CN115615024A - Refrigerant circulating system, control method thereof and air conditioning equipment - Google Patents
Refrigerant circulating system, control method thereof and air conditioning equipment Download PDFInfo
- Publication number
- CN115615024A CN115615024A CN202211411716.1A CN202211411716A CN115615024A CN 115615024 A CN115615024 A CN 115615024A CN 202211411716 A CN202211411716 A CN 202211411716A CN 115615024 A CN115615024 A CN 115615024A
- Authority
- CN
- China
- Prior art keywords
- component
- temperature
- throttling
- control valve
- opening degree
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20354—Refrigerating circuit comprising a compressor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a refrigerant circulating system, a control method thereof and air conditioning equipment, wherein the refrigerant circulating system comprises: a compressor (1); an appliance assembly (18) comprising an appliance component (5) electrically connected to the compressor (1); a condenser (14) connected to an exhaust port of the compressor (1); a first heat exchanger (4) configured to exchange heat with the electrical component (18) and connected to the condenser (14); a first throttling member (13) arranged in a line 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 a refrigerant; the control valve (11) comprises an inlet connected with the condenser (14) and an outlet connected with the first heat exchanger (4), the control valve (11) bypasses the first throttling component (13), and the problem that condensed water occurs to electrical components due to the fact that the temperature is too low in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of engineering, in particular to a refrigerant circulating system, a control method thereof and air conditioning equipment.
Background
The integrated centrifugal compressor integrates the frequency converter into the compressor, the space of the airborne frequency converter is saved, the unit structure is more compact, the size is smaller, and the integrated compressor is the first-choice scheme of the modular unit.
On the integrated compressor, the IGBT, the switching power supply, the capacitor and the like of the motor and the frequency converter belong to heating devices, the temperature of the devices is too high, the capacity of the devices is reduced, even the devices are failed to be normally used, and the compressor needs to be subjected to thermal management control to ensure the normal and reliable operation of the compressor. The cooling scheme that uses commonly at present is that get high pressure, the refrigerant liquid of high temperature from the unit condenser, be used for the cooling of above-mentioned device after the throttle cooling, then the refrigerant gets into the lower position of pressure on the unit, this scheme cooling capacity is big, can ensure to cool fully, the problem of device overtemperature has been avoided, but because the refrigerant temperature after the throttle is lower, when the lower refrigerant of temperature gets into compressor cooling structure, can lead to cooling structure surface temperature lower, when cooling structure ambient temperature is higher relatively and humidity is great, the condition of condensation can appear, there is the condensation water on the electrical part, can lead to the compressor often to break down, unable normal work, arouse the device short circuit even and burn out serious problem.
Disclosure of Invention
The invention aims to provide a refrigerant circulating system, a control method thereof and air conditioning equipment, so as to solve the problem that condensed water is generated due to over-low temperature of an electrical component in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a refrigerant circulation system including:
a compressor;
an electrical component including an electrical component electrically connected to the compressor;
the condenser is connected with an exhaust port of the compressor;
the first heat exchanger is configured to exchange heat with the electrical component and is connected with the condenser;
the first throttling component is arranged in a pipeline connecting the condenser and the first heat exchanger;
the second throttling part is connected with the first heat exchanger and is positioned at the downstream of the first heat exchanger along the flow 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 the control valve bypasses the first throttling component.
In some embodiments, the refrigerant circulation system further includes:
a first temperature detection part configured to detect a temperature t1 of the electrical part;
a controller in signal connection with the first temperature detection 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, keeping the control valve in the open state; or
When the control valve is in an open state, the temperature T1 is greater than the target temperature T1, and the opening degree of the second throttling component reaches the maximum opening degree, closing the control valve and opening the first throttling component; or
When the control valve 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 is greater than the minimum opening degree, the control valve is kept in the closed state; or
When the control valve is in a closed state, the temperature T1< the target temperature T1, and the opening degree of the first throttling member reaches a 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 comprises a frequency converter.
