Wall-mounted air conditioner indoor unit

Abstract

The present invention provides a wall-mounted air conditioner indoor unit, which comprises a casing, an air supply assembly and at least one indoor heat exchanger, wherein a top air inlet is provided on a top wall of the casing, side air inlets are respectively provided on two lateral side walls, and a front air outlet is provided on a front wall, the air supply assembly comprises an air supply portion and an air guide portion, an air supply fan is arranged in the air supply portion, the air supply fan is arranged to inhale ambient air from the surrounding environment of the two side air inlets and the surrounding environment of the top air inlet and to cause the air to flow to the air guide portion, the air guide portion is arranged to guide the airflow blown out by the air supply fan to the front air outlet, and the front air outlet is arranged in a lower area of ​​the front wall of the casing, and the front wall of the casing is inclined forward from bottom to top, so that the inclined front wall of the indoor unit is used to block the hot air flow blown out by the front air outlet from flowing back upward, so that the hot air flow blown out by the front air outlet is fully heat-exchanged with the indoor ambient air and then is inhaled into the indoor unit for heat exchange with the indoor heat exchanger, thereby improving the heating effect.

Description

Technical Field

[0001] The invention relates to the technical field of air treatment, in particular to an indoor unit of a wall-mounted air conditioner. Background Art

[0002] The air conditioner is one of the essential household appliances. The wall-mounted air conditioner indoor unit is a common form of indoor unit. It is widely used because of its small space occupation.

[0003] The existing wall-mounted air conditioner indoor unit mainly uses a single air outlet of a cross-flow fan to supply air, and there is no air flow interference structure for the inlet and outlet. When heating, the upper airflow blown out of the air outlet is easily affected by the negative pressure of the upper air inlet and directly flows back to the indoor unit without heat exchange with the indoor ambient air, affecting the heating effect. Summary of the invention

[0004] One object of the present invention is to prevent the hot air blown out of the air outlet from flowing back when the indoor unit of the wall-mounted air conditioner is heating, thereby improving the heating effect.

[0005] A further object of the present invention is to ensure stable operation of a double-suction centrifugal fan of an indoor unit of a wall-mounted air conditioner.

[0006] A further object of the present invention is to increase the air supply volume of the indoor unit of the wall-mounted air conditioner and to increase the air supply distance.

[0007] In particular, the present invention provides a wall-mounted air conditioner indoor unit, comprising:

[0008] A casing, wherein a heat exchange air supply cavity is defined therein, the casing is provided with a top air inlet, two side air inlets and a front air outlet, the top air inlet is provided on the top wall of the casing, the two side air inlets are provided on two lateral side walls of the casing respectively, the front air outlet is provided on the lower area of ​​the front wall of the casing, and the front wall of the casing is arranged to be inclined forward from bottom to top;

[0009] An air supply assembly is arranged in the heat exchange air supply cavity, comprising an air supply portion and an air guide portion, wherein an air supply fan is arranged in the air supply portion, wherein the air supply fan is configured to inhale ambient air from the surrounding environment of the two side air inlets and the surrounding environment of the top air inlet and cause the air to flow toward the air guide portion, and wherein the air guide portion is configured to guide the airflow blown out by the air supply fan toward the front air outlet;

[0010] At least one indoor heat exchanger is arranged in the heat exchange air supply cavity and is located on the air inlet flow path between the top air inlet, the two side air inlets and the air supply part.

[0011] Optionally, the air supply portion and the air guide portion are distributed along the height direction of the housing;

[0012] The air supply fan is a double-suction centrifugal fan, the rotating shaft of the double-suction centrifugal fan is arranged in a direction parallel to the width direction of the casing, so that the double-suction centrifugal fan is arranged in the transverse direction, and the transverse ends of the double-suction centrifugal fan are respectively provided with a fan air inlet;

[0013] The at least one indoor heat exchanger comprises two indoor heat exchangers, and the two indoor heat exchangers correspond one-to-one to the two fan air inlets, and are respectively arranged on the air inlet flow path between the corresponding fan air inlet and the side air inlet located on the same side as the fan air inlet, and are respectively arranged to exchange heat with the air entering through the corresponding side air inlet and with the air entering through the top air inlet.

