CN209960664U

CN209960664U - Fresh air purifying and air conditioning all-in-one machine

Info

Publication number: CN209960664U
Application number: CN201920488151.4U
Authority: CN
Inventors: 蒋凯凯; 陈建兵
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-01-17
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses a fresh air purifying and air conditioning integrated machine, which comprises an air conditioning module, a purifying module and a fresh air module; the air conditioning module comprises a first shell, an evaporator and a first fan; the first shell comprises an air conditioner air inlet and an air conditioner air outlet; the evaporator and the first fan are both arranged between the air conditioner air inlet and the air conditioner air outlet in the first shell; the purification module comprises a second shell, a purification component and a second fan; the second shell comprises a purification air inlet and a purification air outlet; the purification component and the second fan are arranged between the purification air inlet and the purification air outlet in the second shell; the fresh air module comprises a third shell, a fresh air channel, a fresh air filter screen and a third fan; the third shell comprises a fresh air inlet and a fresh air outlet; one end of the fresh air channel is communicated with the outside of the room, and the other end of the fresh air channel is connected with the fresh air inlet; the fresh air filter screen and the third fan are both arranged between the fresh air inlet and the fresh air outlet in the third shell. The requirement of single and arbitrary combined functions is realized, and the user experience is improved.

Description

Fresh air purifying and air conditioning all-in-one machine

Technical Field

The utility model belongs to the technical field of air conditioning, specifically speaking relates to a new trend purifies air conditioner all-in-one.

Background

The new trend function, purification performance and the air conditioning function of present new trend purification air conditioner all-in-one often are that the compound mode realizes, can't move new trend function, purification performance or air conditioning function alone, more can't adjust two arbitrary combination function operations at any time, can't satisfy the user to the multiple demand of single function and combination function, has restricted the popularization of new trend purification air conditioner all-in-one.

Disclosure of Invention

The utility model provides a new trend purifies air conditioner all-in-one satisfies the multiple demand to single function and new trend, purification, the arbitrary combined function of air conditioner, improves user experience.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a fresh air purifying and air conditioning all-in-one machine comprises an air conditioning module, a purifying module and a fresh air module; the air conditioning module comprises a first shell, an evaporator and a first fan; the first shell comprises an air conditioner air inlet and an air conditioner air outlet; the evaporator and the first fan are both arranged in the first shell and are positioned between the air conditioner air inlet and the air conditioner air outlet; the purification module comprises a second shell, a purification component and a second fan; the second shell comprises a purification air inlet and a purification air outlet; the purification assembly and the second fan are both arranged in the second shell and are positioned between the purification air inlet and the purification air outlet; the fresh air module comprises a third shell, a fresh air channel, a fresh air filter screen and a third fan; the third shell comprises a fresh air inlet and a fresh air outlet; one end of the fresh air channel is communicated with the outside, and the other end of the fresh air channel is connected with the fresh air inlet and communicated with the third shell; the new trend filter screen the third fan all sets up in the third casing, and is located the new trend air intake with between the new trend air outlet.

Further, the first fan and the second fan are axial fans and are respectively arranged at the air conditioner air outlet and the purification air outlet in a one-to-one correspondence manner.

Further, the first housing is connected to the second housing, and a switchable first channel is disposed between the first housing and the second housing, and the first channel is located between the evaporator and the first fan, and between the purification assembly and the second fan; the air conditioner air inlet and the purification air inlet are both provided with switchable windows; when the first channel is opened, the air conditioner air inlet is opened and the purification air inlet is closed, the mode is an air conditioner strengthening mode; and when the first channel is opened, the air conditioner air inlet is closed and the purification air inlet is opened, the purification strengthening mode is adopted.

Further, the third fan is an axial fan and is arranged at the fresh air outlet; the second shell is connected with the third shell, a switchable second channel is arranged between the second shell and the third shell, and the second channel is positioned between the purification assembly and the second fan and between the fresh air filter screen and the third fan; when the first channel is closed, the second channel is opened and the second shutter is closed, the mode is a fresh air strengthening mode.

Furthermore, the device also comprises a controller; the first passage passes through a first damper switch; the second channel passes through a second air door switch; the air conditioner air inlet and the purification air inlet are respectively provided with a first shutter and a second shutter; the first air door, the second air door, the first shutter and the second shutter are respectively connected with the controller and controlled to be opened or closed by the controller.

As a specific structural design of the fresh air purifying and air conditioning all-in-one machine, the second fan and the third fan are axial flow fans and are respectively arranged at the purifying air outlet and the fresh air outlet in a one-to-one correspondence manner.

