WO2019047805A1

WO2019047805A1 - Upright air conditioner indoor unit

Info

Publication number: WO2019047805A1
Application number: PCT/CN2018/103838
Authority: WO
Inventors: 李进超; 李国行; 任豪; 侯延慧; 郝本华; 耿宝寒
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2017-09-06
Filing date: 2018-09-03
Publication date: 2019-03-14
Also published as: CN107559962B; CN107559962A

Abstract

An upright air conditioner indoor unit, comprising: a housing (10), which is provided at the front side with multiple air outlets (111) and provided at the rear side with an air inlet (121); a heat exchanger (20) provided within the housing (10); at least two crossflow fans (30) that are sequentially arranged in the vertical direction within the housing (10) and are axially collinear; and an auxiliary heater (40) extendedly provided in the vertical direction adjacent to the at least two crossflow fans (30) for auxiliary heating of air driven by the at least two crossflow fans (30) when the upright air conditioner indoor unit is running a heating operation. Every adjacent two crossflow fans (30) are provided therebetween with a bearing base component (50) used for accommodating a fan bearing. The bearing base component (50) is provided with an additional air duct (53) at least on the side opposite the auxiliary heater (40). An additional fan (54) is provided within the additional air duct (53). The additional fan (54) is configured for promoting air to flow into the additional air duct (53), to absorb the heat generated at an area of the auxiliary heater (40) opposite the bearing base component (50), then to flow out of the additional air duct (53) to be blown to the air outlets (111), thus increasing the temperature of the air blown from the air outlets (111) and reducing heat loss.

Description

Vertical air conditioner indoor unit

Technical field

The present invention relates to an air conditioner, and more particularly to a vertical air conditioner indoor unit.

Background technique

The heat exchanger modules of some existing vertical air conditioner indoor units are provided with an electric auxiliary heat structure for enhancing the heating capacity of the indoor unit, thereby rapidly adjusting the indoor temperature. The electric auxiliary heat structure is usually disposed on the front side of the heat exchanger. Due to the limitation of the internal space of the indoor unit, the electric auxiliary heat structure is usually adjacent to the cross flow fan of the indoor unit.

However, for other existing vertical air-conditioner indoor units with two cross-flow fans, the bearing housing and the air duct divider are provided between the two cross-flow fans, so it is not very It is suitable to use the above electric auxiliary heat structure. Perhaps for this reason, the vertical air conditioner indoor unit with two cross-flow fans arranged in the upper and lower rows in the prior art has not applied the electric auxiliary heat structure, and therefore does not have a high heating capacity for quickly adjusting the indoor temperature. ability.

Summary of the invention

An object of the present invention is to break through the limitations of the prior art and to provide a vertical air conditioner indoor unit having a large air supply range and capable of quickly adjusting the indoor temperature.

It is a further object of the present invention to utilize the heat generated by the area of the auxiliary heater corresponding to each of the housing assemblies.

Another further object of the present invention is to effectively avoid the high temperature generated by the auxiliary heater from posing a safety hazard to the housing assembly between each two cross-flow fans.

In order to achieve the above object, the present invention provides a vertical air conditioner indoor unit, comprising:

The casing has a plurality of air outlets arranged vertically in a front side thereof, and an air inlet is arranged on the rear side thereof;

a heat exchanger disposed in the casing and configured to exchange heat with air flowing therethrough;

At least two cross-flow fans arranged in the vertical direction in the casing, and the axes of the at least two cross-flow fans are collinear, and each of the cross-flow fans is configured to urge air through the air inlet After entering the casing and exchanging heat with the heat exchanger, blowing out from the corresponding outlet; and

An auxiliary heater disposed vertically adjacent to an adjacent side of the at least two cross flow fans to assist in heating the air driven by the at least two cross flow fans during thermal operation of the vertical air conditioning indoor mechanism ;among them

A bearing block assembly for housing a fan bearing is disposed between each adjacent two of the cross flow fans, and at least a side of the bearing block assembly opposite to the auxiliary heater is provided with an additional air duct. An additional fan is disposed in the additional air duct, and the additional fan is configured to cause air to flow into the additional air duct and absorb at least a portion of the heat generated by the auxiliary heater and the corresponding portion of the bearing housing assembly. Said additional air duct.

