Air handling unit

Abstract

This invention proposes an air handling device, specifically comprising a housing, a first impeller, a purification screen, and an inlet baffle. The housing contains a receiving cavity, and the housing has an inlet and an outlet communicating with the receiving cavity. The first impeller is disposed within the receiving cavity. The purification screen is disposed adjacent to the inlet. The inlet baffle is disposed at the inlet and is used to open and close the inlet. When the inlet baffle is closed, a heating element is attached to the side of the inlet baffle facing the purification screen. The air handling device has a desorption mode. When the air handling device is in desorption mode, the heating element is activated, and the first impeller draws hot air near the heating element through the purification screen, carrying away pollutants desorbed by the heat from the screen and exiting through the outlet. Thus, this invention solves the problem of frequent replacement of the purification screen in existing air handling devices.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to an air handling device. Background Technology

[0002] Current air handling units primarily use adsorption to purify indoor pollutants such as formaldehyde and benzene. Formaldehyde and benzene are adsorbed onto a filter. However, the adsorbent is easily saturated, rendering it unable to remove further pollutants and requiring frequent filter replacement, which is inconvenient for users. In other words, existing air handling units suffer from the problem of needing frequent filter replacements. Summary of the Invention

[0003] This invention proposes an air handling device to solve the problem of the need for frequent replacement of the air purification screen in existing air handling devices.

[0004] To address the aforementioned problems, this invention proposes an air handling device. Specifically, the air handling device includes a housing, a first impeller, a purification screen, and an air inlet baffle. The housing has a receiving cavity, and the housing has an air inlet and an air outlet communicating with the receiving cavity. The first impeller is disposed within the receiving cavity. The purification screen is disposed adjacent to the air inlet. The air inlet baffle is disposed at the air inlet and is used to open and close the air inlet. A heating element is disposed on the air inlet baffle. The air handling device has a desorption mode. When the air handling device is in desorption mode, the heating element is turned on, and the first impeller rotates to drive hot air near the heating element to flow through the purification screen, carrying the pollutants desorbed by the heat from the purification screen out of the air outlet.

[0005] In an optional embodiment, the housing is further provided with an air outlet communicating with the accommodating cavity. The housing is also provided with an air outlet baffle and an exhaust air outlet baffle. When the air handling device is in desorption mode, the air outlet baffle closes the air outlet. The air handling device also has an adsorption mode. When the air handling device is in adsorption mode, the exhaust air outlet baffle blocks the accommodating cavity and the exhaust air outlet, the heating element is turned off, and the airflow flows in from the air inlet, passes through the purification screen, and flows out from the air outlet.

[0006] In one optional embodiment, the air inlet baffle includes a plurality of sub-baffles arranged in a louvered manner, and the heating element is attached to each of the sub-baffles.

[0007] In an alternative embodiment, when the air handling device is in desorption mode, the sub-baffle rotates to reduce or close the air inlet.

[0008] In one optional embodiment, the number of sub-baffles is not less than 2 and not more than 10.

[0009] In an optional embodiment, the heating element is an MCH ceramic heating element.

[0010] In one optional embodiment, the purification net includes a carrier and an adsorbent, the adsorbent being coated on the carrier, and the carrier being made of honeycomb ceramic, aluminum honeycomb, or silicon carbide.

[0011] In an optional embodiment, a fixing frame is further provided inside the housing, and the purification net is disposed inside the fixing frame. The fixing frame is detachably disposed inside the housing.

[0012] In an optional embodiment, the fixing frame is made of bulk molding compound, polyphenylene sulfide, polyarylsulfone, or polyetheretherketone.

[0013] In an optional embodiment, a volute is further provided inside the accommodating cavity, the first impeller is disposed inside the volute, the volute has a volute tongue, and the exhaust port baffle is disposed at the volute tongue.

[0014] In one alternative embodiment, the air handling device is an air conditioner.

