CN108167940A - Wall-hanging indoor unit of air conditioner - Google Patents

Abstract

The present invention provides a wall-mounted air conditioner indoor unit, which comprises: a casing, which includes a casing and a front panel arranged in front of the casing, an air inlet is opened on the front panel, and a long Circular air supply port; the air injection part is arranged in the air supply port, and it includes an annular inner wall and an annular outer wall, wherein the annular inner wall defines an air extraction hole, and the annular outer wall and the annular inner wall jointly define an air supply chamber, and the annular outer wall and the annular inner wall are in contact with each other. The connected edge forms an air jet, which is used to eject the air flow of the air supply chamber forward, and make the air at the rear of the air supply port sucked through the air exhaust hole; the air supply assembly includes a centrifugal fan and an air guide component, and the centrifugal fan It is configured such that the ambient air enters through the air inlet to exchange heat with the heat exchanger, and the airflow after heat exchange is discharged to the air supply chamber through the air guide component. The indoor unit of the wall-mounted air conditioner in this proposal has a compact structure, soft air supply and good comfort.

Description

wall mounted air conditioner indoor unit

technical field

The invention relates to an air conditioner, in particular to an indoor unit of a wall-mounted air conditioner.

Background technique

Air conditioners are one of the necessary household appliances. As users have higher and higher requirements for comfort and health, the air supply method of traditional air conditioners is to send cold air into the room, then slowly convect with the surrounding air, and the heat exchange speed It is slower and cannot give people a feeling of rapid cooling, and direct blowing from the air outlet of the indoor unit to people will have adverse effects on the health of users, and air-conditioning diseases are prone to occur.

In response to this problem, there have been indoor units with jet outlets for soft air supply in the prior art, which use smaller air outlets to drive the surrounding air to blow out, so that the air after heat exchange is mixed with the surrounding air and sent out, but the jet outlets The higher requirements on the structure make the jet outlets mostly used in cabinet-type indoor units with ample space. In order to meet the structural requirements of the jet outlet, the hanging indoor unit using the jet outlet often needs to set the casing into a circular or other irregular shape. There is a gap in cognition, and it is not easy to be accepted by users; on the other hand, it also brings troubles to the installation of the hanging indoor unit, so the hanging indoor unit using the jet outlet cannot meet the user's requirements.

Contents of the invention

One object of the present invention is to provide an indoor unit of a wall-mounted air conditioner with soft air supply and fast heat exchange.

A further object of the present invention is to make the indoor unit of the wall-mounted air conditioner compact in structure and conform to the usage habits of users.

In particular, the present invention provides an indoor unit of a wall-mounted air conditioner, which includes:

A casing, the casing includes a casing and a front panel arranged in front of the casing, an air inlet is opened on the front panel, and an oblong air supply opening is opened below the air inlet;

The air injection part is arranged in the air supply port, and it includes an annular inner wall and an annular outer wall, wherein the annular inner wall defines a suction hole, the annular outer wall and the annular inner wall jointly define an air supply chamber, and the edge where the annular outer wall and the annular inner wall meet forms an air injection port , the air outlet is used to eject the airflow of the air supply chamber forward, and make the air behind the air supply outlet sucked through the air exhaust hole;

a heat exchanger disposed inside the housing; and

The air supply assembly includes: a centrifugal fan and an air guide component, the centrifugal fan is configured to allow ambient air to enter from the air inlet to exchange heat with the heat exchanger, and discharge the heat-exchanged airflow to the air supply cavity through the air guide component .

Optionally, the indoor unit of the wall-mounted air conditioner further includes a baffle, which is longitudinally arranged above the air jet component inside the casing, and a heat exchanger accommodating chamber for arranging the heat exchanger is defined between the baffle and the front panel.

Optionally, a through hole is provided in the center of the partition for the air collecting port of the centrifugal fan to pass through, so that the centrifugal fan sucks the air in the heat exchanger accommodation chamber to exchange heat with the heat exchanger;

The impeller and the volute of the centrifugal fan are arranged in the space defined by the partition and the casing, and the exhaust port of the volute faces the side wall of the housing;

Optionally, the air guide components include:

A drainage section, which has an air inlet of the air guide component, and at least part of the drainage section is in a spiral shape, guiding the direction of the airflow discharged by the centrifugal fan downward;

The air supply section is connected with the drainage section, and defines an air collection chamber inside to receive the airflow discharged by the centrifugal fan. cavity.

