CN1523301A - Heat pump type hot water supply system with cooling function - Google Patents
Heat pump type hot water supply system with cooling function Download PDFInfo
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- CN1523301A CN1523301A CNA2004100054991A CN200410005499A CN1523301A CN 1523301 A CN1523301 A CN 1523301A CN A2004100054991 A CNA2004100054991 A CN A2004100054991A CN 200410005499 A CN200410005499 A CN 200410005499A CN 1523301 A CN1523301 A CN 1523301A
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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
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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
- 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
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
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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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/047—Water-cooled condensers
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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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0012—Ejectors with the cooled primary flow at high pressure
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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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/001—Ejectors not being used as compression device
- F25B2341/0013—Ejector control arrangements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
This heat pump type hot water supply apparatus with a cooling function is provided with a second refrigerant circuit R2 branched downstream of a high pressure refrigerant passage 2a to pass through a second expansion valve 4b and a low pressure refrigerant passage 9a of a brine cooling heat exchanger 9 and to join upstream of a refrigerant compressor 1 to be in parallel with a first refrigerant circuit R1, and a cold brine circuit B1 annularly connecting a brine passage 9b of the brine cooling heat exchanger 9, a cold brine circulating pump 8 and a terminal heat exchanger 10. A refrigerant is allowed to flow through the low pressure refrigerant passage 9a, and the cold brine circulating pump 8 is operated to exchange heat between the refrigerant of low temperature and low pressure flowing through the low pressure refrigerant passage 9a, and brine flowing through the brine passage 9b to cool the brine. Hot water supply and cooling can thereby be performed by one simple refrigerating cycle apparatus with a heat source integrated. Moreover, since waste cold heat is used, energy saving can be attained, and an apparatus cost and a running cost can be suppressed low.
Description
Technical field
The present invention relates to a kind ofly have hot water supply function and cooling, freezing, refrigeration simultaneously and every the heat pump type hot water supply system of cold function.
Background technology
In the prior art, the used heat of heat pump type hot water supply system is not just reused and is discharged in the air.On the other hand, traditional cooling or freezing/refrigeration system but often dispose a special-purpose cooling/cold storage plant.
According to above-mentioned conventional art, hot water supply function and cooling or freezing/refrigerating function all require independent cooling cycle system, thereby have brought equipment cost and the high problem of operating cost.
Summary of the invention
Therefore, one object of the present invention is to overcome above-mentioned prior art problems, and a kind of heat pump type hot water supply system with refrigerating function is provided, and wherein single cooling cycle system can be realized hot-water supply and cooling or freezing/cold storage function simultaneously.
According to first kind mode of the present invention, a kind of heat pump type hot water supply system with refrigerating function is provided, comprising:
One first refrigerant loop (R1);
One second refrigerant loop (R2), this loop comprises the low pressure refrigerant path (9a) of the second puffing device (4b) and brine-cooled heat exchanger (9), this loop in the downstream of high-pressure refrigerant path (2a) from first refrigerant loop (R1) branch, with first refrigerant loop (R1) parallel running, and converge in the upstream of coolant compressor (1) with described first refrigerant loop (R1);
A brine loop (B), it comprises salt water passage (9b), cool brine circulating pump (8) and the terminal heat exchanger (10) of the brine-cooled heat exchanger (9) that ring-type connects; With
Article one, be used for the high-pressure refrigerant path (13a) of the high-pressure refrigerant process by water heat exchanger (2) and one and be used for low pressure refrigerant path (13b) by the low pressure refrigerant process of air heat exchanger (5) or brine-cooled heat exchanger (9);
Wherein: cold-producing medium flows through second refrigerant loop (R2) and cool brine circulating pump (8) startup, heat just exchanges between the salt solution of low temperature, the low pressure refrigerant of low pressure refrigerant path (9a) that flow through and salt water passage (9b) that flow through like this, thus refrigerated brine.
System further comprises cold-producing medium heat radiation heat exchanger (13), and it is used for flowing through the low pressure refrigerant of low pressure refrigerant path (13b) from the high-pressure refrigerant radiations heat energy of the high-pressure refrigerant path (13a) of flowing through by heating.
In this form of the present invention, the inventor pays special attention to utilize the used heat of heat pump type hot water supply system to come refrigerated brine, and uses the salt solution of so cooling to realize cooling or freezing/refrigeration.Therefore, use to have the single simple kind of refrigeration cycle of unified thermal source, can realize hot water supply and cooling or freezing/refrigeration operation simultaneously on the one hand; The conserve energy by utilizing these used heat on the other hand.In addition, also can reduce equipment cost and operation expense.
As long as water does not heat with hot-water supply (hot non-radiating), salt solution just can not be cooled (heat can not be absorbed), just can not guarantee stable refrigerating function.But,, also can guarantee the heat radiation operation even water does not need heating with hot-water supply according to the present invention.Therefore, whenever, can realize stable refrigerating function.This structure has also improved the extraction pressure of coolant compressor (1), thereby helps improving energy-saving effect.
