Indoor unit of air conditioner

Abstract

The utility model relates to an indoor unit of an air conditioner, which belongs to the technical field of air conditioning equipment and comprises a shell, an indoor heat exchanger, a base, a reflecting part and an ultraviolet light source. The shell is provided with an indoor air inlet, the indoor heat exchanger is arranged in the shell, the base is arranged between the indoor air inlet and the indoor heat exchanger, the light reflecting part is arranged on the base and provided with a light reflecting groove, and the groove face of the light reflecting groove comprises a first arc face and a second arc face, and the first cambered surface and the second cambered surface are connected in opposite bending directions. The ultraviolet light source is arranged at the joint of the first cambered surface and the second cambered surface in the reflective groove, and light rays emitted by the ultraviolet light source back to the opening of the reflective groove can be reflected to the outlet direction of the reflective groove through the arcs of the two cambered surfaces, so that the light rays back to the ultraviolet light source can be utilized, and the sterilization efficiency of the ultraviolet light source is further improved; and the problem of light leakage caused by shielding can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, and in particular to an air conditioner indoor unit. BACKGROUND

[0002] Air conditioner refers to the air conditioner, which is a device for artificially adjusting and controlling the temperature, humidity, flow rate and other parameters of the air in the environment of a building or structure. With the development of modern life, people's quality of life is getting higher and higher, and people pay more and more attention to indoor air quality. The air conditioner indoor unit, as the main equipment for indoor air circulation, directly affects the quality of indoor air.

[0003] At present, ultraviolet rays are commonly used in air conditioners to sterilize and disinfect the airflow entering the air conditioner indoor unit. The ultraviolet light source is usually arranged between the air inlet of the air conditioner indoor unit and the indoor heat exchanger. The indoor air circulation is caused by the operation of the air conditioner, and the indoor air circulation enters the air conditioner indoor unit from the indoor air inlet. The ultraviolet light generated by the ultraviolet light source irradiates the microorganisms in the airflow, so that the microorganisms reach the irradiation dose limit value of inactivation. The light illumination type sterilization and purification module of the air conditioner ultraviolet lamp needs to improve the efficiency and not to affect the user experience due to light leakage. The efficiency is improved without increasing the power, which is realized by more efficient use of the light of the ultraviolet light source, and more light can be used by reducing the shielding of the light source, but it will cause a large amount of light leakage, which will affect the normal life of the user. UTILITY MODEL CONTENT

[0004] The utility model at least solves one of the technical problems in the related art to some extent.

[0005] Therefore, the present application aims to provide an air conditioner indoor unit, which sets a reflecting piece around the ultraviolet light source for sterilization. The reflecting piece can reflect the ultraviolet light scattered by the ultraviolet light source, so that the light of the ultraviolet light source is concentrated and irradiates the air entering the air conditioner indoor unit, thereby improving the utilization rate of the ultraviolet light. Moreover, the shape of the reflecting groove surface of the reflecting groove is set as two oppositely connected arc surfaces, and the ultraviolet light source is arranged at the connecting position. The arc shape of the second curve segment and the third curve segment of the two arc surfaces can reflect the light emitted by the ultraviolet light source away from the opening of the reflecting groove to the outlet direction of the reflecting groove, so that the light away from the ultraviolet light source can be utilized, the sterilization efficiency of the ultraviolet light source is further improved, and the problem of light leakage caused by reduced shielding can be avoided.

[0006] To achieve the above-mentioned purpose, the utility model provides an air conditioner indoor unit, which comprises:

[0007] A shell is provided with an indoor air inlet on one side;

[0008] An indoor heat exchanger is arranged inside the shell;

[0009] An ultraviolet sterilization module is arranged in the shell and comprises:

[0010] A base is arranged between the indoor air inlet and the indoor heat exchanger;

[0011] A light-reflecting member is arranged on the base, the light-reflecting member is provided with a light-reflecting groove on a side facing the indoor air inlet and the indoor heat exchanger, the opening of the light-reflecting groove faces between the indoor air inlet and the indoor heat exchanger, and the groove surface of the light-reflecting groove comprises a first arc surface and a second arc surface;

[0012] The first arc surface comprises a first curved section and a second curved section, the curvature of the first curved section is smaller than that of the second curved section, and the first curved section is curved towards the side of the indoor air inlet;

[0013] The second arc surface comprises a third curved section and a fourth curved section, the curvature of the third curved section is greater than that of the fourth curved section, and the fourth curved section is curved towards the side of the indoor heat exchanger;

[0014] The bending directions of the second curved section and the third curved section are the same and face one end of the shell, and the first curved section, the second curved section, the third curved section and the fourth curved section are sequentially connected;

[0015] An ultraviolet light source is arranged at the connection between the first and second curved sections and the third curved section in the light-reflecting groove and is used for irradiating the airflow entering from the indoor air inlet.