Optionally, the air guiding section tapers from the air inlet of the air guiding component along the airflow direction; and the air supply section forms a volute along the air outlet direction of the air guiding section, so as to reduce the wind resistance of the airflow in the air collecting cavity.

Optionally, the air supply section is located below the heat exchanger housing chamber, and its distance in the front and rear directions is greater than that of the drainage section, and the exhaust port of the air supply section is arranged at the front of the side of the air collection chamber that is close to the air injection component.

Optionally, the air injection part includes two intervals of horizontal sections and two arc sections connecting the two horizontal sections, wherein the arc section on one side of the two arc sections is circular in shape. The air inlet of the air injection part is opened on the outer wall, and is connected with the exhaust outlet of the air supply section.

Optionally, the rear side edge of the annular inner wall is recessed into the air supply chamber, and the position opposite to the rear side edge of the annular outer wall has an outward flange, so that the gap between the annular outer wall and the rear side edge of the annular inner wall The gap between them forms the air jet.

Optionally, the annular inner wall extends forward from its rear side edge to form a continuously outwardly expanding Coanda surface; and the section of the annular outer wall at the rear side of the air injection component is helical in section, so that the airflow of the air supply chamber is along the annular After the outer wall is ejected from the air outlet, it is sent forward along the Coanda surface formed by the annular inner wall, and drives the ambient air drawn out behind the air outlet.

Optionally, the casing and the lower part of the front panel form an air supply opening that runs through front and back, and the position where the air supply opening is formed on the rear side of the casing is recessed forward, so that there is an air circulation area behind the air supply opening.

In the indoor unit of the wall-mounted air conditioner of the present invention, an oblong air supply port is arranged under the front panel for arranging a ring-shaped air injection part, so that the air flow through the heat exchanger is ejected from the air injection port of the air injection part and sucked. The ambient air around the air outlet is mixed with the heat exchange airflow with severe temperature difference in the surrounding environment, so as to ensure that the airflow sent out is soft and the feeling of blowing to the human body is more comfortable. On the one hand, the air supply volume is increased, and the indoor air flow is accelerated, which can The overall indoor temperature is lowered evenly, and the air outlet of the indoor unit of the wall-mounted air conditioner of the present invention is strip-shaped, which is arranged below the casing. The overall structure is similar to the existing traditional hanging indoor unit, and is easily accepted by users. Moreover, it is easy to replace the existing traditional hanging indoor unit, and the installation position is flexible.

Further, in the indoor unit of the wall-mounted air conditioner of the present invention, the external air enters the heat exchanger accommodation chamber where the heat exchanger is located from the upper part in the front, and is sent out from the lower part. Since the distance of the jet airflow is relatively long, it will not cause the backflow of the airflow sent out. Moreover, by increasing the area of the air inlet and reducing the circulation distance of the airflow in the indoor unit, the unobstructed heat exchange airflow is ensured, and the problem of ash falling on the upper opening is avoided, further making the structure of the indoor unit more compact.

Furthermore, the indoor unit of the wall-mounted air conditioner of the present invention has compact internal components, and the space in the housing can be fully utilized to make the indoor unit of the wall-mounted air conditioner thinner.

Furthermore, the indoor unit of the wall-mounted air conditioner of the present invention has improved the position and structure of heat exchangers, centrifugal fans, air guide components and other components. On the one hand, the occupied space can be reduced, and on the other hand, the The wind resistance of the supply air is reduced.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic appearance diagram of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

Fig. 2 is a schematic exploded view of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of an air jet component in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

Fig. 4 is a schematic cross-sectional air flow diagram taken along the section line A-A in Fig. 3;

5 is a schematic diagram of internal components in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention; and

Fig. 6 is a schematic diagram of an air supply assembly in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention.

Detailed ways

This embodiment provides a wall-mounted air conditioner indoor unit 100. For the convenience of description, the directions of "up", "down", "front", "rear", "top" and "bottom" mentioned in the instructions are all in accordance with the wall-mounted air conditioner. The spatial position relationship of the indoor unit 100 in a normal working state is limited, for example, the side of the wall-mounted air conditioner indoor unit 100 facing the user is the front, and the side close to the installation position is the rear.

