CN111473662A - Self-spraying water curtain type evaporative cooling heat exchanger and heat pump module unit - Google Patents

Self-spraying water curtain type evaporative cooling heat exchanger and heat pump module unit Download PDF

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Publication number
CN111473662A
CN111473662A CN202010401526.6A CN202010401526A CN111473662A CN 111473662 A CN111473662 A CN 111473662A CN 202010401526 A CN202010401526 A CN 202010401526A CN 111473662 A CN111473662 A CN 111473662A
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CN
China
Prior art keywords
water
heat exchange
cooling
refrigerant
pipe
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Pending
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CN202010401526.6A
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Chinese (zh)
Inventor
李国斌
李一杰
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Hanrun United High Tech Development Beijing Co ltd
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Hanrun United High Tech Development Beijing Co ltd
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Priority to CN202010401526.6A priority Critical patent/CN111473662A/en
Publication of CN111473662A publication Critical patent/CN111473662A/en
Priority to PCT/CN2021/093093 priority patent/WO2021228096A1/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D5/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
    • F28D5/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/40Fluid line arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00Details of evaporators; Details of condensers
    • F25B2339/04Details of condensers
    • F25B2339/047Water-cooled condensers

Abstract

The invention relates to a self-spraying water curtain type evaporative cooling heat exchanger and a heat pump module unit, wherein the evaporative cooling heat exchanger comprises a plurality of heat exchange plates; the heat exchange plate comprises a heat exchange unit; the heat exchange unit is in a plate-shaped structure, has continuity and is in a concave-convex shape; the heat exchange unit comprises a cooling pipe and a water distribution tank; both sides of the water distribution groove are provided with water distribution microporous plates; the water distribution microporous plate is connected with the pipe walls of the cooling pipe and the condensing pipe; the evaporation heat transfer surface outside still is connected with prevents flying water net, prevents flying water net and lays on evaporation heat transfer plate surface to be connected with every condenser pipe horizontal segment, prevent flying water net's top and bottom and the corresponding top and the horizontal segment pipe wall connection of downside condenser pipe. The heat pump module unit comprises the self-spraying water curtain type evaporative cooling heat exchanger. The self-spraying water curtain type evaporative cooling heat exchanger and the heat pump module unit have the advantages of high heat exchange efficiency, water saving and convenience in maintenance; not only can refrigerate, but also can heat; the volume is small, and the stability is high; the construction is easy; the noise is low, and the use cost is reduced.

Description

Self-spraying water curtain type evaporative cooling heat exchanger and heat pump module unit
Technical Field
The invention relates to the field of heat pump units, in particular to a self-spraying water curtain type evaporative cooling heat exchanger and a heat pump module unit.
Background
The water cooling water chilling unit has a remarkable energy-saving effect compared with an air cooling water chilling unit, so that the water cooling water chilling unit has a higher market share as a first choice in the field of refrigeration and air conditioning. However, the water-cooling water chilling unit generally adopts a screw compressor or a centrifugal compressor, and the refrigerating capacity of a single unit is less, namely hundreds of kilowatts and more, namely thousands of kilowatts, so that the unit has high power and large size, is inconvenient to transport, install and maintain, and has the biggest defect that the heating function cannot be realized.
Although the water-cooling water chiller has certain advantages over the air-cooling water chiller, the following defects still exist:
1. the water-cooling water chilling unit needs a specific machine room, and the waste of the effective utilization area of the building main body is caused by that the occupied area of the main machine is small, and the number of the main machine is more than hundreds of square meters. At present, land resources are tense, real estate regulation and control are stricter, and the method has important significance in reducing the land use area and improving the building utilization rate; in engineering practice, some newly-built and reconstructed buildings cannot install a refrigeration main machine indoors due to indoor space limitation caused by various reasons, but the alternative scheme of adopting the air-cooled water cooling unit can cause the operating cost of the air conditioner to be greatly increased.
2. The cooling tower in the water-cooling water chilling unit is separated from the refrigeration main machine, so that the construction amount and the construction cost are increased due to the overlong cooling circulation pipe network. The machine room of the water-cooled chiller is generally arranged in the underground part of the building main body, and the cooling tower is arranged on the roof of the building main body. The cooling water supply and return network in the machine room has the advantages of large construction difficulty, strong requirement on construction professional degree and higher overall construction cost of the air conditioning project.
3. And a cooling circulating pump in the water-cooling water chilling unit has high power consumption. Because the height difference between the refrigeration main machine and the cooling tower is large, the lift of the cooling circulating pump is increased under the condition of fixed flow, the power of the cooling circulating pump is improved, and the energy consumption is correspondingly increased. In addition, the existing water-cooling water chilling unit mostly adopts a shell-and-tube heat exchanger, and the shell pass is short, so the required flow rate is high, the pressure difference of a fluid inlet and a fluid outlet is large, the fluid resistance in the shell is greatly increased, the power of a cooling circulating pump is increased, and the energy consumption is increased.
4. The water-cooling water chilling unit generally adopts a high-power screw compressor (the single machine consumes more than 100 KW) or a centrifugal compressor (the single machine consumes more than 200KW-1000 KW), and if the weight of the unit is less, one or two tons of the unit weigh several tons, so that the water-cooling water chilling unit is difficult to transport and high in installation difficulty.
5. The stability of the water-cooled chiller is poor. Because the price of a single machine of the large water-cooling water chilling unit is high, a double-machine-head compressor is adopted for improving the operation stability, so that potential safety hazards exist in the whole refrigeration operation, and the refrigeration main machine is not available when in failure, so that the use is influenced.
6. The water-cooling water chilling unit is not easy to maintain and has high maintenance cost.
7. The traditional water-cooling water chilling unit adopts a shell-and-tube heat exchanger, the wall-type heat exchange between the refrigerant and the cooling medium (water) is carried out in a closed shell tube, the cooling water absorbs the condensation heat of the refrigerant in a sensible heat mode, and the heat exchange efficiency is not high.
8. The cooling tower of the water-cooling water chilling unit has serious water splashing, which causes water resource waste; the cooling water is in convection with air in a counter-flow manner in the downward spraying process through the water distributor, so that a serious water flying phenomenon can be generated, and drifting water drops are discharged into the atmosphere along with the fan, so that the idle waste of the cooling water is caused.
9. The noise pollution of the water-cooling water chilling unit is serious. Because the refrigeration host machine adopts a high-power screw or a centrifugal compressor, mechanical friction vibration can be generated when the unit operates, and the noise pollution of an indoor refrigeration machine room is serious; in addition, the fan and the cooling spray can also generate noise pollution during the operation of the outdoor cooling tower; and reducing these noise pollution requires additional construction investment.
10. The water-cooled chiller does not have a heating function. The traditional water-cooling water chilling unit adopts water as a cooling medium to cool refrigerant steam, and the heated cooling water transfers heat to ambient air through a cooling tower arranged outdoors; the refrigeration and heat transfer process comprises the following steps: refrigerant → water → air. When heating, the heat transfer process is opposite: refrigerant ← water ← air. Since the heating operation is performed in winter, it is obvious that the cooling tower cannot realize reverse heat transfer when the cooling water is lower than' 0 ℃.
