CN211926200U - Pressure regulator, outdoor unit and air conditioning system - Google Patents
Pressure regulator, outdoor unit and air conditioning system Download PDFInfo
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- CN211926200U CN211926200U CN202020216548.0U CN202020216548U CN211926200U CN 211926200 U CN211926200 U CN 211926200U CN 202020216548 U CN202020216548 U CN 202020216548U CN 211926200 U CN211926200 U CN 211926200U
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Abstract
The application relates to a pressure regulator, off-premises station, air conditioning system, wherein pressure regulator includes: a pressure regulating tank; the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet; the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly; the pressure regulating tank is provided with a heating device for evaporating the liquid refrigerant entering the pressure regulating tank into a gaseous refrigerant; the gaseous refrigerant outlet is communicated with a compressor in the outdoor unit through a second flow direction control assembly. Based on this, because the liquid refrigerant flows into the pressure regulating tank under the action of the pressure in the gas-liquid separator, and is separated from the low-pressure side of the air conditioning system through the first flow direction control assembly and the second flow direction control assembly, the phenomenon that the low-pressure side pressure is greatly improved due to forced heating in the prior art is controllable to a certain extent, and therefore the influence caused by the large improvement of the low-pressure side pressure can be effectively avoided.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a pressure regulator, an outdoor unit and an air conditioning system.
Background
In the long-term heating operation process of a conventional multi-split air conditioning system in a low-temperature environment, a heat exchanger of an outdoor unit gradually frosts, so that incomplete evaporation of a refrigerant is caused, accumulated liquid is gradually formed in a gas-liquid separator, the quantity of circulating refrigerants in the air conditioning system is gradually reduced, the heat exchange capacity of an indoor unit is gradually attenuated, and the defrosting frequency is increased.
Conventionally, an electric heating belt is generally added around the gas-liquid separator or an electric heating pipe is added in the gas-liquid separator to forcibly heat and evaporate the liquid refrigerant accumulated in the gas-liquid separator, but the forced heating evaporation method greatly increases the pressure on the low-pressure side of the air conditioning system and reduces the heat exchange effect on the evaporation side.
SUMMERY OF THE UTILITY MODEL
To overcome at least some of the problems of the related art, the present application provides a pressure regulator, an outdoor unit, an air conditioning system, and a control method of the air conditioning system.
According to a first aspect of the present application, there is provided a pressure regulator applied to an outdoor unit, comprising:
a pressure regulating tank;
the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet; the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly, so that the liquid refrigerant in the gas-liquid separator enters the pressure regulating tank through the first flow direction control assembly and the liquid refrigerant inlet by controlling the state of the first flow direction control assembly;
the pressure regulating tank is provided with a heating device and is used for evaporating the liquid refrigerant entering the pressure regulating tank into a gaseous refrigerant;
the gaseous refrigerant outlet is communicated with a compressor in the outdoor unit through a second flow direction control assembly, so that the gaseous refrigerant sequentially passes through the gaseous refrigerant outlet and the second flow direction control assembly to enter the compressor.
Optionally, the first flow direction control assembly comprises a first regulating valve and a check valve; the first regulating valve is used for regulating the flow of the liquid refrigerant in the gas-liquid separator flowing into the pressure regulating tank; the check valve is used for preventing the refrigerant in the pressure regulating tank from reversely flowing into the gas-liquid separator.
Optionally, the second flow direction control assembly includes a second regulating valve and a third regulating valve, one end of the second regulating valve and one end of the third regulating valve are both connected to the gaseous refrigerant outlet, the other end of the second regulating valve is used for connecting an air inlet of the compressor, and the other end of the third regulating valve is used for connecting an air supplement port of the compressor.
Optionally, the heating device is an electric heater, and the electric heater is arranged inside the pressure regulating tank;
or the like, or, alternatively,
the heating device is an electric heating belt, and the electric heating belt is wound on the outer surface of the pressure regulating tank.
Optionally, the gaseous refrigerant outlet is disposed at one end of the pressure regulating tank far from the ground when the pressure regulating tank is in an installation completion state.