Furthermore, the second shell is connected with the third shell, a switchable second channel is arranged between the second shell and the third shell, and the second channel is positioned between the purification assembly and the second fan and between the fresh air filter screen and the third fan; when the second channel is opened and the second shutter is closed, the mode is a fresh air strengthening mode.

Further, the device also comprises a controller; the second channel passes through a second air door switch; a second shutter is arranged at the purification air inlet; the second air door and the second shutter are respectively connected with the controller and controlled to be opened or closed by the controller.

Preferably, the air conditioner air inlet, the purification air inlet and the fresh air inlet are respectively arranged at the rear parts of the first shell, the second shell and the third shell in a one-to-one correspondence manner; the air conditioner air outlet, the purification air outlet and the fresh air outlet are respectively arranged in the front of the first shell, the second shell and the third shell in a one-to-one correspondence mode.

Preferably, the evaporator is arranged on a longitudinal section parallel to the air inlet of the air conditioner in the first shell; the purification assembly is arranged on a longitudinal section parallel to the purification air inlet in the second shell; the fresh air filter screen is arranged in the third shell and is parallel to the longitudinal section of the fresh air inlet.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model discloses a new trend purifies air conditioner all-in-one sets up independent wind channel respectively for air conditioning function, purification performance, new trend function, realizes air conditioning function, purification performance, new trend function independent operation, perhaps two or three operations wantonly of air conditioning function, purification performance, new trend function satisfy customer's multiple demand, improve user experience.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an integrated fresh air purifying and air conditioning machine provided by the present invention;

FIG. 2 is a schematic view showing the airflow directions of the air conditioning function, the purification function and the fresh air function when the embodiment of FIG. 1 is in operation;

FIG. 3 is a schematic view of the direction of airflow during the enhanced mode of operation of the air conditioner of the embodiment of FIG. 1;

FIG. 4 is a schematic view of the wind flow direction during the operation of the embodiment of FIG. 1 in the purification enhanced mode;

FIG. 5 is a schematic view of the wind flow direction in the fresh air augmentation mode of operation of the embodiment of FIG. 1.

In the figure, the position of the upper end of the main shaft,

1. an air conditioning module; 2. a purification module; 3. a fresh air module; 4. a first channel; 5. a second channel; 11. a first housing 12, an evaporator; 13. a first fan; 14. a first louver; 21. a second housing; 22. a purification assembly; 23. a second fan; 24. a second louver; 31. a third housing; 32. a fresh air filter screen; 33. a third fan; 34. a fresh air channel; 111. an air inlet of an air conditioner; 112. an air outlet of the air conditioner; 113. a first cavity; 211. purifying the air inlet; 212. purifying the air outlet; 213. a second cavity; 311. a fresh air inlet; 312. a fresh air outlet; 313. and a third cavity.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the fresh air purifying and conditioning all-in-one machine of the present invention comprises an air conditioning module 1, a purifying module 2 and a fresh air module 3; the air conditioning module 1 comprises a first housing 11, an evaporator 12, a first fan 13; the first shell 11 forms a first cavity 113, which comprises an air conditioner air inlet 111 and an air conditioner air outlet 112, and the first cavity 113 is communicated with the indoor environment; the evaporator 12 and the first fan 13 are both located in the first cavity 113, and the evaporator 12 is located between the air conditioner air inlet 111 and the air conditioner air outlet 112, so as to adjust the temperature of the indoor circulating air flowing through. The purification module 2 comprises a second shell 21, a purification component 22 and a second fan 23; the second housing 21 forms a second chamber 213 including a purge air inlet 211, a purge air outlet 212, and communicates the second chamber 213 with the indoor environment; the purification assembly 22 and the second fan 23 are both located in the second cavity 213, and the purification assembly 22 is located between the purification air inlet 211 and the purification air outlet 212 to purify the indoor circulating air flowing through. The fresh air module 3 comprises a third shell 31, a fresh air channel 34, a fresh air filter screen 32 and a third fan 33; the third housing 31 forms a third cavity 313, which includes a fresh air inlet 311 and a fresh air outlet 312; one end of the fresh air channel 34 is communicated with the outside, and the other end is connected with the fresh air inlet 311, so that the outside is communicated with the third cavity 313; the fresh air outlet 312 is communicated with the indoor environment; fresh air filter screen 32, third fan 33 all are located third cavity 313, and fresh air filter screen 32 is located between fresh air intake 311 and fresh air outlet 312, filters the new trend that flows through. The utility model discloses a new trend purifies air conditioner all-in-one sets up independent wind channel respectively for air conditioning function, purification performance, new trend function, realizes two arbitrary or three combination operations in the independent operation of air conditioning function, purification performance, new trend function or air conditioning function, purification performance, new trend function, satisfies user's diversified demand, improves user experience.