The second way according to invention provides a kind of heat pump type hot water supply system with refrigerating function, comprising:
A gas-liquid separator (55) is used for the cold-producing medium of refrigerant loop (R) is divided into gas part and liquid part, and gaseous refrigerant is delivered to coolant compressor (1); And
An injector (14) comprising:
A nozzle (14a), the instead a kind of decompression and the expansion gear of the first puffing device (4a) and the second puffing device (4b), the compression of the high-pressure refrigerant of the compressed and water heat exchanger of flowing through (2) can just be converted into the speed energy in coolant compressor (1) like this, thereby cold-producing medium is reduced pressure and expands; With
A supercharging part (14c, 14d): by it, the quick refrigerant stream that utilization is ejected from nozzle (14a), being connected in the brine-cooled heat exchanger (9) of low-pressure side or the gaseous refrigerant of the middle evaporation of air heat exchanger (5) just is extracted, and the cold-producing medium that is extracted mixes with the cold-producing medium that nozzle (14a) ejects, and speed can just be converted into pressure energy simultaneously, thereby compression flows into the cold-producing medium of gas-liquid separator (55).
This mode has been simplified the cold-producing medium loop structure, and compares with the situation of using expansion valve, and the energy recovering effect of injector (14) has improved about 20% with rate of heat exchange (COP).
In this form of the present invention, system further comprises a variable restriction or throttling arrangement (14e), and its extent of opening is limited by control in the upstream of this device nozzle (14a) in cryogen, and the pressure of control high-pressure refrigerant.Like this, just can assurance obtain refrigerated brine and different optimal evaporation pressure from the absorption of air heat.
In this form of the present invention, the cold-producing medium of the refrigerant loop of flowing through (R) is carbon dioxide (CO
2).This be because: from the carbon dioxide (CO of cold-producing medium compressor (1)
2) the high outlet pressure of cold-producing medium, realize the work effect of injector (14) easily.
In this form of the present invention, the refrigerating box (15) of storage refrigerated brine is arranged on the downstream of brine-cooled heat exchanger (10) in the middle salt solution in cool brine loop (B1), and wherein cool brine loop (B1) comprises salt water passage (9b), cool brine circulating pump (8) and the terminal heat exchanger (10) of the brine-cooled heat exchanger (9) that ring-type connects.Therefore, even during the brine-cooled operation suspension in brine-cooled heat exchanger (9), also can continue to be cooled in the inside of terminal (11).
In this form of the present invention, cool brine loop (B1) comprising: the bypass circulation (B3) of walking around terminal heat exchanger (10); With follow loop switching device shifter (20,21), be used for switching between the heat exchanger (10) and bypass circulation (B3) endways the salt solution circulation.Even terminal heat exchanger (10) is not when needing to cool off, also operation can be switched to bypass circulation (B3) and refrigerated brine, be implemented in refrigerating box (15) storage operation refrigerated brine, that be called refrigeration.
The third mode according to invention, a kind of heat pump type hot water supply system with refrigerating function is provided, comprise: a salt solution heating circuit (K2), it comprises a high-temperature water path (16a) and a high-temperature water circulating pump (17) that is linked to be a ring-like boiler (7), a salt solution reheat heat exchanger (16); An and hot salt brine loop (B2), it comprises the salt water passage (16b) of a ring-like salt solution reheat heat exchanger (16) that is linked to be, a hot salt brine circulating pump (18) and a terminal heat exchanger (10) that is arranged in the end (11), wherein: start high-temperature water circulating pump (17) and hot salt brine circulating pump (18), exchange between the mobile salt solution in the high-temperature water that just in high-temperature water path (16a), flows of heat and the salt water passage (16b) like this, and add hot salt brine, and the salt solution through heating is fed to terminal heat exchanger (10) thereby heating and the hot inside that isolates end (11) simultaneously.
In this form of the present invention, be different from the above-mentioned form that the present invention has refrigerating function end (11), added and be used to add hot salt brine reheat heat exchanger (16) mesohalobic hot salt brine loop (B2), and through the salt solution of heating be imported into cooling procedure in the terminal heat exchanger (10) in the identical end (11).By this way, the inside of terminal (11) is through heating or heat storage and be heated/heat isolates, thereby constitutes and require the consistent configuration of cooling function end (11).
In this form of the present invention, salt solution heating circuit (K2) comprises a high temperature hydro-thermal-radiation heat exchanger (23).The cold-producing medium heat radiation heat exchanger (13) of replacement a kind of form according to the present invention, high temperature hydro-thermal-radiation heat exchanger (23) is arranged in the salt solution heating circuit (K2).High temperature hydro-thermal-radiation heat exchanger (23) is used for by the radiations heat energy with the heat exchange of extraneous air, and by under the situation of closing hot salt brine circulating pump (18), operation high-temperature water circulating pump (17) can be realized the heat radiation operation.
Even do not need the water heating with hot-water supply, in the circulation and heat hot-water supply water that keep between refrigerant loop (R), hot water supply water heating circuit (K) and the salt solution heating circuit (K2), also can guarantee from the heat radiation of high temperature hydro-thermal-radiation heat exchanger (23).Therefore, whenever can stably realize refrigerating function.
In this form of the present invention, hot storing apparatus or heat storage part (24) are arranged on each terminal heat exchanger (10) on every side.Therefore, even be prevented from through cooling or the circulation of the salt solution through heating, also can continue to be cooled or to heat in the inside of terminal (11).
In this form of the present invention, many terminal heat exchangers (10) are parallel to cool brine loop (B1) or hot salt brine loop (B2).By this way, can increase or reduce the number of the end (11) of terminal heat exchanger (10) and the terminal heat exchanger of use (10) easily.
