CN112710104B - Combined type refrigeration or heating unit system - Google Patents

Combined type refrigeration or heating unit system Download PDF

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Publication number
CN112710104B
CN112710104B CN202011053177.XA CN202011053177A CN112710104B CN 112710104 B CN112710104 B CN 112710104B CN 202011053177 A CN202011053177 A CN 202011053177A CN 112710104 B CN112710104 B CN 112710104B
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water
valve
fluorine
evaporator
pipeline
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CN112710104A (en
Inventor
徐成永
吕正新
李国庆
郭光玲
孟鑫
张领
高建廷
李刚
冯西培
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KUNSHAN TECKA ELECTROMECHANICAL CO Ltd
Rail Transport Energy Saving Beijing Engineering Research Center Co ltd
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KUNSHAN TECKA ELECTROMECHANICAL CO Ltd
Rail Transport Energy Saving Beijing Engineering Research Center Co ltd
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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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

The invention discloses a combined type refrigerating or heating unit system, which comprises: the system comprises a cold/hot water circulating water loop, an evaporative cooling type compression loop, a water-water heat pump type compression loop, a heat source side circulating water loop and a water supplementing constant pressure loop, wherein the evaporative cooling cold water (heat pump) unit technology, a water (ground) source cold water (heat pump) unit technology, a cold/hot water distribution system, a constant pressure water supplementing system and a cooling water system are perfectly combined by connecting the loops in different modes, and the advantages and the characteristics of the systems are furthest exerted in the operation process through the design concepts of 'mixed refrigeration/heating' and 'mixed cooling/heat absorption', so that the advantages and the characteristics of the systems are made good for each other, and the energy saving effect of the systems is greatly improved.

Description

Combined type refrigeration or heating unit system
Technical Field
The invention relates to the technical field of refrigeration air conditioners, in particular to a combined type refrigeration or heating unit system.
Background
The water (ground) source heat pump system technology is a renewable energy utilization technology and has the characteristics of high efficiency, energy conservation, low operation cost, good social benefit and the like. With the rapid development of economy and the national policy support for new energy technology, the popularization and utilization of the water (ground) source heat pump technology have important significance for energy conservation, emission reduction and development of environment-friendly circular economy.
The biggest pain point of this technique is in the system year operation in-process because inhale, the unbalanced problem of heat extraction, lead to heat accumulation, arouse system performance to descend, adopt solar energy technique or water-cooling technique to supply it usually in industry, thereby solve this problem, because of receiving the influence of multiple factors such as design, structure, installation, debugging again, the combination of this system appears with the mode of air conditioning system solution measure mostly at present stage, the thought of the product design of really accomplishing to integrate hardly, design, application, operation and maintenance are all very complicated in the implementation process, it is intelligent low, energy-conserving effect is limited simultaneously.
Chinese patent CN17310413 discloses a compression type refrigerating and heating equipment and heat pump water heater combined unit, but the design of the combined unit is very complex and lacks flexibility.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention provides a composite cold type (evaporative cooling type and water-water heat pump) cold water (heat pump) unit system, which has the greatest advantages of perfectly combining the evaporative cooling cold water (heat pump) unit technology and the water (ground) source cold water (heat pump) unit technology, a cold/hot water distribution system, a constant pressure water supply system and a cooling water system, and by the design concepts of "mixed cooling/heating" and "mixed cooling/heat absorption", the advantages and characteristics of each system are exerted to the greatest extent in the operation process, thereby making up for the deficiencies of each system, and greatly improving the energy saving effect of the system.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a compound refrigeration or heating unit system comprising:
the cold/hot water circulating water loop comprises a circulating water pump, one side of a water outlet of the circulating water pump is connected to a water inlet of an evaporator, a water outlet of the evaporator is connected to a water supply port of an air conditioning system, and the inlet side of the circulating water pump is connected to a water return port of the air conditioning system through a pipeline a;
the heat source side water circulation loop comprises a cooling water pump, wherein the outlet of the cooling water pump is connected to the water inlet of a condenser, the water outlet of the condenser is connected to the water outlet of the heat source side, the suction inlet of the cooling water pump is connected to a filtering device, and the filtering device is connected to the water inlet of the heat source side;
an evaporative cooling type compression circuit comprises a compressor, wherein an exhaust port of the compressor is connected to a fluorine pipeline b, one side of the fluorine pipeline b is connected with a valve, an outlet of the valve is connected to a fluorine pipeline c, the fluorine pipeline c is connected to a valve, the valve is connected to a fluorine side air port of an evaporative condenser, a fluorine side liquid port of the evaporative condenser is connected to a valve, the valve is connected to a throttling mechanism, the throttling mechanism is connected to a liquid port on the fluorine side of an evaporator, the air port on the fluorine side of the evaporator is connected to a fluorine pipeline e, the fluorine pipeline e is connected to a valve, the valve is connected to a fluorine pipeline d, and the fluorine pipeline d is connected to an air suction port of the compressor;
the water-water heat pump type compression loop comprises a compressor, wherein an exhaust port of the compressor is connected to a fluorine pipeline b, one side of the fluorine pipeline b is connected with a valve, an outlet of the valve is connected to a fluorine pipeline c, the fluorine pipeline c is connected to a valve, the valve is connected to a fluorine side air port of a condenser, a fluorine side liquid port of the condenser is connected to a valve, the valve is connected to a throttling mechanism, the throttling mechanism is connected to a liquid port on the fluorine side of an evaporator, an air port on the fluorine side of the evaporator is connected to a fluorine pipeline e, the fluorine pipeline e is connected to a valve, the valve is connected to a fluorine pipeline d, and the fluorine pipeline d is connected to an air suction port of the compressor.
Optionally, a water supplementing constant pressure loop is connected to the pipeline a of the cold/hot water circulating water loop.
Optionally, the water supplementing constant pressure loop comprises a water supplementing port and a manual water supplementing device or an automatic water supplementing device communicated with the water supplementing port, and the expansion tank performs constant pressure.
Optionally, a valve is arranged between the fluorine pipeline b and the fluorine pipeline e.
Optionally, a valve is arranged between the fluorine pipeline d and the fluorine pipeline c.
Preferably, an independent evaporative cooling type compression loop and an independent water-water heat pump type compression loop are led out from a water inlet pipe and a water outlet pipe of the cold/hot water circulating water loop through control valves respectively.