In some embodiments, the cooling medium circulation system further comprises an air-cooled radiator which exchanges heat with the electrical components.
In some embodiments, the electrical assembly further comprises a case for housing the electrical component, and the air-cooled heat sink comprises a first portion located within the case for exchanging heat with air within the case and a second portion located outside the case for exchanging heat with air outside the case.
In some embodiments, the air-cooled heat sink includes a first heat conducting member including a first portion in heat exchange with air within the enclosure of the electrical component and a second portion located outside the enclosure and configured to be in heat exchange with air outside the enclosure.
In some embodiments, the refrigerant circulation system further includes a second heat exchanger for cooling the electrical components by using the throttled refrigerant.
In some embodiments, the refrigerant circulation system further comprises a water receiving part located below the second heat exchanger.
In some embodiments, the water outlet of the water receiving part is provided with a liquid sealing structure.
In some embodiments, the refrigerant circulation system further includes:
a second temperature detection part configured to detect a temperature t2 in a box space of the electric appliance component;
a third throttling element disposed in the line connecting the second heat exchanger and the condenser;
a controller in signal connection with the second temperature detection 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, keeping the third throttling component in the closed state; or
When the third throttling component is in a closed state, and the temperature T2 is greater than the target temperature T2, the third throttling component is opened; or
When the third throttling component is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component is greater than the minimum opening degree, keeping the third throttling component in the open state; or
And when the third throttling component is in an open 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, closing the third throttling component.
In some embodiments, the second heat exchanger comprises:
the second heat conducting part comprises a first part for exchanging heat with air in the box body of the electrical appliance assembly and a second part for exchanging heat with a refrigerant;
a housing configured to dispose a second portion of the second guide member therein and connected to the condenser;
a third throttling element is arranged in the pipeline connecting the condenser and the shell.
According to another aspect of the present invention, an air conditioning apparatus is also provided, and the air conditioning apparatus includes the refrigerant circulation system.
According to another aspect of the present invention, there is provided a method for controlling the refrigerant circulation system, in some embodiments, the method includes:
detecting the temperature t1 of the electric appliance component and the on-off state of the 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, keeping the control valve in the open state; or
When the control valve is in an open state, the temperature T1 is greater than the target temperature T1, and the opening degree of the second throttling component reaches the maximum opening degree, closing the control valve and opening the first throttling component; or
When the control valve 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 is greater than the minimum opening degree, the control valve is kept in the closed state; or
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 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 electrical component and the on-off state of a third throttling component arranged in a pipeline which is connected with a second heat exchanger for cooling the box body space of the electrical component and a condenser;
when the third throttling component is in a closed state and the temperature T2 is less than or equal to the target temperature T2, keeping the third throttling component in the closed state; or
When the third throttling component is in a closed state, and the temperature T2 is greater than the target temperature T2, the third throttling component is opened; or
When the third throttling component is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component is greater than the minimum opening degree, keeping the third throttling component in the open state; or
And when the third throttling component is in an open 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, closing the third throttling component.
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 components; the refrigerant after the condensation in the condenser is the electrical components cooling through the first heat exchanger of control valve flow direction when the control valve is opened, and the refrigerant circulation system of this embodiment can adjust the temperature for the refrigerant of electrical components cooling, is favorable to solving because of the problem that the temperature of electrical components is low excessively and the comdenstion water appears.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a refrigerant circulation system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the refrigerant cycle system of the present embodiment includes a compressor 1, an electrical component 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; a first throttling member 13 is provided in a line connecting the condenser 14 and the first heat exchanger 4; the second throttling component 2 is connected with the first heat exchanger 4 and is positioned at the downstream of the first heat exchanger 4 along the flow 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 bypassing the first throttling member 13.
