CN219037114U - Refrigerant circulation system and air conditioning equipment - Google Patents
Refrigerant circulation system and air conditioning equipment Download PDFInfo
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- CN219037114U CN219037114U CN202223004546.3U CN202223004546U CN219037114U CN 219037114 U CN219037114 U CN 219037114U CN 202223004546 U CN202223004546 U CN 202223004546U CN 219037114 U CN219037114 U CN 219037114U
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 98
- 238000004378 air conditioning Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 238000007791 dehumidification Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
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Abstract
The utility model relates to a refrigerant circulation system and air conditioning equipment, the refrigerant circulation system includes: a compressor (1); -an electrical assembly (18) comprising an electrical component (5) electrically connected to the compressor (1); a condenser (14) connected to the exhaust port of the compressor (1); a first heat exchanger (4) configured to exchange heat with the electrical component (18) and connected with the condenser (14); a first throttling part (13) arranged in a pipeline connecting the condenser (14) and the first heat exchanger (4); a second throttling part (2) connected with the first heat exchanger (4) and positioned at the downstream of the first heat exchanger (4) along the refrigerant flowing direction; the control valve (11) comprises an inlet connected with the condenser (14) and an outlet connected with the first heat exchanger (4), and the control valve (11) bypasses the first throttling part (13), so that the problem that condensed water appears in an electrical component due to too low temperature in the prior art is solved.
Description
Technical Field
The utility model relates to the technical field of engineering, in particular to a refrigerant circulation system and air conditioning equipment.
Background
The integrated centrifugal compressor integrates the frequency converter on the compressor, so that the space of the airborne frequency converter is saved, the unit structure is more compact, the volume is smaller, and the integrated compressor is the preferred scheme for making the modularized unit.
On the integrated compressor, the motor, the IGBT of the frequency converter, the switching power supply, the capacitor and the like belong to heating devices, and the devices can be reduced in capacity even cause faults and cannot be used normally due to the fact that the temperature of the devices is too high, so that the compressor is required to be subjected to thermal management control in order to ensure the normal and reliable operation of the compressor. The cooling scheme commonly used at present is to take high-pressure and high-temperature refrigerant liquid from a unit condenser, and to cool the device after throttling and cooling, then the refrigerant enters a position with lower pressure on the unit, the scheme has large cooling capacity, can ensure that cooling is sufficient, and avoids the problem of overtemperature of the device, but because the temperature of the throttled refrigerant is lower, when the refrigerant with lower temperature enters a cooling structure of a compressor, the surface temperature of the cooling structure is lower, when the ambient temperature of the cooling structure is relatively higher and the humidity is higher, the condition of condensation can occur, and the condensation water exists on an electric device, so that the compressor is frequently failed, cannot work normally, and even causes the serious problem of short circuit and burnout of the device.
Disclosure of Invention
The utility model aims to provide a refrigerant circulation system and air conditioning equipment so as to solve the problem that condensed water appears in an electrical component due to too low temperature in the prior art.
According to an aspect of the embodiment of the present utility model, there is provided a refrigerant circulation system, including:
a compressor;
an electrical assembly including an electrical component electrically connected to the compressor;
the condenser is connected with an exhaust port of the compressor;
a first heat exchanger configured to exchange heat with the electrical component and connected with the condenser;
the first throttling component is arranged in a pipeline connecting the condenser and the first heat exchanger;
the second throttling component is connected with the first heat exchanger and is positioned at the downstream of the first heat exchanger along the flowing direction of the refrigerant; and
and the control valve comprises an inlet connected with the condenser and an outlet connected with the first heat exchanger, and is bypassed on the first throttling component.
In some embodiments, the refrigerant circulation system further comprises:
a first temperature detection part configured to detect a temperature t1 of the electrical part;
a controller in signal connection with the first temperature detecting component and the control valve, respectively, and configured to:
when the control valve is in an open state and the temperature T1 is less than or equal to the target temperature T1, the control valve is kept in the open state; or (b)
When the control valve is in an open state, the temperature T1 is greater than the target temperature T1, and the opening of the second throttling component reaches the maximum opening, the control valve is closed, and the first throttling component is opened; or (b)
When the control valve is in a closed state and the temperature T1 is less than or equal to the target temperature T1 and the opening of the first throttling part is larger than the minimum opening, the control valve is kept in the closed state; or (b)
When the control valve is in a closed state, the temperature T1 is less than the target temperature T1, and the opening degree of the first throttle member reaches the minimum opening degree, the control valve is opened.
