CN107490231A - Heat pump system, control method thereof and refrigeration house - Google Patents
Heat pump system, control method thereof and refrigeration house Download PDFInfo
- Publication number
- CN107490231A CN107490231A CN201710725736.9A CN201710725736A CN107490231A CN 107490231 A CN107490231 A CN 107490231A CN 201710725736 A CN201710725736 A CN 201710725736A CN 107490231 A CN107490231 A CN 107490231A
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- Prior art keywords
- adjusting means
- heat pump
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- close
- aperture
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005057 refrigeration Methods 0.000 title abstract description 3
- 239000003507 refrigerant Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 22
- 230000007613 environmental effect Effects 0.000 claims description 14
- 230000033228 biological regulation Effects 0.000 claims description 9
- 238000010025 steaming Methods 0.000 claims description 2
- 235000012055 fruits and vegetables Nutrition 0.000 abstract description 15
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 description 34
- 230000008014 freezing Effects 0.000 description 13
- 238000007710 freezing Methods 0.000 description 13
- 239000003921 oil Substances 0.000 description 9
- 230000008020 evaporation Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
- F25D13/02—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems
- F25D13/04—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems the compartments being at different temperatures
-
- 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
-
- 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0401—Refrigeration circuit bypassing means for the compressor
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a heat pump system, a control method thereof and a refrigeration house. The heat pump system is characterized in that a compressor, a condenser and at least two evaporators which are arranged in parallel are arranged on a refrigerant flow path of the heat pump system, a first adjusting device with adjustable opening degree is arranged on an air outlet pipeline of at least one evaporator, a bypass branch is arranged on an air return pipeline of the compressor, one end of the bypass branch is connected with the air return pipeline, the other end of the bypass branch is connected to the downstream side of an air outlet of the compressor, and a second adjusting device with adjustable opening degree is arranged on the bypass branch. According to the heat pump system provided by the invention, different evaporators can be arranged in different environment areas, the environment temperatures in the different environment areas can be accurately adjusted by adjusting the opening degree of each adjusting device, so that different temperature conditions are formed in the different environment areas, and when the heat pump system is applied to a ship, different temperature areas can be formed in a cold storage of the ship aiming at different types of fruits and vegetables, so that the fresh-keeping time of the fruits and vegetables is prolonged.
Description
Technical field
The present invention relates to art of heat pumps, and in particular to a kind of heat pump and its control method, freezer.
Background technology
In order to ensure during navigation, sailor can have the foods such as fresh fruits and vegetables and be used, it is necessary to be set on ship
In the freezer of refrigeration fruits and vegetables, the environment in freezer is freezed using evaporator in heat pump, reaches and fruits and vegetables is protected
Fresh purpose.But the preservation temperature that different fruits and vegetables need is different, therefore there is can not pin for the heat pump on spot ship
Different fruits and vegetables are set with different environment temperatures, it is difficult to the problems such as realizing the accurate adjustment of temperature, so as to have a strong impact on fruits and vegetables
Fresh keeping time, cause existing freezer to meet the fruits and vegetables demand of coasting ship, it is difficult to remain in fruits and vegetables long-term and hold
Continue insurance fresh.
The content of the invention
In view of this, an object of the present invention be to provide it is a kind of different environmental areas can be carried out simultaneously it is accurate
Temperature adjustment, cause different environmental area to obtain the heat pump and its control method, freezer of different environment temperatures.
To reach above-mentioned purpose, on the one hand, the present invention uses following technical scheme：
A kind of heat pump, compressor, condenser and at least two are provided with simultaneously on the refrigerant flow of the heat pump
Join the evaporator set, adjustable first adjusting means of aperture is provided with the outlet pipe of at least one evaporator, it is described
Bypass branch is provided with the return line of compressor, one end of the bypass branch connects the return line, another termination
Enter the downstream of the compressor outlet, adjustable second adjusting means of aperture is provided with the bypass branch.
Preferably, it is additionally provided with first pressure detection means on the outlet pipe of first adjusting means is provided with；
And/or
Second pressure detection means is provided with the return line of the compressor.