Specifically, the method comprises the following steps:
the cold/hot water circulating water loop comprises a circulating water pump, one side of a water outlet of the circulating water pump is connected to a water inlet of a first evaporator, a water outlet of the first evaporator is connected to a water supply port of an air conditioning system through a first valve, a water inlet of the other side of the circulating water pump is connected to a first filtering device, the first filtering device is connected to a water return port of the air conditioning system through a water return pipeline a of the air conditioning system, and a water supplementing constant pressure loop is further connected to the water return pipeline a of the air conditioning system;
the heat source side circulating water loop comprises a cooling water pump, an outlet of the cooling water pump is connected to a water inlet of a condenser, a water outlet of the condenser is connected to a water outlet of a heat source, a suction inlet of the cooling water pump is connected to a second filtering device, and the second filtering device is connected to a water inlet of a heat source side;
the single evaporation cooling type compression circuit comprises a second compressor, the exhaust port of the second compressor is connected to a fifth fluorine pipeline b2, one side of the fifth fluorine pipeline b2 is connected with a seventh valve, the other side of the fifth fluorine pipeline is connected with a sixth valve, the outlet of the seventh valve is connected with a sixth fluorine pipeline c2, the sixth fluorine pipeline c2 is connected with the air port of the fluorine side of the evaporation condenser, the liquid port of the fluorine side of the evaporation condenser is connected with a second throttling mechanism, the throttling mechanism is connected with the liquid port of the fluorine side of a second evaporator, the air port of the fluorine side of the second evaporator is connected with an eighth fluorine pipeline e2, the eighth fluorine pipeline e2 is respectively connected with a sixth valve and an eighth valve, the eighth valve is connected with a seventh fluorine pipeline d2, the seventh fluorine pipeline d2 is respectively connected with the air suction port of the second compressor and a ninth valve, the other end of the ninth valve is connected with a fourth fluorine pipeline c2, the water supply port of the second evaporator is connected with an air-conditioning system water supply pipeline f through a tenth valve, the water return port of the second evaporator is connected with a water return pipeline a of the air conditioning system;
the single water-water heat pump type compression circuit comprises a first compressor, wherein the exhaust port of the first compressor is connected to a first fluorine line b1, one side of the first fluorine line b1 is connected with a third valve, the outlet of the third valve is connected to a second fluorine line c1, the second fluorine line c1 is connected to the gas port on the fluorine side of a condenser, the liquid port on the fluorine side of the condenser is connected to a first throttling mechanism, the first throttling mechanism is connected to the liquid port on the fluorine side of an evaporator, the gas port on the fluorine side of the evaporator is connected to a fourth fluorine line e1, the fourth fluorine line e1 is connected with a fourth valve, the fourth valve is connected to a third fluorine line d1, and the third fluorine line d1 is respectively connected with a fifth valve and the suction port of the first compressor.
Optionally, a second valve is connected between the first fluorine line b1 and the fourth fluorine line e 1.
Optionally, a ninth valve 1052 is connected between the seventh fluorine line d2 and the sixth fluorine line c 2.
Preferably, the method comprises the following steps:
the cold/hot water circulating water loop comprises a circulating water pump, one side of a water outlet of the circulating water pump is connected to a water inlet of a first evaporator, a water outlet of the first evaporator is connected to a water supply port of an air conditioning system through a first valve, a water inlet of the other side of the circulating water pump is connected to a first filtering device, the first filtering device is connected to a water return port of the air conditioning system through a water return pipeline a of the air conditioning system, and a water supplementing constant pressure loop is further connected to the water return pipeline a of the air conditioning system;
the heat source side circulating water loop comprises a cooling water pump, an outlet of the cooling water pump is connected to a water inlet of a condenser, a water outlet of the condenser is connected to a water outlet of a heat source, a suction inlet of the cooling water pump is connected to a second filtering device, and the second filtering device is connected to a water inlet of a heat source side;
the single evaporation cooling type compression circuit comprises a second compressor, wherein the exhaust port of the second compressor is connected to a fifth fluorine pipeline b2, one side of the fifth fluorine pipeline b2 is connected to the fluorine-side air port of the evaporation condenser, the fluorine-side liquid port of the evaporation condenser is connected to a second throttling mechanism, the throttling mechanism is connected to the fluorine-side liquid port of a second evaporator, and the water return port of the second evaporator is connected with a water return pipeline a of the air conditioning system;
the single water-water heat pump type compression circuit comprises a first compressor, wherein the exhaust port of the first compressor is connected to a first fluorine line b1, one side of the first fluorine line b1 is connected with a third valve, the outlet of the third valve is connected to a second fluorine line c1, the second fluorine line c1 is connected to the gas port on the fluorine side of a condenser, the liquid port on the fluorine side of the condenser is connected to a first throttling mechanism, the first throttling mechanism is connected to the liquid port on the fluorine side of an evaporator, the gas port on the fluorine side of the evaporator is connected to a fourth fluorine line e1, the fourth fluorine line e1 is connected with a fourth valve, the fourth valve is connected to a third fluorine line d1, and the third fluorine line d1 is respectively connected with a fifth valve and the suction port of the first compressor.
The technical scheme of the invention has the following advantages:
the combined type refrigeration or heating unit system provided by the embodiment of the invention is different from the traditional water (ground) source heat pump unit and system, the integrated 'mixed refrigeration/heating' design concept is adopted to carry out cold supplement and heat supplement on the air conditioner terminal system, the problem of unbalanced heat absorption and heat extraction of the traditional water (ground) source heat pump system is effectively solved from the perspective of equipment products, and in addition, as the evaporation cooling type cold water (heat pump) unit technology is adopted, compared with the method of adopting solar energy technology or water cooling technology to carry out cold supplement and heat supplement, the system is simpler and easier to realize, and meanwhile, the energy-saving effect is more obvious.
The unit adopts a 'mixed cooling/heat absorption' mode in the operation process, fully exerts respective technical advantages of an evaporative cooling cold water (heat pump) unit technology and a water (ground) source cold water (heat pump) unit technology in the operation process, makes up for deficiencies, can carry out comprehensive judgment according to outdoor 'air energy' condition and 'underground energy storage' condition, flexibly selects an operation mode, and maximally realizes energy-saving and water-saving operation of the unit.
The embodiment of the invention is different from the traditional vapor compression circulating cold water (heat pump) unit, but the design idea of air conditioning system integration is adopted, and a cold/hot water transmission and distribution system, a water supplementing constant pressure system, an evaporation cooling type cold water (heat pump) unit, a water (ground) source type cold water (heat pump) unit and a heat source side circulating water system in the traditional air conditioning system are all integrated, so that the design, installation and debugging of an air conditioning refrigeration station are simpler, the intelligent control degree of the system is higher, the operation and maintenance are more convenient, meanwhile, the unit can be placed outdoors, the limited indoor space is not occupied, and the manufacturing cost of the air conditioning system is further reduced.
Meanwhile, the embodiment of the invention is different from the idea of simple integration of the traditional integrated cold water (heat pump) unit, adopts a complete sharing and common system design concept, carries out sharing design on the compressor, the evaporator, the condenser and the expansion valve, and completes different refrigeration and heating work by switching between the pipelines and the valves, thereby reducing the number of internal components of the unit, leading the unit structure to be more compact, leading the system to be simpler, leading the occupied area to be smaller and leading the unit cost to be lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a combined cooling type (evaporative cooling type and water-water heat pump) cold water (heat pump) unit system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a split type of a composite cold type (evaporative cooling type and water-water heat pump) cold water (heat pump) unit system according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a split-type cold water (heat pump) unit system of a compound cooling type (evaporative cooling type and water-water heat pump) according to a third embodiment of the present invention;
FIG. 4 is an enlarged schematic view of a cold/hot water circulating water circuit;
in the figure:
108: a condenser:
202: an evaporative condenser;
301: a water circulating pump;
302: a water supply port of an air conditioning system;
303: a water return port of the air conditioning system;
304, a manual water replenishing device;
305: automatic water-replenishing device;
306, a water replenishing port;
307, a sewage draining/water draining device;
308, a constant pressure expansion tank;
309: a first valve;
310: a first filtering device;
401, cooling water pump;
402, a second filtering device;
403, heat source side water inlet;
404, a heat source water outlet;
1131: a first evaporator;
1011: a first compressor;
1021, a second valve;
1031, third valve;
1041: a fourth valve;
1051: a fifth valve;
a: a water return pipeline of the air conditioning system;
f: a water supply line of an air conditioning system;
b1, a first fluorine line;
c1, a second fluorine line;
d1, third fluorine pipeline;
e1, fourth fluorine pipeline;
1121: a first throttle mechanism;
1122: the second throttling mechanism:
1132: a second evaporator;
1012: a second compressor;
1022, a sixth valve;
1032, a seventh valve;
1042 is an eighth valve;
1052: a ninth valve;
311: a tenth valve;
b2 fifth fluorine line;
c2, a sixth fluorine pipeline;
d2, seventh fluorine line;
e2 eighth fluorine line.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The composite single-compressor single-circuit refrigeration or heating unit provided by the embodiment is shown in fig. 1, and includes: a cold/hot water circulating water loop, an evaporative cooling type compression loop, a water-water heat pump type compression loop, a heat source side circulating water loop and a water supplementing constant pressure loop.