In some embodiments, the first heat exchanger abuts the electrical component to cool the electrical component.
In some embodiments, the compressor includes a compression device and a motor drivingly connected to the compression device, and the electrical component includes a motor control device electrically connected to the motor.
In some embodiments, the motor control device includes a frequency converter.
In some embodiments, the refrigerant circulation system further comprises an air-cooled heat sink that exchanges heat with the electrical component.
In some embodiments, the electrical assembly further comprises a housing for housing the electrical components, the air-cooled heat sink comprising a first portion positioned within the housing in heat exchange relationship with air within the housing and a second portion positioned outside the housing in heat exchange relationship with air outside the housing.
In some embodiments, the air-cooled heat sink includes a first thermally conductive member including a first portion that exchanges heat with air within the enclosure of the electrical assembly and a second portion that is located outside the enclosure and configured to exchange heat with air outside the enclosure.
In some embodiments, the refrigerant circulation system further comprises a second heat exchanger for cooling the electrical component by using the throttled refrigerant.
In some embodiments, the refrigerant circulation system further comprises a water receiving member positioned below the second heat exchanger.
In some embodiments, the drain opening of the water receiving member is provided with a liquid seal.
In some embodiments, the refrigerant circulation system further comprises:
a second temperature detecting part configured to detect a temperature t2 within a case space of the electrical component;
the third throttling component is arranged in a pipeline connecting the second heat exchanger and the condenser;
a controller in signal connection with the second temperature detecting component and the third throttling component respectively and configured to:
when the third throttling component is in a closed state and the temperature T2 is less than or equal to the target temperature T2, the third throttling component is kept in the closed state; or (b)
Opening the third throttling component when the third throttling component is in a closed state and the temperature T2 is more than the target temperature T2; or (b)
When the third throttling component is in an opening state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component is larger than the minimum opening degree, the third throttling component is kept in the opening state; or (b)
And closing the third throttling component when the third throttling component is in an opening state, the temperature T2 is less than the target temperature T2, and the opening degree of the third throttling component reaches the minimum opening degree.
In some embodiments, the second heat exchanger comprises:
the second heat conduction component comprises a first part for exchanging heat with air in a box body of the electric appliance component and a second part for exchanging heat with a refrigerant;
a housing configured to have a second portion of the second heat conductive member disposed therein and connected to the condenser;
a third throttling component is arranged in a pipeline connecting the condenser and the shell.
According to another aspect of the present utility model, there is also provided an air conditioning apparatus including the above refrigerant circulation system.
According to another aspect of the present utility model, there is further provided a method for controlling the above refrigerant circulation system, in some embodiments, the method includes:
detecting the temperature t1 of an electrical component and the switching state of a control valve;
when the control valve is in an open state and the temperature T1 is less than or equal to the target temperature T1, the control valve is kept in the open state; or (b)
When the control valve is in an open state, the temperature T1 is greater than the target temperature T1, and the opening of the second throttling component reaches the maximum opening, the control valve is closed, and the first throttling component is opened; or (b)
When the control valve is in a closed state and the temperature T1 is less than or equal to the target temperature T1 and the opening of the first throttling part is larger than the minimum opening, the control valve is kept in the closed state; or (b)
When the control valve is in a closed state, the temperature T1 is less than the target temperature T1, and the opening degree of the first throttle member reaches the minimum opening degree, the control valve is opened.
In some embodiments, the control method further comprises:
detecting the temperature t2 in the box body space of the electric appliance assembly and the on-off state of a third throttling component arranged in a second heat exchanger and a condenser pipeline which are connected into the box body space of the electric appliance assembly for cooling;
when the third throttling component is in a closed state and the temperature T2 is less than or equal to the target temperature T2, the third throttling component is kept in the closed state; or (b)
Opening the third throttling component when the third throttling component is in a closed state and the temperature T2 is more than the target temperature T2; or (b)
When the third throttling component is in an opening state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component is larger than the minimum opening degree, the third throttling component is kept in the opening state; or (b)
And closing the third throttling component when the third throttling component is in an opening state, the temperature T2 is less than the target temperature T2, and the opening degree of the third throttling component reaches the minimum opening degree.