In this form of the present invention, terminal heat exchanger (10) many and that connect is connected with the flow control device that is used to control brine stream (20a is to 20c) respectively.Therefore, just can control the duty of each terminal heat exchanger (10a is to 10c) independently.Label in the round parentheses behind the said apparatus is pointed out the example of respective specific device among the following embodiment.
With reference to accompanying drawing,, can more fully understand the present invention by description to the following preferred embodiment of the present invention.
Description of drawings
Fig. 1 is the structural representation according to the heat pump type hot water supply system with refrigerating function of first embodiment of the invention;
Fig. 2 is the structural representation according to the heat pump type hot water supply system with refrigerating function of second embodiment of the invention;
Fig. 3 is the structural representation of the heat pump type hot water supply system with refrigerating function of a third embodiment in accordance with the invention;
Fig. 4 is the cutaway view of signal demonstration according to the emitter construction of third embodiment of the invention;
Fig. 5 is the structural representation according to the heat pump type hot water supply system with refrigerating function of fourth embodiment of the invention;
Fig. 6 is the structural representation according to the heat pump type hot water supply system with refrigerating function of fifth embodiment of the invention;
Fig. 7 is the structural representation according to the heat pump type hot water supply system with refrigerating function of sixth embodiment of the invention.
The specific embodiment
(first embodiment)
Below, one embodiment of the present of invention are described with reference to the accompanying drawings.Fig. 1 is the configuration schematic diagram of the heat pump type hot water supply system with refrigerating function of first kind of embodiment according to the present invention, and wherein water is heated with hot-water supply, and salt solution is cooled simultaneously.In heat pump type hot water supply system with refrigerating function according to current embodiment, use postcritical heat pump cycle, water is heated to a certain high temperature (in current embodiment about 90 ℃), utilize following brine-cooled heat exchanger 9 simultaneously, as the salt solution or the analogue such as antifreezing agent solution of heat exchange medium, be cooled to a certain low temperature (in current embodiment, making an appointment with-10 ℃).By this way, salt solution is used to cool off a certain space or end 11, for example refrigerator, freezer unit or wine cellar.
Overcritical heat pump cycle (hereinafter referred to as heat pump) is defined as and uses carbon dioxide, ethene, ethane or the nitrogen oxide heat pump cycle as cold-producing medium, and wherein the pressure of cold-producing medium is not less than critical pressure.
Building block with heat pump type hot water supply system of refrigerating function can roughly be divided into: the kind of refrigeration cycle unit that comprises or hold following refrigerating circulatory device; Comprise or hold the box unit of following boiler 7; And end or end or terminal 11.On the other hand, inside, kind of refrigeration cycle unit is divided into roughly: refrigerant loop R (as heat pump cycle); The water heating circuit K that is used for hot-water supply; And the brine loop B that is used for end.
The refrigerant loop R of heat pump cycle, the coolant compressor 1, one that comprises the compressed refrigerant that ring-type connects to the water heating with the water heat exchanger 2 of hot-water supply, formation the first expansion valve 4a and air heat exchanger 5 that absorbs the air heat as first decompressor of the first refrigerant loop R1; And gas-liquid separator 55 that cold-producing medium is divided into gas and liquid part.The lower carbon dioxide of critical-temperature is (hereinafter referred to as CO
2) as cold-producing medium.
Coolant compressor 1 disposes: a built-in CD-ROM drive motor; With a high pressure compressed unit, it is increased to the pressure of extraction gaseous refrigerant and is not less than critical pressure, and the discharging pressurize refrigerant.These parts are installed in the airtight container.Compressor 1 can be any Reciprocatory, rotary-type or spiral or Scrawl compressor.Also can use the driving compressor of engine.
By heat-shift between water and high temperature, high-pressure gaseous refrigerant (the high pressure compressed unit by coolant compressor 1 increases pressure), water heat exchanger 2 heat hot water supply water.Hot water supply water passage 2b and the adjacent setting of high-pressure refrigerant path 2a, adjacent mode is: it is opposite that the cold-producing medium among the high-pressure refrigerant path 2a and the hot water among the path 2b are supplied the mobile direction of water.
The first expansion valve 4a is arranged between water heat exchanger 2 and the air heat exchanger 5.Utilize the first expansion valve 4a, the cold-producing medium that is cooled off by water heat exchanger 2 is reduced to low-pressure state from high pressure conditions, and is supplied to air heat exchanger 5.The configuration of the first expansion valve 4a is as follows: its valve openings is that electricity is adjustable and automatically controlled by following control module 12.In air heat exchanger 5, by utilizing fan (not shown) supply air, by with the atmosphere heat-shift, make cold-producing medium evaporation through first expansion valve 4a decompression.The solution-air cold-producing medium that flows out from air heat exchanger 5 is sent to gas-liquid separator 55, and is divided into gaseous refrigerant and liquid refrigerant two parts.Liquid refrigerant is stored, and gaseous refrigerant can be inhaled into before liquid refrigerant in the coolant compressor 1.
The water heating circuit K of hot-water supply comprises the hot water water supply path 2b of the water heat exchanger 2 of a heat hot water supply water that is linked to be the loop, a hot water water supply circulating pump 6 and the hot water storing box 7 that storage hot water supplies water.As shown in Figure 1, by hot water water supply circulating pump 6, the cold water that the cooling water outlet 7a of boiler 7 bottoms flows out is supplied to the hot water water supply path 2b of water heat exchanger 2, and the current that produce are from the hot water outlet 7b outflow on boiler 7 tops.This hot water water supply circulating pump 6 can be adjusted the speed or the flow of current according to the rotating speed of built-in motor (not shown).