Optionally, two ends of the additional air duct are respectively provided with an air inlet and an air outlet, and the air outlet is in an air inlet region or an air outlet region of the at least two cross flow fans.

Optionally, each of the bearing block assemblies includes a bearing housing for receiving a fan bearing and a circumferential outer side disposed on the bearing housing and configured to separate spaces of two cross-flow fans located above and below thereof Air duct divider; and

The additional duct is formed between the bearing housing and a sidewall of the duct divider.

Optionally, the sidewall of the air duct partition includes a first sidewall opposite to the auxiliary heater and a second sidewall adjacent to the first sidewall;

The air outlet is opened on the second side wall, and the additional fan is disposed inside the air outlet.

Optionally, a first protection member for protecting the bearing housing assembly is further disposed between the bearing housing assembly and the auxiliary heater.

Optionally, the first protective member is made of a non-combustible material.

Optionally, a section of the auxiliary heater corresponding to each of the bearing block assemblies is bound with a second protection member, and the second protection member is made of the same material as the first protection member.

Optionally, the first protection member includes at least one first protection plate disposed in an overlapping manner, and each of the first protection plates is an L-shaped plate, and the L-shaped plate is attached to the bearing block assembly. An outer surface of the first side wall opposite the auxiliary heater and an outer surface of the second side wall adjacent the first side wall.

Optionally, the bearing housing is integrally formed with the air duct partition.

Optionally, the at least two cross flow fans are on a front side of the heat exchanger, and the auxiliary heater is located between the heat exchanger and the at least two cross flow fans to The air after heat exchange of the heat exchanger is auxiliary heated.

In order to break through the limitations of the prior art, the inventor of the present application provides an auxiliary heater on the adjacent side of at least two cross-flow fans arranged above and below, thereby assisting the auxiliary fan to assist the flow of the cross-flow fan-driven airflow, thereby improving the The heating capacity of the entire vertical air conditioner indoor unit can quickly adjust the indoor temperature. At the same time, since at least two cross-flow fans are arranged up and down, the air supply range of the vertical air conditioner indoor unit in the up and down direction is enlarged, which is advantageous for the indoor temperature balance and improves the user's comfort experience.

Further, the present invention is specially designed with an additional air duct on the side of the bearing housing assembly opposite to the auxiliary heater, and an additional air duct is provided in the additional air duct to drive the air into the additional air duct through the additional fan to add air in the air duct. The absorption auxiliary heater forms at least a portion of the heat generated by the corresponding area of the bearing housing assembly to form a hot air with a higher temperature, and the hot air flows out of the additional air passage under the driving of the additional fan, thereby transferring heat to avoid affecting the bearing housing assembly. .

Further, the present invention is specially designed by the air outlet of the additional air duct, so that the hot air flowing out can be sent to the air outlet under the driving action of the cross-flow fan, thereby increasing the temperature of the airflow sent out by the air outlet, thereby improving the user. The use experience effectively utilizes the heat generated by the auxiliary heater corresponding to the area of each housing assembly, reducing the heat loss of the auxiliary heater.

Further, the inventors of the present application realized that the inner space of the vertical air conditioner indoor unit is limited, and the distance between the bearing block assembly between the adjacent two cross flow fans and the auxiliary heater is relatively close, which is affected by the auxiliary heater. Larger. Therefore, the present invention provides a first protection member for protecting the bearing housing assembly between the bearing housing assembly and the auxiliary heater, which can reduce the damage of the high temperature generated by the auxiliary heater to the bearing housing assembly and reduce the fire hazard. Further, the present invention further designs the material of the first protection member into a non-combustible material, which can completely eliminate the fire hazard and effectively protect the bearing housing assembly.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention will be described in detail, by way of example, and not limitation, The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic structural view of a vertical air conditioner indoor unit according to an embodiment of the present invention;

2 is a schematic structural exploded view of a vertical air conditioner indoor unit according to an embodiment of the present invention;

3 is a schematic partial structural view of a vertical air conditioner indoor unit according to an embodiment of the present invention;

Figure 4 is a schematic partial structural exploded view of a vertical air conditioner indoor unit according to an embodiment of the present invention;

Figure 5 is a schematic structural view of a bearing housing assembly in accordance with one embodiment of the present invention;

Figure 6 is a schematic, isometric view of another embodiment of a bearing block assembly in accordance with one embodiment of the present invention.