[0014] Optionally, the air supply portion further includes a fan volute, which is arranged on the outer periphery of the double-suction centrifugal fan and is connected to the air guide portion;

[0015] The air guide portion comprises:

[0016] An air guide housing, which defines an air guide cavity in communication with the fan volute, and a front avoidance opening in communication with the air guide cavity is provided in an area of ​​the front side of the air guide housing opposite to the front air outlet;

[0017] An air guide component is arranged in the air guide cavity, and its front end passes through the front avoidance port to connect with the front air outlet. The air guide component has a through air duct extending front and back and penetrating front and back, and at least one annular jet port extending around the front and back directions. The annular jet port is configured to guide the heat exchange airflow blown out by the double-suction centrifugal fan to the through air duct and blow the airflow forward to drive the airflow in the through air duct forward to the front air outlet.

[0018] Optionally, a rear avoidance opening is provided in an area of ​​the rear wall of the air guide housing opposite to the through air duct;

[0019] A rear air inlet is provided in the area of ​​the rear wall of the casing opposite to the rear avoidance port, so that when the annular jet port blows airflow forward, the ambient air around the rear air inlet is prompted to enter the through air duct and mix with the heat exchange airflow introduced into the through air duct by the annular jet port.

[0020] Optionally, the air guide member includes a rear air guide ring, a middle air guide ring and a front air guide ring arranged in sequence from back to front;

[0021] The rear air guide ring, the middle air guide ring and the front air guide ring all have a front opening, a rear opening and an air flow channel that passes through the front opening and the rear opening from front to back to define the through air duct, and the front opening of the front air guide ring is connected to the front air outlet;

[0022] The rear air guide ring and the middle air guide ring are spaced apart, and the front section of the middle air guide ring is located radially inward of the rear section of the front air guide ring, and are spaced apart, so that the rear air guide ring and the middle air guide ring are used to define the annular jet port on the rear side, and the middle air guide ring and the front air guide ring are used to define the annular jet port on the front side.

[0023] Optionally, the front air guide ring is arranged to be inclined forward from bottom to top;

[0024] The projection of the front edge of the front air guide ring on a vertical plane parallel to the front and rear directions is a front edge projection line, the projection of the front edge of the front air outlet on the vertical plane is the front air outlet projection line, and the front edge projection line is parallel to the front air outlet projection line.

[0025] Optionally, at least a portion of a projection of the front air outlet on a vertical plane parallel to the front-to-back direction is located below the front side of the projection of the side air inlet on the vertical plane.

[0026] Optionally, the rear air guide ring comprises a ring body and an annular portion formed on the outer periphery of the front section of the ring body, and the ring body has the airflow channel that penetrates the front opening and the rear opening thereof from front to back;

[0027] The annular portion and the middle air guide ring define the annular jet port on the rear side, and the annular portion gradually shrinks from the rear to the front, and the rear end edge of the annular portion abuts against the inner side of the rear wall of the air guide housing.

[0028] Optionally, the air guide housing includes:

[0029] A rear cover shell with both the front side and the upper side open, wherein the rear wall of the rear cover shell is formed with the rear avoidance opening;

[0030] A matching installation ring that penetrates front and back is arranged at the front opening of the rear cover shell and defines the air guide cavity with the rear cover shell. The front opening of the matching installation ring is the front avoidance opening.

[0031] The front decorative ring is sleeved on the outer circumference of the matching installation ring to cover the matching installation ring and the rear cover shell.

[0032] Optionally, the wall-mounted air conditioner indoor unit further includes:

[0033] Two water receiving pans, corresponding to the two indoor heat exchangers one by one, respectively arranged below the corresponding indoor heat exchangers, for supporting the corresponding indoor heat exchangers and receiving condensed water flowing down from the indoor heat exchangers;

[0034] The two closing members correspond one to one with the two indoor heat exchangers, and are respectively arranged to close the front and rear sides and the upper and lower sides of the area between the corresponding indoor heat exchanger and the fan air inlet located on the same side as the indoor heat exchanger, so that the air entering the fan air inlet is all heat exchange air after heat exchange with the corresponding indoor heat exchanger.

[0035] The wall-mounted air conditioner indoor unit of the present invention has a front air outlet opened in the lower area of ​​the front wall of the casing, and the front wall of the casing is arranged to be inclined forward from bottom to top, so that the inclined front wall of the indoor unit is used to block the hot air flow blown out of the front air outlet from flowing back upward, so that the hot air flow blown out of the front air outlet is fully exchanged with the indoor ambient air and then sucked into the indoor unit to exchange heat with the indoor heat exchanger, thereby improving the heating effect.

