CN213984139U - Valve assembly for refrigerant supply system - Google Patents
Valve assembly for refrigerant supply system Download PDFInfo
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- CN213984139U CN213984139U CN202023023762.3U CN202023023762U CN213984139U CN 213984139 U CN213984139 U CN 213984139U CN 202023023762 U CN202023023762 U CN 202023023762U CN 213984139 U CN213984139 U CN 213984139U
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Abstract
A valve assembly for a refrigerant supply system comprising the following modules which are independently switchable: the liquid supply module is used for supplying liquid to the assembling section of the tested machine; an inlet G of the tested machine assembling section is connected with the liquid supply module; the first evaporation pressure module is connected behind the outlet H of the assembling section of the tested machine and is used for providing a first evaporation pressure for the assembling section of the tested machine; the defrosting hot air supply module is connected with an outlet H of the assembling section of the tested machine; and the defrosting hot gas recovery module is connected with the inlet G of the assembly section of the tested machine. The utility model discloses a refrigerant liquid supply system's valve module can cooperate and supply the liquid platform, for being provided two kinds of functional mode by the test machine, one kind is through the test mode that supplies liquid module and first evaporating pressure module to realize, another kind is through defrosting steam supply module and the defrosting mode that defrosting steam recovery module realized, and every module has independent switch, and the switching control of being convenient for can improve detection efficiency.
Description
Technical Field
The utility model relates to a valve module of refrigerant liquid supply system.
Background
A remote refrigeration display case is a type of refrigeration appliance that is separate from the condenser and compressor, and includes an expansion valve and an evaporator within the interior thereof, but does not include the condenser and compressor. When the prior remote refrigeration showcase or other similar refrigeration equipment which is separately arranged with a condenser and a compressor is tested, the refrigeration equipment and the whole system of the condenser and the compressor which are equipped with the refrigeration equipment are generally required to be tested, the test cost is high, and the operation is inconvenient.
The valve assembly of the existing refrigerant liquid supply system can not provide the defrosting function for the tested machine.
SUMMERY OF THE UTILITY MODEL
According to an aspect of the present invention, there is provided a valve assembly for a refrigerant supply system, comprising the following modules which are independently switchable:
the liquid supply module is used for supplying liquid to the assembling section of the tested machine;
an inlet G of the tested machine assembling section is connected with the liquid supply module;
the first evaporation pressure module is connected behind the outlet H of the assembling section of the tested machine and is used for providing a first evaporation pressure for the assembling section of the tested machine;
the defrosting hot air supply module is connected with an outlet H of the assembling section of the tested machine;
and the defrosting hot gas recovery module is connected with the inlet G of the assembly section of the tested machine.
The utility model discloses a refrigerant liquid supply system's valve module can cooperate and supply the liquid platform, for being provided two kinds of functional mode by the test machine, one kind is through the test mode that supplies liquid module and first evaporating pressure module to realize, another kind is through defrosting steam supply module and the defrosting mode that defrosting steam recovery module realized, and every module has independent switch, and the switching control of being convenient for can improve detection efficiency.
In some embodiments, the liquid supply module includes a first control valve, a flow meter, and a first check valve connected in series, the first check valve being connected to the assembly section of the machine under test.
In some embodiments, the machine-under-test assembly section includes a second stop valve, a machine-under-test mounting structure, and a third stop valve connected in series.
In some embodiments, the defrosting hot gas supply module includes a fourth shutoff valve and a fourth control valve connected to each other.
In some embodiments, the defrosting hot gas recovery module comprises a fifth stop valve, a fifth control valve and a second check valve which are connected in sequence, and the second check valve is connected with the assembly section of the tested machine.
In some embodiments, the valve assembly of the refrigerant supply system further comprises a second evaporation pressure module connected after the outlet H of the tested machine block for providing a second evaporation pressure to the tested machine block.
In some embodiments of the present invention, the substrate is,
the first evaporation pressure module comprises a first throttling valve and a second control valve which are connected in sequence;
the second evaporating pressure module includes a third control valve connected at an outlet of the first throttle valve.