[0016] In the technical scheme, the light-reflecting member is arranged on the side of the ultraviolet light source for sterilization, the light-reflecting member can reflect the ultraviolet light dispersedly irradiated by the ultraviolet light source, the light rays of the ultraviolet light source are concentrated towards the air entering the indoor unit of the air conditioner, and thus the utilization rate of the ultraviolet light rays is improved. Moreover, the shape of the light-reflecting groove surface is arranged as two oppositely connected arc surfaces, the ultraviolet light source is arranged at the connection, the light rays emitted by the ultraviolet light source in the opposite direction are reflected to the outlet direction of the light-reflecting groove through the arc shapes of the second curved section and the third curved section of the two arc surfaces, the light rays in the opposite direction of the ultraviolet light source can be utilized, the sterilization efficiency of the ultraviolet light source is further improved, and the light leakage problem caused by the shielding can be avoided.

[0017] In some embodiments of the present application, the first arc surface and the second arc surface are symmetrical arc surfaces.

[0018] In the technical scheme, the first arc surface and the second arc surface of the light-reflecting member are arranged as symmetrical arc surfaces, which can make the reflected light rays more uniform, ensure the sterilization effect, and facilitate the manufacturing of the light-reflecting member.

[0019] In some embodiments of the present application, the first curved section and the fourth curved section are parabolic arc surfaces, the second curved section and the third curved section are involute arc surfaces, the tangent planes of the connecting positions of the parabolic arc surfaces and the involute arc surfaces are coincident, the arc of the involute arc surface is an involute, and the arc of the parabolic arc surface is a parabola.

[0020] In the technical solution, the first arc surface and the second arc surface of the reflection groove are symmetrically designed, the groove surface reflecting ultraviolet light is designed, the first arc surface is designed first, and then the second arc surface is obtained according to symmetry. The involute of the involute arc surface is determined according to the diameter and position of the ultraviolet light source, the involute arc surface is smoothly connected to the parabolic arc surface at one end, the slope of the connecting point of the involute arc surface and the parabolic arc surface is the same, and the connecting point is the focus of the parabolic arc surface of the second arc surface. In this way, the connection between the involute arc surface and the parabolic arc surface is smooth, and the convenience of the reflection member in production and processing is improved.

[0021] In some embodiments of the present application, the reflection member comprises:

[0022] a base layer connected to the base, and a concave groove formed in the middle of the base layer;

[0023] a reflection layer arranged in the concave groove and adhered to the surface of the concave groove, and the side of the reflection layer facing the middle of the concave groove being the reflection concave groove.

[0024] In the technical solution, the reflection member can be composed of one or more than two material layers. Since the main ultraviolet light in the sterilization and disinfection ultraviolet light source is short-wavelength ultraviolet light, the basic concave groove shape of the light-emitting concave groove is formed by arranging the base layer, and the reflection arc surface of the reflection concave groove is formed by arranging the reflection layer in the concave groove. The reflection layer is selected from a material layer of polytetrafluoroethylene, aluminum and other materials with high reflectivity to short-wavelength light, thereby ensuring the reflection effect of the ultraviolet light source and improving the utilization rate of the light source.

[0025] In some embodiments of the present application, the reflection member further comprises:

[0026] two shielding plates arranged at the two ends of the reflection concave groove, respectively, and the side of the shielding plate facing the middle of the reflection concave groove having a reflection surface.

[0027] In the technical solution, the shielding plates are arranged at the two ends of the reflection concave groove of the reflection member to reduce the leakage of the light sources on both sides. The shielding plates can be integrated with the reflection member or additionally arranged at the two ends of the reflection member.