Next, the configuration of the basic element of character of the present invention will be explained.At first, the second refrigerant loop R2 comprises the second puffing valve 4b and the brine-cooled heat exchanger 9 that constitutes second decompressor, this loop is from the downstream branch of the first refrigerant loop R1 at the high-pressure refrigerant path 2a of water heat exchanger 2, with the first refrigerant loop R1 parallel running, and converge in the upstream (upstream of gas-liquid separator 55) of coolant compressor 1 with the first refrigerant loop R1.The first refrigerant loop R1 and the second refrigerant loop R2 have the first on-off valve 3a and the second on-off valve 3b respectively, as the switching device shifter of refrigerant loop.These valves are automatically controlled by following control module 12.Just can switch in flowing between the first refrigerant loop R1 and the second refrigerant loop R2 by switching its open/close state like this.
The second puffing valve 4b is arranged between water heat exchanger 2 and the brine-cooled heat exchanger 9, and it is supplied by water heat exchanger 2 cold-producing mediums cooling and reduce to low pressure from high pressure to brine-cooled heat exchanger 9.In addition, be similar to the above-mentioned first expansion valve 4a, the configuration of the second puffing valve 4b is as follows: its valve extent of opening can electricity be regulated and automatically controlled by following control module 12.
By heat-shift at salt solution and between by the low-temp low-pressure gaseous refrigerant of second expansion valve 4b decompression, 9 pairs of salt solution of brine-cooled heat exchanger cool off.Salt water passage 9b is provided with adjacent with low pressure refrigerant path 9a, so that the salt solution among cold-producing medium among the low pressure refrigerant path 9a and the salt water passage 9b flows in the opposite direction.
Next, connect terminal brine loop B, comprising: be linked to be ring-like conduct or provide the cool brine circulating pump 8 of the salt water passage 9b of the brine-cooled heat exchanger 9 of brine-cooled device, a circulating brine and a terminal heat exchanger 10 that cools off terminal 11 inside with refrigerated brine.Antifreezing agent solution (for example as being added with the water or the LLC (engine cooling water) of anticorrosive or antifreezing agent) as salt solution, is sealed among the brine loop B.
As shown in Figure 1, cool brine circulating pump 8 is arranged among the brine loop B, so that to the salt water route 9b of brine-cooled heat exchanger 9 supply salt solution, thus the current that produce the end 11 from brine loop B to flow out.The flow velocity of cool brine circulating pump 8 or flow can be regulated according to the rotating speed of built-in motor (not shown).
Label 12 is represented control module, and it is used to control the operation that has the heat pump type hot water supply system of refrigerating function according to of the present invention.The signal that control module 12 receives from control panel, all temps sensor and other equipment (not shown), and to output control signals such as coolant compressor 1, on-off valve 3a, 3b, expansion valve 4a, 4b, hot water water supply circulating pump 6 and cool brine circulating pumps 8.
Next, with the operation of the current embodiment of brief explanation.At first, coolant compressor 1 extraction, compression and refrigerant emission.So the high-temperature high-pressure refrigerant of discharging flows among the high-pressure refrigerant path 2a of water heat exchanger 2, and with the hot water water supply heat-shift that in adjacent hot water water supply path 2b, flows.By this way, cold-producing medium is cooled and hot water supply water is heated.So the hot water of heating supply water (high-temperature water) is stored in the boiler 7, and is used for hot-water supply.
On the other hand, as the first on-off valve 3a " unlatching " and the second on-off valve 3b when " closing ", the high-pressure refrigerant that is cooled off by water heat exchanger 2 flows into the first expansion valve 4a and is depressurized.So the low-temperature low-pressure refrigerant of decompression flow into empty heat exchanger 5 and with the air exchange heat.By this way, cold-producing medium is heated and air is cooled.So the solution-air cold-producing medium of heating is sent to gas-liquid separator 55, and is divided into gaseous refrigerant and liquid refrigerant two parts.Liquid refrigerant is stored, and gaseous refrigerant is sucked in the coolant compressor 1 alone once more.
Suppose that the first on-off valve 3a " closes " and the second on-off valve 3b " unlatching ".According to system's operating mode of the present invention, as follows: as to flow into the second expansion valve 4b and by its decompression by the cold-producing medium of water heat exchanger 2 cooling, and then flow among the low pressure refrigerant path 9a of brine-cooled heat exchanger 9.In the second expansion valve 4b, the refrigerant temperature that flows into low pressure refrigerant path 9a is controlled in approximately-15 ℃.Like this, the salt solution that flows among the adjacent salt water passage 9b just is cooled to approximately-10 ℃.Utilize cool brine circulating pump 8, so the salt solution of cooling just is supplied to the terminal heat exchanger 10 that is arranged in terminal 11, thus the inside of cooling terminal 11.
Below, characteristics of the present invention will be described.At first, the second refrigerant loop R2 in the downstream of high-pressure refrigerant path 2a from the first refrigerant loop R1 branch, with the first refrigerant loop R1 parallel running, and, converge at the upstream and the first refrigerant loop R1 of coolant compressor 1 through the low pressure refrigerant path 9a of the second expansion valve 4b and brine-cooled heat exchanger 9.Salt water passage 9b, cool brine circulating pump 8 and the terminal heat exchanger 10 of brine-cooled heat exchanger 9 is linked to be ring-like, thereby forms cool brine loop B1.Cause cold-producing medium in the second refrigerant loop R2, to flow, start cool brine circulating pump 8 simultaneously.By this way, exchange between the low-temperature low-pressure refrigerant that heat just flows in low pressure refrigerant path 9a and the salt solution mobile in salt water passage 9b, thereby cooled off salt solution.
