WO2020156248A1

WO2020156248A1 - Cabinet air-conditioner indoor unit

Info

Publication number: WO2020156248A1
Application number: PCT/CN2020/072799
Authority: WO
Inventors: 孙婷; 郝本华; 张德明; 王佳林; 成汝振; 刘庆赟
Original assignee: 青岛海尔空调器有限总公司; 海尔智家股份有限公司
Priority date: 2019-01-31
Filing date: 2020-01-17
Publication date: 2020-08-06
Also published as: CN109812873A; CN109812873B

Abstract

Disclosed is a cabinet air-conditioner indoor unit (100). The cabinet air-conditioner indoor unit (100) comprises a casing (110) provided with a casing air inlet, an upper-part air outlet and a lower-part air outlet (116), an air supply assembly arranged inside the casing (110), and an indoor heat exchanger (150), wherein the air supply assembly is configured to draw in ambient air from an ambient environment of the casing air inlet and enable the air to respectively flow to the upper-part air outlet and the lower-part air outlet (116); the air supply assembly comprises two centrifugal fans (121, 122) arranged at intervals in a vertical direction, and an air duct main body (130); each of the centrifugal fans (121, 122) comprises a volute and an impeller; the air duct main body (130) comprises two air duct parts (131, 132) isolated from each other and extending in opposite directions, and the two centrifugal fans (121, 122) are respectively arranged inside the two air duct parts (131, 132); and each of the air duct parts (131, 132) is provided with at least one air flow inlet and an air flow outlet, and the centrifugal fans (121, 122) are configured to draw in the air from the air flow inlet and enable the air to flow to the air flow outlet. The air supply assembly is not only produced and manufactured simply and easily, high in production efficiency, and low in cost, but can also further avoid error superposition caused by connection of a plurality of components.

Description

Cabinet type air conditioner indoor unit

Technical field

The invention relates to the field of air conditioning, in particular to a cabinet type air conditioner indoor unit.

Background technique

The existing cabinet-type air conditioner indoor unit usually fixes the centrifugal fan directly on the body frame, and forms an air duct cavity with the casing, or directs the airflow to the air outlet by communicating with the guide air duct. The first solution is simple to install, but it can only achieve one-way air supply, and because the cold air flow directly acts on the casing, it is easy to cause condensation on the outer wall of the casing. The second solution can realize air supply in multiple directions by adding centrifugal fans and diversion air ducts, but the production and assembly are complicated, and the splicing of multiple components will cause errors to be superimposed and difficult to repair.

Considering comprehensive considerations, it is necessary to provide a simple assembly and high-precision air supply assembly and a cabinet air conditioner indoor unit with the air supply assembly.

Summary of the invention

An object of the present invention is to provide a cabinet air conditioner indoor unit that is easy to produce and low in cost.

A further object of the present invention is to improve the stability of the air supply assembly.

Another further object of the present invention is to facilitate the installation and disassembly of the centrifugal fan.

In particular, the present invention provides a cabinet type air conditioner indoor unit, including:

The casing forms the air inlet of the organic casing, the upper air outlet and the lower air outlet;

The air supply assembly is arranged in the casing and is configured to suck in ambient air from the surrounding environment of the air inlet of the casing and promote the air to flow to the upper air outlet and the lower air outlet respectively; and

The indoor heat exchanger is arranged on the air inlet flow path between the air inlet of the casing and the air supply assembly; wherein, the air supply assembly includes:

Two centrifugal fans are arranged at intervals in the vertical direction, each of the centrifugal fans includes a volute and an impeller arranged in the volute; and

The air duct main body includes two air duct parts isolated from each other and extending in opposite directions, and the two centrifugal fans are respectively arranged in the two air duct parts; wherein

The air duct portion is formed with at least one airflow inlet and one airflow outlet, and the centrifugal fan is configured to suck in air from the airflow inlet and promote the air to flow to the airflow outlet.

Optionally, the air duct part includes:

The accommodating section, the inner wall of which is configured to match the outer wall of the volute to accommodate and support the centrifugal fan; and

The diversion section is in communication with the accommodating section, and its inner wall is arranged in a smooth transitional connection with the volute air duct of the centrifugal fan; wherein

The two centrifugal fans are arranged laterally, the number of the volute air inlet and the air inlet of each centrifugal fan is two, and the volute air inlet is exposed at the air inlet; and

The airflow outlet is the air outlet of the diversion section.