In this embodiment, when the control valve 11 is in a closed state, the refrigerant output from the condenser 14 is throttled by the first throttling component 13, evaporated in the first heat exchanger 4, and cooled for the electrical component 5; when the control valve 11 is opened, the refrigerant condensed in the condenser 14 flows to the first heat exchanger 4 through the control valve 11 to cool the electrical component 5, and the refrigerant circulating system of the embodiment can adjust the temperature of the refrigerant cooled by the electrical component 5, so that the problem of condensate water caused by too low temperature of the electrical component 5 is solved.
The refrigerant circulating system also comprises a bypass throttling part 3 which bypasses the second throttling part 2 and is connected with the second throttling part in parallel.
The refrigerant circulation system further includes an evaporator 19, and in some embodiments, the outlet of the second throttling part 2 and/or the bypass throttling part 3 is connected with the evaporator 19. An outlet of the evaporator 19 is connected to a suction port of the compressor 1, and the refrigerant evaporated in the evaporator 19 is sent to the compressor 1 and compressed again.
In the present embodiment, the cooling medium flow path for cooling the electrical component 5 has two operation modes.
In the first operation mode, the first throttling component 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 component 2 plays a role in adjusting the flow rate of the refrigerant, and the bypass throttling component 3 plays a role in assisting in increasing the flow rate of the refrigerant. If the flow of the second throttling element 2 is sufficient, the bypass throttling element 3 can be eliminated. The working principle of the refrigerant flow path is as follows: refrigerant liquid is taken from the condenser 14 and enters the first heat exchanger 4 through the control valve 11, the refrigerant exchanges heat with the electrical part 5 through the first heat exchanger 4 to cool the electrical part 5, and then the refrigerant 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 caused by too low temperature of the electric appliance part 5 can be avoided, and the low-power running 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 13-first heat exchanger 4-second throttle 2 and/or bypass throttle 3-evaporator. The working principle of the refrigerant flow path is as follows: 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 electrical component 5 by the first heat exchanger 4 to cool the electrical component 5, and 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 throttling component 13 plays the roles of throttling and adjusting the cooling capacity, and the opening degree is adjusted according to the cooling demand. The cooling mode has the advantages that a refrigerant with lower temperature can be obtained after throttling by the first throttling part 13, latent heat of the refrigerant is fully utilized, larger cooling capacity can be obtained, and high-power operation of the compressor is met.
The refrigerant circulation system also comprises a first temperature detection part and a controller. The first temperature detection part is configured to detect a temperature t1 of the electrical part 5; the controller is in signal connection with the first temperature detection component and the control valve 11, respectively, and is configured to:
when the control valve 11 is in the 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 that the refrigerant flow path for cooling the electrical component 5 operates in the first working mode;
when the control valve 11 is in an open state, the temperature T1 is greater than the target temperature T1, and the opening degree of the second throttling component 2 reaches the maximum opening degree, closing the control valve 11 and opening the first throttling component 13 to enable the refrigerant flow path for cooling the electrical component 5 to operate in the second working mode;
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 greater than the minimum opening degree, the control valve 11 is kept in the closed state, so that the refrigerant flow path for cooling the electrical component 5 operates in the second working mode;
when the control valve 11 is in the closed state, the temperature T1 is less than the target temperature T1, and the opening degree of the first throttling part 13 reaches the minimum opening degree, the control valve 11 is opened to operate the second operation mode for the refrigerant flow path for cooling the electrical component 5.
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 in driving connection with the compression device, and the electrical component 5 comprises a motor control device in electrical connection with the motor. In some embodiments, the motor control device comprises a frequency converter.
The refrigerant circulating system also comprises an air-cooled radiator 6 which exchanges heat with the electrical component 18.
In some embodiments, the electrical assembly 18 further comprises a case for housing the electrical component 5, and the air-cooled heat sink 6 comprises a first portion located within the case for exchanging heat with air within the case and a second portion located outside the case for exchanging heat with air outside the case.
