet and the communication port.

As shown in fig. 2, in this embodiment, the air filter 140 is disposed in the air inlet chamber, because the air outlet chamber formed by the volute 110 is used for disposing the fresh air motor 150 and the fresh air wheel 160, there is no redundant space for disposing the air filter 140, and meanwhile, outdoor fresh air firstly needs to pass through the air inlet chamber, so the air filter 140 disposed in the air inlet chamber can filter outdoor fresh air in the first time, and it is avoided that contaminants such as dust entrained by the outdoor fresh air enter the air outlet chamber to affect the normal operation of the fresh air motor 150 and the fresh air wheel 160 or the contaminants such as dust are collected in the air outlet chamber.

In this embodiment, the air filter 140 is configured to have a shape matching the structure of the air inlet cavity, and when the air filter 140 is placed in the air inlet cavity, the frame of the air filter can be attached to the side wall of the air inlet cavity, so as to divide the air inlet cavity into two parts, one part of which is communicated with the pipeline for introducing outdoor fresh air through the air inlet, and the other part of which is communicated with the air outlet cavity through the communication port. Outdoor new trend at first gets into in the air inlet chamber through the air intake with outdoor new trend pipeline intercommunication, then just can get into the air-out chamber through the intercommunication mouth after filtering through air cleaner 140, ensures that all outdoor new trend can get into the air-out chamber after passing through air cleaner 140's filtration.

Preferably, in this embodiment, the Air Filter 140 is a High Efficiency Air Filter 140 (HEPA), the HEPA is mainly used for collecting particle dust and various suspended matters with a particle size of more than 0.5 μm, the HEPA is mainly made of ultrafine glass fiber paper as a Filter material, offset paper, aluminum film and other materials as a partition board, and the Filter material is glued with wood frame aluminum alloy.

In some embodiments, the volute 110 or the sealing cover 130 is provided with a filter replacing opening at a position corresponding to the air filter 140.

As shown in fig. 3, the air filter 140 of the present embodiment is disposed in the air inlet chamber, but the air filter 140 is a consumable part and needs to be replaced periodically, and it is still difficult for a non-professional, such as a general user, to replace the air conditioning filter device by detaching the sealing cover 130, so in the present application, it is preferable to provide a filter replacement opening on the scroll casing 110 or the sealing cover 130 corresponding to the air filter 140, and the air filter 140 can be drawn out through the filter replacement opening to replace the air filter 140.

In some embodiments, the volute 110 and/or the seal cover 130 are provided with a guide rail corresponding to the filter exchange port, and the air filter 140 is slidably disposed on the guide rail.

As shown in fig. 2, in the present embodiment, the sealing cover 130 is provided with a filter guide at a position corresponding to the filter replacement opening, and when the air filter 140 is inserted into the intake cavity through the filter replacement opening, the air filter 140 slides along the filter guide, and the air filter 140 slides to its installation position by the guiding action of the filter guide. In this embodiment, the filter guide rail can block the gap between the air filter 140 and the sealing cover 130 by the filter guide rail in addition to guiding the air filter 140 to slide to the installation position, so as to prevent fresh outdoor air which is not filtered by the air filter 140 from entering the air outlet chamber through the gap.

In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used for explaining the relative position relationship, the motion condition, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed correspondingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a fresh air conditioner which characterized in that, fresh air conditioner includes:

a housing;

the fresh air assembly comprises a volute, a volute cover and a sealing cover, the volute cover is covered on the volute, the sealing cover is covered on the volute cover, an air outlet cavity is formed between the volute cover and the volute, and an air inlet cavity is formed between the volute cover and the sealing cover; and (c) a second step of,

2. The fresh air conditioner according to claim 1, wherein a through groove matched with the heat exchanger is formed in the volute or the sealing cover, and a sealing member is arranged in the through groove.

3. The fresh air conditioner as claimed in claim 2, wherein a snap structure is provided on the volute or the sealing cover, the snap structure is located around the through groove, and the heat exchanger is fixed on the volute or the sealing cover through the snap structure.

4. The fresh air conditioner as claimed in claim 1, wherein the volute or the volute cover is provided with an air duct enclosure wall, and the volute cover, the volute and the air duct enclosure wall form a volute-shaped air outlet cavity.

5. The fresh air conditioner as claimed in claim 1, wherein the volute or the sealing cover is integrated with the side plate of the heat exchanger.

6. The fresh air conditioner as claimed in any one of claims 1 to 5, wherein the sealing cover or the volute which does not penetrate through the heat exchanger is integrated with the casing.

7. The fresh air conditioner as claimed in claim 6, wherein the volute or the volute cover is provided with an air outlet communicated with the air outlet chamber, the sealing cover or the volute cover is provided with an air inlet communicated with the air inlet chamber, and the volute cover is provided with a communication port communicated with the air inlet chamber and the air outlet chamber.

8. The fresh air conditioner as claimed in claim 6, wherein the volute is provided with a motor assembling portion.

9. The fresh air conditioner as claimed in claim 8, wherein one end of the heat exchanger extends into the air outlet chamber through the volute, and the motor mounting portion is disposed to avoid a portion of the heat exchanger extending into the air outlet chamber.

10. The fresh air conditioner as claimed in claim 7, further comprising:

11. The fresh air conditioner as claimed in claim 10, wherein a filter replacement port is provided at a position of the volute or the sealing cover corresponding to the air filter.

12. The fresh air conditioner as claimed in claim 11, wherein the scroll case and/or the sealing cover is provided with a guide rail corresponding to the filter exchange port, and the air filter is slidably provided on the guide rail.