[0028] In some embodiments of the present application, the shielding plate is an arc plate, and the shielding plate protrudes outward relative to the reflection concave groove.

[0029] In the technical scheme, the shielding plate can be an arc-shaped plate protruding outward from the light-reflecting groove, so that the area of the light outlet is not less than the internal area, and the light irradiated to both sides can be reflected to the light-reflecting groove outlet, improving the utilization efficiency of the ultraviolet light source and further improving the sterilization effect.

[0030] In some embodiments of the present application, the ultraviolet light source is a long strip-shaped light source, and the length direction of the ultraviolet light source is parallel to the first arc surface and the second arc surface.

[0031] In the technical scheme, the air inlet of the air conditioner indoor unit and the indoor heat exchanger are usually a large rectangular plane, and the ultraviolet light source is a long strip-shaped light source, which can cover the entire plane and irradiate as few other parts of the air conditioner as possible. For example, the ultraviolet light source can be composed of two or more point light sources, a line light source, a long strip-shaped plane light source, a cylindrical light source, a cuboid light source, etc.

[0032] In some embodiments of the present application, the light-reflecting member is long strip-shaped, and the ratio of the length of the light-reflecting groove to the width of the light-reflecting groove is greater than 1.5.

[0033] In the technical scheme, the ratio of the length of the light-reflecting groove to the width of the light-reflecting groove is greater than 1.5, which can better adapt to the long strip-shaped light source, reduce the shielding of the light source itself to the light, and make the light better reflected by the light-reflecting groove.

[0034] In some embodiments of the present application, the base is arranged on the indoor heat exchanger and located at an end of the indoor heat exchanger.

[0035] In the technical scheme, the base for installing the ultraviolet light source is arranged on the indoor heat exchanger for fixation, and is arranged at one end of the indoor heat exchanger, so that the ultraviolet light source irradiates from the end, can fully cover the air inlet plane, and improves the sterilization effect.

[0036] In addition, the present application also provides an air conditioner indoor unit, comprising:

[0037] a shell, one side of which is provided with an indoor air inlet;

[0038] an indoor heat exchanger arranged in the shell;

[0039] an ultraviolet sterilization module arranged in the shell, comprising:

[0040] a base arranged between the indoor air inlet and the indoor heat exchanger;

[0041] A light-reflecting piece is arranged on the base, and the light-reflecting piece is provided with a light-reflecting groove on one side of the indoor heat exchanger facing the indoor air inlet, the opening of the light-reflecting groove faces between the indoor air inlet and the indoor heat exchanger, the cross section of the light-reflecting groove is W-shaped and the middle bending part has a depth;

[0042] An ultraviolet light source is arranged in the light-reflecting groove and used for irradiating the airflow entering from the indoor air inlet.

[0043] In the technical scheme, the light-reflecting piece is arranged on the side of the ultraviolet light source used for sterilization, the light-reflecting piece can reflect the ultraviolet light dispersedly irradiated by the ultraviolet light source, the light of the ultraviolet light source is concentrated and irradiated towards the air entering the indoor unit of the air conditioner, thereby improving the utilization rate of the ultraviolet light. In addition, the shape of the light-reflecting groove surface of the light-reflecting groove is set as W-shaped, and the ultraviolet light source is arranged at the middle bending part, the light emitted by the ultraviolet light source in the direction away from the opening of the light-reflecting groove is reflected to the outlet direction of the light-reflecting groove through the arc surfaces of the two arcs, thereby the light emitted by the ultraviolet light source in the direction away from the light-reflecting groove can be utilized, the sterilization efficiency of the ultraviolet light source is further improved, and the light leakage problem caused by the shielding can be avoided.

[0044] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a schematic diagram of the overall structure of the indoor unit of the air conditioner according to the embodiment of the present application;

[0046] Figure 2 is a schematic diagram of the position structure of the ultraviolet light source inside the indoor unit of the air conditioner according to the embodiment of the present application;

[0047] Figure 3 is a schematic diagram of the internal side structure of the indoor unit of the air conditioner according to the embodiment of the present application;

[0048] Figure 4 is a schematic diagram of the assembled structure of the base, the light-reflecting piece, the ultraviolet light source and the left shielding plate according to the embodiment of the present application;