The cold/hot water circulating water loop comprises a circulating water pump 301, one side of a water outlet of the circulating water pump is connected to a water inlet of an evaporator 113, a water outlet of the evaporator 113 is connected to a water supply port 302 of the air conditioning system, a water inlet of the other side of the circulating water pump is connected to a first filtering device 310, the first filtering device 310 is connected to a water return port 303 of the air conditioning system through a water return pipeline a of the air conditioning system, and a water supplementing constant pressure loop is further connected to the water return pipeline a of the air conditioning system;
the water supplementing constant-pressure loop comprises a manual water supplementing device 304, a water inlet of the manual water supplementing device is connected to a water supplementing port 306 of the air conditioning system, and a water outlet of the manual water supplementing device is connected to a water returning pipeline a of the air conditioning system;
the heat source side circulating water loop comprises a cooling water pump 401, the outlet of the cooling water pump 401 is connected to the water inlet of a condenser 108, the water outlet of the condenser 108 is connected to a heat source water outlet 404, the suction inlet of the cooling water pump 401 is connected to a second filtering device 402, and the second filtering device 402 is connected to a heat source side water inlet 403;
the evaporative cooling type compression circuit comprises a compressor 101, wherein an exhaust port of the compressor 101 is connected to a first fluorine pipeline b, one side of the first fluorine pipeline b is connected with a third valve 103, an outlet of the third valve 103 is connected to a second fluorine pipeline c, the second fluorine pipeline c is connected to a first valve 201, the first valve 201 is connected to a gas port on the fluorine side of an evaporative condenser 202, a liquid port on the fluorine side of the evaporative condenser 202 is connected to a sixth valve 203, the sixth valve 203 is connected to a throttling mechanism 112, the throttling mechanism is connected to a liquid port on the fluorine side of an evaporator 113, a gas port on the fluorine side of the evaporator 113 is connected to a fourth fluorine pipeline e, the fourth fluorine pipeline e is connected to a fourth valve 104, the fourth valve 104 is connected to a third fluorine pipeline d, and the third fluorine pipeline d is connected to a gas suction port of the compressor 101;
the water-water heat pump type compression circuit comprises a compressor 101, wherein an exhaust port of the compressor 101 is connected to a first fluorine pipeline b, one side of the first fluorine pipeline b is connected with a third valve 103, an outlet of the third valve 103 is connected to a second fluorine pipeline c, the second fluorine pipeline c is connected to a seventh valve 107, the seventh valve 107 is connected to a gas port on the fluorine side of a condenser 108, a liquid port on the fluorine side of the condenser 108 is connected to an eighth valve 111, the eighth valve 111 is connected to a throttling mechanism 112, the throttling mechanism 112 is connected to a liquid port on the fluorine side of an evaporator 113, a gas port on the fluorine side of the evaporator 113 is connected to a fourth fluorine pipeline e, the fourth fluorine pipeline e is connected to a fourth valve 104, the fourth valve 104 is connected to a third fluorine pipeline d, and the third fluorine pipeline d is connected to a gas suction port of the compressor 101.
Preferably, in the water supplementing constant pressure loop, a constant pressure expansion tank 308 and a sewage/water draining device 307 are connected between the air conditioning system water return pipeline a and the manual water supplementing device 304; in the water supplementing constant pressure loop, an automatic water supplementing device 305 is connected between the water supplementing port 306 and the water returning pipeline a of the air conditioning system, and the automatic water supplementing device 305 and the manual water supplementing device 304 are arranged in parallel.
The second valve 102 is connected between the first fluorine line b and the fourth fluorine line e.
A fifth valve 105 is connected between the third fluorine line d and the second fluorine line c.
The first valve 201, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105, the sixth valve 203, the seventh valve 107, and the eighth valve 111 are manual valves or electric valves.
The unit system has the following operation modes, and the specific implementation mode is as follows:
evaporative cooling type compression refrigeration operation mode: in this mode, cold water in the cold/hot water circulating water loop enters the unit through the air conditioning system water return port 303, then enters the filtering device 310 for filtering treatment, the treated cold water enters the evaporator 113 for cooling under the action of the circulating water pump 301, the cooled cold water enters the air conditioning system water supply port 302 again to enter the air conditioning system, a cold source is provided for the tail end equipment of the air conditioning system, and the cold water enters the host section through the air conditioning system water return port 303 again after absorbing indoor heat, and the process is repeated. The refrigerant side compression process of the evaporator 113 works as an evaporation cooling type compression circuit, and the refrigerant in the evaporator 113 absorbs the heat of cold water in the circulating water circuit and is vaporized into low-temperature and low-pressure steam. At this time, the fourth valve 104, the third valve 103, the first valve 201, and the sixth valve 203 are opened, the second valve 102, the fifth valve 105, the eighth valve 111, and the seventh valve 107 are closed, the low-temperature and low-pressure vapor enters the fourth valve 104, and is then sucked into the compressor 101, and compressed, and the refrigerant vapor is converted into high-temperature and high-pressure vapor. The refrigerant vapor of high temperature and high pressure enters the evaporative condenser 202 through the third valve 103 and the first valve 201. The refrigerant vapor entering the evaporative condenser 202 gives up heat, condensing the refrigerant vapor into a high pressure, low temperature liquid. The condensed high-pressure low-temperature refrigerant liquid passes through the sixth valve 203, and then is throttled by the throttling mechanism 112 to become low-pressure low-temperature liquid, the low-temperature low-pressure refrigerant liquid enters the evaporator 113 to be subjected to heat absorption vaporization again, and the circulation is performed, so that the cooling process of cold water in the evaporator 113 is realized.
Evaporative cooling type compression heating operation mode: in this mode, hot water in the cold/hot water circulation water circuit enters the unit through the air conditioning system water return port 303, and then enters the first filtering device 310 for filtering treatment, and the treated hot water enters the evaporator 113 for heating under the action of the circulation water pump 301. At the moment, the function of the evaporator is equivalent to that of a compression refrigeration condenser, heated hot water enters the air conditioning system through the water supply port 302 of the air conditioning system again to provide a heat source for end equipment of the air conditioning system, and the hot water enters the main machine section through the water return port 303 of the air conditioning system again after absorbing indoor cold energy and circulates repeatedly. The refrigerant side compression process of the evaporator 113 works as an evaporation cooling type compression circuit, and the refrigerant in the evaporator 113 absorbs the cold energy of the hot water in the circulating water circuit and is condensed into low-temperature high-pressure liquid. At this time, the second valve 102, the fifth valve 105, the first valve 201, and the sixth valve 203 are opened, the third valve 103, the fourth valve 104, the eighth valve 111, and the seventh valve 107 are closed, the low-temperature and high-pressure liquid passes through the throttling structure 112 and then becomes low-temperature and low-pressure liquid, and the low-temperature and low-pressure liquid passes through the sixth valve 203 and enters the evaporative condenser 202, the refrigerant in the evaporative condenser 202 absorbs heat (latent heat) in the air through the heat and mass exchange principle, i.e., air energy, and changes the refrigerant into low-pressure and low-temperature vapor, and then the low-pressure and low-temperature vapor is sucked into the compressor 101 through the first valve 201 and the fifth valve 105 in sequence, the low-temperature and low-pressure vapor is compressed into high-temperature and high-pressure vapor by the compressor 101 and then discharged, and the high-temperature vapor enters the evaporator 113 through the second valve 102 and releases heat, and the cycle is performed, so that the hot water in the evaporator 113 is heated.