By applying the technical scheme, when the control valve is in a closed state, the refrigerant output by the condenser is throttled by the first throttling component and then evaporated in the first heat exchanger to cool the electric appliance component; the refrigerant after condensation in the condenser flows to the first heat exchanger through the control valve to cool the electric appliance part when the control valve is opened, and the refrigerant circulation system of the embodiment can adjust the temperature of the refrigerant cooled by the electric appliance part, so that the problem of condensate water caused by the fact that the temperature of the electric appliance part is too low is solved.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of a refrigerant circulation system according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, the refrigerant circulation system of the present embodiment includes a compressor 1, an electric appliance assembly 18, a first heat exchanger 4, a first throttling part 13, a second throttling part 2, and a control valve 11.
The electrical assembly 18 comprises an electrical component 5 electrically connected to the compressor 1; the condenser 14 is connected with the exhaust port of the compressor 1; the first heat exchanger 4 is configured to exchange heat with the electrical component 18 and is connected to the condenser 14; the first throttling part 13 is arranged in a pipeline connecting the condenser 14 and the first heat exchanger 4; the second throttling part 2 is connected with the first heat exchanger 4 and is positioned at the downstream of the first heat exchanger 4 along the flowing direction of the refrigerant; the control valve 11 comprises an inlet connected to the condenser 14 and an outlet connected to the first heat exchanger 4, the control valve 11 being bypassed to the first throttle member 13.
In this embodiment, when the control valve 11 is in a closed state, the refrigerant output by the condenser 14 is throttled by the first throttle part 13, and then evaporated in the first heat exchanger 4 and cooled for the electrical component 5; when the control valve 11 is opened, the condensed refrigerant in the condenser 14 flows to the first heat exchanger 4 through the control valve 11 to cool the electric component 5, and the refrigerant circulation system of the embodiment can adjust the temperature of the refrigerant cooled by the electric component 5, so that the problem of condensed water caused by too low temperature of the electric component 5 is solved.
The refrigerant circulation system further includes a bypass throttle member 3 that bypasses the second throttle member 2 and is connected in parallel with the second throttle member.
The refrigerant circulation system further comprises an evaporator 19, and in some embodiments the outlet of the second restriction member 2 and/or the bypass restriction member 3 is connected to the evaporator 19. The outlet of the evaporator 19 is connected to the suction port of the compressor 1, so that the refrigerant evaporated in the evaporator 19 is sent to the compressor 1 to be compressed again.
In this embodiment, the refrigerant flow path for cooling the electrical component 5 has two modes of operation.
In the first operation mode, the first throttle member 13 is closed, and the refrigerant flow path is: condenser 14-control valve 11-first heat exchanger 4-second throttle element 2 and/or bypass throttle element 3-evaporator 19. The second throttling part 2 plays a role in regulating the flow of the refrigerant, and the bypass throttling part 3 plays a role in assisting in increasing the flow of the refrigerant. If the second restriction member 2 is sufficiently fluid, the bypass restriction member 3 may be eliminated. The working principle of the refrigerant flow path is as follows: the refrigerant liquid is taken from the condenser 14, enters the first heat exchanger 4 through the control valve 11, exchanges heat through the first heat exchanger 4 and the electric appliance part 5, cools the electric appliance part 5, passes through the second throttling part 2 and/or the bypass throttling part 3, and finally enters the evaporator 19. The cooling mode has the advantages that the refrigerant entering the first heat exchanger 4 is not throttled at the moment, the temperature is high, condensation generated by the too low temperature of the electric appliance part 5 can be avoided, and the low-power operation of the compressor 1 is met.
In the second operation mode, the control valve 11 is closed, and the refrigerant flow path is: condenser 14-first throttle element 13-first heat exchanger 4-second throttle element 2 and/or bypass throttle element 3-evaporator. The working principle of the refrigerant flow path is as follows: the refrigerant liquid is taken from the condenser, throttled and cooled by the first throttling component 13 and then enters the first heat exchanger 4, the refrigerant exchanges heat with the electric appliance component 5 through the first heat exchanger 4, the electric appliance component 5 is cooled, then the refrigerant passes through the second throttling component 2 and/or the bypass throttling component 3, and finally enters the evaporator 19. The first throttle member 13 plays a role in throttling and adjusting the amount of cooling, and adjusts the opening degree according to the amount of cooling demand. The cooling mode has the advantages that the refrigerant with lower temperature can be obtained after the refrigerant is throttled by the first throttling part 13, the latent heat of the refrigerant is fully utilized, the larger cooling capacity can be obtained, and the high-power operation of the compressor is met.