Based on the above disadvantages, how to develop a small modular unit which has small volume, light weight, high refrigeration efficiency, water saving, low noise, convenient transportation and installation and can realize the heating function becomes the key point of research and development of workers in the technical field at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a self-spraying water curtain type evaporative cooling heat exchanger and a heat pump module unit, wherein the adopted evaporative cooling heat exchanger has high heat exchange efficiency, saves water and is convenient to maintain; the heat pump module unit can not only refrigerate, but also heat; the volume is small, and the stability is high; the construction is easy; the noise is low, and the use cost is reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: a self-spray water curtain type evaporative cooling heat exchanger comprises a plurality of heat exchange plates; the plurality of heat exchange plates are arranged at intervals along the direction vertical to the evaporation heat exchange surface; each heat exchange plate comprises at least one heat exchange unit; the heat exchange unit is a plate-shaped structure formed by vertically arranging a plurality of horizontal sections of the condensing tubes, two ends of the horizontal sections of the condensing tubes are connected through bent sections of the condensing tubes to form at least one refrigerant condensing channel, two surfaces of the plate-shaped structure form evaporation heat exchange surfaces, and the horizontal sections of two adjacent condensing tubes are connected without gaps, so that the evaporation heat exchange surfaces are continuous and in a concave-convex shape; a cooling pipe is also arranged above the horizontal section of the uppermost condensing pipe; a water distribution groove is also arranged between the cooling pipe and the horizontal section of the uppermost condensing pipe; both sides of the water distribution tank are provided with water distribution microporous plates; the upper end of the water distribution microporous plate is connected with the pipe wall of the cooling pipe, and the lower end of the water distribution microporous plate is connected with the pipe wall of the horizontal section of the uppermost condensing pipe, so that the water distribution tank is fixed between the cooling pipe and the heat exchange unit in an embedded manner to form an integral structure; the cooling pipe is provided with a plurality of rows of water outlet holes which are communicated with the water distribution tank and used for uniformly injecting water into the water distribution tank; the water distribution groove is used for uniformly distributing water injected by the cooling pipe on the evaporation heat exchange plate surface through the water distribution microporous plate to form a water curtain; the outer side of the evaporation heat exchange surface is also connected with an anti-flying water net which is laid on the surface of the evaporation heat exchange plate and is connected with the horizontal section of each condensing tube, the top end of the anti-flying water net is connected with the tube wall of the horizontal section of the uppermost condensing tube, and the bottom end of the anti-flying water net is connected with the tube wall of the horizontal section of the lowermost condensing tube, so that the water distribution microporous plate and the anti-flying water net form a complete plate surface.
Further, the heat exchange plate comprises a plurality of heat exchange units; a plurality of heat transfer units are vertically arranged, and two adjacent heat transfer units are connected through the condenser pipe section of bending, make respective refrigerant condensation channel correspond the intercommunication.
Furthermore, the top of the cooling pipe in the heat exchange unit at the lower side in the two adjacent heat exchange units is connected with the bottom of the horizontal section of the condensation pipe at the lowest side of the heat exchange unit at the upper side.
Furthermore, the bottom end of the anti-splashing net of each heat exchange unit is replaced by a pipe wall connected with the adjacent cooling pipe of the heat exchange unit positioned on the lower side.
Furthermore, in two adjacent heat exchange units, the number of horizontal sections of the condensing tubes in the heat exchange unit positioned on the lower side is smaller than that of the horizontal sections of the condensing tubes in the heat exchange unit positioned on the upper side, so that the heat exchange areas of the evaporation heat exchange surfaces of the plurality of heat exchange units are gradually reduced from top to bottom; the quantity of the water outlets of the cooling pipes in the heat exchange unit on the lower side is smaller than that of the water outlets of the cooling pipes on the upper side (the distance between the water outlets along the length direction of the cooling pipes is increased), and the water distribution requirement of the evaporation heat exchange surface corresponding to the heat exchange area is met.
Further, the connection mode of the cooling pipe, the water distribution groove and the water distribution microporous plate between two adjacent heat exchange units is replaced by: a water distribution groove is arranged above the cooling pipe, water distribution micro-porous plates are arranged on two sides of the water distribution groove, the lower ends of the water distribution micro-porous plates are connected with the pipe wall of the cooling pipe, and the upper ends of the water distribution micro-porous plates are connected with the pipe wall of the horizontal section of the lowest condenser pipe of the heat exchange unit positioned on the upper side; the bottom of the cooling pipe is connected with the top of the horizontal section of the uppermost condensing pipe in the heat exchange unit; correspondingly, in the heat exchange unit positioned on the lower side, the top end of the anti-splashing net is replaced by being connected with the pipe wall of the cooling pipe of the heat exchange unit, and the bottom end of the anti-splashing net is replaced by being connected with the pipe wall of the horizontal section of the lowest condensing pipe of the heat exchange unit.
A self-spray water curtain type evaporative cooling heat pump module unit comprises a self-spray water curtain type evaporative cooling heat exchanger, wherein a refrigerant steam inlet is formed in the top end of a refrigerant condensing channel of each heat exchange plate in the evaporative cooling heat exchanger, and a refrigerant liquid outlet is formed in the bottom end of the refrigerant condensing channel; one end of the cooling pipe of the heat exchange plate is provided with a cooling water inlet; refrigerant steam inlets of the plurality of heat exchange plates are connected with a refrigerant steam collecting pipe, refrigerant liquid outlets of the plurality of heat exchange plates are connected with a refrigerant liquid collecting pipe, and cooling water inlets of cooling pipes of the plurality of heat exchange plates are connected with a cooling collecting pipe; the cooling system is characterized in that the refrigerant vapor collecting pipe is also connected with a first refrigerant vapor main pipe, the refrigerant liquid collecting pipe is also connected with a first refrigerant liquid main pipe, and the cooling collecting pipe is also connected with a cooling main pipe.
Further, the heat pump module unit also comprises an air-cooled heat exchanger and a refrigerant operation assembly; the evaporative cooling heat exchanger and the air cooling heat exchanger are connected in parallel and then are connected with the refrigerant operation assembly; the refrigerant operation assembly is used for operating a refrigerant to exchange heat in an evaporative cooling heat exchanger or an air cooling heat exchanger; the air-cooled heat exchanger is connected with a second refrigerant steam main pipe and a second refrigerant liquid main pipe; the first refrigerant steam main pipe and the second refrigerant steam main pipe are connected in parallel and then connected with the refrigerant operation assembly, and the first refrigerant liquid main pipe and the second refrigerant liquid main pipe are connected in parallel and then connected with the refrigerant operation assembly; the first refrigerant steam main pipe is provided with a first electromagnetic valve, and the second refrigerant steam main pipe is provided with a second electromagnetic valve.
Furthermore, the unit also comprises a water tank; a water pump is arranged in the water tank; and the water outlet end of the water pump is communicated with the cooling main pipe and is used for sending cooling water in the water tank into the evaporative cooling heat exchanger through the cooling main pipe.
Further, the water tank is also provided with a water replenishing port; the bottom of the water tank is also connected with a sewage discharge pipe; and a sewage discharge electromagnetic valve is arranged on the sewage discharge pipe.
Furthermore, a cooling filler layer is arranged between the evaporative cooling heat exchanger and the water tank and is used for cooling the unevaporated water dropping from the evaporative cooling heat exchanger and discharging the unevaporated water into the water tank.
Further, the refrigerant operation assembly comprises a compressor, a four-way valve, a first electromagnetic valve, a second electromagnetic valve, a first one-way valve, a liquid storage tank, a drying filter, an economizer, a first expansion valve, a second one-way valve, a gas-liquid separator, a third electromagnetic valve, a second expansion valve, a third one-way valve and a fourth one-way valve; the unit also comprises a multi-connected indoor unit; the compressor is provided with an air outlet, an air return port and an enthalpy increasing port; the four-way valve is provided with an a end, a b end, a c end and a d end; the economizer is provided with an e end, an f end, a g end and an h end, wherein the e end is communicated with the f end in the economizer, and the g end is communicated with the h end in the economizer; the multi-connected indoor unit is provided with a j end and a k end, and the j end and the k end are two ports of a refrigerant channel of the multi-connected indoor unit.
