Heat dissipation device, general frequency converter and variable frequency air conditioner

Abstract

The utility model discloses a heat dissipation device, and relates to the technical field of frequency converter heat dissipation. The evaporation piece is tightly and fixedly attached to the heat dissipation piece; the condensation part is arranged on one side of the evaporation part; the heat transfer part is arranged between the evaporation part and the condensation part so that heat exchange can be conducted between the evaporation part and the condensation part in a circulating and reciprocating mode through a refrigerant arranged in the heat transfer part; the utility model further provides the general frequency converter and the variable frequency air conditioner, the heat dissipation pieces are installed among the heating ends of the heating pieces of the general frequency converter in the variable frequency air conditioner, and refrigerants in the heat dissipation pieces conduct heat exchange between the evaporation piece and the condensation piece in a circulating and reciprocating mode through the heat transfer pieces so as to conduct heat dissipation on the general frequency converter. The whole device is simple in structure and convenient to install, an extra refrigerant circulation power device does not need to be added, noise and cost of the heat dissipation device are reduced, a good solution is provided for effective heat dissipation of the general frequency converter, and the operation reliability of the general frequency converter and the variable frequency air conditioner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inverter heat dissipation, in particular to a heat dissipation device, a universal inverter and a variable frequency air conditioner. Background Art

[0002] A general-purpose inverter is an inverter that can be applied to a variety of loads. It is widely used to drive various DC variable-frequency motors, DC variable-frequency compressors, DC variable-frequency water pumps and other DC variable-frequency power equipment. General-purpose inverters are often equipped with a large number of high-power heating devices. In order to ensure the normal use of the general-purpose inverter, a heat dissipation structure will be set on the general-purpose inverter to facilitate heat exchange with the high-power heating devices on the general-purpose inverter to reduce heat.

[0003] In the Chinese utility model patent with authorization announcement number CN205957345U, a heat dissipation device for an air conditioner inverter and an inverter air conditioner are disclosed. The device drives the cooling liquid to circulate in the radiator base, so that the heat of the heating area on the small area of ​​the electric control panel is quickly and evenly distributed on the radiator base, and uses the fins and the forced air cooling of the air conditioner outdoor unit fan for heat exchange, thereby improving the rapid cooling capability of the air conditioner in high temperature weather.

[0004] Although the above patent can dissipate heat for the inverter, it adds additional fluid drivers and various fluid pipelines, which makes the structure of the heat dissipation device more complicated and increases the cost of the heat dissipation device. At the same time, during the operation of the above heat dissipation device, the fluid driver will also generate certain noise. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a heat dissipation device, a universal frequency converter and a frequency conversion air conditioner, which solve the problems of complex structure, high cost and noise of the heat dissipation device in the prior art.

[0006] A heat dissipation device, comprising:

[0007] Heat sink;

[0008] The evaporating element is tightly fixed and fitted with the heat dissipating element;

[0009] a condensing element disposed on one side of the evaporating element; and

[0010] The heat transfer element is arranged between the evaporation element and the condensation element so as to perform heat exchange between the evaporation element and the condensation element through the reciprocating circulation of the refrigerant arranged in the heat transfer element.

[0011] Compared with the prior art, the utility model has the following beneficial effects: when in use, the heat sink is installed between the heating ends of several heating elements of the universal inverter, and then the refrigerant inside it is circulated back and forth between the evaporating element and the condensing element through the heat transfer element to exchange heat, so as to achieve the purpose of dissipating heat for the universal inverter; and the entire device has a simple structure and is easy to install, without the need to add an additional refrigerant circulation power device, which reduces the noise and cost of the heat sink, provides a good solution for the effective heat dissipation of the universal inverter, and improves the operating reliability of the universal inverter.

[0012] Preferably, the evaporating element comprises a heat pipe evaporator which is tightly fixed to the heat transfer element.

[0013] Preferably, the condensing element comprises a heat pipe condenser arranged on one side of the heat pipe evaporator.

[0014] Preferably, the heat pipe condenser is located directly above the heat pipe evaporator, the heat transfer element includes a circulating heat pipe vertically fixed and penetrating between the heat pipe evaporator and the heat pipe condenser, the circulating heat pipe is a waist-shaped ring structure, and the refrigerant is located in the circulating heat pipe.

[0015] Preferably, the heat transfer element comprises a liquid wick heat pipe fixedly disposed through the heat pipe evaporator and the heat pipe condenser, and the refrigerant is located in the liquid wick heat pipe.

[0016] Preferably, the heat sink comprises a frequency converter heat sink, and the heat pipe evaporator is tightly fixed to a side wall of the frequency converter heat sink.

[0017] Preferably, a heat dissipation fan is provided on one side of the heat pipe condenser.

[0018] The utility model also provides a universal frequency converter, comprising a frequency converter mainboard, a plurality of heating elements arranged on the frequency converter mainboard, and a heat dissipation device installed between the heating ends of the plurality of heating elements.

[0019] The utility model also provides a variable frequency air conditioner, comprising the universal frequency converter.

[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of an embodiment of the utility model.