Optionally, each of the air ducts is formed with a disassembly opening for disassembling and disassembling the centrifugal fan; and

The dismounting opening is formed at a position where the accommodating section is close to the outlet section of the volute, so as to facilitate dismounting and dismounting of the centrifugal fan, and at the same time make the air duct portion have sufficient strength.

Optionally, the accommodating section is provided with at least one bayonet, and the bayonet is arranged to penetrate the accommodating section along the disassembly and assembly direction of the centrifugal fan; and

The volute is correspondingly formed with at least one buckle, and the at least one buckle is configured to be respectively buckled with the at least one bayonet, so as to facilitate the installation and positioning of the centrifugal fan.

Optionally, a plurality of step grooves are formed at the lateral periphery of the disassembly opening; and

The volute is correspondingly formed with a plurality of connecting protrusions, and the plurality of connecting protrusions are respectively arranged to be firmly connected to the bottom walls of the plurality of step grooves; wherein

The plurality of step grooves are mirror-symmetrical about the central plane of the centrifugal fan.

Optionally, the air duct main body further includes:

The connecting part is arranged between the two air duct parts and connects the two air duct parts; and

The lateral size of the connecting portion is set to gradually decrease from near to far with respect to the disassembly opening.

Optionally, the air supply assembly further includes:

Two sheet metal parts extending in the vertical direction and connecting the two air duct parts; and

The two sheet metal parts are arranged on both lateral sides of the two air duct parts and are arranged away from the disassembly opening.

Optionally, the air duct main body is composed of two air duct half-shells that are spliced together in a vertical plane extending in a forward and backward direction.

Optionally, the air supply assembly further includes:

Two gaskets, each of which is arranged between one centrifugal fan and the corresponding air duct part of the centrifugal fan, to prevent condensation and reduce vibration.

Optionally, the cabinet-type air conditioner indoor unit further includes:

Two air guiding members are respectively arranged to communicate with the guiding section of one of the air duct parts, and together with the guiding section form a guiding air channel for guiding the airflow blown by the corresponding centrifugal fan to the indoor environment; wherein

The outlet sections of the two centrifugal fans are both located on the front side of the volute tongue section, and the guide air duct is arranged to protrude backward as a whole.

The cabinet-type air conditioner indoor unit of the present invention accommodates and supports two centrifugal fans through an integrated air duct structure. Compared with the technical solution of fixing the centrifugal fan and the guide air duct in the prior art, it is not only easy to manufacture, but also has high production efficiency. The cost is low, and the error stacking caused by the splicing of multiple components can also be avoided.

Further, in the present invention, an opening for disassembly and assembly is provided at the position of the main body of the air duct corresponding to the outlet section of the volute of the centrifugal fan, which not only facilitates the disassembly and assembly of the centrifugal fan, but also makes the main body of the air duct have greater structural strength, thereby making it compatible with the centrifugal fan. The air supply component formed together has high stability.

Further, the present invention firstly engages with the buckle of the centrifugal fan volute through the bayonet of the main body of the air duct penetrating the accommodating section along the disassembly direction of the centrifugal fan, and then connects the centrifugal fan with the step groove at the lateral periphery of the disassembly opening. The connecting protrusions of the fan volute are tightly connected to realize the rapid positioning and installation of the centrifugal fan, which is not only reliable and stable, but also convenient for disassembly and maintenance of the centrifugal fan.

In particular, in the present invention, the volute outlet section of the centrifugal fan is arranged on the front side of the volute tongue section, and the guide air duct of the centrifugal fan is set to protrude backward as a whole, which can make the air flow flow smoothly while making The airflow is fully mixed in the guide air duct to improve the uniformity of the airflow velocity.

Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will better understand the above and other objectives, advantages and features of the present invention.

