Wall-mounted air conditioner

Abstract

The utility model discloses a wall-mounted air conditioner which comprises a main body, the main body comprises a machine shell and a base, the wall-mounted air conditioner further comprises a heat exchange fan, a public motor, a fresh air fan, an exhaust fan and a volute assembly, an exhaust duct is formed in the volute assembly, and the exhaust fan is arranged in the exhaust duct; an exhaust air outlet is formed in the lower portion of the exhaust air duct, the side wall of the exhaust air duct comprises an involute part and an equidistant part, the equidistant part is connected with the involute part, the equidistant part is located on the downstream of the involute part in the exhaust direction, and in the cross section perpendicular to the axis of the exhaust fan, the track of the involute part forms an involute relative to the exhaust fan. And the track of the equidistant part forms an equidistant line relative to the exhaust fan. Therefore, the size of the air exhaust duct can be reduced, the space in the containing cavity is utilized to the maximum degree to arrange the air exhaust fan, the size of the air exhaust fan can be increased, static pressure in the air exhaust duct can be increased, and the air exhaust efficiency of the air exhaust fan is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning field especially is related to a wall -hanging air conditioner. BACKGROUND

[0002] In the related art, some air conditioner indoor units are provided with coaxial exhaust modules, and the rotating center of the fan of the exhaust module is fixed by the cross-flow fan of the whole machine due to the coaxial influence. The space inside the air conditioner is limited, and the size of the exhaust fan needs to be reduced, which will result in low exhaust efficiency of the exhaust fan. SUMMARY

[0003] The utility model discloses a wall -hanging air conditioner, can reduce the size of the exhaust air duct, to maximize the space layout exhaust fan in the accommodation cavity, benefit increases the size of the exhaust fan, and can increase the static pressure in the exhaust air duct, so that indoor air is more easily discharged to the outdoor, improve the exhaust efficiency of the exhaust fan.

[0004] According to the wall -hanging air conditioner of the utility model embodiment, including: main body, the main body includes: the shell, the inside of the shell forms has the accommodation cavity, and the shell forms has the heat exchange air inlet and heat exchange air outlet on it;Base, be located in the accommodation cavity, and form on it have the volute tongue air duct;Heat exchange fan, set up in the volute tongue air duct;Its characterized in that, still include: public motor, set up in the accommodation cavity, and be located the length direction one end of heat exchange fan;Fresh air fan, the fresh air fan is the centrifugal fan of axial inlet and radial outlet, and the fresh air fan is located the length direction other end of heat exchange fan;Exhaust fan, the exhaust fan is the centrifugal fan of axial inlet and radial outlet, and the public motor drives heat exchange fan, exhaust fan and fresh air fan synchronous rotation under the working condition;The volute assembly, the volute assembly forms has fresh air duct and exhaust air duct in it, and the fresh air fan sets up in the fresh air duct, and the exhaust fan sets up in the exhaust air duct;Wherein, the lower part of exhaust air duct has exhaust air outlet, and the sidewall of exhaust air duct includes involute portion and equidistant portion, and the equidistant portion is connected with the involute portion, in the exhaust direction, the equidistant portion is located the downstream of the involute portion, in the cross section perpendicular to the axis of exhaust fan, the trajectory of the involute portion is formed involute line relative to the exhaust fan, and the trajectory of the equidistant portion is formed equidistant line relative to the exhaust fan.

[0005] According to the wall-mounted air conditioner, the equal-distance part is arranged downstream of the involute part, the trajectory of the equal-distance part is formed as an equal-distance line relative to the exhaust fan, the size of the exhaust air duct can be reduced, the space layout of the exhaust fan in the accommodating cavity is maximized, the size of the exhaust fan is increased, the static pressure in the exhaust air duct is increased, indoor air is more easily exhausted to the outdoor, and the exhaust efficiency of the exhaust fan is improved.

[0006] According to the wall-mounted air conditioner, in a cross section perpendicular to the exhaust fan axis, a line connecting the first end of the involute part and the center of the exhaust fan is a first line, a line connecting the second end of the involute part and the center of the exhaust fan is a second line, and the included angle between the first line and the second line ranges from 20° to 90°.

[0007] According to the wall-mounted air conditioner, the exhaust air outlet is configured as an exhaust passage, a first end of the exhaust air outlet is close to the exhaust air duct, a second end of the exhaust air outlet is away from the exhaust air duct, and the cross-sectional area of the exhaust air outlet gradually increases in the direction from the first end to the second end of the exhaust air outlet.

[0008] According to the wall-mounted air conditioner, in a cross section perpendicular to the exhaust fan axis, and in the direction from the first end to the second end of the exhaust air outlet, the width of the exhaust air outlet gradually increases.

[0009] According to the wall-mounted air conditioner, two side walls of the exhaust air outlet in the width direction are respectively a first exhaust wall and a second exhaust wall, the first exhaust wall is connected with the equal-distance part, the second exhaust wall is connected with the involute part, and the second exhaust wall extends in a direction away from the first exhaust wall in the direction from the first end to the second end of the exhaust air outlet.

[0010] According to the wall-mounted air conditioner, the included angle between the first exhaust wall and the second exhaust wall is not greater than 21°.

[0011] According to the wall-mounted air conditioner, the second exhaust wall is connected with the involute part through a transition part.

[0012] According to the wall-mounted air conditioner, the transition part is configured as a transition fillet.

[0013] According to the wall-mounted air conditioner, the radius of the transition fillet is R, R≤12mm, and R≥6mm.

