CN111486572A - Air conditioner and indoor unit of air conditioner - Google Patents

Abstract

The utility model provides an air conditioner and air conditioning indoor unit, this air conditioning indoor unit include indoor unit main part, metal decking, integrated circuit board and two antenna preforming. The metal panel is detachably covered on the outer surface of the indoor unit main body. The surface of the integrated circuit board is provided with a ground plane and a feed position. One end of one antenna pressing sheet is connected with the ground plane, and the other end of the antenna pressing sheet is connected with the metal panel. One end of the other antenna pressing sheet is connected with the feed potential, the other end of the other antenna pressing sheet is connected with the metal panel, so that the two antenna pressing sheets, the integrated circuit board and the metal panel jointly form an antenna radiating body, the antenna radiating body is used as a part of an antenna, the receiving range and the transmitting range of wireless communication signals of the indoor unit of the air conditioner are enlarged, the shielding effect of the metal panel on the wireless communication signals is avoided, and the stability of the wireless communication signals is further improved.

Description

Air conditioner and indoor unit of air conditioner

Technical Field

The disclosure relates to the technical field of air conditioners, in particular to an air conditioner and an air conditioner indoor unit.

Background

The air conditioner widely enters the life of people and is gradually integrated into the design of smart homes. Some current intelligent air conditioners have realized carrying out the function of regulation and control through receiving wireless communication signal, and the user can output the wireless communication signal of regulation and control intelligent air conditioner through remote controller or cloud platform, and intelligent air conditioner carries out the function regulation and control according to this wireless communication signal to convenience of customers' use.

For an air conditioner with a wireless communication function, a wireless communication module is configured in an indoor unit of the air conditioner to receive wireless communication signals. When the air conditioner operates in a cooling mode, the indoor unit outputs cold air to enable the indoor unit to be in a cold and hot alternate environment, so that the structure of the indoor unit is generally compact to avoid the phenomenon of condensation caused by cold and hot connection areas in the indoor unit. And the indoor set is inside to be provided with structures such as filter screen, evaporimeter, main control unit, so the wireless communication module often receives the restriction in the arrangement position in the indoor set. In some high-grade intelligent air conditioners, the indoor unit adopts a metal panel, the texture of the indoor unit is revealed through the metal panel, and the metal panel can enable the appearance effect of the indoor unit to be better through surface treatment, so that the appearance of the intelligent air conditioner is improved. However, the metal panel has a shielding effect on the wireless communication signals, and also affects the arrangement of the wireless communication module.

In some related technologies, the wireless communication module is disposed at an edge of the indoor unit, the display panel faces the display window of the metal panel, and the main controller is disposed inside the indoor unit. Because in the ordinary air conditioner, main control unit is connected with the display panel, to the intelligent air conditioner that has additional wireless communication module, in order to minimize main control unit's structural change, wireless communication module often passes through the cable and connects the display panel, realizes through the display panel with main control unit's communication connection, and the display panel is main control unit and wireless communication module's the transfer station of being connected promptly. However, the function of the general display panel is single, the control unit inside the general display panel is often simple, a single chip microcomputer is often adopted, and the wireless communication module generally adopts an inner core, so that when the wireless communication signal received by the wireless communication module is transmitted to the main controller through the display panel, the signal channel is reduced, and the processing speed is low; and the signal that the control unit of display panel produced can cause certain interference to this wireless communication signal to influence wireless communication signal's stability, the condition that can even appear data loss.

In addition, the cable connection between the display panel and the wireless communication module is realized in a manual assembly mode, and the cable is easy to fall off when vibrating (for example, vibration caused by the working of an indoor unit motor during the operation of an air conditioner), so that the cable is in poor contact with the display panel or the wireless communication module, and the wireless communication signal is unstable.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

The utility model aims to provide an air conditioner and air conditioning indoor set solves the unstable problem of wireless communication signal among the prior art.

In order to solve the technical problem, the following technical scheme is adopted in the disclosure:

according to an aspect of the present disclosure, there is provided an indoor unit of an air conditioner, including: the metal panel is detachably covered on the outer surface of the indoor unit main body; the metal panel is provided with a display window; the integrated circuit board is provided with a ground plane and a feed potential on the surface; the integrated circuit board is fixedly arranged on the inner side of the metal panel, and faces the display window; at least two antenna pressing sheets are arranged at intervals along one side edge of the integrated circuit board; one end of one antenna pressing sheet is connected with the ground plane, and the other end of the antenna pressing sheet is connected with the metal panel; one end of the other antenna pressing sheet is connected with the feed potential, and the other end of the other antenna pressing sheet is connected with the metal panel, so that the two antenna pressing sheets, the integrated circuit board and the metal panel jointly form an antenna radiator.

Optionally, a gap is formed between the outer edge of the ground plane and the inner edge of the display window, and the two antenna patches are separated from the gap to form an antenna radiation slot region.

Optionally, the length of the antenna radiation slot region is a ratio of the light speed to twice the antenna frequency, the width of the antenna radiation slot region is a distance between an outer edge of the ground plane and an inner edge of the display window, and the distance is 1mm to 10 mm.

Optionally, the display window is rectangular; the two antenna pressing sheets are arranged at intervals along one long edge of the rectangle, and the edge of the grounding layer facing the long edge is flush with the corresponding side edge outer contour of the integrated circuit board.