Description of the drawings

Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary but not restrictive manner with reference to the accompanying drawings. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic cross-sectional view of a cabinet-type air conditioner indoor unit according to an embodiment of the present invention;

Figure 2 is a schematic exploded view of the air supply assembly in Figure 1;

Fig. 3 is a schematic side view of the air supply assembly in Fig. 1 viewed from back to front;

FIG. 4 is a schematic enlarged view of area A in FIG. 3;

Figure 5 is a schematic exploded view of the main body of the air duct in Figure 2;

Fig. 6 is a schematic enlarged view of area B in Fig. 5;

Fig. 7 is a schematic cross-sectional view of the air guide member in Fig. 1, wherein the air outlet frame is in an open position;

Fig. 8 is a schematic cross-sectional view of the air guide member in Fig. 1, wherein the air outlet frame is in a closed position.

detailed description

Fig. 1 is a schematic cross-sectional view of a cabinet-type air conditioner indoor unit 100 according to an embodiment of the present invention. 1, the cabinet-type air conditioner indoor unit 100 may include a cabinet 110, an air supply assembly arranged in the cabinet 110, and an indoor heat exchanger 150 arranged on an air inlet flow path of the air supply assembly.

The casing 110 may be surrounded by a base and a body arranged on the base, and the body may include a front panel, a flow guide extension plate 115, two lateral side panels, and a back panel. The rear panel forms an organic shell air inlet. The guide extension plate 115 is disposed below the front panel, and the top end of the guide extension plate 115 and the bottom end of the front panel enclose the lower air outlet 116 of the casing 110. The upper air outlet can be enclosed by the front panel, two lateral side panels and the back panel.

The air supply assembly is used to suck in ambient air from the surrounding environment of the air inlet of the cabinet and to promote the air to flow to the upper air outlet and the lower air outlet 116 respectively, and it includes a centrifugal fan 121 and a centrifugal fan 122 arranged at intervals in the vertical direction, and The air duct main body 130 for receiving and supporting the centrifugal fan 121 and the centrifugal fan 122.

Fig. 2 is a schematic exploded view of the air supply assembly in Fig. 1. Referring to FIG. 2, the air duct main body 130 may be formed with an air duct part 131 and an air duct part 132 which are isolated from each other and extend in opposite directions, and the centrifugal fan 121 and the centrifugal fan 122 may be respectively disposed in the air duct part 131 and the air duct part 132. Each air duct portion may be formed with at least one airflow inlet and one airflow outlet, and the centrifugal fan disposed therein may be configured to suck air from the airflow inlet and promote the air to flow to the airflow outlet.

Specifically, the air duct portion 131 may include an accommodation section 1311 that is shaped to match the outer wall of the volute of the centrifugal fan 121 and a diversion section 1312 extending upward from the air outlet of the centrifugal fan 121. The centrifugal fan 121 is arranged in the containing section 1311. An airflow outlet is formed at the top end of the guiding section 1312.

The air duct portion 132 may include an accommodation section 1321 that is shaped to match the outer wall of the volute of the centrifugal fan 122 and a diversion section 1322 extending downward from the air outlet of the centrifugal fan 122. The centrifugal fan 122 is disposed in the accommodating section 1321. An airflow outlet is formed at the bottom end of the guiding section 1322.

The centrifugal fan 121 and the centrifugal fan 122 can be both horizontally arranged, and two lateral side walls of each centrifugal fan are respectively formed with a fan air inlet to increase the air intake of the centrifugal fan 121 and the centrifugal fan 122. Correspondingly, two lateral side walls of the accommodating section 1311 and the accommodating section 1321 are each formed with an air inlet to expose the fan air inlets of the centrifugal fan 121 and the centrifugal fan 122.

The diversion section 1312 and the diversion section 1322 may be arranged to be smoothly transitionally connected with the volute air ducts of the centrifugal fan 121 and the centrifugal fan 122 to improve the smoothness of the air flow.

The cabinet-type air conditioner indoor unit 100 of the present invention accommodates and supports two centrifugal fans through an integrated air duct structure. Compared with the prior art technical solution of fixing the centrifugal fan and the guide air duct separately, it is not only easy to manufacture, but also has high production efficiency. , The cost is low, and the error stacking caused by the splicing of multiple components can be avoided, and the structure is stable and reliable.

In some embodiments, the accommodating section 1311 and the accommodating section 1321 may be respectively formed with a disassembly opening for disassembling and disassembling the centrifugal fan 121 and the centrifugal fan 122.