Here it is, and the special used heat that utilizes heat pump hot water supply system that proposes of inventor comes refrigerated brine, and the salt solution of use cooling like this is realized the intention of cooling or freezing/refrigeration operation.Therefore, use simple cooling cycle system, just can realize hot water supply and cooling or freezing/refrigeration operation simultaneously with unified thermal source; Utilize these used heat simultaneously and realize energy-conservation.In addition, also can reduce equipment cost and operation expense.
In addition, the first on-off valve 3a and the second on-off valve 3b that switch the first refrigerant loop R1 and the second refrigerant loop R2 are set, just can switch to the heat exchanger of heat absorption side according to mode of operation.In addition, the function of empty heat exchanger 5 comes down to identical with the function of brine-cooled heat exchanger 9.Therefore, by minimum modification, existing heat pump type hot water supply system just can increase the function of cooling.
In addition, terminal heat exchanger 10 is arranged in terminal 11, thus cooling and keep the low temperature of terminal 11 inside.Terminal 11 refer to indoor cooler/air-conditioning, freezer unit, refrigerator, wine cellar etc. here.Salt solution by 9 coolings of brine-cooled heat exchanger is imported into the terminal heat exchanger 10 that is arranged in each end 11, and terminal like this 11 inside just can be cooled or freezing/refrigeration, and can keep this state of cooling.
As mentioned above, produced simultaneously useless cold-peace used heat so just can be saved total energy as low-temperature receiver and thermal source when utilizing heat pump for supplying hot water.In addition, realize that refrigerating function does not need special-purpose low-temperature receiver or thermal source, as long as and the simple device that as terminal heat exchanger 10 be set just can realize this refrigerating function.In addition, as the circulatory system of using salt solution as intermediary,, just can simply increase and to cool off or to preserve nice and cool end 11 by in addition particular end 11 being linked on the brine loop B.
(second embodiment)
Fig. 2 is the structural representation according to the heat pump type hot water supply system with refrigerating function of second embodiment of the invention.The difference of current embodiment and above-mentioned first embodiment, be: according to current embodiment, refrigerant loop R comprises: cold-producing medium heat radiation heat exchanger 13, it has high-pressure refrigerant path 13a (wherein flowing and flowing through the high-pressure refrigerant of water heat exchanger 2) and low pressure refrigerant path 13b (wherein flowing and flowing through the low pressure refrigerant of air heat exchanger 5 or brine-cooled heat exchanger 9).Flow through the low-temperature refrigerant of low pressure refrigerant path 13b by heating, the heat of the high-pressure refrigerant that flows among the high-pressure refrigerant path 13a just is radiated.
Be different from and use inner heat exchanger to press and the legacy system of improvement cycle efficieny with the extraction that improves compressor, even do not need to add under the situation of hot water for hot water, thereby structure of the present invention also allows radiations heat energy realization refrigerating function as required.
In the configuration of above-mentioned first embodiment, when water was not heated with hot-water supply (not dispelling the heat), salt solution just can not get cooling (heat can't be absorbed), so just can't stablize the realization refrigerating function.Different with it, according to current embodiment, even do not need to add hot water for hot water, heat sinking function also can be guaranteed.Like this, always can stably realize refrigerating function.In addition, also can improve the swabbing pressure of coolant compressor 1 according to the configuration of current embodiment, thus conserve energy.
(the 3rd embodiment)
Fig. 3 is the structural representation of the heat pump type hot water supply system with refrigerating function of a third embodiment in accordance with the invention.The difference of current embodiment and above-mentioned second embodiment is: according to current embodiment, use injector 14 to replace the first and second expansion valve 4a, 4b as the puffing device.Explain the structure of the injector 14 that constitutes characteristic of the present invention with reference to Fig. 4.
Injector 14 comprises: a nozzle 14a, and being used for that the pressure energy (pressure head) through coolant compressor 1 high-pressure refrigerant compression, the pressurized water of flowing through heat exchanger 2 is converted to speed can (velocity head), thereby cold-producing medium is reduced pressure and expands; One is extracted part 14b: utilize the high speed cold-producing medium stream that ejects from nozzle 14a, be used for extracting the brine-cooled heat exchanger 9 that is connected to low-pressure side or the gaseous refrigerant of empty heat exchanger 5 evaporations; Mixing portion 14c: be used for the extraction cold-producing medium is mixed with the cold-producing medium that ejects from nozzle 14a; And diffuser 14d: be used for speed can be converted to pressure energy and increase the pressure of cold-producing medium.
The cold-producing medium that flows out from injector 14 flow into the gas-liquid separator 55.Not necessarily only increase from the pressure of the cold-producing medium of injector 14 ejection, and when the gaseous refrigerant that evaporates in low-pressure side was drawn into mixing portion 14c, the pressure of cold-producing medium also increased by diffuser 14d.Like this, mixing portion 14c and diffuser 14d just together are called pressure increases part.In addition, according to current embodiment, the cross sectional area of mixing portion 14c is constant, up to diffuser 14d.Yet as a kind of selection, it is tapered that the cross sectional area of mixing portion 14c can become, and its cross sectional area increases gradually towards diffuser 14d.