Optionally, the ground plane is rectangular, and a gap is formed at the feed potential; and the antenna pressing sheet is inserted in the notch and connected with the feed position, and the wireless communication circuit is arranged corresponding to the area surrounded by the ground plane.

Optionally, the indoor unit of the air conditioner further comprises a display screen; the display screen is connected with the integrated circuit board and faces the display window.

Optionally, the integrated circuit board has a wireless communication circuit, and the wireless communication circuit is electrically connected to the ground plane and the feed potential respectively; the display module further comprises a signal transmission line, one end of the signal transmission line is electrically connected with the wireless communication circuit, and the other end of the signal transmission line is used for being electrically connected to a main controller of the indoor unit main body.

Optionally, a bending edge which is bent inwards is formed on the periphery of the display window of the metal panel, and a through hole is formed in the bending edge; the antenna pressing sheet is fixedly inserted into the through hole of the bending edge.

Optionally, one end of the antenna pressing sheet, which is far away from the integrated circuit board, is clamped between the display module and the metal panel, so that the antenna pressing sheet is abutted to the metal panel.

Optionally, one end of the antenna pad close to the integrated circuit board is attached to the ground plane or the feed potential on the integrated circuit board.

According to another aspect of the disclosure, the disclosure further provides an air conditioner, which includes any one of the air conditioner indoor units and an outdoor unit connected to the air conditioner indoor unit.

According to the technical scheme, the method has the advantages that:

in the air conditioner and the indoor unit of the air conditioner, the integrated circuit board is provided with the wireless communication circuit, the display screen is connected to the integrated circuit board, the influence of cable connection on the wireless communication circuit and the display screen is eliminated through the integrated circuit board, and the stability of wireless communication signals is ensured; in addition, the integrated circuit board and the display screen become a display module, so that the number of parts is reduced, and the assembly of the indoor unit is facilitated. Particularly, in the scheme of the disclosure, the two antenna pressing sheets, the display module and the metal panel jointly form an antenna radiator for the wireless communication circuit of the integrated circuit board to receive or transmit wireless communication signals, and the metal panel is used as a component of the antenna, so that the shielding effect of the metal panel on the wireless communication signals is avoided, the interference of a metal environment on the wireless communication signals is reduced, and the stability of the wireless communication signals is improved.

Furthermore, one end of the signal transmission line is electrically connected with the wireless communication circuit, and the other end of the signal transmission line is used for being electrically connected to a main controller of the indoor unit main body. The wireless communication circuit is directly connected with the main controller for communication, and the signal channel of the wireless communication circuit is larger than that of the traditional display panel, so that the wireless communication signal channel is enlarged, and the processing speed of the wireless communication signal is improved.

Drawings

Fig. 1 is a front view of an air conditioner of the present disclosure.

Fig. 2 is a front view of the air conditioning indoor unit of the present disclosure.

Fig. 3 is a side view of the air conditioning indoor unit of the present disclosure.

Fig. 4 is a bottom view of the air conditioning indoor unit of the present disclosure.

Fig. 5 is an exploded view of the air conditioning indoor unit of the present disclosure.

Fig. 6 is a connection diagram of a display module and a metal panel of the air conditioner indoor unit of the present disclosure.

Fig. 7 is a connection diagram of another view angle between the display module and the metal panel of the air conditioning indoor unit of the present disclosure.

Fig. 8 is a schematic view of the backside structure at a in fig. 2.

Fig. 9 is a schematic structural diagram of a display module according to another embodiment of the present disclosure.

Fig. 10 is a schematic structural diagram of an antenna radiation slot region according to another embodiment of the present disclosure.

Fig. 11 is a partial enlarged view at B in fig. 8.

Fig. 12 is a partial sectional view taken along the direction C in fig. 8.

Fig. 13 is a schematic structural view of an air conditioning indoor unit according to the present disclosure.

Fig. 14 is a schematic structural diagram of an antenna wafer of an indoor unit of an air conditioner according to the present disclosure.

Fig. 15 is a schematic view of an antenna radiation slot area of the indoor unit of the air conditioner of the present disclosure.

Fig. 16 is a dual schematic view of an antenna radiation slot area of the air conditioner indoor unit of the present disclosure.

Fig. 17 is a test chart of standing wave ratio of the antenna radiator of the indoor unit of the air conditioner based on the antenna radiation gap area.

Fig. 18 is an efficiency comparison table of the antenna radiator of the indoor unit of the air conditioner according to the present disclosure based on the antenna radiation slot area.

The reference numerals are explained below:

100. an air conditioner; 110. an air-conditioning indoor unit; 120. an outdoor unit; 130. a pipeline;

1. an indoor unit main body; 11. a housing;

2. a metal panel; 21. displaying a window; 22. bending edges; 221. a through hole;

3. a display module; 31. a circuit board; 311. a ground plane; 3111. a notch; 312. feeding a potential; 313. a lower side edge; 314. welding a disc; 32. a display circuit; 33. a wireless communication circuit; 34. a display screen; 35. a rear cover; 351. heat dissipation holes; 36. a cover plate;

4. an antenna pressing sheet; 41. an antenna wafer main body; 42. a first connection end; 43. a second connection end;

5. a gap; 51. an antenna radiation slot region; 511. a first antenna radiating slot area 512 and a second antenna radiating slot area.