Optionally, the liquid refrigerant inlet is disposed at one end of the pressure regulating tank close to the ground when the pressure regulating tank is in an installation completed state.
According to a second aspect of the present application, there is provided an outdoor unit comprising:
a pressure regulator as described in the first aspect of the present application;
the gas-liquid separator is provided with a gas-liquid separation inlet, a first gas-liquid separation outlet and a second gas-liquid separation outlet;
a compressor;
the gas-liquid separation inlet is used for allowing a circulating refrigerant in an air conditioning system where the outdoor unit is located to enter; the first gas-liquid separation outlet is used for allowing gaseous refrigerant in the circulating refrigerant after gas-liquid separation to enter the compressor through a fourth regulating valve; the second gas-liquid separation outlet is used for allowing liquid refrigerant in the circulating refrigerant after gas-liquid separation to flow into the pressure regulator through the first flow direction control assembly;
the pressure regulators are respectively connected with the compressors through second flow direction control assemblies.
Optionally, the second gas-liquid separation outlet is arranged at one end of the gas-liquid separator close to the ground when the gas-liquid separator is in an installation completion state.
According to a third aspect of the present application, there is provided an outdoor unit comprising:
a pressure regulator as described in the first aspect of the present application;
the gas-liquid separator is provided with a gas-liquid separation inlet, a first gas-liquid separation outlet and a second gas-liquid separation outlet;
a compressor provided with an air inlet and an air supplement port;
the gas-liquid separation inlet is used for allowing a circulating refrigerant in an air conditioning system where the outdoor unit is located to enter; the first gas-liquid separation outlet is used for allowing gaseous refrigerant in the circulating refrigerant after gas-liquid separation to enter the compressor through a fourth regulating valve; the second gas-liquid separation outlet is used for allowing liquid refrigerant in the circulating refrigerant after gas-liquid separation to flow into the pressure regulator through the first flow direction control assembly;
the pressure regulator is connected with the gaseous refrigerant outlet through one end of the second regulating valve and one end of the third regulating valve in the second flow direction control assembly, the other end of the second regulating valve is connected with the air inlet, and the other end of the third regulating valve is connected with the air supplementing port.
According to a fourth aspect of the present application, there is provided an air conditioning system comprising:
an outdoor unit according to the second or third aspect of the present application;
and the indoor unit is connected with the outdoor unit.
According to a fifth aspect of the present application, there is provided an air conditioning system control method applied to the air conditioning system according to the fourth aspect of the present application, comprising:
acquiring a liquid discharge signal; the liquid discharge signal comprises a liquid discharge starting signal and a liquid discharge stopping signal;
when the liquid drainage signal is a liquid drainage starting signal, executing a first control logic; executing a second control logic when the liquid drainage signal is a liquid drainage stopping signal;
the first control logic comprises:
controlling the second flow direction control component to be opened for a preset time according to the liquid discharge signal so as to reduce the pressure in the pressure regulating tank;
opening the first flow direction control assembly to enable the liquid refrigerant in the gas-liquid separator to flow into the pressure regulating tank;
opening the heating device while reducing the opening of the fourth regulating valve at a preset rate so that the pressure in the gas-liquid separator is greater than the pressure in the pressure regulating tank;
the second control logic comprises:
sequentially executing according to a preset time interval: and closing the heating device, closing the first flow direction control assembly, adjusting the opening degree of the fourth regulating valve to be the original opening degree, and closing the second flow direction control assembly.
Optionally, acquiring a liquid discharge signal comprises:
acquiring the gas-liquid separation inlet temperature of a gas-liquid separator and the inlet gas temperature of a compressor;
when the gas-liquid separation inlet temperature and the compressor inlet temperature meet a first preset condition, the liquid discharge signal is a liquid discharge starting signal; the first preset condition is that the difference between the gas-liquid separation inlet temperature and the compressor inlet air temperature is smaller than a preset temperature difference.