1 is a schematic external view of a wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention, and FIG. 2 is a schematic exploded view of the wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention. The indoor unit 100 of the wall-mounted air conditioner may generally include: a casing 110 , an air injection component 120 , a heat exchanger 140 , and an air supply assembly. The casing 110 may include: a casing 112 and a front panel 114 disposed in front of the casing 112 . The casing 112 is formed by a top wall, a side wall, and a back, and defines a space for accommodating internal components. The front panel 114 is arranged in front of the casing 112 to close the internal space of the casing 112 . The housing 110 is provided with an air inlet 116 and an air outlet 117 . For example, the upper middle part of the front panel 114 is provided with an air inlet 116, and below the air inlet 116, that is, the bottom position of the front panel 114 is provided with an oblong air supply opening 117, wherein the air supply opening 117 is arranged in an oblong shape On the lower part of the casing 110 , and in communication with the surrounding environment in the upstream of the air blowing direction, the air injection part 120 is disposed in the air blowing port 117 .

The upper middle part of the front panel 114 is provided with an air inlet 116, and the external ambient air can enter the interior of the indoor unit 100 from the upper middle part of the front panel 114, so that it can smoothly enter the heat exchanger accommodation chamber 144 where the heat exchanger 140 is located for heat exchange, ensuring the heat exchange. For the unobstructed flow of hot air, the air inlet 116 can be formed by grilles, meshes and the like. The setting structure of the air inlet 116 can ensure the integrity of the appearance and improve the aesthetics of the machine body. Compared with the prior art where the air inlet is generally arranged at the top, and dust is easy to fall into the interior of the indoor unit in an idle state, the indoor unit 100 of this embodiment enters the air from the front, the area of the air intake is large, and the problem of dust falling is avoided. External air enters the heat exchanger housing chamber 144 where the heat exchanger 140 is located from the middle and upper part of the front panel 114 of the indoor unit 100, and is sent out from the air outlet 117 at the lower part. Since the distance of the jet air flow is relatively long, it will not cause backflow of the air flow sent out, and By increasing the area of the air inlet 116 and reducing the circulation distance of the airflow in the indoor unit. In some optional embodiments, the air inlet 116 may be formed by a grille, and the grille may be inclined, so that the external air sucks in the air obliquely downward, so as to avoid affecting the air supply from the air supply port 117 .

In some preferred embodiments, the air supply port 117 can be provided through the lower part of the housing 110 (the corresponding positions of the casing 112 and the front panel 114 are opened with oblong through holes, thereby forming the front and rear through the air supply port 117 The position where the air supply port 117 is formed on the rear side of the casing 112 is recessed forward, so that there is an air circulation area 118 behind the air supply port 117, so that the inside of the air supply port 117 is communicated with the air circulation area 118, for the air ejected by the air injection member 120 The heat exchange gas can draw ambient air from the air circulation area 118 and mix it. The temperature difference between the mixed airflow and the surrounding environment is small and softer, and the air supply volume is larger, which speeds up the flow of indoor air.

Alternatively, the air injection part 120 can also be arranged at the lower part of the housing 110 near the front, and the housing 110 has a hollowed out area communicating with the surrounding environment at the rear of the air injection part 120, that is, in the upstream of the air blowing direction. The heat exchange gas ejected by the air ejection part 120 can suck ambient air through the hollowed-out area for mixing.

The heat exchanger 140 is disposed inside the casing 110 . The heat exchanger 140 exchanges heat with the air flowing therethrough to change the temperature of the air flowing therethrough. The heat exchanger 140 is a part of the refrigeration system, and the refrigeration system can be implemented by using a compression refrigeration cycle, which uses the compression phase change cycle of the refrigerant in the compressor, condenser, evaporator, and throttling device to transfer heat. The refrigeration system can also be provided with a four-way valve to change the flow direction of the refrigerant, so that the heat exchanger 140 of the indoor unit can be alternately used as an evaporator or a condenser to realize cooling or heating functions. Since the compression refrigeration cycle in an air conditioner is well known to those skilled in the art, its working principle and structure will not be repeated here. The heat exchanger 140 may be a plate type, and is arranged against the front panel 114 of the casing 110 .

