CN105764255B - Air conditioner PCB board module, installation method and air conditioner - Google Patents

Abstract

The invention provides a PCB module of an air conditioner, an installation method and the air conditioner, wherein the PCB module comprises: the PCB board is provided with a PCB board body, a heating element arranged on the back surface of the PCB board body and other electronic elements arranged on the front surface of the PCB board body, and the PCB board body is provided with at least one first through hole; the refrigerant radiator and the electric system radiator are fixedly connected through a screw penetrating through the first through hole. Through having seted up first via hole on the PCB board body, realized can utilizing the screw to pass first via hole after-fixing electrical system radiator and refrigerant radiator on the PCB board body from the front for the PCB board is located the forefront of module, makes the electronic component on the PCB board be convenient for maintain, and especially the maintenance that is located the electronic component on PCB board front and change convenient operation are swift, increases the maintainability of PCB board and has improved the work efficiency of maintaining.

Description

Air conditioner PCB board module, installation method and air conditioner

technical field

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner module that uses a refrigerant to dissipate heat for a heating element of a PCB board, a method for installing the PCB board module, and an air conditioner with the PCB board module.

Background technique

The PCB board in the air conditioner is used to control the work of the air conditioner. The PCB board is equipped with electronic components, and the high-power electronic components become heating elements (such as controlling the driving components of the compressor), which generate higher temperatures during the working process. It is necessary to set a heat dissipation component to dissipate heat for the heating element to prevent the temperature of the element from exceeding its working temperature; at present, the use of refrigerant radiators to dissipate heat for heating elements is becoming more and more widely used, that is, the refrigerant of the air-conditioning refrigeration system flows through the refrigerant radiator. The refrigerant radiator dissipates heat to the heating element, which effectively controls the temperature rise of the heating element, ensures that the heating element works in a reliable working temperature range, and improves the reliability of the control.

The PCB board module includes a PCB board, a refrigerant radiator, and an electrical system radiator located between the refrigerant radiator and the PCB board. At present, when the PCB board module is installed and fixed, the commonly used method is: the refrigerant radiator is first connected to the refrigerant system through a long straight pipe, and the purpose of setting the long straight pipe is to make it have a certain amount of deformation by lengthening the length of the straight pipe; After the board and the electrical system radiator are installed, the refrigerant radiator connected to the refrigerant pipeline is moved to fit the electrical system radiator and fixed with screws. At present, since the refrigerant radiator is fixed at the rear, it is required that the power components and the electrical system radiator face outward, and other electronic components on the PCB board face inward, so as to facilitate the fixing between the refrigerant radiator and the electrical system radiator, and finally realize the heat dissipation of the refrigerant The heat transfer and cooling of the radiator of the electrical system. However, there are problems with such fixing: 1. Other electronic components are hidden on the back of the radiator of the electrical system, resulting in poor maintainability of the PCB board; 2. The welding process of the long straight pipe of the refrigerant radiator is complicated and the production efficiency is low; 3. The long straight pipeline of the refrigerant radiator is for the purpose of connecting with the radiator of the electrical system through pipeline deformation, and the long straight pipeline has insufficient limit and there is a hidden danger of free deformation.

Contents of the invention

The present invention aims at the problem that the PCB board is difficult to maintain in the prior art, and provides a PCB board module of an air conditioner, in which a first via hole is opened on the PCB board, so that the maintenance of the PCB board is simple and convenient.

In order to achieve the above-mentioned technical purpose, the present invention adopts the following technical solutions to realize:

A PCB board module of an air conditioner, comprising: a PCB board, the PCB board has a PCB board body, a heating element arranged on the back side of the PCB board body, and other electronic components arranged on the front side of the PCB board body, the PCB board body There is at least one first via hole; the electrical system radiator is arranged behind the PCB board; the refrigerant radiator is arranged behind the electrical system radiator; the refrigerant radiator and the electrical system radiator pass through Screws passing through the first via holes are fixed.

Further, the diameter of the first via hole is larger than the diameter of the nut of the screw.

Further, the heating element is fixed to the radiator of the electrical system.

Further, the PCB board module also includes a pre-positioning device fixed in the air conditioner, and the refrigerant radiator is located on the pre-positioning device.

Further, the pre-positioning device includes a vertical positioning plate and a bottom plate formed by bending and extending forward along the lower end of the vertical positioning plate.