[0014] According to some embodiments of the utility model, the wall -hanging air conditioner, the exhaust fan is located between the fresh air fan and the heat exchange fan.

[0015] According to some embodiments of the utility model, the wall -hanging air conditioner, the volute assembly includes: first volute half body;Exhaust volute half body, the exhaust volute half body is located the side of the first volute half body towards the common motor;Common volute, the common volute includes: fresh air volute portion, the fresh air volute portion is detachably connected with the first volute half body, and the fresh air volute portion and the first volute half body form a part of the fresh air air duct in it;Exhaust volute portion, the exhaust volute portion is detachably connected with the exhaust volute half body, and the exhaust volute portion and the exhaust volute half body form the exhaust air duct.

[0016] According to some embodiments of the utility model, the exhaust volute half body and the exhaust volute portion enclose the exhaust air inlet of the exhaust air duct, and the exhaust volute half body and the first volute half body enclose the exhaust air outlet.

[0017] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0019] Figure 1 It is the three-dimensional schematic view of the wall -hanging air conditioner according to the utility model embodiments;

[0020] Figure 2 It is the three-dimensional view of the main body of the wall -hanging air conditioner according to some embodiments;

[0021] Figure 3 It is the three-dimensional view of one direction inside the main body according to some embodiments;

[0022] Figure 4 It is the three-dimensional view of another direction inside the main body according to some embodiments;

[0023] Figure 5 It is still another three-dimensional view of another direction inside the main body according to some embodiments;

[0024] Figure 6 It is the connection schematic diagram of common motor, heat exchange fan, exhaust fan and fresh air fan;

[0025] Figure 7 It is the installation schematic diagram of exhaust fan according to some embodiments;

[0026] Figure 8 is a mounting sectional view of an exhaust fan according to some embodiments;

[0027] Figure 9 is a mounting sectional view of an exhaust fan according to some embodiments.

[0028] Reference signs:

[0029] Wall-mounted air conditioner 10000, main body 1000, cabinet 1, accommodating cavity V1,

[0030] Heat exchange air inlet 101, heat exchange air outlet 102,

[0031] Indoor heat exchanger 2, base 3, heat exchange fan 41, common motor 42,

[0032] Fresh air fan 6, exhaust fan 7, fresh air duct V01, first volute half 81,

[0033] Exhaust volute half 9, exhaust air duct V02, exhaust air inlet 901, exhaust air outlet 902, first exhaust air wall 9021, second exhaust air wall 9022, involute portion 903, equidistant portion 904, transition fillet 905,

[0034] Common volute 12, fresh air volute part 121, exhaust air volute part 122. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0037] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be directly connected, also can pass through the intermediate medium indirectly connected, can be two elements inside the communication. For ordinary skilled in the art, the above-mentioned term can be understood in the utility model specific meaning of the specific circumstances.

[0038] Next, referring to the drawings, the wall-mounted air conditioner 10000 according to the embodiments of the utility model is described.

[0039] Referring to Figures 1-9 As shown in the utility model embodiments of the wall-mounted air conditioner 10000 includes main body 1000, main body 1000 includes the shell 1, the inside of the shell 1 is formed with accommodating cavity V1, the shell 1 is formed with heat exchange air inlet 101 and heat exchange air outlet 102.The shell 1 can play the role of protection, constitutes the overall appearance structure of the wall-mounted air conditioner 10000.

[0040] Generally, the shell 1 is a long strip-shaped shell body, the length direction of the shell 1 is arranged along the horizontal direction, that is, the shell 1 is installed on the wall along the transverse direction.In actual products, in order to discharge condensate water, the shell 1 in some embodiments is installed on the wall along the transverse direction, and the angle with the horizontal plane is a small angle.

[0041] Referring to Figure 3 And Figure 4 , the main body 1000 further includes: indoor heat exchanger 2, indoor heat exchanger 2 is located in accommodating cavity V1.As described above, indoor heat exchanger 2 is a ring in the refrigerant circuit, the inside of indoor heat exchanger 2 flows through the refrigerant, for refrigeration or heating of the air flowing from the surface of indoor heat exchanger 2.In the wall-mounted air conditioner 10000, indoor heat exchanger 2 is usually arranged along the length direction of the shell 1.

[0042] For example, indoor heat exchanger 2 is a two-fold or three-fold heat exchanger, each fold of indoor heat exchanger 2 is a plate-shaped structure extending along the length direction.

[0043] Referring to Figures 3-5 , the main body 1000 further includes base 3, base 3 is located in accommodating cavity V1.Base 3 is the installation support structure inside the main body 1000, indoor heat exchanger 2 can be installed on base 3.For example, base 3 is formed with volute tongue air duct, after indoor air enters the shell 1, the flow direction is guided through the volute tongue air duct, to ensure that the resistance of indoor air flowing through indoor heat exchanger 2 is small.

[0044] Referring to Figures 4-5The wall-mounted air conditioner 10000 further comprises a heat exchange fan 41 arranged in the volute tongue air duct. When the heat exchange fan 41 rotates, the air inside the air conditioner can be heat exchanged with the indoor space.

[0045] In some embodiments, the heat exchange fan 41 is, for example, a cross-flow fan, which has low noise and large air volume, and the air outlet speed of the cross-flow fan is distributed more uniformly along the axial direction of the cross-flow fan, which is beneficial to increase the air supply distance and range. Moreover, in the case of using a cross-flow fan and arranging the cross-flow fan along the length direction of the heat exchange fan 41, the airflow driven can flow through the entire indoor heat exchanger 2, thereby ensuring the balance of heat exchange efficiency at each position of the indoor heat exchanger 2.

