CN106403409A - Low-temperature enthalpy increasing and refrigerating system and working mode - Google Patents
Low-temperature enthalpy increasing and refrigerating system and working mode Download PDFInfo
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- CN106403409A CN106403409A CN201610947437.5A CN201610947437A CN106403409A CN 106403409 A CN106403409 A CN 106403409A CN 201610947437 A CN201610947437 A CN 201610947437A CN 106403409 A CN106403409 A CN 106403409A
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- heat exchanger
- coolant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- 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
- F25B30/00—Heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- 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
Abstract
The invention discloses a low-temperature enthalpy increasing and refrigerating system. The system comprises a main compressor, an auxiliary compressor, a first four-way valve, a second four-way valve, a heat storage box, a condenser, a supercooling heat exchanger, a first enthalpy increasing heat exchanger, a second enthalpy increasing heat exchanger, an auxiliary heating heat exchanger, an outdoor evaporator, a first liquid storage device, a second liquid storage device, a first enthalpy increasing stop valve, a second enthalpy increasing stop valve, a first enthalpy increasing throttling part, a second enthalpy increasing throttling part, a first throttling part, a second throttling part, a third throttling part, a first one-way valve and a second one-way valve which are connected to form a main refrigerating system and an auxiliary refrigerating system. The main refrigerating system comprises a main refrigerating flow path and a main enthalpy increasing flow path. The auxiliary refrigerating system comprises an auxiliary refrigerating flow path and an auxiliary enthalpy increasing flow path.
Description
Technical field
The present invention relates to the technical field of air-conditioning heat pump, refer in particular to a kind of low-temperature enthalpy-increasing refrigeration system and working method.
Background technology
Existing water heater species is various, which includes air-source water heater, and wherein, air-source water heater efficiency is limited by
Ambient temperature, ambient temperature more high product more energy-conservation, ambient temperature is got over low yield product efficiency and is declined therewith.Traditional air energy thermal water
Device is mainly used for the Changjiang river areas to the south, and the area of North of Yangtze River is low because of winter temperature, and air-source water heater Energy Efficiency Ratio declines, mistake
Low temperature will lead to traditional air energy unit cannot normally run.
Secondly, existing spray liquid enthalpy gain system, in order to increase circulation stream coolant quantity, condensator outlet coolant one is divided into
Two, a part of coolant enters compressor by spray liquid enthalpy gain branch road, for improving refrigerating system coolant circulating load, reduces compression
Than；Another part coolant flows to outdoor evaporator heat absorption evaporation, and because refrigerant evaporation quantitative change is few, refrigeration system heating capacity diminishes,
Efficiency step-down.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, one kind is provided to be applied to ultra-low temperature surroundings, stable
Reliable low-temperature enthalpy-increasing refrigeration system and working method.
In order to realize above-mentioned purpose, a kind of low-temperature enthalpy-increasing refrigeration system provided by the present invention, include with lower component：
Main compressor, auxiliary compressor, the first cross valve, the second cross valve, heat storage tank, condenser, cold heat exchanger, the first increasing enthalpy excessively are changed
Hot device, the second increasing enthalpy heat exchanger, auxiliary heat exchanger, outdoor evaporator, the first reservoir, the second reservoir, the first increasing enthalpy cut-off
Valve, the second increasing enthalpy stop valve, the first increasing enthalpy throttle part, the second increasing enthalpy throttle part, first throttle part, the second restriction
Part, the 3rd throttle part, the first check valve and the second check valve, wherein, described first cross valve and the second cross valve all contain
Tetra- interfaces of D, S, C, E, described first increasing enthalpy heat exchanger contains tetra- interfaces of a, b, c, d, described cross cold heat exchanger contain e, f,
Tetra- interfaces of g, h, described second increasing enthalpy heat exchanger contains tetra- interfaces of i, j, m, n, and described auxiliary heat exchanger contains p, q, s, t tetra-
Individual interface；Described condenser is installed in heat storage tank；Connected by above-mentioned each part and constitute main refrigeration system and auxiliary cooling
System, wherein, described main refrigeration system includes main refrigeration circuit and main increasing enthalpy stream, and described auxiliary cooling system includes auxiliary
Help refrigeration circuit and auxiliary increasing enthalpy stream.