Detailed ways

Embodiments of the present invention provide a vertical air conditioner indoor unit, FIG. 1 is a schematic structural view of a vertical air conditioner indoor unit according to an embodiment of the present invention, and FIG. 2 is a vertical air conditioner indoor unit according to an embodiment of the present invention. Schematic structural exploded view. Referring to FIGS. 1 and 2, the vertical air conditioner indoor unit 1 of the embodiment of the present invention may generally include a cabinet 10, a heat exchanger 20, and at least two cross flow fans 30. The front side of the casing 10 is provided with a plurality of air outlets 111 arranged vertically, and the air inlet 121 is provided on the rear side. Specifically, the casing 10 defines an accommodation space inside to accommodate the cross flow fan and the heat exchanger 20. The casing 10 may include a front panel 110 on the front side and a front grille 120 on the rear side. The plurality of air outlets 111 are formed on the front panel 110, and the air inlet 121 is opened on the entrance grille 120. The rear side of the front panel 110 may further be provided with an air outlet frame assembly 90 on which a swinging blade for guiding and adjusting the direction of the air outlet of the air outlet 111 is provided. The heat exchanger 20 is disposed in the casing 10 for heat exchange with the air flowing therethrough, and forms a vapor compression refrigeration cycle system together with the compressor, the condenser, the throttling device, the connecting pipe and other accessories. The cooling/heating of air conditioners, the specific principle and structure will not be described here.

The at least two cross flow fans 30 are sequentially arranged in the vertical direction in the casing 10, and the axes of the at least two cross flow fans 30 are collinear. That is, at least two cross-flow fans 30 are arranged in the upper and lower rows in the casing 10, and the axes of each cross-flow fan 30 extend vertically, and the axes of all the cross-flow fans 30 are arranged in a line. Each of the cross-flow fans 30 corresponds to one or a part of the air outlets 111, and is configured to cause air to enter the casing 10 through the air inlet 121 and exchange heat with the heat exchanger 20, and then blows out from the corresponding air outlet 121 to realize indoors. The forced convection heat exchange between the air and the heat exchanger 20 enhances the heat exchange efficiency of the heat exchanger 20. At the same time, since at least two cross-flow fans 30 are arranged up and down, the air supply range of the vertical air conditioner indoor unit 1 in the up and down direction is enlarged, which is advantageous for the balance of the indoor temperature and improves the user's comfort experience.

In particular, the vertical air conditioner indoor unit 1 further includes an auxiliary heater 40 that is disposed vertically extending on the adjacent side of the at least two cross flow fans 30 (in addition, the "near" The "side" means the adjacent side, that is, the periphery, for assisting the heating of the air driven by the at least two cross-flow fans 30 during the heating operation of the vertical air-conditioning indoor unit 1. That is to say, during the heating operation of the vertical air conditioner indoor unit 1, the auxiliary heater 40 can additionally supply heat to the air entering through the air inlet 121, thereby improving the heating capacity of the entire vertical air conditioner indoor unit 1, and capable of Quickly adjust the temperature inside the room.

Specifically, the auxiliary heater 40 may be substantially an elongated heater extending vertically, the height of which may be substantially equal to the sum of the heights of the at least two cross flow fans 30 to make the supply air temperature more uniform. The auxiliary heater 40 is preferably an electric heater having a relatively simple structure, which may specifically be a fin heater, an electric heating tube, a ceramic heating element or the like.

3 is a schematic partial structural view of a vertical air conditioner indoor unit according to an embodiment of the present invention, and FIG. 4 is a schematic partial structural exploded view of the vertical air conditioner indoor unit according to an embodiment of the present invention. Further, a bearing housing assembly 50 for housing the fan bearing is disposed between each adjacent two cross flow fans 30.