Therefore, compare with the situation of using expansion valve, the cold-producing medium loop structure is simplified, and the energy recovering effect of injector 14 also makes rate of heat exchange (COP) improve about 20%.
In addition, in the cold-producing medium of nozzle 14a upstream, be provided with a variable restriction or throttle mechanism (variable restriction or throttling arrangement) 14e, it is by control dividing plate or barrier film opening, thus the pressure of control high-pressure refrigerant.Variable restriction or throttle mechanism (variable restriction or throttling arrangement) 14e is undertaken automatically controlled by unshowned control module 12, to realize refrigerated brine and the different optimal evaporation pressure that absorbs the air heat.In addition, because CO
2Cold-producing medium discharges and is easy to produce the effect of injector 14 from coolant compressor 1 under high pressure conditions, so CO
2As the cold-producing medium that flows among the refrigerant loop R.
(the 4th embodiment)
Fig. 5 is the structural representation of the heat pump type hot water supply system with refrigerating function of a fourth embodiment in accordance with the invention.The difference of the 4th embodiment and the 3rd embodiment, be: in the 4th embodiment, cool brine loop B1 with salt water passage 9b, cool brine circulating pump 8 and a terminal heat exchanger 10 of connecting into ring-like brine-cooled heat exchanger 9, the cold storing box 15 of the salt solution of cooling is stored in the downstream that is included in brine-cooled heat exchanger 9 in the salt solution.Therefore, even when suspending brine-cooled operation in the brine-cooled heat exchanger 9, also can continue to be cooled in terminal 11 inside.
In addition, cool brine loop B1 comprises: the bypass circulation B3 that walks around terminal heat exchanger 10, circulating brine; And the on-off valve (peripheral passage switching device shifter) 20,21 that is used for the salt solution circulation is switched to terminal heat exchanger 10 or bypass circulation B3.Even do not need terminal heat exchanger 10 to cool off, also can be by salt solution circulation is switched to bypass circulation B3 with refrigerated brine, realize refrigeration operation and in refrigerating box 15, store refrigerated brine.
In addition, system also comprises: a salt solution heating circuit K2 (comprising the high-temperature water path 16a and the high-temperature water circulating pump 17 that are linked to be ring-like boiler 7, salt solution reheat heat exchanger 16) and hot salt brine loop B2 (comprise salt water passage 16b, the hot salt brine circulating pump 18 that is linked to be ring-like salt solution reheat heat exchanger 16 and be arranged on terminal heat exchanger 10 in terminal 11).
Start high-temperature water circulating pump 17 and hot salt brine circulating pump 18, will heat-shift between the salt solution that flows among high-temperature water that in high-temperature water path 16a, flows and the salt water passage 16b.Simultaneously, the brine stream of heating like this is through terminal heat exchanger 10, thereby terminal 11 inside of heating and maintenance are warm.In addition, label 19 to 22 is represented the on-off valve.When salt solution circulation time in the B1 of cool brine loop, the on-off valve 19 of cool brine loop B1 is opened, and the on-off valve 22 of hot salt brine loop B2 cuts out simultaneously.On the other hand, when salt solution circulation time in the B2 of hot salt brine loop, the on-off valve 22 of hot salt brine loop B2 is opened, and the on-off valve 19 of cool brine loop B1 cuts out simultaneously.
The various embodiments described above all have refrigerating function with end 11 configurations.In contrast, according to present embodiment, salt solution reheat heat exchanger 16 combines with hot salt brine loop B2, and in the same end heat exchanger 10 that when the salt solution of heating is imported into cooling, in same end 11, is provided with.By this way, as heating operation or heating/heat storage operation, terminal 11 inside also can be heated and keep warm.Like this, this configuration just can guarantee that terminal 11 have the cooling function of requirement.
(the 5th embodiment)
Fig. 6 is the structural representation according to the heat pump type hot water supply system with refrigerating function of fifth embodiment of the invention.The difference of current embodiment and above-mentioned the 4th embodiment is: according to the 5th embodiment, salt solution heating circuit K2 comprises a high-temperature water heat radiation heat exchanger 23.This is corresponding to second embodiment, and wherein salt solution heating circuit K2 comprises high-temperature water heat radiation heat exchanger 23 and replaces above-mentioned cold-producing medium heat radiation heat exchanger 13.High-temperature water heat radiation heat exchanger 23 is used for by the radiations heat energy with the atmosphere heat-shift, and when hot salt brine circulating pump 18 suspends, by starting high-temperature water circulating pump 17, can realize the heat radiation operation.
Even do not need heating, because simultaneously from hyperthermia radiation heat exchanger 23 radiations heat energies, so through the circulation of refrigerant loop R, hot water supply water heating circuit K and salt solution heating circuit K2, hot water supply water also obtains heating with hot-water supply.By this way, guaranteed heat radiation.Therefore, whenever can stably realize refrigerating function.
(the 6th embodiment)
Fig. 7 is the configuration schematic diagram of the heat pump type hot water supply system with refrigerating function according to a sixth embodiment of the invention.The difference of current embodiment and above-mentioned the 4th embodiment is: hot storing apparatus 24 be separately positioned on terminal heat exchanger 10 around.Therefore, cold storing box 15 and bypass loop B3 among the 4th embodiment have been removed; Even stoped the circulation of cool brine or hot salt brine like this, also can according to circumstances continue to be cooled or to heat in terminal 11 inside.
