CN219550682U - Centrifugal fan and air conditioner - Google Patents

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a centrifugal fan, which comprises: the centrifugal volute is provided with a volute inlet and a volute outlet; the outer periphery of the volute inlet is provided with a mounting frame; a screen assembly comprising a frame and a screen; the filter screen is installed in the frame, the frame is installed in the installation frame, and the filter screen covers the volute inlet. The screen assembly is integrated on the centrifugal volute. When the filter screen is used, the filter screen is firstly arranged in the frame, then the frame is arranged in the installation frame at the inlet of the volute, and the filter screen covers the inlet of the volute. When the centrifugal fan is started, air sequentially enters the centrifugal volute through the filter screen and the volute inlet, and finally is blown out from the volute outlet, so that the effect of filtering the air is achieved. The utility model also discloses an air conditioner.

Description

Centrifugal fan and air conditioner

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan and an air conditioner.

Background

The centrifugal fan is a machine for increasing the pressure of gas and discharging the gas by means of input mechanical energy. The centrifugal fan has the advantages of good ventilation effect, low noise, stable operation and the like, and has wide application in air conditioners.

The related art discloses an air conditioner, its centrifugal fan's air intake communicates in the air pipe, sets up filter equipment in the air pipe to filter the air that gets into centrifugal fan.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the installation of the filter device depends on the ventilation pipeline, and the ventilation pipeline is paved firstly during the installation, and then the filter device can be installed in the ventilation pipeline.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the utility model and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a centrifugal fan and an air conditioner, which solve the problem that the installation of a filtering device depends on a ventilation pipeline.

In some embodiments, the centrifugal fan comprises:

the centrifugal volute is provided with a volute inlet and a volute outlet; the outer periphery of the volute inlet is provided with a mounting frame;

a screen assembly comprising a frame and a screen; the filter screen is installed in the frame, the frame is installed in the installation frame, and the filter screen covers the volute inlet.

Optionally, the centrifugal volute includes:

a first housing;

the second shell and the first shell jointly enclose an air duct; and the volute inlet is formed in the second shell, and the mounting frame is arranged on the outer side of the second shell and is positioned at the periphery of the volute inlet.

Optionally, the first side of the mounting frame is free of a rim;

the frame is adapted to the inner edge of the mounting frame and is received in the mounting frame from a first side of the mounting frame.

Optionally, the frame has a gripping rim;

after the frame is installed into the installation frame, the holding frame edge is used as the frame edge of the first side of the installation frame.

Optionally, a handle is arranged on one side of the holding frame edge facing to the outside of the mounting frame.

Optionally, a first folded edge is arranged on the frame edge of the frame;

after the filter screen is arranged in the frame, the first folded edge abuts against one side, far away from the volute inlet, of the filter screen.

Optionally, a second folded edge is arranged on the frame edge of the mounting frame;

after the frame is installed in the installation frame, the second folded edge abuts against one side, away from the volute inlet, of the filter screen.

Optionally, a grid is arranged in the volute inlet.

Optionally, the volute inlet is configured as a circle and the mounting frame is configured as a rectangle.

In some embodiments, the air conditioner comprises a centrifugal fan as described in any of the embodiments above.

The centrifugal fan and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

the screen assembly is integrated on the centrifugal volute. When the filter screen is used, the filter screen is firstly arranged in the frame, then the frame is arranged in the installation frame at the inlet of the volute, and the filter screen covers the inlet of the volute. When the centrifugal fan is started, air sequentially enters the centrifugal volute through the filter screen and the volute inlet, and finally is blown out from the volute outlet, so that the effect of filtering the air is achieved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic cross-sectional view of a mobile air conditioner provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of a spray tube provided in an embodiment of the present disclosure;

FIG. 3 is a schematic view of a construction of a nebulizer provided by an embodiment of the disclosure;

FIG. 4 is a schematic structural view of a chassis provided by an embodiment of the present disclosure;

FIG. 5 is a schematic view of a structure of a midplane provided by an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a water flushing pipe according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a first housing provided by an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of a second housing provided by an embodiment of the present disclosure;

FIG. 9 is a schematic view of a boss provided by an embodiment of the present disclosure;

fig. 10 is a schematic structural view of a centrifugal fan provided in an embodiment of the present disclosure.