The structure of the present invention will be described in detail by way of specific embodiments.

In the first embodiment, referring to fig. 1, the first housing 11, the second housing 21, and the third housing 31 are vertically and sequentially distributed; the first housing 11 is connected with the second housing 21; the second housing 21 is connected to the third housing 31; a first channel 4 capable of being opened and closed is arranged between the first shell 11 and the second shell 21, so that the first cavity 113 and the second cavity 213 can be controllably communicated or closed; a second channel 5 which can be opened and closed is arranged between the second shell 21 and the third shell 31, so that the second cavity 213 and the third cavity 313 can be controllably communicated or closed. The first fan 13, the second fan 23 and the third fan 33 are axial fans and are respectively arranged at the air-conditioning air outlet 112, the purification air outlet 212 and the fresh air outlet 312 in a one-to-one correspondence manner; the first passage 4 is located between the evaporator 12 and the first fan 13, and between the purge assembly 22 and the second fan 23; the second channel 5 is located between the purification component 22 and the second fan 23, and between the fresh air filter screen 32 and the third fan 33. Preferably, the evaporator 12 is disposed near the air conditioner intake 111; the purification assembly 22 is disposed near the purification inlet 211; the fresh air filter screen 32 is disposed near the fresh air inlet 311. The air conditioner inlet 111 and the purification inlet 211 are both provided with switchable windows. Referring to fig. 3, when the air conditioner air inlet 111 is opened, the first channel 4 is opened, the second channel 5 is closed, and the purification air inlet 211 is closed, the fresh air purification and air conditioning all-in-one machine operates the air conditioner strengthening mode. Indoor air flows in from the air conditioner air inlet 111, part of the indoor air flows out from the air conditioner air outlet 112 through the evaporator 12, and the other part of the indoor air flows out from the purification air outlet 212, so that the air quantity passing through the evaporator 12 is increased, the heat exchange efficiency of the evaporator 12 is improved, and air conditioning is accelerated. Referring to fig. 4, when the air conditioner air inlet 111 is closed, the first channel 4 is opened, the second channel 5 is closed, and the purification air inlet 211 is opened, the fresh air purification and air conditioning all-in-one machine operates in the purification strengthening mode. Indoor air flows in from the purification air inlet 211, partially flows out from the air conditioner air outlet 112 through the purification assembly 22, and partially flows out from the purification air outlet 212, so that the air quantity passing through the purification assembly 22 is increased, the purification efficiency is improved, and the indoor air purification is accelerated. Referring to fig. 5, when the first channel 4 is closed, the second channel 5 is opened, and the purification air inlet 211 is closed, the fresh air purification and air conditioning all-in-one machine operates in a fresh air strengthening mode. The new trend flows in by new trend air intake 311, filters partly by purifying air outlet 212 outflow through new trend filter screen 32, and partly flows out by new trend air outlet 312 in the other, and the amount of wind that the increase new trend was introduced improves indoor air update speed. More than the utility model discloses an each mode all has the intensive effect than each solitary functional mode, increases the mode of new trend purification air conditioner all-in-one, satisfies different users' different demands, improves user experience.

Preferably, the device further comprises a controller; the first passage 4 is opened and closed by a first damper set on the first passage 4; the second passage 5 is opened and closed by a second damper set on the second passage 5; the air conditioner air inlet 111 and the purification air inlet 211 are respectively provided with a first shutter 14 and a second shutter 24 in a one-to-one correspondence manner; the first damper, the second damper, the first louver 14 and the second louver 24 are respectively connected with the controller, and are controlled to be opened or closed by the controller according to a set mode.

Preferably, referring to fig. 1, the first casing 11, the second casing 21, and the third casing 31 are all square box-shaped bodies. The air conditioner air inlet 111, the purification air inlet 211 and the fresh air inlet 311 are respectively arranged at the rear parts of the first shell 11, the second shell 21 and the third shell 31 in a one-to-one correspondence manner; the air-conditioning outlet 112, the purification outlet 212, and the fresh air outlet 312 are respectively disposed in front of the first casing 11, the second casing 21, and the third casing 31 in a one-to-one correspondence. Make new trend purification air conditioner all-in-one more pleasing to the eye and easy to assemble.