The disassembling opening may be formed at a position where the accommodating section is close to the outlet section of the volute of the corresponding centrifugal fan, so as to facilitate disassembling and disassembling the centrifugal fan, and at the same time make the air duct main body 130 have sufficient strength.

The outlet section of the volute of the centrifugal fan 121 and the centrifugal fan 122 may be respectively formed with a disassembly handle 123 to facilitate the disassembly and assembly of the centrifugal fan 121 and the centrifugal fan 122.

Those skilled in the art are well-known to those skilled in the art that the peripheral wall of the volute of a centrifugal fan is composed of a volute section that gradually expands with respect to the outer contour of the impeller, and a volute tongue section and an outlet section respectively extending from both ends of the volute section. The air outlet of the centrifugal fan is formed between the volute tongue section and the outlet section.

Fig. 3 is a schematic side view of the air blowing assembly in Fig. 1 viewed from back to front; Fig. 4 is a schematic enlarged view of area A in Fig. 3. Referring to FIGS. 3 and 4, each accommodating section is provided with at least one bayonet 136, and the bayonet 136 can be arranged to penetrate the accommodating section along the disassembly and assembly direction of the corresponding centrifugal fan. The volute of the centrifugal fan may be correspondingly formed with at least one buckle 126, and the at least one buckle 126 may be configured to be respectively clamped with the at least one bayonet 136 to facilitate the installation and positioning of the centrifugal fan.

Referring to FIG. 2, a plurality of step grooves 135 may be formed at the lateral periphery of each disassembly opening. The volute of the centrifugal fan may be correspondingly formed with a plurality of connecting protrusions 125, and the plurality of connecting protrusions 125 may be arranged to be respectively fastened and connected to the bottom wall of the plurality of step grooves 135 to improve the stability of the centrifugal fan and facilitate Centrifugal fan repair.

The plurality of step grooves 135 may be arranged to be mirror-symmetrical with respect to the central plane of the corresponding centrifugal fan, so as to further improve the stability of the centrifugal fan.

The air duct main body 130 may further include a connecting part 133 provided between the air duct part 131 and the air duct part 132 and connecting the air duct part 131 and the air duct part 132. The lateral size of the connecting portion 133 can be set to gradually decrease from near to far relative to the disassembly and assembly opening, so as to make the air supply assembly stable and reliable, and save costs.

The air blowing assembly may further include two sheet metal members 134 extending in the vertical direction and connecting the air duct part 131 and the air duct part 132. The two sheet metal parts 134 are respectively arranged on the lateral sides of the air duct portion 131 and the air duct portion 132 and are arranged away from the disassembly opening.

In some embodiments, the outer wall of the volute of the centrifugal fan may be spaced apart from the inner wall of the containing section to form an air isolation belt to prevent condensation on the outer wall of the containing section. In other embodiments, the air blowing assembly may further include two pads. Each liner is arranged between a centrifugal fan and the corresponding air duct part of the centrifugal fan to prevent condensation and reduce vibration. The liner can be attached to the outer wall of the volute of the centrifugal fan in advance.

5 is a schematic exploded view of the air duct main body 130 in FIG. 2; FIG. 6 is a schematic enlarged view of the area B in FIG. 5. Referring to FIGS. 5 and 6, in some embodiments, the air duct main body 130 may be formed by splicing the air duct half-shell 130a and the air duct half-shell 130b along a vertical plane extending in a forward and backward direction. The splicing plane is preferably the central symmetry plane of the centrifugal fan.

The air duct half-shell 130a and the air duct half-shell 130b may be respectively formed with a plurality of connecting through holes 139, and each fastener is arranged to pass through the connecting through hole 139 of one air duct half-shell 130a and one air duct half-shell in the transverse direction The connecting through holes 139 of 130b fixedly connect the air duct half-shell 130a and the air duct half-shell 130b.

The air duct half-shell 130a may be formed with a plurality of positioning posts 137. The air duct half-shell 130b may correspondingly be formed with a plurality of positioning holes 138, and the plurality of positioning posts 137 may be arranged to be respectively clamped with the plurality of positioning holes 138 to facilitate the installation and positioning of the air duct half-shell 130a and the air duct half-shell 130b. Wherein, the cross section of the positioning post 137 located in the diversion section may be a perfect circle, and the corresponding positioning hole 138 may be an oblong hole extending parallel to the diversion section.