Reference numerals:

100: a housing; 110: a first compartment; 111: a first air inlet; 1111: a first portion; 1112: a second portion; 112: a first air outlet; 113: a first heat exchanger; 120: a second compartment; 121: a second heat exchanger; 1211: a first heat exchange section; 1212: a second heat exchange section; 130: a chassis; 131: a sewage area; 132: a water purifying device; 133: a water purification area;

200: a humidifying water pump; 210: a spray tube; 211: a water spraying hole; 220: an atomizer; 230: a flushing water pump; 231: a water flushing pipe;

300: a boss; 301: a first jack; 302: a second jack; 303: a first bayonet; 304: a second bayonet; 310: a first housing; 311: a first communication port; 312: a first pin; 313: a first hook; 320: a second housing; 321: a second communication port; 322: a second pin; 323: a second hook;

400: a middle partition plate; 410: a water collection area; 411: transverse ribs; 420: a drainage area; 421: a drain hole; 430: a straight-line region; 431: a straight exhaust port; 440: a lower housing;

500: centrifugal volute; 501: a first housing; 502: a second housing; 503: a volute inlet; 504: a volute outlet; 510: a frame; 511: a first hem; 512: holding the frame edge; 513: a handle; 520: a mounting frame; 521: a second flanging; 530: and (5) a filter screen.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in fig. 1, the disclosed embodiment provides a mobile air conditioner including a cabinet 100, a heat exchange assembly, and a blower assembly. The inside of the cabinet 100 is partitioned into a first compartment 110 and a second compartment 120 by a middle partition 400 and an upper scroll, and the second compartment 120 is located above the first compartment 110. The first compartment 110 is provided with a first air inlet 111 and a first air outlet 112, and the second compartment 120 is provided with a second air inlet and a second air outlet. The heat exchange assembly comprises a first heat exchanger 113 and a second heat exchanger 121, wherein the first heat exchanger 113 is arranged in the first compartment 110, and the second heat exchanger 121 is arranged in the second compartment 120. The fan assembly includes a first fan disposed in the first compartment 110 and a second fan disposed in the second compartment 120. Under the action of the first fan, air enters the first compartment 110 from the first air inlet 111, exchanges heat with the first heat exchanger 113, and leaves the first compartment 110 from the first air outlet 112; under the action of the second fan, air enters the second compartment 120 from the second air inlet, exchanges heat with the second heat exchanger 121, and leaves the second compartment 120 from the second air outlet. Here, the second air inlet and the second air outlet are both communicated with the indoor, i.e., the second heat exchanger 121 is used for exchanging heat with the indoor air.

The refrigerant circulation system of the mobile air conditioner is composed of at least a compressor, a first heat exchanger 113, a throttling device and a second heat exchanger 121. In the refrigeration mode, the circulation flow direction of the refrigerant circulation system is as follows: a compressor, a first heat exchanger 113, a throttling device, a second heat exchanger 121, and a compressor, wherein the first heat exchanger 113 serves as a condenser and the second heat exchanger 121 serves as an evaporator; in the heating mode, the circulation flow direction of the refrigerant circulation system is as follows: the compressor, the second heat exchanger 121, the throttling device, the first heat exchanger 113 and the compressor, wherein the first heat exchanger 113 serves as an evaporator and the second heat exchanger 121 serves as a condenser.

In some embodiments, the bottom of the first compartment 110, that is, the bottom plate 130 of the casing 100, is provided with a water purifying area 133, and the condensed water of the first heat exchanger 113 is collected into the water purifying area 133 after being filtered. The mobile air conditioner further comprises a humidifying component, wherein the humidifying component comprises a humidifying water pump 200 and a humidifying part; the humidifying part is arranged in the second compartment 120 and corresponds to the second heat exchanger 121, and is used for spraying condensed water to the second heat exchanger 121; the water inlet end of the humidifying water pump 200 is connected to the water purifying region 133, and the water outlet end thereof is connected to the humidifying portion, so as to supply the condensed water in the water purifying region 133 to the humidifying portion.