In some embodiments, the air-cooled heat sink 6 includes a first heat conducting member including a first portion in heat exchange with air within the enclosure of the electrical component 18 and a second portion located outside the enclosure and configured to be in heat exchange with air outside the enclosure. The second part of the first heat conducting component exchanges heat with the air outside the box body, and the second part radiates heat into the air outside the box body. In some embodiments, the first heat conducting member is a heat pipe that exchanges heat with air outside the case (natural cooling).
The refrigerant circulating system further comprises a second heat exchanger 9 for cooling the electrical component 18 by using the throttled refrigerant. The second heat exchanger 9 cools the space inside the box of the electrical component 18.
The cooling medium circulation system further comprises a fan 7 for driving the air in the electrical component 18 to the air-cooled radiator 6 and the second heat exchanger 9.
The refrigerant circulating system further includes a water receiving part 12 positioned below the second heat exchanger 9. The water outlet of the water receiving part 12 is provided with a liquid seal structure. The box body of the electrical component 18 is sealed by using a liquid seal principle, so that external air is prevented from entering the space of the box body, and a sealing effect is achieved.
The second heat exchanger 9 comprises a second heat-conducting part 8 and a shell, and the second heat-conducting part comprises a first part for exchanging heat with air in the box body of the electrical component 18 and a second part for exchanging heat with a refrigerant; the casing is configured to dispose the second portion of the second heat conduction member 8 therein, and is connected to the condenser 14; a third throttling part 10 is provided in a pipe connecting the condenser 14 and the case.
In some embodiments, the second heat conducting member 8 is a heat pipe, and a portion of the heat pipe exchanges heat with the refrigerant in the housing to achieve cooling.
The system for cooling the space within the cartridge body of the appliance assembly 18 has three modes of operation.
In the first working mode, the third throttling element 10 is closed, the fan 7 is opened, the fan makes hot air in the space of the box body of the electrical component 18 flow, the hot air and the air-cooled radiator 6 exchange heat, and the air-cooled radiator 6 radiates heat in the space of the box body of the electrical component 18 to the environment, so that the space of the box body of the electrical component 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 element 10 is turned on, the fan 7 is turned on, and the refrigerant flow path is: condenser 14-third throttling element 10-shell 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, throttled and cooled by the third throttling part 10 and then enters the shell of the second heat exchanger 9, the refrigerant exchanges heat with the second part of the second heat conducting part 8 in the shell of the second heat exchanger 9 to cool the second heat conducting part 8, the first part of the second heat conducting part 8 exchanges heat with hot air in the box body of the electrical component 18 to cool the space in the box body of the electrical component of the compressor 1, and finally the refrigerant enters the evaporator. The third throttling component 10 plays a role in throttling and adjusting cooling capacity, and the opening degree is adjusted according to the 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 operating mode, when the humidity in the space of the box of the electrical component 18 is high, the dehumidification mode (third operating mode) may be turned on to reduce the humidity in the space in order to prevent the electrical component therein from being condensed. The refrigerant flow path comprises: condenser 14-third throttling element 10-shell of second heat exchanger 9-second heat-conducting element 8-evaporator, fan 7 is turned on. The working principle of the cooling loop is that refrigerant liquid is taken from the condenser 14, throttled and cooled by the third throttling component 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 conducting component 8 in the liquid cooling space, so that the second heat conducting component 8 is cooled. Because the throttled refrigerant has a low temperature and the heat pipe has a constant temperature, the second heat conducting part 8 and the refrigerant can obtain a low temperature after heat exchange, hot humid air in the space of the box body of the electrical component 18 touches the cold second heat conducting part 8, and water vapor in the hot air is condensed into water condensation on the surface of the second heat conducting part 8, so that the dehumidifying effect is achieved, and the humidity in the space is reduced. 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 prevents external air from entering the space of the box body of the electrical component 18 by utilizing the principle of liquid seal, thereby playing the role of sealing.
The compressor operation power is changed, the heat generation amount of the electrical component 5 is changed accordingly, and different cooling control modes are operated according to the change of the heat generation amount.