Detailed Description

Exemplary embodiments that embody features and advantages of the present disclosure will be described in detail in the following description. It is to be understood that the disclosure is capable of various modifications in various embodiments without departing from the scope of the disclosure, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

Fig. 1 is a front view of an air conditioner 100 of the present disclosure.

Referring to fig. 1, the present disclosure provides an indoor unit 110 of an air conditioner and an air conditioner 100 having the indoor unit 110 of the air conditioner, wherein the indoor unit 110 of the air conditioner can be a wall-mounted indoor unit, a floor-mounted indoor unit, or the like. With the development of smart homes, the indoor unit 110 of the air conditioner may integrate a remote control function, a display function, an entertainment function, and the like, so as to satisfy corresponding requirements of users.

Specifically, the air conditioner 100 includes an indoor unit 110 and an outdoor unit 120 connected to the indoor unit 110, and a duct 130 is provided between the indoor unit 110 and the outdoor unit 120. When the air conditioner 100 performs cooling, the refrigerant in a low-pressure and low-temperature state throttled and depressurized in the outdoor unit 120 is transported to the indoor unit 110 of the air conditioner through the pipe 130, and the cooling energy is output to the indoor unit 110 of the air conditioner. When the air conditioner 100 heats, the refrigerant in a high-temperature and high-pressure state compressed by the compressor in the outdoor unit 120 is transported to the indoor unit 110 through the pipe 130, and heat is output to the indoor unit 110 through the indoor unit 110.

In the related art, the metal environment has a shielding effect on the wireless communication signal, thereby affecting the arrangement of the wireless communication module. Meanwhile, the display panel is a connection transfer station of the main controller and the wireless communication module, so that a signal channel is reduced when the wireless communication signal received by the wireless communication module is transmitted to the main controller through the display panel, the processing speed is low, and the signal generated by the control unit of the display panel can cause certain interference on the wireless communication signal, thereby influencing the stability of the wireless communication signal. In addition, the cable between the display panel and the wireless communication module is connected, and the cable is easily in poor contact with the display panel or the wireless communication module due to vibration, so that a wireless communication signal is unstable.

Specifically, the indoor air conditioner 110 is a wall-mounted indoor unit. Fig. 2 is a front view of the air conditioning indoor unit of the present disclosure. Fig. 3 is a side view of the air conditioning indoor unit of the present disclosure. Fig. 4 is a bottom view of the air conditioning indoor unit of the present disclosure. Fig. 5 is an exploded view of the air conditioning indoor unit of the present disclosure.

Referring to fig. 2 to 5, an air conditioning indoor unit 110 provided by the present disclosure mainly includes an indoor unit main body 1, a metal panel 2, a display module 3, and two antenna patches 4. The metal panel 2 is detachably covered on the outer surface of the indoor unit main body 1, and the metal panel 2 is provided with a display window 21. The display module 3 comprises an integrated circuit board 31 and a display screen 34, wherein the integrated circuit board 31 integrates a display circuit 32 and a wireless communication circuit 33, so that the display module 3 integrates a display function and a wireless communication function, the display module 3 is fixedly arranged on the inner side of the metal panel 2, and the display circuit 32 and the wireless communication circuit 33 face the display window 21. Display module 3 is connected to the one end of antenna preforming 4, metal panel 2 is connected to the other end, through two antenna preforming 4, display module 3 and metal panel 2 constitute antenna radiation body jointly to supply wireless communication circuit 33 to receive or transmit wireless communication signal, metal panel 2 is as the component part of antenna, metal panel 2 has been avoidd the shielding effect to wireless communication signal, thereby reduce the interference of metallic environment to wireless communication signal, and then improve wireless communication signal's stability.

The indoor unit main body 1 is a main structure of the air conditioning indoor unit 110, and generally includes a casing 11, an evaporator (not shown) installed in the casing 11, a fan (not shown) located inside the evaporator to perform forced heat exchange, a motor (not shown) for driving the fan to rotate, a filter (not shown) for covering an air intake side of the evaporator, and the like, and the casing 11 of the indoor unit main body 1 also generally includes an electrical box (not shown) in which a main controller (not shown) and other necessary electrical components are installed.

The main controller is configured to receive a control signal from a user to the air conditioner 100 and control operations of various components in the air conditioner 100, and mainly includes start and stop controls of an air conditioner compressor, an indoor unit fan, and an outdoor unit fan. In addition, based on the user's requirement, the main controller may also control the display module to display the use state (e.g., operation mode, set temperature, wind speed, etc.) of the air conditioner 100.

For the air conditioner indoor unit 110 with the wireless communication function in this embodiment, the control signal of the user to the air conditioner 100 may be a remote control signal transmitted by a remote controller, or may be a wireless communication signal output by the cloud platform after the user operates through an intelligent electronic device (e.g., a smart phone).