The water-water heat pump type compression refrigeration running mode comprises the following steps: in the mode, cold water of a cold/hot water circulating water loop enters the unit from the air conditioning system water return port 303, then enters the first filtering device 310 for filtering treatment, the treated cold water enters the evaporator 113 for cooling under the action of the circulating water pump 301, the cooled cold water enters the air conditioning system water supply port 302 again to enter the air conditioning system, a cold source is provided for the tail end equipment of the air conditioning system, and the cold water enters the host section through the air conditioning system water return port 303 again after absorbing indoor heat, and the process is repeated. The refrigerant side compression process of the evaporator 113 works in a water-water heat pump type compression circuit, and the refrigerant in the evaporator 113 absorbs the heat of cold water in the circulating water circuit and is vaporized into low-temperature and low-pressure steam. At this time, the fourth valve 104, the third valve 103, the seventh valve 107, and the eighth valve 111 are opened, the second valve 102, the fifth valve 105, the first valve 201, and the third valve 203 are closed, the low-temperature and low-pressure vapor enters the fourth valve 104, and is then sucked into the compressor 101, and compressed, and the refrigerant vapor is converted into high-temperature and high-pressure vapor. The refrigerant vapor of high temperature and high pressure enters the condenser 108 through the third valve 103 and the seventh valve 107. The refrigerant vapor entering the condenser 108 gives off heat, condensing the refrigerant vapor into a high pressure, low temperature liquid. The high-pressure low-temperature refrigerant liquid after condensation passes through the eighth valve 111, then is throttled by the throttling mechanism 112 and becomes low-pressure low-temperature liquid, the low-temperature low-pressure refrigerant liquid enters the evaporator 113, heat absorption vaporization is performed again, and the circulation is performed, so that the cooling process of cold water in the evaporator 113 is realized. And under the action of the cooling water pump 401, cooling water is pumped into the condenser 108 on the other side of the condenser 108 to absorb heat of the refrigerant, the heated cooling water enters the ground through the water outlet 404 on the water/ground source side to release heat, the heat is stored underground, the cooling water cooled by releasing heat enters the water/ground source water inlet again, then the cooling water is filtered by the second filtering device 401, the filtered cooling water is sucked into the cooling water pump 401 and then is pumped into the condenser 108 under the action of the cooling water pump 401, and the process of condensing the refrigerant in the condenser 108 is realized by circulating the above steps.
The water-water heat pump type compression heating operation mode comprises the following steps: in this mode, hot water in the cold/hot water circulation water circuit enters the unit through the air conditioning system water return port 303, and then enters the first filtering device 310 for filtering treatment, and the treated hot water enters the evaporator 113 for heating under the action of the circulation water pump 301. At the moment, the function of the evaporator is equivalent to that of a compression refrigeration condenser, heated hot water enters the air conditioning system through the water supply port 302 of the air conditioning system again to provide a heat source for end equipment of the air conditioning system, and the hot water enters the main machine section through the water return port 303 of the air conditioning system again after absorbing indoor cold energy and circulates repeatedly. The refrigerant side compression process of the evaporator 113 is a compression process, and the water-water heat pump type compression circuit works, and the refrigerant in the evaporator 113 absorbs the cold energy of the hot water in the circulating water circuit and is condensed into low-temperature high-pressure liquid. At this time, the second valve 102, the fifth valve 105, the seventh valve 107, and the eighth valve 111 are opened, the third valve 103, the fourth valve 104, the third valve 203, and the first valve 201 are closed, the low-temperature and high-pressure liquid passes through the throttling structure 112 and then becomes low-temperature and low-pressure liquid, and the low-temperature and high-pressure liquid passes through the eighth valve 111 and enters the condenser 108, the refrigerant in the condenser 108 is vaporized by absorbing heat in the cooling water to release heat to become low-pressure and low-temperature vapor, and then the low-pressure and low-temperature vapor is sucked into the compressor 101 through the seventh valve 107 and the fifth valve 105 in sequence, the compressor 101 compresses the low-temperature and low-pressure vapor into high-temperature and high-pressure vapor to be discharged, and the high-temperature and high-pressure vapor enters the evaporator 113 through the second valve 102 to release heat, and the cycle is performed, so that the hot water in the evaporator 113 is heated. And under the action of the cooling water pump 401, the cooling water is pumped into the condenser 108 on the other side of the condenser 108 to absorb the cold energy of the refrigerant, the cooled cooling water enters the ground through the water outlet 404 on the water/ground source side to absorb heat, the cold energy is stored in the ground, the cooling water heated by absorbing heat enters the water/ground source water inlet again, then the cooling water is filtered by the second filtering device 402, the filtered cooling water is sucked into the cooling water pump 401 and then is pumped into the condenser 108 under the action of the cooling water pump 401, and the circulation is carried out, so that the evaporation process of the refrigerant in the condenser 108 is realized.
Example 2
A composite dual-compressor dual-individual-circuit refrigeration or heating unit system of the present embodiment, as shown in fig. 2, includes: a cold/hot water circulating water loop, an independent evaporative cooling type compression loop, an independent water-water heat pump type compression loop, a heat source side circulating water loop and a water supplementing constant pressure loop.
The cold/hot water circulating water loop comprises a circulating water pump 301, one side of a water outlet of the circulating water pump is connected to a water inlet of a first evaporator 1131, a water outlet of the first evaporator 1131 is connected to a water supply port 302 of the air conditioning system through a first valve 309, the other side of the circulating water pump is connected to a first filtering device 310, the first filtering device 310 is connected to a water return port 303 of the air conditioning system through a water return pipeline (a) of the air conditioning system, and a water supplementing constant pressure loop is further connected to the water return pipeline a of the air conditioning system;
the water supplementing constant-pressure loop comprises a manual water supplementing device 304, a water inlet of the manual water supplementing device is connected to a water supplementing port 306 of the air conditioning system, and a water outlet of the manual water supplementing device is connected to a water returning pipeline a of the air conditioning system;
the heat source side circulating water loop comprises a cooling water pump 401, the outlet of the cooling water pump 401 is connected to the water inlet of a condenser 108, the water outlet of the condenser 108 is connected to a heat source water outlet 404, the suction inlet of the cooling water pump 401 is connected to a second filtering device 402, and the second filtering device 402 is connected to a heat source side water inlet 403;
the single evaporative cooling type compression circuit includes a second compressor 1012, the exhaust port of the second compressor 1012 is connected to a fifth fluorine line b2, the fifth fluorine line b2 is connected to a seventh valve 1032 at one side, and is connected to a sixth valve 1022 at the other side, the seventh valve 1032 is connected to a sixth fluorine line c2 at the outlet, the sixth fluorine line c2 is connected to the gas port on the fluorine side of the evaporative condenser 202, the liquid port on the fluorine side of the evaporative condenser 202 is connected to a second throttling mechanism 1122, the throttling mechanism is connected to the liquid port on the fluorine side of a second evaporator 1132, the gas port on the fluorine side of the second evaporator 1132 is connected to an eighth fluorine line e2, the eighth fluorine line e2 is connected to the sixth valve 1022 and an eighth valve 1042, the eighth valve 1042 is connected to a seventh fluorine line d2, the seventh fluorine line d2 is connected to the suction port 1012 and a ninth valve 1052, the other end of the ninth valve 1052 is connected to a fourth fluorine line c2, a water supply port 302 of the second evaporator 1132 is connected with a water supply pipeline f of the air conditioning system through a tenth valve 311, and a water return port 303 of the second evaporator 1132 is connected with a water return pipeline a of the air conditioning system;
the single water-water heat pump type compression circuit comprises a first compressor 1011, wherein the exhaust port of the first compressor 1011 is connected to a first fluorine pipe b1, the side of the first fluorine pipe b1 is connected with a third valve 1031, the outlet of the third valve 1031 is connected with a second fluorine pipe c1, the second fluorine pipe c1 is connected with the gas port on the fluorine side of the condenser 108, the liquid port on the fluorine side of the condenser 108 is connected with a first throttling mechanism 1121, the first throttling mechanism 1121 is connected with the liquid port on the fluorine side of the evaporator 1131, the gas port on the fluorine side of the evaporator 1131 is connected with a fourth fluorine pipe e1, the fourth fluorine pipe e1 is connected with a fourth valve 1041, the fourth valve 1041 is connected with a third fluorine pipe d1, and the third fluorine pipe d1 is respectively connected with a fifth valve d 851 and the gas suction port of the first compressor 1011.