Preferably, referring to fig. 1, the evaporator 12 is disposed in the first housing 11 on a longitudinal section parallel to the air-conditioning intake 111; the purification assembly 22 is arranged in the second housing 21 in parallel with the longitudinal section of the purification air inlet 211; the fresh air filter screen 32 is disposed in the third casing 31 and parallel to the longitudinal section of the fresh air inlet 311. The installation of the evaporator 12, the purification assembly 22 and the fresh air filter screen 32 is facilitated.

In the second embodiment, referring to fig. 1, the first housing 11, the second housing 21, and the third housing 31 are vertically and sequentially distributed; the first housing 11 is connected with the second housing 21; the second housing 21 is connected to the third housing 31; a first channel 4 capable of being opened and closed is arranged between the first shell 11 and the second shell 21, so that the first cavity 113 and the second cavity 213 can be controllably communicated or closed, and no channel is arranged between the second shell 21 and the third shell 31, so that the second cavity 213 and the third cavity 313 cannot be communicated; the first fan 13 and the second fan 23 are axial fans and are respectively arranged at the air-conditioning air outlet 112 and the purification air outlet 212 in a one-to-one correspondence manner; the first passage 4 is located between the evaporator 12 and the first fan 13 and between the purge assembly 22 and the second fan 23. Preferably, the evaporator 12 is disposed near the air conditioner intake 111; the purge assembly 22 is disposed proximate the purge inlet 211. The air conditioner inlet 111 and the purification inlet 211 are both provided with switchable windows. Referring to fig. 3, when the air conditioner inlet 111 is opened, the first channel 4 is opened, and the purification inlet 211 is closed, the fresh air purification and air conditioning all-in-one machine operates in the air conditioner strengthening mode. Indoor air flows in from the air conditioner air inlet 111, part of the indoor air flows out from the air conditioner air outlet 112 through the evaporator 12, and the other part of the indoor air flows out from the purification air outlet 212, so that the air quantity passing through the evaporator 12 is increased, the heat exchange efficiency of the evaporator 12 is improved, and air conditioning is accelerated. Referring to fig. 4, when the air conditioner air inlet 111 is closed, the first channel 4 is opened, and the purification air inlet 211 is opened, the fresh air purification and air conditioning all-in-one machine operates in a purification strengthening mode. Indoor air flows in from the purification air inlet 211, partially flows out from the air conditioner air outlet 112 through the purification assembly 22, and partially flows out from the purification air outlet 212, so that the air quantity passing through the purification assembly 22 is increased, the purification efficiency is improved, and the indoor air purification is accelerated. More than the utility model discloses an each mode has the intensive effect than each solitary functional mode, increases the mode of new trend purification air conditioner all-in-one, satisfies different users' different demands, improves user experience. Preferably, the first passage 4 is opened or closed by a first damper provided on the first passage 4; the air conditioner air inlet 111 and the purification air inlet 211 are respectively provided with a first shutter 14 and a second shutter 24 in a one-to-one correspondence manner; the first air door, the first shutter 14 and the second shutter 24 are respectively connected with the controller and controlled to be opened or closed by the controller; the first housing 11, the second housing 21, the third housing 31, the evaporator 12 and the purification assembly 22 are all provided according to the first embodiment.

In the third embodiment, referring to fig. 1, the first housing 11, the second housing 21, and the third housing 31 are vertically and sequentially distributed; the first housing 11 is connected with the second housing 21; the second housing 21 is connected to the third housing 31; there is no passage between the first housing 11 and the second housing 21, i.e. the first cavity 113 and the second cavity 213 cannot communicate; a switchable second channel 5 is arranged between the second shell 21 and the third shell 31, so that the second cavity 213 and the third cavity 313 can be controllably communicated or closed; the second fan 23 and the third fan 33 are axial fans and are respectively arranged at the purification air outlet 212 and the fresh air outlet 312 in a one-to-one correspondence manner; the second channel 5 is located between the purification component 22 and the second fan 23, and between the fresh air filter screen 32 and the third fan 33. The purification assembly 22 is disposed near the purification inlet 211; the fresh air filter screen 32 is arranged at the fresh air inlet 311. The purge air inlet 211 is provided as a switchable window. Referring to fig. 5, when the second channel 5 is opened and the purification air inlet 211 is closed, the fresh air purification and air conditioning all-in-one machine operates in a fresh air strengthening mode. The new trend flows in by new trend air intake 311, filters partly by purifying air outlet 212 outflow through new trend filter screen 32, and partly flows out by new trend air outlet 312 in the other, and the amount of wind that the increase new trend got into improves indoor air renewal speed. More than the utility model discloses a mode has the intensive effect than each solitary functional mode, increases the mode of new trend purification air conditioner all-in-one, satisfies different users' different demands, improves user experience.