[0022] Figure 2 It is a front view of another embodiment of the utility model.

[0023] Figure 3 for Figure 2 Front view of the middle wick heat pipe in another installation state.

[0024] Figure 4 for Figure 2 Front view of the middle wick heat pipe in the third installation state.

[0025] The numbers in the figure are: 1. Inverter mainboard; 2. Heat generating component; 3. Inverter heat sink; 4. Heat pipe evaporator; 5. Heat pipe condenser; 6. Circulating heat pipe; 7. Liquid wick heat pipe; 8. Cooling fan. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0027] like Figure 1-4 As shown, an embodiment of the utility model provides a heat dissipation device, including: a heat dissipation element; an evaporation element, which is tightly fixed to the heat dissipation element; a condensation element, which is arranged on one side of the evaporation element; and a heat transfer element, which is arranged between the evaporation element and the condensation element, so as to perform heat exchange between the evaporation element and the condensation element through the reciprocating circulation of a refrigerant arranged in the heat transfer element.

[0028] The heat sink is installed between the heating ends of several heating elements 2 of the universal inverter, and then the refrigerant inside it is circulated back and forth between the evaporating element and the condensing element through the heat transfer element to exchange heat, so as to achieve the purpose of cooling the universal inverter; and the whole device has a simple structure and is easy to install. There is no need to add an additional refrigerant circulation power device, which reduces the noise and cost of the heat sink, provides a good solution for the effective heat dissipation of the universal inverter, and improves the operating reliability of the universal inverter.

[0029] like Figure 1-4 As shown, according to another embodiment of the utility model, the heat dissipation device further optimizes the evaporation component and the condensation component included therein, the evaporation component includes a heat pipe evaporator 4 tightly fixed to the heat transfer component; the condensation component includes a heat pipe condenser 5 arranged on one side of the heat pipe evaporator 4.

[0030] like Figure 1As shown, according to another embodiment of the utility model, the heat dissipation device further optimizes the heat transfer element it includes, the heat pipe condenser 5 is located directly above the heat pipe evaporator 4, and the heat transfer element includes a circulating heat pipe 6 that is vertically fixed and penetrates between the heat pipe evaporator 4 and the heat pipe condenser 5, the circulating heat pipe 6 is a waist-shaped ring structure, and the refrigerant is located in the circulating heat pipe 6; after the heat is transferred from the heat dissipation element to the heat pipe evaporator 4, the liquid refrigerant in the circulating heat pipe 6 absorbs heat after passing through the heat pipe evaporator 4 and becomes a gaseous refrigerant. Since the heat pipe condenser 5 is located directly above the heat pipe evaporator 4, the gaseous refrigerant rises along the circulating heat pipe 6 to the heat pipe condenser 5 to be condensed and becomes a liquid refrigerant again. Subsequently, the liquid refrigerant flows to the heat pipe evaporator 4 again under the action of its own gravity to absorb heat, thereby forming a cyclic heat exchange process.

[0031] like Figure 2-4 As shown, according to another embodiment of the utility model, the heat dissipation device further optimizes the heat transfer element included therein, wherein the heat transfer element includes a liquid wick heat pipe 7 fixedly arranged between the heat pipe evaporator 4 and the heat pipe condenser 5, and the refrigerant is located in the liquid wick heat pipe 7; wherein the liquid wick heat pipe 7 is composed of a tube shell, a liquid wick located in the tube shell, and end covers at both ends of the tube shell, and the liquid wick heat pipe 7 is filled with refrigerant. When one end of the liquid wick heat pipe 7 is heated, the refrigerant evaporates and vaporizes, and the gaseous refrigerant The refrigerant flows to the other end of the liquid wick heat pipe 7 under the action of the pressure difference in the tube shell and releases heat to condense into liquid refrigerant. The liquid refrigerant flows back to the heated end of the liquid wick heat pipe 7 under the capillary force of the liquid wick. Compared with the above-mentioned circulating heat pipe 6, the relative position and angle of the heated end and the condensing end of the liquid wick heat pipe 7 are more flexible, and the liquid wick heat pipe 7 can also be bent according to actual conditions, without restricting the position of the heat pipe condenser 5 to be directly above the heat pipe evaporator 4.

[0032] like Figure 1-4 As shown, according to another embodiment of the utility model, the heat dissipation device further optimizes the heat dissipation element included therein, and the heat dissipation element includes an inverter heat sink 3, and the heat pipe evaporator 4 is tightly fixed to the side wall of the inverter heat sink 3, which can quickly transfer the heat on the inverter heat sink 3, and the connection method between the heat pipe evaporator 4 and the inverter heat sink 3 can be bolted or glued, as long as the two can be tightly fixed and fitted; at the same time, the evaporation temperature of the refrigerant is always greater than the ambient temperature, thereby avoiding the possibility of being lower than the dew point temperature, and the risk of condensation on the inverter heat sink 3 can be avoided.

[0033] like Figure 1-4As shown, according to another embodiment of the utility model, in the heat dissipation device, preferably, a heat dissipation fan 8 is provided on one side of the heat pipe condenser 5. Through the forced convection effect of the heat dissipation fan 8, the gaseous refrigerant and cold air in the circulating heat pipe 6 or the liquid-absorbing core heat pipe 7 can undergo rapid heat exchange to achieve rapid condensation.

[0034] like Figure 1-4 As shown, the utility model also provides a universal inverter, including an inverter mainboard 1, a plurality of heating elements 2 arranged on the inverter mainboard 1, and a heat dissipation device installed between the heating ends of the plurality of heating elements 2; through the heat dissipation device, the universal inverter can be quickly and effectively dissipated, and the overall structure of the heat dissipation device is simple and easy to install. At the same time, the circulating heat pipe 6 or the liquid wick heat pipe 7 is well sealed, which can avoid refrigerant leakage and maintain the stability of the overall operation of the heat dissipation device, so as to ensure and improve the operating reliability and stability of the universal inverter, and the specific internal structure and use principle of the universal inverter are all existing technologies, which are not described in detail here.

[0035] The utility model also provides a variable frequency air conditioner, including the universal frequency converter, which avoids using the refrigerant of the air conditioning system itself to dissipate heat for the universal frequency converter, can effectively dissipate heat for the universal frequency converter of the variable frequency air conditioner, and improves the reliability of air conditioning operation.

[0036] The use principle of the utility model is as follows: when the utility model is used, the inverter heat sink 3 is fixedly installed between the heating ends of several heating elements 2 of the general inverter, and then the heat pipe evaporator 4 is tightly fixed and fitted to the side wall of the inverter heat sink 3 away from the several heating elements 2. If a circulating heat pipe 6 is selected, the heat pipe condenser 5 needs to be arranged directly above the heat pipe evaporator 4. When heat is dissipated, the liquid refrigerant in the circulating heat pipe 6 absorbs heat after passing through the heat pipe evaporator 4 and becomes a gaseous refrigerant. The gaseous refrigerant rises along the circulating heat pipe 6 to the heat pipe condenser 5 for condensation and becomes a liquid refrigerant again. Then, the liquid refrigerant flows to the heat pipe evaporator 4 again under the action of its own gravity to absorb heat. A cyclic heat exchange process is formed; if a liquid wick heat pipe 7 is selected, there is no need to consider the positional relationship between the heat pipe condenser 5 and the heat pipe evaporator 4. When heat is dissipated, the refrigerant evaporates and vaporizes when one end of the liquid wick heat pipe 7 is heated, and the gaseous refrigerant flows to the other end of the liquid wick heat pipe 7 under the action of the pressure difference in the tube shell and releases heat to condense into liquid refrigerant. The liquid refrigerant flows back to the heated end of the liquid wick heat pipe 7 under the capillary force of the liquid wick, thereby forming a cyclic heat exchange process; and a heat dissipation fan 8 is installed at the heat pipe condenser 5. Through the forced convection effect of the heat dissipation fan 8, the gaseous refrigerant and the cold air in the circulating heat pipe 6 or the liquid wick heat pipe 7 can undergo rapid heat exchange to achieve rapid condensation.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A heat dissipation device, characterized in that: include: Heat sink; The evaporating element is tightly fixed and fitted with the heat dissipating element; A condensing element, which is arranged on one side of the evaporating element; as well as A heat transfer element is disposed between the evaporation element and the condensation element so as to perform heat exchange between the evaporation element and the condensation element by circulating a refrigerant disposed in the heat transfer element; The evaporating element comprises a heat pipe evaporator (4) which is tightly fixed and fitted to the heat transfer element; The condensing element comprises a heat pipe condenser (5) arranged on one side of the heat pipe evaporator (4); The heat pipe condenser (5) is located directly above the heat pipe evaporator (4), and the heat transfer element includes a circulating heat pipe (6) that is vertically fixed and penetrates between the heat pipe evaporator (4) and the heat pipe condenser (5). The circulating heat pipe (6) is a waist-shaped ring structure, and the refrigerant is located in the circulating heat pipe (6).

2. A heat dissipation device according to claim 1, characterized in that: The heat transfer element comprises a liquid wick heat pipe (7) fixedly arranged to penetrate between the heat pipe evaporator (4) and the heat pipe condenser (5), and the refrigerant is located in the liquid wick heat pipe (7).

3. A heat dissipation device according to claim 1, characterized in that: The heat sink comprises a frequency converter heat sink (3), and the heat pipe evaporator (4) is tightly fixedly fitted to the side wall of the frequency converter heat sink (3).

4. The heat dissipation device according to claim 1, characterized in that: A heat dissipation fan (8) is provided on one side of the heat pipe condenser (5).

5. A general frequency converter, characterized in that: The invention comprises an inverter mainboard (1), a plurality of heating elements (2) arranged on the inverter mainboard (1), and a heat dissipation device as claimed in any one of claims 1 to 4 installed between the heating ends of the plurality of heating elements (2).

6. A variable frequency air conditioner, characterized in that: Comprising the universal frequency converter as claimed in claim 5.

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