Optionally, the metal panel 2 is fixed to the casing 11 of the indoor unit main body 1 by screwing or snapping, so that the metal panel 2 is detachably covered on the outer surface of the indoor unit main body 1, specifically, the metal panel 2 is generally located in front of the indoor unit main body 1, and may also be located on the side surface and the bottom surface of the indoor unit main body 1, and is convenient for a user to view. The metal panel 2 can change the visual effect thereof through surface treatment, can effectively improve the overall visual effect of the air-conditioning indoor unit 110, and has good shielding effect on components such as a filter screen, an evaporator and the like. In addition, the metal panel 2 can be detached from the indoor unit main body 1, so that the user can detach the filter net and clean the evaporator. Specifically, the metal panel 2 is generally in the form of a long plate.

Fig. 2 is a front view of the air conditioning indoor unit 110 of the present disclosure.

As shown in fig. 2, in the present embodiment, the position of the display window 21 on the metal panel 2 is approximately located at the middle-lower portion, but the position of the display window 21 is not limited thereto. The shape of the display window 21 of the metal panel 2 is optionally rectangular, wherein the long side of the display window 21 coincides with the length direction of the metal panel 2. The display window 21 is mainly used for displaying a corresponding display component, so that the display component is exposed to the metal panel 2 through the display window 21, and can be visually protected by matching with a shield (not shown).

Fig. 2 is a front view of the air conditioning indoor unit 110 of the present disclosure. Fig. 8 is a schematic view of the backside structure at a in fig. 2.

Referring to fig. 8 and 2, the display module 3 may be fixed to the casing 11 of the indoor unit main body 1, such as by a snap-fit or a bolt connection. If the waterproof performance of the display module 3 needs to be improved, the sealing ring or the sealant can be filled along the peripheral side of the display module 3, so that the display module 3 and water are effectively isolated, and the service life of the display module 3 is prevented from being reduced. The display module 3 is mounted on the housing 11 at a position opposite to the display window 21 of the metal panel 2 and facing the display window 21 of the metal panel 2, so that the display module 3 is fixedly arranged on the inner side of the metal panel 2. In other alternative ways, the display module 3 may also be directly fixed on the metal panel 2, and the display module 3 is adapted to the display window 21 of the metal panel 2 and fixed by a connecting structure arranged inside the metal panel 2.

Fig. 6 is a connection diagram of a display module and a metal panel of the air conditioner indoor unit of the present disclosure. Fig. 7 is a connection diagram of another view angle between the display module and the metal panel of the air conditioning indoor unit of the present disclosure.

Referring to fig. 6 and 7, the display module 3 is disposed inside the metal panel 2, and the display module 3 is electrically connected to the metal panel 2, so that the metal panel 2 serves as a main carrier for the display module 3 to externally receive and transmit wireless communication signals. Because the display module 3 needs to be matched with the metal panel 2 to be capable of receiving and transmitting wireless communication signals outwards in a large range, the display module 3 can be fixedly arranged on the metal panel 2, so that the display module 3 and the metal panel 2 form an independent module, modular production and assembly of the indoor unit of the air conditioner are facilitated, and production efficiency of the indoor unit of the air conditioner is improved.

In the display module 3, the display circuit 32 and the wireless communication circuit 33 are disposed on the same integrated circuit board 31 and electrically connected to each other through the internal circuit of the integrated circuit board 31, so that the display circuit 32 and the wireless communication circuit 33 are integrated on the same integrated circuit board 31, thereby eliminating the influence of cable connection on the display circuit 32 and the wireless communication circuit 33 and ensuring the stability of wireless communication signals. The display panel 34 is connected to the integrated circuit board 31 and electrically connected to the display circuit 32. Specifically, the display 34 is an electronic display or a liquid crystal display, and is plugged or soldered or connected to the integrated circuit board 31 by a flat cable, which is not limited herein. The display screen 34 displays the use state (such as the working mode, the set temperature, the wind speed, etc.) of the indoor unit 110 according to the display signal output by the display circuit 32.

The integrated circuit board 31 may be a single-sided board, a double-sided board or a multi-layered board, and is selected according to actual requirements to meet the functional requirements. The integrated circuit board 31 is fixedly disposed on the inner side of the metal panel 2, and specifically, the integrated circuit board 31 is fixed or fastened to the inner side of the metal panel 2 by screws. The integrated circuit board 31 is substantially rectangular and is fitted to the display window 21. The integrated circuit board 31 is provided with a ground plane 311 and a feeding potential 312 on a surface facing away from the metal panel 2. The ground plane 311 is exposed on the surface of the metal panel 2 and can be used to communicate other components with the integrated circuit board 31, so as to electrically connect other components with the integrated circuit board 31. The feed 312 is mainly used for connecting the antenna and the signal emitter, and the antenna is connected with the signal emitter by connecting the feed 312, so that the signal emitter effectively transmits signals to the antenna.

Fig. 8 is a schematic view of the backside structure at a in fig. 2. Fig. 11 is a partial enlarged view at B in fig. 8.