In some embodiments of the present invention, the substrate is,
the tested machine assembling section also comprises an inlet refrigerant temperature sensor and an inlet refrigerant pressure sensor which are respectively arranged at the inlet of the tested machine mounting structure, and an outlet refrigerant temperature sensor and an outlet refrigerant pressure sensor which are respectively arranged at the outlet of the tested machine mounting structure;
the first throttle valve is arranged to control the outlet refrigerant pressure of the tested machine.
In some embodiments, the valve assembly of the refrigerant supply system further comprises a refrigerant recovery module connected after the outlet H of the assembled section of the machine under test.
In some embodiments, the refrigerant recovery module includes a sixth stop valve and a sixth control valve connected to each other.
Drawings
FIG. 1 is a block diagram of a refrigerant liquid supply system according to some embodiments of the present invention;
fig. 2 is a block diagram of a valve assembly according to some embodiments of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 schematically illustrates a refrigerant supply system according to some embodiments of the present invention, which may be used to test a remote refrigeration display case or similar other refrigeration equipment separately disposed from a condenser and a compressor, to provide refrigerant and corresponding operating conditions thereto.
The refrigerant liquid supply system comprises a liquid supply platform 10 and a valve assembly, wherein the liquid supply platform 10 and a tested machine are connected with each other through the valve assembly to provide refrigerant and corresponding working conditions for the tested machine, so that the testing, defrosting or refrigerant recovery operation of the tested machine is realized. The valve assembly can be provided with a plurality of groups, so that a plurality of stations for detecting the tested machine are provided, the testing, defrosting or refrigerant recovery operation can be carried out on a plurality of tested machines at the same time, and different operations can be carried out on different tested machines at the same time.
The refrigerant liquid supply system may further include a corresponding PID controller that controls the corresponding actuator based on the result measured by each measuring element (sensor) and the set target value such that the result measured by each measuring element reaches the target value. The working mode and control principle of the PID controller itself belong to the prior art, and are not described herein.
The liquid supply platform 10 comprises a first throttling element 11, a first evaporator 12, a second throttling element 13, a first compressor 14, an oil separator 15, a third throttling element 16, a condenser 17 and a subcooler 18 which are connected in sequence, wherein the outlet of the subcooler 18 is connected with the inlet of the first throttling element 11, and the first throttling element 11, the second throttling element 13 and the third throttling element 16 can be throttling valves or other throttling components; the liquid supply platform 10 further comprises a first evaporation pressure sensor 21, a second evaporation pressure sensor 22, an inlet temperature sensor 23, a condensation pressure sensor 24, a liquid refrigerant temperature sensor 25 and a hot air pressure difference sensor 26; the liquid supply platform 10 may further include a refrigerant recovery section.
At the inlet of the first throttling element 11, a point a is provided for connection to a valve assembly for feeding the machine to be tested. The first evaporation pressure sensor 21 is provided at the outlet of the first evaporator 12 for detecting a first evaporation pressure, i.e., the outlet pressure of the first evaporator 12, and the first throttle element 11 is used for controlling the first evaporation pressure. Specifically, the opening degree of the first throttle element 11 is set to be adjustable according to the value measured by the first evaporation pressure sensor 21 so that the first evaporation pressure reaches a target value, which may be adjusted by a PID controller, for example. The outlet of the first evaporator 12 is provided with point C for connection to a valve assembly for providing a first evaporation pressure to the machine under test.
The second throttling element 13 depressurizes the gas output by the first evaporator 12 so as to form a second evaporation pressure lower than the first evaporation pressure. The outlet of the second restriction element 13 is provided at point D for connection to the valve assembly to provide a second, lower, vapor pressure to the machine under test. During testing, the evaporation pressure of the tested machine can be selected to be a first higher evaporation pressure or a second lower evaporation pressure by switching through the valve assembly. The second evaporation pressure sensor 22 is provided at the outlet of the second throttling element 13 for detecting the second evaporation pressure, and the second throttling element 13 is used for controlling the second evaporation pressure. In particular, the opening degree of the second throttling element 13 is set to be adjustable according to the value measured by the second evaporation pressure sensor 22, so that the second evaporation pressure reaches a target value, which can be adjusted, for example, by a PID controller.
The inlet temperature sensor 23 is provided at an inlet of the first compressor 14 for detecting an inlet temperature thereof.