Further, an air outlet of the compressor, an end a and an end b of the four-way valve, a pipeline in which the first refrigerant steam main pipe/the second refrigerant steam main pipe are connected in parallel, a first refrigerant steam main pipe and a first electromagnetic valve of the evaporative cooling heat exchanger, a first one-way valve, a liquid storage tank, a drying filter, an h end and an end g of an economizer, a first expansion valve, a second one-way valve, a j end and an end k of the multi-connected indoor unit, a d end and an end c of the four-way valve, a gas-liquid separator and a return air port of the compressor are communicated to form a first refrigeration operation channel.
Further, an air outlet of the compressor, an end a and an end b of the four-way valve, a pipeline in which the first refrigerant steam main pipe/the second refrigerant steam main pipe are connected in parallel, a second refrigerant steam main pipe and a second electromagnetic valve of the air-cooled heat exchanger and a second refrigerant liquid main pipe, a first one-way valve, a liquid storage tank, a drying filter, an h end and an end g of the economizer, a first expansion valve, a second one-way valve, a j end and an end k of the multi-connected indoor unit, a d end and an end c of the four-way valve, a gas-liquid separator and a gas return port of the compressor are sequentially communicated to form a second refrigeration operation channel.
Further, an air outlet of the compressor, an a end and a d end of the four-way valve, a k end and a j end of the multi-connected indoor unit, a third one-way valve, a liquid storage tank, a drying filter, an h end and a g end of the economizer, a first expansion valve, a fourth one-way valve, a pipeline in which a first refrigerant liquid main pipe/a second refrigerant liquid main pipe are connected in parallel, a first refrigerant liquid main pipe and a first refrigerant steam main pipe of the evaporative cooling heat exchanger, a first electromagnetic valve, a b end and a c end of the four-way valve, a gas-liquid separator and a return air port of the compressor are sequentially communicated to form a first heating operation channel.
Further, an air outlet of the compressor, an a end and a d end of the four-way valve, a k end and a j end of the multi-connected indoor unit, a third one-way valve, a liquid storage tank, a drying filter, an h end and a g end of the economizer, a first expansion valve, a fourth one-way valve, a pipeline in which a first refrigerant liquid main pipe/a second refrigerant liquid main pipe are connected in parallel, a second refrigerant liquid main pipe and a second refrigerant steam main pipe of the air-cooling heat exchanger, a second electromagnetic valve, a b end and a c end of the four-way valve, a gas-liquid separator and a return air port of the compressor are sequentially communicated to form a second heating operation channel.
Furthermore, in the first heating operation channel and the second heating operation channel, an outlet of the drying filter, the second expansion valve, an e end and an f end of the economizer, the third electromagnetic valve and an enthalpy-increasing port of the compressor are sequentially communicated to form an auxiliary enthalpy-increasing loop; and an internal channel between the e end and the f end in the economizer exchanges heat with an internal channel between the h end and the g end.
Furthermore, the unit also comprises a shell, and the top of the shell is provided with a vent; a fan is arranged in the ventilation opening; the evaporative cooling heat exchanger and the cooling filler layer are sequentially arranged below the fan; the air-cooled heat exchanger is arranged on the outer side of the evaporative cooling heat exchanger; the water tank is arranged below the evaporative cooling heat exchanger and the air-cooling heat exchanger, and the side wall of the shell corresponding to the air-cooling heat exchanger is also provided with a ventilation grating; a water-stop sheet is also arranged between the fan and the evaporative cooling heat exchanger; an equipment chamber is also arranged below the water tank in the machine shell; the refrigerant operation assembly is installed in the equipment room, and the equipment room is also internally provided with an electric cabinet for controlling the fan, the water pump, the compressor, the four-way valve, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve.
Furthermore, the unit does not comprise a multi-connected indoor unit, and is connected with the indoor heat exchanger; the indoor heat exchanger comprises an outdoor heat exchanging part and an indoor heat exchanging part; the outdoor heat exchange part is communicated with the indoor heat exchange part through a cold-carrying agent channel; the outdoor heat exchange part also comprises a refrigerant heat exchange channel for exchanging heat with the secondary refrigerant channel; the refrigerant heat exchange channel is provided with an m end and an n end, and the m end and the n end are respectively connected with the refrigerant operation assembly instead of the j end and the k end of the multi-connected indoor unit; the outdoor heat exchanging part is arranged in an equipment room in the unit.
The invention has the advantages that: according to the self-spraying water curtain type evaporative cooling heat exchanger and the heat pump module unit, due to the design of the evaporative cooling heat exchanger, the heat exchange efficiency is high, water is saved, and the maintenance is convenient; the heat pump module unit adopts the design that an air-cooled heat exchanger and an evaporative cooling heat exchanger are connected in parallel, so that the air and the water can be used for refrigerating, and the air and the industrial waste heat and wastewater can be used for heating; the single unit is small in size and convenient to transport and install, and the multi-unit parallel modular installation can replace a traditional large water-cooling water chilling unit, so that the operation stability of the whole air-conditioning system is improved; the unit can be directly installed on the roof of a roof, a special machine room is not needed, the construction amount of installation engineering is reduced, and the construction difficulty is reduced; the noise generated by the whole unit can be controlled below 65Pb, the unit does not need to be subjected to additional noise reduction treatment, and the use cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of an uppermost heat exchange unit of a heat exchange plate of a self-spray water curtain type evaporative cooling heat exchanger according to a first embodiment;
FIG. 2 is a schematic cross-sectional view of two adjacent heat exchange units of a heat exchange plate of a self-spray water curtain type evaporative cooling heat exchanger according to a first embodiment;
FIG. 3 is a schematic view of the internal structure of a heat exchange plate of a self-spraying water curtain type evaporative cooling heat exchanger according to a first embodiment;
FIG. 4 is a schematic perspective view of a self-spraying water curtain type evaporative cooling heat exchanger according to the first embodiment;
fig. 5 is a schematic view of a self-spray water curtain type evaporation cold and heat pump module unit according to the second embodiment;
fig. 6 is a schematic diagram of a refrigerant operation assembly of a self-spraying water curtain type evaporation cold and heat pump module unit according to the second embodiment;
fig. 7 is a schematic view of a self-spray water curtain type evaporation cold and heat pump module unit according to a third embodiment;
fig. 8 is a schematic diagram of a refrigerant operation assembly of a self-spraying water curtain type evaporation cold and heat pump module unit according to a third embodiment.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example one
As shown in fig. 1 to 4, the present embodiment provides a self-spray water curtain type evaporative cooling heat exchanger, which includes a plurality of heat exchange plates; the plurality of heat exchange plates are arranged at intervals along the direction vertical to the evaporation heat exchange surface; each heat exchange plate comprises at least one heat exchange unit; the heat exchange unit is a plate-shaped structure formed by vertically arranging a plurality of condenser pipe horizontal sections 205, two ends of the condenser pipe horizontal sections 205 are connected through condenser pipe bending sections 213 to form at least one refrigerant condensation channel, two surfaces of the plate-shaped structure form evaporation heat exchange surfaces, and two adjacent condenser pipe horizontal sections 205 are connected without gaps, so that the evaporation heat exchange surfaces are continuous and in a concave-convex shape; a cooling pipe 203 is also arranged above the horizontal section 205 of the uppermost condensing pipe; a water distribution groove 201 is also arranged between the cooling pipe 203 and the horizontal section 205 of the uppermost condensing pipe; a water distribution microporous plate 202 is arranged on two sides of the water distribution tank 201; the upper end of the water distribution microporous plate 202 is connected with the pipe wall of the cooling pipe 203, and the lower end is connected with the pipe wall of the horizontal section 205 of the uppermost condensing pipe, so that the water distribution tank 201 is fixed between the cooling pipe 203 and the heat exchange unit in an embedded manner to form an integrated structure; the cooling pipe 203 is provided with a plurality of rows of water outlet holes 204 communicated with the water distribution tank 201 and used for uniformly injecting water into the water distribution tank 201; the water distribution tank 201 is used for uniformly distributing water injected by the cooling pipe 203 on the evaporation heat exchange plate surface through the water distribution microporous plate 202 to form a water curtain; a bracket 206 is also arranged in the water distribution tank 201 between the cooling pipe 203 and the horizontal section 205 of the condensation pipe; the outer side of the evaporation heat exchange surface is also connected with an anti-splashing net 214, the anti-splashing net 214 is laid on the surface of the evaporation heat exchange plate and is connected with each condenser pipe horizontal section 205, the top end of the anti-splashing net 214 is connected with the pipe wall of the uppermost condenser pipe horizontal section 205, and the bottom end of the anti-splashing net 214 is connected with the pipe wall of the lowermost condenser pipe horizontal section 205, so that the water distribution microporous plate 202 and the anti-splashing net 214 form a complete plate surface.