Further, the pre-positioning device further includes a rib extending upward along the front end of the bottom plate.

Further, the width of the bottom plate is greater than the width of the refrigerant radiator.

Further, the pre-positioning device further includes a fixing portion bent and extended backward along the upper end of the positioning plate.

Further, the pre-positioning device adopts a steel plate punching and forming structure.

Further, at least one second via hole is opened on the PCB body for screws to pass through when the heating element is fixed to the heat sink of the electrical system.

Further, the PCB board module also includes an electrical box fixed in the air conditioner, and the PCB board is fixed on the electrical box.

Further, the PCB board module also includes an electrical box fixed in the air conditioner, and the electrical system radiator is fixed on the electrical box.

Further, the electrical box includes a rear plate and a frame fixed on the edge of the rear plate, and openings through which the overheating element protrudes are opened on the rear plate.

Further, a rearwardly extending boss is provided on the back of the rear plate, and the electrical system radiator is located in the area surrounded by the boss.

Based on the above-mentioned PCB board module of the air conditioner, the present invention also provides a method for installing the PCB board module of the air conditioner, which specifically includes the following steps:

A. Place the refrigerant radiator on the pre-positioning device;

B. Fixing the electrical system radiator to the electrical box;

C. Fixing the PCB board to the electrical box;

D. Using screws to pass through the first via holes on the PCB board to fix the electrical system radiator and the refrigerant radiator.

Further, after the step B, there is also a step B1: passing a screw through the second via hole on the PCB, and fixing the heat-generating components on the PCB to the heat sink of the electrical system.

Based on the above-mentioned PCB board module of the air conditioner, the present invention further provides an air conditioner having the above-mentioned PCB board module.

The PCB board module of an air conditioner provided by the present invention is provided with a first via hole on the PCB board body, so that the heat sink of the electrical system can be fixed from the front by using screws through the first via hole on the PCB board body With the refrigerant radiator, the PCB board is located at the front of the module, and from front to back there are the PCB board, the electrical system radiator and the refrigerant radiator, which makes the electronic components on the PCB easy to maintain, especially the electronic components located on the front of the PCB. The maintenance and replacement operation of components is convenient and fast, the maintainability of the PCB board is increased, and the working efficiency of maintenance is improved.

Other characteristics and advantages of the present invention will become clearer after reading the detailed description of the present invention in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the PCB board module of a kind of air conditioner proposed by the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of A-A direction in Fig. 1;

Fig. 3 is a schematic diagram of an enlarged structure of area B in Fig. 2;

FIG. 4 is a schematic diagram of an enlarged structure of region C in FIG. 2;

Fig. 5 is a structural schematic diagram of the PCB board in Fig. 1;

Fig. 6 is a schematic structural view of the side view of Fig. 5;

Fig. 7 is a schematic structural view of the radiator of the electrical system in Fig. 1;

Fig. 8 is a schematic structural view of the electrical box in Fig. 1;

Fig. 9 is a structural schematic diagram of a refrigerant radiator and a pre-positioning device;

Fig. 10 is a schematic structural view of the side view of Fig. 9;

Fig. 11 is a schematic diagram of the enlarged structure of the pre-positioning device in Fig. 10;

Fig. 12 is a top view structural schematic diagram of Fig. 11;

Fig. 13 is a flowchart of a method for installing a PCB board module of an air conditioner proposed by the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms are defined: the direction of the air conditioner close to the user during normal use is defined as "front", the direction opposite to the front is defined as "rear", and the side close to the front is defined as the front. The side away from the front is the back; and the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplification Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Refer to Fig. 1-Fig. 12, it is an embodiment of the PCB board module of a kind of air conditioner that the present invention proposes, is provided with PCB board module in the outdoor unit of air conditioner, and PCB board module is fixed in the casing of outdoor unit . In this embodiment, the PCB board module includes a PCB board 1 , an electrical system radiator 2 and a refrigerant radiator 3 arranged sequentially from front to back. Wherein, referring to shown in Fig. 6, PCB board 1 comprises PCB board body 11, is located at the heating element 12 of PCB board body 11 backsides, and other electronic components arranged on the front side of PCB board body 11, is set on PCB board body 11 There is at least one first via hole 111; as shown in Figure 2, the electrical system radiator 2 is arranged on the rear of the PCB board 1, that is, the heating element 12 located on the back side of the PCB board body 11 is adjacent to the electrical system radiator 2, so that The heat of the heating element 12 is transferred to the radiator 2 of the electrical system; as shown in Figure 3, in order to further accelerate the loss of heat, a refrigerant radiator 3 is arranged behind the radiator 2 of the electrical system, and the refrigerant of the refrigeration system of the air conditioner passes through the refrigerant The radiator 3 makes the cooling capacity of the refrigerant radiator 3 stronger, and can quickly take away the heat on the radiator 2 of the electrical system; as shown in Figure 3 and Figure 4, when the refrigerant radiator 3 is fixed, use the first screw 41 through the first through hole 111, so that the first screw 41 can reach the front of the electrical system radiator 2, and then rotate the first screw 41 to fix the electrical system radiator 2 and the refrigerant radiator 3.