[0046] By arranging the heat exchange air outlet 102 and the heat exchange air inlet 101 in the casing 1, when the heat exchange fan 41 operates, the indoor air can be sucked into the casing 1 from the heat exchange air inlet 101, and after the indoor air is heat exchanged with the indoor heat exchanger 2, the heat exchanged air is sent to the indoor space from the heat exchange air outlet 102.

[0047] Therefore, the adjustment of the indoor environment temperature can be realized, the indoor heat exchanger 2 can act as an evaporator to provide a refrigeration airflow toward the indoor space from the heat exchange air outlet 102, or the indoor heat exchanger 2 can act as a condenser to provide a heating airflow toward the indoor space from the heat exchange air outlet 102.

[0048] In some embodiments, in the height direction of the main body 1000, the heat exchange air inlet 101 is located above the heat exchange air outlet 102, so that the air can be inhaled from the top, and the heat exchange air can be blown out from the bottom.

[0049] For example, the height direction of the main body 1000 is the up-down direction.

[0050] It can be understood that the main body 1000 is usually installed on the wall, and in order to avoid interfering with people's daily life, the main body 1000 is usually hung at a high position. By arranging the main body 1000 to blow out the heat exchange air from the bottom, the blown heat exchange air is not easily blocked by the roof and the ground, so that the heat exchange air has small resistance consumption during the blowing process, and the air supply range is wide, so that the heat exchange air can flow to the entire indoor space as soon as possible, thereby improving the heat exchange efficiency.

[0051] Referring to Figure 1 and Figure 2 , the heat exchange air inlet 101 is located above the heat exchange air outlet 102, and the heat exchange air inlet 101 can inhale air from the top, so that air is not inhaled from the heat exchange air outlet 102, and the heat exchange air blown out from the heat exchange air outlet 102 is not directly sucked into the heat exchange air inlet 101, thereby reducing the heat exchange air idling without participating in the indoor heat exchange process.

[0052] In some embodiments, the heat exchange air inlet 101 is located at the top of the casing 1, i.e. in a region that is not visible to the user, thereby hiding the heat exchange air inlet 101 and improving the appearance of the wall-mounted air conditioner 10000.

[0053] In some embodiments, the heat exchange air outlet 102 is located at the front of the casing 1, i.e. the heat exchange air outlet 102 blows air to the front side of the main body 1000.

[0054] It will be appreciated that the side of the main body 1000 that is connected to the wall is generally referred to as the back or rear side, and the side opposite the rear side is generally referred to as the front side. Therefore, when the heat exchange air outlet 102 is located at the front of the casing 1, the air blown by the heat exchange air outlet 102 is away from the wall, and the air blowing resistance is small, and the air blowing range is wide.

[0055] In some embodiments, the heat exchange air outlet 102 is located at the front side of the casing 1 and close to the bottom, for example, the heat exchange air outlet 102 is located at the lower front corner of the casing 1. In this case, the heat exchange air blown by the heat exchange air outlet 102 flows forward and downward at the same time, so that the heat exchange air can sink and fall on a person or object on the ground after being blown to a certain distance, so that the person or object on the ground can be in the suitable indoor environment as soon as possible.

[0056] With reference to Figures 4-6 , the wall-mounted air conditioner 10000 further comprises a common motor 42, which is arranged in the accommodating cavity V1 and located at one end of the heat exchange fan 41 in the length direction. In this way, the installation and maintenance of the common motor 42 are facilitated, and the overall height and thickness of the main body 1000 do not need to be increased due to the arrangement of the common motor 42. Here, the height direction of the main body 1000 is consistent with the up-down direction, and the thickness direction of the main body 1000 is consistent with the front-rear direction.

[0057] In some embodiments, the wall-mounted air conditioner 10000 can comprise a motor support, which can be fixed on the base 3 and used to fix the common motor 42, so that the common motor 42 can be firmly installed on the main body 1000.

[0058] It will be appreciated that the wall-mounted air conditioner 10000 is generally in a long strip shape, and the length direction of the heat exchange fan 41 is the same as the length direction of the main body 1000, which is the left-right direction shown in Figures 1-3 .

[0059] With reference to Figures 5-6 , the wall-mounted air conditioner 10000 further comprises a fresh air fan 6, which is an axial-inlet and radial-outlet centrifugal fan, and the fresh air fan 6 is located at the other end of the heat exchange fan 41 in the length direction, i.e. the fresh air fan 6 is located on the side of the heat exchange fan 41 away from the common motor 42.

[0060] With reference toFigures 5-6 The wall-mounted air conditioner 10000 further comprises an exhaust fan 7, which is an axial-inlet and radial-outlet centrifugal fan.

[0061] The common motor 42 can drive the heat exchange fan 41, the exhaust fan 7 and the fresh air fan 6 to rotate synchronously in the working state.

[0062] The centrifugal fan itself has the characteristics of compact structure, large air volume and low noise, and the fan noise is significantly reduced when the rotating speed is reduced. Therefore, the fresh air fan 6 and the exhaust fan 7 can meet the demand of large air volume by selecting a centrifugal fan with a smaller size. The centrifugal fan has small vibration noise and is not easy to resonate with the indoor heat exchanger 2, which is conducive to reducing the vibration and noise of the whole wall-mounted air conditioner 10000.

