Variable frequency drive board refrigerant cooling device

Abstract

The utility model discloses a refrigerant cooling device for a variable-frequency drive board. The refrigerant cooling device comprises a variable-frequency board, a cooling pipe is arranged on the front surface of the frequency conversion plate, and the two ends of the cooling pipe extend to the outside of the frequency conversion plate; a temperature sensor is mounted on the rear surface of the frequency conversion plate; acquiring a temperature value of the surface of the frequency conversion board through a temperature sensor; the mounting plate is arranged on the front surface of the frequency conversion plate and is used for limiting and mounting the cooling pipe on the frequency conversion plate; the air conditioning unit is connected with the two ends of the cooling pipe, and a circulating cooling passage is formed between the air conditioning unit and the cooling pipe; according to the utility model, a refrigerating system of the air conditioning unit is utilized, and the original aluminum alloy radiating block of the frequency conversion plate is changed into the cooling pipe for cooling, so that the temperature of the frequency conversion plate is effectively reduced, the service life of the frequency conversion plate is prolonged, the normal operation of the unit is ensured, and the safe operation reliability of the system is also improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the central air conditioning, split air conditioning operation technical field of thermal power plant, concretely relates to a kind of frequency conversion drive board refrigerant cooling device. BACKGROUND

[0002] Under the current social trend of energy saving and emission reduction, air conditioning equipment is increasingly widely adopted frequency conversion energy-saving technology. However, with the continuous expansion of its application range, the problems encountered in the operation process of related equipment also increase, among which the damage of electric control board due to high temperature is particularly prominent.

[0003] Specifically, the frequency conversion drive board frequently encounters damage failure when used in summer, and the same problem occurs in multiple devices. After investigation, it is found that the fault is solved after replacing the frequency conversion drive board. Further observation shows that in the shutdown state, the temperature of the frequency conversion board is in the normal range; but once the device starts to operate, its temperature rises rapidly, especially in the afternoon, reaches the peak, and is difficult to reduce for a long time, mainly because the frequency conversion drive board generates a large amount of heat when working, and the surface temperature is high in summer, while the heat dissipation capacity of the matched aluminum alloy heat dissipation block is insufficient, so that the heat cannot be effectively dissipated, thereby causing the above-mentioned failure problem. SUMMARY

[0004] The utility model aims at providing a kind of frequency conversion drive board refrigerant cooling device to solve the high temperature damage of electric control board frequently mentioned in the above background technology, especially in summer, due to the large heat generation of frequency conversion drive board and insufficient heat dissipation, which easily leads to the high temperature damage of electric control board.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of frequency conversion drive board refrigerant cooling device, including frequency conversion board;The front surface of the frequency conversion board is provided with a cooling pipe, both ends of the cooling pipe extend to the outside of the frequency conversion board;And temperature sensor is installed on the rear surface of the frequency conversion board;The temperature value of the surface of the frequency conversion board is obtained by temperature sensor;It also includes: mounting plate, which is arranged on the front surface of the frequency conversion board and limits the installation of the cooling pipe on the frequency conversion board;Air conditioning unit is connected with both ends of the cooling pipe, and a circulating cooling passage is formed between the air conditioning unit and the cooling pipe. An electronic expansion valve is also installed between the air conditioning unit and the cooling pipe, which can start and stop the cooling by opening and closing the electronic expansion valve. In use, the temperature of the surface of the frequency conversion board is detected by the temperature sensor, and when the temperature exceeds the threshold value, the temperature sensor will start the electronic expansion valve. At this time, the electronic expansion valve is opened, and then the cooling pipe is cooled by the air conditioning unit, so as to realize the cooling of the frequency conversion board by the cooling pipe in low temperature state.

[0006] Preferably, copper pipes are connected between both ends of the cooling pipe and the air conditioning unit, and the electronic expansion valve is installed on the copper pipe at the inlet position of the cooling pipe.

[0007] Preferably, the cooling pipes are arranged in a multi-segment curved shape on the front surface of the frequency converter plate.

[0008] Preferably, the front surface of the inverter board is symmetrically provided with slide rods at the upper and lower end faces, and end blocks are fixed at both ends of the slide rods. The end blocks are fixed on the front surface of the inverter board, and the mounting plate is slidably disposed on the slide rods, so as to limit the cooling pipe according to the actual installation requirements.

[0009] Preferably, the two ends of the mounting plate are bent to form connecting hooks, which are engaged with the slide rod, thereby realizing the installation of the mounting plate and the slide rod, and ensuring that the normal sliding of the two is not affected.

[0010] Preferably, the mounting plate is broken in the middle, and a connecting groove is provided on the opposite end face of the broken section. A tension spring is fixed in the middle of the connecting groove. When it is necessary to separate the mounting plate, the segmented mounting plate is pulled to both sides, so that the connecting hook disengages from the slide rod.

[0011] Preferably, the middle part of the mounting plate is curved in multiple sections, and the mounting plate is attached to the outer surface of the cooling pipe to achieve installation and positioning of the cooling pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the original aluminum alloy heat sink of the inverter board is modified into a cooling pipe by utilizing the refrigeration system of the air conditioning unit itself. This effectively reduces the temperature of the inverter board, extends its service life, ensures the normal operation of the unit, and also improves the reliability of the system's safe operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the connection between the frequency converter board and the cooling pipe of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged view of region A in the middle;

[0017] Figure 4 This utility model Figure 2 A magnified view of region B in the middle.

[0018] In the picture:

[0019] 100. Inverter board; 101. Cooling pipe; 102. Electronic expansion valve; 103. Temperature sensor; 104. Copper pipe; 105. End block; 106. Slide rod;

[0020] 200. Mounting plate; 201. Connecting hook; 202. Connecting groove; 203. Tension spring;

[0021] 300. Air conditioning unit. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution: a refrigerant cooling device for a frequency converter drive board, comprising...

[0024] Variable frequency board 100;

[0025] A cooling pipe 101 is provided on the front surface of the inverter board 100, and both ends of the cooling pipe 101 extend to the outside of the inverter board 100; while a temperature sensor 103 is installed on the rear surface of the inverter board 100; the temperature value of the surface of the inverter board 100 is obtained through the temperature sensor 103.

[0026] Also includes:

[0027] Mounting plate 200 is disposed on the front surface of inverter board 100 and is mounted on inverter board 100 to limit the cooling pipe 101;

[0028] The air conditioning unit 300 is connected to both ends of the cooling pipe 101, forming a circulating cooling path between the air conditioning unit 300 and the cooling pipe 101. An electronic expansion valve 102 is also installed between the air conditioning unit 300 and the cooling pipe 101. The cooling can be started and stopped by opening and closing the electronic expansion valve 102. During use, the surface temperature of the inverter board 100 is detected by the temperature sensor 103. When the temperature exceeds the threshold, the temperature sensor 103 will activate the electronic expansion valve 102. At this time, the electronic expansion valve 102 will open, and then the air conditioning unit 300 will cool the cooling pipe 101. The inverter board 100 is cooled by the low temperature of the cooling pipe 101.

[0029] In this embodiment, preferably, both ends of the cooling pipe 101 are connected to the air conditioning unit 300 by copper pipes 104, and the electronic expansion valve 102 is installed on the copper pipe 104 at the inlet position of the cooling pipe 101.

[0030] In this embodiment, preferably, the cooling pipe 101 is arranged in a multi-segment curved shape on the front surface of the frequency converter board 100.

[0031] In this embodiment, preferably, slide rods 106 are symmetrically arranged at the upper and lower end faces of the front surface of the inverter board 100, and end blocks 105 are fixed at both ends of the slide rods 106. The end blocks 105 are fixed on the front surface of the inverter board 100, and the mounting plate 200 is slidably arranged on the slide rods 106, so that the cooling pipe 101 can be limited according to the actual installation requirements.

[0032] In this embodiment, preferably, the two ends of the mounting plate 200 are bent to form connecting hooks 201, which are engaged with the slide rod 106, thereby realizing the installation of the mounting plate 200 and the slide rod 106, and ensuring that the normal sliding of the two is not affected.

[0033] In this embodiment, preferably, the middle position of the mounting plate 200 is broken, and a connecting groove 202 is provided on the opposite end face of the broken section. A tension spring 203 is fixed in the middle of the connecting groove 202. When it is necessary to separate the mounting plate 200, the segmented mounting plate 200 is pulled to both sides, so that the connecting hook 201 disengages from the slide rod 106.

[0034] In this embodiment, preferably, the middle part of the mounting plate 200 is multi-segmented and curved. The mounting plate 200 is attached to the outer surface of the cooling pipe 101 to achieve installation limit of the cooling pipe 101.

[0035] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A refrigerant cooling device for a variable frequency drive board, comprising: Inverter board (100); Its features are: A cooling pipe (101) is provided on the front surface of the frequency converter board (100), and both ends of the cooling pipe (101) extend to the outside of the frequency converter board (100); while a temperature sensor (103) is installed on the rear surface of the frequency converter board (100). Also includes: A mounting plate (200) is disposed on the front surface of the inverter board (100) and is mounted on the inverter board (100) with the cooling pipe (101) in a limiting position; An air conditioning unit (300) is connected to both ends of the cooling pipe (101), and a circulating cooling path is formed between the air conditioning unit (300) and the cooling pipe (101). An electronic expansion valve (102) is also installed between the air conditioning unit (300) and the cooling pipe (101).

2. The refrigerant cooling device for a variable frequency drive board according to claim 1, characterized in that: Both ends of the cooling pipe (101) are connected to the air conditioning unit (300) by copper pipes (104), and the electronic expansion valve (102) is installed on the copper pipe (104) at the inlet of the cooling pipe (101).

3. The refrigerant cooling device for a variable frequency drive board according to claim 2, characterized in that: The cooling pipe (101) is arranged in a multi-segment curved shape on the front surface of the frequency converter plate (100).

4. The refrigerant cooling device for a variable frequency drive board according to claim 1, characterized in that: The inverter board (100) has symmetrically arranged slide rods (106) on the upper and lower end faces of the front surface. End blocks (105) are fixed at both ends of the slide rods (106). The end blocks (105) are fixed on the front surface of the inverter board (100). The mounting plate (200) is slidably arranged on the slide rods (106).

5. The refrigerant cooling device for a variable frequency drive board according to claim 4, characterized in that: The mounting plate (200) has connecting hooks (201) formed at both ends by bending, and the connecting hooks (201) are engaged with the slide rod (106).

6. The refrigerant cooling device for a variable frequency drive board according to claim 5, characterized in that: The mounting plate (200) is broken in the middle, and a connecting groove (202) is provided on the opposite end face of the broken part. A tension spring (203) is fixed in the middle of the connecting groove (202).

7. The refrigerant cooling device for a variable frequency drive board according to claim 6, characterized in that: The mounting plate (200) has a multi-segment curved shape in the middle, and the mounting plate (200) is attached to the outer surface of the cooling pipe (101).

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