Optionally, acquiring a liquid discharge signal comprises:
acquiring the current time and the time of executing the first control logic last time;
calculating the difference between the current time and the time of executing the first control logic last time to obtain a liquid drainage time difference;
when the liquid drainage time difference value meets a second preset condition, the liquid drainage signal is a liquid drainage starting signal; the second preset condition is that the liquid drainage time difference value is greater than or equal to a preset time interval.
Optionally, acquiring a liquid discharge signal comprises:
acquiring the gas-liquid separation inlet temperature of a gas-liquid separator and the inlet gas temperature of a compressor;
when the gas-liquid separation inlet temperature and the compressor inlet temperature meet a first preset condition, the liquid discharge signal is a first liquid discharge starting signal; the first preset condition is that the difference value between the gas-liquid separation inlet temperature and the compressor inlet air temperature is smaller than a preset temperature difference value;
or the like, or, alternatively,
acquiring the current moment, the moment of executing the first control logic according to the second liquid drainage starting signal for the last time and the moment of executing the first control logic for the last time;
calculating the difference between the current moment and the moment of executing the first control logic according to the second liquid drainage starting signal at the latest time to obtain a first liquid drainage time difference; calculating the difference between the current moment and the moment of executing the first control logic last time to obtain a second liquid drainage time difference;
when the first liquid discharge time difference value and the second liquid discharge time difference value meet a third preset condition, the liquid discharge signal is a liquid discharge starting signal; the third preset condition is that the first liquid discharge time difference value is greater than or equal to a preset time interval and the second liquid discharge time difference value is greater than a minimum time interval.
The technical scheme provided by the application can comprise the following beneficial effects: the pressure regulator comprises a pressure regulating tank, the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet, the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly, the gaseous refrigerant outlet is communicated with a compressor in the outdoor unit through a second flow direction control assembly, and a heating device is arranged in the pressure regulator. Based on this, because the liquid refrigerant flows into the pressure regulating tank under the action of the pressure in the gas-liquid separator, and is separated from the low-pressure side of the air conditioning system through the first flow direction control assembly and the second flow direction control assembly, the phenomenon that the low-pressure side pressure is greatly improved due to forced heating in the prior art is controllable to a certain extent, and therefore the influence caused by the large improvement of the low-pressure side pressure can be effectively avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a pressure regulator according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an outdoor unit according to a second embodiment of the present application.
Fig. 3 is a schematic structural diagram of an air conditioning system according to a third embodiment of the present application.
Fig. 4 is a flowchart illustrating an air conditioner control method according to a fourth embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
In the long-term heating operation process of a conventional multi-split air conditioning system in a low-temperature environment, a heat exchanger of an outdoor unit gradually frosts, so that incomplete evaporation of a refrigerant is caused, accumulated liquid is gradually formed in a gas-liquid separator, the quantity of circulating refrigerants in the air conditioning system is gradually reduced, the heat exchange capacity of an indoor unit is gradually attenuated, and the defrosting frequency is increased.
Conventionally, an electric heating belt is generally added around the gas-liquid separator or an electric heating pipe is added in the gas-liquid separator to forcibly heat and evaporate the liquid refrigerant accumulated in the gas-liquid separator, but the forced heating evaporation method greatly increases the pressure on the low-pressure side of the air conditioning system and reduces the heat exchange effect on the evaporation side.
In order to solve the above-mentioned technical problems, the present application provides a pressure regulator, an outdoor unit, an air conditioning system, and a control method of the air conditioning system, which are described below in the form of embodiments.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a pressure regulator according to an embodiment of the present application.
As shown in fig. 1, the present embodiment provides a pressure regulator including:
a pressure regulating tank 1;
the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet; the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly 2, so that the liquid refrigerant in the gas-liquid separator enters the pressure regulating tank through the first flow direction control assembly and the liquid refrigerant inlet under the action of the pressure in the gas-liquid separator by controlling the state of the first flow direction control assembly;
the pressure regulating tank is provided with a heating device 3 for evaporating the liquid refrigerant entering the pressure regulating tank into a gaseous refrigerant;
the gaseous refrigerant outlet is communicated with a refrigerant circulation pipeline in the outdoor unit through a second flow direction control assembly 4, so that the gaseous refrigerant sequentially passes through the gaseous refrigerant outlet and the second flow direction control assembly and escapes from the pressure regulating tank to the refrigerant circulation pipeline of the outdoor unit.