The refrigerant circulation system further comprises a first temperature detection component and a controller. The first temperature detection means is configured to detect a temperature t1 of the electrical component 5; the controller is in signal connection with the first temperature detecting means and the control valve 11, respectively, and is configured to:
when the control valve 11 is in an open state and the temperature T1 is less than or equal to the target temperature T1, the control valve 11 is kept in the open state so as to enable the refrigerant flow path for cooling the electric appliance part 5 to operate in the first working mode;
when the control valve 11 is in an open state and the temperature T1 is greater than the target temperature T1 and the opening of the second throttling part 2 reaches the maximum opening, closing the control valve 11 and opening the first throttling part 13 so as to enable the refrigerant flow path for cooling the electric appliance part 5 to operate in the second working mode;
when the control valve 11 is in a closed state and the temperature T1 is less than or equal to the target temperature T1 and the opening of the first throttling part 13 is larger than the minimum opening, the control valve 11 is kept in the closed state so as to enable the refrigerant flow path for cooling the electric appliance part 5 to operate in the second working mode;
when the control valve 11 is in the closed state and the temperature T1 is less than the target temperature T1 and the opening degree of the first throttle member 13 reaches the minimum opening degree, the control valve 11 is opened so that the refrigerant flow path for cooling the electric component 5 operates in the second operation mode.
In some embodiments, the first heat exchanger 4 abuts the electrical component 5 to cool the electrical component 5.
In some embodiments, the compressor 1 comprises a compression device and a motor drivingly connected to the compression device, and the electrical component 5 comprises a motor control device electrically connected to the motor. In some embodiments, the motor control device includes a frequency converter.
The refrigerant circulation system further includes an air-cooled radiator 6 that exchanges heat with the electrical component 18.
In some embodiments, the electrical assembly 18 further comprises a housing for housing the electrical components 5, and the air-cooled heat sink 6 comprises a first portion located within the housing that exchanges heat with air within the housing and a second portion located outside the housing that exchanges heat with air outside the housing.
In some embodiments, the air-cooled heat sink 6 includes a first thermally conductive member including a first portion that exchanges heat with air within the enclosure of the electrical assembly 18 and a second portion that is located outside of the enclosure and configured to exchange heat with air outside of the enclosure. The second part of the first heat conduction component exchanges heat with air outside the box body, and the second part radiates heat into the air outside the box body. In some embodiments, the first thermally conductive member is a heat pipe that exchanges heat (naturally cools) with air outside the cartridge.
The refrigerant circulation system further comprises a second heat exchanger 9 for cooling the electric appliance assembly 18 by utilizing the throttled refrigerant. The second heat exchanger 9 cools the space in the box of the electrical component 18.
The refrigerant circulation system further comprises a fan 7 for driving air in the electrical component 18 to the air-cooled radiator 6 and the second heat exchanger 9.
The refrigerant circulation system further includes a water receiving part 12 located below the second heat exchanger 9. The drain opening of the water receiving member 12 is provided with a liquid seal structure. The box body of the electric appliance component 18 is sealed by utilizing the principle of liquid seal, so that the external air is prevented from entering the space of the box body, and the sealing effect is achieved.
The second heat exchanger 9 comprises a second heat conduction part 8 and a shell, wherein the second heat conduction part comprises a first part for exchanging heat with air in a box body of the electric appliance assembly 18 and a second part for exchanging heat with a refrigerant; the housing is configured to have a second portion of the second heat conducting member 8 disposed therein and connected to the condenser 14; a third throttling element 10 is arranged in the line connecting the condenser 14 and the housing.
In some embodiments, the second heat conducting component 8 is a heat pipe, and a part of the heat pipe exchanges heat with the refrigerant in the shell to realize cooling.
The system for cooling the space within the enclosure of the electrical component 18 has three modes of operation.