[0036] Furthermore, the indoor unit of the wall-mounted air conditioner of the present invention increases the air intake volume and heat exchange efficiency of the indoor unit by disposing a double-suction centrifugal fan and two indoor heat exchangers in the aforementioned special position. At the same time, by combining the special positions of each air inlet of the indoor unit, it realizes the adjustment of the air intake difference of the two side air inlets on the left and right sides, thereby ensuring the stable operation of the double-suction centrifugal fan, improving the air supply stability, and reducing the fan noise.

[0037] Furthermore, in the indoor unit of the wall-mounted air conditioner of the present invention, the annular jet port of the air guide component blows air forward, prompting the ambient air at the rear to enter the through-air duct and mix with the heat exchange airflow, thereby increasing the air supply volume, making the airflow be delivered over a longer distance and making the delivered airflow softer, forming a comfortable wind that is warm but not dry, and cool but not cold.

[0038] Furthermore, in the indoor unit of the wall-mounted air conditioner of the present invention, the front air guide ring of the air guide component is arranged in a downward-facing manner as a whole, so that the air outlet of the front air outlet is blown toward the front and lower side, further avoiding the problem of hot air flow backflow during heating, and the downward-blown hot air flow can directly reach the ground, realizing foot-warming air supply; in addition, the special downward-facing arrangement of the air guide component and the special design of the relative position of the front air outlet and the two side air inlets can avoid the airflow blown out of the front air outlet from flowing back to the two side air inlets on the left and right sides, further improving the heating effect.

[0039] 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 become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0041] Figure 1 is a side view schematic diagram of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

[0042] Figure 2 is a three-dimensional schematic diagram of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

[0043] Figure 3 is an exploded schematic diagram of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

[0044] Figure 4 Schematic diagram of an exploded view of a double-suction centrifugal fan and a fan volute of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

[0045] Figure 5 is a schematic front view of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention, wherein the front panel is hidden;

[0046] Figure 6 is a side cross-sectional schematic diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;

[0047] Figure 7 is a schematic diagram of an air guide portion of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention; and

[0048] Figure 8 Schematic diagram of an explosion of an air guide portion of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present embodiment provides a wall-mounted air conditioner indoor unit 100. For the convenience of description, the directions such as "upper", "lower", "front", "rear", "top", "bottom", and "lateral" mentioned in the specification are defined according to the spatial position relationship of the wall-mounted air conditioner indoor unit 100 under normal working conditions. For example, Figure 1 As shown in FIG. 1 , the side of the wall-mounted air conditioner indoor unit 100 facing the user is the front, and the side close to the wall is the back. Figure 5 As shown, the lateral direction refers to a direction parallel to the width direction of the indoor unit 100, that is, the left-right direction.

[0050] Figure 1 is a side view schematic diagram of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, Figure 2 is a three-dimensional schematic diagram of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. Figure 3 1 is an exploded schematic diagram of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention.

[0051] The wall-mounted air conditioner indoor unit 100 of this embodiment may generally include: a casing 110 , an air supply component, and an indoor heat exchanger 101 .

[0052] A heat exchange and air supply cavity is defined in the housing 110. In the embodiment shown in the drawings, the housing 110 may include a housing 112 having a forward opening and a front panel 111 disposed at the forward opening of the housing 112, and the housing 112 and the front panel 111 cooperate to define the heat exchange and air supply cavity. The housing 112 may be formed by a top wall, a side wall, a rear wall, and a bottom wall, and the front panel 111 closes the forward opening of the housing 112, thereby closing the heat exchange and air supply cavity.

[0053] The housing 110 is provided with a top air inlet 112a, two side air inlets 112b and a front air outlet 111a. The top air inlet 112a is provided on the top wall of the housing 110, the two side air inlets 112b are provided on the two lateral side walls of the housing 110, and the front air outlet 111a is provided on the front wall of the housing 110. Figures 1 to 3 In the illustrated embodiment, the top wall of the housing 110 refers to the top wall of the cover 112 , the two lateral side walls of the housing 110 refer to the two lateral side walls of the cover 112 , and the front wall of the housing 110 refers to the front wall of the front panel 111 .