In the illustrated embodiment, the air duct half-shell 130a corresponds to the diversion section 1312, the connecting portion 133, and the diversion section 1322. There are two positioning posts 137 in the front and the back respectively, and the upper and lower positions of each positioning post 137 At least one fastener is provided on both sides.

1, in some embodiments, the cabinet-type air conditioner indoor unit 100 may further include a wind guide member 200 and a wind guide member 140. The wind guide member 200 and the wind guide member 140 are respectively arranged above and below the air blowing assembly.

The air guiding member 200 is in communication with the guiding section 1312, and together with the guiding section 1312 forms a guiding air duct for guiding the airflow blown by the centrifugal fan 121 to the indoor environment through the upper air outlet. The air guiding member 140 may be in communication with the guiding section 1322, and together with the guiding section 1322 form a guiding air duct for guiding the air flow blown by the centrifugal fan 122 to the indoor environment through the lower air outlet 116.

In particular, the volute outlet section of the centrifugal fan 121 and the centrifugal fan 122 are both located on the front side of their volute tongue section, and the guide air ducts of the centrifugal fan 121 and the centrifugal fan 122 can be set to protrude backward as a whole to make While the airflow is flowing smoothly, the airflow is fully mixed in the guide air duct to improve the uniformity of the airflow velocity.

Fig. 7 is a schematic cross-sectional view of the air guide member in Fig. 1 with the air outlet frame in an open position; Fig. 8 is a schematic cross-sectional view of the air guide member in Fig. 1 with the air outlet frame in a closed position. 7 and 8, the air guide member 200 may include a housing 210 with an air inlet opening 2111 and an air outlet opening 2112 on the bottom wall and the top wall, respectively, fixed in the housing 210 and the air inlet and the air inlet opening 2111 butted The communicating air duct 230, the air outlet frame 220, and a driving device for driving the air outlet frame 220 to rotate between the open position and the closed position. The air inlet opening 2111 of the housing 210 may be arranged to be connected to the air outlet of the air duct 131.

The air outlet frame 220 can be configured to set the air outlet mask connected to the air duct 230 in the air duct. When the air outlet frame 220 moves to the open position, its air outlet is exposed through the air outlet opening 2112 and the upper opening of the casing 110 Above, together with the diversion section 1312 and the communicating air duct 230, a continuous diversion duct is formed to lead the air flow forward; when the air outlet frame 220 moves to the closed position, it is completely inside the housing 210 to prevent the air conditioner Lower the center of gravity of the whole machine when working.

The air outlet frame 220 can be set to rotate around a pivot axis located on the rear side of the air duct to increase the radius of rotation of the air duct of the air outlet frame around the pivot axis, thereby reducing the connection with the air outlet frame 220 when it is in the open position. The gap between the air passages 230 further reduces the overall size of the wind guide member 200.

The connecting air duct 230 may be arranged to extend from bottom to top and forward to further reduce the gap between the air outlet frame 220 and the connecting air duct 230 when the air outlet frame 220 is in the open position.

The air guide member 200 may further include a top cover fixedly connected to the air outlet frame 220, and the top cover may be configured to close the upper opening of the casing 110 when the air outlet frame 220 is in the closed position to prevent dust from falling into.

A horizontal swing blade group 223 and a vertical swing blade group 224 may be provided at the air outlet of the air outlet frame 220 for adjusting the flow direction of the airflow in the vertical direction and the horizontal direction, respectively. The horizontal swing leaf group 223 can be arranged on the front side of the vertical swing leaf group 224.

In some embodiments, the driving device may include a gear, a motor 242 drivingly connected to the gear, a mounting box 243 for fixing the motor 242, and a limiting member 222 fixedly connected to the air outlet frame 220. The limiting member 222 may be formed with an arc-shaped rack for meshing with the gear, and used to define the movement path of the wind frame 220.

So far, those skilled in the art should realize that although a number of exemplary embodiments of the present invention have been illustrated and described in detail herein, they can still be disclosed according to the present invention without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications that conform to the principles of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all these other variations or modifications.