The connection composition of described main refrigeration circuit：Described first cross valve interface D and interface S respectively with the going out of main compressor
Mouthful it is connected with import, described cross valve interface C is connected with the condenser in heat storage tank, described first check valve and first segment
The stream unit two ends after connection and parallel connection that are in parallel are connected with condenser and mistake cold heat exchanger interface f respectively, wherein, described the
One check valve input is connected with condenser and its outfan is connected with cold heat exchanger interface f excessively, described cold heat exchanger excessively
Interface e is connected with the first reservoir, and described first reservoir is connected with the first increasing enthalpy heat exchanger interface d, described second section
Stream unit be in parallel with the second check valve be connected and parallel connection after two ends respectively with the first increasing enthalpy heat exchanger interface c and outdoor evaporation
Device is connected, and wherein, described second check valve outfan is connected with the first increasing enthalpy heat exchanger interface c and its input and outdoor
Vaporizer is connected, and described auxiliary heat exchanger interface p is connected with outdoor evaporator and the first cross valve interface E respectively with interface q
Connect.
The connection composition of described main increasing enthalpy stream：Described first increasing enthalpy stop valve two ends respectively with the first reservoir and first
Increasing enthalpy throttle part is connected, and described first increasing enthalpy throttle part is connected with the first increasing enthalpy heat exchanger interface a, described first increasing
Enthalpy heat exchanger interface b is connected with main compressor import.
The connection composition of described auxiliary cooling stream：Described second cross valve interface D and interface S respectively with auxiliary compressor
Export and import be connected, described second cross valve interface E and interface C respectively with cross cold heat exchanger interface h and auxiliary hot heat exchange
Device interface s is connected, described 3rd throttle part two ends respectively with cross cold heat exchanger interface g and the second increasing enthalpy heat exchanger interface m
It is connected, described second reservoir is connected with the second increasing enthalpy heat exchanger interface n and auxiliary heat exchanger interface t respectively.
The connection composition of described auxiliary increasing enthalpy stream：Described second increasing enthalpy stop valve two ends respectively with the second reservoir and
Two increasing enthalpy throttle parts are connected, and described second increasing enthalpy throttle part is connected with the second increasing enthalpy heat exchanger interface i, and described second
Increasing enthalpy heat exchanger interface j is connected with auxiliary compressor import.
Further, it is provided with heat transferring medium in described heat storage tank.
Further, the coolant of described main refrigeration system and the coolant of auxiliary cooling system all change in cold heat exchanger and auxiliary heat excessively
Carry out heat exchange in hot device.
A kind of working method of low-temperature enthalpy-increasing refrigeration system, described low-temperature enthalpy-increasing refrigeration system includes low-temperature heating pattern
And refrigeration mode.
Described low-temperature heating pattern：When outdoor environment temperature is less than setting value, described low-temperature enthalpy-increasing refrigeration system opens master
Refrigeration system and auxiliary cooling system；The working method of described main refrigeration system：The coolant of High Temperature High Pressure is flowed into by main compressor
First cross valve interface D, then flows to heat storage tank inner condenser by the first cross valve interface C, coolant is in condenser and heat storage tank
Interior heat transferring medium carries out heat exchange, and the coolant after heat release cooling flows to the first check valve by condenser, then unidirectional by first
Valve flowed to cold heat exchanger interface f, coolant heat release cooling in cold heat exchanger excessively, and the coolant after heat release cooling is by cold heat exchanger excessively
Interface e flows to the first reservoir, then flows to the first increasing enthalpy heat exchanger interface d by the first reservoir, and coolant changes in the first increasing enthalpy
After heat release cooling, the second throttle part is flowed to by the first increasing enthalpy heat exchanger interface c in hot device, the coolant after throttling is by second section
Stream unit flows to outdoor evaporator, and coolant flows to auxiliary heat exchanger by outdoor evaporator after outdoor evaporator interior suction thermal evaporation and connects
Mouth p, coolant, after auxiliary heat exchanger interior suction thermal evaporation, then flows to the first cross valve interface E by auxiliary heat exchanger interface q, connects
And main compressor is flowed to by the first cross valve interface S；The working method of described auxiliary cooling system：The coolant of High Temperature High Pressure is by auxiliary
Help compressor to flow into the second cross valve interface D, then auxiliary heat exchanger interface s is flowed to by the second cross valve interface C, coolant is auxiliary
Heat release cooling in heat exchanger, the coolant after heat release cooling flows to the second reservoir by auxiliary heat exchanger interface t, then by second
Reservoir flows to the second increasing enthalpy heat exchanger interface n, and coolant then flows to the 3rd throttle part, warp knuckle by increasing enthalpy heat exchanger interface m
Coolant after stream flowed to cold heat exchanger interface g by the 3rd throttle part, and coolant is crossing cold heat exchanger interior suction thermal evaporation, heat absorption steaming
After sending out, coolant flows to the second cross valve interface E by crossing cold heat exchanger interface h, then flows back to auxiliary pressure by the second cross valve interface S
Contracting machine.
Further, described auxiliary cooling system receives described main refrigerating system coolant through accumulation of heat in described cold heat exchanger interior suction of crossing
Coolant waste heat after case heat release is heating, thus reducing inflow outdoor evaporator coolant condensation temperature, auxiliary cooling system is realized
The supercool function to main refrigeration system.