Preferably, the heat pump also includes oil eliminator, and the oil eliminator is arranged on the exhaust of the compressor
On pipeline, the other end of the bypass branch connects with the oil eliminator.
Preferably, described at least two evaporators being arranged in parallel are located in different environmental areas.
Preferably, the different environmental area has different target temperatures.
Preferably, the different environmental area includes first environment region and second environment region, and described at least two
The evaporator being arranged in parallel includes the first evaporator being located in the first environment region and positioned at the second environment region
The second interior evaporator, the target temperature in the first environment region is higher than the target temperature in the second environment region, described
First adjusting means is provided with the outlet pipe of first evaporator, is not provided with the outlet pipe of second evaporator
First adjusting means.
On the other hand, the present invention uses following technical scheme：
A kind of control method of heat pump as described above, the control method include：Adjusted by adjusting described first
The aperture of regulating device and/or second adjusting means adjusts the temperature of the different environmental area.
Preferably, first pressure detection means is additionally provided with the outlet pipe of first adjusting means is provided with,
Second pressure detection means is provided with the return line of the compressor；
The control method further comprises：According to the first pressure detection means and the second pressure detection means
The pressure value of detection adjusts the aperture of first adjusting means and/or second adjusting means, to adjust the escape pipe
Road and/or the aperture of the bypass branch.
Another further aspect, the present invention use following technical scheme：
A kind of control method of heat pump as described above, the control method include：
Preset the first Opening pressure threshold value P of first adjusting meansOpen 1With the first closing presure threshold value PClose 1, by described in
Current refrigerant pressure in the outlet pipe of first evaporator is defined as PGo out, work as PGo out≥POpen 1When, adjust first adjusting means
It is shown in a fully open operation, works as PGo out≤PClose 1When, adjust first adjusting means and be closed, work as PClose 1<PGo out<POpen 1When, regulation
First adjusting means is in throttle；
And/or
Preset the second Opening pressure threshold value P of second adjusting meansOpen 2With the second closing presure threshold value PClose 2, by described in
Refrigerant pressure on bypass branch is defined as PIt is other, work as PIt is other≤POpen 2When, adjust second adjusting means and be shown in a fully open operation, when
PIt is other≥PClose 2When, adjust second adjusting means and be closed, work as POpen 2<PIt is other<PClose 2When, adjust second adjusting means
In throttle.
Preferably, P is worked asClose 1<PGo out<POpen 1When, according to PGo out、PClose 1And POpen 1To determine the aperture M of first adjusting means1；
And/or
Work as POpen 2<PIt is other<PClose 2When, according to PIt is other、PClose 2And POpen 2To determine the aperture M of second adjusting means2。
Preferably, P is worked asClose 1<PGo out<POpen 1When, the aperture M of first adjusting means1Calculated using equation below：
And/or
Work as POpen 2<PIt is other<PClose 2When, the aperture M of second adjusting means2Calculated using equation below：
Another further aspect, the present invention use following technical scheme：
A kind of freezer, including multiple warm areas, in addition to heat pump, the heat pump are heat pump system as described above
System, described at least two evaporators being arranged in parallel are separately positioned in the different warm areas.
Heat pump provided by the invention includes at least two evaporators being arranged in parallel, and in the escape pipe of evaporator
The adjustable adjusting means of aperture is provided with road and on the bypass branch of compressor, different evaporators can be arranged on not
In same environmental area, circumstance temperature in varying environment region can accurately be adjusted by the aperture for adjusting each adjusting means
Section so that different temperature conditionss are formed in varying environment region, the heat pump is applied when on ship, can be in ship
Freezer in for different types of fruits and vegetables form different warm areas, so as to extend the fresh keeping time of fruits and vegetables, meet ship
The navigation demand of medium and long distance.
Brief description of the drawings
By the description to the embodiment of the present invention referring to the drawings, above-mentioned and other purpose of the invention, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the structural representation for the freezer that the specific embodiment of the invention provides.