The refrigerant circulating system further includes a second temperature detecting part, a third throttling part 10 and a controller. The second temperature detection means is configured to detect a temperature t2 within the box space of the electrical component 18; a third throttling element 10, provided in the line connecting the second heat exchanger 9 and the condenser 14; the controller is in signal connection with the second temperature detecting part and the third throttling part 10, respectively, and is configured to:
when the third throttling component 10 is in the closed state and the temperature T2 is less than or equal to the target temperature T2, the third throttling component 10 is kept in the closed state, so that the system for cooling the space in the box body of the electrical component 18 operates in the first working mode;
when the third throttling component 10 is in the closed state, and the temperature T2 is greater than the target temperature T2, the third throttling component 10 is turned on, so that the system for cooling the space in the box body of the electrical component 18 operates in the second working mode;
when the third throttling component 10 is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component 10 is greater than the minimum opening degree, the third throttling component 10 is kept in the open state, so that the system for cooling the space in the box body of the electrical component 18 operates in the second working mode;
when the third throttling part 10 is in an open state, the temperature T2 is less than the target temperature T2, and the opening degree of the third throttling part 10 reaches a minimum opening degree, the third throttling part 10 is closed, so that the system for cooling the space in the box body of the electrical component 18 operates in the first working mode.
The refrigerant cycle system further includes a flash tank 16, a fourth throttling part 15 provided in a pipe line connecting the flash tank 16 and the condenser 14, and a fifth throttling part 17 provided in a pipe 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, the temperature T1 is greater than the target temperature T1, and the opening degree of the second throttling component 2 reaches the maximum opening degree, closing the control valve 11 and opening the first throttling component 13 to enable the refrigerant flow path for cooling the electrical component 5 to operate in the second working mode;
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 greater than the minimum opening degree, the control valve 11 is kept in the closed state, so that the refrigerant flow path for cooling the electrical component 5 operates in the second working mode;
when the control valve 11 is in the closed state, the temperature T1 is less than the target temperature T1, and the opening degree of the first throttling component 13 reaches the minimum opening degree, the control valve 11 is opened, so that the refrigerant flow path for cooling the electrical 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 electrical component 18 and the on-off state of a third throttling component 10 arranged in a pipeline which is connected with a second heat exchanger 9 for cooling the box body space of the electrical component 18 and a condenser 14;
when the third throttling component 10 is in the closed state and the temperature T2 is less than or equal to the target temperature T2, the third throttling component 10 is kept in the closed state, so that the system for cooling the space in the box body of the electrical component 18 operates in the first working mode;
when the third throttling component 10 is in the closed state, and the temperature T2 is greater than the target temperature T2, the third throttling component 10 is turned on, so that the system for cooling the space in the box body of the electrical component 18 operates in the second working mode;
when the third throttling component 10 is in the open state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component 10 is greater than the minimum opening degree, the third throttling component 10 is kept in the open state, so that the system for cooling the space in the box body of the electrical component 18 operates in the second working mode;
when the third throttling part 10 is in an open state, the temperature T2 is less than the target temperature T2, and the opening degree of the third throttling part 10 reaches a minimum opening degree, the third throttling part 10 is closed, so that the system for cooling the space in the box body of the electrical component 18 operates in the first working mode.
In some embodiments, a humidity sensor is installed in the box of the electrical component 18, and the controller is in signal connection with the humidity sensor to start the dehumidification mode when the detected humidity value is greater than a predetermined value, or to periodically start the dehumidification mode, so as to ensure a lower humidity in the compressor electrical box space 18 and avoid the condensation problem.
Through the comprehensive control of the cooling mode and the dehumidification mode, the temperature of the heating device of the frequency converter and the space of the electric box of the compressor is in a proper range, the humidity in the space of the electric box of the compressor is controlled, the compressor is subjected to effective thermal management control, and the safe and reliable operation of the compressor is ensured.
