CN206207813U - A kind of compressor hot operation device - Google Patents
A kind of compressor hot operation device Download PDFInfo
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- CN206207813U CN206207813U CN201621274149.XU CN201621274149U CN206207813U CN 206207813 U CN206207813 U CN 206207813U CN 201621274149 U CN201621274149 U CN 201621274149U CN 206207813 U CN206207813 U CN 206207813U
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- compressor
- pressure
- bypass line
- condenser
- expansion valve
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Abstract
This patent is related to a kind of compressor hot operation device, including compressor, condenser, expansion valve, evaporator, bypass line and pressure-detecting device, the evaporator, compressor, condenser and expansion valve are in turn connected to form circulation loop in order, pressure-detecting device is located at condenser and the junction of expansion valve, compressor is connected with the junction of evaporator and expansion valve with the junction of condenser by bypass line, bypass line is provided with the switching device of control bypass line opening and closing, and pressure-detecting device is connected with switching device；The pressure-detecting device is used to detect condensing pressure, and according to the switch of condensing pressure controlling switch device, so as to control the opening and closing of bypass line.The compressor hot operation device can detect too high condensing pressure by pressure-detecting device, and controlling switch device opens bypass line, and too high condensing pressure is reduced in time, it is ensured that normal operation of the compressor under worst hot case.
Description
Technical field
This patent is related to refrigeration technology field, and in particular to a kind of compressor hot operation device.
Background technology
In refrigeration systems, evaporator, condenser, compressor and expansion valve are essential four big portions in refrigeration system
Part.Operation principle between them is：After liquid refrigerant absorbs cooled object heat in the evaporator, it is vaporized into low
The steam of warm low pressure；The steam of low-temp low-pressure is sucked by compressor, and enters condenser after being compressed into the steam of high pressure-temperature；
The steam of condenser mesohigh high temperature is condensed into highly pressurised liquid to cooling medium (water or air) heat release；Highly pressurised liquid is through throttling
Valve throttling is the refrigerant of low-pressure low-temperature, is again introduced into evaporator heat absorption vaporization, reaches the purpose of circularly cooling.
In actual use, because environment temperature is too high, compressor is caused to enter the high-pressure and high-temperature steam temperature of condenser
It is higher, and the refrigerant heat that cooling medium can be taken away is fixed, this is equal to have accumulated heat in condenser so that condensation
Device internal temperature rises, and condensing pressure increases.When condensing pressure increase to a certain extent when, increase the compression ratio of compressor,
Cause the reduction of compressor air-discharging amount, refrigerating capacity reduction；Increase compressor power consumption, cause motor overheating；Condenser is set peace occur
Full hidden danger；The situation for making refrigeration system pressure protection often occur and shutting down, it is impossible to normal operation.
One kind is disclosed in the Chinese invention patent application prospectus of Application No. 200610020071.3 in height
The air-conditioning system of ordinary refrigerant compressor, including compressor, gas exhaust piping, condenser, expansion valve, evaporation are used under warm operating mode
Device, bypass line, return line and electric part, bypass line is drawn from expansion valve inlet ductwork, and this bypass pipe is accessed
The return line of compressor, is equipped with magnetic valve and throttling arrangement in bypass line, magnetic valve is by wire and a detection return-air pressure
The controlling switch series connection of power or suction temperature is connected to power supply.
The patent sets up a bypass pipe, by the control of magnetic valve by expansion valve inlet ductwork and the muffler of compressor
Road carries out throttling connection, and when there is worst hot case, the suction temperature of compressor is raised, and pressure increases, normal more than compressor
During using scope, controlling switch connection, the solenoid valves of bypass line, a small amount of refrigerant in expansion valve inlet ductwork passes through
Bypass line throttling and evaporation reduces the temperature and pressure of gas in return line to return line, compressor is being simulated just
Run under normal operating mode.
Although the program is by reducing the temperature and pressure of gas in return line, reduce indirectly be input into from compressor reducer it is cold
The temperature and pressure of the gas of condenser, so as to mitigate condensing pressure so that compressor can work under worst hot case, but other
The cryogenic high pressure refrigerant liquid that siphunculus road is introduced into from condenser is difficult to mix with the low temperature and low pressure steam in compressor return air pipeline
Close, compressor " liquid hammer " phenomenon is occurred, even if adding throttling arrangement in the program, it is possible to reduce the hair of this phenomenon
It is raw, but throttling arrangement setting will certainly cause bypass line in flow rate of liquid it is slow, increased gas in reduction return line
Temperature and pressure needed for time, increased indirectly reduce from compressor reducer input condenser gas temperature and pressure needed for
Time so that condensing pressure cannot be reduced effectively and rapidly, cause refrigeration system easily to break down.
The content of the invention
In order to overcome the defect of prior art, this patent provides a kind of compressor hot operation device, can be by autonomous
Condensing pressure is adjusted to reach the effect of the normal operation under worst hot case.