In the water supplementing constant pressure loop, a constant pressure expansion tank 308 and a sewage discharge/drainage device 307 are connected between the air conditioning system water return pipeline a and the manual water supplementing device 304. An automatic water replenishing device 305 is connected between a water replenishing port 306 in the water replenishing constant pressure loop and a water return pipeline a of the air conditioning system, and the automatic water replenishing device 305 and the manual water replenishing device 304 are arranged in parallel.
A second valve 1021 is connected between the first fluorine line b1 and the fourth fluorine line e 1.
A ninth valve 1052 is connected between the seventh fluorine line d2 and the sixth fluorine line c 2.
The first valve 309, the second valve 1021, the third valve 1031, the fourth valve 1041, the fifth valve 1051, the sixth valve 1022, the seventh valve 1032, the eighth valve 1042, the ninth valve 1052, and the tenth valve 311 are manual valves or electric valves.
The unit system has the following operation modes, and the specific implementation mode is as follows:
evaporative cooling type compression refrigeration operation mode: under this mode, cold water in cold/hot water circulating water return circuit gets into the unit by air conditioning system return water mouth 303, later gets into filter equipment 310 and carries out filtration treatment, and the cold water of handling gets into second evaporimeter 1132 and cools down under circulating water pump 301's effect, and the cold water that is cooled gets into air conditioning system supply water mouth 302 again and gets into air conditioning system, provides the cold source for air conditioning system end equipment, and cold water absorbs indoor heat and then gets into the host computer section through air conditioning system return water mouth 303 once more, so the recirculation. The refrigerant side compression process of the second evaporator 1132 works as an evaporation cooling type compression circuit, and the refrigerant in the second evaporator 1132 absorbs the heat of cold water in the circulating water circuit and is vaporized into low-temperature and low-pressure steam. At this time, the eighth valve 1042 and the seventh valve 1032 are opened, the sixth valve 1022 and the ninth valve 1052 are closed, the low-temperature and low-pressure vapor enters the eighth valve 1042, and then is sucked into the refrigerant vapor by the second compressor 1012, and the refrigerant vapor is compressed to be high-temperature and high-pressure vapor. The high-temperature and high-pressure refrigerant vapor enters the evaporative condenser 202 through the seventh valve 1032. The refrigerant vapor entering the evaporative condenser 202 gives up heat, condensing the refrigerant vapor into a high pressure, low temperature liquid. The high-pressure low-temperature refrigerant liquid after condensation becomes low-pressure low-temperature liquid after throttling through the second throttling mechanism 1122, the low-temperature low-pressure refrigerant liquid enters the second evaporator 1132, heat absorption vaporization is carried out again, and the cooling process of cold water in the second evaporator 1132 is realized by circulating the way.
Evaporative cooling type compression heating operation mode: in this mode, hot water in the cold/hot water circulation water circuit enters the unit through the air conditioning system water return port 303, and then enters the first filtering device 310 for filtering, and the treated hot water enters the second evaporator 1132 for heating under the action of the circulation water pump 301. At the moment, the function of the evaporator is equivalent to that of a compression refrigeration condenser, heated hot water enters the air conditioning system through the water supply port 302 of the air conditioning system again to provide a heat source for end equipment of the air conditioning system, and the hot water enters the main machine section through the water return port 303 of the air conditioning system again after absorbing indoor cold energy and circulates repeatedly. The refrigerant side compression process of the second evaporator 1132 works as an evaporation cooling type compression circuit, and the refrigerant in the second evaporator 1132 absorbs the cold energy of the hot water in the circulating water circuit and is condensed into low-temperature and high-pressure liquid. At this time, the sixth valve 1022 and the ninth valve 1052 are opened, the seventh valve 1032 and the eighth valve 1042 are closed, the low-temperature and high-pressure liquid passes through the second throttling mechanism 1122 and then is changed into low-temperature and low-pressure liquid, and then enters the evaporative condenser 202, the refrigerant in the evaporative condenser 202 absorbs heat (latent heat) in the air through the heat and mass exchange principle, i.e., air energy, and changes the refrigerant into low-pressure and low-temperature vapor, and then the low-pressure and low-temperature vapor is sequentially sucked into the second compressor 1012 through the ninth valve 1052, the low-temperature and low-pressure vapor is compressed into high-temperature and high-pressure vapor by the second compressor 1012 and then is discharged, and the high-temperature and high-pressure vapor passes through the sixth valve 1022 and enters the second evaporator 1132 to release heat, and the circulation is performed, so that the hot water in the second evaporator 1132 is heated.
The water-water heat pump type compression refrigeration running mode comprises the following steps: in the mode, cold water of a cold/hot water circulating water loop enters the unit from the air conditioning system water return port 303, then enters the first filtering device 310 for filtering treatment, the treated cold water enters the evaporator 113 for cooling under the action of the circulating water pump 301, the cooled cold water enters the air conditioning system water supply port 302 again to enter the air conditioning system, a cold source is provided for the tail end equipment of the air conditioning system, and the cold water enters the host section through the air conditioning system water return port 303 again after absorbing indoor heat, and the process is repeated. The refrigerant side compression process of the first evaporator 1131 works as a water-water heat pump type compression circuit, and the refrigerant in the first evaporator 1131 absorbs the heat of cold water in the circulating water circuit and is vaporized into low-temperature and low-pressure steam. At this time, the fourth valve 1041 and the third valve 1031 are opened, the second valve 1021 and the fifth valve 1051 are closed, and the low-temperature and low-pressure vapor enters the fourth valve 1041, and is sucked into the refrigerant vapor by the first compressor 1011, and the refrigerant vapor is compressed to become high-temperature and high-pressure vapor. The high-temperature and high-pressure refrigerant vapor enters the condenser 108 through the third valve 1031. The refrigerant vapor entering the condenser 108 gives off heat, condensing the refrigerant vapor into a high pressure, low temperature liquid. The condensed high-pressure low-temperature refrigerant liquid is throttled by the first throttling mechanism 1121 and then becomes low-pressure low-temperature liquid, the low-temperature low-pressure refrigerant liquid enters the first evaporator 1131, heat absorption vaporization is performed again, and the circulation is performed, so that the cooling process of cold water in the first evaporator 1131 is realized. And under the action of the cooling water pump 401, cooling water is pumped into the condenser 108 on the other side of the condenser 108 to absorb heat of the refrigerant, the heated cooling water enters the ground through the water outlet 404 on the water/ground source side to release heat, the heat is stored in the ground, the cooling water cooled by the heat release enters the water/ground source water inlet again, then the cooling water is filtered by the filter device 401, the filtered cooling water is sucked into the cooling water pump 402 and then is pumped into the condenser 108 under the action of the cooling water pump 402, and the process of condensing the refrigerant in the condenser 108 is realized by circulating the above steps.