[0015] In one optional embodiment, the air conditioner includes a housing, the housing being formed within the housing, and an air conditioner body is further disposed within the housing. A second impeller is disposed within the air conditioner body, and the air conditioner body is also provided with a main air inlet and a main air outlet.

[0016] Thus, this invention provides an air handling device. Specifically, the air handling device has a heating element installed at the air inlet baffle. A first impeller draws in hot air from near the heating element, causing the hot airflow to pass through a purification screen and carry the pollutants on the screen out through the exhaust port. In this way, this invention solves the problem of the need for frequent replacement of purification screens in existing air handling devices. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the air handling device of the present invention;

[0019] Figure 2 for Figure 1 Flow diagram of a first embodiment of an air handling unit in desorption mode;

[0020] Figure 3 for Figure 1 Flow diagram of a second embodiment of an air handling unit in desorption mode;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 1 A flow path diagram of an embodiment of an air handling unit in adsorption mode.

[0023] Explanation of icon numbers:

[0024] label name label name 100 Air handling unit 11 case 11a air inlet 11b air vent 11c exhaust vent 111 Air inlet baffle 112 Air vent baffle 113 Exhaust vent baffle 114 Snail shell 12 First Windmill 13 Purification net 14 heating element 20 Air conditioner main body

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0029] Current air handling units, which need to treat pollutants such as formaldehyde and benzene compounds, primarily employ adsorption for purification. This involves airflow entering the unit's casing through an inlet, passing through a purification screen, where pollutants like formaldehyde and benzene are adsorbed. This results in less pollutant air leaving the outlet, achieving purification through adsorption. However, the purification screen consists of a carrier and an adsorbent. The adsorbent, coated on the carrier, is responsible for adsorption. Existing adsorbents are easily saturated. Once saturated, the purification screen loses its purification function. This necessitates frequent disassembly and replacement, causing inconvenience for users. Furthermore, pollutants remaining on the screen, once saturated, can be easily carried into the room by the airflow, potentially causing secondary pollution.

[0030] Please see Figure 1 , Figure 2 , Figure 4 This invention proposes an air handling device 100. Specifically, the air handling device 100 includes a housing 11, a first impeller 12, a purification screen 13, and an air inlet baffle 111. The housing 11 has a receiving cavity, and the housing 11 has an air inlet 11a and an air outlet 11c communicating with the receiving cavity. The first impeller 12 is disposed within the receiving cavity. The purification screen 13 is disposed adjacent to the air inlet 11a. The air inlet baffle 111 is disposed at the air inlet 11a and is used to open and close the air inlet 11a. A heating element is disposed on the air inlet baffle 111.

[0031] In an optional embodiment, the heating element 14 is attached to the surface of the air inlet baffle 111. Further, the side on which the heating element 14 is attached is referred to as the heating surface, which is the side of the air inlet baffle 111 facing the purification screen 13 when the air inlet 11a is closed.

[0032] The air handling device 100 has a desorption mode. When the air handling device 100 is in the desorption mode, the heating element 14 is turned on, and the first impeller 12 is used to attract hot air near the heating element 14 to flow through the purification net 13, and carry the pollutants desorbed by heat on the purification net 13 out of the exhaust port 11c.

[0033] We found that during the adsorption process of the purification net 13, the adsorbent mainly adsorbs pollutants such as aldehydes and benzene. These pollutants also tend to accumulate within the adsorbent. Heating the adsorbent can catalyze the removal of pollutants. Through practice, we found that the pollutants can be desorbed when the temperature of the purification net 13 is between 70°C and 100°C. Therefore, we propose an air handling device 100 with a desorption mode, applying the principle of thermal desorption of pollutants to desorb the pollutants accumulated on the purification net 13 and discharge them outdoors through the exhaust vent 11c.