In figure, 1, compressor；2nd, condenser；3rd, bypass branch；4th, high temperature storehouse；5th, Freezing room；6th, the first evaporator；7th,
Two evaporators；8th, gas-liquid separator；9th, oil eliminator；10th, the first electric expansion valve；11st, the second electric expansion valve；12nd, first
Pressure-regulating valve；13rd, second pressure regulating valve；14th, first pressure detection means；15th, second pressure detection means；16th, first
Blower fan；17th, the second blower fan.
Embodiment
Below based on embodiment, present invention is described, it should be understood by one skilled in the art that provided herein
Accompanying drawing is provided to the purpose of explanation, and accompanying drawing is not necessarily drawn to scale.
Unless the context clearly requires otherwise, otherwise entire disclosure is similar with the " comprising " in claims, "comprising" etc.
Word should be construed to the implication included rather than exclusive or exhaustive implication；That is, it is containing for " including but is not limited to "
Justice.
This application provides a kind of heat pump, as shown in figure 1, the heat pump includes compressor 1, condenser 2 and extremely
Few two evaporators being arranged in parallel, compressor 1, condenser 2 connect to form refrigerant with each evaporator of parallel connection by pipeline
Circulation loop, compressor 1 can be for example piston compressor, and it is preferably formed as Condensing units with condenser 2, also wrapped
Bypass branch 3, the return line of one end connection compressor 1 of bypass branch 3 are included, the other end is accessed under the gas outlet of compressor 1
Side is swum, for the part refrigerant in return line to be led to the gas outlet side of compressor 1, such as compressor 1 can be accessed
On pipeline between gas outlet and condenser 2, to reduce the back pressure of compressor 1.
Adjustable first adjusting means of aperture, bypass branch are provided with the outlet pipe of at least one of which evaporator
Adjustable second adjusting means of aperture is provided with 3, in this way, passing through the adjusting means of comprehensive adjustment first and the second adjusting means
Aperture be adjusted come the back pressure of the outlet pipe to evaporator and compressor 1, and then adjust evaporator in steaming
Pressure is sent out, is adjusted with the temperature to environment where evaporator.Wherein, the first adjusting means and the second adjusting means can be
The device of Flow-rate adjustment can be arbitrarily carried out, can be the flow control valve manually adjusted, or can be carried out certainly
The pressure-regulating valve of dynamic regulation, for example, Electromagnetic Flow regulating valve.
The various of the application heat pump and its control method will be introduced so that heat pump is applied to freezer as an example below
Embodiment, need to carry out different zones it is, of course, understood that the heat pump that the application provides can also be applied to other
The scene of temperature adjustment.
As shown in fig. 1, freezer includes high temperature storehouse 4 and Freezing room 5, and high temperature storehouse 4 is the target in the environmental area
Temperature is higher, and Freezing room 5 is that the target temperature in the environmental area is relatively low, and target temperature is needed the ring in environmental area
The temperature that border temperature adjustment arrives.Two evaporation branch roads of parallel connection are provided with heat pump, the respectively in high temperature storehouse 4
One evaporation branch road and the second evaporation branch road in Freezing room 5, wherein, the first evaporator 6 is provided with the first evaporation branch road,
The side of first evaporator 6 is provided with the first blower fan 16, is changed for bringing the air in high temperature storehouse 4 into first evaporator 6
Heat, in this way, the first blower fan 16 and the first evaporator 6 form the first air-cooler, the second evaporator is provided with the second evaporation branch road
7, the side of the second evaporator 7 is provided with the second blower fan 17, is carried out for bringing the air in Freezing room 5 into second evaporator 7
Heat exchange, in this way, the second blower fan 177 and the second evaporator form the second air-cooler.