[0054] The air supply assembly is arranged in the heat exchange air supply cavity, and includes an air supply portion 120 and an air guide portion 130. An air supply fan for generating heat exchange airflow is arranged in the air supply portion 120. The air supply fan is configured to inhale ambient air from the surrounding environment of the two side air inlets 112b and the surrounding environment of the top air inlet 112a and to force the air to flow toward the air guide portion 130. The air guide portion 130 is configured to guide the airflow blown out by the air supply fan to the front air outlet 111a, so as to supply air to the indoor environment from the front air outlet 111a.

[0055] At least one indoor heat exchanger 101 is arranged in the heat exchange air supply cavity and is located on the air inlet flow path between the top air inlet 112a, the two side air inlets 112b and the air supply part 120. The indoor heat exchanger 101 is a part of the refrigeration system, and the refrigeration system can be implemented by a compression refrigeration cycle. The compression refrigeration cycle uses the compression phase change cycle of the refrigerant in the compressor, condenser, evaporator, and throttling device to achieve heat transfer. The refrigeration system can also be provided with a four-way valve to change the flow direction of the refrigerant so that the indoor heat exchanger 101 alternately acts as an evaporator or condenser to achieve cooling or heating functions. Since the compression refrigeration cycle in the air conditioner is well known to those skilled in the art, its working principle and structure will not be described in detail here.

[0056] In particular, in the present embodiment, the front air outlet 111a is provided in the lower area of ​​the front wall of the casing 110, and the front wall of the casing 110 is inclined forward from bottom to top, so that the inclined front wall of the indoor unit 100 is utilized to block the hot air flow blown out of the front air outlet 111a from flowing back upward, so that the hot air flow blown out of the front air outlet 111a is fully exchanged with the indoor ambient air and then is sucked into the indoor unit 100 for heat exchange with the indoor heat exchanger 101, thereby improving the heating effect.

[0057] In this embodiment, the type and position of the air supply fan and the positions of the air supply portion 120 and the air guide portion 130 can have various situations. For example, the air supply fan can be a centrifugal fan, an axial flow fan, a diagonal flow fan, etc., and the positions of the air supply portion 120 and the air guide portion 130 can be determined according to the type of the air supply fan.

[0058] Figure 4 1 is an exploded schematic diagram of a double-suction centrifugal fan 121 and a fan volute 122 of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. Figure 5 1 is a front view schematic diagram of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, wherein the front panel 111 is hidden.

[0059] In the embodiment shown in the drawings, the air supply portion 120 and the air guide portion 130 may be distributed along the height direction of the housing 110, and the air supply fan may be a double-suction centrifugal fan 121, the rotating shaft of the double-suction centrifugal fan 121 is arranged in a direction parallel to the width direction of the housing, so that the double-suction centrifugal fan 121 is arranged in the horizontal direction, and the lateral ends of the double-suction centrifugal fan 121 respectively have a fan air inlet 121a. The air supply portion 120 also includes a fan volute 122 arranged on the outer periphery of the double-suction centrifugal fan 121, and the fan volute 122 is connected to the air guide portion 130 to guide the airflow to the air guide portion 130.

[0060] The at least one indoor heat exchanger 101 mentioned above may be two indoor heat exchangers 101, which correspond one to one with the two fan air inlets 121a, and are respectively arranged on the air inlet flow path between the corresponding fan air inlet 121a and the side air inlet 112b located on the same side as the fan air inlet 121a, and are respectively arranged to exchange heat with the air entering through the corresponding side air inlet 112b and the air entering through the top air inlet 112a. That is, the two indoor heat exchangers 101 are arranged on the left and the right, the indoor heat exchanger 101 on the left is located between the side air inlet 112b on the left and the fan air inlet 121a on the left side of the double-suction centrifugal fan 121, and the indoor heat exchanger 101 on the right is located between the side air inlet 112b on the right and the fan air inlet 121a on the right side of the double-suction centrifugal fan 121. Part of the ambient air entering the casing 110 through the top air inlet 112a and part of the ambient air entering the casing 110 through the side air inlet 112a on the left are The ambient air entering from b exchanges heat with the indoor heat exchanger 101 on the left, then enters the fan volute 122 through the fan inlet 121a on the left side of the double-suction centrifugal fan 121, and enters the casing 110 through the top air inlet 112a; the other part of the ambient air and the ambient air entering from the side air inlet 112b on the right exchange heat with the indoor heat exchanger 101 on the right, and then enters the fan volute 122 through the fan inlet 121a on the right side of the double-suction centrifugal fan 121.