5 is a schematic structural view of a bearing housing assembly in accordance with one embodiment of the present invention, and FIG. 6 is another schematic structural view of the bearing housing assembly in accordance with one embodiment of the present invention. An additional duct 53 is provided on a side of the chock assembly 50 opposite to the auxiliary heater 40, and an additional fan 54 is disposed in the additional duct 53. The additional fan 54 is configured to cause air to flow into the additional duct 53 and absorb auxiliary heating. At least a portion of the heat generated by the region 40 corresponding to the bearing block assembly 50 flows out of the additional air passage 53. That is, the present invention can drive the air to flow into the additional duct 53 by the additional fan 54, and the air absorbing auxiliary heater 40 in the additional duct 53 forms at least a portion of the heat generated by the corresponding region of the chock assembly 50 at a relatively high temperature. The hot air, the hot air flows out of the additional duct 53 under the drive of the additional fan 54, thereby transferring heat to avoid affecting the housing assembly 50.

In the embodiment shown in Figures 1 to 2, the number of cross flow fans 30 is two. Accordingly, the number of housing assemblies 50 is one. Specifically, the rated air volume of the upper cross-flow fan 30 is greater than the rated air volume of the cross-flow fan 30 below, and the total flow area of the corresponding all-out air outlets of the upper cross-flow fan 30 is larger than the cross-flow fan of the lower cross-flow fan The total overflow area of all the air outlets corresponding to 30. Specifically, the number of the air outlets 111 may be three, and the shape of the three air outlets 111 is the same. The cross-flow fan 30 at the upper portion may correspond to the two air outlets 111, and the cross-flow fan 30 at the bottom may correspond to one Tuyere 111. Therefore, the air supply mode of the three air flow modes can be switched only by controlling the opening and closing of the two cross flow fans 30. The air flow is from small to sequential: only the mode of the cross flow fan 30 under the bottom is turned on, and only the opening is in The mode of the cross flow fan 30 above and the mode in which the two cross flow fans 30 are simultaneously turned on. Moreover, in the three air volume air supply modes, by changing the wind speed of the cross flow fan, a more diverse air supply mode can be obtained to meet the different needs of the user and improve the user experience.

In some embodiments of the present invention, the two ends of the additional air duct 53 are respectively provided with an air inlet 531 and an air outlet 532, and the air outlet 532 is located in the air inlet region or the air outlet region of the at least two cross flow fans 30, so that The hot air sent from the additional duct 53 can be sent to the air outlet 111 by the driving of the cross flow fan 30. By specially designing the position of the air outlet 532, the hot air sent from the additional duct 53 can be sent to the air outlet 111 under the driving action of the cross flow fan 30, so that the temperature of the air stream sent from the air outlet 111 rises. The user's experience is improved, and the heat generated by the area of the auxiliary heater 40 corresponding to each of the bearing housing assemblies 50 is effectively utilized, and the heat loss of the auxiliary heater 40 is reduced.

In some embodiments of the invention, each chock assembly 50 includes a bearing block 51 for receiving a fan bearing, and bearings of two cross flow fans 30 disposed adjacently above and below the chock assembly 50 Installed in the bearing housing 51. The bearing housing 51 can be generally a hollow cylinder.

Further, each of the bearing block assemblies 50 further includes a duct spacer 52 disposed on a circumferential outer side of the bearing housing 51 and for separating the spaces of the two cross-flow fans 30 located above and below thereof to avoid two passes. The air blowing of the flow fan 30 interferes with each other. An additional duct 53 is formed between the bearing housing 51 and the side wall of the duct partition 52. The shape of the duct divider 52 may be irregularly shaped as long as it matches the duct assembly 70.

Specifically, the air duct assembly 70 includes two

end plate portions

730, 740, a volute 710, and a volute tongue 720 that are vertically spaced apart. The drive motors of the two cross flow fans are mounted to the end plate portion 730 and the end plate portion 740, respectively. The volute 710 is erected and connected between the two

end plate portions

730, 740, and the volute tongue 720 is also erected and connected between the two

end plate portions

730, 740, and cooperates with the volute 710 to guide the air flow direction. The duct divider 52 is coupled between the volute 710 and the volute tongue 720. Two bearings that are respectively matched with the rotating shafts of the two cross-flow fans 30 are mounted in the bearing housing 51 to facilitate installation of two cross-flow fans.