In this embodiment, the condensed water generated during the heat exchange of the first heat exchanger 113 is filtered and collected in the water purifying area 133, so that the quality of the condensed water in the water purifying area 133 is better. The second heat exchanger 121 is used as a condenser in a heating mode, and when humidification is required in a room, the humidifying water pump 200 is started, and condensed water in the water purifying area 133 is pumped to the humidifying part, and the humidifying part sprays the condensed water to the second heat exchanger 121. The second heat exchanger 121 heats and evaporates the condensed water into water vapor, and the water vapor enters the room to play a role of humidification in the process of heat exchange between the second heat exchanger 121 and the indoor air.

Alternatively, as shown in fig. 2, the humidifying part includes a spray pipe 210, a plurality of water spray holes 211 are provided on a pipe wall thereof, and the water spray holes 211 face the second heat exchanger 121. In the case where the humidifying water pump 200 is activated, the condensed water of the purified water zone 133 is pumped to the spraying pipe 210, and the spraying pipe 210 sprays the condensed water to the second heat exchanger 121 through the water spray hole 211.

Alternatively, the plurality of water spray holes 211 are uniformly distributed along the extension direction of the spray pipe 210. In this way, the condensed water sprayed on the second heat exchanger 121 by the spraying pipe 210 is made relatively uniform.

Alternatively, the diameter of the water spray holes 211 may range from 1mm to 3mm.

Illustratively, the apertures of the water jet holes 211 may be selected to be 1mm, 1.5mm, 2mm, 2.5mm, or 3mm.

Alternatively, the humidifying water pump 200 is disposed in the first compartment 110 or the second compartment 120, the water inlet end of which is connected to the water purifying area 133, and the water outlet end of which is connected to the water inlet of the spraying pipe 210.

Illustratively, the humidifying water pump 200 is disposed in the first compartment 110, and the water outlet end of the humidifying water pump 200 is provided with a connection pipe extending from the first compartment 110 to the second compartment 120 and communicating with the water inlet of the spray pipe 210.

Alternatively, as shown in FIG. 2, the second heat exchanger 121 is configured as a two-stage heat exchanger, including a first heat exchange section 1211 and a second heat exchange section 1212. Wherein the second heat exchange section 1212 is disposed adjacent to and below the first heat exchange section 1211; also, the spray pipe 210 extends in a gap separating the first heat exchange section 1211 and the second heat exchange section 1212, and the water spray hole 211 is directed toward the second heat exchange section 1212.

In this embodiment, the plate surface of the second heat exchange section 1212 is vertically disposed, the plate surface of the first heat exchange section 1211 is disposed at an oblique angle to the plate surface of the second heat exchange section 1212, and a certain gap is provided between the first heat exchange section 1211 and the second heat exchange section 1212. The spray pipe 210 extends along the gap and sprays the condensed water toward the second heat exchange section 1212, evaporating the condensed water using heat of the second heat exchange section 1212.

Optionally, the length of the spray tube 210 coincides with the length of the second heat exchange section 1212. In this way, the spray tube 210 is prevented from being excessively long to interfere with other members, and the spray tube 210 can form a large spray area.

Alternatively, as shown in fig. 3, the humidifying part includes an atomizer 220, and an atomizing port of the atomizer 220 faces the second heat exchanger 121. The atomizer 220 is adopted to spray the condensed water to the second heat exchanger 121, so that the condensed water is more uniformly sprayed on the second heat exchanger 121 under the effect of the atomization function of the atomizer 220, and the effect of evaporating the condensed water by the second heat exchanger 121 is better.

Optionally, the second heat exchanger 121 is configured as a two-stage heat exchanger, comprising a first heat exchange section 1211 and a second heat exchange section 1212. Wherein the second heat exchange section 1212 is disposed adjacent to and below the first heat exchange section 1211; and, the atomizing port sprays water mist to both the first heat exchange section 1211 and the second heat exchange section 1212.