The pressure regulator comprises a pressure regulating tank, the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet, the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly, the gaseous refrigerant outlet is communicated with a compressor in the outdoor unit through a second flow direction control assembly, and a heating device is arranged in the pressure regulator. Based on this, because the liquid refrigerant flows into the pressure regulating tank under the action of the pressure in the gas-liquid separator, and is separated from the low-pressure side of the air conditioning system through the first flow direction control assembly and the second flow direction control assembly, the phenomenon that the low-pressure side pressure is greatly improved due to forced heating in the prior art is controllable to a certain extent, and therefore the influence caused by the large improvement of the low-pressure side pressure can be effectively avoided.
Specifically, the first flow direction control assembly may include a first regulating valve 21 and a check valve 22; the first regulating valve is used for regulating the flow of the liquid refrigerant in the gas-liquid separator flowing into the pressure regulating tank; the check valve is used for preventing the refrigerant in the pressure regulating tank from reversely flowing into the gas-liquid separator. In the operation process of the structure, when the liquid refrigerant is continuously evaporated, the pressure in the pressure regulating tank is possibly higher than the pressure in the gas-liquid separator, at the moment, the liquid can generate the condition of counter flow (namely, the liquid flows into the gas-liquid separator from the pressure regulating tank), and the check valve is arranged in the first flow direction control assembly to avoid the condition of counter flow. The first regulating valve and the check valve are both in the flow path between the pressure regulating tank and the gas-liquid separator.
In order to improve the practicability of the pressure regulator in this embodiment, the second flow direction control assembly in this embodiment may be configured as two regulating valves with different flow directions, specifically, the second flow direction control assembly may include a second regulating valve 41 and a third regulating valve 42, one end of the second regulating valve and one end of the third regulating valve are both connected to the gaseous refrigerant outlet, the other end of the second regulating valve is used to connect an air inlet of the compressor 5 in the outdoor unit, and the other end of the third regulating valve is used to connect an air supplement port of the compressor. When the liquid is discharged, the gaseous refrigerant in the pressure regulating tank can be introduced into the compressor from the air inlet of the compressor through the second regulating valve, and the gaseous refrigerant in the pressure regulating tank can be introduced into the air supplementing pipeline of the compressor through the third regulating valve, so that the intermediate air supplementing amount is improved, and the heating capacity of the air conditioning system is improved.
In addition, the heating device can be various, for example, the heating device is an electric heater, and the electric heater is arranged inside the pressure regulating tank (as shown in fig. 1); or the heating device is an electric heating belt, and the electric heating belt is wound on the outer surface of the pressure regulating tank.
Because the gaseous refrigerant is certainly positioned above the liquid refrigerant (the upper side refers to the direction far away from the ground), the gaseous refrigerant outlet can be arranged at one end, far away from the ground, of the pressure regulating tank in the installation completion state, so that the gaseous refrigerant can be smoothly discharged.
Correspondingly, the liquid refrigerant inlet is arranged at one end, close to the ground, of the pressure regulating tank in the installation completion state. The liquid refrigerant can directly flow into the pressure regulating tank conveniently. Of course, the liquid refrigerant inlet can also be arranged at one end far away from the ground, so that the situation that the liquid refrigerant cannot flow into the pressure regulating tank by means of the pressure in the gas-liquid separator due to overlarge gravity when the liquid refrigerant in the pressure regulating tank is too much is avoided.
Example two
Referring to fig. 2, fig. 2 is a schematic structural diagram of an outdoor unit according to a second embodiment of the present application.