To achieve the above object, this patent uses following scheme：
A kind of compressor hot operation device, including compressor, condenser, expansion valve, evaporator, bypass line and pressure
Detection means, the evaporator, compressor, condenser and expansion valve are in turn connected to form circulation loop, pressure detecting in order
Device is located at the junction of condenser and expansion valve, compressor and the junction of condenser and the junction of evaporator and expansion valve
Connected by bypass line, bypass line is provided with the switching device of control bypass line opening and closing, pressure-detecting device and switch
Device is connected；The pressure-detecting device is used to detect condensing pressure, and according to the switch of condensing pressure controlling switch device, from
And control the opening and closing of bypass line.
This patent is that the condensing pressure in pressure-detecting device detects device is high with the difference of prior art
When setting value, pressure-detecting device controlling switch device opens bypass line, and the part that compressor is transported into condenser is high
Warm gases at high pressure are bypassed to the junction of evaporator and expansion valve, and the HTHP gas of condenser is input into by reducing compressor
Body, reduces the thermal accumlation in condenser, so as to reduce condenser internal temperature, directly reduces condensing pressure；Bypass line pair
Evaporator is not directly affected to the process of compressor conveying gas, will not convey liquid to compressor, it is to avoid compressor occurs
" liquid hammer " phenomenon；Throttling arrangement need not be set on bypass line, it is ensured that the efficiency of bypass line bypass gases, can quickly be reduced
Condensing pressure, ensures refrigeration system safe operation, and then cause compressor safe operation under worst hot case.
Further, the compressor is provided with the exhaust outlet being connected with condenser, described bypass line one end and exhaust
Mouth connection.
Bypass line one end connects exhaust outlet, and the gas from compressor output can be enable preferably to enter bypass line, carries
The efficiency of bypass gases high, more effectively to mitigate condensing pressure.
Further, the expansion valve is provided with the outlet being connected with evaporator, and described bypass line one end is connected with outlet.
Bypass line one end connects the outlet of expansion valve so that the gas that bypass comes is flow at expansion valve outlet, because
Distance at expansion valve outlet with evaporator is maximum, it is ensured that the liquid that gas is exported during evaporator is transported to expansion valve
Body can more fully mix so that the gas that bypass comes does not interfere with evaporator normal operation.
Further, the condenser includes the liquid outlet being connected with expansion valve, and the pressure-detecting device is located at out liquid
At mouthful.
Pressure-detecting device can more quickly detect condensing pressure mistake in condenser at the liquid outlet of condenser
State high, it is to avoid the situation that refrigeration system breaks down because long-time is run under too high condensing pressure.
Further, the switching device is magnetic valve.
Magnetic valve simple structure, price in itself is low, and compared with regulating valve etc., other species actuators are easily installed maintenance.Electromagnetism
The robot control system(RCS) that valve is constituted is simple, and only needs switching signal control, is connected very with pressure-detecting device in this patent
It is convenient.The magnetic valve response time may be as little to several milliseconds, it is ensured that bypass line is quickly open-minded, and condensing pressure is alleviated in time.
Further, the pressure-detecting device is pressure switch.
Pressure switch can be realized pressing condensation using high accuracy, the pressure sensor and transmission circuit of high stability energy
The long-time accurate measurement of power and the accurate control to switching device.
Further, the compressor is R410A compressors.
It is different from prior art, this patent has the beneficial effect that：When condensing pressure is too high, compressor is transported to condensation
A part of high temperature and high pressure gas of device are bypassed to the junction of expansion valve and evaporator, directly reduce condensing pressure；Bypass line
Exhaust outlet of compressor and expansion valve outlet are directly connected, without throttling arrangement, bypass gases efficiency high effectively reduces condensation pressure
Power, and the gas that comes of bypass can preferably mix with the liquid of conveying originally, it is to avoid bypass gases are to evaporator so that make
The harmful effect that cooling system is likely to cause；The process of bypass line bypass gases conveys the mistake of gas with evaporator to compressor
Journey is uncorrelated, does not interfere with the normal work of compressor.
Brief description of the drawings
Fig. 1 is the structural representation of this patent.
Fig. 2 is the structural representation of this patent another embodiment.
Specific embodiment
Embodiment 1：
A kind of compressor hot operation device, including compressor 1, condenser 2, expansion valve 4, evaporator 3, bypass line 5
With pressure-detecting device 6, the evaporator 3, compressor 1, condenser 2 and expansion valve 4 are in turn connected to form loop back in order
Road, pressure-detecting device 6 is located at condenser 2 and the junction of expansion valve 4, the junction and evaporator of compressor 1 and condenser 2
3 and the junction of expansion valve 4 connected by bypass line 5, bypass line 5 is provided with the switch dress of the control opening and closing of bypass line 5
7 are put, pressure-detecting device 6 is connected with switching device 7；The pressure-detecting device 6 is used to detect condensing pressure, and according to condensation
The switch of pressure control switching device 7, so as to control the opening and closing of bypass line 5.
The switching device 7 is magnetic valve.