[0034] Specifically, the air inlet 11a connects to the indoor environment, and the exhaust outlet 11c connects to the outdoor environment. When the air handling unit 100 operates in exhaust mode, the heating element 14 located at the exhaust outlet baffle 113 activates and releases heat, thereby heating the air surrounding the heating element 14. The second fan then operates, drawing the hot air around the heating element 14 to the purification screen 13. The hot air passes through the purification screen 13, causing pollutants on the screen to desorb. At this time, the hot air carrying the pollutants from the purification screen 13 is discharged from the exhaust outlet 11c. The air handling unit 100 completes one cycle of the desorption mode.

[0035] Thus, when pollutants accumulate to a certain level on the purification net 13, the desorption mode of the air handling unit 100 can be activated to desorb the pollutants and discharge them outdoors. This restores the adsorption capacity of the purification net 13 without requiring its replacement. This solves the problem of users frequently needing to disassemble and replace the purification net 13. Furthermore, the desorption mode discharges pollutants located within the air handling unit 100 outdoors through the exhaust vent 11c, preventing the accumulation of pollutants within the air handling unit 100 and avoiding secondary pollution.

[0036] Please see Figure 5In an optional embodiment, the housing 11 is further provided with an air outlet 11b communicating with the accommodating cavity. The housing 11 is also provided with an air outlet baffle 112 and an exhaust air outlet baffle 113. When the air handling device 100 is in desorption mode, the air outlet baffle 112 blocks the air outlet 11b and the accommodating cavity. The air handling device 100 also has an adsorption mode. When the air handling device 100 is in adsorption mode, the exhaust air outlet baffle 113 blocks the accommodating cavity and the exhaust air outlet 11c, the heating element 14 is turned off, the airflow flows in from the air inlet 11a, passes through the purification net 13, and flows out from the air outlet 11b.

[0037] Specifically, in addition to the desorption mode, the air handling device 100 also has an adsorption mode. The adsorption mode is used to adsorb and purify indoor pollutants such as formaldehyde and benzene. In this mode, the purification screen 13 is not heated. The housing 11 also has an air outlet 11b facing indoors, and an air inlet 11a also faces indoors. The first impeller 12 moves, drawing in air with a high concentration of indoor pollutants through the air inlet 11a. This airflow then passes through the purification screen 13, during which the pollutants carried in the airflow are adsorbed by the purification screen 13. That is, after being purified by the purification screen 13, the airflow flows back into the room from the air outlet 11b. This completes the adsorption mode, i.e., the process of purifying indoor air. In another embodiment, the air inlet 11a can also face outdoors, in which case the purification screen 13 is used to adsorb pollutants in the airflow flowing in from the outside.

[0038] Furthermore, during the adsorption process, indoor pollutants accumulate on the purification net 13. A sensor can also be installed on the purification net 13. When the sensor detects that the pollutants on the purification net 13 have accumulated to a threshold, the air handling device 100 switches from adsorption mode to desorption mode, desorbing the pollutants on the purification net 13 and discharging them outdoors. In addition to the automatic switching scheme, the air handling device proposed in this invention can also be manually switched to adjust the adsorption and desorption modes. The air handling device 100 is also equipped with an indicator light connected to the sensor. The user can use this indicator light to determine whether the pollutants on the purification net 13 have accumulated to the threshold and whether to turn the desorption mode on or off.

[0039] Meanwhile, to prevent interference between the adsorption and desorption flow paths of the air handling unit 100, when the air handling unit 100 is in adsorption mode, the exhaust port baffle 113 blocks the first impeller 12 and the exhaust port 11c, while the air inlet 11a and the air outlet 11b are open to the first impeller 12. When the air handling unit 100 is in desorption mode, the exhaust port baffle 112 blocks the air outlet 11b, while the first impeller 12 is open to the air inlet 11a and the exhaust port 11c.

