CN213367622U - Frequency converter and refrigerating system - Google Patents
Frequency converter and refrigerating system Download PDFInfo
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- CN213367622U CN213367622U CN202022663305.4U CN202022663305U CN213367622U CN 213367622 U CN213367622 U CN 213367622U CN 202022663305 U CN202022663305 U CN 202022663305U CN 213367622 U CN213367622 U CN 213367622U
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- heat exchanger
- frequency converter
- mounting port
- fan
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The present disclosure provides a frequency converter and a refrigeration system. Wherein, the converter includes: a box body; the partition board is arranged in the box body, and the upper part and the lower part of the partition board are respectively provided with a first mounting port and a second mounting port; an electrical component located at one side of the partition board; the fan is arranged on the first mounting port and is configured to perform air cooling heat dissipation on the electrical element; the liquid cooling heat exchanger is arranged on the second mounting port and is configured to cool and exchange heat for air flowing through the second mounting port; wherein, the other side of baffle forms independent return air passageway with the box jointly. The low temperature air after the heat transfer of liquid cooling heat exchanger in this disclosed converter passes through the wind channel upstream, blows in electrical components installation space through the fan in, and direct action is in electrical components, dispels the heat and cools down, and the air after the absorption heat gets back to liquid cooling heat exchanger and cools down, accomplishes inside air current circulation in the converter, improves the reliable operation stability of converter.
Description
Technical Field
The disclosure relates to the technical field of air conditioning equipment, in particular to a frequency converter and a refrigerating system.
Background
With the development of the variable frequency air conditioning technology, the fixed frequency of the large-sized water chilling unit on the market is gradually replaced by the variable frequency. A common frequency conversion refrigeration system is generally equipped with a frequency conversion compressor, a shell and tube heat exchanger, a frequency converter, a fin heat exchanger, an electric cabinet and other components.
As a driving device of the inverter compressor, the inverter is generally composed of electronic components such as an inverter board and a rectifier board, and during the operation of the device, a very large amount of heat is generated, and if the inverter is not subjected to heat dissipation and temperature reduction treatment, the inverter is damaged.
Common frequency converter cooling modes can be divided into two types: firstly, a fan is arranged on a box body structure to perform forced convection heat dissipation on components in the board; this method is relatively simple, but the heat dissipation effect is poor. The second method is to combine the circulation of the air conditioner, and to arrange a coil pipe or a small-sized fin heat exchanger behind the electric element plate of the frequency converter, and to use a low-temperature refrigerant to cool the electric element of the frequency converter.
SUMMERY OF THE UTILITY MODEL
The inventor researches and finds that the related art has the problem that the electrical components are subjected to condensation.
In view of this, the embodiment of the present disclosure provides a frequency converter and a refrigeration system, which can effectively prevent the surface of a component from being damaged due to condensation, and improve the working reliability.
Some embodiments of the present disclosure provide a frequency converter, comprising:
a box body;
the partition board is arranged in the box body, and the upper part and the lower part of the partition board are respectively provided with a first mounting port and a second mounting port;
an electrical component located at one side of the partition board;
the fan is arranged on the first mounting port and is configured to perform air cooling heat dissipation on the electrical element; and
the liquid cooling heat exchanger is arranged on the second mounting port and is configured to cool and exchange heat for air flowing through the second mounting port;
wherein, the other side of baffle forms independent return air passageway with the box jointly.
In some embodiments, the bottom of the box body is provided with a water outlet communicated with the return air channel.
In some embodiments, the box further comprises a porous plate which is arranged in the box body and is fully distributed with the through holes, the electrical element is installed on the porous plate, and the porous plate and the partition plate are arranged in a separated mode.
In some embodiments, the electrical component is mounted on a side of the perforated plate remote from the separator plate.
In some embodiments, the temperature sensor is arranged on the electrical element and used for detecting the variable frequency temperature of the electrical element.