In addition, many terminal heat exchanger 10a are parallel to cool brine loop B1 or hot salt brine loop B2 to 10c.By this way, can increase or reduce the number of the end 11 of terminal heat exchanger 10 and the terminal heat exchanger 10 of use easily.In addition, many terminal heat exchanger 10a parallel with one another are connected to 20c with the flow control valve or circulation control valve (volume control device or circulation control device or the flow control device) 20a that are used to control brine stream respectively to 10c.Therefore, each terminal heat exchanger 10a just can be controlled to the duty of 10c.
(other embodiment)
The foregoing description uses overcritical heat pump cycle to circulate as cold-producing medium, is used for heat hot water supply water and refrigerated brine.Yet the present invention is not limited to this structure, and it can use other kind of refrigeration cycle of cold-producing medium compression-type.In addition, employed cold-producing medium also can be chlorofluorocarbon (CFC) or CFC substitute.
In the above-described embodiments, flow and between the first refrigerant loop R1 and the second refrigerant loop R2, to switch easily.Yet in predetermined circulation, they also can alternately switch more frequently tiredly.In addition, do not use two switch valve 3a, 3b in the foregoing description to switch refrigerant loop,, can use single transfer valve yet as selection.In addition, decompressor also can be capillary (capillary) type or other any type.In addition, the liquid that circulates among the brine loop B is not limited to antifreeze solvent, as long as chilling temperature is not less than 0 ℃, also can adopt light water.
For illustration purpose, though the present invention is described with reference to selected specific embodiment, clearly: under the situation that does not deviate from design of the present invention and scope, those of ordinary skill in the art can make multiple modification to it.
Claims (11)
1. heat pump type hot water supply system with refrigerating function comprises:
First refrigerant loop (R1), it comprises the coolant compressor (1) of the compressed refrigerant that ring-type connects, high-pressure refrigerant path (2a), the first puffing device (4a) and the air heat exchanger (5) of water heat exchanger (2); And
Hot water water supply heating circuit (K), it comprises hot water water supply path (2b), hot water water supply circulating pump (6) and the boiler (7) of the described water heat exchanger (2) that ring-type connects;
Wherein: coolant compressor (1) and hot water water supply circulating pump (6) are activated, thereby heat-shift between high-temperature high-pressure refrigerant that flows in high-pressure refrigerant path (2a) and the hot water that flows in hot water water supply path (2b) supply water supplies water thereby heat described hot water;
System further comprises:
Second refrigerant loop (R2), this loop comprises the low pressure refrigerant path (9a) of the second puffing device (4b) and brine-cooled heat exchanger (9), this loop in the downstream of described high-pressure refrigerant path (2a) from first refrigerant loop (R1) branch, with first refrigerant loop (R1) parallel running, and converge in the upstream of coolant compressor (1) with described first refrigerant loop (R1);
Brine loop (B), it comprises the terminal heat exchanger (10) in salt water passage (9b), cool brine circulating pump (8) and the ring of the brine-cooled heat exchanger (9) that ring-type connects; With
Be used for the high-pressure refrigerant path (13a) of the high-pressure refrigerant process by described water heat exchanger (2) and be used for low pressure refrigerant path (13b) by the low pressure refrigerant process of described brine-cooled heat exchanger (9); It is characterized in that:
Cold-producing medium flows through second refrigerant loop (R2) and starts cool brine circulating pump (8), and heat just exchanges between the salt solution of low temperature, the low pressure refrigerant of low pressure refrigerant path (9a) that flow through and salt water passage (9b) that flow through like this, thus refrigerated brine; And it is characterized in that comprising: cold-producing medium heat radiation heat exchanger (13), it is used for flowing through the low pressure refrigerant of low pressure refrigerant path (13b) from the high-pressure refrigerant radiations heat energy of the high-pressure refrigerant path (13a) of flowing through by heating.
2. heat pump type hot water supply system with refrigerating function according to claim 1 comprises:
Gas-liquid separator (55) is used for the cold-producing medium of refrigerant loop (R) is divided into gas part and liquid part, and gaseous refrigerant is delivered to coolant compressor (1); And
Injector (14) comprising:
Nozzle (14a), instead a kind of decompression, the expansion gear of the first puffing device (4a) and the second puffing device (4b), the pressure energy of the compression and the high-pressure refrigerant of the water heat exchanger of flowing through (2) is converted into the speed energy in coolant compressor (1) like this, thereby cold-producing medium is reduced pressure and expands; With
Supercharging part (14c, 14d): by it, the quick refrigerant stream that utilization is ejected from nozzle (14a), be connected in the brine-cooled heat exchanger (9) of low-pressure side and the air heat exchanger (5) that the gaseous refrigerant of evaporation is sucked in selected one, and the refrigerant mixed that cold-producing medium that is aspirated and nozzle (14a) eject, meanwhile, speed can be converted to pressure energy, thereby compression flows into the cold-producing medium of gas-liquid separator (55).
3. heat pump type hot water supply system with refrigerating function according to claim 2 further comprises:
Be arranged in the cold-producing medium, the variable restrictor device 14e of nozzle (14a) upstream, be used for by controlling its throttling extent of opening, the pressure of control high-pressure refrigerant.
4. heat pump type hot water supply system according to claim 2 with refrigerating function, wherein:
The cold-producing medium of refrigerant loop (R) of flowing through is carbon dioxide (CO
2).