The oil separator 15 is arranged at the outlet of the first compressor 14 for re-conveying separated oil back to the first compressor 14. When the first compressor 14 employs a magnetic levitation compressor, the oil separator 15 may not be used.
The third throttling element 16 depressurizes the hot gas output by the first compressor 14, thereby creating a pressure difference at the inlet and outlet of the third throttling element 16. The third throttling element 16 is provided at the inlet and outlet thereof with points B and F, respectively, for connection to the valve assembly for supplying defrost heat and for recovering defrost heat for the machine under test, respectively. The hot air pressure difference sensor 26 is used to detect a hot air pressure difference between the points B and F, and the third throttling element 16 is used to control the hot air pressure difference. Specifically, the opening degree of the third throttling element 16 is set to be adjustable according to the value measured by the hot air pressure difference sensor 26 so that the hot air pressure difference reaches a target value, which can be adjusted by a PID controller, for example.
The condensing pressure sensor 24 is provided at an inlet of the condenser 17 for detecting a condensing pressure of the condenser 17. The condenser 17 is used for controlling the condensing pressure, and specifically, the heat exchange amount of the condenser 17 is set to be adjustable according to the value measured by the condensing pressure sensor 24, so that the condensing pressure reaches a target value, for example, the heat exchange amount can be adjusted by a PID controller.
The liquid refrigerant temperature sensor 25 is provided at the outlet of the subcooler 18, and detects the temperature of the subcooled liquid refrigerant. The subcooler 18 is used for controlling the temperature of the liquid refrigerant, and specifically, the heat exchange amount of the subcooler 18 is set to be adjustable according to the value measured by the liquid refrigerant temperature sensor 25, so that the temperature of the liquid refrigerant reaches a target value, for example, the temperature can be adjusted by a PID controller.
The refrigerant recovery section is connected to an inlet of the condenser 17, specifically, between an outlet of the first compressor 14 and the oil separator 15, and is used for providing refrigerant recovery for the tested machine. The refrigerant recovery section comprises a pressure regulating element 31, a second evaporator 32 and a second compressor 33 which are sequentially connected, wherein an outlet of the second compressor 33 is connected with an inlet of the condenser 17, particularly connected between an outlet of the first compressor 14 and the oil separator 15, and an inlet of the pressure regulating element 31 is provided with a point E for connecting with a valve assembly and recovering the refrigerant in the tested machine after testing. The recovered refrigerant is pressure-regulated by the pressure regulating element 31, evaporated into a gas by the second evaporator 32, and compressed and recovered by the second compressor 33. The outlet of the second compressor 33 is preferably arranged before the oil separator 15, the oil separator 15 being able to simultaneously recover the oil of the second compressor 33. The pressure regulating element 31 may be a pressure regulating valve or a throttling element.
The valve assembly comprises a liquid supply module, a tested machine assembling section, an evaporation pressure module, a defrosting hot gas supply module, a defrosting hot gas recovery module and a refrigerant recovery module, wherein the evaporation pressure module comprises a first evaporation pressure module and a second evaporation pressure module.
The inlet of the liquid supply module is connected with the point A, and the outlet of the liquid supply module is connected with the inlet G of the assembling section of the tested machine. The liquid supply module comprises a first stop valve 41, a first control valve 42, a flow meter 43 and a first non-return valve 44 connected in sequence. The first stop valve 41 is used for controlling the opening and closing of the liquid supply module, the second control valve 62 is used for controlling the amount of the supplied liquid, an electronic throttle valve can be adopted, the flow meter 43 measures the flow rate of the liquid, and the first check valve 44 is used for preventing the backflow of the liquid.
The assembling section of the tested machine comprises a second stop valve 51, a mounting structure 52 of the tested machine, a third stop valve 53, an inlet refrigerant temperature sensor 54 and an inlet refrigerant pressure sensor 55 which are respectively arranged at the inlet of the mounting structure 52 of the tested machine, and an outlet refrigerant temperature sensor 56 and an outlet refrigerant pressure sensor 57 which are respectively arranged at the outlet of the mounting structure 52 of the tested machine. The second stop valve 51 and the third stop valve 53 are used for controlling the on-off of the inlet G and the outlet H of the assembling section of the tested machine respectively. During detection, the heat exchange amount of the tested machine is calculated according to the inlet refrigerant temperature, the inlet refrigerant pressure, the outlet refrigerant temperature, the outlet refrigerant pressure and the liquid flow of the tested machine.