In some embodiments, the first mounting opening is sized to accommodate the mounting size of the fan, and the second mounting opening is sized to accommodate the mounting size of the liquid-cooled heat exchanger.
In some embodiments, the fan and the liquid cooled heat exchanger are both located on the other side of the partition.
In some embodiments, the liquid-cooled heat exchanger comprises a coil heat exchanger or a fin heat exchanger.
Some embodiments of the present disclosure provide a refrigeration system comprising the aforementioned frequency converter.
In some embodiments, the refrigeration system further includes a compressor, a condenser, an electronic expansion valve, an evaporator, and a cooling electronic expansion valve, wherein the compressor, the condenser, the electronic expansion valve, and the evaporator are disposed in the main refrigerant flow path, the cooling electronic expansion valve and the inverter are disposed in the bypass refrigerant flow path, and the cooling electronic expansion valve is configured to control a flow rate of the refrigerant flowing into the liquid-cooled heat exchanger.
Therefore, based on above-mentioned technical scheme, this disclosed converter is through setting up the baffle in the box, and set up fan and liquid cooling heat exchanger on the baffle, the opposite side of baffle forms independent return air passageway with the box jointly, low temperature air after liquid cooling heat exchanger heat transfer cooling, through wind channel upstream, blow in electrical components installation space through the fan, direct action is in electrical components, the cooling dispels the heat, the air after the heat absorption gets back to liquid cooling heat exchanger and cools down, inside air circulation in the completion converter, effectively prevent the condensation from appearing in components and parts surface when guaranteeing the heat dissipation effect, improve the reliable operation stability of converter.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be understood more clearly and in accordance with the following detailed description, taken with reference to the accompanying drawings,
wherein:
fig. 1 is a schematic elevation view of some embodiments of a frequency converter according to the present disclosure;
fig. 2 is a schematic diagram of a right-view structure of some embodiments of a frequency converter according to the present disclosure;
FIG. 3 is a schematic block diagram of some embodiments of refrigeration systems according to the present disclosure.
Description of the reference numerals
1. A box body; 2. a perforated plate; 3. a liquid cooling heat exchanger; 4. a fan; 5. a water outlet; 6. an electrical component; 7. a partition plate; 100. a frequency converter; 101. a compressor; 102. a condenser; 103. an electronic expansion valve; 104. an evaporator; 105. cooling the electronic expansion valve.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, the particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1 and 2, some embodiments of the present disclosure provide a frequency converter 100, including: the liquid cooling heat exchanger comprises a box body 1, a partition plate 7, an electrical component 6, a fan 4 and a liquid cooling heat exchanger 3, wherein the partition plate 7 is arranged in the box body 1, and the upper part and the lower part of the partition plate are respectively provided with a first mounting port and a second mounting port; the electrical element 6 is positioned on one side of the partition 7; the fan 4 is arranged on the first mounting opening and is configured to carry out air-cooling heat dissipation on the electrical component 6; the liquid cooling heat exchanger 3 is arranged on the second mounting port and is configured to cool and exchange heat for air flowing through the second mounting port; the other side of the partition 7 and the box body 1 form an independent return air channel together.
In the illustrative embodiment, the partition plate 7 is arranged in the box body 1, the partition plate 7 is provided with the first mounting port and the second mounting port, the fan 4 and the liquid cooling heat exchanger 3 are arranged on the partition plate 7, the other side of the partition plate 7 and the box body jointly form an independent air channel for returning air of the fan 4, and the fan 4, the liquid cooling heat exchanger 3 and the partition plate 7 form a circulating air channel in the box body 1. As shown in fig. 2, the air current that drives by fan 4 in the converter 100 forms the compulsory convection current, the low temperature air after the cooling of 3 heat exchanges of liquid cooling heat exchanger, through the wind channel upwind, blow in electrical components installation space through fan 4 in, direct action is in electrical components 6 and is dispelled the heat the cooling, the air after the absorbed heat gets back to liquid cooling heat exchanger 3 and cools down, inside air current circulation in the completion converter 100, effectively prevent the condensation from appearing in the components and parts surface when guaranteeing the radiating effect, the reliable operation stability of improvement converter.