Referring to the view direction of fig. 8 and in conjunction with fig. 11, the ground plane 311 is located on the right half of the integrated circuit board 31, but is not limited to the right half of the integrated circuit board 31. Wherein the outer edge of the ground plane 311 and the inner edge of the display window 21 have a gap 5 therebetween. The ground plane 311 is substantially rectangular surrounded by four sides, which is not limited herein. A notch 3111 is disposed at a lower right portion of the ground plane 311, the notch 3111 is disposed at a position close to the right of the integrated circuit board 31 and penetrates through a lower edge of the integrated circuit board 31, and the notch 3111 is substantially rectangular. Alternatively, the lower side of the ground plane 311 is flush with the lower side 313 of the integrated circuit board 31, so that the connection of the ground plane 311 to other components is shorter, and the edge position of the integrated circuit board 31 is fully utilized, and correspondingly, the coverage area of the ground plane 311 can be reduced. The feeding potential 312 is disposed in an area enclosed by the ground plane 311 and disposed corresponding to the notch 3111, and the feeding potential 312 is disposed near the right of the integrated circuit board 31 and does not contact the ground plane 311.

The wireless communication circuit 33 may be a wireless communication module having a function of processing a wireless communication signal and outputting the wireless communication signal, the wireless communication circuit 33 has a core for wireless communication signal operation, and the wireless communication circuit 33 is mainly used for receiving and transmitting the wireless communication signal. The wireless communication circuit 33 is disposed on the surface of the integrated circuit board 31 and integrated in the integrated circuit board 31, so that the integrated circuit board 31 can complete receiving and transmitting wireless communication signals in a short time. The wireless communication signals received or transmitted by the wireless communication circuit 33 can be applied to wireless transmission technologies such as WIFI, Bluetooth, ZigBee NB-IOT and the like. The wireless transmission technology is applied to the aspects of user life, the life style of the user can be changed, and the wireless transmission technology has the advantages of wide radiation range, short effect time and the like. The wireless communication circuit 33 is disposed on a side of the integrated circuit board 31 close to the metal panel 2, and is mounted on the integrated circuit board 31 opposite to an area enclosed by the ground plane 311. The wireless communication circuit 33 contacts the ground plane 311 and the feeding location 312 at the same time, and is electrically connected to the ground plane 311 and the feeding location 312, respectively. Specifically, the wireless communication circuit 33 is connected to the ground 311 and the feeding potential 312 through the circuit layer of the integrated circuit board 31. Further, in this embodiment, the core of the wireless communication circuit 33 can receive the display signal and process the display signal, so as to output the processed display signal to the display circuit 32, thereby controlling the display circuit 32 and further controlling the display of the display screen 34, so that the display circuit 32 and the wireless communication circuit 33 are commonly used in the core of the wireless communication circuit 33, and the signal channel of the core of the wireless communication circuit 33 is larger than the existing display circuit channel.

The display circuit 32 may not be provided with a core for operation, but may be controlled by the wireless communication circuit 33. Because the display circuit 32 is not provided with an inner core for operation, the display circuit 32 does not generate a signal which causes interference to the wireless communication signal, and the stability of the wireless communication signal is ensured. The display circuit 32 is disposed on a side of the integrated circuit board 31 close to the metal panel 2, and is on the same side as the wireless communication circuit 33. The display circuit 32 is located in the left half of the integrated circuit board 31.

The display panel 34 has a rectangular shape, is connected to the integrated circuit board 31, and is electrically connected to the display circuit 32. The display screen 34 displays the use state (such as the working mode, the set temperature, the wind speed, etc.) of the indoor unit 110 according to the display signal output by the display circuit 32. The display screen 34, the wireless communication circuit 33 and the display circuit 32 face the display window 21, and the display module 3 further includes a signal transmission line (not shown), one end of the signal transmission line (not shown) is electrically connected to the wireless communication circuit 33, and the other end of the signal transmission line (not shown) is electrically connected to the main controller of the indoor unit main body 1. The wireless communication circuit 33 is directly connected with the main controller for communication without passing through the display circuit 32, and meanwhile, the signal channel of the wireless communication circuit 33 is larger than that of the traditional display panel, so that the wireless communication signal channel is enlarged, and the processing speed of the wireless communication signal is improved.

Fig. 9 is a schematic structural diagram of a display module 3 according to another embodiment of the present disclosure.

Referring to fig. 9, optionally, the display module 3 is provided with two integrated circuit boards 31, and the two integrated circuit boards 31 are electrically connected, specifically, the two integrated circuit boards 31 are connected by a wire. An integrated circuit board 31 is provided with a wireless communication circuit 33, and the wireless communication circuit 33 is electrically connected to the ground plane 311 and the feeding position 312 respectively. The other integrated circuit board 31 is provided with a display circuit 32 and a display screen 34, and the display screen 34 is plugged or connected to the integrated circuit board 31 through a flat cable and is electrically connected with the display circuit 32.

Fig. 5 is an exploded view of the air conditioning indoor unit 110 of the present disclosure. Fig. 12 is a partial sectional view taken along the direction C in fig. 8.

Further, referring to fig. 5 and 12, the display module 3 may further include a back cover 35 and a cover plate 36, the cover plate 36 is fastened to the back cover 35 and forms an inner cavity, and the cover plate 36 is disposed on a side of the back cover 35 close to the metal panel 2. The integrated circuit board 31 and the display circuit 32 and the wireless communication circuit 33 thereon are accommodated in the inner cavity formed by the cover plate 36 and the rear cover 35. One side of the rear cover 35 close to the integrated circuit board 31 is provided with a plurality of heat dissipation holes 351, the plurality of heat dissipation holes 351 are uniformly arranged, and specifically, the heat dissipation holes 351 are substantially rectangular. The facing is in opposite directions between a plurality of louvres 351 for the air runs through a plurality of louvres 351 in proper order, makes louvre 351 make things convenient for the air convection, and the convection current region is great, thereby accelerates the heat dissipation to integrated circuit board 31, avoids integrated circuit board 31 high temperature under long-term use state, and improves integrated circuit board 31's life.