[0049] Figure 5 is a schematic diagram of the assembled structure of the base, the light-reflecting piece, the ultraviolet light source and the right shielding plate according to the embodiment of the present application;

[0050] Figure 6 is a schematic diagram of the assembled internal structure of the base, the light-reflecting piece, the ultraviolet light source and the shielding plate according to the embodiment of the present application;

[0051] Figure 7It is a schematic diagram of the structure of the reflecting piece and the ultraviolet light source according to the embodiment of the present application;

[0052] Figure 8 It is a schematic diagram of the side structure of the reflecting piece and the ultraviolet light source according to the embodiment of the present application;

[0053] Figure 9 It is a schematic diagram of the enlarged structure of the partial A of the reflecting piece according to the embodiment of the present application;

[0054] Figure 10 It is a design principle diagram of the arc lines of the first arc surface and the second arc surface of the reflecting piece according to the embodiment of the present application;

[0055] Figure 11 It is a schematic diagram of the side structure of the reflecting piece and the ultraviolet light source according to the embodiment of the present application.

[0056] In the above figures: 100, the shell; 110, the indoor air inlet; 200, the indoor heat exchanger; 300, the base; 400, the reflecting piece; 410, the base layer; 420, the reflecting layer; 410, the reflecting groove; 420, the first arc surface; 430, the second arc surface; 440, the involute segment arc surface; 450, the parabolic segment arc surface; 500, the ultraviolet light source; 600, the shielding plate. DETAILED DESCRIPTION

[0057] In the description of the present application, it is understood that the orientation or positional relationship indicated by 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 is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing 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.

[0058] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0060] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0061] In the following, the present application will be described in detail by exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0062] In this application, the air conditioner indoor unit includes a housing, an indoor heat exchanger and an indoor fan. The indoor heat exchanger and the indoor fan are arranged in the housing. The indoor air enters the housing and contacts the indoor heat exchanger, and the indoor heat exchanger exchanges heat with the air, and the heat-exchanged air is output to the indoor under the action of the indoor fan, thereby adjusting the indoor temperature.

[0063] In the following, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0064] As shown in the accompanying Figures 1 to 10 As shown in the accompanying

[0065] As shown in the accompanying Figure 2As shown, the air conditioner indoor unit includes an indoor heat exchanger 200, which is arranged inside the shell 100 and used for heat exchange of the incoming air. The area of the indoor heat exchanger 200 corresponding to the indoor air inlet 110 is greater than that of the indoor air inlet 110.

[0066] The air conditioner indoor unit includes an ultraviolet sterilization module. The ultraviolet sterilization module includes a base 300 arranged between the indoor air inlet 110 and the indoor heat exchanger 200. The base 300 can include a lower fixing seat and an upper cover body, which cooperate to form a box body with a side opening having a containing space. Screw hole positions and a fixing support plate are arranged on the lower fixing seat, and the base 300 is fixed in the shell 100 through the lower fixing seat.

[0067] The ultraviolet sterilization module includes a light-reflecting piece 400 arranged in the base 300.

[0068] As shown, Figures 4 to 6 The light-reflecting piece 400 is provided with a light-reflecting groove 410. The opening of the light-reflecting groove 410 is a light outlet, which faces between the indoor air inlet 110 and the indoor heat exchanger 200, so that the ultraviolet light irradiates the air entering the shell 100.

[0069] As shown, Figures 7 to 9 The groove surface of the light-reflecting groove 410 is a light-reflecting surface, which includes a first arc surface 420 and a second arc surface 430. The first arc surface 420 includes a first curved segment and a second curved segment connected smoothly in sequence, and the second arc surface 430 includes a third curved segment and a fourth curved segment connected smoothly in sequence. The first arc surface 420 includes the first curved segment and the second curved segment, the curvature of the first curved segment is smaller than that of the second curved segment, and the first curved segment is curved toward the side of the indoor air inlet 110. The second arc surface includes the third curved segment and the fourth curved segment, the curvature of the third curved segment is greater than that of the fourth curved segment, and the fourth curved segment is curved toward the side of the indoor heat exchanger 200. The bending directions of the second curved segment and the third curved segment are the same and face one end of the shell 100, and the first curved segment, the second curved segment, the third curved segment and the fourth curved segment are connected in sequence. That is, the arc shapes of the first arc surface 420 and the second arc surface 430 are both J-shaped, the first arc surface 420 and the second arc surface 430 are connected oppositely, and the low end of the J-shaped first arc surface 420 and the low end of the J-shaped second arc surface 430 are connected at the middle part of the light-reflecting groove 410. Moreover, the spacing of the partial arc surfaces located at the two side edges gradually increases from the bottom of the light-reflecting groove 410 to the opening.