Preferably, referring to fig. 1, the second passage 5 is opened or closed by a second damper provided on the second passage 5; a second shutter 24 is arranged on the purification air inlet 211; the second damper and the second louver 24 are arranged according to the first embodiment. The first casing 11, the second casing 21, the third casing 31, the purifying assembly 22 and the fresh air filter 32 are all provided as in the first embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a new trend purifies air conditioner all-in-one which characterized in that includes:

an air conditioning module including a first housing, an evaporator, and a first fan; the first shell comprises an air conditioner air inlet and an air conditioner air outlet; the evaporator and the first fan are both arranged in the first shell and are positioned between the air conditioner air inlet and the air conditioner air outlet;

the purification module comprises a second shell, a purification component and a second fan; the second shell comprises a purification air inlet and a purification air outlet; the purification assembly and the second fan are both arranged in the second shell and are positioned between the purification air inlet and the purification air outlet;

the fresh air module comprises a third shell, a fresh air channel, a fresh air filter screen and a third fan; the third shell comprises a fresh air inlet and a fresh air outlet; one end of the fresh air channel is communicated with the outside, and the other end of the fresh air channel is connected with the fresh air inlet and communicated with the third shell; the new trend filter screen the third fan all sets up in the third casing, and be located the new trend air intake with between the new trend air outlet.

2. The fresh air purifying and air conditioning all-in-one machine as claimed in claim 1, wherein the first fan and the second fan are axial fans and are respectively arranged at the air conditioner air outlet and the purifying air outlet in a one-to-one correspondence manner.

3. The integrated fresh air purifying and air conditioning machine according to claim 2, wherein the first housing is connected with the second housing, a switchable first channel is arranged between the first housing and the second housing, and the first channel is located between the evaporator and the first fan and between the purifying assembly and the second fan; the air conditioner air inlet and the purification air inlet are both provided with switchable windows; when the first channel is opened, the air conditioner air inlet is opened and the purification air inlet is closed, the mode is an air conditioner strengthening mode; and when the first channel is opened, the air conditioner air inlet is closed and the purification air inlet is opened, the purification strengthening mode is adopted.

4. The fresh air purifying and air conditioning all-in-one machine as claimed in claim 3, wherein the third fan is an axial flow fan and is arranged at the fresh air outlet; the second shell is connected with the third shell, a switchable second channel is arranged between the second shell and the third shell, and the second channel is positioned between the purification assembly and the second fan and between the fresh air filter screen and the third fan; when the first channel is closed, the second channel is opened and the purifying air inlet is closed, the mode is a fresh air strengthening mode.

5. The integrated fresh air purifying and air conditioning machine according to claim 4, further comprising a controller; the first passage passes through a first damper switch; the second channel passes through a second air door switch; the air conditioner air inlet and the purification air inlet are respectively provided with a first shutter and a second shutter; the first air door, the second air door, the first shutter and the second shutter are respectively connected with the controller and controlled to be opened or closed by the controller.

6. The fresh air purifying and air conditioning all-in-one machine as claimed in claim 1, wherein the second fan and the third fan are axial fans and are respectively arranged at the purification air outlet and the fresh air outlet in a one-to-one correspondence manner.

7. The fresh air purifying and air conditioning all-in-one machine as claimed in claim 6, wherein the second casing is connected with the third casing, a switchable second channel is arranged between the second casing and the third casing, and the second channel is positioned between the purifying assembly and the second fan and between the fresh air filtering net and the third fan; when the second channel is opened and the second shutter is closed, the mode is a fresh air strengthening mode.

8. The integrated fresh air purifying and air conditioning machine according to claim 7, further comprising a controller; the second channel passes through a second air door switch; a second shutter is arranged at the purification air inlet; the second air door and the second shutter are respectively connected with the controller and controlled to be opened or closed by the controller.

9. The fresh air purifying and air conditioning all-in-one machine as claimed in any one of claims 1 to 8, wherein the air conditioner air inlet, the purifying air inlet and the fresh air inlet are respectively arranged at the rear parts of the first shell, the second shell and the third shell in a one-to-one correspondence manner; the air conditioner air outlet, the purification air outlet and the fresh air outlet are respectively arranged in the front of the first shell, the second shell and the third shell in a one-to-one correspondence mode.

10. The integrated fresh air purifying and air conditioning machine according to claim 9, wherein the evaporator is arranged on a longitudinal section parallel to the air inlet of the air conditioner in the first shell; the purification assembly is arranged on a longitudinal section parallel to the purification air inlet in the second shell; the fresh air filter screen is arranged in the third shell and is parallel to the longitudinal section of the fresh air inlet.