The present invention is not intended to be limited to the above exemplary embodiments but rather to be construed in breadth and scope in accordance with the appended claims.
Claims (16)
1. A refrigerant circulation system, comprising:
a compressor (1);
an appliance assembly (18) comprising an appliance component (5) electrically connected to the compressor (1);
a condenser (14) connected to an exhaust port of the compressor (1);
a first heat exchanger (4) configured to exchange heat with the electrical component (18) and connected to the condenser (14);
a first throttling member (13) arranged in a line connecting the condenser (14) and the first heat exchanger (4);
the second throttling component (2) is connected with the first heat exchanger (4) and is positioned at the downstream of the first heat exchanger (4) along the flow direction of the refrigerant; 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) bypassing the first throttling means (13).
2. The refrigerant circulation system as claimed in claim 1, further comprising:
a first temperature detection part configured to detect a temperature t1 of the electrical part (5);
a controller in signal connection with the first temperature detection component 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, keeping the control valve (11) in the open state; or
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
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 greater than the minimum opening degree, the control valve (11) is kept in the closed state; or
And when the control valve (11) is in a closed state, the temperature T1 is less than the target temperature T1, and the opening degree of the first throttling component (13) reaches a minimum opening degree, the control valve (11) is opened.
3. The coolant circulation system according to claim 1, wherein the first heat exchanger (4) is abutted against the electrical component (5) to cool the electrical component (5).
4. The refrigerant circulation system according to claim 1, wherein the compressor (1) includes a compression device and a motor drivingly connected to the compression device, and the electrical component (5) includes a motor control device electrically connected to the motor.
5. The refrigerant circulation system as claimed in claim 4, wherein the motor control device comprises an inverter.
6. The refrigerant circulation system as claimed in claim 1, further comprising an air-cooled radiator (6) for exchanging heat with the electrical component (18).
7. The coolant circulation system according to claim 6, wherein the electrical component (18) further comprises a housing for receiving the electrical component (5), and the air-cooled heat sink (6) comprises a first portion located within the housing for exchanging heat with air inside the housing and a second portion located outside the housing for exchanging heat with air outside the housing.
8. The coolant circulation system according to claim 7, wherein the air-cooled radiator (6) includes a first heat conducting part including a first portion for exchanging heat with air inside the case of the electrical component (18) and a second portion located outside the case and configured to exchange heat with air outside the case.
9. The coolant 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 using the throttled coolant.
10. The refrigerant circulation system as claimed in claim 9, further comprising a water receiving part (12) located below the second heat exchanger (9).
11. The coolant circulation system according to claim 10, wherein the water outlet of the water receiving member (12) is provided with a liquid seal structure.
12. The refrigerant circulation system as claimed in claim 9, further comprising:
a second temperature detection means configured to detect a temperature t2 in a box space of the electric appliance component (18);
-third throttling means (10) arranged in the line connecting said second heat exchanger (9) and said condenser (14);
a controller in signal connection with the second temperature detection component and the third throttling component (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
When the third throttling component (10) is in a closed state, and the temperature T2 is greater than the target temperature T2, the third throttling component (10) is opened; or
When the third throttling component (10) is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component (10) is greater than the minimum opening degree, keeping the third throttling component (10) in the open state; or
And when the third throttling component (10) is in an open 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, closing the third throttling component (10).
13. The refrigerant circulation system as claimed in claim 9, wherein the second heat exchanger (9) comprises:
the second heat conducting component (8) comprises a first part for exchanging heat with air in the box body of the electrical appliance component (18) and a second part for exchanging heat with a refrigerant;
a housing configured to dispose a second portion of the second guide member (8) therein and connected to the condenser (14);
a third throttling element (10) is arranged in a pipeline connecting the condenser (14) and the shell.
14. An air conditioning apparatus, characterized by comprising the refrigerant circulation system according to any one of claims 1 to 13.