Further, cross supercool first and described the of cold heat exchanger through described before described coolant flows into described outdoor evaporator
One increasing enthalpy heat exchanger secondary supercool, main refrigerating system coolant realizes multiple supercool function.
Further, described main refrigeration system absorbs the made heat of described auxiliary cooling system in described auxiliary heat exchanger
Amount, makes main refrigerating system coolant continue evaporation through the still unevaporated coolant of outdoor evaporator, auxiliary cooling system is realized to main system
Cooling system enthalpy-increasing function.
The present invention adopts above-mentioned scheme, and its advantage is the group by main refrigeration system and auxiliary cooling system
Close, using auxiliary cooling system, main refrigeration system is carried out with increasing enthalpy and supercool, make low-temperature enthalpy-increasing refrigeration system at low ambient temperatures
Stable；Secondly, auxiliary heat exchanger is heated to main refrigeration system heat supply increasing enthalpy by auxiliary cooling system, so that low
Warm increasing enthalpy refrigeration system can be heated by the heat that the heat in absorption air and aid system provide, and then improve and heat
Amount；In addition, using auxiliary cooling system to the coolant waste heat crossing the outflow of the main refrigeration system of cold heat exchanger refrigerant charge condensed device,
Thus reducing the condensation temperature of main refrigerating system coolant, improve the degree of supercooling of coolant, and then improve low-temperature enthalpy-increasing refrigeration system
Energy Efficiency Ratio.
Brief description
Fig. 1 is the low-temperature enthalpy-increasing refrigeration system schematic diagram of the present invention.
Fig. 2 is the low-temperature heating pattern schematic diagram of the present invention.
Fig. 3 is the refrigeration mode schematic diagram of the present invention.
Wherein, 1- main compressor, 2- auxiliary compressor, 31- first cross valve, 32- second cross valve, 4- heat storage tank, 41-
Condenser, 5- crosses cold heat exchanger, the auxiliary heat exchanger of 6-, 71- the first increasing enthalpy heat exchanger, 72- the second increasing enthalpy heat exchanger, 8- outdoor steaming
Send out device, 91- first reservoir, 92- second reservoir, 101- first check valve, 102- second check valve, 111- first throttle portion
Part, 112- second throttle part, 113- the 3rd throttle part, 121- the first increasing enthalpy stop valve, 122- the second increasing enthalpy stop valve,
131- the first increasing enthalpy throttle part, 132- the second increasing enthalpy throttle part.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
Referring to shown in accompanying drawing 1, in the present embodiment, a kind of low-temperature enthalpy-increasing refrigeration system, includes with lower component：Main compression
Machine 1, auxiliary compressor 2, the first cross valve 31, the second cross valve 32, heat storage tank 4, condenser 41, cold heat exchanger 5, first excessively increase
Enthalpy heat exchanger 71, the second increasing enthalpy heat exchanger 72, auxiliary heat exchanger 6, outdoor evaporator 8, the first reservoir 91, the second reservoir
92nd, the first increasing enthalpy stop valve 121, the second increasing enthalpy stop valve 122, the first increasing enthalpy throttle part 131, the second increasing enthalpy throttle part
132nd, first throttle part 111, the second throttle part 112, the 3rd throttle part 113, the first check valve 101 and the second check valve
102, wherein, described first cross valve 31 and the second cross valve 32 are all containing tetra- interfaces of D, S, C, E, described first increasing enthalpy heat exchange
Device 71 contains tetra- interfaces of a, b, c, d, and described cold heat exchanger 5 of crossing contains tetra- interfaces of e, f, g, h, described second increasing enthalpy heat exchanger
72 contain tetra- interfaces of i, j, m, n, and described auxiliary heat exchanger 6 contains tetra- interfaces of p, q, s, t；Described condenser 41 is installed on storage
In hot tank 4；It is provided with heat transferring medium in described heat storage tank 4；The coolant of described main refrigeration system and the coolant of auxiliary cooling system
All in cold heat exchanger 5 and auxiliary heat exchanger 6 excessively, carry out heat exchange.
Connected by above-mentioned each part and constitute main refrigeration system and auxiliary cooling system, wherein, described main refrigeration system
Include main refrigeration circuit and main increasing enthalpy stream, described auxiliary cooling system includes auxiliary cooling stream and auxiliary increasing enthalpy stream
Road.
1）Main refrigeration system：The connection composition of main refrigeration circuit：Described first cross valve 31 interface D and interface S respectively with
The export and import of main compressor 1 is connected, and described cross valve interface C is connected with the condenser 41 in heat storage tank 4, and described
One check valve 101 be in parallel with first throttle part 111 be connected and parallel connection after two ends respectively with condenser 41 and supercool heat exchange
Device 5 interface f is connected, and wherein, described first check valve 101 input is connected with condenser 41 and its outfan is changed with supercool
Hot device 5 interface f is connected, and the described cold heat exchanger 5 interface e that crosses is connected with the first reservoir 91, described first reservoir 91 and
First increasing enthalpy heat exchanger 71 interface d is connected, and described second throttle part 112 is in parallel with the second check valve 102 and is connected and simultaneously
Two ends after connection are connected with the first increasing enthalpy heat exchanger 71 interface c and outdoor evaporator 8 respectively, wherein, described second check valve
102 outfans are connected with the first increasing enthalpy heat exchanger 71 interface c and its input is connected with outdoor evaporator 8, described auxiliary heat
Heat exchanger 6 interface p is connected with outdoor evaporator 8 and the first cross valve 31 interface E respectively with interface q.The company of main increasing enthalpy stream
Connect composition：Described first increasing enthalpy stop valve 121 two ends are connected with the first reservoir 91 and the first increasing enthalpy throttle part 131 respectively
Connect, described first increasing enthalpy throttle part 131 is connected with the first increasing enthalpy heat exchanger 71 interface a, described first increasing enthalpy heat exchanger 71
Interface b is connected with main compressor 1 import.By the main refrigeration circuit of above-mentioned main refrigeration system and the connection of main increasing enthalpy stream,
Constitute the main refrigeration system of low-temperature enthalpy-increasing refrigeration system.
2）Auxiliary cooling system：The connection composition of auxiliary cooling stream：Described second cross valve 32 interface D and interface S divides
Be not connected with the export and import of auxiliary compressor 2, described second cross valve 32 interface E and interface C respectively with supercool heat exchange
Device 5 interface h is connected with auxiliary heat exchanger 6 interface s, described 3rd throttle part 113 two ends respectively with cross cold heat exchanger 5 interface
G and the second increasing enthalpy heat exchanger 72 interface m is connected, described second reservoir 92 respectively with the second increasing enthalpy heat exchanger 72 interface n and
Auxiliary heat exchanger 6 interface t is connected；The connection composition of auxiliary increasing enthalpy stream：Second increasing enthalpy stop valve 122 two ends are respectively with second
Reservoir 92 is connected with the second increasing enthalpy throttle part 132, described second increasing enthalpy throttle part 132 and the second increasing enthalpy heat exchanger 72
Interface i is connected, and described second increasing enthalpy heat exchanger 72 interface j is connected with auxiliary compressor 2 import.By above-mentioned auxiliary cooling
Stream and the connection of auxiliary increasing enthalpy stream, constitute the auxiliary cooling system of low-temperature enthalpy-increasing refrigeration system.
Low-temperature enthalpy-increasing refrigeration system is constituted by the connection of above-mentioned main refrigeration system and auxiliary cooling system.Low-temperature enthalpy-increasing
Refrigeration system is provided with auxiliary heat exchanger 6, and by using auxiliary cooling system, auxiliary heat exchanger 6 being heated provides to main refrigeration system
Auxiliary heat, the still unevaporated coolant through outdoor evaporator 8 enters in auxiliary heat exchanger 6 and absorbs auxiliary thermal evaporation again, thus realizing
Auxiliary refrigeration heat system heats to main refrigeration system increasing enthalpy；Secondly, low-temperature enthalpy-increasing refrigeration system was provided with cold heat exchanger 5, by profit
To absorb the main refrigerating system coolant waste heat that condensed device 41 flows out with auxiliary cooling system to crossing cold heat exchanger 5 refrigeration, thus
Reduce the condensation temperature of main refrigerating system coolant, improve degree of supercooling, and then realize auxiliary cooling system and freeze to main refrigeration system
Supercool；In addition, in order to prevent from because auxiliary hot heating load fluctuates affecting main refrigeration system and normally running, by being provided with the first increasing enthalpy
Heat exchanger 71 and main increasing enthalpy stream；In order to increase auxiliary cooling system refrigerant circulation, by being provided with the second increasing enthalpy heat exchanger
72 and auxiliary increasing enthalpy stream.
In conjunction with concrete accompanying drawing, the working method of low-temperature enthalpy-increasing refrigeration system is illustrated.
A kind of working method of low-temperature enthalpy-increasing refrigeration system, includes low-temperature heating pattern and refrigeration mode.
1）Low-temperature heating pattern：Referring to shown in accompanying drawing 2, in the present embodiment, when outdoor environment temperature is less than setting value,
Described low-temperature enthalpy-increasing refrigeration system starts main refrigeration system and auxiliary cooling system.
The working method of main refrigeration system：The coolant of High Temperature High Pressure flows into the first cross valve 31 interface D by main compressor 1,
Then heat storage tank 4 inner condenser 41 is flowed to by the first cross valve 31 interface C, heat exchange in condenser 41 with heat storage tank 4 for the coolant
Medium carries out heat exchange, and the coolant after heat release cooling flows to the first check valve 101 by condenser 41, then by the first check valve
101 flowed to cold heat exchanger 5 interface f, coolant heat release cooling in cold heat exchanger 5 excessively, and the coolant after heat release cooling is changed by supercool
Hot device 5 interface e flows to the first reservoir 91, then flows to the first increasing enthalpy heat exchanger 71 interface d by the first reservoir 91, and coolant exists
After heat release cooling, the second throttle part 112 is flowed to by the first increasing enthalpy heat exchanger 71 interface c in first increasing enthalpy heat exchanger 71, through throttling
Coolant afterwards flows to outdoor evaporator 8 by the second throttle part 112, and coolant is after outdoor evaporator 8 interior suction thermal evaporation by outdoor
Vaporizer 8 flows to auxiliary heat exchanger 6 interface p, and coolant, after the interior suction thermal evaporation of auxiliary heat exchanger 6, is then connect by auxiliary heat exchanger 6
Mouth q flows to the first cross valve 31 interface E, then flows to main compressor 1 by the first cross valve 31 interface S；By above-mentioned stream
Circulation, realizes the increasing enthalpy of main refrigeration system, the supercool and function that heats.
The working method of auxiliary cooling system：The coolant of High Temperature High Pressure flows into the second cross valve 32 by auxiliary compressor 2 and connects
Mouth D, then flows to auxiliary heat exchanger 6 interface s by the second cross valve 32 interface C, coolant heat release cooling in auxiliary heat exchanger 6,
Coolant after heat release cooling flows to the second reservoir 92 by auxiliary heat exchanger 6 interface t, then flows to second by the second reservoir 92
Increasing enthalpy heat exchanger 72 interface n, coolant then flows to the 3rd throttle part 113 by increasing enthalpy heat exchanger interface m, through the coolant after throttling
Cold heat exchanger 5 interface g was flowed to by the 3rd throttle part 113, coolant is crossing cold heat exchanger 5 interior suction thermal evaporation, after heat absorption evaporation
Coolant flows to the second cross valve 32 interface E by crossing cold heat exchanger 5 interface h, then flows back to auxiliary pressure by the second cross valve 32 interface S
Contracting machine 2；By the circulation of above-mentioned stream, realize auxiliary cooling system hot increasing enthalpy auxiliary to main refrigeration system and heat absorption is supercool.
On the basis of the working method of low-temperature heating pattern, when auxiliary cooling system heating capacity is not enough, it is maintainer
System is normal to be run, and opens the first increasing enthalpy stop valve 121 in main refrigeration system, and coolant is divided into two branch road through the first reservoir 91,
Refrigeration circuit based on one branch road, increasing enthalpy stream based on another branch road, wherein, the coolant on main increasing enthalpy stream is ended by the first increasing enthalpy
Valve 121 flows to the first increasing enthalpy throttle part 131, and the coolant after throttling flows to the first increasing enthalpy by the first increasing enthalpy throttle part 131
Heat exchanger 71 interface a, coolant after the first increasing enthalpy heat exchanger 71 interior suction thermal evaporation, heat absorption evaporation for the coolant on main increasing enthalpy stream
Main compressor 1 is flowed back to by the first increasing enthalpy heat exchanger 71 interface b；By the circulation of above-mentioned stream, realize the increasing to main refrigeration system
Enthalpy.
On the basis of the working method of low-temperature heating pattern, when the refrigerant temperature of condenser 41 outflow of main refrigeration system
Less than setting value, normally run for holding system, open the second increasing enthalpy stop valve 122 on auxiliary increasing enthalpy stream, coolant is through the
Be divided into two after two reservoirs 92 branch road, and a branch road is auxiliary refrigeration circuit, and another branch road is auxiliary increasing enthalpy stream, wherein,
Auxiliary increasing enthalpy stream on coolant the second increasing enthalpy throttle part 132 is flowed to by the second increasing enthalpy stop valve 122, through throttling coolant by
Second increasing enthalpy throttle part 132 flows to the second increasing enthalpy heat exchanger 72 interface i, and coolant absorbs heat steaming in the second increasing enthalpy heat exchanger 72
Send out, the coolant after heat absorption evaporation flows to auxiliary compressor 2 by the second increasing enthalpy heat exchanger 72 interface j.By the circulation of above-mentioned stream,
Realize the increasing enthalpy to auxiliary cooling system.
By the stream circulation of above-mentioned main refrigeration system and auxiliary cooling system, by auxiliary heat exchanger 6 and the first increasing enthalpy
Heat exchanger 71 improving the refrigerant circulation of main refrigeration system, by crossing cold heat exchanger 5 and the dual mistake of the first increasing enthalpy heat exchanger 71
Cold to improve the coolant degree of supercooling of main refrigeration, make system realize efficiently heating and stable operation under ultra-low temperature surroundings.
2）Refrigeration mode：Referring to shown in accompanying drawing 3, in the present embodiment, when low-temperature enthalpy-increasing refrigeration system need to be entered to heat storage tank 4
During row refrigeration, close increasing enthalpy stop valve and the auxiliary cooling system of main refrigeration system.The coolant of High Temperature High Pressure is flowed by main compressor 1
To the first cross valve 31 interface D, then auxiliary heat exchanger 6 interface q is flowed to by the first cross valve 31 interface E, coolant is then by auxiliary
Heat exchanger 6 interface p flows to outdoor evaporator 8, coolant in outdoor evaporator 8 heat release cooling, heat release cooling after coolant by
Second check valve 102 flows to the first increasing enthalpy heat exchanger 71 interface c, and coolant then flows to by the first increasing enthalpy heat exchanger 71 interface d
One reservoir 91, then flowed to cold heat exchanger 5 interface e by the first reservoir 91, and coolant is then by cold heat exchanger 5 interface f excessively
Flow to first throttle part 111, the coolant after throttling is flowed to the condenser 41 in heat storage tank 4 by first throttle part 111, cold
Matchmaker carries out heat exchange with heat transferring medium in heat storage tank 4 in condenser 41, and the coolant after heat absorption evaporation flows to the by condenser 41
One cross valve 31 interface C, then by the first cross valve 31 interface C, flows back to compressor；By the circulation of above-mentioned stream, it is right to realize
The refrigeration of heat storage tank 4.
The embodiment of the above is only presently preferred embodiments of the present invention, and not the present invention is done with any pro forma limit
System.Any those of ordinary skill in the art, without departing under technical solution of the present invention ambit, using the skill of the disclosure above
Art content makes more possible variations and retouching to technical solution of the present invention, or modification is the Equivalent embodiments of the present invention.
Therefore all contents without departing from technical solution of the present invention, the equivalent equivalence changes made according to the thinking of the present invention, all should be covered by
In protection scope of the present invention.
Claims (9)
1. a kind of low-temperature enthalpy-increasing refrigeration system, includes with lower component：Main compressor（1）, auxiliary compressor（2）, the first four-way
Valve（31）, the second cross valve（32）, heat storage tank（4）, condenser（41）, cross cold heat exchanger（5）, auxiliary heat exchanger（6）, first
Increasing enthalpy heat exchanger（71）, the second increasing enthalpy heat exchanger（72）, outdoor evaporator（8）, the first reservoir（91）, the second reservoir
（92）, the first check valve（101）, the second check valve（102）, first throttle part（111）, the second throttle part（112）, the 3rd
Throttle part（113）, the first increasing enthalpy stop valve（121）, the second increasing enthalpy stop valve（122）, the first increasing enthalpy throttle part（131）With
Second increasing enthalpy throttle part（132）, wherein, described first cross valve（31）With the second cross valve（32）All containing D, S, C, E tetra-
Individual interface, described first increasing enthalpy heat exchanger（71）Containing tetra- interfaces of a, b, c, d, described cold heat exchanger excessively（5）Containing e, f, g, h
Four interfaces, described second increasing enthalpy heat exchanger（72）Containing tetra- interfaces of i, j, m, n, described auxiliary heat exchanger（6）Containing p, q,
Tetra- interfaces of s, t it is characterised in that：Described condenser（41）It is installed on heat storage tank（4）Interior；Composition is connected by above-mentioned each part
Main refrigeration system and auxiliary cooling system, wherein, described main refrigeration system includes main refrigeration circuit and main increasing enthalpy stream, institute
State auxiliary cooling system and include auxiliary cooling stream and auxiliary increasing enthalpy stream；The connection composition of described main refrigeration circuit：Described
First cross valve（31）Interface D and interface S respectively with main compressor（1）Export and import be connected, described cross valve interface C
With heat storage tank（4）Interior condenser（41）It is connected, described first check valve（101）With first throttle part（111）It is in parallel
Connect and parallel connection after two ends respectively with condenser（41）With cold heat exchanger excessively（5）Interface f is connected, and wherein, described first is single
To valve（101）Input and condenser（41）It is connected and its outfan and cold heat exchanger excessively（5）Interface f is connected, described mistake
Cold heat exchanger（5）Interface e and the first reservoir（91）It is connected, described first reservoir（91）With the first increasing enthalpy heat exchanger（71）
Interface d is connected, described second throttle part（112）With the second check valve（102）Be in parallel connection and parallel connection after two ends divide
Not with the first increasing enthalpy heat exchanger（71）Interface c and outdoor evaporator（8）It is connected, wherein, described second check valve（102）Output
End and the first increasing enthalpy heat exchanger（71）Interface c is connected and its input and outdoor evaporator（8）It is connected, described auxiliary hot heat exchange
Device（6）Interface p and interface q respectively with outdoor evaporator（8）With the first cross valve（31）Interface E is connected；Described main increasing enthalpy stream
The connection composition on road：Described first increasing enthalpy stop valve（121）Two ends respectively with the first reservoir（91）With the first increasing enthalpy restriction
Part（131）It is connected, described first increasing enthalpy throttle part（131）With the first increasing enthalpy heat exchanger（71）Interface a is connected, and described
One increasing enthalpy heat exchanger（71）Interface b and main compressor（1）Import is connected；The connection composition of described auxiliary cooling stream：Described
Second cross valve（32）Interface D and interface S respectively with auxiliary compressor（2）Export and import be connected, described second four-way
Valve（32）Interface E and interface C respectively with cross cold heat exchanger（5）Interface h and auxiliary heat exchanger（6）Interface s is connected, and the described 3rd
Throttle part（113）Two ends respectively with cross cold heat exchanger（5）Interface g and the second increasing enthalpy heat exchanger（72）Interface m is connected, described
Second reservoir（92）Respectively with the second increasing enthalpy heat exchanger（72）Interface n and auxiliary heat exchanger（6）Interface t is connected；Described auxiliary
The connection helping increasing enthalpy stream forms：Described second increasing enthalpy stop valve（122）Two ends respectively with the second reservoir（92）With the second increasing
Enthalpy throttle part（132）It is connected, described second increasing enthalpy throttle part（132）With the second increasing enthalpy heat exchanger（72）Interface i is connected
Connect, described second increasing enthalpy heat exchanger（72）Interface j and auxiliary compressor（2）Import is connected.
2. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 1 it is characterised in that：Described heat storage tank（4）Interior setting
There is heat transferring medium.
3. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 1 it is characterised in that：The coolant of described main refrigeration system
All crossing cold heat exchanger with the coolant of auxiliary cooling system（5）With auxiliary heat exchanger（6）Inside carry out heat exchange.
4. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 1-3 working method it is characterised in that：Described low temperature
Increasing enthalpy refrigeration system includes low-temperature heating pattern and refrigeration mode；Described low-temperature heating pattern：When outdoor environment temperature is less than
Setting value, described low-temperature enthalpy-increasing refrigeration system opens main refrigeration system and auxiliary cooling system；The work of described main refrigeration system
Mode：The coolant of High Temperature High Pressure is by main compressor（1）Flow into the first cross valve（31）Interface D, then by the first cross valve（31）
Interface C flows to heat storage tank（4）Inner condenser（41）, coolant is in condenser（41）Interior and heat storage tank（4）Interior heat transferring medium is carried out
Heat exchange, the coolant after heat release cooling is by condenser（41）Flow to the first check valve（101）, then by the first check valve（101）
Flowed to cold heat exchanger（5）Interface f, coolant is crossing cold heat exchanger（5）Interior heat release cooling, the coolant after heat release cooling is changed by supercool
Hot device（5）Interface e flows to the first reservoir（91）, then by the first reservoir（91）Flow to the first increasing enthalpy heat exchanger（71）Interface
D, coolant is in the first increasing enthalpy heat exchanger（71）By the first increasing enthalpy heat exchanger after interior heat release cooling（71）Interface c flows to the second restriction
Part（112）, the coolant after throttling is by the second throttle part（112）Flow to outdoor evaporator（8）, coolant is in outdoor evaporator
（8）By outdoor evaporator after interior suction thermal evaporation（8）Flow to auxiliary heat exchanger（6）Interface p, coolant is in auxiliary heat exchanger（6）Interior suction
After thermal evaporation, then by auxiliary heat exchanger（6）Interface q flows to the first cross valve（31）Interface E, then by the first cross valve（31）
Interface S flows to main compressor（1）；The working method of described auxiliary cooling system：The coolant of High Temperature High Pressure is by auxiliary compressor（2）
Flow into the second cross valve（32）Interface D, then by the second cross valve（32）Interface C flows to auxiliary heat exchanger（6）Interface s, coolant
In auxiliary heat exchanger（6）Interior heat release cooling, the coolant after heat release cooling is by auxiliary heat exchanger（6）Interface t flows to the second reservoir
（92）, then by the second reservoir（92）Flow to the second increasing enthalpy heat exchanger（72）Interface n, coolant is then by increasing enthalpy heat exchanger interface