[0061] The indoor unit 100 of this embodiment is provided with the double suction centrifugal fan 121 and two indoor heat exchangers 101 at the aforementioned special position, and at the same time, the air intake volume and heat exchange efficiency of the indoor unit 100 are increased. By combining the special positions of each air inlet of the indoor unit 100, the adjustment of the air intake difference of the two side air inlets 112b on the left and right sides is realized, thereby ensuring the stable operation of the double suction centrifugal fan 121, improving the air supply stability, and reducing the fan noise. For example, when the air intake resistance on the left and right sides is large, due to the same negative pressure conditions on the left and right sides inside the double suction centrifugal fan 121, the top air inlet 112a adaptively distributes the air intake ratio on the left and right sides, and automatically compensates for the air intake difference of the two side air inlets 112b on the left and right sides. However, the existing wall-mounted air conditioner indoor unit 100 is limited by the user's installation environment, and the left and right spaces of the indoor unit 100 are limited. The air intake ratios on the left and right sides of the indoor unit 100 are often different, resulting in low heat exchange efficiency, unstable fan operation, unstable air supply, poor cooling and heating effects, and even abnormal sounds. The indoor unit 100 of this embodiment effectively solves this problem through the design of the air inlet position and the special design of the air supply fan.

[0062] Figure 6 is a side cross-sectional schematic diagram of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, Figure 71 is a schematic diagram of an air guide portion 130 of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. Figure 8 1 is an exploded schematic diagram of an air guide portion 130 of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention.

[0063] In some embodiments, the air guide portion 130 includes an air guide shell 1340 and an air guide component 1310. The air guide shell 1340 defines an air guide cavity that communicates with the fan volute 122. For example, the upper end of the air guide cavity has an air flow inlet 130c that connects with the air flow outlet at the lower end of the fan volute 122. The front side of the air guide housing 1340 and the area opposite to the front air outlet 111a have a front avoidance port 135b that communicates with the air guide cavity. The air guide component 1310 is arranged in the air guide cavity, and its front end passes through the front avoidance port 135b to dock with the front air outlet 111a. The air guide component 1310 has a through-air duct 130b that extends front and back and penetrates front and back, and at least one annular jet port 130a that extends around the front and back direction. The annular jet port 130a is configured to guide the heat exchange airflow blown out by the double-suction centrifugal fan 121 to the through-air duct 130b, and blow the airflow forward to drive the airflow in the through-air duct 130b to be sent forward to the front air outlet 111a. The heat exchange airflow discharged by the double-suction centrifugal fan 121 is accelerated by the annular jet port 130a, and is quickly blown forward from the through-air duct 130b to the indoor environment, thereby increasing the air supply distance.

[0064] To cooperate with the through air duct 130b, a rear avoidance port (not shown) may be provided in the area opposite to the rear wall of the air guide shell 1340 and the through air duct 130b, and a rear air inlet 134a may be provided in the area opposite to the rear avoidance port. When the annular jet port 130a blows air flow forward, the ambient air around the rear air inlet 134a may be prompted to enter the through air duct 130b and mix with the heat exchange air flow introduced into the through air duct 130b by the annular jet port 130a, thereby increasing the air supply volume and making the supplied air flow softer, forming a comfortable wind that is warm but not dry, and cool but not cold.

[0065] The rear wall of the housing 110 may include a rear wall upper section 1121 extending vertically, a rear wall transition section 1123 extending from the lower end of the rear wall upper section 1121 to the lower front, and a rear wall lower section 1122 extending from the lower end of the rear wall transition section 1123 to the lower front, which are sequentially distributed from top to bottom. A boss 1124 protruding backwards is also formed at the junction of the rear wall transition section 1123 and the rear wall lower section 1122 and the area corresponding to the front air outlet 111a. The rear air inlet 134a may be formed in the rear wall upper section 1121 and sequentially extend downwards. As for the rear wall transition section 1123 and the boss 1124, the wall-mounted indoor unit 100 is installed on the wall through its rear wall upper section 1121. Since the rear wall transition section 1123 and the rear wall lower section 1122 are farther away from the wall than the rear wall upper section 1121, there is air circulation space behind and below the rear air inlet 134a, thereby ensuring the air intake volume and smoothness of the rear air inlet 134a, allowing natural wind to better enter the through air duct 130b of the air guide component 130 and mix with the heat exchange air, thereby achieving a more ideal air induction effect.