In the self-spraying water curtain type evaporative cooling heat exchanger of the embodiment, the cooling pipes, the adjacent condensing pipes with a certain distance and the water distribution microporous plate vertically tangent to the outer walls of the two adjacent pipes form a water distribution tank. After the cooling water is conveyed to the cooling pipe, as the cooling pipe is provided with a plurality of rows of water outlet holes, the cooling water is uniformly sprayed in the whole water distribution tank. The air pressure in the water distribution tank is equal to the external atmospheric pressure, and the cooling water keeps a pressure equalizing state under the dual actions of gravity and atmospheric pressure; the cooling water can flow down under the self gravity and flow uniformly distributed on the evaporation heat exchange plate surface through the water distribution microporous plate, and a thin layer water curtain (water curtain) from top to bottom is formed. Due to the surface tension of water, cooling water is continuously and directly adhered to the whole evaporation heat exchange plate surface without gaps, and a water film is fully extended, thin and uniform, so that the evaporation efficiency is improved; free water is not generated, and the phenomena of water flying and water floating can be avoided to the maximum extent.
In the self-spraying water curtain type evaporative cooling heat exchanger of the embodiment, the processing mode of the water distribution tank is as follows: the water distribution microporous plate can be directly welded between the arranged cooling outer pipes and the arranged condensing pipes, and the two ends of the water distribution groove in the length direction are sealed by the sealing plates to form an integral structure; the material of the water distribution microporous plate can be copper, aluminum, stainless steel, alloy or other metal materials which are convenient for making a net or opening holes; the water level in the water distribution tank can be controlled by controlling the water inflow of the cooling pipe, so that the supply amount of cooling water is the lowest without surplus under the premise of ensuring sufficient water spraying at the bottom end of the heat exchange unit, and the purpose of accurate water distribution is achieved.
In the self-spraying water curtain type evaporative cooling heat exchanger of the embodiment, the anti-splashing net is a millimeter-scale metal net structure, and is welded and fixed with the horizontal section of the condensing pipe in the contact heat exchange plate surface to form a plane with the water distribution microporous plate; the anti-splashing net is made of metal with good heat conducting performance and is welded and fastened with the condensation pipe into a whole, and an auxiliary evaporation surface is formed when the heat of the refrigerant in the pipe is conducted to the anti-splashing net, so that the heat dissipation and evaporation of cooling water are facilitated; due to the tensile force of the water film on the surface of the anti-splashing net, cooling water can be prevented from being taken away by air flowing reversely, and the waste of the cooling water caused by water floating and water splashing is further avoided; the net structure of the water splashing prevention net matrix arrangement can enable the water distribution on the surface of the heat exchange plate to be more uniform, prolong the retention time of cooling water, increase the heat exchange amount and improve the heat exchange efficiency; the criss-cross net structure of the water splashing prevention net strengthens the disturbance of cooling water, improves the microcirculation of the cooling water and further improves the heat exchange efficiency.
In the self-spraying water curtain type evaporative cooling heat exchanger of the embodiment, the heat exchange unit is formed by folding one or more circular condenser tubes with equal length of Z shape and zero space (forming one or more refrigerant condensing channels); cooling water distribution pipes with the same diameter as the condensing pipes are arranged at the top end and the middle part of the heat exchange fin; the cooling pipe and the condensing pipe keep a small distance (not higher than the diameter of the cooling pipe and the condensing pipe) and are fixed by brazing through a bracket. The whole condensing coil and the cooling pipe are in the same plane. Wherein the adjacent upper and lower layers of condensing tubes and cooling tubes are in seamless connection through brazing; the advantages of a round pipe, such as larger heat exchange area, higher heat transfer coefficient, strong pressure resistance, mature product and low price, are used as a base material, the condensing pipe is folded in a Z shape to form a layered flat plate structure, and the outer wall of the condensing pipe forms a complete and continuous evaporation surface; the defects of large occupied space, serious loss of an evaporation surface of each heat exchange unit and reduction of effective evaporation surfaces caused by large interval between the heat exchange units of the tube (tube) arrangement and coil heat exchanger are avoided. The M-shaped concave-convex interphase curved surface structure (concave-convex arc shape) formed on the outer wall of the condenser tube is utilized to increase the heat exchange area, so that the defects of low efficiency, serious electro-corrosion, short service life and difficult cleaning of water scale caused by serious scaling due to the increase of fins for increasing the heat exchange area of the tube array fin type condenser are avoided; the plate surface formed by overlapping the circular tubes is multiplied by several times compared with the heat exchange area of a straight plate condenser with the same sectional area, and the heat exchange quantity is higher; compared with a flat plate type condenser, the double M-shaped concave-convex interphase curved surface can prolong the drainage time of cooling water on the plate surface, the flow speed and the flow direction of the cooling water between the concave surface and the convex surface are continuously changed, the occurrence of turbulent flow forms disturbance effect on a cooling water film, the heat exchange coefficient of an evaporation surface is increased, and the heat exchange efficiency is improved; the condenser pipe adopts an internal thread round pipe, increases the contact surface of refrigerant steam and the pipe wall, strengthens the heat conducting property, is beneficial to heat conduction, replaces the inner cavity of a straight (flat) plate condenser, and has the characteristics of strong pressure resistance, high heat transfer coefficient, corrosion resistance, simple process and low cost.
In the cold heat exchanger of self-spray water curtain formula evaporation of this embodiment, adopt the condenser pipe to arrange into platelike structure's design, compact structure, the heat transfer area who holds in the same volume is several times of arranging coil heat exchanger, and simultaneously, adopt the water distribution design of water curtain formula, the water distribution is more even, improve heat exchange efficiency, and, the design of the unsmooth alternate curved surface of evaporation heat-transfer face, further increase heat exchange efficiency, this is just under the circumstances that makes the same heat transfer volume, the volume of the cold heat exchanger of evaporation in the unit is littleer, corresponding also reduced the holistic volume of unit by a wide margin, reach miniaturized purpose.
In the self-spraying water curtain type evaporation cooling heat exchanger of the embodiment, a plurality of heat exchange plates are arranged at intervals along the direction vertical to the evaporation heat exchange surface, and enough gaps are kept among the heat exchange plates to form a channel convenient for air circulation, so that the self-spraying water curtain type evaporation cooling heat exchanger is convenient to clean and maintain.