Fig. 8 is a schematic view of the backside structure at a in fig. 2. Fig. 12 is a partial sectional view taken along the direction C in fig. 8.

Referring to fig. 8 and 12, the indoor unit of an air conditioner includes at least two antenna patches 4. In the usage scenario where the number of the antenna patches 4 is two, the two antenna patches 4 are disposed at intervals along the lower side 313 of the integrated circuit board 31, and it can be said that the two antenna patches 4 are disposed at intervals along the long side of the lower side of the display window 21. The antenna wafer 4 is made of a conductive material, and specifically, the antenna wafer 4 may be a copper sheet. One end of one of the antenna patches 4 is connected to the ground plane 311, and the other end is connected to the metal panel 2. One end of the other antenna pad 4 is connected to the feeding potential 312, and the other end is connected to the metal panel 2. Since the ground plane 311 and the feeding position 312 are connected, the two antenna patches 4, the integrated circuit board 31 and the metal panel 2 form a closed-loop connecting conductor, and the metal panel 2 becomes a part of the antenna radiator. In addition, the two antenna pressing sheets 4 are separated from the gap 5 to form an antenna radiation gap region 51, so that the region enclosed by the two antenna pressing sheets 4, the integrated circuit board 31 and the metal panel 2 is the antenna radiation gap region 51.

Fig. 10 is a schematic structural diagram of an antenna radiation slot region according to another embodiment of the present disclosure.

Further, referring to fig. 10, in a usage scenario where the number of the antenna patches 4 exceeds two, the antenna patches 4 are sequentially disposed along the lower side 313 of the integrated circuit board 31 at intervals, so that the adjacent antenna patches 4 form one antenna radiation slot area 51 under the combination of the integrated circuit board 31 and the metal panel 2, and thus each antenna patch 4 can partition the gap 5 into a plurality of antenna radiation slot areas 51. Specifically, a first antenna radiation slot area 511 is formed between the two antenna pressing sheets 4, when one antenna pressing sheet 4 is additionally arranged between the two antenna pressing sheets 4 or outside the two antenna pressing sheets 4, and a second antenna radiation slot area 512 is formed, so that the second antenna radiation slot area 512 is additionally arranged on the basis of the first antenna radiation slot area 511, the first antenna radiation slot area 511 is responsible for the antenna frequency of the first antenna radiation slot area 511, and the second antenna radiation slot area 512 is responsible for the antenna frequency of the second antenna radiation slot area 512, wherein the first antenna radiation slot area 511 and the second antenna radiation slot area 512 are responsible for different antenna frequencies, thereby realizing that one air-conditioning indoor unit is responsible for a plurality of different antenna frequencies, and improving the universality of the air-conditioning indoor unit.

Optionally, the antenna wafer 4 includes an antenna wafer main body 41, a first connection end 42 bent and extended from one end of the antenna wafer main body 41, and a second connection end 43 bent and extended from the other end of the antenna wafer main body 41. The antenna pellet body 41 extends from the ic board 31 to the display window 21, the first connection end 42 is connected to the ic board 31, and the second connection end 43 is connected to the metal panel 2. The antenna pressing sheet 4 is integrally formed by bending. Specifically, the antenna pellet 4 is Z-shaped, and both ends are used for contact connection.

Fig. 8 is a schematic view of the backside structure at a in fig. 2.

As shown in fig. 8, the first connection end 42 is substantially attached to the integrated circuit board 31. The first connection end 42 of one of the antenna patches 4 is attached to the lower side of the ground plane 311, and the first connection end 42 of the other antenna patch 4 is inserted into the notch 3111 of the ground plane 311 and connected to the feeding position 312, so that the two antenna patches 4 have a more compact structure.

Fig. 12 is a partial sectional view taken along the direction C in fig. 8.

As shown in fig. 12, the second connection end 43 of the antenna pellet 4 is attached to the inner wall of the metal panel 2 and extends from the antenna pellet body 41 to the metal panel 2.

Fig. 13 is a schematic structural view of an air conditioning indoor unit 110 according to the present disclosure.

Referring to fig. 13 again, in another embodiment, the metal panel 2 is formed with a bending edge 22 bending inward on the periphery of the display window 21, and the bending edge 22 is provided with a through hole 221, the shape of the through hole 221 is optionally rectangular, and is close to the end of the bending edge 22. The second connecting end 43 of the antenna wafer 4 is inserted into the through hole 221 of the bending edge 22, so that the antenna wafer 4 is reliably connected with the metal panel 2. Meanwhile, one end of the rear cover 35 of the display module 3 is attached to the second connection end 43, and the surface of the second connection end 43 is attached to the inner wall of the bent edge 22 of the metal panel 2, so that the second connection end 43 is abutted to the bent edge 22 under the jacking force of the rear cover 35, and the contact yield of the second connection end 43 and the metal panel 2 is improved

Fig. 14 is a schematic structural view of the antenna sheet 4 of the indoor unit 110 of the air conditioner of the present disclosure.