The water-water heat pump type compression heating operation mode comprises the following steps: in this mode, hot water in the cold/hot water circulation water circuit enters the unit through the air conditioning system water return port 303, and then enters the first filtering device 310 for filtering treatment, and the treated hot water enters the first evaporator 1131 for heating under the action of the circulation water pump 301. At the moment, the function of the evaporator is equivalent to that of a compression refrigeration condenser, heated hot water enters the air conditioning system through the water supply port 302 of the air conditioning system again to provide a heat source for end equipment of the air conditioning system, and the hot water enters the main machine section through the water return port 303 of the air conditioning system again after absorbing indoor cold energy and circulates repeatedly. The refrigerant side of the first evaporator 1131 is compressed by a water-water heat pump type compression circuit, and the refrigerant in the first evaporator 1131 absorbs the cold of the hot water in the circulating water circuit and is condensed into a low-temperature high-pressure liquid. At this time, the second valve 1021 and the fifth valve 1051 are opened, the third valve 1031 and the fourth valve 1041 are closed, the low-temperature and high-pressure liquid passes through the first throttling mechanism 1121 to become low-temperature and low-pressure liquid, and then enters the condenser 108, the refrigerant in the condenser 108 is vaporized and releases heat to become low-pressure and low-temperature vapor by absorbing heat in the cooling water, then the low-pressure and low-temperature vapor is sucked into the first compressor 1011 through the fifth valve 1051 in sequence, the first compressor 1011 compresses the low-temperature and low-pressure vapor into high-temperature and high-pressure vapor, and then the high-temperature and high-pressure vapor is discharged, and the high-temperature and high-pressure vapor enters the first evaporator 1131 through the second valve 1021 to release heat, so that the hot water in the first evaporator 1131 is heated. And under the action of the cooling water pump 401, the cooling water is pumped into the condenser 108 on the other side of the condenser 108 to absorb the cold energy of the refrigerant, the cooled cooling water enters the ground through the water outlet 404 on the water/ground source side to absorb heat, the cold energy is stored in the ground, the cooling water heated by absorbing heat enters the water/ground source water inlet again, then the cooling water is filtered by the filter device 402, the filtered cooling water is sucked into the cooling water pump 402 and then is pumped into the condenser 108 under the action of the cooling water pump 402, and the circulation is carried out, so that the evaporation process of the refrigerant in the condenser 108 is realized.
The water-water heat pump type compression loop is an independent compression loop, and the evaporative cooling type compression loop is an independent compression loop; because the evaporative cooling type compression loop and the water-water heat pump type compression loop are independently designed, the unit can flexibly match the proportion of two compression refrigeration/heating systems and simultaneously operate according to the requirement, thereby more effectively reducing the manufacturing cost of the unit, having more diversified operation and lower annual operation cost in individual areas. The shared system further reduces the unit cost and the unit floor area.
In this embodiment, the compressor 101 is divided into the compressor 1011 and the compressor 1012, the evaporator 113 is divided into the evaporator 1131 and the evaporator 1132, the valve 102 is divided into the valve 1021 and the valve 1022, the valve 103 is divided into the valve 1031 and the valve 1032, the valve 104 is divided into the valve 1041 and the valve 1042, the valve 105 is divided into the valve 1051 and the valve 1052, the pipe b is divided into the pipe b1 and the pipe b2, the pipe d is divided into the pipes d1 and d2, the pipe e is divided into the pipe e1 and the pipe e2, the valve 107, the valve 201, the valve 203 and the valve 111 are eliminated, and the valve 307 and the valve 308 are added. Specifically, example 2 differs from example 1 in that:
the compressor 101 in the aforementioned water-water heat pump type compression circuit is replaced by a compressor 1011 and the evaporator 113 is replaced by an evaporator 1131, the valve 102 is replaced by a valve 1021, the valve 103 is replaced by a valve 1031, the valve 104 is replaced by a valve 1041, the valve 105 is replaced by 1051, the pipe b is replaced by a pipe b1, the pipe d is replaced by a pipe d1, the pipe e is replaced by a pipe e1, and the throttling device 112 is replaced by a throttling device 1121 to form an independent water-water heat pump type compression circuit.
The compressor 101 in the aforesaid evaporative cooling compression circuit is replaced by compressor 1012 and the evaporator 113 is replaced by evaporator 1132, the valve 102 is replaced by valve 1022, the valve 103 is replaced by valve 1032, the valve 104 is replaced by valve 1042, the valve 105 is replaced by 1052, the conduit b is replaced by conduit b2, conduit d is replaced by conduit d2, conduit e is replaced by conduit e2, the throttling device 112 is replaced by throttling device 1122 to form an independent evaporative cooling compression circuit.
The connection between the circulating water pump 301 and the air conditioning system water supply inlet 302 in the aforementioned cold/hot water circulating water loop is divided into 2 loops, in the loop 1, the circulating water pump 301 is connected to the evaporator 1131, the evaporator is connected to the valve 308, and the valve 308 is connected to the air conditioning system water supply inlet 302. In addition, in the loop 2, the circulating water pump 301 is connected to an evaporator 1132, the evaporator is connected to a valve 307, and the valve 307 is connected to an air conditioning system water supply inlet 302.
Example 3
A composite dual compressor single circuit refrigeration or heating unit system of the present embodiment, as shown in fig. 3, includes: a cold/hot water circulating water loop, an independent evaporative cooling type compression loop, an independent water-water heat pump type compression loop, a heat source side circulating water loop and a water supplementing constant pressure loop.
The cold/hot water circulating water loop comprises a circulating water pump 301, one side of a water outlet of the circulating water pump is connected to a water inlet of a first evaporator 1131, a water outlet of the first evaporator 1131 is connected to a water supply port 302 of the air conditioning system through a first valve 309, the other side of the circulating water pump is connected to a first filtering device 310, the first filtering device 310 is connected to a water return port 303 of the air conditioning system through a water return pipeline (a) of the air conditioning system, and a water supplementing constant pressure loop is further connected to the water return pipeline a of the air conditioning system;
the water supplementing constant-pressure loop comprises a manual water supplementing device 304, a water inlet of the manual water supplementing device is connected to a water supplementing port 306 of the air conditioning system, and a water outlet of the manual water supplementing device is connected to a water returning pipeline a of the air conditioning system;
the heat source side circulating water loop comprises a cooling water pump 401, the outlet of the cooling water pump 401 is connected to the water inlet of a condenser 108, the water outlet of the condenser 108 is connected to a heat source water outlet 404, the suction inlet of the cooling water pump 401 is connected to a second filtering device 402, and the second filtering device 402 is connected to a heat source side water inlet 403;
the single evaporative cooling type compression circuit includes a second compressor 1012, a gas outlet of the second compressor 1012 is connected to a fifth fluorine line c, the fifth fluorine line c is connected to a gas inlet on the fluorine side of the evaporative condenser 202, a liquid inlet on the fluorine side of the evaporative condenser 202 is connected to a second throttling mechanism 1122, the throttling mechanism is connected to a liquid inlet on the fluorine side of a second evaporator 1132, a gas inlet on the fluorine side of the second evaporator 1132 is connected to a gas inlet on the fluorine side of the second compressor 1012, a water supply port 302 of the second evaporator 1132 is connected to a water supply line f of an air conditioning system through a tenth valve 311, and a water return port 303 of the second evaporator 1132 is connected to a water return line a of the air conditioning system;
the single water-water heat pump type compression circuit comprises a compressor 1011, wherein the exhaust port of the first compressor 1011 is connected to a first fluorine pipe b1, the side of a first fluorine pipe b1 is connected with a third valve 1031, the outlet of the third valve 1031 is connected with a second fluorine pipe c1, the second fluorine pipe c1 is connected with the gas port on the fluorine side of the condenser 108, the liquid port on the fluorine side of the condenser 108 is connected with a first throttling mechanism 1121, the first throttling mechanism 1121 is connected with the liquid port on the fluorine side of a first evaporator 1131, the gas port on the fluorine side of the first evaporator 1131 is connected with a fourth fluorine pipe e1, the fourth fluorine pipe e1 is connected with a fourth valve 1041, the fourth valve 1041 is connected with a third fluorine pipe d1, and the third fluorine pipe d1 is respectively connected with a fifth valve 1051 and the suction port of the first compressor 1011.