[0063] The fresh air fan 6 and the exhaust fan 7 both adopt centrifugal fans, and the air directions of the fresh air fan 6 and the exhaust fan 7 can be reasonably arranged. For example, the fresh air fan 6 is an axial-inlet and radial-outlet centrifugal fan, and the exhaust fan 7 is an axial-inlet and radial-outlet centrifugal fan. The fresh air fan 6 and the exhaust fan 7 both take in air from two ends far away from each other, and then the fresh air and the exhaust air are both driven to be discharged radially. The flow paths of the fresh air and the exhaust air do not need to overlap in the axial direction, and the paths do not need to intersect. This helps to reduce the design of the avoidance corner of the fresh air and exhaust air paths, reduce the air resistance and energy consumption, ensure the air volume, and reduce the noise.

[0064] In some embodiments, the fresh air fan 6 and the exhaust fan 7 both adopt centrifugal fans, and the heat exchange fan 41, the exhaust fan 7 and the fresh air fan 6 are all driven by the same motor. Not only the number of motors is saved, the overall size is reduced, and the cost is saved, but also the three fans are arranged in a stacked manner along the axial direction of the common motor 42.

[0065] In some embodiments, the centrifugal fan itself is relatively flat in the axial direction, and the fresh air fan 6 and the exhaust fan 7 are stacked in this way to reduce the overall axial size occupied, so that the length of the main body 1000 does not need to be too long. Since the heat exchange fan 41, the exhaust fan 7 and the fresh air fan 6 are all driven by the same motor, the three fans rotate synchronously and in step with each other, and the fresh air fan 6 and the exhaust fan 7 do not need to be separated by a large gap. The axial distance between the fresh air fan 6 and the exhaust fan 7 can be arranged relatively close.

[0066] The common motor 42, the heat exchange fan 41, the exhaust fan 7 and the fresh air fan 6 are arranged in the length direction of the main body 1000, rather than in the thickness or height direction of the main body 1000, so that the main body 1000 of the wall-mounted air conditioner 10000 has a slender appearance and is thin and light.

[0067] In some embodiments, the common motor 42 can be an external rotor motor or an internal rotor motor.

[0068] Referring to Figures 7-8 The wall-mounted air conditioner 10000 further comprises a volute assembly in which a fresh air duct V01 and an exhaust air duct V02 are formed, and the volute assembly is formed with a fresh air inlet, a fresh air outlet, an exhaust air inlet 901 and an exhaust air outlet 902, the fresh air inlet and the fresh air outlet are both in communication with the fresh air duct V01, and the exhaust air inlet 901 and the exhaust air outlet 902 are both in communication with the exhaust air duct V02.

[0069] The fresh air fan 6 is arranged in the fresh air duct V01, and rotation of the fresh air fan 6 can cause outdoor air to enter the fresh air duct V01 from the fresh air inlet and to enter the indoor environment from the fresh air outlet. The fresh air fan 6 is used to drive air flow to be sucked in from the fresh air inlet and to be discharged to the indoor environment through the fresh air outlet. The operation of the fresh air fan 6 provides the driving force for the flow of fresh air.

[0070] Thus, by arranging the fresh air duct V01 in cooperation with the fresh air fan 6, when the air in the indoor environment is relatively dirty or the air quality is poor, the relatively fresh outdoor air can be driven by the fresh air fan 6 to enter the indoor environment, so as to improve the air flow environment in the indoor environment.

[0071] In some embodiments, the number of fresh air outlets can be one.

[0072] In some embodiments, the number of fresh air outlets can be multiple, for example, two, three, four or more. By arranging multiple fresh air outlets, the air discharge amount can be increased.

[0073] In some embodiments, the number of fresh air outlets is multiple, and the multiple fresh air outlets are arranged in the same direction.

[0074] In some embodiments, the number of fresh air outlets is multiple, and the multiple fresh air outlets are arranged in different directions.

[0075] The exhaust air fan 7 is arranged in the exhaust air duct V02, and rotation of the exhaust air fan 7 can cause indoor air to enter the exhaust air duct V02 from the exhaust air inlet 901 and to be discharged to the outdoor environment from the exhaust air outlet 902. The exhaust air fan 7 is used to drive air flow to be sucked in from the exhaust air inlet 901 and to be discharged to the indoor environment through the exhaust air outlet 902. The operation of the exhaust air fan 7 provides the driving force for the flow of dirty air.

[0076] Thus, by arranging the exhaust air duct V02 in cooperation with the exhaust air fan 7, when the air in the indoor environment is relatively dirty or the air quality is poor, the dirty air flow in the indoor space can be sucked away and discharged by the exhaust air fan 7. After the amount of indoor air is reduced, fresh air can be sucked in from the outdoor environment or from other rooms through doors and windows, so as to reduce the degree of dirtiness of the indoor air. Thus, by arranging the exhaust air duct V02 in cooperation with the exhaust air fan 7, when the air in the indoor environment is relatively dirty or the air quality is poor, the dirty air flow in the indoor space can be sucked away and discharged by the exhaust air fan 7. After the amount of indoor air is reduced, fresh air can be sucked in from the outdoor environment or from other rooms through doors and windows, so as to reduce the degree of dirtiness of the indoor air.

[0077] The fresh air fan 6, the exhaust fan 7 and the volute assembly constitute a bidirectional ventilation assembly arranged in the main body 1000. The bidirectional ventilation assembly can provide fresh air for the indoor space and can exhaust indoor air to the outdoor space.

[0078] It should be noted that in the wall-mounted air conditioner 10000, the operation mode of the bidirectional ventilation assembly can be set according to actual use requirements.