The inlet of the first evaporation pressure module is connected with the outlet H of the assembling section of the tested machine, and the outlet of the first evaporation pressure module is connected with the point C, so that higher first evaporation pressure at the point C is obtained. The first evaporation pressure module includes a first throttle valve 61 and a second control valve 62 connected in series. The first throttle valve 61 is connected to the outlet of the third cut-off valve 53 for controlling the outlet pressure of the machine under test. Specifically, the opening degree of the first throttle valve 61 is set to be adjustable according to the value measured by the outlet refrigerant pressure sensor 57 so that the outlet refrigerant pressure of the device under test reaches a target value, and may be adjusted by a PID controller, for example. The second control valve 62 is used to control the opening and closing and the flow rate, and an electronic throttle valve may be used.
The inlet of the second evaporation pressure module is connected with the outlet H of the assembly section of the tested machine through the first throttle valve 61, and the outlet of the second evaporation pressure module is connected with the point D, so that the lower second evaporation pressure at the point D is obtained. The second evaporation pressure module includes a third control valve 63 connected to an outlet of the first throttle valve 61, and the third control valve 63 is used for controlling opening and closing and flow rate, and an electronic throttle valve may be used.
The inlet of the defrosting hot gas supply module is connected with the point B, and the outlet of the defrosting hot gas supply module is connected with the outlet H of the assembly section of the tested machine. The defrosting hot gas supply module includes a fourth cut-off valve 71 and a fourth control valve 72 connected to each other, the fourth cut-off valve 71 is used for controlling the opening and closing of the defrosting hot gas supply module, and the fourth control valve 72 is used for controlling the amount of hot gas flow, and an electronic throttle valve may be used.
The inlet of the defrosting hot gas recovery module is connected with the inlet G of the assembly section of the tested machine, and the outlet of the defrosting hot gas recovery module is connected with the point F. The defrosting hot gas recovery module comprises a fifth stop valve 81, a fifth control valve 82 and a second check valve 83 which are connected in sequence, the second check valve 83 is connected with an inlet G of the assembly section of the tested machine, and the fifth stop valve 81 is connected with a point F. The fifth cut-off valve 81 is used to control the opening and closing of the defrosting hot gas recovery module, the fifth control valve 82 is used to control the hot gas flow, an electronic throttle valve may be used, and the second check valve 83 is used to prevent the reverse flow.
The inlet of the refrigerant recovery module is connected with the outlet H of the assembly section of the tested machine, and the outlet of the refrigerant recovery module is connected with the point E, so that the refrigerant recovery module is connected with the refrigerant recovery section of the liquid supply platform 10. The refrigerant recovery module comprises a sixth stop valve 91 and a sixth control valve 92 which are connected with each other, an outlet of the sixth stop valve 91 is electrically connected with the E for controlling the opening and closing of the refrigerant recovery module, an inlet of the sixth control valve 92 is connected with an outlet H of the assembly section of the tested machine for controlling the recovery flow, and an electronic throttle valve can be adopted.
When a tested machine is tested, the first stop valve 41, the second stop valve 51 and the third stop valve 53 are opened, any one of the second control valve 62 and the third control valve 63 is opened according to the required evaporation pressure, so that the liquid supply module, the tested machine assembly section and any one of the first evaporation pressure module or the second evaporation pressure module are communicated in sequence, and meanwhile, the fourth stop valve 71, the fifth stop valve 81 and the sixth stop valve 91 are closed. And after the working condition is stable, obtaining the detection information of the tested machine through the relevant reading.
When defrosting the test machine, the fourth, fifth, second, and third cutoff valves 71, 81, 51, and 53 are opened to communicate the defrosting hot gas supply module, the test machine mounting section, and the defrosting hot gas recovery module in this order, and the first, second, third, and sixth cutoff valves 41, 62, 63, and 91 are closed.
When the refrigerant of the tested machine is recovered, the sixth stop valve 91 is opened, and the first stop valve 41, the second control valve 62, the third control valve 63, the fourth stop valve 71 and the fifth stop valve 81 are closed, so that the assembling section of the tested machine, the refrigerant recovery module and the refrigerant recovery section are sequentially communicated.