The air supply assembly includes: a centrifugal fan 131 and an air guiding component 136 . The centrifugal fan 131 is used as the power source of the airflow in the indoor unit 100, and can be configured so that the ambient air enters from the air inlet 116 and exchanges heat with the heat exchanger 140, and after passing through the centrifugal fan 131, it is discharged to the downstream of the airflow, and finally passes through the air injection part 120 sent to the outside of the indoor unit 100. The air guiding part 136 is connected between the exhaust port of the centrifugal fan 131 and the air supply chamber of the air injection part 120, and is used for guiding the airflow discharged by the centrifugal fan 131 into the air supply chamber.

The air injection part 120 is arranged in the air supply port 117 and has an overall oblong shape (or racetrack shape). The center of the air injection part 120 defines an air exhaust hole 123, and the air exhaust hole 123 runs through from front to back. The size and specification of the air jet component 120 and its internal components can be set according to the air supply capacity of the centrifugal fan 131 of the air supply assembly and the specification position of the air guide component 136 . Fig. 3 is a schematic diagram of the air injection part 120 in the indoor unit 100 of the wall-mounted air conditioner according to an embodiment of the present invention, and Fig. 4 is a schematic cross-sectional air flow diagram taken along the section line A-A in Fig. 3 .

The air injection part 120 includes an annular inner wall 121 and an annular outer wall 122 , the annular inner wall 121 and the annular outer wall 122 together form the above-mentioned ellipse, and the inner side of the annular inner wall 121 is a draft hole 123 . The edge of the annular outer wall 122 and the annular inner wall 121 forms an air jet 124 , and the air jet 124 is used to eject the airflow of the air supply chamber 125 forward, and make the air at the rear of the air supply port 117 sucked through the exhaust hole 123 .

The rear side edge 126 of the annular inner wall 121 is recessed into the air supply chamber 125, and the position opposite to the rear side edge 126 of the annular outer wall 122 has an outward flanging 127, so that the annular outer wall 122 and the annular inner wall 121 The gap between the rear side edges 126 of the air jets 124 is formed. The rear edge 126 of the annular inner wall 121 recessed into the air supply chamber 125 can also guide the direction of the airflow, so that the airflow in the air supply chamber 125 can be sent out from the air injection port 124 smoothly.

Annular inner wall 121 extends forward from its rear side edge 126 to form a continuous outwardly expanding Coanda surface; After the annular outer wall 122 is ejected from the air outlet 124 , it is sent forward along the Coanda surface formed by the annular inner wall 121 , and drives the ambient air drawn out behind the air outlet 117 . The inclination angle of the annular inner wall 121 extending forward and continuously extending outward can be 5 to 15 degrees. The larger the inclination angle, the faster the outward expansion speed of the airflow ejected from the air injection port 124. After a large number of tests, the inclination angle of the annular inner wall 121 The expansion inclination angle can be set between 6 and 10 degrees, which is more conducive to mixing with the ambient air in the ventilation holes 123 .

The annular inner wall 121 and the annular outer wall 122 jointly define the annular air supply chamber 125 inside the air injection part 120. The annular inner wall 121 and the annular outer wall 122 respectively have two horizontal sections 128 spaced apart and two sections connecting the two horizontal sections 128. The arc section 129, wherein the annular outer wall 122 of the arc section 129 on one side of the air guiding part 136 among the two arc sections 129 is provided with an air inlet of the air injection part 120, which is used to receive the air supply provided by the air supply assembly. The air after heat exchange. A support member 146 can be provided on the outer side of the arc section 129 on the other side, so as to better fix the air injection component 120 .

The aforementioned sections of the annular inner wall 121 and the annular outer wall 122 are formed from a plurality of connected parts, and in some preferred embodiments, the annular inner wall 121 and the annular outer wall 122 may be formed from a unitary moulding.

The air injection port 124 may be a continuous annular groove. In some optional embodiments, the air injection port 124 may also be formed on a part of the annular inner wall 121 and the annular outer wall 122 , or be formed in multiple intervals. For example, the air injection port 124 can only be provided on the horizontal section 128 of the air injection component 120 , so that the air injection is more uniform and can effectively drive the ambient air in the ventilation hole 123 . In order to increase the jet flow velocity of the jet port 124, the width of the jet port 124 can be set to 1 to 3 mm. After a large number of tests, the width of the jet port 124 can be preferably set to about 2 mm. The jet port 124 of this size and width can ensure the heat exchange air flow The jet speed can reduce the wind resistance loss of the heat exchange airflow as much as possible and reduce the noise. In FIG. 4 , the solid line arrows indicate the flow direction of the ambient air, and the dotted line arrows indicate the flow direction of the heat exchange air flow ejected from the air injection port 124 .