[0079] In some embodiments, the bidirectional ventilation assembly can simultaneously operate in the fresh air mode and the exhaust air mode, that is, the fresh air air duct V01 and the exhaust air air duct V02 can be simultaneously opened, and at the same time that the indoor dirty air flows to the outdoor space, fresh air from the outdoor space can also enter the indoor space, so that the indoor space air flow improvement efficiency is increased through the in-out air flow driving assembly, thereby timely meeting the user's demand when the user urgently needs to exhaust or update the indoor air.

[0080] Moreover, since indoor air is exhausted to the outdoor space while fresh outdoor air is supplemented to the indoor space, the amount of indoor air is kept sufficient, and the indoor air is more easily sucked. For example, if there is a leakage of irritating gas (such as gas released by home decoration materials), coal gas or other gas in the indoor space, the bidirectional ventilation assembly can be set to simultaneously operate in the fresh air mode and the exhaust air mode to achieve rapid ventilation. Compared with the conventional fresh air structure that simply introduces fresh air, the bidirectional ventilation assembly in some embodiments has a larger purification flow per unit time, a higher ventilation efficiency and a better purification effect.

[0081] Moreover, when ventilation is performed, the indoor temperature is not changed sharply as when the window is directly opened, and the indoor personnel are not caused to feel uncomfortable due to a sharp temperature rise or drop. Moreover, the main body 1000 is located at a higher position, and the ventilation position does not cause discomfort due to being too close to the people.

[0082] In some embodiments, the bidirectional ventilation assembly can be set to operate in the fresh air mode or the exhaust air mode by means of a valve, that is, when the bidirectional ventilation assembly is started in the fresh air mode, the exhaust air mode is stopped, and at this time, only the fresh air air duct V01 is ventilated, and the exhaust air air duct V02 is not ventilated. Or when the bidirectional ventilation assembly is started in the exhaust air mode, the fresh air mode is stopped, and at this time, the fresh air air duct V01 is not ventilated, and the exhaust air air duct V02 is ventilated.

[0083] It can be understood that when the wall-mounted air conditioner 10000 is in a cooling state, the bidirectional ventilation assembly sucks fresh air from the outdoor space to the indoor space, and the cold energy generated by the wall-mounted air conditioner 10000 can still remain in the indoor space, and the loss of cold energy is small. The indoor air is exhausted to the outdoor space through the exhaust air air duct V02, and by setting the exhaust air volume to be less than the fresh air volume, the loss of cold energy can be reduced.

[0084] The bidirectional ventilation component is located at one end of the length of the heat exchange fan 41. Compared to the main body 1000 without the bidirectional ventilation component, it only increases the lateral length. The height and thickness of the main body 1000 can remain largely unchanged or with minimal variation, making the main body 1000 slim and lightweight. When mounted on the wall, it will not obtrusively affect the indoor space layout, and its excessive weight will not make it difficult to secure the wall-mounted air conditioner 10000, reducing the risk of it falling off the wall. The wall-mounted air conditioner 10000 remains a slim and lightweight model overall, making it aesthetically pleasing when mounted on the wall, and its weight is controllable.

[0085] Among them, reference Figures 7-9 As shown, the lower part of the exhaust duct V02 has an exhaust outlet 902, which is open downwards and used to exhaust indoor air from the lower part of the main body 1000 to the outside. The side wall of the exhaust duct V02 includes an involute portion 903 and an equidistant portion 904, which are connected to the involute portion 903. In the exhaust direction, the equidistant portion 904 is located downstream of the involute portion 903. When indoor air flows into the exhaust duct V02, the indoor air can flow along the involute portion 903 and the equidistant portion 904, and then be exhausted to the outside through the exhaust outlet 902.

[0086] In a cross-section perpendicular to the axis of the exhaust fan 7, the trajectory of the involute portion 903 is formed as an involute relative to the exhaust fan 7, and the trajectory of the equidistant portion 904 is formed as an equidistant line relative to the exhaust fan 7.

[0087] Understandably, the gradually opening portion 903 is positioned close to the exhaust outlet 902. The gradually opening portion 903 is used to partially tighten the distance between the sidewall of the exhaust duct V02 and the exhaust fan 7, thereby directing as much indoor air as possible into the exhaust outlet 902 as possible. The equidistant portion 904 can be used to tighten the exhaust duct V02, increasing the static pressure within it, thus making it easier for indoor air to be exhausted outdoors and improving the exhaust efficiency of the exhaust fan 7. Furthermore, the equidistant portion 904 can reduce the overall size of the exhaust duct V02, maximizing the use of space within the accommodating cavity V1 to arrange the exhaust fan 7, which facilitates increasing the size of the exhaust fan 7 and improving exhaust efficiency.

[0088] According to the wall-mounted air conditioner 10000 of this utility model embodiment, by providing an equidistant portion 904 downstream of the gradually opening portion 903, and making the trajectory of the equidistant portion 904 form an equidistant line relative to the exhaust fan 7, the size of the exhaust duct V02 can be reduced, so as to maximize the use of the space in the accommodating cavity V1 to arrange the exhaust fan 7, which is conducive to increasing the size of the exhaust fan 7 and can increase the static pressure in the exhaust duct V02, so that the indoor air can be more easily discharged to the outside, thereby improving the exhaust efficiency of the exhaust fan 7.

[0089] In some embodiments of this utility model, in a cross section perpendicular to the axis of the exhaust fan 7, the first end of the involute portion 903 and the center of the exhaust fan 7 are connected by a first line, and the second end of the involute portion 903 and the center of the exhaust fan 7 are connected by a second line. The angle between the first line and the second line is in the range of 20°-90°.

[0090] For example, refer to Figure 9 As shown, the involute portion 903 has a first end and a second end. In a cross-section perpendicular to the axis of the exhaust fan 7, the trajectory of the involute portion 903 forms an involute line from the first end to the second end. The first end of the involute portion 903 is connected to the exhaust outlet 902, and the second end of the involute portion 903 is connected to the equidistant portion 904.

[0091] In the cross-section perpendicular to the axis of the exhaust fan 7, the line connecting the first end of the involute portion 903 to the center of the exhaust fan 7 is designated as the first line, and the line connecting the second end of the involute portion 903 to the center of the exhaust fan 7 is designated as the second line. The angle between the first and second lines is α1, satisfying: 20°≤α1≤90°. That is, the angle between the first and second lines can be set to be greater than or equal to 20° and less than or equal to 90°, such as 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, etc.

[0092] With the above settings, the gradually opening portion 903 can fully tighten the distance between the side wall of the exhaust duct V02 and the exhaust fan 7, which helps to ensure the air output efficiency of the exhaust fan 7 and can reduce the overall size of the volute assembly, thus facilitating the miniaturization design of the wall-mounted air conditioner 10000.

[0093] In some embodiments of this utility model, such as Figure 9 As shown, the exhaust outlet 902 can be constructed as an exhaust duct. The first end of the exhaust outlet 902 is close to and connected to the exhaust duct V02, while the second end is away from the exhaust duct V02 and connected to the outside. The cross-sectional area of ​​the exhaust outlet 902 gradually increases in the direction extending from the first end to the second end. Thus, when indoor air flows from the first end to the second end of the exhaust outlet 902, the indoor air pressure gradually decreases, creating a pressure difference between the first and second ends of the exhaust outlet 902. This makes it easier for indoor air in the exhaust duct V02 to be exhausted to the outside, improving the exhaust efficiency of the exhaust duct V02.

[0094] In some embodiments of this utility model, such as Figure 9As shown in the drawings, in a cross section perpendicular to the axis of the exhaust fan 7, and in the direction extending from the first end to the second end of the exhaust air outlet 902, the width of the exhaust air outlet 902 gradually increases, so that the cross-sectional area of the exhaust air outlet 902 gradually increases. Through the above arrangement, the space can be fully utilized, which is beneficial to realize the miniaturization design of the wall-mounted air conditioner 10000.

[0095] In some embodiments of the present application, as shown in the drawings, Figure 9 As shown in the drawings, the two side walls of the exhaust air outlet 902 in the width direction can be respectively provided as a first exhaust wall 9021 and a second exhaust wall 9022, the first exhaust wall 9021 is connected with the equidistant portion 904, and the second exhaust wall 9022 is connected with the involute portion 903. In the direction extending from the first end to the second end of the exhaust air outlet 902, the second exhaust wall 9022 extends in a direction away from the first exhaust wall 9021.

[0096] Through the above arrangement, the extension direction of the exhaust air outlet 902 can be consistent with the flow direction of the airflow, which is beneficial to reduce the wind resistance and improve the exhaust efficiency of the exhaust fan 7.

[0097] In some embodiments of the present application, as shown in the drawings, Figure 9 As shown in the drawings, the included angle between the first exhaust wall 9021 and the second exhaust wall 9022 can be α2, which satisfies: α≤21°, for example, the included angle α between the first exhaust wall 9021 and the second exhaust wall 9022 can be 5°, 10°, 15°, 21°, etc. Therefore, the size of the exhaust air outlet 902 can be prevented from being too large to affect the arrangement of the volute assembly, and the design rationality of the wall-mounted air conditioner 10000 is improved.

[0098] In some embodiments of the present application, as shown in the drawings, Figure 9 As shown in the drawings, the second exhaust wall 9022 and the involute portion 903 can be connected through a transition portion. Therefore, the stress concentration of the volute assembly can be reduced, the structural stability of the volute assembly is improved, the airflow in the exhaust air duct V02 can be more stable, the noise can be reduced, and the exhaust efficiency of the exhaust fan 7 is improved.

[0099] In some embodiments of the present application, as shown in the drawings, Figure 9 As shown in the drawings, the transition portion can be configured as a transition round corner 905. Therefore, the forming difficulty of the volute assembly can be reduced, the processing difficulty can be reduced, the stability of the airflow in the exhaust air duct V02 can be ensured, the noise can be reduced, and the exhaust efficiency of the exhaust fan 7 is improved.

[0100] In some embodiments of the present application, as shown in the drawings, Figure 9As shown, the radius of the transition fillet 905 can be set as R, R≤12mm, R≥6mm. That is, the radius R of the transition fillet 905 can be set as greater than or equal to 6mm and less than or equal to 12mm, such as 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, etc. In this way, the forming difficulty of the transition fillet 905 can be reduced, and the design rationality of the volute assembly is improved.

[0101] In some embodiments, referring to Figures 5-6 As shown, the exhaust fan 7 is located between the fresh air fan 6 and the heat exchange fan 41. In other words, the exhaust fan 7 is closer to the heat exchange fan 41 than the fresh air fan 6. When the wall-mounted air conditioner 10000 is in cooling or heating, the heat exchange fan 41 is operated to drive the indoor air entering the casing 1 from the heat exchange air inlet 101 to flow through the indoor heat exchanger 2. The exhaust fan 7 is close to the heat exchange fan 41, the air inlet end of the exhaust fan 7 is close to the air inlet end of the heat exchange fan 41, and the exhaust fan 7 can suck air from the air inlet end of the heat exchange fan 41, that is, when the exhaust fan 7 rotates, it can suck the indoor air entering the casing 1 from the heat exchange air inlet 101 to the exhaust fan 7, so that it is not necessary to additionally open a hole in the casing 1 to independently introduce air to the exhaust fan 7, thereby reducing the number of openings in the casing 1, simplifying the machining and manufacturing process of the casing 1, and increasing the aesthetic degree. In addition, the heat exchange air inlet 101 is generally set to be large, so the amount of indoor air sucked into the casing 1 through the heat exchange air inlet 101 is large, so the air amount reaching the exhaust fan 7 is also large, and the exhaust efficiency is accelerated.

[0102] In addition, in some embodiments, the fresh air fan 6 is arranged on the side of the exhaust fan 7 away from the indoor heat exchanger 2. When there is condensate water on one side of the indoor heat exchanger 2, the condensate water is not easy to reach the fresh air fan 6, reducing the risk of water accumulation and bacterial growth at the fresh air fan 6.

[0103] In some embodiments of the present application, referring to Figures 7-9 As shown, the volute assembly includes a first volute half 81 and an exhaust volute half 9, and the exhaust volute half 9 is located on the side of the first volute half 81 facing the common motor 42. The exhaust volute half 9 is detachably connected with the first volute half 81.

[0104] The volute assembly further includes a common volute 12, and the common volute 12 includes: a fresh air volute portion 121, which is detachably connected with the first volute half 81 and forms a part of the fresh air air duct V01 in the first volute half 81.

[0105] The common volute 12 includes: an exhaust volute portion 122, which is detachably connected with the exhaust volute half 9 and forms an exhaust air duct V02 in the exhaust volute half 9.

[0106] In some embodiments, referring to Figures 7-9 As shown, the fresh air volute part 121 and the exhaust air volute part 122 can be an integral piece, which can reduce the number of volutes and thus reduce the assembly process of the volute assembly. When installing the bidirectional air exchange assembly on the main body 1000, the common motor 42, the heat exchange fan 41, the exhaust air fan 7 and the fresh air fan 6 can be assembled into a motor fan assembly first, then the first volute half 81 and the exhaust air volute half 9 are installed on the base 3, then the motor fan assembly is installed on the main body 1000, so that the fresh air fan 6 is located in the first volute half 81 and the exhaust air fan 7 is located in the exhaust air volute half 9, and finally the common volute 12 is arranged above the exhaust air fan 7 and the fresh air fan 6, the fresh air volute part 121 is fixedly connected with the first volute half 81 by fasteners, and the exhaust air volute part 122 is fixedly connected with the exhaust air volute half 9 by fasteners.

[0107] In some embodiments, the fresh air volute part 121 and the exhaust air volute part 122 can be separate pieces. When installing the bidirectional air exchange assembly on the main body 1000, the common motor 42, the heat exchange fan 41, the exhaust air fan 7 and the fresh air fan 6 can be assembled into a motor fan assembly first, then the first volute half 81 and the exhaust air volute half 9 are installed on the base 3, then the motor fan assembly is installed on the main body 1000, so that the fresh air fan 6 is located in the first volute half 81 and the exhaust air fan 7 is located in the exhaust air volute half 9, and finally the fresh air volute part 121 is fixedly connected with the first volute half 81 by fasteners, and the exhaust air volute part 122 is fixedly connected with the exhaust air volute half 9 by fasteners, so that the fresh air volute part 121 is arranged above the fresh air fan 6 and the exhaust air volute part 122 is arranged above the exhaust air fan 7.

[0108] Optionally, the fasteners can be bolts, screws or the like, which can firmly connect two parts.

[0109] Optionally, the fresh air volute part 121 and the first volute half 81 can also be connected and fixed by a buckle structure, and the exhaust air volute part 122 and the exhaust air volute half 9 can also be connected and fixed by a buckle structure.

[0110] The fresh air volute part 121 and the first volute half 81 form part of the fresh air volute. In some embodiments of the present application, the exhaust air volute half 9 and the exhaust air volute part 122 form the exhaust air volute, and the exhaust air volute half 9 and the exhaust air volute part 122 enclose the exhaust air inlet 901, and the exhaust air volute half 9 and the first volute half 81 enclose the exhaust air outlet 902.

[0111] In some embodiments, as Figures 7-9As shown, a part of the exhaust air inlet 901 is formed on the exhaust air volute half 9, another part is formed on the exhaust air volute part 122, and the axial direction of the exhaust air inlet 901 is arranged along the length direction of the heat exchange fan 41. That is, the exhaust air inlet 901 is opposite to the axial air inlet end of the exhaust air fan 7, so that the air resistance of the exhaust air fan 7 is small when the exhaust air inlet 901 is inhaled, which is beneficial to ensure the exhaust air inlet amount. When the exhaust air inlet is easy, a smaller size of the exhaust air fan 7 can be selected, and the size of the bidirectional air exchange assembly is further reduced.

[0112] The axial direction of the exhaust air inlet 901 is towards the indoor heat exchanger 2, that is, the air inlet area of the exhaust air inlet 901 is towards the indoor heat exchanger 2. In this way, the exhaust air inlet 901 is close to the heat exchange air inlet 101, the air inlet amount at the heat exchange air inlet 101 is large, and part of the air entering the casing 1 from the heat exchange air inlet 101 can enter the exhaust air duct V02 through the exhaust air inlet 901, so that the air amount at the exhaust air inlet 901 is sufficient.