Magnetic valve simple structure, price in itself is low, and compared with regulating valve etc., other species actuators are easily installed maintenance.Electromagnetism
The robot control system(RCS) that valve is constituted is simple, and only needs switching signal control, is connected very with pressure-detecting device in this patent
It is convenient.The magnetic valve response time may be as little to several milliseconds, it is ensured that bypass line is quickly open-minded, and condensing pressure is alleviated in time.
The pressure-detecting device 6 is pressure switch.
Pressure switch uses high accuracy, the pressure sensor and transmission circuit of high stability energy, wherein high accuracy and height are steady
It is qualitative to realize the long-term accurate measurement to condensing pressure and the accurate control to switching device 7.
In specific implementation process, the compressor uses R410A compressors.
The operation principle of this patent：
When pressure switch 6 detects condensing pressure higher than setting value, the control magnetic valve 7 of pressure switch 6 is opened, and opens side
Siphunculus road 5, by the junction of compressor 1 and condenser 2, compressor 1 is transported to by the part high temperature and high pressure gas of condenser 2
The junction of evaporator 3 and expansion valve 4 is led to, the high temperature and high pressure gas that compressor 1 is input into condenser 2 is reduced, so as to reduce cold
Thermal accumlation in condenser 2, that is, reduce the internal temperature of condenser 2, reaches the purpose for reducing condensing pressure.
Embodiment 2：
The present embodiment is that the compressor 1 is provided with the exhaust being connected with condenser 2 with the difference of embodiment 1
Mouth 20, one end of the bypass line 5 is connected with exhaust outlet 20.
The one end of bypass line 5 connects exhaust outlet 20, and the gas from compressor output can be enable preferably to enter bypass line
5, the efficiency of bypass gases is improved, more effectively to mitigate condensing pressure.
The expansion valve 4 is provided with the outlet 40 being connected with evaporator 3, and one end of the bypass line 5 is connected with outlet 40.
The one end of bypass line 5 connects the outlet of expansion valve 4 so that the gas that bypass comes flow to the outlet 40 of expansion valve 4
Place, because maximum with the distance of evaporator 3 at the outlet 40 of expansion valve 4, it is ensured that gas during evaporator 3 is transported to
The liquid of the output of expansion valve 4 can more fully mix so that the gas that bypass comes does not interfere with the normal operation of evaporator 3.
The condenser 2 includes the liquid outlet 20 being connected with expansion valve 4, and the pressure-detecting device 6 is located at liquid outlet 20
Place.
Pressure-detecting device 6 can more quickly detect condensation in condenser 2 at the liquid outlet 20 of condenser 2
Hypertonia, it is to avoid refrigeration system breaks down because long-time is run under too high condensing pressure.
Claims (7)
1. the inspection of a kind of compressor hot operation device, including compressor, condenser, expansion valve, evaporator, bypass line and pressure
Device is surveyed, the evaporator, compressor, condenser and expansion valve are in turn connected to form circulation loop, pressure detecting dress in order
The junction of condenser and expansion valve is arranged in, compressor leads to the junction of condenser with the junction of evaporator and expansion valve
Bypass line connection is crossed, bypass line is provided with the switching device of control bypass line opening and closing, and pressure-detecting device is filled with switch
Put connection；The pressure-detecting device is used to detect condensing pressure, and according to the switch of condensing pressure controlling switch device, so that
Control the opening and closing of bypass line.
2. a kind of compressor hot operation device according to claim 1, it is characterised in that the compressor be provided with
The exhaust outlet of condenser connection, described bypass line one end is connected with exhaust outlet.
3. a kind of compressor hot operation device according to claim 1, it is characterised in that the expansion valve is provided with and steaming
The outlet of hair device connection, described bypass line one end is connected with outlet.
4. a kind of compressor hot operation device according to claim 1, it is characterised in that the condenser include with it is swollen
The liquid outlet of swollen valve connection, the pressure-detecting device is at liquid outlet.
5. a kind of compressor hot operation device according to any one of claim 1 ~ 4, it is characterised in that the switch dress
It is set to magnetic valve.
6. a kind of compressor hot operation device according to any one of claim 1 ~ 4, it is characterised in that the pressure inspection
Survey device is pressure switch.
7. a kind of compressor hot operation device according to any one of claim 1 ~ 4, it is characterised in that the compressor
It is R410A compressors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274149.XU CN206207813U (en) | 2016-11-25 | 2016-11-25 | A kind of compressor hot operation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274149.XU CN206207813U (en) | 2016-11-25 | 2016-11-25 | A kind of compressor hot operation device |
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| Publication Number | Publication Date |
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| CN206207813U true CN206207813U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621274149.XU Active CN206207813U (en) | 2016-11-25 | 2016-11-25 | A kind of compressor hot operation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524607A (en) * | 2016-11-25 | 2017-03-22 | 广东申菱环境系统股份有限公司 | Compressor high-temperature operation device |
-
2016
- 2016-11-25 CN CN201621274149.XU patent/CN206207813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524607A (en) * | 2016-11-25 | 2017-03-22 | 广东申菱环境系统股份有限公司 | Compressor high-temperature operation device |
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