As shown in fig. 2, the outdoor unit according to the present embodiment includes:
a pressure regulator according to the first embodiment of the present application;
a gas-liquid separator 7 provided with a gas-liquid separation inlet, a first gas-liquid separation outlet and a second gas-liquid separation outlet;
a compressor 5;
the gas-liquid separation inlet is used for allowing a circulating refrigerant in an air conditioning system where the outdoor unit is located to enter; the first gas-liquid separation outlet is used for allowing gaseous refrigerant in the circulating refrigerant after gas-liquid separation to enter the compressor through a fourth regulating valve 6; the second gas-liquid separation outlet is used for allowing liquid refrigerant in the circulating refrigerant after gas-liquid separation to flow into the pressure regulator through the first flow direction control assembly;
the pressure regulators are respectively connected with the compressors through second flow direction control assemblies.
The pressure regulator comprises a pressure regulating tank, the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet, the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly, the gaseous refrigerant outlet is communicated with a compressor in the outdoor unit through a second flow direction control assembly, and the pressure regulator is internally provided with a heating device. Based on this, because the liquid refrigerant flows into the pressure regulating tank under the action of the pressure in the gas-liquid separator, and is separated from the low-pressure side of the air conditioning system through the first flow direction control assembly and the second flow direction control assembly, the phenomenon that the low-pressure side pressure is greatly improved due to forced heating in the prior art is controllable to a certain extent, and therefore the influence caused by the large improvement of the low-pressure side pressure can be effectively avoided.
When the second flow direction control assembly comprises one end of a second regulating valve and the third regulating valve, the compressor is provided with an air inlet and an air supplementing port, the pressure regulator is connected with the gaseous refrigerant outlet through one end of the second regulating valve and one end of the third regulating valve, the other end of the second regulating valve is connected with the air inlet, and the other end of the third regulating valve is connected with the air supplementing pipeline of the air supplementing port.
The second gas-liquid separation outlet is disposed at an end of the gas-liquid separator close to the ground when the gas-liquid separator is in an installation completed state, so that the liquid refrigerant can flow out of the gas-liquid separator conveniently.
EXAMPLE III
Referring to fig. 3, fig. 3 is a schematic structural diagram of an air conditioning system according to a third embodiment of the present application.
As shown in fig. 3, the air conditioning system provided in the present embodiment includes: the outdoor unit 301 and the indoor units 302 connected to the outdoor unit according to the second embodiment of the present application.
The pressure regulator comprises a pressure regulating tank, the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet, the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly, the gaseous refrigerant outlet is communicated with a compressor in the outdoor unit through a second flow direction control assembly, and the pressure regulator is internally provided with a heating device. Based on this, because the liquid refrigerant flows into the pressure regulating tank under the action of the pressure in the gas-liquid separator, and is separated from the low-pressure side of the air conditioning system through the first flow direction control assembly and the second flow direction control assembly, the phenomenon that the low-pressure side pressure is greatly improved due to forced heating in the prior art is controllable to a certain extent, and therefore the influence caused by the large improvement of the low-pressure side pressure can be effectively avoided.
Example four
Referring to fig. 4, fig. 4 is a flowchart illustrating an air conditioner control method according to a fourth embodiment of the present application.
As shown in fig. 4, the air conditioner control method provided in this embodiment includes:
s401, acquiring a liquid drainage signal; the liquid discharge signal comprises a liquid discharge starting signal and a liquid discharge stopping signal;
step S402, when the liquid drainage signal is a liquid drainage starting signal, executing a first control logic;
and S403, executing a second control logic when the liquid drainage signal is a liquid drainage stopping signal.
Wherein the first control logic comprises: controlling the second flow direction control component to be opened for a preset time according to the liquid discharge signal so as to reduce the pressure in the pressure regulating tank; opening the first flow direction control assembly to enable the liquid refrigerant in the gas-liquid separator to flow into the pressure regulating tank; and opening the heating device while reducing the opening degree of the fourth regulating valve at a preset rate so that the pressure in the gas-liquid separator is greater than the pressure in the pressure regulating tank.
The second control logic comprises: sequentially executing according to a preset time interval: and closing the heating device, closing the first flow direction control assembly, adjusting the opening degree of the fourth regulating valve to be the original opening degree, and closing the second flow direction control assembly.