[0070] The air conditioner indoor unit includes an ultraviolet light source 500. The ultraviolet light source 500 is arranged in the light-reflecting groove 410 and located at the connection between the first arc surface 420 and the second arc surface 430. The ultraviolet light source 500 emits ultraviolet light, which is used to irradiate the air flow entering from the indoor air inlet 110 and sterilize and disinfect the air flow.

[0071] By the above scheme, the light reflecting piece 400 is arranged on the side of the ultraviolet light source 500 for sterilization, and the light reflecting piece 400 can reflect the ultraviolet light scattered by the ultraviolet light source 500, so that the light of the ultraviolet light source 500 is concentrated to irradiate the air entering the air conditioner indoor unit, thereby improving the utilization rate of the ultraviolet light. Moreover, the shape of the light reflecting groove surface of the light reflecting groove 410 is arranged as two oppositely connected J-shaped arc surfaces, and the ultraviolet light source 500 is arranged at the connection position. The arc shape of the two arc surfaces can reflect the light emitted by the ultraviolet light source 500 away from the opening of the light reflecting groove 410 to the outlet direction of the light reflecting groove 410, so that the light away from the ultraviolet light source 500 can be utilized, the sterilization efficiency of the ultraviolet light source 500 is further improved, and the problem of light leakage caused by shielding can be avoided. The light irradiation intensity of the module is about 140% of the conventional module. The whole machine equipped with the module improves the sterilization rate of 1 h in a 30 m³ space from 85% to 95%.

[0072] In some embodiments, the first arc surface 420 and the second arc surface 430 are symmetrical arc surfaces. The first arc surface 420 and the second arc surface 430 are symmetrical, that is, the size and angle are symmetrical to each other. In this way, the reflected light can be more uniform, ensuring the sterilization effect, and the light reflecting piece 400 can be easily manufactured.

[0073] In some embodiments, as shown in Figure 8 , the first arc surface 420 and the second arc surface 430 each have a smooth and continuous parabolic segment arc surface 450 and an involute segment arc surface 440. The arc shape of the parabolic segment arc surface 450 is a parabola, and the arc shape of the involute segment arc surface 440 is an involute. The involute segment arc surface 440 of the first arc surface 420 is connected to the involute segment arc surface 440 of the second arc surface 430.

[0074] As shown in Figure 10 , taking the arc shape of the first arc surface 420 as an example, CF1 is an involute determined by the diameter and position of the ultraviolet light source 500. AF1 is a parabola intersecting CF1 at F1, and the slopes of the two line segments at point F1 are the same to maintain the smoothness of the arc surface. F2 is the focus of the parabola AF1. Similarly, F1 is the focus of the parabola BF2. Alpha is a sterilization and purification light ray emitted by the light source from D point, and the landing point on the arc surface is F2. GF2 is the normal line of the light ray alpha at point F2, and theta c is the angle of the light ray in the vertical direction. The involute has the property that the normal line of any point on the involute must be tangent to the base circle of the involute. By adjusting the position of the F2 landing point to make the GF2 light source diameter base circle tangent, F2 is a point on the involute at this time. By adjusting the size of theta c , the reflected light ray F2D is at the horizontal position, and its extension line intersects at point F1. At this time, theta cTo maximize the receiving half-angle, with F1 as the focal point and F2 as a point on the parabola, the shape of the parabola F2B can be designed. Similarly, the complete curve of the symmetrical second arc surface 430 can be obtained. This allows for a smooth connection between the involute arc surface 440 and the parabolic arc surface 450, while also improving the ease of manufacturing and processing of the reflector 400.

[0075] In some embodiments, such as Figure 8 as well as Figure 9 As shown, the reflector 400 includes a base layer 410 and a reflective layer 420. The base layer 410 is connected to the base 300, and a groove is provided in the middle of the base layer 410. The reflective layer 420 is disposed in the groove and adheres to the surface of the groove, with the side of the reflective layer 420 facing the middle of the groove being the reflective groove 410.

[0076] The reflective element 400 can be composed of one or more material layers. Since short-wavelength ultraviolet and blue light are the mainstream light sources used for sterilization and disinfection, the base layer 410 forms the basic groove shape of the light-emitting groove, and then a reflective layer 420 is set in the groove to form the reflective arc surface of the reflective groove 410. The reflective layer 420 is made of materials such as polytetrafluoroethylene and aluminum, which have high reflectivity to short-wavelength light, thereby ensuring the reflective effect on the ultraviolet light source 500.

[0077] In some embodiments, the reflector 400 further includes a baffle plate 600. The baffle plate 600 is disposed at both ends of the reflective groove 410, and the side of the baffle plate 600 facing the reflective groove 410 has a reflective surface. The baffle plate 600 may be integral with the reflector 400 or additionally disposed at both ends of the reflector 400. The baffle plate 600 closes the two ports of the reflective groove 410, thereby reducing the leakage of light sources from both sides.

[0078] In some embodiments, the baffle 600 can be a flat plate, more preferably an arc-shaped plate, and the baffle 600 protrudes outward toward the reflective groove 410, such that the area of ​​the light outlet is not less than the internal area. This allows light incident from both sides to be reflected to the outlet of the reflective groove 410, improving the utilization efficiency of the ultraviolet light source 500.

[0079] In some embodiments, the ultraviolet light source 500 is a strip-shaped light source, and the length direction of the ultraviolet light source 500 is parallel to the first arc surface 420 and the second arc surface 430. The ultraviolet light source 500 can be a combination of two or more point light sources, a line light source, a strip-shaped planar light source, a cylindrical light source, a cuboid light source, etc. The air inlet of the indoor unit of the air conditioner and the indoor heat exchanger 200 are usually in a large rectangular plane. The ultraviolet light source 500 is set as a strip-shaped light source, which can cover the entire plane and illuminate as little as possible onto other components of the air conditioner.

[0080] In some embodiments, the light-reflecting piece 400 is long-strip-shaped, and the ratio of the length of the light-reflecting groove 410 to the width of the light-reflecting groove 410 is greater than 1.5. That is, the light-reflecting groove is configured from the perspective of the light outlet, and the ratio of the length direction of the light-reflecting groove to the height direction is greater than 1.5:1. In this way, the light-reflecting groove is adapted to the long-strip-shaped light source, reduces the blocking of the light source itself to the light, and makes the light better reflected by the light-reflecting groove 410.

[0081] In some embodiments, the base 300 is arranged on the indoor heat exchanger 200 and located at the end of the indoor heat exchanger 200. The light-reflecting piece 400 can be fixed on the base 300 by pasting or clamping, etc. The ultraviolet light source 500 is installed in the light-reflecting piece 400, which facilitates the installation of the ultraviolet sterilization part in the air conditioner indoor unit. Moreover, the ultraviolet light source 500 is arranged at one end of the indoor heat exchanger 200 and irradiated from the end, which can fully cover the air inlet plane.

[0082] Please refer to Figures 1 to 3 and Figure 11 In addition, the present application also provides an air conditioner indoor unit, which comprises a shell 100, an indoor heat exchanger 200, a base 300, a light-reflecting piece 400 and an ultraviolet light source 500. The top surface of the shell 100 is provided with an indoor air inlet 110 through which indoor air enters. The indoor air inlet 110 is a rectangular grid opening, so that the air flow cross section entering from the indoor air inlet 110 is also rectangular. The indoor heat exchanger 200 is arranged inside the shell 100; the base 300 is arranged between the indoor air inlet 110 and the indoor heat exchanger 200; the light-reflecting piece 400 is arranged on the base 300 and used for reflecting part of the ultraviolet light emitted by the ultraviolet light source 500.

[0083] As shown in Figure 11 , the light-reflecting piece 400 is provided with a light-reflecting groove 410 in the middle, the cross section of the light-reflecting groove 410 is W-shaped and the middle bending part has a depth, and the opening of the light-reflecting groove 410 faces between the indoor air inlet 110 and the indoor heat exchanger 200.