Referring to fig. 14, in another alternative embodiment, the first connection end 42 of the antenna pellet 4 is substantially U-shaped, and the second connection end 43 is substantially saw-tooth shaped. The integrated circuit board 31 is provided with an electrical pad 314 connected to the ground plane 311, and the first connection end 42 is inserted and fixed to the electrical pad 314, so that the first connection end 42 contacts the electrical pad 314 to electrically connect the first connection end 42 to the ground plane 311. The second connecting end 43 is inserted and fixed in the through hole 221 or abutted to the metal panel 2, so that point contact between the second connecting end 43 and the metal panel 2 can be realized, and meanwhile, the saw-tooth-shaped second connecting end 43 improves good conductivity with the metal panel 2, and the contact yield is improved.

Based on various feasible connection modes including but not limited to the above embodiments, the present solution forms a loop by connecting the two antenna pressing sheets 4, the metal panel 2, the ground plane 311, the feed potential 312 and the wireless communication circuit 33, wherein the two antenna pressing sheets 4, the ground plane 311 and the metal panel 2 together form an antenna radiator, the antenna radiator is used as a part of an antenna and integrally receives or transmits a wireless communication signal, so that the receiving range and the transmitting range of the wireless communication signal of the wireless communication circuit 33 are enlarged, the shielding effect of the metal panel 2 on the wireless communication signal is avoided, the interference of a metal environment on the wireless communication signal is reduced, and the stability of the wireless communication signal is further improved. Meanwhile, the metal panel 2 is used as a part of the antenna radiator, is mainly exposed out of the indoor unit of the air conditioner, can widely receive or transmit wireless communication signals to the outside, and has a large surface area of the metal panel 2.

Fig. 8 is a schematic view of the backside structure at a in fig. 2.

As shown in fig. 8, the two antenna pressing plates 4 are disposed along the lower side 313 of the ic board 31 at intervals to block the gap 5 to form an antenna radiation slot area 51, and the antenna radiation slot area 51 is substantially rectangular surrounded by four sides to form a sealing area. The antenna radiation slot region 51 is advantageous for improving the efficiency of the antenna radiator in receiving or transmitting wireless communication signals.

Fig. 10 is a schematic structural diagram of an antenna radiation slot region according to another embodiment of the present disclosure.

Further, as shown in fig. 10, the number of the antenna sheets 4 may be more than two. In a usage scenario where the number of the antenna patches 4 exceeds two, the antenna patches 4 are sequentially spaced along the lower side 313 of the integrated circuit board 31, so that the adjacent antenna patches 4 form one antenna radiation slot area 51 under the combination of the integrated circuit board 31 and the metal panel 2, and each antenna patch 4 can partition the gap 5 into a plurality of antenna radiation slot areas 51. The plurality of antenna radiation slot regions 51 are not limited to being arranged adjacently, and may be provided at intervals or arranged to face each other. The efficiency of receiving or transmitting wireless communication signals of the antenna radiating bodies is greatly realized through the plurality of antenna radiation slot regions 51, the wireless communication function failure of the indoor unit of the air conditioner caused by the damage of one antenna radiation slot region 51 is prevented, and the service life of the indoor unit of the air conditioner is prolonged.

The length of the antenna radiation slot region 51 is a ratio of the light speed to twice the antenna frequency, and the width of the antenna radiation slot region 51 is a distance between the outer edge of the ground plane 311 and the inner edge of the display window 21, and the distance is 1mm to 10 mm. The antenna frequency can be 2.4G, 5G or 2.4G +5G, and the like, and corresponding selection is carried out according to actual use scenes.

Optionally, the width of the antenna radiation slot area 5 is 2mm, i.e. the spacing is 2 mm. Since the ground plane 311 is flush with the lower side 313 of the integrated circuit board 31, the antenna wafer 4 can be easily butted against the ground plane 311, and in addition, the connection between the ground plane 311 and other components is shorter, and the edge position of the integrated circuit board 31 is fully utilized, and accordingly, the coverage area of the ground plane 311 can be reduced.

Fig. 8 is a schematic view of the backside structure at a in fig. 2. Fig. 15 is a schematic view of an antenna radiation slot area 51 of an indoor unit 110 of an air conditioner according to the present disclosure.

Referring to fig. 8 and 15, since the outer edge of the ground plane 311 and the inner edge of the display window 21 have a gap 5 therebetween, the gap 5 is generally annular. A part of the surface current of the metal panel 2 bypasses the gap 5 and the other part flows through the gap 5 in the original direction in the form of displacement current, a radio frequency electromagnetic field is excited on the gap 5 and radiates electromagnetic waves to a space, and the metal panel 2 is a part of an antenna radiator, so that the antenna radiator is an antenna for radiating or receiving electromagnetic waves based on the gap 5.