In this embodiment, the plate surface of the second heat exchange section 1212 is vertically disposed, the plate surface of the first heat exchange section 1211 is disposed at an oblique angle to the plate surface of the second heat exchange section 1212, and a certain gap is provided between the first heat exchange section 1211 and the second heat exchange section 1212. The atomizer 220 is disposed at the outer side of the gap, and the atomizing port thereof sprays water mist to the first heat exchange section 1211 and the second heat exchange section 1212 at the same time, and the condensed water is evaporated by using the heat of the first heat exchange section 1211 and the second heat exchange section 1212, so that the humidifying efficiency is high.

Optionally, the humidifying water pump 200 is disposed in the first chamber 110 or the second chamber 120, the water inlet end of which is connected to the water purifying area 133, and the water outlet end of which is connected to the water inlet of the atomizer 220.

Illustratively, the humidifying water pump 200 is disposed in the first compartment 110, and the water outlet end of the humidifying water pump 200 is provided with a connecting pipe extending from the first compartment 110 to the second compartment 120 and communicating with the water inlet of the atomizer 220.

In some embodiments, as shown in fig. 5, a middle barrier 400 is positioned between the first heat exchanger 113 and the second heat exchanger 121, including a water collection area 410 and a drainage area 420; wherein, the water collecting area 410 corresponds to the second heat exchanger 121 and is used for receiving condensed water thereof; the drain region 420 communicates with the water collecting region 410, and the drain region 420 drains condensed water to the first heat exchanger 113 through a drain.

In the present embodiment, the first heat exchanger 113 serves as a condenser and the second heat exchanger 121 serves as an evaporator in the cooling mode, and condensed water generated when the second heat exchanger 121 exchanges heat is collected to the water collection area 410. The condensed water in the water collecting area 410 then flows to the water draining area 420, and finally the water draining area 420 drains the condensed water to the first heat exchanger 113 through the water draining part, and exchanges heat with the first heat exchanger 113 with a higher temperature by using the condensed water with a lower temperature, so that the heat exchange efficiency of the first heat exchanger 113 serving as a condenser is improved.

Alternatively, the drainage area 420 corresponds to the first heat exchanger 113, and the drainage part includes a plurality of drainage holes 421, and the plurality of drainage holes 421 are disposed in the drainage area 420 and all face the first heat exchanger 113.

In the present embodiment, the drain region 420 is located above the first heat exchanger 113, and the drain hole 421 is disposed along the extending direction of the first heat exchanger 113. The condensed water of the water collecting region 410 flows to the water discharge region 420, and the condensed water of the water discharge region 420 flows to the first heat exchanger 113 through the plurality of water discharge holes 421.

Alternatively, the drain hole 421 is formed with a protrusion at its periphery upward, and the protrusion is provided with a notch.

In the present embodiment, when the water level of the condensed water in the drain area 420 is higher than the notch on the protrusion, the condensed water flows to the first heat exchanger 113 through the drain hole 421. And the tension of water can be broken under the effect of the notch, thereby being beneficial to smooth circulation of condensed water.

Optionally, the level of the drain region 420 is lower than the level of the water collection region 410. The condensed water in the water collecting area 410 is facilitated to flow to the water draining area 420 by the height difference.

Optionally, the middle partition 400 further includes a straight drainage area 430, the straight drainage area 430 is communicated with the drainage area 420, and condensed water which is not drained to the first heat exchanger 113 in the drainage area 420 is drained to the straight drainage area 430; and, the in-line area 430 communicates with the outside of the cabinet 100.

In the present embodiment, when the amount of the condensed water is large, it is difficult to timely drain the condensed water only through the drain hole 421. At this time, the condensed water not discharged to the first heat exchanger 113 flows to the straight drain region 430, and the condensed water of the straight drain region 430 may be directly discharged to the outside of the cabinet 100.

Optionally, the level of the in-line zone 430 is lower than the drainage zone 420. The condensed water of the drainage area 420 is facilitated to flow to the straight drainage area 430 by the height difference.

Optionally, the drainage area 420 communicates with the in-line area 430 through a slope. The condensed water of the drainage area 420 smoothly flows to the straight drainage area 430 under the action of the inclined surface.

