CN216700787U - Heat dissipation device and photovoltaic air conditioner - Google Patents
Heat dissipation device and photovoltaic air conditioner Download PDFInfo
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- CN216700787U CN216700787U CN202123266442.5U CN202123266442U CN216700787U CN 216700787 U CN216700787 U CN 216700787U CN 202123266442 U CN202123266442 U CN 202123266442U CN 216700787 U CN216700787 U CN 216700787U
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- heat dissipation
- heat
- air conditioner
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- photovoltaic air
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 68
- 239000003507 refrigerant Substances 0.000 claims abstract description 24
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a heat dissipation device and a photovoltaic air conditioner, which comprise a circulating pipeline, a driving assembly and an outer heat dissipater; the circulating pipeline comprises a heat absorption section and a heat dissipation section, the heat absorption section is arranged in a heating area with heat dissipation requirements, and the heat dissipation section is arranged on the outer radiator; the circulating pipeline is filled with cooling medium, and the driving assembly is used for driving the cooling medium to circularly flow in the circulating pipeline. The heat of the converter unit is conducted to the outer radiator through the circulating pipeline filled with the cooling medium for auxiliary heat dissipation, the heat dissipation efficiency of the converter unit is improved through the heat dissipation device, and a good heat dissipation effect can be achieved even when the photovoltaic air conditioner is not refrigerated. The circulating pipeline can also exchange heat with a refrigerant pipeline for refrigeration, so that the heat exchange efficiency of the converter unit can be further improved when the photovoltaic air conditioner is refrigerated; due to the fact that the heat dissipation performance is improved, the output power of the photovoltaic air conditioner in a high-temperature area is improved.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a heat dissipation device and a photovoltaic air conditioner.
Background
With the increasing environmental pollution problem, solar energy is attracting public attention as a clean and reliable energy source, and photovoltaic air conditioners are used. The photovoltaic air conditioner has the functions of photovoltaic power generation and refrigeration, and can utilize self power generation for refrigeration. When the refrigeration is not carried out, the power generation assembly still operates, and power generation is integrated into a power grid to be supplied to other electric equipment.
When the heat dissipation design of the photovoltaic air conditioner is carried out, the heat dissipation problem of power devices such as IGBT and MOS in the power generation assembly converter unit and the reactor needs to be considered in a key mode. According to test data, the temperature of a power device region can reach 95 ℃ and the temperature of a reactor region can reach 110 ℃ when a unit runs at full power under a high-temperature working condition, so that the service life of the device is greatly influenced when the unit runs for a long time under the environment, and the output power of the converter unit can be reduced by 10% under the high-temperature environment.
The converter unit of the traditional photovoltaic air conditioner only depends on air cooling for heat dissipation, and in high-temperature areas such as the middle east, the outdoor temperature can reach more than 50 ℃, and the heat dissipation requirement of the converter unit cannot be met only by depending on the air cooling for heat dissipation. Under severe environment, the photovoltaic air conditioner needs to limit output power through program regulation and control so as to avoid heat damage of devices, so that the unit cannot stably operate at the maximum design power stage, and instability of the system is caused to a certain extent.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a heat dissipation device and a photovoltaic air conditioner, which are used for solving the problem that the heat dissipation of a converter unit of the photovoltaic air conditioner is insufficient in a high-temperature area.
The utility model provides a heat dissipation device, which comprises a circulating pipeline, a driving assembly and an outer heat radiator, wherein the circulating pipeline is connected with the driving assembly;
the circulating pipeline comprises a heat absorption section and a heat dissipation section, the heat absorption section is arranged in a heating area with heat dissipation requirements, and the heat dissipation section is arranged on the outer radiator;
the circulating pipeline is filled with cooling medium, and the driving assembly is used for driving the cooling medium to circularly flow in the circulating pipeline.
Preferably, the heat dissipation device further comprises a fan, and the fan is used for assisting the heat radiator in air cooling heat dissipation.
Preferably, the outer heat sink comprises heat dissipating fins attached to a surface of the heat dissipating section.
Preferably, the drive assembly comprises an electric motor.
Preferably, the cooling medium is water.
The utility model also provides a photovoltaic air conditioner which is provided with the heat dissipation device recorded in any technical scheme.
Preferably, the circulation pipeline further comprises an auxiliary heat dissipation section;
the auxiliary heat dissipation section is in contact heat exchange with a refrigerant pipeline of the photovoltaic air conditioner.
Optionally, the refrigerant pipeline comprises a refrigeration section between an evaporator and a condenser of the photovoltaic air conditioner;
the auxiliary heat dissipation section and the refrigeration section are in contact heat exchange.