[0066] In some embodiments, the air guide member 1310 includes a rear air guide ring 131, a middle air guide ring 132, and a front air guide ring 133 arranged in sequence from back to front, and the rear air guide ring 131, the middle air guide ring 132, and the front air guide ring 133 all have a front opening, a rear opening, and an air flow channel that passes through the front opening and the rear opening from front to back to define a through air duct 130b, the front opening of the front air guide ring 133 is connected to the front air outlet 111a, the rear air guide ring 131 and the middle air guide ring 132 are spaced apart, and the front area of ​​the middle air guide ring 132 is The section is located radially inside the rear section of the front air guide ring 131 and is arranged at intervals, so that the rear annular jet port 130a is defined by the rear air guide ring 131 and the middle air guide ring 132, and the front annular jet port 130a is defined by the middle air guide ring 132 and the front air guide ring 133, so that two annular jet ports 130a distributed front and back are constructed, so that the airflow blown out of the annular jet port 130a on the front side guides the airflow blown out of the annular jet port 130a on the rear side to flow forward, thereby increasing the overall air supply distance and air supply volume. The inventor creatively discovered that the air guide component 1310 having two annular jet ports 130a distributed front and back not only significantly increases the air supply distance, but also greatly increases the air supply volume compared to the air guide component 1310 having only one annular jet port 130a.

[0067] The rear air guide ring 131 , the middle air guide ring 132 and the front air guide ring 133 of the air guide member 1310 may be constructed as an integrated body to simplify the manufacturing process of the air guide member 1310 and facilitate the overall assembly of the air guide member 1310 .

[0068] The front air guide ring 133 can be tilted forward from bottom to top, and the projection of the front edge of the front air guide ring 133 on a vertical plane parallel to the front-to-back direction is the front edge projection line, and the projection of the front edge of the front air outlet 111a on a vertical plane is the front air outlet projection line, and the front edge projection line is parallel to the front air outlet projection line. In other words, the front air guide ring 133 is downward-bent as a whole, and the degree of downward-bent satisfies that the front edge projection line is parallel to the front air outlet projection line, thereby not only matching the front opening of the front air guide ring 133 with the front air outlet 111a to increase the smoothness of the air flow, but also changing the overall air guide direction of the front section of the through-air duct 130b, so that the air outlet of the front air outlet 111a is blown toward the front side and downward, further avoiding the problem of hot air flow backflow during heating, and the downward-blown hot air flow can directly reach the ground to achieve foot-warming air supply.

[0069] At least a portion of the projection of the front air outlet 111a on a vertical plane parallel to the front-to-back direction is located below and in front of the projection of the side air inlet 112b on the vertical plane. This further avoids the problem of hot air flowing back to the top air inlet 112a and, combined with the special design of the aforementioned front air guide ring 133, prevents the airflow blown from the front air outlet 111a from flowing back to the two side air inlets 112b on the left and right sides.

[0070] The rear air guide ring 131 may include a ring body 1311 and an annular portion 1312 formed on the outer periphery of the front section of the ring body 1311. The ring body 1311 has an airflow channel that runs through its front opening and rear opening from front to back. The annular portion 1312 and the middle air guide ring 132 define a rear annular jet port 130a, and the annular portion 1312 gradually shrinks from back to front, and the rear end edge of the annular portion 1312 abuts against the inner side of the rear wall of the air guide housing 1340. The rear air guide ring 131 designed in this way can effectively guide the airflow to flow forward by using its gradually shrinking annular portion 1312, which is conducive to the mixing of heat exchange air and natural wind, and at the same time prevents air leakage at the rear side of the rear air guide ring 131, ensuring that the airflow discharged by the double-suction centrifugal fan 121 can completely enter the through-air duct 130b from the rear annular jet port 130a and the front annular jet port 130a.

[0071] The middle air guide ring 132 can also be tilted forward from bottom to top, changing the air guide direction of the roughly middle section of the through-air duct 130b to guide the airflow to the front and lower side. The middle air guide ring 132 can first gradually shrink and then gradually expand from back to front, and cooperate with the gradually shrinking annular portion 1312 of the rear air guide ring 131 to more effectively guide the airflow, which is conducive to the mixing of natural wind and heat exchange air and improves the uniformity of air supply. The front air guide ring 133 can extend in a gradually expanding manner from back to front, while effectively guiding the airflow to flow forward, expanding the outlet area of ​​the front air guide ring 133 to expand the air supply range.