In the first operation mode, the third throttling part 10 is closed, the fan 7 is opened, the fan enables hot air in the space of the box body of the electrical assembly 18 to flow, the hot air exchanges heat with the air-cooled radiator 6, and the air-cooled radiator 6 radiates heat in the space of the box body of the electrical assembly 18 to the environment, so that the space of the box body of the electrical assembly 18 is cooled. The cooling mode has the advantages that natural cooling is utilized, the refrigerating capacity of the unit is not required to be utilized, and the energy efficiency of the unit is improved.
In the second working mode, the third throttling part 10 is opened, the fan 7 is opened, and the refrigerant flow path is as follows: condenser 14-third throttling element 10-housing of second heat exchanger 9-second heat conducting element 8-evaporator 19. The working principle of the refrigerant flow path is that refrigerant liquid is taken from the condenser 14, enters the shell of the second heat exchanger 9 after being throttled and cooled by the third throttling part 10, and exchanges heat between the refrigerant in the shell of the second heat exchanger 9 and the second part of the second heat conduction part 8, so that the second heat conduction part 8 is cooled, the first part of the second heat conduction part 8 exchanges heat with hot air in the box body of the electric appliance component 18, so that the space in the box body of the electric appliance component of the compressor 1 is cooled, and finally the refrigerant enters the evaporator. The third throttle member 10 plays a role in throttling and adjusting the amount of cooling, and adjusts the opening degree according to the amount of cooling demand. The cooling mode has the advantages that the refrigerant with lower temperature can be obtained after throttling by the third throttling part 10, the latent heat of the refrigerant is fully utilized, and larger cooling capacity can be obtained.
In the third operation mode, when the humidity in the space of the box body of the electrical component 18 is higher, in order to avoid condensation of the electrical devices therein, the dehumidification mode (third operation mode) may be turned on, so as to reduce the humidity in the space. The refrigerant flow path comprises: the condenser 14, the third throttling element 10, the housing of the second heat exchanger 9, the second heat conducting element 8, the evaporator and the fan 7 are turned on. The working principle of the cooling circuit is that the refrigerant liquid is taken from the condenser 14, throttled and cooled by the third throttling part 10 and then enters the shell of the second heat exchanger 9, and the refrigerant exchanges heat with the upper part of the second heat conduction part 8 in the liquid cooling space, so that the temperature of the second heat conduction part 8 is reduced. Because the temperature of the throttled refrigerant is lower, the heat pipe has a constant temperature, so that the second heat conduction component 8 and the refrigerant can obtain a lower temperature after heat exchange, hot humid air in the space of the box body of the electric appliance component 18 hits the second heat conduction component 8 which is colder, and water vapor in the hot air is condensed into water condensate on the surface of the second heat conduction component 8, thereby playing a role of dehumidification and reducing the humidity in the space. After the condensed water is gathered, the condensed water is discharged through the condensed water diversion liquid seal 12, and the condensed water diversion liquid seal 12 utilizes the principle of liquid seal to prevent external air from entering the space of the box body of the electric appliance assembly 18, thereby playing a role in sealing.
The compressor operating power changes, the heating value of the electric component 5 changes along with the change, and different cooling control modes are operated according to the change of the heating value.
The refrigerant circulation system further includes a second temperature detecting part, a third throttling part 10 and a controller. The second temperature detecting means is configured to detect a temperature t2 within the box space of the electrical component 18; a third throttling part 10 arranged in a pipeline connecting the second heat exchanger 9 and the condenser 14; the controller is in signal connection with the second temperature detecting means and the third throttling means 10, respectively, and is configured to:
when the third throttling part 10 is in a closed state and the temperature T2 is less than or equal to the target temperature T2, keeping the third throttling part 10 in the closed state so as to enable the system for cooling the space in the box body of the electric appliance assembly 18 to operate in the first working mode;
when the third throttling part 10 is in the closed state and the temperature T2 is higher than the target temperature T2, the third throttling part 10 is opened so that the system for cooling the space in the box body of the electric appliance assembly 18 runs in the second working mode;
when the third throttling part 10 is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening of the third throttling part 10 is larger than the minimum opening, the third throttling part 10 is kept in the open state, so that the system for cooling the space in the box body of the electric appliance assembly 18 runs in the second working mode;
when the third throttling part 10 is in an open state and the temperature T2 is less than the target temperature T2, and the opening of the third throttling part 10 reaches the minimum opening, the third throttling part 10 is closed, so that the system for cooling the space in the box body of the electric appliance assembly 18 operates in the first operation mode.