In some embodiments, the liquid-cooled heat exchanger includes a coil heat exchanger or a fin heat exchanger, so as to ensure that the air after absorbing heat returns to the liquid-cooled heat exchanger 3 for rapid cooling, which has high feasibility of implementation.
In order to effectively prevent condensation caused by the fact that the temperature of electrical components is lower than the dew point temperature of the ambient air under the extreme working conditions, in some embodiments, as shown in fig. 1 and 2, a water outlet 5 communicated with a return air channel is arranged at the bottom of the box body 1. Obviously, the lowest temperature position in the frequency converter 100 can only be present in the liquid cooling heat exchanger 3, and due to the forced convection caused by the fan 4, the condensed water generated on the liquid cooling heat exchanger 3 can be blown into the air duct by the air flow and then discharged through the water discharge port 5; the relative humidity of the air flow passing through the liquid cooling heat exchanger 3 is also reduced, so that the installation space of the electrical components in the frequency converter 100 is kept dry.
As to how to mount the electrical component 6 on one side of the partition 7, in some embodiments, as shown in fig. 1 and fig. 2, the frequency converter 100 further includes a porous plate 2 disposed in the box 1 and filled with through holes, the electrical component 6 includes an inverter plate, a rectifier plate, etc., the electrical component 6 is mounted on the porous plate 2, and the porous plate 2 is spaced from the partition 7. The electric element 6 is arranged on the porous plate 2 separated from the partition plate 7, so that the airflow flow heat dissipation is facilitated, and the practicability is high. In some embodiments, the electrical component 6 is mounted on the perforated plate 2 on a side remote from the partition 7.
It should be noted that the perforated plate in the present disclosure is only for description, and practical applications include various perforated plates such as circular holes, square holes, etc., or mounting plane structures such as grid nets, etc., which are permeable to wind.
To facilitate the fan and the liquid-cooled heat exchanger space forming a single air duct, in some embodiments, the fan 4 and the liquid-cooled heat exchanger 3 are located on opposite sides of the partition 7, as shown in fig. 2.
In some embodiments, the size of the first mounting port is matched with the mounting size of the fan 4, and the size of the second mounting port is matched with the mounting size of the liquid cooling heat exchanger 3, so that side leakage is avoided, circulation between the airflow fan 4 and the liquid cooling heat exchanger 3 is ensured, and heat exchange efficiency is improved.
In some embodiments, the frequency converter further includes a temperature sensor disposed on the electrical component 6 for detecting a variable frequency temperature of the electrical component 6, so as to control a flow rate of the refrigerant flowing into the liquid-cooled heat exchanger 3.
Some embodiments of the present disclosure provide a refrigeration system comprising the aforementioned frequency converter 100. The refrigeration system accordingly has the beneficial technical effects.
In some embodiments, as shown in fig. 3, the refrigeration system further includes a compressor 101, a condenser 102, an electronic expansion valve 103, an evaporator 104, and a cooling electronic expansion valve 105, wherein the compressor 101, the condenser 102, the electronic expansion valve 103, and the evaporator 104 are disposed in the main refrigerant flow path, the cooling electronic expansion valve 105 and the inverter 100 are disposed in the bypass refrigerant flow path, and the cooling electronic expansion valve 105 is configured to control the flow rate of the refrigerant flowing into the liquid-cooled heat exchanger 3.