Compressor 1 and condenser 2 are respectively positioned on outside high temperature storehouse 4 and Freezing room 5, it is preferable that in the suction line of compressor 1
Gas-liquid separator 8 is provided with, for carrying out gas-liquid separation to refrigerant before refrigerant enters the air entry of compressor 1, avoids compressing
Absorbing gas belt liquid phenomenon occurs for machine 1, is provided with oil eliminator 9 on outlet pipe, for the lubrication in the refrigerant of discharging compressor 1
Oil is separated, it is preferable that the other end of bypass branch 3 is connected with oil eliminator 9, i.e., draws the part refrigerant in return line
To oil eliminator 9, condenser 2 is discharged into again after oil eliminator 9 is interior by lubricating oil separation, so as to ensure the fortune of system
Row reliability.
The first electric expansion valve 10 is provided with the entrance pipe of the first evaporator 6, aperture is provided with outlet pipe
Adjustable first adjusting means, for example, first pressure regulating valve 12.The first tune is not provided with the outlet pipe of second evaporator 7
Regulating device.Adjustable second adjusting means of aperture, for example, second pressure regulating valve 13 are provided with bypass branch 3.First
Pressure-regulating valve 12 and second pressure regulating valve 13 are respectively provided with open mode, closed mode and throttle.In this way, by comprehensive
The aperture for closing regulation first pressure regulating valve 12 and second pressure regulating valve 13 can be achieved to high temperature storehouse 4 and the temperature of Freezing room 5
Accurate adjustment and control.The temperature in high temperature storehouse 4 is adjusted for example, can be realized by the regulation to the aperture of first pressure regulating valve 12
Section, the temperature adjustment to Freezing room 5 is realized by the regulation to the aperture of second pressure regulating valve 13.
It is further preferred that first pressure detection means 14 is provided with the outlet pipe of the first evaporator 6, for examining
The refrigerant outlet pressure of the first evaporator 6 is surveyed, second pressure detection means 15 is provided with the return line of compressor 1, is used
In the return-air refrigerant pressure of detection compressor 1, in this way, can be according to first pressure detection means 14 and second pressure detection means
The aperture of first pressure regulating valve 12, second pressure regulating valve 13 is adjusted for 15 refrigerant pressures detected, and then adjusts
The outlet pressure of the first evaporator 6 and the back pressure of compressor 1 are saved, to realize to environment temperature in high temperature storehouse 4 and Freezing room 5
The regulation of degree.For example, keep the stabilization of environment in high temperature storehouse 4 by maintaining the stabilization of the refrigerant outlet pressure of the first evaporator 6
Property, by maintaining the stabilization of return-air refrigerant pressure of compressor 1 to keep the stability of environment in Freezing room 5.It is of course also possible to
By changing first pressure regulating valve 12, the aperture of second pressure regulating valve 13 come the storehouse temperature progress to high temperature storehouse 4 and Freezing room 5
Regulation.
In a specific control method, environment temperature in high temperature storehouse 4 passes through the escape pipe for controlling the first evaporator 6
Refrigerant pressure in road is adjusted, and specifically, first pressure regulating valve 12 has the first Opening pressure threshold value POpen 1And the
One closing presure threshold value PClose 1, the current refrigerant in the outlet pipe for the first evaporator 6 that first pressure detection means 14 detects
Pressure is defined as PGo out, the aperture of first pressure regulating valve 12 is defined as M1, control method includes：
Work as PGo out≥POpen 1When, first pressure regulating valve 12 is shown in a fully open operation, i.e. the aperture M of first pressure regulating valve 121For
1；
Work as PGo out≤PClose 1When, first pressure regulating valve 12 is closed, i.e. the aperture M of first pressure regulating valve 121For
0；
Work as PClose 1<PGo out<POpen 1When, first pressure regulating valve 12 is in the aperture M of throttle, i.e. first pressure regulating valve 121
To be less than 1 more than 0.
The aperture M of first pressure regulating valve 121Can be according to PGo out、PClose 1And POpen 1To determine, aperture M1With PGo outIncrease and increase
Greatly, for example, in a preferred embodiment, the aperture M of first pressure regulating valve 121Calculated using equation below：
The environment temperature in high temperature storehouse 4 is enabled to keep constant by above-mentioned control method.