In some preferred embodiments, the air jet component 120 can also be driven by a motor and a transmission mechanism to realize overall up and down swing, adjust the air supply angle, and realize swing air supply, thereby making the air outlet range wider.

FIG. 5 is a schematic diagram of internal components in an indoor unit 100 of a wall-mounted air conditioner according to an embodiment of the present invention. The interior of the indoor unit 100 of the wall-mounted air conditioner further includes a partition 143 , which is longitudinally disposed above the air injection component 120 inside the housing 110 , and a heat exchanger accommodation cavity 144 is defined between the partition 143 and the front panel 114 . The partition plate 143 may have a recess adapted to the shape of the heat exchanger 140 , so that the heat exchanger 140 may be fixed in the heat exchanger accommodation cavity 144 . The plate-shaped heat exchanger 140 is arranged in the heat exchanger accommodation cavity 144. In some optional embodiments, the heat exchanger 140 can be multi-stage, and one part is arranged against the front panel 114, and the other part is arranged against the casing. 112 top wall. The position of the heat exchanger 140 can be set according to the position of the air inlet 116 .

A through hole 145 is provided in the center of the partition 143 for the air collecting port 132 of the centrifugal fan 131 to pass through, so that the centrifugal fan 131 sucks the air in the heat exchanger accommodation cavity 144 to exchange heat with the heat exchanger 140 . The impeller 133 and the volute 134 of the centrifugal fan 131 are arranged in the space defined by the partition 143 and the casing 112, and the exhaust port of the volute 134 faces the side wall of the casing 110; The exhaust ports of the shells 134 meet.

Fig. 6 is a schematic diagram of the air supply assembly in the indoor unit 100 of the wall-mounted air conditioner according to an embodiment of the present invention. The air supply assembly includes: a centrifugal fan 131 and an air guiding component 136 . In order to ensure the air jet velocity of the air jet component 120, the air supply assembly of this embodiment adopts the centrifugal fan 131 as the power source of the air flow.

According to the principle of converting kinetic energy into potential energy, the centrifugal fan 131 uses the high-speed rotating impeller 133 to accelerate the gas, then decelerates and changes the flow direction to convert the kinetic energy into potential energy. It generally includes a gas collecting port 132 , an impeller 133 and a volute 134 . The gas collection port 132 of the centrifugal fan 131 is the air inlet of the blower fan 131, and its effect is to ensure that the air flow can evenly fill the inlet interface of the impeller 133, reducing flow loss. The direction is tapered to form a bell mouth, and the air in the heat exchanger accommodation cavity 144 that exchanges heat with the heat exchanger 140 can be sucked into the impeller 133 as much as possible. When the impeller 133 of the centrifugal fan 131 is driven by the high-speed motor 135 to rotate with the shaft, the gas between the impellers 133 rotates with the impeller 133 to obtain centrifugal force, and the gas is thrown out of the impeller 133 and enters the volute 134, and the pressure of the gas in the volute 134 is increased by Guided discharge. After the gas between the blades is discharged, a negative pressure is formed; the air in the heat exchanger accommodation cavity 144 outside the gas collecting port 132 is continuously sucked in, thereby forming a continuous air flow.

The impeller 133 and the volute 134 of the centrifugal fan 131 are arranged in the space defined by the partition 143 and the casing 112, and the exhaust port of the volute 134 faces the side wall of the casing 110; The exhaust ports of the shells 134 meet. The volute 134 has a spiral shape, which absorbs the air thrown from the impeller 133, and converts the dynamic pressure of the airflow into static pressure through the gradually widening cross-sectional area.

The air guiding component 136 is connected between the exhaust port of the centrifugal fan 131 and the air supply cavity 125 of the air injection component 120 , and is used to guide the airflow discharged from the centrifugal fan 131 into the air supply cavity 125 . The air guide component 136 may include a flow guide section 137 and an air supply section 138 .