[0113] The exhaust air fan 7 and the fresh air fan 6 are on the same side of the heat exchange fan 41. The exhaust air fan 7 is arranged in the exhaust air duct V02 formed by the exhaust air volute, and the fresh air fan 6 is arranged in the fresh air duct V01 formed by the fresh air volute. The volute side walls at the adjacent positions of the exhaust air fan 7 and the fresh air fan 6 can simultaneously serve as the volute side walls of the exhaust air fan 7 and the fresh air fan 6. For example, the plates of the fresh air volute part 121 and the first volute half 81 in the vertical direction can serve as the volute side walls shared by the exhaust air fan 7 and the fresh air fan 6. In this way, one part can be saved, and the overall performance is better.

[0114] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0115] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner (10000), comprising: a main body (1000) comprising: a casing (1) having an accommodating cavity (V1) formed inside, and a heat exchange air inlet (101) and a heat exchange air outlet (102) formed on the casing (1); a base (3) provided in the accommodating cavity (V1) and having a volute tongue air duct formed thereon; a heat exchange fan (41) provided in the volute tongue air duct; characterized in that further comprising: a common motor (42) provided in the accommodating cavity (V1) and located at one end of the heat exchange fan (41) in a length direction of the heat exchange fan (41); a fresh air fan (6) which is an axial-inlet and radial-outlet centrifugal fan, and is located at the other end of the heat exchange fan (41) in the length direction of the heat exchange fan (41); an exhaust air fan (7) which is an axial-inlet and radial-outlet centrifugal fan, and is driven by the common motor (42) to rotate synchronously with the heat exchange fan (41) and the exhaust air fan (7) in a working state; a volute assembly having a fresh air duct (V01) and an exhaust air duct (V02) formed therein, the fresh air fan (6) being provided in the fresh air duct (V01), and the exhaust air fan (7) being provided in the exhaust air duct (V02); wherein the lower part of the exhaust air duct (V02) has an exhaust air outlet (902), the sidewall of the exhaust air duct (V02) comprises a involute portion (903) and an equidistant portion (904), the equidistant portion (904) is connected with the involute portion (903), the equidistant portion (904) is located downstream of the involute portion (903) in an exhaust air direction, in a cross section perpendicular to the axis of the exhaust air fan (7), the trace of the involute portion (903) forms an involute line relative to the exhaust air fan (7), and the trace of the equidistant portion (904) forms an equidistant line relative to the exhaust air fan (7).

2. The wall-mounted air conditioner (10000) according to claim 1, characterized in that, In the cross section perpendicular to the axis of the exhaust air fan (7), the line connecting the first end of the involute portion (903) with the center of the exhaust air fan (7) is a first line, the line connecting the second end of the involute portion (903) with the center of the exhaust air fan (7) is a second line, and the included angle between the first line and the second line ranges from 20° to 90°. 3.The wall-mounted air conditioner (10000) according to claim 1, characterized in that, The exhaust air outlet (902) is configured as an exhaust air passage, the first end of the exhaust air outlet (902) is close to the exhaust air duct (V02), the second end of the exhaust air outlet (902) is away from the exhaust air duct (V02), and the cross-sectional area of the exhaust air outlet (902) gradually increases in the direction from the first end to the second end of the exhaust air outlet (902). 4.The wall-mounted air conditioner (10000) according to claim 3, characterized in that, In the cross section perpendicular to the axis of the exhaust air fan (7), and in the direction from the first end to the second end of the exhaust air outlet (902), the width of the exhaust air outlet (902) gradually increases. 5.The wall-mounted air conditioner (10000) according to claim 4, characterized in that, The two side walls of the exhaust air outlet (902) along the width direction are respectively a first exhaust air wall (9021) and a second exhaust air wall (9022), the first exhaust air wall (9021) is connected with the equidistant part (904), the second exhaust air wall (9022) is connected with the involute part (903), and in the direction in which the first end of the exhaust air outlet (902) extends to the second end, the second exhaust air wall (9022) extends in a direction away from the first exhaust air wall (9021). 6.The wall-mounted air conditioner (10000) according to claim 5, characterized in that, The included angle between the first exhaust air wall (9021) and the second exhaust air wall (9022) is not greater than 21°. 7.The wall-mounted air conditioner (10000) according to claim 5, characterized in that, The second exhaust air wall (9022) is connected with the involute part (903) through a transition part. 8.The wall-mounted air conditioner (10000) according to claim 7, characterized in that, The transition part is configured as a transition round corner (905). 9.The wall-mounted air conditioner (10000) according to claim 8, characterized in that, The radius of the transition round corner (905) is R, R≤12mm, R≥6mm. 10.The wall-mounted air conditioner (10000) according to claim 1, wherein, The exhaust air fan (7) is located between the fresh air fan (6) and the heat exchange fan (41). 11.The wall-mounted air conditioner (10000) according to any one of claims 1-10, characterized in that, The volute assembly comprises: a first volute half (81); an exhaust air volute half (9) located on the side of the first volute half (81) facing the common motor (42); a common volute (12) comprising: a fresh air volute part (121) detachably connected with the first volute half (81), the fresh air volute part (121) and the first volute half (81) form a part of the fresh air air duct (V01) inside; an exhaust air volute part (122) detachably connected with the exhaust air volute half (9), the exhaust air volute part (122) and the exhaust air volute half (9) form the exhaust air air duct (V02) inside. 12.The wall-mounted air conditioner (10000) according to claim 11, characterized in that, The exhaust air volute half (9) and the exhaust air volute part (122) enclose an exhaust air inlet (901) of the exhaust air air duct (V02), and the exhaust air volute half (9) and the first volute half (81) enclose the exhaust air outlet (902).

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