Preferably, the auxiliary heat dissipation section is attached to or wound around the refrigerant pipeline.
Preferably, the refrigerant pipeline is attached to or wound on the auxiliary heat dissipation section.
The utility model has the beneficial effects that: the heat of the converter unit is conducted to the external radiator through the circulating pipeline filled with the cooling medium for auxiliary heat dissipation, so that the heat dissipation efficiency of the converter unit is improved, and a good heat dissipation effect can be achieved even when the photovoltaic air conditioner is not refrigerated; the circulating pipeline can also exchange heat with a refrigerant pipeline for refrigeration, so that the heat exchange efficiency of the converter unit can be further improved when the photovoltaic air conditioner is refrigerated; due to the improvement of the heat dissipation performance, the output power of the photovoltaic air conditioner in a high-temperature area is improved, and the influence of high temperature on the service life of devices of the photovoltaic air conditioner is reduced.
Drawings
The utility model is described in detail below with reference to examples and figures, in which:
fig. 1 is a structural view of a heat dissipating device of the present invention.
Fig. 2 is a structural view of the photovoltaic air conditioner of the present invention.
Fig. 3 is a structural view of the heat exchanger.
Description of reference numerals:
1-a converter unit shell, 11-a reactor installation area, 12-a power device installation area, 2-a photovoltaic air conditioner case, 21-a refrigerating unit installation position, 3-a circulation pipeline, 31-a heat absorption section, 32-a heat dissipation section, 33-an auxiliary heat dissipation section, 4-an external heat radiator, 5-a motor, 6-a fan, 7-a refrigerant pipeline, 8-a heat exchanger, 81-a first coil pipe, 82-a second coil pipe, 83-a heat conduction plate and 84-a heat insulation layer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the utility model, and does not imply that every embodiment of the utility model must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The principles of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The utility model provides a heat dissipation device as shown in figure 1, which comprises a circulation pipeline 3, a driving assembly and an outer heat radiator 4;
the circulating pipeline 3 comprises a heat absorption section 31 and a heat dissipation section 32, wherein the heat absorption section 31 is arranged in a heating area with heat dissipation requirements, and the heat dissipation section 32 is arranged on the outer radiator 4;
the circulating pipeline 3 is internally provided with a cooling medium, and the driving assembly is used for driving the cooling medium to circularly flow in the circulating pipeline 3. The heat of the converter unit is conducted to the outer radiator 4 for auxiliary heat dissipation through the circulating pipeline 3 filled with the cooling medium, and the heat dissipation efficiency of the converter unit is improved.
The outer heat sink 4 is provided with a plurality of sets of fins attached to the surface of the heat dissipating section 32.
A fan 6 is arranged at the periphery of the outer radiator 4 for accelerating the air flow to improve the heat dissipation speed of the outer radiator 4.
The cooling medium in this embodiment is water, and may be other secondary refrigerant.
The driving assembly comprises a motor 5, and under the action of the motor 5, the cooling medium continuously circulates in the circulating pipeline 3.
The utility model also provides a photovoltaic air conditioner as shown in fig. 2, which is provided with the heat dissipation device in any one of the embodiments.
In this embodiment, the heat dissipation device is used for dissipating heat of a converter unit of a photovoltaic air conditioner. The converter unit of the photovoltaic air conditioner is provided with an independent shell, and the shell is installed inside a machine case of the photovoltaic air conditioner. The converter unit shell 1 has an upper layer and a lower layer, wherein the upper layer is used for installing a reactor, and the lower layer is used for installing a power device and comprises an IGBT and an MOS.
The periphery of the photovoltaic air conditioner is provided with a case, the converter unit and the converter unit shell 1 are positioned in the photovoltaic air conditioner case 2, and meanwhile, a refrigerating unit of the photovoltaic air conditioner is also arranged in the photovoltaic air conditioner case 2.
The refrigerating unit 8 includes components such as a compressor, a condenser, and an evaporator, and a refrigerant line 7 connecting these components. When the photovoltaic air conditioner is used for refrigerating, the compressor is started, and the refrigerant starts to circularly flow in the refrigerant pipeline 7.
Two fans 6 are arranged at the top of the photovoltaic air conditioner case 2, and the fans 6 are used for radiating heat for the compressor and the outer radiator 4. The outer radiator 4 is arranged on the side surface of the converter unit shell 1, and is specifically close to an air duct of the fan 6. When the refrigeration unit is not operating, the fan 6 alone dissipates heat for the outer heat sink 4.