Optionally, the water collection area 410 is provided with transverse ribs 411, the transverse ribs 411 being used to support the second heat exchanger 121. Here, the positions of the lateral ribs 411 correspond to the bottom of the second heat exchanger 121, and the number of the lateral ribs 411 may be plural, thereby supporting the bottom of the second heat exchanger 121.

Optionally, an upper volute is further disposed within the housing 100, the upper volute being located above the middle partition 400, the upper volute comprising an upper housing and a lower housing 440. The lower housing 440 and the upper housing define an air channel, and an air channel inlet of the air channel corresponds to the water collecting area 410, so that condensed water in the air channel flows to the water collecting area 410. A second fan is provided in the air duct of the upper volute, and condensed water in the air duct can flow from the air duct inlet to the water collection area 410.

Alternatively, the lower housing 440 is integrally formed with the middle partition 400, and a portion of the lower housing 440 constituting the air duct inlet is connected to the water collection area 410. Thus, the middle barrier 400 and the lower case 440 divide the interior of the cabinet 100 into the first compartment 110 and the second compartment 120.

In some embodiments, the mobile air conditioner further includes a flushing water pump 230, wherein a water inlet end of the flushing water pump 230 is connected to the water purifying area 133, and a water outlet end of the flushing water pump is used for being connected to the in-line area 430; the rinse water pump 230 may pump the condensed water in the purified water zone 133 to the in-line zone 430 to rinse the in-line zone 430.

In this embodiment, the condensed water generated during the heat exchange of the first heat exchanger 113 is filtered and collected in the water purifying area 133, so that the quality of the condensed water in the water purifying area 133 is better. Condensed water generated during heat exchange of the second heat exchanger 121 is collected in the straight-drain region 430, and as the quality of the condensed water in the straight-drain region 430 which is not filtered is poor, more impurities are attached in the straight-drain region 430. When the in-line area 430 needs to be flushed, the flushing water pump 230 is started to pump the condensed water in the clean water area 133 to the in-line area 430, so that the in-line area 430 is flushed with clean condensed water.

Alternatively, as shown in fig. 5, the in-line area 430 discharges condensed water to the outside of the casing 100 through the in-line discharge 431; the water outlet end of the flushing water pump 230 is provided with a flushing pipe 231, and the flushing pipe 231 is used for communicating with the straight discharge port 431. When the flushing water pump 230 is started, the condensed water in the water purifying area 133 flows from the in-line outlet 431 to the in-line outlet 430 through the water pipe 231, and thus flushing is performed.

Optionally, the in-line outlet 431 is provided with a pipe connection for connecting the flushing pipe 231. The coupler is adapted to the end of the flush tube 231.

Alternatively, the in-line outlet 431 protrudes outside the casing 100; the water flushing pipe 231 is disposed outside the casing 100, and has a first end connected to the water outlet end of the flushing pump 230 and a second end for communicating with the in-line outlet 431. In this way, the user can conveniently connect the flushing pipe 231 to the straight discharge port 431 at the outside of the cabinet 100.

Optionally, a hook is provided on the outside of the casing 100 for hanging the flush tube 231. In this way, the flush tube 231 can be hung outside the casing 100 by the hook.

Optionally, the mobile air conditioner further includes a prompting device configured to send out a flushing prompt after the mobile air conditioner operates for a set time, so as to remind a user to connect the flushing pipe 231 to the in-line outlet 431.

Illustratively, the mobile air conditioner is determined to be dirty in the in-line area 430 and needs to be flushed after running for 500 hours, and the prompting device lights a yellow lamp to prompt the user. After the user sees the yellow light on, the flush tube 231 is connected to the in-line outlet 431 to flush the in-line area 430.

Optionally, the septum 400 further includes a drainage area 420. The drainage area 420 is communicated with the straight drainage area 430, and the drainage area 420 drains water to the first heat exchanger 113 through the drainage holes 421; the condensed water pumped to the straight drain area 430 by the washing water pump 230 may flow to and wash the drain area 420.