[0040] Please see Figure 3 , Figure 4 In an optional embodiment, the air inlet baffle 111 includes multiple sub-baffles arranged in a louvered shape, and each sub-baffle is attached with a heating element 14. That is, the number of heating elements 14 is multiple. Compared with a one-piece exhaust baffle 113, the multiple sub-baffles arranged in a louvered shape can attach multiple heating elements 14, thereby achieving a better heating effect. This ensures that the air near the air inlet baffle 111 is fully heated, ensuring that the air temperature flowing into the purification screen 13 meets the requirements. In addition, the louvered sub-baffles have certain advantages in adjusting the size of the air inlet 11a. By adjusting the rotation angle of the sub-baffles, the size of the air inlet 11a can be adjusted, thereby controlling the airflow rate flowing into the air inlet 11a.

[0041] To achieve better heating performance, certain requirements are placed on the positioning of the heating element 14 within the air inlet baffle 111. Specifically, when the air inlet 11a is closed by the air inlet baffle 111, the heating element 14 should be located on the side of the air inlet baffle 111 facing the purification screen 13, rather than the side facing the outside. This ensures that the heating element 14 is positioned within the airflow path during desorption mode.

[0042] Please see Figure 3 In one optional embodiment, the number of sub-baffles is not less than 2 and not more than 10. This range of sub-baffle numbers balances manufacturing cost, adjustment effect, and operational difficulty. In one embodiment, the number of sub-baffles is 5. Furthermore, the air handling device 100 is also provided with driving components for driving the sub-baffles. The number of driving components can correspond one-to-one with the number of sub-baffles, driving them individually. Alternatively, the number of driving components can be reduced to drive multiple sub-baffles simultaneously.

[0043] Please see Figure 2 , Figure 3In one optional embodiment, when the air handling device 100 is in desorption mode, the sub-baffle rotates to reduce or close the air inlet 11a. Specifically, when the air handling device 100 is in desorption mode, the air inlet 11a can maintain the same size as in adsorption mode. This results in a larger flow rate of external airflow. Therefore, the present invention proposes an air handling device 100 that, in desorption mode, reduces the air inlet 11a by adjusting the rotation angle of the air inlet baffle 111. This reduces the airflow from the air inlet 11a, allowing the airflow passing through the purification screen 13 to be sufficiently heated. This function can also be achieved by adjusting the power of the second impeller. Furthermore, reducing the air inlet 11a while keeping the power of the second impeller constant also has the effect of simulating a negative pressure environment. In a near-negative pressure environment, hot air passing through the purification screen 13 can carry away more pollutants. In another embodiment, the sub-baffle rotates to close the air inlet 11a. At this time, the airflow is at its minimum. The airflow flows in from the processing gap between the sub-baffles. This simulates a negative pressure environment to the greatest extent possible, achieving a better adsorption effect.

[0044] In an optional embodiment, the heating element 14 is an MCH ceramic heating element. Compared with conventional heating elements 14, the MCH heating element 14 has a longer service life, and also has advantages such as easy temperature control, fast heating speed, and environmental friendliness. Furthermore, unlike conventional heating elements 14, the MCH ceramic heating element 14 does not require a large airflow to generate heat during heating. Therefore, the MCH ceramic heating element 14 is particularly suitable for situations where the exhaust vent 11c is reduced or closed.

[0045] In an optional embodiment, the purification net 13 includes a carrier and an adsorbent, the adsorbent being coated on the carrier, which is made of honeycomb ceramic, aluminum honeycomb, or silicon carbide. We have found that during the adsorption process of the purification net 13, the adsorbent primarily adsorbs pollutants such as aldehydes and benzene. These pollutants also tend to accumulate within the adsorbent. Heating the adsorbent can catalyze the removal of pollutants. Through practice, it has been found that when the temperature of the purification net 13 is between 70°C and 100°C, the pollutants can be desorbed.

[0046] To better support the adsorbent, the carrier is often arranged in a mesh structure. Alternatively, the carrier can also be other shapes that facilitate the coating of the adsorbent and the filtration of the airflow. Optionally, the adsorbent is a zeolite adsorbent, also known as a molecular sieve. Based on the previous embodiment, the adsorbent is a composite zeolite adsorbent system, comprising one or more different zeolites. The silica-to-alumina ratio of these zeolites varies from 20 to 900. By changing parameters such as the type of zeolite, the coating amount, and the silica-to-alumina ratio, the adsorption performance of the module for formaldehyde, toluene, and various other pollutants can be adjusted. Therefore, the purification mesh 13 can be adjusted in performance according to actual usage requirements to achieve different purification effects.