5. heat pump type hot water supply system according to claim 1 with refrigerating function, wherein:
The refrigerating box (15) that is used for storing the salt solution of cooling is arranged on the downstream of brine-cooled heat exchanger (9) in the salt solution of cool brine loop (B1), and wherein said cool brine loop (B1) comprises salt water passage (9b), cool brine circulating pump (8) and the terminal heat exchanger (10) of the described brine-cooled heat exchanger (9) that ring-type connects.
6. heat pump type hot water supply system according to claim 5 with refrigerating function, wherein:
Cool brine loop B1 comprises: the bypass circulation (B3) of walking around terminal heat exchanger (10); And be used for switching between the heat exchanger (10) and bypass circulation (B3) endways the peripheral passage switching device shifter (20,21) of salt solution circulation.
7. heat pump type hot water supply system with refrigerating function according to claim 1 comprises:
Salt solution heating circuit (K2), it comprises the boiler (7) of ring-type connection, the high-temperature water path (16a) and the high-temperature water circulating pump (17) of salt solution reheat heat exchanger (16); And
Hot salt brine loop (B2), it comprises salt water passage (16b), the hot salt brine circulating pump (18) of the described salt solution reheat heat exchanger (16) that ring-type connects and is arranged on terminal heat exchanger (10) in the end (11);
Wherein start high-temperature water circulating pump (17) and hot salt brine circulating pump (18), exchange between the mobile salt solution in the high-temperature water that in high-temperature water path (16a), flows of heat and the salt water passage (16b) like this, thereby add hot salt brine, and the salt solution after will heating simultaneously is fed to terminal heat exchanger (10), thereby heating and maintenance terminal (11) are inner warm.
8. heat pump type hot water supply system according to claim 1 with refrigerating function, wherein:
Salt solution heating circuit (K2) comprises high temperature heat radiation heat exchanger (23).
9. heat pump type hot water supply system according to claim 7 with refrigerating function, wherein:
Hot storing apparatus or heat storage part (24) be arranged on terminal heat exchanger (10) around.
10. heat pump type hot water supply system according to claim 7 with refrigerating function, wherein:
A plurality of terminal heat exchangers (10a is to 10c) are parallel among selected cool brine loop (B1) and hot salt brine loop (B2).
11. the heat pump type hot water supply system according to claim 10 with refrigerating function, wherein:
The terminal heat exchanger (10a is to 10c) of a plurality of parallel connections is connected with flow-control that is used to control brine stream or circulation control device (20a is to 20c) respectively.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP200341627 | 2003-02-19 | ||
| JP2003041627 | 2003-02-19 | ||
| JP2003118542A JP3861845B2 (en) | 2003-02-19 | 2003-04-23 | Heat pump type hot water supply device combined with cold function |
| JP2003118542 | 2003-04-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523301A true CN1523301A (en) | 2004-08-25 |
| CN1265136C CN1265136C (en) | 2006-07-19 |
Family
ID=32929631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410005499 Expired - Fee Related CN1265136C (en) | 2003-02-19 | 2004-02-19 | Heat pump type hot water supply system with cooling function |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3861845B2 (en) |
| CN (1) | CN1265136C (en) |
| DE (1) | DE102004007932A1 (en) |
Cited By (8)
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| CN101929778A (en) * | 2010-09-08 | 2010-12-29 | 李洲 | Refrigeration equipment |
| CN102287615A (en) * | 2010-06-21 | 2011-12-21 | 范昌海 | Method and device for reducing circulating pump lift of high-order circulating water system |
| CN102472537A (en) * | 2009-10-16 | 2012-05-23 | 株式会社日立制作所 | Air-conditioning hot-water supply system |
| CN105928200A (en) * | 2016-04-28 | 2016-09-07 | 湖南科技大学 | Air source heat pump high-temperature water heating system suitable for low-temperature environment |
| CN106500404A (en) * | 2016-12-27 | 2017-03-15 | 江苏天舒电器股份有限公司 | A kind of pair of transfiguration heat pump cold-hot combined supply system and its control method |
| CN106642805A (en) * | 2016-12-27 | 2017-05-10 | 江苏天舒电器股份有限公司 | Control method and device for double-variable-capacity heat pump cooling and heating combined system |
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| JP4827191B2 (en) * | 2004-11-12 | 2011-11-30 | 株式会社前川製作所 | Operation method of heat pump using CO2 as refrigerant |
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-
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- 2004-02-18 DE DE200410007932 patent/DE102004007932A1/en not_active Withdrawn
- 2004-02-19 CN CN 200410005499 patent/CN1265136C/en not_active Expired - Fee Related
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| CN102287615A (en) * | 2010-06-21 | 2011-12-21 | 范昌海 | Method and device for reducing circulating pump lift of high-order circulating water system |
| CN102287615B (en) * | 2010-06-21 | 2015-07-08 | 范昌海 | Method and device for reducing circulating pump lift of high-order circulating water system |
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| CN106500404B (en) * | 2016-12-27 | 2022-04-12 | 江苏天舒电器股份有限公司 | Double-variable-capacity heat pump cold and heat combined supply system and control method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102004007932A1 (en) | 2004-09-30 |
| JP2004309093A (en) | 2004-11-04 |
| JP3861845B2 (en) | 2006-12-27 |
| CN1265136C (en) | 2006-07-19 |
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