In the self-spray water curtain type evaporative cooling heat exchanger of the embodiment, the heat exchange plate comprises a plurality of heat exchange units; the heat exchange units are vertically arranged, and two adjacent heat exchange units are connected through a bent section 213 of the condensation pipe, so that respective refrigerant condensation channels are correspondingly communicated; the top of the cooling pipe 203 in the heat exchange unit at the lower side in the two adjacent heat exchange units is connected with the bottom of the horizontal section 205 of the condenser pipe at the lowest side of the heat exchange unit at the upper side; the bottom end of the anti-splashing net 214 of each heat exchange unit is replaced by being connected with the pipe wall of the cooling pipe 203 of the adjacent heat exchange unit positioned at the lower side (the connection mode when a plurality of heat exchange units are arranged); the sectional type design that adopts a plurality of heat transfer units, the water distribution groove divide into a plurality of independent evaporation cooling's heat transfer unit with every heat transfer board, and every heat transfer unit only needs to guarantee this unit minimum and drenches the water yield, makes to distribute in the enough thin of condensation heat transfer board face water film, the cooling water vaporization of being convenient for evaporates. In the traditional straight (flat) plate condenser, a single cooling unit and a single heat exchange plate surface structure are adopted, and the water distribution amount needs to be increased because sufficient cooling water is required to be ensured at the tail ends (bottom end and far end) of the heat exchange plate surface, so that the water film at the water outlet end is too thick, and the evaporation efficiency is reduced; the sectional type design of this embodiment can solve the drawback of traditional straight (flat) plate condenser, has also avoided calandria, the uneven shortcoming that causes effective evaporation area low of coil pipe condenser heat transfer unit trickle simultaneously, and the sectional type of spraying unit formula design has both kept the integrality of whole space of a whole page water film, has guaranteed again that every heat transfer unit trickle is minimum, the water film is thinnest.
In the self-spraying water curtain type evaporative cooling heat exchanger of the embodiment, the connection modes of the cooling pipe 203, the water distribution tank 201 and the water distribution microporous plate 202 between two adjacent heat exchange units can be replaced by: a water distribution tank 201 is arranged above the cooling pipe 203, water distribution micro-porous plates 202 are arranged on two sides of the water distribution tank 201, the lower ends of the water distribution micro-porous plates 202 are connected with the pipe wall of the cooling pipe 203, and the upper ends of the water distribution micro-porous plates are connected with the pipe wall of the horizontal section 205 of the lowest condensing pipe of the heat exchange unit positioned on the upper side; the bottom of the cooling pipe 203 is connected with the top of the uppermost horizontal section 205 of the condensing pipe in the heat exchange unit; correspondingly, in the heat exchange unit positioned at the lower side, the top end of the anti-splashing net is replaced by being connected with the pipe wall of the cooling pipe of the heat exchange unit, and the bottom end of the anti-splashing net is replaced by being connected with the pipe wall of the horizontal section of the lowest condensing pipe of the heat exchange unit; the connection mode is selected according to actual needs.
In the self-spraying water curtain type evaporative cooling heat exchanger of the embodiment, in two adjacent heat exchange units, the number of the horizontal sections 205 of the condensing tubes in the heat exchange unit positioned at the lower side is smaller than the number of the horizontal sections 205 of the condensing tubes in the heat exchange unit positioned at the upper side, so that the heat exchange areas of the evaporative heat exchange surfaces of the plurality of heat exchange units are gradually decreased from top to bottom; the number of the water outlet holes 204 of the cooling pipe 203 in the heat exchange unit at the lower side is smaller than that of the water outlet holes 204 of the cooling pipe 203 at the upper side (the distance between the water outlet holes along the length direction of the cooling pipe is increased), so that the water distribution requirement of the evaporation heat exchange surface corresponding to the heat exchange area is met; the refrigerant cools layer by layer from top to bottom in the refrigerant condensing channel, the upper side is a high-temperature area, the evaporation capacity is large, the area of the evaporation heat exchange surface on the upper side is correspondingly large, and sufficient water distribution quantity is provided; the lower side is a low-temperature area, the evaporation capacity is relatively reduced, and the area of an evaporation heat exchange surface and the water distribution capacity need to be correspondingly reduced; the degressive design mode can fully utilize the advantages of sectional type design, can ensure that the corresponding heat exchange units are fully distributed with water, can also ensure that the water distribution quantity of the heat exchange units is minimum, and prevents the unvaporized cooling water of the heat exchange units positioned at the upper side from accumulating to the heat exchange units positioned at the lower side; ensure that the water films of the heat exchange units are uniform and thin, and save more water.
Example two
As shown in fig. 5 and fig. 6, the present embodiment provides a self-spray water curtain type evaporation cold and heat pump module unit, which employs a self-spray water curtain type evaporation cold heat exchanger 2 as described in the first embodiment, wherein a refrigerant vapor inlet is disposed at the top end of a refrigerant condensation channel of each heat exchange plate in the evaporation cold heat exchanger 2, and a refrigerant liquid outlet is disposed at the bottom end; one end of the cooling pipe of the heat exchange plate is provided with a cooling water inlet; refrigerant vapor inlets of the plurality of heat exchange plates are connected with a refrigerant vapor collecting pipe 207, refrigerant liquid outlets of the plurality of heat exchange plates are connected with a refrigerant liquid collecting pipe 209, and cooling water inlets of the cooling pipes 203 of the plurality of heat exchange plates are connected with a cooling collecting pipe 211; the refrigerant vapor collecting pipe 207 is further connected to a first refrigerant vapor main pipe 208, the refrigerant liquid collecting pipe 209 is further connected to a first refrigerant liquid main pipe 210, and the cooling collecting pipe 211 is further connected to a cooling main pipe 212 (the pipe lines are shown in fig. 3 and 4).
The self-spraying water curtain type evaporation cold and heat pump module unit further comprises an air cooling heat exchanger 3 and a refrigerant operation assembly 6; the evaporative cooling heat exchanger 2 and the air cooling heat exchanger 3 are connected in parallel and then are connected with a refrigerant operation assembly 6; the refrigerant operation assembly 6 is used for operating the refrigerant to exchange heat in the evaporative cooling heat exchanger 2 or the air cooling heat exchanger 3; the air-cooled heat exchanger 3 is connected with a second refrigerant steam main pipe 301 and a second refrigerant liquid main pipe 302; the first refrigerant steam main pipe 208 and the second refrigerant steam main pipe 301 are connected in parallel and then connected with the refrigerant operation assembly 6, and the first refrigerant liquid main pipe 210 and the second refrigerant liquid main pipe 302 are connected in parallel and then connected with the refrigerant operation assembly 6; the first refrigerant steam main pipe 208 is provided with a first electromagnetic valve 603, and the second refrigerant steam main pipe 301 is provided with a second electromagnetic valve 604.
In the self-spraying water curtain type evaporation cooling heat pump module unit, the evaporation cooling heat exchanger is used as a basis, the air-cooled heat exchanger is additionally arranged in parallel with the evaporation cooling heat exchanger, the heat pump heating function of the water-cooling (evaporation cooling) water chilling unit is realized, the current situation that the traditional water-cooling water chilling unit only refrigerates but does not heat is changed, and the use function of the water-cooling water chilling unit is expanded.
In the self-spraying water curtain type evaporation cold and heat pump module unit of the embodiment, the unit further comprises a water tank 5; a water pump 501 is arranged in the water tank 5; the water outlet end of the water pump 501 is communicated with the cooling main pipe 212 and is used for sending the cooling water in the water tank 5 into the evaporative cooling heat exchanger 2 through the cooling main pipe 212; the water tank 5 is also provided with a water replenishing port 502; the bottom of the water tank 5 is also connected with a sewage discharge pipe 503; a blowdown electromagnetic valve 504 is arranged on the blowdown pipe 503; and a cooling filler layer 4 is also arranged between the evaporative cooling heat exchanger 2 and the water tank 5 and is used for cooling the unevaporated water dropping from the evaporative cooling heat exchanger 2 and discharging the unevaporated water into the water tank 5.