In some embodiments of the invention, the sidewall of the duct divider 52 includes a first sidewall 521 opposite the auxiliary heater 40 and a second sidewall 522 adjacent the first sidewall 521. The air outlet 532 is opened on the second side wall 522, and the additional fan 54 is disposed inside the air outlet 532. Specifically, the additional duct 53 may include a first sub-duct formed between the bearing housing 51 and the first side wall 521 of the duct partition 52 and a second side wall 522 formed in the bearing housing 51 and the duct partition 52. Between the second sub-ducts, the air inlet 531 is located at an end of the first sub-duct which is away from the second sub-duct, and the air outlet 532 is located at the second sub-duct. The additional fan 54 can be disposed opposite the air outlet 532.

The first side wall 521 and the second side wall 522 form a protection member capable of protecting the bearing housing 51 to prevent the high temperature generated by the auxiliary heater 40 from harming the bearing housing 51 and reducing the fire hazard. Preferably, the first side wall 521 and the second side wall 522 are made of a non-combustible material, and the non-combustible material of the invention can completely eliminate the fire hazard compared with the flame-retardant material, and the bearing housing 51 is comprehensively Effectively protected.

Further, the bearing housing 51 can be integrally formed with the duct spacer 52. Alternatively, the bearing block 51 can be fixedly coupled to the duct divider 52 by snapping, welding or other suitable means.

The inventors of the present application realized that the inner space of the vertical air conditioner indoor unit 1 is such that the bearing housing assembly 50 between the adjacent two cross flow fans 30 is closer to the auxiliary heater 40, and is assisted by the auxiliary heater 40. The impact is greater. To this end, the present invention is further provided with a first protection member 60 for protecting the bearing housing assembly 50 between the bearing housing assembly 50 and the auxiliary heater 40, which can reduce the high temperature generated by the auxiliary heater 40 and the damage to the bearing housing assembly 50. Reduces fire hazards. Preferably, the first protection member 60 is made of a non-combustible material, and the present invention uses a non-combustible material to completely eliminate the fire hazard, and the bearing housing assembly 50 is fully and effectively protected. The non-combustible material of the first protective member 60 may be, for example, a steel material.

In some embodiments of the present invention, the portion of the auxiliary heater 40 corresponding to the bearing block assembly 50 is bound to the second protection member 41, and the second protection member 41 is made of the same material as the first protection member 60 to further Effectively protect the housing assembly. That is, the second protection member 41 is also made of a non-combustible material. The second protection member 41 may be a square annular member wound around a section of the auxiliary heater 40 corresponding to the bearing housing assembly 50.

In some embodiments of the present invention, the first protection member 60 includes at least one first protection plate disposed in an overlapping manner, and each of the first protection plates is an L-shaped plate attached to the bearing block assembly 50. An outer surface of the first side wall opposite the auxiliary heater 40 and an outer surface of the second side wall adjacent to the first side wall. Specifically, the first side wall and the second side wall are a first side wall 521 and a second side wall 522 of the air duct partition 52, respectively. The number of the first protective plates may be one layer or multiple layers of two or more layers. The first protective panel 60 can be secured to the sidewall of the chock assembly 50 by gluing, snapping, or other suitable means.

In some alternative embodiments of the invention, the first protective sheet may also be a flat sheet that is disposed only on the side of the chock assembly 50 opposite the auxiliary heater 40.

In some embodiments of the invention, the at least two cross flow fans 30 are on the front side of the heat exchanger 20, and the auxiliary heater 40 is located between the heat exchanger 20 and the at least two cross flow fans 30 to The air after heat exchange of the heat exchanger 20 is assistedly heated, and the heating effect is better. Specifically, the heat exchanger 20 is preferably a "U" type heat exchanger that extends vertically and has an opening facing forward, the cross flow fan 30 is located on the front inner side of the heat exchanger 20, or two cross flow fans are "U" type The heat exchanger is surrounded by three sides, so that the three-side suction passes through the heat exchanger 20 during the operation of the cross-flow fan, thereby increasing the air circulation of the heat exchanger 20, thereby improving the heat exchange efficiency.