[0072] In some embodiments, the air guide housing 1340 may include a rear cover 134 with both the front side and the upper side open, a matching installation ring 135 and a front decorative ring 136 that penetrates from front to back, a rear wall of the rear cover 134 is formed with a rear avoidance opening 134a, the matching installation ring 135 is arranged at the front opening of the rear cover 134, and defines the aforementioned air guide cavity for accommodating the air guide member 1310 with the rear cover 134, the front opening of the matching installation ring 135 is the aforementioned front avoidance opening 135b, and the front decorative ring 136 is sleeved on the outer periphery of the matching installation ring 135 to shield the matching installation ring 135 and the rear cover 134, that is, the matching installation ring 135 and the rear cover 134 cannot be seen from the front of the wall-mounted indoor unit 100, so as to ensure the beauty of the front of the wall-mounted indoor unit 100. In addition, the overall layout of the air guide portion 130 constructed in this way is relatively compact and occupies less space.

[0073] The rear cover shell 134 can be fixed to the rear wall of the casing 110, and the matching mounting ring 135 can be set at the front opening of the rear cover shell 134 to define the aforementioned air guide cavity together with the rear cover shell 134. The air guide component 1310 and the matching mounting ring 135 can be snap-fitted and can be fixed to the rear cover shell 134 by screws. The front decorative ring 136 and the matching mounting ring 135 can also be snap-fitted and can be fixed to the rear cover shell 134 by screws, thereby ensuring that the structure of the air guide shell 1340 and the air guide component 1310 are compact and the assembly is stable.

[0074] In some embodiments, the wall-mounted air conditioner indoor unit 100 further includes two water receiving pans 103 and two sealing members 102. The two water receiving pans 103 correspond to the two indoor heat exchangers 101 one by one, and are respectively arranged below the corresponding indoor heat exchangers 101, for supporting the corresponding indoor heat exchangers 101 and receiving the condensed water flowing down from the indoor heat exchangers 101. The two sealing members 102 correspond to the two indoor heat exchangers 101 one by one, and are respectively arranged to seal the front and rear sides and the upper and lower sides of the area between the corresponding indoor heat exchanger 101 and the fan air inlet 121a located on the same side as the indoor heat exchanger 101, so that the air entering the fan air inlet 121a is all heat exchanged air after heat exchange with the corresponding indoor heat exchanger 101, that is, to ensure that the air sucked into the fan air inlet 121a on both sides of the double-suction centrifugal fan 121 is all air that has been heat exchanged through the corresponding indoor heat exchanger 101, so as to improve the cooling and heating effects of the wall-mounted air conditioner indoor unit 100.