In this embodiment, by opening the first via hole 111 on the PCB body 11, it is realized that the first screw 41 can be used to pass through the first via hole 111 on the PCB body 11 from the front or from the front to fix the electrical connection. The system radiator 2 and the refrigerant radiator 3 make the PCB board at the front of the module; from front to back are the PCB board, the electrical system radiator and the refrigerant radiator, which makes the electronic components on the PCB easy to maintain, especially in the The maintenance and replacement operation of the electronic components on the front of the PCB board is convenient and fast, the maintainability of the PCB board is increased, and the working efficiency of maintenance is improved.

In this embodiment, as shown in FIG. 3 and FIG. 4 , the diameter of the first via hole 111 is larger than the diameter of the nut of the first screw 41, that is, the first via hole 111 is used as a passage for the first screw 41 to be fixed. The screws 41 are fixed on the electrical system radiator 2 and the refrigerant radiator 3 . Three first via holes 111 arranged up and down are opened on the PCB board body 11 , so that the electrical system radiator 2 and the refrigerant radiator 3 are fixed by three first screws 41 . Since the components in this embodiment are mainly fixed by screws, for ease of description and clarity in the drawings, the screws fixed at different positions are distinguished and defined as the first screw, the second screw, the third screw, and so on. 7 and 9, in order to facilitate the fixing operation of the first screw 41, a first screw front hole 21 is provided on the electrical system radiator 2, and a first screw rear hole 31 is provided on the refrigerant radiator 3. The stud of the first screw 41 is located in the first screw front hole 21 and the first screw rear hole 31 .

In this embodiment, referring to Fig. 2-shown in Fig. 4, in order to speed up the heat transfer between the heating element 12 and the electrical system radiator 2, it is necessary to increase the contact area between the heating element 12 and the electrical system radiator 2, and the heating Fix between the element 12 and the radiator 2 of the electrical system; see FIG. 5 , in order to facilitate the fixing operation between the heating element 12 and the radiator 2 of the electrical system, four second via holes 112 are provided on the PCB body 11 . When the two are fixed, the second screw 42 is used to pass through the second through hole 112 to fix the second screw 42 on the heating element 12 and the electrical system radiator 2 . By fixing the heating element 12 and the electrical system radiator 2, the heating element 12 and the electrical system radiator 2 are closely attached, which is conducive to the heat emitted by the heating element 12 being transferred to the electrical system radiator 2, and the heating element is improved. The heat transfer efficiency between 12 and the electrical system radiator 2 accelerates the dissipation of heat. And by opening the second via hole 112 on the PCB board body 11, the fixing operation between the heating element 12 and the electrical system radiator 2 is simple, and the second screw 42 is passed through the second via with a screwdriver from the front of the PCB board module. After hole 112, be fixed on heating element 12 and electrical system radiator 2 and get final product. In order to facilitate the fixing operation of the second screw 42, a second screw front hole 121 is provided on the heating element 12, a second screw rear hole 22 is provided on the electrical system radiator 2, and the stud of the second screw 42 is located at the second The screw front hole 121 and the second screw rear hole 22 are inside.