In the self-spray water curtain type evaporation cold and heat pump module unit of this embodiment, the refrigerant operation assembly 6 includes a compressor 601, a four-way valve 602, a first solenoid valve 603, a second solenoid valve 604, a first one-way valve 605, a liquid storage tank 606, a drying filter 607, an economizer 608, a first expansion valve 609, a second one-way valve 610, a gas-liquid separator 611, a third solenoid valve 612, a second expansion valve 613, a third one-way valve 614, and a fourth one-way valve 615; the units also include a multi-connected indoor unit 12 (fluorine machine); the compressor 601 is provided with an air outlet, an air return port and an enthalpy increasing port; the four-way valve 602 has an a end, a b end, a c end, and a d end; the economizer 608 has an e end, an f end, a g end and an h end, wherein the e end and the f end are communicated in the economizer 608, and the g end and the h end are communicated in the economizer 608; the multi-connected indoor unit 12 has a j end and a k end, and the j end and the k end are two ports of a refrigerant channel of the multi-connected indoor unit;
the air outlet of the compressor 601, the end a and the end b of the four-way valve 602, the parallel pipeline of the first refrigerant steam main pipe 208/the second refrigerant steam main pipe 301, the first refrigerant steam main pipe 208 and the first electromagnetic valve 603 of the evaporative cooling heat exchanger 2, the first refrigerant liquid main pipe 210, the first check valve 605, the liquid storage tank 606, the drying filter 607, the h end and the g end of the economizer, the first expansion valve 609, the second check valve 610, the j end and the k end of the multi-connected indoor unit 12, the d end and the c end of the four-way valve, the gas-liquid separator 611 and the return air port of the compressor 601 are communicated to form a first refrigeration operation channel;
an air outlet of the compressor 601, an end a and an end b of the four-way valve 602, a pipeline formed by connecting the first refrigerant steam main pipe 208/the second refrigerant steam main pipe 301 in parallel, a second refrigerant steam main pipe 301 and a second electromagnetic valve 604 of the air-cooled heat exchanger 3 with the second refrigerant liquid main pipe 302, a first one-way valve 605, a liquid storage tank 606, a drying filter 607, an h end and a g end of an economizer, a first expansion valve 609, a second one-way valve 610, a j end and a k end of the multi-connected indoor unit 12, a d end and a c end of the four-way valve, a gas-liquid separator 611 and a return air inlet of the compressor 601 are sequentially communicated to form a second refrigeration operation channel;
an air outlet of the compressor 601, an a end and a d end of the four-way valve 602, a k end and a j end of the multi-connected indoor unit 12, a third one-way valve 614, a liquid storage tank 606, a drying filter 607, an h end and a g end of the economizer, a first expansion valve 609, a fourth one-way valve 615, a pipeline in parallel connection with the first refrigerant liquid main pipe 210/the second refrigerant liquid main pipe 302, a first refrigerant liquid main pipe 210 and a first refrigerant steam main pipe 208 of the evaporative cooling heat exchanger 2, a first electromagnetic valve 603, a b end and a c end/gas-liquid separator 611 of the four-way valve 602, and a return air port of the compressor 601 are sequentially communicated to form a first heating operation channel;
an air outlet of the compressor 601, an a end and a d end of the four-way valve 602, a k end and a j end of the multi-connected indoor unit 12, a third one-way valve 614, a liquid storage tank 606, a drying filter 607, an h end and a g end of the economizer, a first expansion valve 609, a fourth one-way valve 615, a pipeline formed by connecting the first refrigerant liquid main pipe 210/the second refrigerant liquid main pipe 302 in parallel, a second refrigerant liquid main pipe 302 and a second refrigerant steam main pipe 301 of the air-cooled heat exchanger 3, a second electromagnetic valve 604, a b end and a c end of the four-way valve 602, a gas-liquid separator 611 and a return air inlet of the compressor 601 are sequentially communicated to form a second heating operation channel;
in the first heating operation channel and the second heating operation channel, an outlet of the dry filter 607, the second expansion valve 613, the e end and the f end of the economizer, the third electromagnetic valve 612 and an enthalpy-increasing port of the compressor 601 are sequentially communicated to form an auxiliary enthalpy-increasing loop; and an internal channel between the e end and the f end in the economizer exchanges heat with an internal channel between the h end and the g end.
In the self-spraying water curtain type evaporation cold and heat pump module unit of the embodiment, the unit further comprises a casing 1, and a vent 11 is arranged at the top of the casing 1; a fan 7 is arranged in the ventilation opening 11; the evaporative cooling heat exchanger 2 and the cooling filler layer 4 are sequentially arranged below the fan 7; the air-cooled heat exchanger 3 is arranged at the outer side of the evaporative cooling heat exchanger 2; the water tank 5 is arranged below the evaporative cooling heat exchanger 2 and the air cooling heat exchanger 3, and the side wall of the casing 1 corresponding to the air cooling heat exchanger 3 is also provided with a ventilation grating 9; a water-stop sheet 8 is also arranged between the fan 7 and the evaporative cooling heat exchanger 2; an equipment chamber is also arranged below the water tank 5 in the machine shell 1; the refrigerant operation assembly 6 is installed in an equipment room, and an electric cabinet 10 is further arranged in the equipment room and used for controlling the fan 7, the water pump 501, the compressor 601, the four-way valve 602, the first electromagnetic valve 603, the second electromagnetic valve 604 and the third electromagnetic valve 612.
In the self-spraying water curtain type evaporation cold and heat pump module unit, the evaporation cold heat exchanger is adopted, and through the integrated water curtain type design, the evaporation capacity of cooling water is improved, so that the circulation capacity of the cooling water is reduced, and the power consumption of a cooling circulating pump is further reduced; the water distribution grooves which are embedded and hidden realize water curtain type water distribution and are matched with the anti-flying water net, so that the existence of free water can be reduced to the maximum extent, and flying water is not generated; the cooling water circulation volume is reduced, so that the air volume and the air speed of the fan are reduced, the phenomena of 'water flying' and 'water floating' are avoided, the water is saved, the volume of a cooling water tank is reduced due to the reduction of the cooling water circulation volume, and the volume of a unit is reduced; the heat exchange efficiency of the unit is higher, the size is smaller, and the miniaturization of the unit is realized.
In the self-spraying water curtain type evaporation cold and hot pump module unit, a screw or a centrifugal compressor is changed into a vortex spinning compressor or a low-power screw compressor, and the whole refrigerant circulating system of the unit is arranged in a cooling tower matched with the unit to form an integrated unit with a highly integrated heat exchange system and a cooling system, so that the miniaturization and the modularization (the consumed power is 5KW-40KW) of the unit are realized; after modularization, the single machine occupies 2-3 square meters, the weight is reduced to about 0.5T, and the installation and transportation of the machine set are facilitated.
In the self-spraying water curtain type evaporation cold and heat pump module unit, the cooling pipe network laying in the traditional water chilling unit engineering is omitted, the construction amount is reduced, and the construction difficulty is reduced; the lift of the built-in cooling water circulation system is close to 0, and the power of the cooling circulation pump is lower; an open heat exchange mode is adopted, and the power of the circulating pump is further reduced by utilizing the self gravity flow of water to exchange heat with a refrigerant; the embedded water curtain type water distribution is noiseless, and due to high heat exchange efficiency, the compressor adopts a small compressor to reduce the noise source intensity, the cooling water circulation volume is reduced, the fan power is reduced, the power of a cooling circulating pump is also effectively reduced, and the generated noise is further reduced; the noise pollution degree is integrally reduced and improved; the noise of the unit can be controlled below 65Pb and completely reaches the national standard, so that the problem of noise pollution is solved.