In the present embodiment, the drain hole 421 has a small diameter, and is likely to be clogged when the quality of the condensed water in the second heat exchanger 121 is poor. When the filth blockage occurs, the flushing water pump 230 is started to pump the condensed water in the water purifying area 133 to the direct drainage area 430, and the condensed water in the direct drainage area 430 flows to the drainage area 420, so that the drainage hole 421 is flushed with the clean condensed water. The washed condensed water flows to the first heat exchanger 113 along the drain hole 421, and the part of the condensed water and the condensed water newly generated by the first heat exchanger 113 flow to the sewage area 131 on the bottom plate 130, and finally flows to the water purifying area 133 after being filtered.

Optionally, the level of the in-line area 430 is lower than that of the drainage area 420, and the condensed water pumped to the in-line area 430 by the flushing water pump 230 overflows to the drainage area 420.

Optionally, as shown in fig. 4, the chassis 130 of the casing 100 is further provided with a sewage area 131, and the sewage area 131 is communicated with the water purifying area 133 through the water purifying device 132; the condensed water of the first heat exchanger 113 is first collected in the sewage area 131, and then filtered by the water purifying device 132 to flow to the water purifying area 133.

Alternatively, the condensed water in the sewage area 131 may be discharged to the outside of the cabinet 100 through a pipe. In this way, in the case that the water level of the water purifying zone 133 is high, the condensed water of the sewage zone 131 can be directly discharged to the outside.

In some embodiments, as shown in fig. 7-9, the first air outlet 112 is communicated with the outside of the room through an air outlet pipe, and the mobile air conditioner further comprises an air inlet assembly. The air inlet assembly is disposed at the first air inlet 111 and includes a first housing 310 or a second housing 320; the first housing 310 is provided with a first communication port 311, and the first communication port 311 is used for being communicated with the outside through an air inlet pipe; the second housing 320 is provided with a second communication port 321, and the second communication port 321 is used for communicating with the indoor space; when the first housing 310 is installed at the first air inlet 111, the first heat exchanger 113 exchanges heat with outdoor air; when the second housing 320 is installed at the first air inlet 111, the first heat exchanger 113 exchanges heat with indoor air.

In the present embodiment, the mobile air conditioner can realize switching between the single duct mode and the dual duct mode by selectively installing the first casing 310 or the second casing 320. In case that the first heat exchanger 113 and the outdoor air are required to exchange heat, the first cover 310 is installed at the first air inlet 111, and then the air inlet duct is connected at the first communication port 311. In this way, the outdoor air sequentially passes through the air inlet pipe and the first communication port 311 to enter the first compartment 110, thereby exchanging heat with the first heat exchanger 113, and realizing a dual air pipe mode. In case that the first heat exchanger 113 and the indoor air are required to exchange heat, the second casing 320 is installed at the first air intake 111. In this way, indoor air enters the first compartment 110 through the second communication port 321, thereby exchanging heat with the first heat exchanger 113, and realizing a single air duct mode. Thus, the user can select different air duct modes according to different use situations.

Optionally, as shown in fig. 9, the first air intake 111 includes a first portion 1111 and a second portion 1112; the first communication port 311 of the first housing 310 corresponds to the first portion 1111, and the housing of the first housing 310 shields the second portion 1112; the second communication port 321 of the second housing 320 corresponds to the second portion 1112, and the housing of the second housing 320 shields the first portion 1111.

In the present embodiment, if the first housing 310 is installed at the first air inlet 111, since the first housing 310 shields the second portion 1112, the outdoor air sequentially passes through the air inlet pipe, the first communication port 311, and the first portion 1111 to enter the first compartment 110. If the second casing 320 is installed at the first air inlet 111, the second casing 320 shields the first portion 1111, so that the indoor air sequentially enters the first chamber 110 through the second communication port 321 and the second portion 1112.

Alternatively, the peripheral edge of the first communication port 311 protrudes toward the outside of the first chamber 110 to form a connection peripheral edge for connecting with the air inlet pipe. Thus, the air inlet pipe is convenient to connect through the connecting surrounding edge.