In this embodiment, as shown in Fig. 1-Fig. 4, the PCB board module also includes an electrical box 6, and the electrical box 6 is fixed in the casing of the outdoor unit, and the PCB board 1 is fixed on the electrical box at four angles by third screws 43. On the box 6, in order to facilitate the fixing operation of the third screw 43, a third screw front hole 113 is provided on the PCB body 11, and a third screw rear hole 613 is provided on the rear plate 61 of the electrical box 6. The third screw The studs of 43 are located in the third screw front hole 113 and the third screw rear hole 613 . The electrical system radiator 2 is fixed on the electrical box 6 by the fourth screw 44; the fourth screw front hole 614 is provided on the rear plate 61 of the electrical box 6, and the fourth screw rear hole is provided on the electrical system radiator 2 23 . The stud of the fourth screw 44 is located in the fourth screw front hole 614 and the fourth screw rear hole 23 . In this way, both the PCB board and the electrical system radiator 2 are fixed on the electrical box 6, and the refrigerant radiator 3 is fixed on the electrical system radiator 2, so that the PCB board module forms a whole, and is fixed in the outdoor unit through the electrical box 6 to realize Fixing of PCB board modules.

In this embodiment, as shown in FIG. 3 , FIG. 4 and FIG. 8 , the electrical system radiator 2 is fixed on the back of the electrical box 6 , and the PCB board 1 is fixed inside the electrical box 6 . The electrical box 6 includes a rear plate 61 and a frame 62 fixed on the edge of the rear plate 61, and the rear plate 61 is provided with a through opening 611 through which the overheating element 12 protrudes, so that the overheating element fixed on the PCB board 1 in the electrical box 6 12 is located in the opening 611 so that the overheating element 12 is in contact with the electrical system radiator 2 fixed on the back of the electrical box 6 . A boss 612 extending backward is provided on the back of the rear plate 61 , and the electrical system radiator 2 is located in the area surrounded by the boss 612 , that is, the boss 612 plays a role in positioning and protecting the electrical system radiator 2 .

In this embodiment, as shown in Fig. 2, Fig. 4 and Fig. 10, the PCB board module also includes a pre-positioning device 5 fixed in the casing of the outdoor unit of the air conditioner, and fixed between the refrigerant radiator 3 and the electrical system radiator 2 Before placing the refrigerant radiator 3 on the pre-positioning device, it plays the role of initial positioning; so that when the refrigerant radiator 3 and the electrical system radiator 2 are fixed, the position of the refrigerant radiator 3 is relatively stable, and only a small amount of movement is required. The displacement can be fixed with the radiator 2 of the electrical system, so that on the one hand, the length of the connecting pipeline between the refrigerant radiator 3 and the refrigerant system of the air conditioning system can be designed to be shorter, and there is no need to reserve the connecting pipeline for the installation of the refrigerant radiator 3 The length of time to move makes the position of the connecting pipeline of the refrigerant radiator 3 stable and reliable, and the welding is convenient to improve production efficiency; on the other hand, the small movement during installation also protects the connecting pipeline better.

Referring to Figures 10-12, the structure of the pre-positioning device 5 is specifically described. In this embodiment, the pre-positioning device 5 adopts a steel plate stamping and forming structure, and the pre-positioning device 5 includes a vertical positioning plate 52, which is positioned vertically The lower end of the plate 52 is bent to form a bottom plate 53 extending forward, and the fixing portion 51 is bent and extended backward along the upper end of the positioning plate 52 . The pre-positioning device 5 is fixed on the casing of the outdoor unit of the air conditioner through the fixing part 51. After the refrigerant radiator 3 is connected to the refrigeration system through the connecting pipeline, it is placed on the pre-positioning device 5. The bottom plate 53 acts as a guide for the refrigerant radiator. 3, the positioning plate 52 acts as a limit to prevent the refrigerant radiator 3 from moving backward.

In order to increase the limiting effect on the forward movement of the refrigerant radiator 3 on the pre-positioning device 5, an upwardly extending rib 54 is provided at the front end of the base plate 53. Since the refrigerant radiator 3 is to be installed behind the electrical system radiator 2, After the refrigerant radiator 3 and the electrical system radiator 2 are fixed, the limit function of the rib 54 is not needed, so the height of the rib 54 is small. In order to realize the adjustability of the refrigerant radiator 3 when it is fixed with the electrical system radiator 2 after pre-positioning, the width of the bottom plate 53 is set to be greater than the width of the refrigerant radiator 3, and by setting the rib 54, the refrigerant radiator 3 only It can move within the width of the bottom plate 53, that is, between the positioning plate 52 and the rib 54, so that the movement of the refrigerant radiator 3 is small when it is installed and fixed, which is conducive to increasing the stability of the connecting pipeline of the refrigerant radiator 3 and reliability.