Claims

A cabinet type air conditioner indoor unit, including:

The casing forms the air inlet of the organic casing, the upper air outlet and the lower air outlet;

The air supply assembly is arranged in the casing and is configured to suck in ambient air from the surrounding environment of the air inlet of the casing and promote the air to flow to the upper air outlet and the lower air outlet respectively; and

The indoor heat exchanger is arranged on the air inlet flow path between the air inlet of the casing and the air supply assembly; wherein, the air supply assembly includes:

Two centrifugal fans are arranged at intervals in the vertical direction, each of the centrifugal fans includes a volute and an impeller arranged in the volute; and

The air duct main body includes two air duct parts isolated from each other and extending in opposite directions, and the two centrifugal fans are respectively arranged in the two air duct parts; wherein

The air duct portion is formed with at least one airflow inlet and one airflow outlet, and the centrifugal fan is configured to suck in air from the airflow inlet and promote the air to flow to the airflow outlet.
The cabinet type air conditioner indoor unit according to claim 1, wherein the air duct part comprises:

The accommodating section, the inner wall of which is configured to match the outer wall of the volute to accommodate and support the centrifugal fan; and

The diversion section is in communication with the accommodating section, and its inner wall is arranged in a smooth transitional connection with the volute air duct of the centrifugal fan; wherein

The two centrifugal fans are arranged laterally, the number of the volute air inlet and the air inlet of each centrifugal fan is two, and the volute air inlet is exposed at the air inlet; and

The airflow outlet is the air outlet of the diversion section.
The cabinet type air conditioner indoor unit according to claim 2, wherein:

Each of the air ducts is formed with a disassembly opening for disassembling and disassembling the centrifugal fan; and

The dismounting opening is formed at a position where the accommodating section is close to the outlet section of the volute, so as to facilitate dismounting and dismounting of the centrifugal fan, and at the same time make the air duct portion have sufficient strength.
The cabinet type air conditioner indoor unit according to claim 3, wherein:

The accommodating section is provided with at least one bayonet, and the bayonet is arranged to penetrate the accommodating section along the disassembly and assembly direction of the centrifugal fan; and

The volute is correspondingly formed with at least one buckle, and the at least one buckle is configured to be respectively buckled with the at least one bayonet, so as to facilitate the installation and positioning of the centrifugal fan.
The cabinet type air conditioner indoor unit according to claim 3, wherein:

A plurality of step grooves are formed at the lateral periphery of the disassembly opening; and

The volute is correspondingly formed with a plurality of connecting protrusions, and the plurality of connecting protrusions are respectively arranged to be firmly connected to the bottom walls of the plurality of step grooves; wherein

The plurality of step grooves are mirror-symmetrical about the central plane of the centrifugal fan.
The cabinet type air conditioner indoor unit according to claim 3, wherein the air duct main body further comprises:

The connecting part is arranged between the two air duct parts and connects the two air duct parts; and

The lateral size of the connecting portion is set to gradually decrease from near to far with respect to the disassembly opening.
The cabinet type air conditioner indoor unit according to claim 6, wherein the air supply component further comprises:

Two sheet metal parts extending in the vertical direction and connecting the two air duct parts; and

The two sheet metal parts are arranged on both lateral sides of the two air duct parts and are arranged away from the disassembly opening.
The cabinet type air conditioner indoor unit according to any one of claims 2-6, wherein:

The main body of the air duct is composed of two air duct half-shells spliced along a vertical plane extending in a forward and backward direction.
The cabinet type air conditioner indoor unit according to claim 2, wherein the air supply component further comprises:

Two gaskets, each of which is arranged between one centrifugal fan and the corresponding air duct part of the centrifugal fan, to prevent condensation and reduce vibration.
The cabinet type air conditioner indoor unit according to claim 2, further comprising:

Two air guiding members are respectively arranged to communicate with the guiding section of one of the air duct parts, and together with the guiding section form a guiding air channel for guiding the airflow blown by the corresponding centrifugal fan to the indoor environment; wherein

The outlet sections of the two centrifugal fans are both located on the front side of the volute tongue section, and the guide air duct is arranged to protrude backward as a whole.