[0047] Based on the previous optional embodiment, the carrier material is honeycomb ceramic, aluminum honeycomb, or silicon carbide. These materials have good loading capacity and can adsorb a large amount of zeolite adsorbent. Furthermore, these materials have strong heat resistance, and carriers made from them can withstand repeated heating and desorption processes. This greatly extends the service life of the purification mesh 13. Besides the above-mentioned materials, other heat-resistant materials with a certain loading capacity can also be used to make the carrier.

[0048] In an optional embodiment, a fixing frame is further provided inside the housing 11, and the purification mesh 13 is disposed within the fixing frame. The fixing frame is detachably connected to the housing 11. Optionally, the fixing frame is detachably installed in the air inlet direction, and the fixing frame is installed inside the housing 11 near the air inlet 11a by means of buckles or screws.

[0049] In an optional embodiment, the fixing frame is made of bulk molding compound (BMC), polyphenylene sulfide (PPS), polyarylsulfone (PAR), or polyetheretherketone (PEEK). Since the purification net 13 is disposed within the fixing frame and is frequently heated, the material of the fixing frame needs to have a certain degree of heat resistance. Besides the materials mentioned above, other materials with good heat resistance can also be used to manufacture the fixing frame.

[0050] In an optional embodiment, a volute 114 is further provided within the accommodating cavity, the first impeller 12 is disposed within the volute 114, the volute 114 has a volute tongue, and the exhaust port baffle 113 is disposed at the volute tongue. Specifically, the volute tongue has a mounting structure for mounting the exhaust port baffle 113, and the exhaust port baffle 113 is rotatably mounted at the volute tongue. When the exhaust port baffle 113 blocks the exhaust port 11c and the first impeller 12, the exhaust port baffle 113 is disposed at the extension of the volute tongue. When the first impeller 12 and the exhaust port 11c are connected, the exhaust port baffle 113 is attached to the volute 114.

[0051] Specifically, a fan typically includes a rotor and a volute 114 for housing the rotor. The volute 114 has an air outlet, and the connection between the volute 114 and the air outlet often has a tongue-shaped structure formed by the shell wall, called the volute tongue. Its function is to prevent some of the gas from circulating within the volute 114. When the airflow at the outlet of the rotating rotor blade channel passes near the volute tongue, the tongue splits it in two: most of the airflow flows along the channel to the fan outlet; a small portion of the airflow flows back to the volute 114 through the gap between the volute tongue and the rotor, and after rotating once within the volute 114 with the rotor, it returns to the volute tongue to participate in a new split.

[0052] Compared to the configuration where the exhaust vent baffle 113 is located at the exhaust vent 11c, or where the exhaust vent baffle 113 is formed separately within the housing 11, the exhaust vent baffle 113 is rotatably mounted at the volute tongue, providing better guidance. Furthermore, the exhaust vent baffle 113's placement at the volute tongue effectively reduces noise generated by the first impeller 12. To achieve this, the shape and dimensions of the exhaust vent baffle 113 can be specifically calculated and designed. In another embodiment, the exhaust vent baffle 112 may also be louvered.

[0053] In one optional embodiment, the air handling device 100 is an air conditioner. Alternatively, the air handling device 100 can also be a fresh air system, an air purifier, etc. That is, the air handling device 100 described above can be used independently to purify indoor pollutants. It can also be used as an adsorption-desorption module, installed in common air handling equipment such as fresh air systems, air purifiers, and air conditioners, to achieve the integration and diversification of these devices' functions, thereby meeting diverse user needs.