In the first control logic, the opening degree of the fourth regulating valve is reduced at a preset rate while the heating device is turned on so as to ensure that the pressure in the pressure regulating tank is always lower than the pressure in the gas-liquid separator, the pressure in the pressure regulating tank is gradually increased as the liquid refrigerant in the pressure regulating tank is continuously evaporated into the gaseous refrigerant, and in order to avoid that the pressure in the pressure regulating tank is higher than the pressure in the gas-liquid separator, the opening degree of the fourth regulating valve can be reduced, the escape of the gaseous refrigerant from the gas-liquid separator is reduced, and the gaseous refrigerant accumulated in the gas-liquid separator is increased so as to increase the pressure in the gas-liquid separator. Specifically, the preset rate is determined according to the volume of the actually installed gas-liquid separator and the circulation amount of the refrigerant in the specific operation process.
In addition, the determination of the liquid discharge starting signal can be carried out in two modes, wherein the first mode is to discharge liquid according to the actual liquid accumulation condition, and the second mode is to discharge liquid at fixed time.
Specifically, when the determination of the start liquid discharge signal follows the first manner, acquiring the liquid discharge signal may include:
acquiring the gas-liquid separation inlet temperature of a gas-liquid separator and the inlet gas temperature of a compressor; when the gas-liquid separation inlet temperature and the compressor inlet temperature meet a first preset condition, the liquid discharge signal is a liquid discharge starting signal; the first preset condition is that the difference between the gas-liquid separation inlet temperature and the compressor inlet air temperature is smaller than a preset temperature difference.
When the determination to begin the liquid discharge signal follows the second manner, acquiring the liquid discharge signal may include:
acquiring the current time and the time of executing the first control logic last time; calculating the difference between the current time and the time of executing the first control logic last time to obtain a liquid drainage time difference; when the liquid drainage time difference value meets a second preset condition, the liquid drainage signal is a liquid drainage starting signal; the second preset condition is that the liquid drainage time difference value is greater than or equal to a preset time interval.
Of course, the first and second manners may be adopted to determine the drainage starting signal, and in order to avoid that the drainage times are more than the actual requirement, the manner of obtaining the drainage starting signal may include:
acquiring the gas-liquid separation inlet temperature of a gas-liquid separator and the inlet gas temperature of a compressor; when the gas-liquid separation inlet temperature and the compressor inlet temperature meet a first preset condition, the liquid discharge signal is a first liquid discharge starting signal; the first preset condition is that the difference value between the gas-liquid separation inlet temperature and the compressor inlet air temperature is smaller than a preset temperature difference value; or, acquiring the current time, the time of executing the first control logic according to the second liquid drainage starting signal for the last time and the time of executing the first control logic for the last time; calculating the difference between the current moment and the moment of executing the first control logic according to the second liquid drainage starting signal at the latest time to obtain a first liquid drainage time difference; calculating the difference between the current moment and the moment of executing the first control logic last time to obtain a second liquid drainage time difference; when the first liquid discharge time difference value and the second liquid discharge time difference value meet a third preset condition, the liquid discharge signal is a liquid discharge starting signal; the third preset condition is that the first liquid discharge time difference value is greater than or equal to a preset time interval and the second liquid discharge time difference value is greater than a minimum time interval.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A pressure regulator for an outdoor unit, comprising:
a pressure regulating tank;
the pressure regulating tank is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet; the liquid refrigerant inlet is communicated with a gas-liquid separator in the outdoor unit through a first flow direction control assembly, so that the liquid refrigerant in the gas-liquid separator enters the pressure regulating tank through the first flow direction control assembly and the liquid refrigerant inlet under the action of the pressure in the gas-liquid separator by controlling the state of the first flow direction control assembly;
the pressure regulating tank is provided with a heating device and is used for evaporating the liquid refrigerant entering the pressure regulating tank into a gaseous refrigerant;
the gaseous refrigerant outlet is communicated with a refrigerant circulation pipeline in the outdoor unit through a second flow direction control assembly, so that the gaseous refrigerant sequentially passes through the gaseous refrigerant outlet and the second flow direction control assembly and escapes from the pressure regulating tank to the refrigerant circulation pipeline of the outdoor unit.