The utility model discloses a refrigerant liquid supply system can be directly for refrigeration plant supplies liquid and provide evaporating pressure, need not to test this refrigeration plant rather than being equipped with condenser and the compressor entire system that uses together during the detection, and only need be connected refrigeration plant and refrigerant liquid supply system, is particularly convenient for detect remote formula refrigeration show case or similar other refrigeration plant that sets up separately with condenser and compressor, can effectively reduce the test cost, improves operating efficiency. And secondly, high evaporation pressure or low evaporation pressure can be provided according to requirements, so that a tested machine can carry out tests under different working conditions. Thirdly, hot air can be provided to defrost the tested machine, and the refrigerant in the tested machine can be conveniently recovered.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, or the above technical solutions can be freely combined, including the technical features between the above different embodiments, which all belong to the protection scope of the present invention.
Claims (10)
1. A valve assembly for a refrigerant supply system, comprising the following independently switchable modules:
the liquid supply module is used for supplying liquid to the assembling section of the tested machine;
an inlet G of the tested machine assembling section is connected with the liquid supply module;
the first evaporation pressure module is connected behind the outlet H of the assembling section of the tested machine and is used for providing a first evaporation pressure for the assembling section of the tested machine;
the defrosting hot gas supply module is connected with an outlet H of the assembling section of the tested machine;
and the defrosting hot gas recovery module is connected with the inlet G of the assembling section of the tested machine.
2. A valve assembly for a refrigerant liquid supply system as set forth in claim 1, wherein: the liquid supply module comprises a first control valve, a flowmeter and a first check valve which are connected in sequence, and the first check valve is connected with the assembly section of the tested machine.
3. A valve assembly for a refrigerant liquid supply system as set forth in claim 1, wherein: the tested machine assembling section comprises a second stop valve, a tested machine mounting structure and a third stop valve which are connected in sequence.
4. The valve assembly of a refrigerant liquid supply system of claim 1, wherein the defrost hot gas supply module includes a fourth shutoff valve and a fourth control valve connected to each other.
5. The valve assembly of a refrigerant liquid supply system of claim 1, wherein the defrost hot gas recovery module includes a fifth stop valve, a fifth control valve, and a second check valve connected in series, the second check valve being connected to the tested machine assembly.
6. A valve assembly for a refrigerant liquid supply system as set forth in claim 1, wherein: the device also comprises a second evaporation pressure module connected behind the outlet H of the assembling section of the tested machine and used for providing a second evaporation pressure for the assembling section of the tested machine.
7. The valve assembly of a refrigerant liquid supply system as set forth in claim 6, wherein:
the first evaporation pressure module comprises a first throttling valve and a second control valve which are connected in sequence;
the second evaporating pressure module includes a third control valve connected at an outlet of the first throttle valve.
8. A valve assembly for a refrigerant liquid supply system as set forth in claim 7, wherein:
the tested machine assembling section also comprises an inlet refrigerant temperature sensor and an inlet refrigerant pressure sensor which are respectively arranged at the inlet of the tested machine mounting structure, and an outlet refrigerant temperature sensor and an outlet refrigerant pressure sensor which are respectively arranged at the outlet of the tested machine mounting structure;
the first throttle valve is arranged to control the outlet refrigerant pressure of the tested machine.
9. The valve assembly of any one of claims 1 to 8, further comprising a refrigerant recovery module connected after the outlet H of the machine under test assembly section.
10. The valve assembly of claim 9, wherein the refrigerant recovery module comprises a sixth stop valve and a sixth control valve coupled to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023762.3U CN213984139U (en) | 2020-12-14 | 2020-12-14 | Valve assembly for refrigerant supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023023762.3U CN213984139U (en) | 2020-12-14 | 2020-12-14 | Valve assembly for refrigerant supply system |
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| Publication Number | Publication Date |
|---|---|
| CN213984139U true CN213984139U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023023762.3U Active CN213984139U (en) | 2020-12-14 | 2020-12-14 | Valve assembly for refrigerant supply system |
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|---|---|
| CN (1) | CN213984139U (en) |
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- 2020-12-14 CN CN202023023762.3U patent/CN213984139U/en active Active
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