[0075] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A wall-mounted air conditioner indoor unit, comprising: A casing, wherein a heat exchange air supply cavity is defined therein, the casing is provided with a top air inlet, two side air inlets and a front air outlet, the top air inlet is provided on the top wall of the casing, the two side air inlets are provided on two lateral side walls of the casing respectively, the front air outlet is provided on the lower area of ​​the front wall of the casing, and the front wall of the casing is arranged to be inclined forward from bottom to top; An air supply assembly is arranged in the heat exchange air supply cavity, comprising an air supply portion and an air guide portion, wherein an air supply fan is arranged in the air supply portion, wherein the air supply fan is configured to inhale ambient air from the surrounding environment of the two side air inlets and the surrounding environment of the top air inlet and cause the air to flow toward the air guide portion, and wherein the air guide portion is configured to guide the airflow blown out by the air supply fan toward the front air outlet; At least one indoor heat exchanger is disposed in the heat exchange air supply cavity and is located on the air inlet flow path between the top air inlet, the two side air inlets and the air supply portion; The air supply portion and the air guide portion are distributed along the height direction of the housing; The air supply fan is a double-suction centrifugal fan, the rotating shaft of the double-suction centrifugal fan is arranged in a direction parallel to the width direction of the casing, so that the double-suction centrifugal fan is arranged in the transverse direction, and the transverse ends of the double-suction centrifugal fan are respectively provided with a fan air inlet; The at least one indoor heat exchanger is two indoor heat exchangers, the two indoor heat exchangers correspond to the two fan air inlets one by one, are respectively arranged on the air inlet flow path between the corresponding fan air inlet and the side air inlet located on the same side as the fan air inlet, and are respectively arranged to exchange heat with the air entering through the corresponding side air inlet and with the air entering through the top air inlet; The air supply part also includes a fan volute, which is arranged on the outer periphery of the double-suction centrifugal fan and is connected to the air guide part; The air guide portion comprises: An air guide housing, which defines an air guide cavity in communication with the fan volute, and a front avoidance opening in communication with the air guide cavity is provided in an area of ​​the front side of the air guide housing opposite to the front air outlet; an air guide member, arranged in the air guide cavity, with its front end passing through the front avoidance port to dock with the front air outlet, the air guide member having a through-air duct extending front to back and penetrating front to back and at least one annular jet port extending around the front and rear direction, the annular jet port being configured to guide the heat exchange airflow blown out by the double-suction centrifugal fan to the through-air duct and blow the airflow forward to drive the airflow in the through-air duct forward to the front air outlet; A rear avoidance opening is provided in an area of ​​the rear wall of the air guide housing opposite to the through air duct; A rear air inlet is provided in an area of ​​the rear wall of the housing opposite to the rear avoidance port, so that when the annular jet port blows airflow forward, ambient air around the rear air inlet is forced to enter the through-air duct and mix with the heat exchange airflow introduced into the through-air duct by the annular jet port; The air guide member comprises a rear air guide ring, a middle air guide ring and a front air guide ring which are arranged in sequence from the back to the front; The rear air guide ring, the middle air guide ring and the front air guide ring all have a front opening, a rear opening and an air flow channel that passes through the front opening and the rear opening from front to back to define the through air duct, and the front opening of the front air guide ring is connected to the front air outlet; The rear air guide ring and the middle air guide ring are arranged at intervals, and the front section of the middle air guide ring is located radially inward of the rear section of the front air guide ring, and are arranged at intervals, so that the rear air guide ring and the middle air guide ring define the annular jet port on the rear side, and the middle air guide ring and the front air guide ring define the annular jet port on the front side; The front air guide ring is arranged to be inclined forward from bottom to top; The projection of the front edge of the front air guide ring on a vertical plane parallel to the front-to-back direction is the front edge projection line, the projection of the front edge of the front air outlet on the vertical plane is the front air outlet projection line, and the front edge projection line is parallel to the front air outlet projection line; Two water receiving pans correspond to the two indoor heat exchangers one by one and are respectively arranged below the corresponding indoor heat exchangers to support the corresponding indoor heat exchangers and receive condensed water flowing down from the indoor heat exchangers.

2. The wall-mounted air conditioner indoor unit according to claim 1, wherein At least a portion of a projection of the front air outlet on a vertical plane parallel to the front-rear direction is located below the front side of the projection of the side air inlet on the vertical plane.

3. The wall-mounted air conditioner indoor unit according to claim 1, wherein The rear air guide ring includes a ring body and an annular portion formed on the outer periphery of the front section of the ring body, and the ring body has the air flow channel that passes through the front opening and the rear opening thereof from front to back; The annular portion and the middle air guide ring define the annular jet port on the rear side, and the annular portion gradually shrinks from the rear to the front, and the rear end edge of the annular portion abuts against the inner side of the rear wall of the air guide housing.

4. The wall-mounted air conditioner indoor unit according to claim 3, wherein The air guide housing comprises: A rear cover shell with both the front side and the upper side open, wherein the rear wall of the rear cover shell is formed with the rear avoidance opening; A matching installation ring that penetrates front and back is arranged at the front opening of the rear cover shell and defines the air guide cavity with the rear cover shell. The front opening of the matching installation ring is the front avoidance opening. The front decorative ring is sleeved on the outer circumference of the matching installation ring to cover the matching installation ring and the rear cover shell.

5. The wall-mounted air conditioner indoor unit according to claim 1, further comprising: The two closing members correspond one to one with the two indoor heat exchangers, and are respectively arranged to close the front and rear sides and the upper and lower sides of the area between the corresponding indoor heat exchanger and the fan air inlet located on the same side as the indoor heat exchanger, so that the air entering the fan air inlet is all heat exchange air after heat exchange with the corresponding indoor heat exchanger.

Images