[0054] In one optional embodiment, the air conditioner includes a housing, a casing 11 formed therein, and an air conditioner body 20 disposed within the housing. A second impeller is disposed within the air conditioner body 20, and the air conditioner body 20 also has a main air inlet 11a and a main air outlet 11b. In one embodiment, the first impeller 12 and the second impeller may be coaxially arranged. In another embodiment, a desorption module is disposed inside the casing 11. This desorption module can be used independently to adsorb indoor pollutants such as formaldehyde and also has the function of desorbing pollutants from the purification mesh 13. Alternatively, the desorption module can be integrated into the air conditioner body 20.

[0055] In one embodiment, the desorption module is integrated into the indoor unit of an air conditioner, which includes a housing. A housing 11 is formed part of the housing, or the housing 11 and the housing are detachably connected. An air conditioner body 20, i.e., the indoor unit body, is also disposed within the housing. Correspondingly, the housing also has a main air inlet 11a and a main air outlet 11b. The adsorption module can be activated and operated in either adsorption or desorption mode as needed to purify indoor air pollutants.

[0056] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An air handling device, characterized in that, include: A housing, wherein a receiving cavity is provided inside the housing, and an air inlet and an air outlet communicating with the receiving cavity are provided on the housing; The first impeller is disposed within the accommodating cavity; A purification screen is disposed adjacent to the air inlet; An air inlet baffle is disposed at the air inlet and is used to open and close the air inlet. A heating element is disposed on the air inlet baffle. The air inlet baffle includes multiple sub-baffles arranged in a louvered shape, and multiple heating elements are attached to the multiple sub-baffles. When the multiple sub-baffles close the air inlet, the heating element is located on the side of the sub-baffle facing the purification mesh, and there is a gap between the multiple sub-baffles. The air handling device has a desorption mode. When the air handling device is in the desorption mode, the sub-baffle rotates to reduce or close the air inlet, the heating element is turned on, and the first impeller rotates to drive the hot air near the heating element to flow through the purification screen and carry the pollutants desorbed by the heat on the purification screen out of the exhaust port.

2. The air handling apparatus as claimed in claim 1, characterized in that, The housing is also provided with an air outlet communicating with the accommodating cavity. The housing is also provided with an air outlet baffle and an exhaust air outlet baffle. When the air handling device is in the desorption mode, the air outlet baffle closes the air outlet. The air handling device also has an adsorption mode. When the air handling device is in adsorption mode, the exhaust port baffle closes the exhaust port, the heating element is turned off, and the airflow flows in from the air inlet, passes through the purification screen, and flows out from the air outlet.

3. The air handling apparatus as described in claim 1, characterized in that, The heating element is attached to each of the sub-baffles.

4. The air handling apparatus as claimed in claim 1, characterized in that, The number of sub-baffles shall be no less than 2 and no more than 10.

5. The air handling apparatus as described in claim 2, characterized in that, The heating element is an MCH ceramic heating element.

6. The air handling apparatus as claimed in claim 2, characterized in that, The purification net includes a carrier and an adsorbent. The adsorbent is coated on the carrier, and the carrier is made of honeycomb ceramic, aluminum honeycomb, or silicon carbide.

7. The air handling apparatus as claimed in claim 6, characterized in that, The housing is also provided with a fixing frame, and the purification net is disposed in the fixing frame. The fixing frame is detachably disposed in the housing.

8. The air handling apparatus as claimed in claim 7, characterized in that, The fixing frame is made of bulk molding compound, polyphenylene sulfide, polyarylsulfone, or polyetheretherketone.

9. The air handling apparatus as claimed in claim 2, characterized in that, The accommodating cavity is also provided with a volute, the first impeller is disposed in the volute, the volute has a volute tongue, and the exhaust port baffle is disposed at the volute tongue.

10. The air handling apparatus according to any one of claims 1 to 9, characterized in that, The air handling device is an air conditioner.

11. The air handling apparatus as claimed in claim 10, characterized in that, The air conditioner includes an outer casing, the housing is formed in the outer casing, and an air conditioner body is also disposed inside the outer casing, and a second impeller is disposed inside the air conditioner body.

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