Second pressure regulating valve 13 has second Opening pressure threshold value the second Opening pressure threshold value POpen 2And second close pressure
Force threshold PClose 2, the refrigerant pressure on bypass branch 3 that second pressure detection means 15 detects is defined as PIt is other, second pressure tune
The aperture of section valve 15 is defined as M2, control method includes：
Work as PIt is other≤POpen 2When, second pressure regulating valve 15 is shown in a fully open operation, i.e. the aperture M of second pressure regulating valve 152For
1；
Work as PIt is other≥PClose 2When, second pressure regulating valve 15 is closed, i.e. the aperture M of second pressure regulating valve 152For
0；
Work as POpen 2<PIt is other<PClose 2When, second pressure regulating valve 15 is in the aperture M of throttle, i.e. second pressure regulating valve 152
To be less than 1 more than 0.
The aperture M of second pressure regulating valve 152Can be according to PIt is other、PClose 2And POpen 2To determine, aperture M2With PIt is otherIncrease and subtract
It is small, for example, in a preferred embodiment, the aperture M of second pressure regulating valve 152Calculated using equation below：
The environment temperature in Freezing room 5 is enabled to keep constant by above-mentioned control method.
It is further preferred that because the preservation temperature that fruits and vegetables are needed different in the period of is different, high temperature storehouse 4 and Freezing room 5
The adjustment of adaptability can be also carried out to storehouse temperature with the passage of time, to meet fresh-keeping demand of the fruits and vegetables in different times, from
And further extend the fresh-keeping duration of fruits and vegetables.
It is, of course, understood that evaporator is not limited to be two, or more than three, other evaporators
Aperture adjustable adjusting means can also be set on outlet pipe, to adjust the outlet refrigerant pressure of its corresponding evaporator,
And then the temperature where adjusting evaporator in environmental area.Freezer can also include the freezer that target temperature is other temperature ranges
Area, different evaporators is separately positioned in different freezer areas, to obtain the freezer with different temperatures region, can distinguished
Fruits and vegetables with different preservation temperatures are placed in its corresponding freezer area.
For those skilled in the art it is easily understood that on the premise of not conflicting, above-mentioned each preferred scheme can be free
Ground combination, superposition.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For, the present invention can have various changes and change.All any modifications made within spirit and principles of the present invention, it is equal
Replace, improve etc., it should be included in the scope of the protection.
Claims (12)
1. a kind of heat pump, it is characterised in that compressor, condenser and extremely are provided with the refrigerant flow of the heat pump
Few two evaporators being arranged in parallel, the adjustable first regulation dress of aperture is provided with the outlet pipe of at least one evaporator
Put, bypass branch is provided with the return line of the compressor, one end of the bypass branch connects the return line, separately
The downstream of the compressor outlet is accessed in one end, and adjustable second adjusting means of aperture is provided with the bypass branch.
2. heat pump according to claim 1, it is characterised in that be provided with the escape pipe of first adjusting means
First pressure detection means is additionally provided with road；
And/or
Second pressure detection means is provided with the return line of the compressor.
3. heat pump according to claim 1, it is characterised in that the heat pump also includes oil eliminator, described
Oil eliminator is arranged on the gas exhaust piping of the compressor, and the other end of the bypass branch connects with the oil eliminator.
4. the heat pump according to one of claims 1 to 3, it is characterised in that described at least two steamings being arranged in parallel
Hair device is located in different environmental areas.
5. heat pump according to claim 4, it is characterised in that the different environmental area has different targets
Temperature.
6. heat pump according to claim 4, it is characterised in that the different environmental area includes first environment area
Domain and second environment region, described at least two evaporators being arranged in parallel include first in the first environment region
Evaporator and the second evaporator in the second environment region, the target temperature in the first environment region is higher than described
The target temperature in second environment region, first adjusting means is provided with the outlet pipe of first evaporator, it is described
First adjusting means is not provided with the outlet pipe of second evaporator.
A kind of 7. control method of heat pump as described in one of claim 4 to 6, it is characterised in that the control method
Including：The different environment is adjusted by adjusting the aperture of first adjusting means and/or second adjusting means
The temperature in region.