Alternatively, the first compartment 110 is located below the second compartment 120, and the first compartment 110 protrudes to one side to form the boss 300; the first portion 1111 is located at the top of the boss 300 and the second portion 1112 is located at the side of the boss 300. The first housing 310 is provided with a first pin 312, the top of the boss 300 is provided with a first jack 301, and the first housing 310 is inserted into the first jack 301 through the first pin 312. The first housing 310 is provided with a first hook 313, the side part of the boss 300 is provided with a first bayonet 303, and the first housing 310 is clamped to the first bayonet 303 through the first hook 313. For better replaceability, the first housing 310 and the second housing 320 have the same overall shape and fit with the first air inlet 111.

Illustratively, as shown in fig. 7, the first housing 310 is formed of two adjacent side surfaces and a top surface of a rectangular parallelepiped, and the top surface is provided with a first communication port 311, and the two side surfaces shield the second portion 1112. The plurality of first pins 312 are disposed around the first communication port 311, and the top of the boss 300 is provided with first insertion holes 301 corresponding to the plurality of first pins 312, respectively. A plurality of first hooks 313 are arranged at the edges of two adjacent side surfaces, and first bayonets 303 respectively corresponding to the plurality of first hooks 313 are arranged at the side parts of the boss 300. Thus, the top surface of the first housing 310 is inserted into the top of the boss 300 through the first pin 312, and two side surfaces of the first housing 310 are clamped to the side portions of the boss 300 through the first hooks 313.

Optionally, the second housing 320 is provided with a second pin 322, and the top of the boss 300 is provided with a second jack 302, and the second housing 320 is plugged into the second jack 302 through the second pin 322. The second cover 320 is provided with a second hook 323, the side part of the boss 300 is provided with a second bayonet 304, and the second cover 320 is clamped to the second bayonet 304 through the second hook 323.

Illustratively, as shown in fig. 8, the second housing 320 is formed of two adjacent side surfaces of a rectangular parallelepiped and one top surface, on which the second communication port 321 is opened, the top surface shielding the first portion 1111. The plurality of second pins 322 are disposed on the top surface, and the top of the boss 300 is provided with second insertion holes 302 corresponding to the plurality of second pins 322 respectively. A plurality of second hooks 323 are arranged at the edges of two adjacent side surfaces, and second bayonets 304 respectively corresponding to the second hooks 323 are arranged at the side parts of the boss 300. Thus, the top surface of the second housing 320 is inserted into the top of the boss 300 through the second pin 322, and two side surfaces of the second housing 320 are clamped to the side portions of the boss 300 through the second hooks 323.

Optionally, the first air outlet 112 is disposed at the top of the boss 300. In this way, the placement of the outlet duct is facilitated by the boss 300.

Optionally, the periphery of the first air outlet 112 protrudes towards the outer side of the first compartment 110 to form a connection surrounding edge, and the connection surrounding edge is used for connecting an air outlet pipe. Thus, the air outlet pipe is convenient to connect through the connecting surrounding edge.

In some embodiments, as shown in fig. 10, the mobile air conditioner further includes a centrifugal fan including a centrifugal volute 500 and a screen assembly. The centrifugal volute 500 is provided with a volute inlet 503 and a volute outlet 504; also, an installation frame 520 is provided at the outer periphery of the scroll inlet 503; the screen assembly includes a frame 510 and a screen 530; the screen 530 is mounted within the frame 510, the frame 510 is mounted within the mounting frame 520, and the screen 530 covers the volute inlet 503.

In this embodiment, the screen assembly is integrated onto the centrifugal volute 500. In use, the screen 530 is first installed in the frame 510, and then the frame 510 is installed in the mounting frame 520 at the scroll inlet 503, with the screen 530 covering the scroll inlet 503. When the centrifugal fan is started, air sequentially enters the centrifugal volute 500 through the filter screen 530 and the volute inlet 503, and finally is blown out from the volute outlet 504, so that the effect of filtering the air is achieved.