As shown in fig. 3, after the bypass position of the refrigerant bypass flow path is located in the condenser 102, the high-temperature and high-pressure refrigerant gas compressed by the compressor 101 is condensed by the condenser 102 and becomes the refrigerant liquid at normal temperature and high pressure, and then enters the main flow path and the bypass flow path, respectively. The refrigerant in the main flow path enters the evaporator 104 for heat exchange after being throttled by the electronic expansion valve 103, and finally returns to the compressor 101 to complete the main path circulation. The liquid refrigerant in the bypass flow path is throttled by the cooling electronic expansion valve 105, changed into a low-temperature two-phase state, enters the liquid cooling heat exchanger 3 in the frequency converter 100, exchanges heat with the air flow inside the frequency converter, returns to the main path side for throttling, and completes refrigerant circulation.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A frequency converter, comprising:
a box body (1);
the partition plate (7) is arranged in the box body (1), and the upper part and the lower part of the partition plate are respectively provided with a first mounting opening and a second mounting opening;
an electrical component (6) located on one side of the partition (7);
a fan (4) mounted on the first mounting port and configured to cool and dissipate heat of the electrical component (6); and
the liquid cooling heat exchanger (3) is arranged on the second mounting port and is configured to carry out cooling heat exchange on air flowing through the second mounting port;
the other side of the partition plate (7) and the box body (1) form an independent return air channel together.
2. Frequency converter according to claim 1, characterized in that the bottom of the box (1) is provided with a drain (5) communicating with the return air channel.
3. The frequency converter according to claim 1, further comprising a porous plate (2) disposed in the box (1) and filled with through holes, wherein the electrical component (6) is mounted on the porous plate (2), and the porous plate (2) and the partition plate (7) are disposed in a spaced manner.
4. Frequency converter according to claim 3, characterized in that the electrical element (6) is mounted on the perforated plate (2) on the side remote from the partition (7).
5. Frequency converter according to claim 3, characterized in that it further comprises a temperature sensor arranged on the electrical element (6) for detecting the frequency conversion temperature of the electrical element (6).
6. Frequency converter according to claim 1, characterized in that the first mounting opening has dimensions adapted to the mounting dimensions of the fan (4) and the second mounting opening has dimensions adapted to the mounting dimensions of the liquid-cooled heat exchanger (3).
7. Frequency converter according to claim 1, characterized in that the fan (4) and the liquid-cooled heat exchanger (3) are both located on the other side of the partition (7).
8. The frequency converter of claim 1, wherein the liquid-cooled heat exchanger comprises a coil heat exchanger or a fin heat exchanger.
9. A refrigeration system comprising the inverter according to any one of claims 1 to 8.
10. The refrigeration system of claim 9, further comprising a compressor (101), a condenser (102), an electronic expansion valve (103), an evaporator (104), and a cooling electronic expansion valve (105), wherein the compressor (101), the condenser (102), the electronic expansion valve (103), and the evaporator (104) are disposed in a main refrigerant flow path, the cooling electronic expansion valve (105) and the inverter (100) are disposed in a bypass refrigerant flow path, and the cooling electronic expansion valve (105) is configured to control a flow rate of a refrigerant flowing into the liquid cooling heat exchanger (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022663305.4U CN213367622U (en) | 2020-11-17 | 2020-11-17 | Frequency converter and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022663305.4U CN213367622U (en) | 2020-11-17 | 2020-11-17 | Frequency converter and refrigerating system |
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| Publication Number | Publication Date |
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| CN213367622U true CN213367622U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022663305.4U Active CN213367622U (en) | 2020-11-17 | 2020-11-17 | Frequency converter and refrigerating system |
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| CN (1) | CN213367622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113395880A (en) * | 2021-06-22 | 2021-09-14 | 中国科学院空间应用工程与技术中心 | Space heat dissipation backplate and space heat dissipation cabinet body |
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2020
- 2020-11-17 CN CN202022663305.4U patent/CN213367622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113395880A (en) * | 2021-06-22 | 2021-09-14 | 中国科学院空间应用工程与技术中心 | Space heat dissipation backplate and space heat dissipation cabinet body |
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