The air guide section 137 has an air inlet of the air guide part 136, and at least part of the air guide section 137 is helically shaped to guide the airflow direction discharged by the centrifugal fan 131 downward. The direction of the airflow is tapered, so as to increase the speed of the airflow entering the air collection chamber 139 of the air supply section 138 .

The air supply section 138 is connected with the drainage section 137, and its inside defines an air collection chamber 139 to receive the airflow discharged by the centrifugal fan 131. The air flow is supplied to the air supply chamber 125. The air supply section 138 forms a volute along the air outlet direction of the drainage section 137, which reduces the wind resistance of the airflow in the air collection chamber 139, makes it form a vortex in the air collection chamber 139, and can smoothly pass from the air collection chamber 139 to For air chamber 125.

The above-mentioned drainage section 137 can be arranged on one side of the centrifugal fan 131. Due to the space limitation of the partition plate 143, the distance between the front and back of the drainage section 137 is small, and the air supply section 138 is located below the heat exchanger housing cavity 144 (that is, the partition plate 143 and the heat exchanger 140), so the distance in the front-to-back direction is greater than the drainage section 137, and the exhaust port of the air supply section 138 is arranged on the front part of the air collection chamber 139 against the air injection part 120 side. The air inlet of the jet part 120 is arranged on the annular outer wall 122 of the arc section 129 located on one side of the air guide part 136 among the two arc sections 129 .

In the wall-mounted air conditioner indoor unit 100 of this embodiment, an air supply port 117 is provided under the housing 110 for arranging the annular air injection part 120, so that the air flow through the heat exchanger 140 is sprayed from the air injection port 124 of the air injection part 120. The ambient air around the air supply port 117 is sucked and mixed with the heat exchange airflow with a sharp temperature difference in the surrounding environment, so as to ensure that the airflow sent out is soft, and the feeling of blowing to the human body is more comfortable. On the one hand, the air supply volume of the indoor unit 100 is increased. , the flow of indoor air is accelerated, and the overall indoor temperature can be uniformly lowered, and the air outlet of the indoor unit 100 of the wall-mounted air conditioner of the present invention is strip-shaped, and is arranged below the housing 110. The overall structure is different from the existing traditional hanging air conditioner. The indoor unit of the wall-mounted air conditioner is relatively similar, and is easy to be accepted by users, and it is easy to replace the existing traditional hanging indoor unit. The installation position is flexible, and the internal components are compact in structure. thinner.

The flow direction of the heat exchange air flow of the indoor unit 100 of the wall-mounted air conditioner in this embodiment is: after the centrifugal fan 131 is started, the air around the indoor unit 100 is sucked into the heat exchanger accommodation chamber 144 from the air inlet 116, and is carried out with the heat exchanger 140. After heat exchange, it enters the centrifugal blower 131, is accelerated by the impeller 133, enters the air guiding part 136 through the volute 134, and enters the air collecting chamber 139 of the air supply section 138 after being guided by the drainage section 137 of the air guiding part 136. The airflow travels in the air collecting chamber 139 in a vortex manner and finally passes through the exhaust port of the air supply section 138 and enters the annular air supply chamber 125 from the air inlet of the air injection part 120 provided on the annular outer wall 122 of the air guide part 136 . The airflow entering the air supply chamber 125 is guided by the rear side edge 126 of the annular inner wall 121, and is sprayed forward from the air injection port 124 at high speed, driving the air in the air circulation area 118 at the rear of the air supply port 117 to be sucked through the air injection part 120 The exhaust hole 123 of the indoor unit 100 is mixed in front of the indoor unit and then sent into the room, and the air volume of the air outlet is greatly increased. At the same time, the air flow after the heat exchange is mixed with the ambient air to become a cool but not cold soft air flow, which accelerates the flow of indoor air.