Optionally, the centrifugal volute 500 includes a first housing 501 and a second housing 502. Wherein, the second housing 502 and the first housing 501 together define an air duct; the scroll inlet 503 is disposed on the second housing 502, and the mounting frame 520 is disposed outside the second housing 502 and located at the periphery of the scroll inlet 503.

Optionally, the first side of the mounting frame 520 is free of a rim; the frame 510 is fitted to the mounting frame 520 and is fitted into the mounting frame 520 from a first side of the mounting frame 520. The frame 510 has a gripping rim 512; after the frame 510 is installed into the mounting frame 520, the holding frame 512 serves as a frame for the first side of the mounting frame 520. A handle 513 is provided on the side of the grip rim 512 facing the outside of the mounting frame 520.

In this embodiment, the outer edge of the frame 510 is adapted to the inner edge of the mounting frame 520. At the time of installation, the user takes the frame 510 through the handle 513 and then loads the frame 510 into the installation frame 520 from the first side of the installation frame 520. And the frame 510 is fitted into the mounting frame 520 with the grip rim 512 as the rim of the first side of the mounting frame 520. Thus, the installation structure is simple and convenient for the user to operate.

Optionally, the frame edge of the frame 510 is provided with a first fold 511; after the filter screen 530 is installed in the frame 510, the first fold 511 abuts against a side of the filter screen 530 remote from the volute inlet 503. In this way, the first flange 511 provides more stability between the screen 530 and the frame 510.

Optionally, the frame edge of the mounting frame 520 is provided with a second flange 521; after the frame 510 is installed in the mounting frame 520, the second flange 521 abuts against a side of the filter screen 530 away from the scroll inlet 503. In this way, the second flange 521 stabilizes the three parts of the screen 530, the frame 510 and the mounting frame 520.

Optionally, a grille is provided within the volute inlet 503.

Alternatively, the scroll inlet 503 is configured in a circular shape and the mounting frame 520 is configured in a rectangular shape.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. A centrifugal fan, comprising:

a centrifugal volute (500) provided with a volute inlet (503) and a volute outlet (504); the outer periphery of the volute inlet (503) is provided with a mounting frame (520);

a screen (530) assembly comprising a frame (510) and a screen (530); the filter screen (530) is mounted in the frame (510), the frame (510) is mounted in the mounting frame (520), and the filter screen (530) covers the volute inlet (503);

the centrifugal volute (500) includes:

a first housing (501);

a second housing (502) that together with the first housing (501) defines an air duct; and, spiral case import (503) open is located on second casing (502), install frame (520) set up in the outside of second casing (502) and be located spiral case import (503) periphery.

2. The centrifugal fan according to claim 1, wherein,

a first side of the mounting frame (520) is free of a rim;

the frame (510) is adapted to the inner edge of the mounting frame (520) and is received in the mounting frame (520) from a first side of the mounting frame (520).

3. The centrifugal fan according to claim 2, wherein,

the frame (510) has a gripping rim (512);

after the frame (510) is installed into the mounting frame (520), the holding frame edge (512) serves as a frame edge of a first side of the mounting frame (520).

4. A centrifugal fan according to claim 3, wherein,

a handle (513) is arranged on one side of the holding frame edge (512) facing to the outside of the mounting frame (520).

5. The centrifugal fan according to any one of claims 1 to 4, wherein,

the frame edge of the frame (510) is provided with a first folded edge (511);

after the filter screen (530) is installed in the frame (510), the first folded edge (511) abuts against one side, away from the volute inlet (503), of the filter screen (530).

6. The centrifugal fan according to any one of claims 1 to 4, wherein,

the frame edge of the mounting frame (520) is provided with a second folded edge (521);

after the frame (510) is installed in the installation frame (520), the second flange (521) abuts against one side, away from the volute inlet (503), of the filter screen (530).

7. The centrifugal fan according to any one of claims 1 to 4, wherein,

a grid is arranged in the volute inlet (503).

8. The centrifugal fan according to any one of claims 1 to 4, wherein,

the volute inlet (503) is configured in a circular shape, and the mounting frame (520) is configured in a rectangular shape.

9. An air conditioner comprising the centrifugal fan according to any one of claims 1 to 8.