In the water supplementing constant pressure loop, a constant pressure expansion tank 308 and a sewage discharge/drainage device 307 are connected between the air conditioning system water return pipeline a and the manual water supplementing device 304. An automatic water replenishing device 305 is connected between a water replenishing port 306 in the water replenishing constant pressure loop and a water return pipeline a of the air conditioning system, and the automatic water replenishing device 305 and the manual water replenishing device 304 are arranged in parallel.
A second valve 1021 is connected between the first fluorine line b1 and the fourth fluorine line e 1.
The first valve 309, the second valve 1021, the third valve 1031, the fourth valve 1041, the fifth valve 1051, and the tenth valve 311 are manual valves or electric valves.
The unit system has the following operation modes, and the specific implementation mode is as follows:
evaporative cooling type compression refrigeration operation mode: under this mode, cold water in cold/hot water circulating water return circuit gets into the unit by air conditioning system return water mouth 303, later gets into filter equipment 310 and carries out filtration treatment, and the cold water of handling gets into second evaporimeter 1132 and cools down under circulating water pump 301's effect, and the cold water that is cooled gets into air conditioning system supply water mouth 302 again and gets into air conditioning system, provides the cold source for air conditioning system end equipment, and cold water absorbs indoor heat and then gets into the host computer section through air conditioning system return water mouth 303 once more, so the recirculation. The refrigerant side compression process of the second evaporator 1132 works as an evaporation cooling type compression circuit, and the refrigerant in the second evaporator 1132 absorbs the heat of cold water in the circulating water circuit and is vaporized into low-temperature and low-pressure steam. At this time, the second compressor 1012 sucks the refrigerant vapor, and after compression, the refrigerant vapor is changed into high-temperature and high-pressure vapor. The high-temperature and high-pressure refrigerant vapor enters the evaporative condenser 202 through the fifth fluorine line c. The refrigerant vapor entering the evaporative condenser 202 gives up heat, condensing the refrigerant vapor into a high pressure, low temperature liquid. The high-pressure low-temperature refrigerant liquid after condensation becomes low-pressure low-temperature liquid after throttling by the throttling mechanism 1122, the low-temperature low-pressure refrigerant liquid enters the second evaporator 1132, heat absorption vaporization is performed again, and the cooling process of cold water in the second evaporator 1132 is realized by circulation.
Evaporative cooling type compression heating operation mode: in this mode, hot water in the cold/hot water circulation water circuit enters the unit through the air conditioning system water return port 303, and then enters the first filtering device 310 for filtering, and the treated hot water enters the second evaporator 1132 for heating under the action of the circulation water pump 301. At the moment, the function of the evaporator is equivalent to that of a compression refrigeration condenser, heated hot water enters the air conditioning system through the water supply port 302 of the air conditioning system again to provide a heat source for end equipment of the air conditioning system, and the hot water enters the main machine section through the water return port 303 of the air conditioning system again after absorbing indoor cold energy and circulates repeatedly. The refrigerant side compression process of the second evaporator 1132 works as an evaporation cooling type compression circuit, and the refrigerant in the second evaporator 1132 absorbs the cold energy of the hot water in the circulating water circuit and is condensed into low-temperature high-pressure steam. At this time, the low-temperature and high-pressure liquid passes through the throttling mechanism 1122 and then becomes low-temperature and low-pressure liquid, and enters the evaporative condenser 202, the refrigerant in the evaporative condenser 202 absorbs heat (latent heat) in the air, i.e., air energy, through the heat and mass exchange principle, the refrigerant becomes low-pressure and low-temperature vapor, then the low-pressure and low-temperature vapor is sequentially sucked into the second compressor 1012, the second compressor 1012 compresses the low-temperature and low-pressure vapor into high-temperature and high-pressure vapor, and the high-temperature and high-pressure vapor enters the second evaporator 1132 to release heat, and the circulation is performed, so that the heating process of the hot water in the second evaporator 1132 is realized.
The water-water heat pump type compression refrigeration running mode comprises the following steps: in the mode, cold water of a cold/hot water circulating water loop enters the unit from the air conditioning system water return port 303, then enters the first filtering device 310 for filtering treatment, the treated cold water enters the evaporator 113 for cooling under the action of the circulating water pump 301, the cooled cold water enters the air conditioning system water supply port 302 again to enter the air conditioning system, a cold source is provided for the tail end equipment of the air conditioning system, and the cold water enters the host section through the air conditioning system water return port 303 again after absorbing indoor heat, and the process is repeated. The refrigerant side compression process of the first evaporator 1131 works as a water-water heat pump type compression circuit, and the refrigerant in the first evaporator 1131 absorbs the heat of cold water in the circulating water circuit and is vaporized into low-temperature and low-pressure steam. At this time, the fourth valve 1041 and the third valve 1031 are opened, the second valve 1021 and the fifth valve 1051 are closed, and the low-temperature and low-pressure vapor enters the fourth valve 1041, and is sucked into the refrigerant vapor by the first compressor 1011, and the refrigerant vapor is compressed to become high-temperature and high-pressure vapor. The high-temperature and high-pressure refrigerant vapor enters the condenser 108 through the third valve 1031. The refrigerant vapor entering the condenser 108 gives off heat, condensing the refrigerant vapor into a high pressure, low temperature liquid. The condensed high-pressure low-temperature refrigerant liquid is throttled by the first throttling mechanism 1121 and then becomes low-pressure low-temperature liquid, the low-temperature low-pressure refrigerant liquid enters the first evaporator 1131, heat absorption vaporization is performed again, and the circulation is performed, so that the cooling process of cold water in the first evaporator 1131 is realized. And under the action of the cooling water pump 401, cooling water is pumped into the condenser 108 on the other side of the condenser 108 to absorb heat of the refrigerant, the heated cooling water enters the ground through the water outlet 404 on the water/ground source side to release heat, the heat is stored in the ground, the cooling water cooled by the heat release enters the water/ground source water inlet again, then the cooling water is filtered by the filter device 401, the filtered cooling water is sucked into the cooling water pump 402 and then is pumped into the condenser 108 under the action of the cooling water pump 402, and the process of condensing the refrigerant in the condenser 108 is realized by circulating the above steps.