2. The pressure regulator of claim 1, wherein the first flow control assembly comprises a first regulator valve and a check valve; the first regulating valve is used for regulating the flow of the liquid refrigerant in the gas-liquid separator flowing into the pressure regulating tank; the check valve is used for preventing the refrigerant in the pressure regulating tank from reversely flowing into the gas-liquid separator.
3. The pressure regulator of claim 1, wherein the second flow direction control assembly comprises a second regulating valve and a third regulating valve, one end of the second regulating valve and one end of the third regulating valve are both connected to the gaseous refrigerant outlet, the other end of the second regulating valve is used for connecting an air inlet of a compressor in the outdoor unit, and the other end of the third regulating valve is used for connecting an air supplement pipeline of the compressor.
4. The pressure regulator according to claim 1, wherein the heating device is an electric heater disposed inside the pressure regulating tank;
or the like, or, alternatively,
the heating device is an electric heating belt, and the electric heating belt is wound on the outer surface of the pressure regulating tank.
5. The pressure regulator of claim 1, wherein the gaseous refrigerant outlet is disposed at an end of the pressure regulating tank that is remote from the ground when the pressure regulating tank is in an installed state.
6. The pressure regulator of claim 1, wherein the liquid refrigerant inlet is disposed at an end of the pressure regulating tank near the ground when the pressure regulating tank is in an installed state.
7. An outdoor unit, comprising:
a pressure regulator as defined in any one of claims 1, 2, 4 to 6;
the gas-liquid separator is provided with a gas-liquid separation inlet, a first gas-liquid separation outlet and a second gas-liquid separation outlet;
a compressor;
the gas-liquid separation inlet is used for allowing a circulating refrigerant in an air conditioning system where the outdoor unit is located to enter; the first gas-liquid separation outlet is used for allowing gaseous refrigerant in the circulating refrigerant after gas-liquid separation to enter the compressor through a fourth regulating valve; the second gas-liquid separation outlet is used for allowing liquid refrigerant in the circulating refrigerant after gas-liquid separation to flow into the pressure regulator through the first flow direction control assembly;
the pressure regulators are respectively connected with the compressors through second flow direction control assemblies.
8. The outdoor unit of claim 7, wherein the second gas-liquid separation outlet is provided at an end of the gas-liquid separator close to the ground in a mounted state.
9. An outdoor unit, comprising:
a pressure regulator as defined in claim 3;
the gas-liquid separator is provided with a gas-liquid separation inlet, a first gas-liquid separation outlet and a second gas-liquid separation outlet;
a compressor provided with an air inlet and an air supplement port;
the gas-liquid separation inlet is used for allowing a circulating refrigerant in an air conditioning system where the outdoor unit is located to enter; the first gas-liquid separation outlet is used for allowing gaseous refrigerant in the circulating refrigerant after gas-liquid separation to enter the compressor through a fourth regulating valve; the second gas-liquid separation outlet is used for allowing liquid refrigerant in the circulating refrigerant after gas-liquid separation to flow into the pressure regulator through the first flow direction control assembly;
the pressure regulator is connected with the gaseous refrigerant outlet through one end of the second regulating valve and one end of the third regulating valve in the second flow direction control assembly, the other end of the second regulating valve is connected with the air inlet, and the other end of the third regulating valve is connected with the air supplementing pipeline of the air supplementing port.
10. An air conditioning system, comprising:
the outdoor unit of any one of claims 7 to 9;
and the indoor unit is connected with the outdoor unit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111197877A (en) * | 2020-02-26 | 2020-05-26 | 珠海格力电器股份有限公司 | Pressure regulator, outdoor unit, air conditioning system and control method of air conditioning system |
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Cited By (2)
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| CN111197877A (en) * | 2020-02-26 | 2020-05-26 | 珠海格力电器股份有限公司 | Pressure regulator, outdoor unit, air conditioning system and control method of air conditioning system |
| CN111197877B (en) * | 2020-02-26 | 2023-12-19 | 珠海格力电器股份有限公司 | Pressure regulator, outdoor unit, air conditioning system and control method of air conditioning system |
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