The heat absorption section 31 of the circulation pipeline 3 is arranged at the periphery of the reactor and the power device, and the cooling medium absorbs heat and flows to the heat dissipation section 32 embedded in the outer radiator 4 to dissipate heat under the action of the driving assembly. In this embodiment, the circulation pipeline 3 further includes an auxiliary heat dissipation section 33, and the auxiliary heat dissipation section 33 performs contact heat exchange with the refrigerant pipeline 7 of the photovoltaic air conditioner. The heat absorbing section 31, the heat dissipating section 32 and the auxiliary heat dissipating section 33 are serially connected. The auxiliary heat dissipation section 33 can only be used when the photovoltaic air conditioner is refrigerated, and the heat dissipation section 32 is not affected by refrigeration and can work at any time.
Because the temperature in the converter unit shell 1 is very high, the auxiliary heat dissipation section 33 can exchange heat with any section of the refrigerant pipeline 7 to achieve a heat exchange effect. The preferable scheme is that the auxiliary heat dissipation section 33 exchanges heat with the refrigerant pipeline 7 in the refrigerating section between the evaporator and the condenser, and the effect is best.
The auxiliary heat dissipating section 33 and the refrigerant pipeline 7 may be mounted in various ways. Fig. 2 shows an installation manner in which the auxiliary heat dissipation section 33 is spirally wound around the outside of the pipe line of the refrigerant pipe 7, or a section of the pipe line of the refrigerant pipe 7 is spirally wound around the periphery of the auxiliary heat dissipation section 33.
Figure 3 shows another mounting. The refrigerant pipeline 7 and the auxiliary heat dissipation section 33 are connected into the heat exchanger 8 for heat exchange. A first coil 81 and a second coil 82 are arranged in the heat exchanger 8, wherein the first coil 81 is connected to the refrigerant pipeline 7, and the second coil 82 is connected to the auxiliary heat dissipation section 33. The heat exchanger 8 is provided with a heat conducting plate 83 at the middle thereof, and a first coil 81 and a second coil 82 are respectively attached to both sides of the heat conducting plate 83. The periphery of the heat exchanger 8 is adhered with an insulating layer 84. The heat exchanger 8 can improve the heat exchange efficiency of the refrigerant pipeline 7 and the auxiliary heat dissipation section 33, and saves the internal space of the photovoltaic air conditioner case 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A heat dissipation device is characterized by comprising a circulation pipeline, a driving assembly and an outer heat radiator;
the circulating pipeline comprises a heat absorption section and a heat dissipation section, the heat absorption section is arranged in a heating area with heat dissipation requirements, and the heat dissipation section is arranged on the outer radiator;
the circulating pipeline is filled with a cooling medium, and the driving assembly is used for driving the cooling medium to circularly flow in the circulating pipeline.
2. The heat dissipating device of claim 1, further comprising a fan for assisting the heat sink in air-cooling heat dissipation.
3. The heat dissipating device of claim 1, wherein said outer heat sink comprises heat dissipating fins attached to a surface of said heat dissipating section.
4. The heat dissipating device of claim 1, wherein said drive assembly comprises a motor.
5. The heat sink of claim 1, wherein the cooling medium is water.
6. A photovoltaic air conditioner, characterized in that, is provided with the heat dissipating device of any one of claims 1 to 5.
7. The photovoltaic air conditioner of claim 6, wherein the circulation duct further comprises an auxiliary heat dissipation section;
the auxiliary heat dissipation section is in contact heat exchange with a refrigerant pipeline of the photovoltaic air conditioner.
8. The photovoltaic air conditioner of claim 7, wherein the refrigerant line comprises a refrigeration section located between an evaporator and a condenser of the photovoltaic air conditioner;
the auxiliary heat dissipation section and the refrigeration section are in contact heat exchange.
9. The photovoltaic air conditioner of claim 7, wherein the auxiliary heat dissipation section is attached to or wound around the refrigerant pipe.
10. The photovoltaic air conditioner of claim 7, wherein the refrigerant pipeline is attached to or wound around the auxiliary heat dissipation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123266442.5U CN216700787U (en) | 2021-12-23 | 2021-12-23 | Heat dissipation device and photovoltaic air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123266442.5U CN216700787U (en) | 2021-12-23 | 2021-12-23 | Heat dissipation device and photovoltaic air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216700787U true CN216700787U (en) | 2022-06-07 |
Family
ID=81841369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123266442.5U Active CN216700787U (en) | 2021-12-23 | 2021-12-23 | Heat dissipation device and photovoltaic air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216700787U (en) |
-
2021
- 2021-12-23 CN CN202123266442.5U patent/CN216700787U/en active Active
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