The water-water heat pump type compression heating operation mode comprises the following steps: in this mode, hot water in the cold/hot water circulation water circuit enters the unit through the air conditioning system water return port 303, and then enters the first filtering device 310 for filtering treatment, and the treated hot water enters the first evaporator 1131 for heating under the action of the circulation water pump 301. At the moment, the function of the evaporator is equivalent to that of a compression refrigeration condenser, heated hot water enters the air conditioning system through the water supply port 302 of the air conditioning system again to provide a heat source for end equipment of the air conditioning system, and the hot water enters the main machine section through the water return port 303 of the air conditioning system again after absorbing indoor cold energy and circulates repeatedly. The refrigerant side of the first evaporator 1131 is compressed by a water-water heat pump type compression circuit, and the refrigerant in the first evaporator 1131 absorbs the cold of the hot water in the circulating water circuit and is condensed into a low-temperature high-pressure liquid. At this time, the second valve 1021 and the fifth valve 1051 are opened, the third valve 1031 and the fourth valve 1041 are closed, the low-temperature and high-pressure liquid passes through the first throttling mechanism 1121 to become low-temperature and low-pressure liquid, and then enters the condenser 108, the refrigerant in the condenser 108 is vaporized and releases heat to become low-pressure and low-temperature vapor by absorbing heat in the cooling water, then the low-pressure and low-temperature vapor is sucked into the first compressor 1011 through the fifth valve 1051 in sequence, the first compressor 1011 compresses the low-temperature and low-pressure vapor into high-temperature and high-pressure vapor, and then the high-temperature and high-pressure vapor is discharged, and the high-temperature and high-pressure vapor enters the first evaporator 1131 through the second valve 1021 to release heat, so that the hot water in the first evaporator 1131 is heated. And under the action of the cooling water pump 401, the cooling water is pumped into the condenser 108 on the other side of the condenser 108 to absorb the cold energy of the refrigerant, the cooled cooling water enters the ground through the water outlet 404 on the water/ground source side to absorb heat, the cold energy is stored in the ground, the cooling water heated by absorbing heat enters the water/ground source water inlet again, then the cooling water is filtered by the filter device 402, the filtered cooling water is sucked into the cooling water pump 402 and then is pumped into the condenser 108 under the action of the cooling water pump 402, and the circulation is carried out, so that the evaporation process of the refrigerant in the condenser 108 is realized.
In this embodiment 3, the valves 1042, 1052, 1032 and 1022 are eliminated, and specifically, the embodiment 3 is different from the embodiment 2 in that: the discharge side of the compressor 1012 in the above-described evaporative cooling type compression system is connected to an evaporator 1132 to form a circuit.
The embodiment is different from the embodiment 2 in that the evaporative cooling type compression system is simplified, and the evaporative cooling type compression heating operation mode is cancelled, so that the system of the unit is simpler, the unit manufacturing cost is lower, and the evaporative cooling technology is only used for supplementing cold to the air conditioning system in summer.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (3)

1. A compound refrigeration or heating unit system, comprising:
the cold/hot water circulating water loop comprises a circulating water pump (301), one side of a water outlet of the circulating water pump (301) is connected to a water inlet of an evaporator (113), a water outlet of the evaporator (113) is connected to a water supply port (302) of an air conditioning system, and the inlet side of the circulating water pump (301) is connected to a water return port (303) of the air conditioning system through a pipeline a;
the heat source side water circulation loop comprises a cooling water pump (401), wherein the outlet of the cooling water pump (401) is connected to the water inlet of a condenser (108), the water outlet of the condenser (108) is connected to a heat source side water outlet (404), the suction inlet of the cooling water pump (401) is connected to a filtering device (402), and the filtering device (402) is connected to a heat source side water inlet;
an evaporative cooling type compression circuit comprises a compressor (101), wherein an exhaust port of the compressor (101) is connected to a fluorine pipeline b, one side of the fluorine pipeline b is connected with a third valve (103), an outlet of the third valve (103) is connected to a fluorine pipeline c, the fluorine pipeline c is connected to a first valve (201), the first valve (201) is connected to a fluorine side air port of an evaporative condenser (202), a fluorine side liquid port of the evaporative condenser (202) is connected to a sixth valve (203), the sixth valve (203) is connected to a throttling mechanism (112), the throttling mechanism is connected to a liquid port on a fluorine side of an evaporator (113), an air port on the fluorine side of the evaporator (113) is connected to a fluorine pipeline e, the fluorine pipeline e is connected to a fourth valve (104), the fourth valve (104) is connected to a fluorine pipeline d, and the fluorine pipeline d is connected to an air suction port of the compressor (101);
a second valve (102) is arranged between the fluorine pipeline b and the fluorine pipeline e; a fifth valve (105) is arranged between the fluorine pipeline d and the fluorine pipeline c;
a water-water heat pump type compression circuit, which comprises a compressor (101), wherein an exhaust port of the compressor (101) is connected to a fluorine pipeline b, one side of the fluorine pipeline b is connected with a third valve (103), an outlet of the third valve (103) is connected to a fluorine pipeline c, the fluorine pipeline c is connected to a seventh valve (107), the seventh valve (107) is connected to a fluorine side air port of a condenser (108), a fluorine side liquid port of the condenser (108) is connected to an eighth valve (111), the eighth valve (111) is connected to a throttling mechanism (112), the throttling mechanism (112) is connected to a liquid port on the fluorine side of an evaporator (113), an air port on the fluorine side of the evaporator (113) is connected to a fluorine pipeline e, the fluorine pipeline e is connected to a fourth valve (104), the fourth valve (104) is connected to a fluorine pipeline d, and the fluorine pipeline d is connected to an air suction port of the compressor (101);
the unit system has the following operation modes:
evaporative cooling type compression refrigeration operation mode: the refrigerant side compression process of the evaporator (113) is that an evaporation cooling type compression circuit works, a fourth valve (104), a third valve (103), a first valve (201) and a sixth valve (203) are opened, a second valve (102), a fifth valve (105), an eighth valve (111) and a seventh valve (107) are closed, and the cooling process of cold water in the evaporator (113) is realized;
evaporative cooling type compression heating operation mode: the refrigerant side compression process of the evaporator (113) is that the evaporation cooling type compression circuit works, the second valve (102), the fifth valve (105), the first valve (201) and the sixth valve (203) are opened, the third valve (103), the fourth valve (104), the eighth valve (111) and the seventh valve (107) are closed, and the heating process of hot water in the evaporator (113) is realized;
the water-water heat pump type compression refrigeration running mode comprises the following steps: the refrigerant side compression process of the evaporator (113) is that a water-water heat pump type compression circuit works, a fourth valve (104), a third valve (103), a seventh valve (107) and an eighth valve (111) are opened, a second valve (102), a fifth valve (105), a first valve (201) and a third valve (203) are closed, and the condensation process of the refrigerant in the condenser (108) is realized;
the water-water heat pump type compression heating operation mode comprises the following steps: the refrigerant side compression process of the evaporator (113) is that a water-water heat pump type compression circuit works, the second valve (102), the fifth valve (105), the seventh valve (107) and the eighth valve (111) are opened, the third valve (103), the fourth valve (104), the third valve (203) and the first valve (201) are closed, and the evaporation process of the refrigerant in the condenser (108) is realized.
2. The compound refrigeration or heating unit system as claimed in claim 1, wherein a water-replenishing constant-pressure circuit is connected to the pipeline a of said cold/hot water circulating water circuit.
3. The compound refrigeration or heating unit system according to claim 2, wherein the water charging constant pressure circuit comprises a water charging port and a manual water charging device or an automatic water charging device communicated with the water charging port, and is constant pressure by the expansion tank.
CN202011053177.XA 2020-09-29 2020-09-29 Combined type refrigeration or heating unit system Active CN112710104B (en)

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CN113446681B (en) * 2021-06-07 2022-09-16 江苏大学 Ground source heat pump composite system for buildings in cold regions and control method thereof
CN113776212A (en) * 2021-08-28 2021-12-10 程霞 Ammonia refrigeration compressor unit with condensate purification and proportioning structure

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