The gap 5 is blocked by two antenna patches 4, so that the adjacent antenna patches 4 form an antenna radiation slot area 51 under the combination of the integrated circuit board 31 and the metal panel 2. The antenna radiating slot area 51 is able to cut the current line, the interrupted current line will continue in the form of a displacement current, and the antenna radiating slot area 51 will thus be excited. For the antenna radiation slot region 51, the length of the antenna radiation slot region 51 is the ratio of the speed of light to twice the antenna frequency, and the width of the antenna radiation slot region 51 is the distance between the outer edge of the ground plane 311 and the inner edge of the display window 21. The antenna frequency may be 2.4G, 5G, 2.4G +5G, or the like. The wireless transmission technology is applied to the aspects of user life, the life style of the user can be changed, and the wireless transmission technology has the advantages of wide radiation range, short effect time and the like.

Fig. 16 is a dual schematic view of the antenna radiation slot area 51 of the air conditioning indoor unit 110 of the present disclosure.

Referring to fig. 16, the antenna radiator is part of an antenna, and the ideal antenna radiating slot area 51 is a straight slot open on an infinite, infinite thin ideal plane, which can be excited by a coaxial transmission line. The ideal antenna radiation slot area 51 has duality with the plate dipoles. According to the duality principle, the square function of the ideal antenna radiation slot area 51 is interchanged with the directivity function of a dipole of the same length in the E-plane and the H-plane.

Fig. 17 is a test chart of the standing wave ratio of the antenna radiator of the air conditioning indoor unit 110 according to the present disclosure based on the antenna radiation slot region 51. Fig. 18 is a table comparing the efficiency of the antenna radiator of the indoor unit 110 of the air conditioner according to the present disclosure based on the antenna radiation slot region 51.

Referring to fig. 17 and 18, when the widths of the antenna radiator and the antenna radiation slot area 51 are tested, it is found that the optimum width of the antenna radiation slot area 51 is 2 mm. No matter whether the antenna radiation slot area 51 is excited by any way, the antenna radiation slot area 51 only has tangential electric field intensity which is perpendicular to the long side of the antenna radiation slot area 51, and presents a standing wave distribution which is symmetrical up and down to the middle point of the antenna radiation slot area 51, and the standing wave ratio represents whether the antenna radiator and the radio wave transmitting station are matched. If the standing wave ratio is equal to 1, the electric wave transmitted to the antenna radiator is not reflected, and the antenna radiator is in an optimal state. Meanwhile, when the width of the antenna radiation slot area 51 is 2mm, the efficiency of the antenna radiator is the highest, and the efficiency is up to 10% compared with the original antenna.

While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (11)

1. An indoor unit of an air conditioner, comprising:

the metal panel is detachably covered on the outer surface of the indoor unit main body; the metal panel is provided with a display window;

the integrated circuit board is provided with a ground plane and a feed potential on the surface; the integrated circuit board is fixedly arranged on the inner side of the metal panel, and faces the display window; and

at least two antenna pads arranged at intervals along one side of the integrated circuit board; one end of one antenna pressing sheet is connected with the ground plane, and the other end of the antenna pressing sheet is connected with the metal panel; one end of the other antenna pressing sheet is connected with the feed potential, and the other end of the other antenna pressing sheet is connected with the metal panel, so that the two antenna pressing sheets, the integrated circuit board and the metal panel jointly form an antenna radiator.

2. The indoor unit of claim 1, wherein a gap is formed between an outer edge of the ground plane and an inner edge of the display window, and the two antenna patches are separated from the gap to form an antenna radiation slot region.

3. The indoor unit of claim 2, wherein the length of the antenna radiation slot area is a ratio of a speed of light to twice an antenna frequency, and the width of the antenna radiation slot area is a distance between an outer edge of the ground plane and an inner edge of the display window, and the distance is 1mm to 10 mm.

4. The indoor unit of claim 2, wherein the display window has a rectangular shape; the two antenna pressing sheets are arranged at intervals along one long edge of the rectangle, and the edge of the grounding layer facing the long edge is flush with the corresponding side edge outer contour of the integrated circuit board.

5. The indoor unit of claim 4, wherein the ground plane is rectangular and a gap is formed at the feed potential; and the antenna pressing sheet is inserted in the notch and connected with the feed position, and the wireless communication circuit is arranged corresponding to the area surrounded by the ground plane.

6. The indoor unit of claim 1, wherein the indoor unit further comprises a display screen; the display screen is connected with the integrated circuit board and faces the display window.

7. The indoor unit of claim 6, wherein the ic board has a wireless communication circuit electrically connected to the ground plane and the feeding potential, respectively; the display module further comprises a signal transmission line, one end of the signal transmission line is electrically connected with the wireless communication circuit, and the other end of the signal transmission line is used for being electrically connected to a main controller of the indoor unit main body.

8. The indoor unit of air conditioning as claimed in any one of claims 1 to 7, wherein the metal panel is formed with a bent edge bent inward on a peripheral side of the display window, the bent edge being provided with a through hole; the antenna pressing sheet is fixedly inserted into the through hole of the bending edge.

9. The indoor unit of air conditioning as claimed in any one of claims 1 to 7, wherein an end of the antenna pellet remote from the ic board is sandwiched between the display module and the metal panel so that the antenna pellet abuts against the metal panel.

10. The indoor unit of air conditioner according to any one of claims 1 to 7, wherein one end of the antenna pellet near the ic board is attached to the ground plane or the feeding potential on the ic board.

11. An air conditioner characterized by comprising the indoor unit of an air conditioner according to any one of claims 1 to 10 and an outdoor unit connected to the indoor unit of the air conditioner.

Images