A notch 55 is opened in the pre-positioning device 5, and the bottom of the refrigerant radiator 3 has two protruding joints 32 connected with the air-conditioning and refrigeration system. The connecting pipeline is not shown in the figure.

Referring to Fig. 13, the installation method of the PCB board module of the air conditioner in this embodiment is described, which specifically includes the following steps:

A. Connect the refrigerant radiator to the refrigeration system of the air conditioner through the connecting pipeline, and then place the refrigerant radiator on the pre-positioning device 5 .

B. Fix the radiator 2 of the electrical system to the electrical box 6 .

Specifically, first place the electrical system radiator 2 behind the electrical box 6, and place it in the area surrounded by the boss 612, then operate and fix it from the front, and use the fourth screw 44 to fix the electrical box 6 and the electrical system radiator 2 .

B1. Pass the second screw 42 through the second through hole 112 on the PCB 1 , and fix the heating element 12 on the PCB 1 on the radiator 2 of the electrical system.

Specifically, the PCB board 1 is approached to the electrical box 6, and the heating element 12 on the back of the PCB board 1 is located in the opening 611, and the second screw 42 is passed through the second through hole 112, so that the second screw front hole 121 and The rear holes 22 of the second screws are aligned, and the second screws 42 are fastened so that the heating element 12 is fixed to the radiator 2 of the electrical system.

C. Fix the PCB board 1 to the electrical box 6 .

Specifically, attach the PCB board body 11 to the front or front end of the rear board 61, connect the third screw front hole 113 and the third screw rear hole 613, and use the third screw 43 to connect the PCB board 1 and the electrical box. 6 fixed.

D. Use the first screw 41 to pass through the first through hole 111 on the PCB 1 to fix the electrical system radiator 2 and the refrigerant radiator 3 .

Specifically, the first screw 41 passes through the first through hole 111 , and the first screw 41 is fixed in the first screw front hole 21 and the first screw rear hole 31 , so that the electrical system radiator 2 and the refrigerant radiator 3 are fixed.

E. Finally, fix the electrical box 6 on the casing of the outdoor unit of the air conditioner.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (8)

1. A kind of PCB board module of air conditioner, it is characterized in that, comprising: PCB board, the PCB board has a PCB board body, a heating element located at the back of the PCB board body, and other electronic components located at the front of the PCB board body, and at least one first via hole is provided on the PCB board body; An electrical system heat sink is arranged behind the PCB board; The refrigerant radiator is arranged behind the electrical system radiator; the refrigerant radiator and the electrical system radiator are connected and fixed by screws passing through the first through hole; The PCB board module also includes a pre-positioning device fixed in the air conditioner, the refrigerant radiator is located on the pre-positioning device; the pre-positioning device includes a vertical positioning plate, bent along the lower end of the vertical positioning plate The bottom plate is formed by extending forward, and the fixing portion is bent and extended backward along the upper end of the positioning plate. 2. The PCB board module according to claim 1, wherein the pre-positioning device further comprises a rib extending upward along the front end of the bottom plate. 3. The PCB board module according to claim 1 or 2, characterized in that, the PCB board module also includes an electrical box fixed in the air conditioner, the PCB board is fixed on the electrical box, and the electrical box is fixed on the electrical box. The system heat sink is secured to the electrical box. 4. The PCB board module according to claim 1 or 2, wherein the heating element is fixed to the heat sink of the electrical system. 5. The PCB board module according to claim 1 or 2, wherein the PCB board body is provided with at least one second via hole for screws to pass through when the heating element is fixed to the heat sink of the electrical system . 6. A method for installing the PCB board module of an air conditioner according to any one of claims 1 to 5, the PCB board module of the air conditioner also includes an electrical box, wherein the installation method specifically includes the following step: A. Place the refrigerant radiator on the pre-positioning device; B. Fix the radiator of the electrical system to the electrical box; C. Fixing the PCB board to the electrical box; D. Using screws to pass through the first via holes on the PCB board to fix the electrical system radiator and the refrigerant radiator. 7. The installation method according to claim 6, wherein the PCB body is provided with at least one second via hole through which the screw passes when the heating element is fixed to the heat sink of the electrical system; After B, there is also a step B1: passing screws through the second via holes on the PCB, and fixing the heating components on the PCB to the heat sink of the electrical system. 8. An air conditioner, comprising an indoor unit and an outdoor unit, characterized in that the PCB board module according to any one of claims 1 to 5 is arranged in the outdoor unit.