In the self-spraying water curtain type evaporation cooling heat pump module unit, a heat pump technology is fused, an air cooling heat exchanger is additionally arranged on the evaporation cooling heat exchanger, and the unit realizes the heating function of the air cooling heat pump by sharing refrigerant circulation and other components, thereby achieving the purpose of one machine for two purposes.
In the self-spraying water curtain type evaporation cold and heat pump module unit, the compressor can adopt a scroll compressor or a low-power screw compressor, the weight of a single unit is reduced to be below 0.5 ton, the unit is miniaturized and modularized, and the unit can be conveniently installed and transported; the small modular unit can be arranged on the roof of a roof, and a special machine room is not needed, so that the indoor space is saved; the machine sets after a plurality of small-sized modularization operate simultaneously and are mutually standby, the maintenance of individual machine sets does not influence the overall operation, and the operation stability of the whole air conditioning system is improved.
In the self-spraying water curtain type evaporation cold and heat pump module unit of the embodiment, the working principle that the evaporation cold heat exchanger is matched with other components is as follows: cooling water enters the cooling collecting pipe through the cooling header pipe and is uniformly distributed to the cooling pipes of the heat exchange units; high-temperature refrigerant steam enters the refrigerant steam collecting pipe through the refrigerant steam header pipe, and the refrigerant steam is uniformly distributed to the heat exchange units of the heat exchange plates through the refrigerant steam collecting pipe; after the cooling water is conveyed to the cooling pipe, as the cooling pipe is provided with a plurality of rows of water outlet holes, the cooling water is uniformly sprayed in the whole water distribution tank; the air pressure in the water distribution tank is equal to the external atmospheric pressure, and the cooling water keeps a pressure equalizing state under the dual actions of gravity and atmospheric pressure; cooling water can flow under self gravity flow and is uniformly distributed on the evaporation heat exchange plate surface through the water distribution microporous plate, and a thin-layer water curtain (water curtain) from top to bottom is formed by matching with the anti-splashing net; refrigerant steam moves layer by layer from top to bottom through a refrigerant condensation channel formed by the folded condenser tubes, large temperature difference is generated inside and outside the walls of the refrigerant tubes due to the existence of low-temperature cooling water on the outer walls of the condenser tubes, the heat of the refrigerant steam is quickly transferred from a high-temperature region in the refrigerant tubes to the outer walls of the condenser tubes in a low-temperature region and is transferred to cooling water flowing through the surfaces of the condenser tubes, the refrigerant releases heat to reduce the temperature, the cooling water absorbs heat to be evaporated and evaporated on the surfaces of the condensers, and saturated steam formed by evaporation is discharged into the atmosphere; the cooling water which is not evaporated is heated up after being subjected to heat convection with refrigerant steam in the condenser pipe, and drops in the cooling filler arranged at the lower part of the evaporative condenser along the two sides of the heat exchange surface through the bottom end of the heat exchange surface under the state of self gravity flow. The evaporative condenser at this moment serves as the water distribution function in the cooling water cooling condensation process, the cooling water that drips along the bottom of the whole evaporative condenser evenly drips to the top of the cooling filler on the lower part of the evaporative condenser, the cooling water forms a very thin water film on the surface of the cooling filler again when flowing downwards, the cooling water film on the surface of the filler exchanges heat with the ambient air that sweeps over the surface of the filler under the action of the fan, the cooling water is cooled after being cooled, the air is discharged to the atmosphere through the fan after being heated, and the filler has the cooling function at this moment. The cooled cooling water uniformly drops on the surface of the whole cooling water tank along the horizontal lower surface of the whole cooling filler, and the cooling water with lower temperature moves downwards under the action of a water pump, then enters the cooling pipe of each heat exchange unit after passing through the cooling main pipe and the cooling header pipe, and enters the next cooling circulation.
In the cold heat pump module unit of self-spray water curtain formula evaporation of this embodiment, including the refrigeration mode of evaporation cold heat exchanger, the refrigeration mode of air-cooled heat exchanger, the defrosting mode of air-cooled heat exchanger, the mode of heating of evaporation cold heat exchanger, specific mode flow is as follows:
refrigeration mode of evaporative cooling heat exchanger
In this mode, the water replenishment port of the water tank is switched to the cooling water port.
A refrigerant flow: the second electromagnetic valve and the third electromagnetic valve are closed, the first electromagnetic valve is opened, the a end of the four-way valve is communicated with the b end, and the c end is communicated with the d end; the compressor is electrified to work, high-temperature and high-pressure refrigerant steam is sprayed out from the air outlet of the compressor, enters the heat exchange units of the evaporative cooling heat exchanger through the first refrigerant steam main pipe through the first electromagnetic valve after entering the air inlet end and exiting the air outlet end b of the four-way valve, the refrigerant steam exchanges heat with the water curtain of the evaporative cooling heat exchanger for cooling, the refrigerant steam is cooled, liquefied and cooled, cooling water exchanges heat with the refrigerant steam in the evaporative cooling heat exchanger for heating, vaporization and evaporation, part of the cooling water is changed from liquid state to gaseous state, and the cooling water is discharged to the outdoor atmosphere through the fan in the form of latent heat of vaporization; the low-temperature high-pressure liquid refrigerant condensed and liquefied by the evaporative cooling heat exchanger passes through the first refrigerant liquid main pipe, then enters the liquid storage tank through the first one-way valve, continues to pass through the drying filter, enters through the h end of the economizer and exits through the g end, and is throttled and decompressed by the first expansion valve, so that the pressure and the temperature of the refrigerant are reduced; the throttled low-temperature low-pressure liquid refrigerant enters from the j end and exits from the k end of the multi-connected indoor unit through the second one-way valve and exchanges heat with indoor air in a refrigerant channel in the multi-connected indoor unit, the low-temperature low-pressure liquid refrigerant absorbs heat, is vaporized and evaporated into refrigerant steam, the refrigerant steam enters from the d end and exits from the c end of the four-way valve, enters a return air port of the compressor through the gas-liquid separator and is compressed, and a refrigerant circulation process is completed.
In the mode, the water pump starts the compressor preferentially, and the fan starts after a set time interval; and the cooling water with lower temperature in the water tank is conveyed to the cooling pipes of the heat exchange units of the evaporation cold heat exchanger through the cooling main pipe and the cooling collecting pipe under the action of the water pump. Cooling water is uniformly distributed on the surfaces of the heat exchange plates after passing through the water distribution grooves of the heat exchange units to form a water film, the temperature of the surface of each heat exchange plate is about 90 ℃, so that the cooling water is heated and quickly vaporized and evaporated, the heat of a large amount of refrigerants is directly taken away, the unvaporized cooling water and each heat exchange plate carry out convective heat exchange and are heated and then dripped to the upper part of a cooling filler layer below the unvaporized cooling water, a thin water film is formed on the cooling water along the surface of the cooling filler layer from top to bottom under the action of gravity, and the temperature of the cooling water is higher than the ambient temperature, so that water vapor on the surface of the water film is in a supersaturated state to form atomization, and the atomized water vapor is discharged under the action of a fan; the unvaporized cooling water with higher temperature carries out convective heat exchange with the cooling filler layer and carries out radiation heat exchange with air; as the cooling water sinks along the cooling filler layer, the temperature is gradually reduced, and finally all heat is discharged to the atmosphere through the fan; and the cooled cooling water with lower temperature uniformly drops to the upper surface of the cooling water tank along the bottom surface of the cooling filler layer to complete a water circulation process.