In some alternative embodiments, heat exchanger 20 can also be a flat heat exchanger.

Those skilled in the art should understand that "upper", "lower", "inner", "outer", "horizontal", "front", "rear" and the like in the embodiments of the present invention are used to indicate azimuth or positional relationship. The terminology is based on the actual use state of the vertical air conditioner indoor unit 1. These terms are only for convenience of description and understanding of the technical solutions of the present invention, and do not indicate or imply that the device or component referred to has a specific The orientation is therefore not to be construed as limiting the invention.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

A vertical air conditioner indoor unit includes:

The casing has a plurality of air outlets arranged vertically in a front side thereof, and an air inlet is arranged on the rear side thereof;

a heat exchanger disposed in the casing and configured to exchange heat with air flowing therethrough;

At least two cross-flow fans arranged in the vertical direction in the casing, and the axes of the at least two cross-flow fans are collinear, and each of the cross-flow fans is configured to urge air through the air inlet After entering the casing and exchanging heat with the heat exchanger, blowing out from the corresponding outlet; and

An auxiliary heater disposed vertically adjacent to an adjacent side of the at least two cross flow fans to assist in heating the air driven by the at least two cross flow fans during thermal operation of the vertical air conditioning indoor mechanism ;among them

A bearing block assembly for housing a fan bearing is disposed between each adjacent two of the cross flow fans, and at least a side of the bearing block assembly opposite to the auxiliary heater is provided with an additional air duct. An additional fan is disposed in the additional air duct, and the additional fan is configured to cause air to flow into the additional air duct and absorb at least a portion of the heat generated by the auxiliary heater and the corresponding portion of the bearing housing assembly. Said additional air duct.
The vertical air conditioner indoor unit according to claim 1, wherein

The two ends of the additional air duct are respectively provided with an air inlet and an air outlet, and the air outlet is in an air inlet region or an air outlet region of the at least two cross flow fans.
The vertical air conditioner indoor unit according to claim 2, wherein

Each of the bearing block assemblies includes a bearing housing for housing a fan bearing and a duct separation disposed on a circumferential outer side of the bearing housing for separating spaces of two cross-flow fans located above and below the housing Piece; and

The additional duct is formed between the bearing housing and a sidewall of the duct divider.
The vertical air conditioner indoor unit according to claim 3, wherein

a sidewall of the duct spacer includes a first sidewall opposite the auxiliary heater and a second sidewall adjacent to the first sidewall;

The air outlet is opened on the second side wall, and the additional fan is disposed inside the air outlet.
The vertical air conditioner indoor unit according to claim 1, wherein

A first protection member for protecting the bearing housing assembly is further disposed between the bearing housing assembly and the auxiliary heater.
The vertical air conditioner indoor unit according to claim 5, wherein

The first protection member is made of a non-combustible material.
A vertical air conditioner indoor unit according to claim 6, wherein

A section of the auxiliary heater corresponding to each of the bearing block assemblies is bound with a second protection member, and the second protection member is made of the same material as the first protection member.
The vertical air conditioner indoor unit according to claim 5, wherein

The first protection member includes at least one first protection plate disposed in an overlapping manner, and each of the first protection plates is an L-shaped plate, and the L-shaped plate is attached to the bearing block assembly and the auxiliary An outer surface of the opposite first side wall of the heater and an outer surface of the second side wall adjacent the first side wall.
The vertical air conditioner indoor unit according to claim 3, wherein

The bearing housing is integrally formed with the air duct partition.
The vertical air conditioner indoor unit according to claim 1, wherein

The at least two cross flow fans are on a front side of the heat exchanger, and the auxiliary heater is located between the heat exchanger and the at least two cross flow fans to exchange the heat exchanger The heated air is subjected to auxiliary heating.