8. control method according to claim 7, it is characterised in that be provided with the escape pipe of first adjusting means
First pressure detection means is additionally provided with road, second pressure detection means is provided with the return line of the compressor；
The control method further comprises：Detected according to the first pressure detection means and the second pressure detection means
Pressure value adjust the aperture of first adjusting means and/or second adjusting means, with adjust the outlet pipe and/
Or the aperture of the bypass branch.
9. a kind of control method of heat pump as claimed in claim 6, it is characterised in that the control method includes：
Preset the first Opening pressure threshold value P of first adjusting meansOpen 1With the first closing presure threshold value PClose 1, by described first
Current refrigerant pressure in the outlet pipe of evaporator is defined as PGo out, work as PGo out≥POpen 1When, adjust first adjusting means and be in
Full-gear, work as PGo out≤PClose 1When, adjust first adjusting means and be closed, work as PClose 1<PGo out<POpen 1When, described in regulation
First adjusting means is in throttle；
And/or
Preset the second Opening pressure threshold value P of second adjusting meansOpen 2With the second closing presure threshold value PClose 2, by the bypass
Refrigerant pressure on branch road is defined as PIt is other, work as PIt is other≤POpen 2When, adjust second adjusting means and be shown in a fully open operation, work as PIt is other≥
PClose 2When, adjust second adjusting means and be closed, work as POpen 2<PIt is other<PClose 2When, adjust second adjusting means and be in
Throttle.
10. control method according to claim 9, it is characterised in that work as PClose 1<PGo out<POpen 1When, according to PGo out、PClose 1And POpen 1Come
Determine the aperture M of first adjusting means1；
And/or
Work as POpen 2<PIt is other<PClose 2When, according to PIt is other、PClose 2And POpen 2To determine the aperture M of second adjusting means2。
11. control method according to claim 10, it is characterised in that work as PClose 1<PGo out<POpen 1When, first adjusting means
Aperture M1Calculated using equation below：
And/or
Work as POpen 2<PIt is other<PClose 2When, the aperture M of second adjusting means2Calculated using equation below：
12. a kind of freezer, including multiple warm areas, it is characterised in that also including heat pump, the heat pump is that right such as will
The heat pump described in one of 1 to 6 is sought, described at least two evaporators being arranged in parallel are separately positioned on the different warm areas
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725736.9A CN107490231A (en) | 2017-08-22 | 2017-08-22 | Heat pump system, control method thereof and refrigeration house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725736.9A CN107490231A (en) | 2017-08-22 | 2017-08-22 | Heat pump system, control method thereof and refrigeration house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107490231A true CN107490231A (en) | 2017-12-19 |
Family
ID=60646355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710725736.9A Pending CN107490231A (en) | 2017-08-22 | 2017-08-22 | Heat pump system, control method thereof and refrigeration house |
Country Status (1)
| Country | Link |
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| CN (1) | CN107490231A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826820A (en) * | 2018-04-24 | 2018-11-16 | 深圳市共济科技股份有限公司 | A kind of refrigerating method of more temperature control freezers and the refrigeration system of more temperature control freezers |
| CN109028666A (en) * | 2018-07-27 | 2018-12-18 | 安徽益宁信息工程科技有限公司 | A kind of regulation accurately grain depot inner ring road temperature control pipeline device |
Citations (13)
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| CN108826820A (en) * | 2018-04-24 | 2018-11-16 | 深圳市共济科技股份有限公司 | A kind of refrigerating method of more temperature control freezers and the refrigeration system of more temperature control freezers |
| CN108826820B (en) * | 2018-04-24 | 2021-02-02 | 深圳市共济科技股份有限公司 | Refrigeration method of multi-temperature control refrigeration house and refrigeration system of multi-temperature control refrigeration house |
| CN109028666A (en) * | 2018-07-27 | 2018-12-18 | 安徽益宁信息工程科技有限公司 | A kind of regulation accurately grain depot inner ring road temperature control pipeline device |
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