15. A method for controlling a refrigerant circulation system as claimed in any one of claims 1 to 13, comprising:
detecting the temperature t1 of the electrical component (5) and the switch state of the control valve (11);
when the control valve (11) is in an open state and the temperature T1 is less than or equal to the target temperature T1, keeping the control valve (11) in the open state; or
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 part (2) reaches a maximum opening degree, closing the control valve (11) and opening the first throttling part (13); or
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 greater than the minimum opening degree, the control valve (11) is kept in the closed state; or
And when the control valve (11) is in a closed state, the temperature T1 is less than the target temperature T1, and the opening degree of the first throttling component (13) reaches a minimum opening degree, the control valve (11) is opened.
16. The control method according to claim 15, characterized by further comprising:
detecting the temperature t2 in the box body space of the electrical component (18) and the on-off state of a third throttling component (10) arranged in a pipeline which is connected with a second heat exchanger (9) for cooling the box body space of the electrical component (18) and the condenser (14);
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
When the third throttling component (10) is in a closed state, and the temperature T2 is greater than the target temperature T2, the third throttling component (10) is opened; or
When the third throttling component (10) is in an open state, the temperature T2 is less than or equal to the target temperature T2, and the opening degree of the third throttling component (10) is greater than the minimum opening degree, keeping the third throttling component (10) in the open state; or
And when the third throttling component (10) is in an open 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, closing the third throttling component (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211411716.1A CN115615024A (en) | 2022-11-11 | 2022-11-11 | Refrigerant circulating system, control method thereof and air conditioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211411716.1A CN115615024A (en) | 2022-11-11 | 2022-11-11 | Refrigerant circulating system, control method thereof and air conditioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115615024A true CN115615024A (en) | 2023-01-17 |
Family
ID=84878627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211411716.1A Pending CN115615024A (en) | 2022-11-11 | 2022-11-11 | Refrigerant circulating system, control method thereof and air conditioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115615024A (en) |
-
2022
- 2022-11-11 CN CN202211411716.1A patent/CN115615024A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3798538B1 (en) | Cooling system and control method therefor | |
| EP3929500B1 (en) | Air conditioner control method and device, and air conditioner | |
| CN101529172B (en) | Heat source device, heat source system, and method of operating heat source device | |
| US4932221A (en) | Air-cooled cooling apparatus | |
| JP7178482B2 (en) | Compressor system and its control method | |
| CN107328002A (en) | The air conditioner heat pump system and its working method of a kind of temperature control throttling | |
| JPH01239350A (en) | Refrigerating cycle device | |
| CN219037114U (en) | Refrigerant circulation system and air conditioning equipment | |
| CN116885347A (en) | Battery thermal management system of electric forklift and control method thereof | |
| CN115615024A (en) | Refrigerant circulating system, control method thereof and air conditioning equipment | |
| KR20050026591A (en) | Refrigerant heating type air conditioner | |
| CN112234803A (en) | Frequency converter, refrigeration system and control method thereof | |
| CN218787645U (en) | Refrigerant circulation system and air conditioning equipment | |
| JP3637106B2 (en) | Gas engine driven air conditioner | |
| CN107560041B (en) | Water chilling unit | |
| CN217037817U (en) | Double-cold-source multi-system air conditioner | |
| US20200200445A1 (en) | Supplemental cooling for an hvac system | |
| CN220155618U (en) | Battery thermal management temperature control system | |
| CN220815978U (en) | Compressor condensation preventing device for water chilling unit and water chilling unit | |
| CN115978843A (en) | Refrigerant circulation system, air conditioning equipment and control method of refrigerant circulation system | |
| CN217737372U (en) | Air conditioner outdoor unit and heat pump system | |
| CN210165600U (en) | Single-cooling type heat recovery system | |
| CN216080455U (en) | Water chilling unit | |
| CN114454778A (en) | Electric engineering vehicle and thermal management system thereof | |
| CN219181965U (en) | Heat radiation system of power module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |