CN106705394A - Heat recovery system for air conditioning unit and control method of heat recovery system - Google Patents
Heat recovery system for air conditioning unit and control method of heat recovery system Download PDFInfo
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- CN106705394A CN106705394A CN201611180451.3A CN201611180451A CN106705394A CN 106705394 A CN106705394 A CN 106705394A CN 201611180451 A CN201611180451 A CN 201611180451A CN 106705394 A CN106705394 A CN 106705394A
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- temperature
- flow
- heat
- control device
- heat recovery
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- 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
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Abstract
The invention provides a heat recovery system for an air conditioning unit. The heat recovery system is characterized in that an air outlet of a compressor, a heat recovery device, a condenser, an evaporator and an admission port of the compressor are sequentially connected through pipelines to form a refrigerant loop, a heat recovery bypass is provided with a first flow control device, the heat recovery device is used for recovering heat carried by a refrigerant and realizing heat exchange between the refrigerant and water, a temperature sensor (a temperature detection device) is arranged on the heat recovery device, and the first flow control device can adjust the flow rate of a fluid flowing through the first flow control device according to temperature detected by the temperature sensor (the temperature detection device). According to the heat recovery system for the air conditioning unit, heat of the high-temperature and high-pressure refrigerant produced by compression of the compressor is recovered by the heat recovery device to be used for hot water preparation, and the heat recovery bypass connected in parallel with the heat recovery device can distribute the high-temperature and high-pressure refrigerant according to the temperature of prepared hot water, so that the temperature of the hot water prepared by use of the recovered heat is more stable.
Description
Technical field
The present invention relates to air conditioner technical field, more particularly to a kind of air-conditioner set heat recovery system and its controlling party
Method.
Background technology
In process of refrigerastion, condensation heat therein is used air-conditioner set by way of reclaiming, for example, prepare hot water
For users to use.Traditional, the high-temperature high-pressure refrigerant of air-conditioner set exchanges heat in heat reclamation device with water, in heat reclamation device
It is middle to generate hot water for users to use, but often temperature is too high or temperature is unstable for the hot water water temperature generated in heat reclamation device
Fixed, the normal of influence user is used.
The content of the invention
Based on this, it is necessary to too high for the hot water temperature of air-conditioner set heat recovery system generation or temperature is unstable asks
Topic, there is provided a kind of air-conditioner set heat recovery system and its control method.
The present invention provides a kind of air-conditioner set heat recovery system, including compressor, heat reclamation device, condenser and evaporation
Device, the air entry of the gas outlet of the compressor, heat reclamation device, condenser, evaporator and compressor passes sequentially through pipeline
Connect and compose refrigerant loop,
Wherein, the air-conditioner set heat recovery system is also bypassed including recuperation of heat, and the recuperation of heat bypass is returned with the heat
Receiving apparatus are arranged in parallel, and the recuperation of heat bypass is provided with first flow control device；
The heat reclamation device is used to reclaim the heat of refrigerant carrying, and the heat reclamation device is provided with temperature detection dress
Put；
The first flow control device can flow through its stream according to the adjustment of the detection temperature of the temperature-detecting device
The flow of body.
Wherein in one embodiment, second flow control is provided with the pipeline of the inlet communication of the heat reclamation device
Device.
Wherein in one embodiment, the air-conditioner set heat recovery system includes control mainboard, the first flow control
Device processed, the second flow control device and the temperature-detecting device are communicated to connect with the control mainboard.
Wherein in one embodiment, the bottom of the heat reclamation device is provided with liquid refrigerant outlet, the liquid system
Cryogen outlet is connected by pipeline with the entrance of the evaporator.
Wherein in one embodiment, the first flow control device include butterfly valve and magnetic valve, the butterfly valve with
And the magnetic valve is arranged in series in the recuperation of heat bypass.
Wherein in one embodiment, the heat reclamation device includes shell and tube exchanger, the shell and tube exchanger
It is respectively used to the circulation of refrigerant and water in shell side and tube side, the refrigerant is realized in shell and tube exchanger changing with water
Heat, the temperature-detecting device is arranged on the outlet pipe of the shell and tube exchanger.
Wherein in one embodiment, connected by adjusting pipeline between the water inlet pipe and outlet pipe of the heat reclamation device
It is logical, it is provided with the 3rd volume control device on the regulation pipeline.
Wherein in one embodiment, the pipeline between the compressor and the heat reclamation device is provided with oil and separates
Device.
Present invention also offers a kind of method being controlled to upper described air-conditioner set heat recovery system, wherein, institute
Control method is stated to comprise the following steps：
S100, obtains the detection temperature of the temperature-detecting device, and the detection temperature and preset temperature are compared
Compared with；
S210, when the detection temperature is higher than the preset temperature, controls the first flow control device increase stream
Through the flow of its fluid, step S100 is performed afterwards；
S220, when the detection temperature is less than the preset temperature, controls the first flow control device to reduce stream
Through the flow of its fluid, step S100 is performed afterwards.
Wherein in one embodiment, in step S210, when the detection temperature is higher than the preset temperature, also wrap
Include following steps：
S230, controls the second flow control device to reduce the flow for flowing through its fluid；
It is further comprising the steps of when the detection temperature is less than the preset temperature in step S220：
S240, controls the second flow control device increase to flow through the flow of its fluid.
Wherein in one embodiment, in step S210, when the detection temperature continues the very first time higher than described pre-
If during temperature, controlling the first flow control device increase to flow through the flow of its fluid, execution step S100, described afterwards
The very first time is 10s-60s；
In step S220, when the detection temperature continued for the second time less than the preset temperature, described the is controlled
One volume control device reduces the flow for flowing through its fluid, and step S100 is performed afterwards, and second time is 10s-60s.
Wherein in one embodiment, the preset temperature includes the first preset temperature and the second preset temperature, and first
Preset temperature is higher than the second preset temperature,
In step S210, when the detection temperature is higher than first preset temperature, the first flow control is controlled
Device increase processed flows through the flow of its fluid, and step S100 is performed afterwards；
In step S220, when the detection temperature is less than second preset temperature, the first flow control is controlled
Device processed reduces the flow for flowing through its fluid, and step S100 is performed afterwards.
Wherein in one embodiment, connected by adjusting pipeline between the water inlet pipe and outlet pipe of the heat reclamation device
It is logical, be provided with the 3rd volume control device on the regulation pipeline, the 3rd volume control device be used to controlling from it is described enter
Water pipe flows into the flow of the water in the outlet pipe；
It is further comprising the steps of when the detection temperature is higher than the preset temperature in step S210：
S250, controls the 3rd volume control device increase to flow through the flow of its fluid；
It is further comprising the steps of when the detection temperature is less than the preset temperature in step S210：
S260, controls the 3rd volume control device to reduce the flow for flowing through its fluid.
Above-mentioned air-conditioner set heat recovery system, the high-temperature high-pressure refrigerant that compressor compresses are produced is reclaimed through heat reclamation device
Heat therein is used to prepare hot water, and being arranged in parallel recuperation of heat with heat reclamation device bypasses, can be according to the hot water temperature for preparing
Degree is shunted to high-temperature high-pressure refrigerant, the water temperature of the hot water prepared using the heat for reclaiming more is stablized.
The control method of above-mentioned air-conditioner set heat recovery system, is compared using the measurement temperature for obtaining with preset temperature
Compared with according to the flow of the high-temperature high-pressure refrigerant of comparative result adjustment inflow recuperation of heat bypass such that it is able to prepared by precise control
Hot water water temperature, its temperature is more stablized, be easy to for using, improve the comfort level that user uses.
Brief description of the drawings
In order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only described in the present invention
A little embodiments, for those of ordinary skill in the art, can also obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is air-conditioner set heat recovery system preferred embodiment structural representation of the present invention；
Fig. 2 is its control method preferred embodiment FB(flow block) of air-conditioner set heat recovery system；
Fig. 3 is air-conditioner set heat recovery system another preferred embodiment FB(flow block) of its control method.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and with reference to attached
Figure, is further elaborated to air-conditioner set heat recovery system of the invention and its control method.It should be appreciated that this place
The specific embodiment of description is only used to explain the present invention, is not intended to limit the present invention.
Refer to shown in Fig. 1, air-conditioner set heat recovery system of the invention includes that compressor 10, oil eliminator 20, heat are returned
Receiving apparatus 30, condenser and evaporator 60, wherein, it is the gas outlet of compressor 10, oil eliminator 20, heat reclamation device 30, cold
The air entry of condenser, evaporator 60 and compressor 10 passes sequentially through pipeline and connects and composes refrigerant loop.
Wherein, condenser is used for the condensation of refrigerant, for example, can be fin condenser.Preferably, condenser also includes
Blower fan, blower fan is due to fin condenser wind-cooling heat dissipating.Condenser includes that the first condenser 51 and second is cold in the present embodiment
Condenser 52, the first condenser 51 and the second condenser 52 can be according to its work shapes of the status adjustment of the refrigerant flowed through in it
State.For example, when flowing through the refrigerant temperature in it and being higher, increasing the rotating speed of blower fan.And for example, when flowing through the refrigerant temperature in it
When spending relatively low, the rotating speed of blower fan can be reduced or the second condenser 52 is closed, the refrigerant of refrigerant loop is only passed through first
Condenser 51 carries out condensation radiating.
Used as a kind of optional embodiment, condenser can be disposed in the outdoor the heat exchanger in machine for air-conditioner set, system
Cryogen condenses radiating in condenser.
Used as a kind of optional embodiment, evaporator 60 can be disposed in the interior the heat exchanger of machine for air-conditioner set, system
Cryogen evaporation endothermic in evaporator 60, reduces indoor temperature.
Wherein, heat reclamation device 30 can be shell and tube exchanger, or other can realize refrigerant carry
The device of heat recovery, the heat exchanger and water condenser being for example arranged in parallel, in the present invention by taking shell and tube exchanger as an example in detail
The working condition of description air-conditioner set heat recovery system of the present invention, it is specific real when the heat reclamation device 30 using other structures
Apply process similar to shell and tube exchanger, do not repeating herein.
Shell and tube exchanger is to close the wall restrained in the housing as the dividing wall type heat exchanger of heat-transfer area, heat exchange effect
Rate is high.Shell and tube exchanger is provided with refrigerant inlet, refrigerant outlet, water inlet pipe 31 and outlet pipe 32, shell and tube exchanger
Refrigerant inlet be connected by pipeline with oil eliminator 20；The refrigerant outlet of shell and tube exchanger passes through pipeline with condenser
Connection；The water inlet pipe 31 of shell and tube exchanger is connected with water source, for example, be connected with running water pipe, or connected with storage tank
Connect；The outlet pipe 32 of shell and tube exchanger is connected with storage tank, it is also possible to be directly connected with water pipe.
When the water inlet pipe 31 and outlet pipe 32 of shell and tube exchanger are connected with storage tank, storage tank also connects with water source
Logical, the water in storage tank circulate between shell and tube exchanger and storage tank, the water temperature in maintenance storage tank in preset temperature, when
After user is using the hot water in storage tank, cold water is filled into by water source, circulating chilled water enter shell and tube exchanger be heated to it is default
Temperature is for users to use.
Temperature-detecting device is provided with shell and tube exchanger outlet pipe 32, temperature-detecting device is used to detect that shell-tube type exchanges heat
The temperature of the water at device outlet pipe 32.Preferably, temperature-detecting device can be temperature sensor, and temperature sensor can be experienced
Temperature is simultaneously converted into usable output signal, in the present embodiment using temperature-sensitive bag as temperature-detecting device.
Air-conditioner set heat recovery system is additionally provided with recuperation of heat bypass, and recuperation of heat bypass is arranged in parallel with shell and tube exchanger.
The first end and the pipeline communication between the refrigerant inlet and oil eliminator 20 of shell and tube exchanger of recuperation of heat bypass, recuperation of heat
Second end of bypass and the pipeline communication between the refrigerant outlet and condenser of shell and tube exchanger, set in recuperation of heat bypass
First flow control device is equipped with, first flow control device can not only control the refrigerant flow for flowing through recuperation of heat bypass big
It is small, moreover it is possible to which that control flows through the refrigerant break-make of recuperation of heat bypass, by controlling refrigerant flow size and break-make, can be accurate
The amount of the refrigerant in heat reclamation device is flowed through, precise control is reached and is reclaimed the heat that refrigerant is carried using heat reclamation device
The efficiency and heat amount of amount.When using shell and tube exchanger etc. as heat reclamation device 30, often due to shell-tube type is changed
The water temperature over-high that the heat transfer effect of hot device is very good and prepares, influences the use of user, now can be by adjusting first flow control
Device, is made the refrigerant of a part of HTHP be bypassed by recuperation of heat and is circulated in refrigerant loop, it is to avoid shell-tube type exchanges heat
The hot water water temperature over-high prepared in device.
As a kind of optional embodiment, it is connected with recuperation of heat bypass first end in the refrigerant inlet of shell and tube exchanger
Pipeline between point is provided with second flow control device 34.
Water inlet pipe is provided with water inlet pipe and outlet pipe as a kind of optional embodiment heat reclamation device, and water inlet pipe is arranged on
On water inlet pipe, outlet pipe is arranged on outlet pipe, in water inlet pipe and outlet pipe by adjusting pipeline communication, is set on regulation pipeline
There is the 3rd volume control device 33, the 3rd volume control device 33 can control the stream of the water entered in outlet pipe from water inlet pipe 31
Amount.
Wherein first flow control device, the volume control device 33 of second flow control device 34 and the 3rd are to control
The device of the flow of refrigerant or water in tubing giving sufficient strength, for example, can be the volume control devices such as magnetic valve, butterfly valve.
Used as a kind of optional embodiment, air-conditioner set heat recovery system includes control mainboard (not shown), first
Volume control device, second flow control device 34, the 3rd volume control device 33 and the temperature-detecting device and control
Mainboard is communicated to connect.Data control first flow control device, second that control mainboard can be detected according to temperature-detecting device
Amount control device and the 3rd volume control device 33, to change the cold-producing medium stream for flowing through that shell and tube exchanger or recuperation of heat are bypassed
Amount or change flow through the flow of the water of shell and tube exchanger such that it is able to be accurately controlled in recovery heat system in shell and tube exchanger
The temperature of standby hot water.
Used as a kind of optional embodiment, first flow control device includes butterfly valve 42 and magnetic valve 41, butterfly valve 42 with
Magnetic valve 41 coordinates jointly, can realize that high-precision control flows through the purpose of the flow of the refrigerant of recuperation of heat bypass.
As a kind of optional embodiment, liquid refrigerant outlet, liquid refrigeration are provided with the bottom of heat reclamation device 30
Agent outlet passes through the pipeline communication between pipeline and condenser and evaporator 60, for the liquid that will accumulate in heat reclamation device 30
State refrigerant is back in evaporator 60, it is to avoid liquid refrigerant accumulates excessively in heat reclamation device 30, and influence refrigerant is returned
The circulation on road.For example, when heat reclamation device 30 is shell and tube exchanger, liquid refrigeration is provided with the bottom of shell and tube exchanger
Agent is exported, and the shell side or tube side of cold-producing medium stream warp are connected with refrigerant outlet in case tube heat exchanger, the liquid system for being formed wherein
Cryogen can be transported in evaporator 60 by liquid refrigerant outlet.
As a kind of optional embodiment, liquid refrigerant outlet can also by pipeline directly with the entrance of evaporator 60
Connection.
When air-conditioner set heat recovery system is run, the refrigerant of refrigerant loop generates high temperature in compressor 10 by compression
Higher pressure refrigerant gas, high-temperature high-pressure refrigerant gas enters oil eliminator 20, and Oil-gas Separation is carried out in oil eliminator 20, removes
The high-temperature high-pressure refrigerant gas of the refrigeration oil for wherein carrying is gone to bypass into condensation by heat reclamation device 30, recuperation of heat respectively
Condensed in device, absorbing and cooling temperature is carried out to air into evaporator 60 afterwards, in returning to compressor 10 afterwards.
Wherein, high-temperature high-pressure refrigerant gas carries out heating and prepares hot water in heat reclamation device 30 to water therein, and
Hot water temperature prepared by the refrigerant flow control bypassed by regulating and controlling to flow into recuperation of heat.The bottom of heat reclamation device 30 may collect deposits
Refrigerant liquid refrigerant loop entered by the liquid refrigerant outlet of bottom collect,
Refer to shown in Fig. 2, present invention also offers the control method to air-conditioner set heat recovery system, the control method
Comprise the following steps：
S100, obtains the detection temperature of temperature-detecting device, and detection temperature is compared with preset temperature；
S210, when detection temperature is higher than preset temperature, the control device increase of control first flow flows through its fluid
Flow, performs step S100 afterwards；Wherein, control first flow device increase flows through the flow of its fluid including by first
Volume control device connects recuperation of heat bypass, and the feelings that fluid is bypassed by recuperation of heat are switched to by recuperation of heat from without fluid
Condition.
S220, when detection temperature is less than preset temperature, the control device reduction of control first flow flows through its fluid
Flow, performs step S100 afterwards.Wherein, control first flow device increase flows through the flow of its fluid including by first
Volume control device disconnects recuperation of heat bypass, and the feelings bypassed by recuperation of heat without fluid are switched to by recuperation of heat from there is fluid
Condition.
Wherein, first flow control device preferably includes butterfly valve 42 and magnetic valve 41, and butterfly valve 42 is connected with magnetic valve 41
It is arranged in recuperation of heat bypass, can realizes that high-precision control flows through the purpose of the flow of the refrigerant of recuperation of heat bypass.
It is further comprising the steps of when detection temperature is higher than preset temperature as a kind of optional embodiment：
S230, control second flow control device 34 reduces the flow for flowing through its fluid；
It is further comprising the steps of when detection temperature is less than preset temperature：
S240, the increase of control second flow control device 34 flows through the flow of its fluid.
It is higher than preset temperature when detection temperature continues the very first time in step S210 as a kind of optional embodiment
When, control first flow control device increase flows through the flow of its fluid, and step S100 is performed afterwards, and the very first time can be
10s-60s；
In step S220, when detection temperature continued for the second time less than preset temperature, control first flow control dress
The flow for reducing and flowing through its fluid is put, step S100 is performed afterwards, the second time can be 10s-60s.
Used as a kind of optional embodiment, the water inlet pipe of heat reclamation device, by adjusting pipeline communication, is adjusted with outlet pipe
The 3rd volume control device 33 is provided with pipeline, the 3rd volume control device 33 is used to control to flow into the water outlet from water inlet pipe
The flow of the water in pipe；
It is further comprising the steps of when detection temperature is higher than the preset temperature in step S210：
S250, control the 3rd volume control device 33 increases the flow for flowing through its fluid；
It is further comprising the steps of when detection temperature is less than the preset temperature in step S210：
S260, control the 3rd volume control device 33 reduces the flow for flowing through its fluid.
Used as a kind of optional embodiment, preset temperature includes the first preset temperature and the second preset temperature, and first pre-
If temperature is higher than the second preset temperature.The difference of the first preset temperature and the second preset temperature embodies heat recovery system control method
Accuracy and the tolerable temperature approach of user, its difference is smaller, and accuracy is higher.Preferably, the first preset temperature is subtracted
Second preset temperature is less than or equal to 5 DEG C.
In step S210, when detection temperature is higher than the first preset temperature, control first flow control device increase stream
Through the flow of its fluid, step S100 is performed afterwards；
In step S220, when detection temperature is less than the first preset temperature, control first flow control device reduces stream
Through the flow of its fluid, step S100 is performed afterwards.
When air-conditioner set runs, control mainboard obtains water at the outlet pipe 32 of heat reclamation device 30 of temperature-detecting device detection
The detection temperature of temperature, and detection temperature is compared with preset temperature, control mainboard is according to the corresponding dress of comparative result control
Put action.
Can be that detection temperature performs step S210 immediately higher than preset temperature when detection temperature is higher than preset temperature,
Can be detection temperature higher than the temperature value of preset temperature first, e.g. detection temperature higher than 1 DEG C of preset temperature when perform step
S210。
Can be that detection temperature performs step S220 immediately less than preset temperature when detection temperature is less than preset temperature,
Can be detection temperature less than preset temperature second temperature value, e.g. detection temperature less than 0.5 DEG C of preset temperature when perform step
Rapid S220.
It is higher than preset temperature when detection temperature is higher than preset temperature, or when detection temperature continues the very first time
When, perform step S210 control first flow control device increases and flow through the flow of its fluid, or perform step S230 controls
Second flow control device 34 reduces the flow for flowing through its fluid, or performs step S250 the 3rd volume control devices 33 of control
Increase flows through the flow of its fluid, it is also possible to while performing step S210, S230 and S250, i.e., control first flow simultaneously
Any two or whole while carrying out phase in control device, the volume control device 33 of second flow control device 34 and the 3rd
The action answered, realizes the precise control of temperature.
When detection temperature is less than preset temperature, or when detection temperature continued for the second time less than preset temperature,
Perform step S220 control first flow control devices and reduce the flow for flowing through its fluid, or perform step S240 controls second
Volume control device 34 increases the flow for flowing through its fluid, or execution step S260 controls the 3rd volume control device 33 to increase
Flow through the flow of its fluid, it is also possible to while performing step S220, S240 and S260, i.e., control first flow control simultaneously
Any two or whole while carrying out corresponding in device, the volume control device 33 of second flow control device 34 and the 3rd
Action, realizes the precise control of temperature.
Preset temperature is preferably 40 DEG C -50 DEG C, for example, when preset temperature is 32 DEG C, when the sense as temperature-detecting device
When thermometer bulb detection temperature is 34 DEG C, control mainboard part obtains detection temperature and is compared with preset temperature, and comparative result is inspection
Testing temperature is higher than preset temperature, and control mainboard is to send "ON" signal, butterfly valve to the butterfly valve 42 as first flow control device
42 open a big step number according to minimum step number；Control mainboard obtains detection temperature and is compared with preset temperature again, so
Circulation.
In the present description, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying
Relative importance.
Meanwhile, in this specification it is cited such as " on ", D score, " bottom ", the term of " top " and " ", be merely convenient to
Narration understands, and be not used to limit enforceable scope of the invention, and its relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as enforceable category of the invention.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (13)
1. a kind of air-conditioner set heat recovery system, including compressor (10), heat reclamation device (30), condenser and evaporator
(60), the gas outlet of the compressor (10), heat reclamation device (30), condenser, evaporator (60) and compressor (10)
Air entry passes sequentially through pipeline and connects and composes refrigerant loop,
Characterized in that, the air-conditioner set heat recovery system is also bypassed including recuperation of heat, the recuperation of heat is bypassed and the heat
Retracting device (30) is arranged in parallel, and the recuperation of heat bypass is provided with first flow control device；
The heat reclamation device (30) is provided with temperature inspection for reclaiming the heat that refrigerant is carried, the heat reclamation device (30)
Survey device；
The first flow control device can flow through its fluid according to the adjustment of the detection temperature of the temperature-detecting device
Flow.
2. air-conditioner set heat recovery system according to claim 1, it is characterised in that with the heat reclamation device (30)
The pipeline of inlet communication is provided with second flow control device (34).
3. air-conditioner set heat recovery system according to claim 2, it is characterised in that the air-conditioner set heat recovery system
Including control mainboard, the first flow control device, the second flow control device (34) and the temperature detection dress
Put and communicated to connect with the control mainboard.
4. air-conditioner set heat recovery system according to claim 2, it is characterised in that the bottom of the heat reclamation device (30)
Portion is provided with liquid refrigerant outlet, and the liquid refrigerant outlet is connected by pipeline with the entrance of the evaporator (60).
5. air-conditioner set heat recovery system according to claim 2, it is characterised in that the first flow control device bag
Butterfly valve (42) and magnetic valve (41) are included, the butterfly valve (42) and the magnetic valve (41) are arranged in series in by the recuperation of heat
Lu Zhong.
6. air-conditioner set heat recovery system according to claim 2, it is characterised in that the heat reclamation device (30) includes
Shell and tube exchanger, is respectively used to the circulation of refrigerant and water in the shell side and tube side of the shell and tube exchanger, described
Refrigerant realizes heat exchange with water in shell and tube exchanger, and the temperature-detecting device is arranged on going out for the shell and tube exchanger
On water pipe (32).
7. air-conditioner set heat recovery system according to claim 2, it is characterised in that the water inlet pipe of the heat reclamation device
By adjusting pipeline communication between outlet pipe, the 3rd volume control device (33) is provided with the regulation pipeline.
8. air-conditioner set heat recovery system according to claim 2, it is characterised in that the compressor (10) and the heat
Pipeline between retracting device (30) is provided with oil eliminator (20).
9. a kind of method that air-conditioner set heat recovery system to described in claim 3 to 8 any one is controlled, its feature
It is that the control method is comprised the following steps：
S100, obtains the detection temperature of the temperature-detecting device, and the detection temperature and preset temperature are compared；
S210, when the detection temperature is higher than the preset temperature, controls the first flow control device increase to flow through it
Fluid flow, step S100 is performed afterwards；
S220, when the detection temperature is less than the preset temperature, controls the first flow control device to reduce and flows through it
Fluid flow, step S100 is performed afterwards.
10. control method according to claim 9, it is characterised in that in step S210, when the detection temperature is higher than
It is further comprising the steps of during the preset temperature：
S230, controls the second flow control device (34) to reduce the flow for flowing through its fluid；
It is further comprising the steps of when the detection temperature is less than the preset temperature in step S220：
S240, controls second flow control device (34) increase to flow through the flow of its fluid.
11. control methods according to claim 9, it is characterised in that in step S210, when the detection temperature continues
When the very first time is higher than the preset temperature, the first flow control device increase is controlled to flow through the flow of its fluid, it
Step S100 is performed afterwards, and the very first time is 10s-60s；
In step S220, when the detection temperature continued for the second time less than the preset temperature, control described first-class
Amount control device reduces the flow for flowing through its fluid, and step S100 is performed afterwards, and second time is 10s-60s.
12. control methods according to claim 9, it is characterised in that the preset temperature include the first preset temperature and
Second preset temperature, and first preset temperature is higher than second preset temperature,
In step S210, when the detection temperature is higher than first preset temperature, the first flow control dress is controlled
The flow that increase flows through its fluid is put, step S100 is performed afterwards；
In step S220, when the detection temperature is less than second preset temperature, the first flow control dress is controlled
The flow for reducing and flowing through its fluid is put, step S100 is performed afterwards.
13. control method according to claim 9 to 12 any one, it is characterised in that the heat reclamation device (30)
Water inlet pipe and outlet pipe between by adjusting pipeline communication, be provided with the 3rd volume control device on the regulation pipeline
(33), the 3rd volume control device (33) is for controlling the flow from the water in the water inlet pipe inflow outlet pipe；
It is further comprising the steps of when the detection temperature is higher than the preset temperature in step S210：
S250, controls the 3rd volume control device (33) increase to flow through the flow of its fluid；
It is further comprising the steps of when the detection temperature is less than the preset temperature in step S210：
S260, controls the 3rd volume control device (33) to reduce the flow for flowing through its fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180451.3A CN106705394A (en) | 2016-12-19 | 2016-12-19 | Heat recovery system for air conditioning unit and control method of heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180451.3A CN106705394A (en) | 2016-12-19 | 2016-12-19 | Heat recovery system for air conditioning unit and control method of heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106705394A true CN106705394A (en) | 2017-05-24 |
Family
ID=58938087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611180451.3A Pending CN106705394A (en) | 2016-12-19 | 2016-12-19 | Heat recovery system for air conditioning unit and control method of heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705394A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033182A (en) * | 2020-08-26 | 2020-12-04 | 珠海格力电器股份有限公司 | Shell and tube heat exchanger, unit with heat recovery function and heat recovery control method |
| CN112797607A (en) * | 2021-01-04 | 2021-05-14 | 珠海格力电器股份有限公司 | Heat recovery system, control method and air conditioning unit |
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| CN102914107A (en) * | 2011-08-04 | 2013-02-06 | 特灵空调系统(中国)有限公司 | Heat energy recovery control method for refrigeration system |
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| JPH03125856A (en) * | 1989-10-11 | 1991-05-29 | Matsushita Electric Ind Co Ltd | Heat pump hot water feeder |
| CN102829570A (en) * | 2011-06-15 | 2012-12-19 | 李思模 | Variable-frequency dual-compressor heat pump |
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| CN112033182A (en) * | 2020-08-26 | 2020-12-04 | 珠海格力电器股份有限公司 | Shell and tube heat exchanger, unit with heat recovery function and heat recovery control method |
| CN112797607A (en) * | 2021-01-04 | 2021-05-14 | 珠海格力电器股份有限公司 | Heat recovery system, control method and air conditioning unit |
| CN112797607B (en) * | 2021-01-04 | 2023-02-24 | 珠海格力电器股份有限公司 | Heat recovery system, control method and air conditioning unit |
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