The refrigerant circulation system further includes a flash tank 16, a fourth throttling part 15 provided in a line connecting the flash tank 16 and the condenser 14, and a fifth throttling part 17 provided in a line connecting the flash tank 16 and the evaporator 19.
The control method of the refrigerant circulation system comprises the following steps:
detecting the temperature t1 of the electrical component 5 and the on-off state of the control valve 11;
when the control valve 11 is in an open state and the temperature T1 is greater than the target temperature T1 and the opening of the second throttling part 2 reaches the maximum opening, closing the control valve 11 and opening the first throttling part 13 so as to enable the refrigerant flow path for cooling the electric appliance part 5 to operate in the second working mode;
when the control valve 11 is in a closed state and the temperature T1 is less than or equal to the target temperature T1 and the opening of the first throttling part 13 is larger than the minimum opening, the control valve 11 is kept in the closed state so as to enable the refrigerant flow path for cooling the electric appliance part 5 to operate in the second working mode;
when the control valve 11 is in the closed state and the temperature T1 is less than the target temperature T1 and the opening degree of the first throttle member 13 reaches the minimum opening degree, the control valve 11 is opened so that the refrigerant flow path for cooling the electric component 5 operates in the second operation mode.
The control method further comprises the following steps:
detecting the temperature t2 in the box body space of the electric appliance assembly 18 and the switching state of a third throttling part 10 arranged in a pipeline of the second heat exchanger 9 and the condenser 14 connected with the box body space of the electric appliance assembly 18 for cooling;
when the third throttling part 10 is in a closed state and the temperature T2 is less than or equal to the target temperature T2, keeping the third throttling part 10 in the closed state so as to enable the system for cooling the space in the box body of the electric appliance assembly 18 to operate in the first working mode;
when the third throttling part 10 is in the closed state and the temperature T2 is higher than the target temperature T2, the third throttling part 10 is opened so that the system for cooling the space in the box body of the electric appliance assembly 18 runs in the second working mode;
when the third throttling part 10 is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening of the third throttling part 10 is larger than the minimum opening, the third throttling part 10 is kept in the open state, so that the system for cooling the space in the box body of the electric appliance assembly 18 runs in the second working mode;
when the third throttling part 10 is in an open state and the temperature T2 is less than the target temperature T2, and the opening of the third throttling part 10 reaches the minimum opening, the third throttling part 10 is closed, so that the system for cooling the space in the box body of the electric appliance assembly 18 operates in the first operation mode.
In some embodiments, a humidity sensor is installed in the box body of the electrical component 18, and the controller is in signal connection with the humidity sensor, so as to start a dehumidification mode when the detected humidity value is greater than a predetermined value, or periodically start the dehumidification mode, so that lower humidity in the electrical box space 18 of the compressor is ensured, and the condensation problem is avoided.
Through the comprehensive control of the cooling mode and the dehumidification mode, the space temperature of the frequency converter heating device and the space temperature of the compressor electric box are in a proper range, the humidity in the space of the compressor electric box is controlled, and the compressor is effectively and thermally managed and controlled, so that safe and reliable operation of the compressor is ensured.
The foregoing is illustrative of the present utility model and is not to be construed as limiting thereof, but rather, any modification, equivalent replacement, improvement or the like which comes within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Claims (14)
1. A refrigerant circulation system, comprising:
a compressor (1);
-an electrical assembly (18) comprising an electrical component (5) electrically connected to the compressor (1);
a condenser (14) connected to the exhaust port of the compressor (1);
a first heat exchanger (4) configured to exchange heat with the electrical component (18) and connected with the condenser (14);
a first throttling part (13) arranged in a pipeline connecting the condenser (14) and the first heat exchanger (4);
a second throttling part (2) connected with the first heat exchanger (4) and positioned at the downstream of the first heat exchanger (4) along the refrigerant flowing direction; and
-a control valve (11) comprising an inlet connected to the condenser (14) and an outlet connected to the first heat exchanger (4), the control valve (11) being bypassed to the first throttling element (13).