Furthermore, in the wall-mounted air conditioner indoor unit 100 of this embodiment, the external air enters the heat exchanger accommodation chamber 144 where the heat exchanger 140 is located from the upper part in front, and is sent out from the lower part. Since the distance of the jet airflow is relatively long, it will not cause the air to be sent out. The backflow of the airflow, and by increasing the area of the air inlet 116 and reducing the circulation distance of the airflow in the indoor unit, ensures the smoothness of the heat exchange airflow and avoids the problem of dust falling on the upper opening.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. a kind of wall-hanging indoor unit of air conditioner, including：

Housing, the housing include case and the front panel that is set in front of the case, offered on the front panel into Air port, and offer below the air inlet air outlet of oblong；

Air ejection member is set in the air outlet, including annular inner wall and annular outer wall, wherein the annular inner wall limits Go out exhausting hole, the annular outer wall limits air feed chamber, and the annular outer wall and the ring jointly with the annular inner wall The edge that shape inner wall connects forms puff prot, and the puff prot causes institute for the air-flow of the air feed chamber to be sprayed forward The air for stating air outlet rear is drawn through the exhausting hole；

Heat exchanger is set to the enclosure interior；And

Air-supply assembly, including：Centrifugal blower and wind guide component, the centrifugal blower are arranged so that surrounding air from described Air inlet enters to exchange heat with the heat exchanger, and is arranged the air-flow after heat exchange to the air feed by the wind guide component Chamber.

2. wall-hanging indoor unit of air conditioner according to claim 1, further includes：

Partition board, the partition board are longitudinally disposed at the top of air ejection member described in the enclosure interior, the partition board and the front The heat exchanger accommodating chamber for arranging the heat exchanger is limited between plate.

3. wall-hanging indoor unit of air conditioner according to claim 2, wherein

The center of the partition board is provided with through-hole, is passed through for the collection gas port of the centrifugal blower, so that the centrifugal blower Suck the air with heat exchanger heat exchange in the heat exchanger accommodating chamber；

The impeller of the centrifugal blower is set to spiral case in the space that the partition board and the case limit, and the spiral case Exhaust outlet towards housing side wall；

The air inlet of the wind guide component connects with the exhaust outlet of the spiral case.

4. wall-hanging indoor unit of air conditioner according to claim 3, wherein the wind guide component includes：

At least part segment body of Drainage Section, the air inlet with the wind guide component, and the Drainage Section is spiral, will The airflow direction guiding of the centrifugal blower discharge is downward；

Air feed section connects with the Drainage Section, inside limit air collecting chamber, to receive the air-flow of centrifugal blower discharge, The air feed section is provided with the exhaust outlet towards the air ejection member, so that the air-flow of the air collecting chamber feeds to the air feed chamber.

5. wall-hanging indoor unit of air conditioner according to claim 4, wherein

The air inlet of the Drainage Section from the wind guide component is tapered along the airflow direction；And

The air feed section forms scroll casing shape along the air-out direction of the Drainage Section, reduces windage of the air-flow in the air collecting chamber.

6. wall-hanging indoor unit of air conditioner according to claim 5, wherein

The air feed section is located at the lower section of the heat exchanger accommodating chamber, and its distance in the front-back direction is more than the Drainage Section, The exhaust outlet of the air feed section is set to the forepart that the air collecting chamber is posted by the air ejection member side.

7. wall-hanging indoor unit of air conditioner according to claim 6, wherein

The air ejection member include two it is intersegmental every horizontal section and connection two sections of horizontal sections two sections of curved sections, In wherein described two sections of curved sections the spray is offered on the annular outer wall of the curved section of the wind guide component side The air inlet of gas component connects with the exhaust outlet of the air feed section.

8. wall-hanging indoor unit of air conditioner according to claim 1, wherein

The posterior edges of the annular inner wall are to the air feed chamber internal recess, and the annular outer wall and the annular inner wall The opposite position of posterior edges there is outside flange so that the back side edge of the annular outer wall and the annular inner wall Gap between edge forms the puff prot.

9. wall-hanging indoor unit of air conditioner according to claim 8, wherein

The annular inner wall extends to form forward continuous abducent Coanda surface from lateral edges thereafter；And

The section that the annular outer wall is located at the part on rear side of the air ejection member is spiral, so that the air feed chamber Air-flow along the annular outer wall after puff prot ejection, send out forward by the Coanda surface formed along the annular inner wall, And drive the surrounding air for extracting the air outlet rear out.

10. wall-hanging indoor unit of air conditioner according to claim 1, wherein

The lower part of the case and the front panel forms the pre-and post perforative air outlet, and the rear side of the case is formed The position of the air outlet is recessed forward so that has air circulation region at the air outlet rear.