[0084] The ultraviolet light source 500 is arranged in the W-shaped middle bending part in the light-reflecting groove 410 and used for irradiating the air flow entering from the indoor air inlet 110.

[0085] Through the above scheme, by setting the reflecting piece 400 on the side of the ultraviolet light source 500 for sterilization, the reflecting piece 400 can reflect the ultraviolet light dispersedly irradiated by the ultraviolet light source 500, so that the light of the ultraviolet light source 500 is concentrated to irradiate the air entering the air conditioner indoor unit, thereby improving the utilization rate of the ultraviolet light. Moreover, by setting the shape of the reflecting groove surface of the reflecting groove 410 as W-shaped, and setting the ultraviolet light source 500 at the middle bending part, the light emitted by the ultraviolet light source 500 away from the opening of the reflecting groove 410 can be reflected to the opening direction of the reflecting groove 410 through the arc shape of the two arc surfaces, so that the light away from the ultraviolet light source 500 can be utilized, further improving the sterilization efficiency of the ultraviolet light source 500, and avoiding the light leakage problem caused by the shielding.

[0086] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. An indoor unit for an air conditioner, characterized in that, It includes: The casing has an indoor air inlet on one side; An indoor heat exchanger is disposed inside the housing; The ultraviolet sterilization module, disposed within the housing, includes: A base is disposed between the indoor air inlet and the indoor heat exchanger; A reflective element is disposed on the base. The reflective element has a reflective groove on the side facing the indoor air inlet and the indoor heat exchanger. The opening of the reflective groove faces the space between the indoor air inlet and the indoor heat exchanger. The groove surface of the reflective groove includes a first arc surface and a second arc surface for reflection. The first arc surface includes a first curved segment and a second curved segment, the curvature of the first curved segment is less than the curvature of the second curved segment, and the first curved segment bends toward the indoor air inlet side; The second arc surface includes a third curved segment and a fourth curved segment, wherein the curvature of the third curved segment is greater than the curvature of the fourth curved segment, and the fourth curved segment bends toward the indoor heat exchanger side; The second and third curved segments bend in the same direction and are directed toward one end of the housing. The first, second, third, and fourth curved segments are connected sequentially. An ultraviolet light source is disposed at the junction of the first and second arc surfaces in the reflective groove, and is used to irradiate the airflow entering from the indoor air inlet.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The first arc surface and the second arc surface are symmetrical arc surfaces.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The first and fourth curved segments are parabolic arc surfaces, the second and third curved segments are involute arc surfaces, and the tangents at the connection points of adjacent parabolic and involute arc surfaces coincide. The arc shape of the involute arc surface is an involute shape, and the arc shape of the parabolic arc surface is a parabola.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, The reflective element includes: A base layer, which is connected to the base, has a groove in the middle; A reflective layer is disposed in the groove and adheres to the surface of the groove, wherein the side of the reflective layer facing the center of the groove is the reflective groove.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The reflector also includes: Two shielding plates are respectively disposed at both ends of the reflective groove, and the side of the shielding plate facing the middle of the reflective groove has a reflective surface.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The shielding plate is an arc-shaped plate, and the shielding plate protrudes outward from the reflective groove.

7. The indoor unit of the air conditioner according to claim 1, characterized in that, The ultraviolet light source is a long strip-shaped light source, and the length direction of the ultraviolet light source is parallel to the first arc surface and the second arc surface.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The reflector is elongated, and the ratio of the length of the reflective groove to the width of the reflective groove is greater than 1.

5.

9. The indoor unit of the air conditioner according to claim 1, characterized in that, The base is disposed on the indoor heat exchanger and is located at the end of the indoor heat exchanger.

10. An indoor unit for an air conditioner, characterized in that, It includes: The casing has an indoor air inlet on one side; An indoor heat exchanger is disposed inside the housing; The ultraviolet sterilization module, disposed within the housing, includes: A base is disposed between the indoor air inlet and the indoor heat exchanger; A reflective element is disposed on the base. The reflective element has a reflective groove on the side facing the indoor air inlet and the indoor heat exchanger. The opening of the reflective groove faces the space between the indoor air inlet and the indoor heat exchanger. The cross-section of the reflective groove is W-shaped and has depth at the bend in the middle. An ultraviolet light source is disposed within the reflective groove to irradiate the airflow entering from the indoor air inlet.

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