2. The refrigerant circulation system according to claim 1, further comprising:
a first temperature detection means configured to detect a temperature t1 of the electrical component (5);
a controller in signal connection with the first temperature detecting part and the control valve (11), respectively, and configured to:
when the control valve (11) is in an open state and the temperature T1 is less than or equal to the target temperature T1, the control valve (11) is kept in the open state; or (b)
When the control valve (11) is in an open state, the temperature T1 is greater than a target temperature T1, and the opening degree of the second throttling component (2) reaches a maximum opening degree, closing the control valve (11) and opening the first throttling component (13); or (b)
When the control valve (11) is in a closed state, the temperature T1 is less than or equal to the target temperature T1, and the opening degree of the first throttling component (13) is larger than the minimum opening degree, the control valve (11) is kept in the closed state; or (b)
When the control valve (11) is in a closed state, the temperature T1 is less than a target temperature T1, and the opening degree of the first throttle member (13) reaches a minimum opening degree, the control valve (11) is opened.
3. Refrigerant circulation system according to claim 1, characterized in that the first heat exchanger (4) is in abutment with the electrical component (5) for cooling the electrical component (5).
4. Refrigerant circulation system according to claim 1, characterized in that the compressor (1) comprises a compression device and a motor in driving connection with the compression device, the electrical component (5) comprising a motor control device in electrical connection with the motor.
5. The refrigerant circulating system as recited in claim 4, wherein said motor control device includes a frequency converter.
6. The refrigerant circulation system according to claim 1, further comprising an air-cooled radiator (6) exchanging heat with the electrical component (18).
7. The refrigerant circulation system of claim 6, wherein the electrical component (18) further comprises a housing for housing the electrical component (5), the air-cooled heat sink (6) comprising a first portion located within the housing in heat exchange with air within the housing and a second portion located outside the housing in heat exchange with air outside the housing.
8. The refrigerant circulation system of claim 7, wherein the air-cooled heat sink (6) comprises a first thermally conductive member comprising a first portion that exchanges heat with air within the housing of the electrical component (18) and a second portion that is located outside the housing and configured to exchange heat with air outside the housing.
9. The refrigerant circulation system according to any one of claims 1 to 4 and 6 to 8, further comprising a second heat exchanger (9) for cooling the electrical component (18) by means of a throttled refrigerant.
10. Refrigerant circulation system according to claim 9, characterized in that it further comprises a water receiving member (12) located below the second heat exchanger (9).
11. Refrigerant circulation system according to claim 10, characterized in that the water outlet of the water receiving part (12) is provided with a liquid seal.
12. The refrigerant circulation system according to claim 9, further comprising:
a second temperature detection component configured to detect a temperature t2 within a box space of the electrical component (18);
a third throttling element (10) arranged in a line connecting the second heat exchanger (9) and the condenser (14);
a controller in signal connection with the second temperature detecting means and the third throttling means (10), respectively, and configured to:
when the third throttling component (10) is in a closed state and the temperature T2 is less than or equal to the target temperature T2, keeping the third throttling component (10) in the closed state; or (b)
Opening the third throttling element (10) when the third throttling element (10) is in a closed state and the temperature T2 is greater than a target temperature T2; or (b)
When the third throttling part (10) is in an opening state, the temperature T2 is less than or equal to a target temperature T2, and the opening degree of the third throttling part (10) is larger than the minimum opening degree, the third throttling part (10) is kept in the opening state; or (b)
When the third throttling component (10) is in an opening state, the temperature T2 is less than the target temperature T2, and the opening degree of the third throttling component (10) reaches the minimum opening degree, the third throttling component (10) is closed.
13. Refrigerant circulation system according to claim 9, characterized in that said second heat exchanger (9) comprises:
the second heat conduction component (8) comprises a first part for exchanging heat with air in the box body of the electric appliance component (18) and a second part for exchanging heat with a refrigerant;
a housing configured to provide a second portion of the second heat conducting member (8) therein and to be connected with the condenser (14);
a third throttling element (10) is arranged in the pipeline connecting the condenser (14) and the shell.
14. An air conditioning apparatus comprising the refrigerant circulation system according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223004546.3U CN219037114U (en) | 2022-11-11 | 2022-11-11 | Refrigerant circulation system and air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223004546.3U CN219037114U (en) | 2022-11-11 | 2022-11-11 | Refrigerant circulation system and air conditioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219037114U true CN219037114U (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223004546.3U Active CN219037114U (en) | 2022-11-11 | 2022-11-11 | Refrigerant circulation system and air conditioning equipment |
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| Country | Link |
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| CN (1) | CN219037114U (en) |
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