M flows to the 3rd throttle part（113）, the coolant after throttling is by the 3rd throttle part（113）Flowed to cold heat exchanger（5）Interface
G, coolant is crossing cold heat exchanger（5）Interior suction thermal evaporation, after heat absorption evaporation, coolant is by cold heat exchanger excessively（5）Interface h flows to the two or four
Port valve（32）Interface E, then by the second cross valve（32）Interface S flows back to auxiliary compressor（2）；Described refrigeration mode：High temperature is high
The coolant of pressure is by main compressor（1）Flow to the first cross valve（31）Interface D, then by the first cross valve（31）Interface E flows to auxiliary
Heat exchanger（6）Interface q, coolant is then by auxiliary heat exchanger（6）Interface p flows to outdoor evaporator（8）, coolant is in outdoor evaporation
Device（8）Interior heat release cooling, the coolant after heat release cooling is by the second check valve（102）Flow to the first increasing enthalpy heat exchanger（71）Interface c,
Coolant is then by the first increasing enthalpy heat exchanger（71）Interface d flows to the first reservoir（91）, then by the first reservoir（91）Flow direction
Cross cold heat exchanger（5）Interface e, coolant is then by cold heat exchanger excessively（5）Interface f flows to first throttle part（111）, after throttling
Coolant by first throttle part（111）Flow to heat storage tank（4）Interior condenser（41）, coolant is in condenser（41）Interior and accumulation of heat
Case（4）Interior heat transferring medium carries out heat exchange, and the coolant after heat absorption evaporation is by condenser（41）Flow to the first cross valve（31）Interface
C, then by the first cross valve（31）Interface C, flows back to compressor.
5. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 4 working method it is characterised in that：In low-temperature heating
On the basis of the working method of pattern, when auxiliary cooling system heating capacity is not enough, opens the first increasing enthalpy in main refrigeration system and cut
Only valve（121）, coolant is through the first reservoir（91）Be divided into two branch road, refrigeration circuit based on a branch road, increases based on another branch road
Enthalpy stream, wherein, the coolant on main increasing enthalpy stream is by the first increasing enthalpy stop valve（121）Flow to the first increasing enthalpy throttle part（131）,
Coolant after throttling is by the first increasing enthalpy throttle part（131）Flow to the first increasing enthalpy heat exchanger（71）Interface a, on main increasing enthalpy stream
Coolant in the first increasing enthalpy heat exchanger（71）Interior suction thermal evaporation, the coolant after heat absorption evaporation is by the first increasing enthalpy heat exchanger（71）Interface
B flows back to main compressor（1）.
6. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 4 working method it is characterised in that：In low-temperature heating
On the basis of the working method of pattern, when the condenser of main refrigeration system（41）The refrigerant temperature flowing out is less than setting value, opens
The second increasing enthalpy stop valve on auxiliary increasing enthalpy stream（122）, coolant is through the second reservoir（92）After be divided into two branch road, a branch road
For assisting refrigeration circuit, another branch road is auxiliary increasing enthalpy stream, and wherein, the coolant on auxiliary increasing enthalpy stream is cut by the second increasing enthalpy
Only valve（122）Flow to the second increasing enthalpy throttle part（132）, the coolant through throttling is by the second increasing enthalpy throttle part（132）Flow to
Two increasing enthalpy heat exchangers（72）Interface i, coolant is in the second increasing enthalpy heat exchanger（72）Interior suction thermal evaporation, the coolant after heat absorption evaporation is by the
Two increasing enthalpy heat exchangers（72）Interface j flows to auxiliary compressor（2）.
7. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 6 it is characterised in that：Described auxiliary cooling system is in institute
Stated cold heat exchanger（5）The described main refrigerating system coolant of interior absorption is through heat storage tank（4）Coolant waste heat after heat release heating, thus
Reduce and flow into outdoor evaporator（8）Coolant condensation temperature, auxiliary cooling system realizes to main refrigeration system supercool function.
8. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 6 or 7 it is characterised in that：Described coolant flows into described
Outdoor evaporator（8）Front through described cross cold heat exchanger（5）Supercool first and described first increasing enthalpy heat exchanger（71）Secondary mistake
Cold, main refrigerating system coolant realizes multiple supercool function.
9. a kind of low-temperature enthalpy-increasing refrigeration system according to claim 6 it is characterised in that：Described main refrigeration system is described
Auxiliary heat exchanger（6）The made heat of the described auxiliary cooling system of interior absorption, makes main refrigerating system coolant through outdoor evaporator（8）
Still unevaporated coolant continues evaporation, and auxiliary cooling system is realized to main refrigeration system enthalpy-increasing function.
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Application publication date: 20170215 |