Refrigeration mode of air-cooled heat exchanger
A refrigerant flow: the first electromagnetic valve and the third electromagnetic valve are closed, the second electromagnetic valve is opened, the a end of the four-way valve is communicated with the b end, and the c end is communicated with the d end; the compressor is electrified to work, high-temperature and high-pressure refrigerant steam is sprayed out from the air outlet of the compressor, enters the air-cooled heat exchanger through the end a and the end b of the four-way valve and enters the air-cooled heat exchanger through the second electromagnetic valve and the second refrigerant steam main pipe, the high-temperature and high-pressure refrigerant steam exchanges heat with circulating air flowing through the surface of the air-cooled heat exchanger, the refrigerant steam is cooled, liquefied and cooled, and hot air is exhausted to the outdoor atmosphere through the fan after the heat exchange and temperature rise; the condensed low-temperature high-pressure liquid refrigerant passes through the second refrigerant liquid main pipe, then enters the liquid storage tank through the first one-way valve, continues to pass through the drying filter, enters through the h end and exits through the g end of the economizer, and then is throttled and decompressed by the first expansion valve, so that the pressure and the temperature of the refrigerant are reduced; the throttled low-temperature low-pressure liquid refrigerant enters from the j end and exits from the k end of the multi-connected indoor unit through the second one-way valve and exchanges heat with indoor air in a refrigerant channel in the multi-connected indoor unit, the low-temperature low-pressure liquid refrigerant absorbs heat, is vaporized and evaporated into refrigerant steam, the refrigerant steam enters from the d end and exits from the c end of the four-way valve, enters a return air port of the compressor through the gas-liquid separator and is compressed, and a refrigerant circulation process is completed.
In the mode, the water pump is closed, the fan starts the compressor preferentially, and the evaporative cooling heat exchanger is in a standby state; because of the effect of fan, the unit is inside to be negative pressure state, and ambient air gets into the unit through the ventilation grid, and with the heat exchanger heat transfer of forced air cooling, the refrigerant is cooled off liquefaction cooling, and the air is heated and has taken away the refrigerant heat, discharges through the discharge port and shifts to the atmosphere in.
Defrosting mode of air-cooled heat exchanger
A refrigerant flow: the first electromagnetic valve and the third electromagnetic valve are closed, the second electromagnetic valve is opened, the a end of the four-way valve is communicated with the b end, and the c end is communicated with the d end; the compressor is electrified to work, high-temperature and high-pressure refrigerant steam is sprayed out from an air outlet of the compressor, enters the air-cooled heat exchanger through the a end and the b end of the four-way valve, enters the air-cooled heat exchanger through the second electromagnetic valve through the second refrigerant steam main pipe, exchanges heat with ice (frost) on the surface of the air-cooled heat exchanger, is cooled, liquefied and cooled, is heated with the refrigerant steam in the air-cooled heat exchanger, is divided into steam after being heated, is diffused and discharged to the outdoor atmosphere through natural flowing of air, and is mostly melted into water to flow back to the cooling water tank. The condensed low-temperature high-pressure liquid refrigerant passes through the second refrigerant liquid main pipe, then enters the liquid storage tank through the first one-way valve, continues to pass through the drying filter, enters through the h end and exits through the g end of the economizer, and then is throttled and decompressed by the first expansion valve, so that the pressure and the temperature of the refrigerant are reduced; the throttled low-temperature and low-pressure liquid refrigerant enters from the j end and exits from the k end of the multi-connected indoor unit through the second one-way valve and exchanges heat with indoor air in a refrigerant channel in the multi-connected indoor unit, the low-temperature and low-pressure liquid refrigerant absorbs heat to vaporize and evaporate into refrigerant steam, the refrigerant steam enters from the d end and exits from the c end of the four-way valve, and enters a return air port of the compressor through the gas-liquid separator and then is compressed, so that a refrigerant circulation process is completed; when the environment temperature is lower, the third electromagnetic valve is opened, part of the low-temperature high-pressure refrigerant liquid flowing through the drying filter passes through the second expansion valve and then passes through the end e of the economizer to be discharged, the part of the refrigerant liquid and the refrigerant liquid discharged from the end h of the economizer are subjected to heat absorption, temperature rise and vaporization, and the refrigerant steam passes through the third electromagnetic valve and then returns to the enthalpy increasing port of the compressor.
In this mode, the water pump is turned off, the fan is turned off, and the evaporative cooling heat exchanger is in a standby state.
Heating mode of four-air-cooled heat exchanger
A refrigerant flow: the first electromagnetic valve and the third electromagnetic valve are closed, the second electromagnetic valve is opened, the a end of the four-way valve is communicated with the d end, and the b end of the four-way valve is communicated with the c end; the compressor is electrified to work, high-temperature and high-pressure refrigerant steam enters from the end a and the end d of the four-way valve and then enters from the end k and the end j of the multi-connected indoor unit and exchanges heat with indoor air in a refrigerant channel in the multi-connected indoor unit, the high-temperature and high-pressure liquid refrigerant is condensed into a medium-temperature and medium-pressure liquid refrigerant after exchanging heat, the liquid refrigerant enters the liquid storage tank through the third one-way valve, and the medium-temperature and medium-pressure liquid refrigerant is continuously divided into two paths after passing through the drying filter: the first path enters from the h end and exits from the g end of the economizer, and the second path enters from the e end and exits from the f end of the economizer after being throttled and depressurized by a second expansion valve; two paths of refrigerants exchange heat in the economizer; the medium-temperature and medium-pressure liquid refrigerant in the first path is further condensed and cooled in the economizer, and then is throttled and decompressed by a first expansion valve to form a low-temperature and low-pressure liquid refrigerant; a low-temperature low-pressure liquid refrigerant enters the air-cooled heat exchanger through the fourth check valve and the second refrigerant liquid main pipe, the low-temperature low-pressure liquid refrigerant exchanges heat with circulating air flowing through the surface of the heat exchanger, the liquid refrigerant is heated and vaporized into refrigerant steam, then the refrigerant steam passes through the second refrigerant steam main pipe and the second electromagnetic valve, enters the b end and exits the c end of the four-way valve, passes through the gas-liquid separator and enters the air return port of the compressor for compression, and the main circulation process of the refrigerant is completed; the medium-temperature and medium-pressure liquid refrigerant of the second path is throttled and depressurized by a second expansion valve and then is further heated and vaporized in an economizer to form medium-temperature and low-pressure steam; the medium-temperature low-pressure steam returns to an enthalpy increasing port of the compressor after passing through a third electromagnetic valve, and an auxiliary enthalpy increasing cycle is completed.
In the mode, the water pump is closed, the fan starts the compressor preferentially, and the evaporative cooling heat exchanger is in a standby state; because of the effect of fan, the unit is inside to be negative pressure state, and ambient air gets into the unit through the ventilation grid, and with the heat exchanger heat transfer of forced air cooling, refrigerant liquid is by the vaporization intensification, and the air releases the heat and cools down, discharges through the discharge port and shifts to the atmosphere in, realizes the heat function of forced air cooling heat exchanger heat pump heating.
Heating mode of evaporative cooling heat exchanger
Under this mode, the moisturizing mouth of water tank switches to industry waste heat waste water interface.
A refrigerant flow: the second electromagnetic valve and the third electromagnetic valve are closed, the first electromagnetic valve is opened, the a end of the four-way valve is communicated with the d end, and the b end of the four-way valve is communicated with the c end; the compressor is electrified to work, high-temperature and high-pressure refrigerant steam enters from the end a and the end d of the four-way valve and then enters from the end k and the end j of the multi-connected indoor unit and exchanges heat with indoor air in a refrigerant channel in the multi-connected indoor unit, the high-temperature and high-pressure liquid refrigerant is condensed into a medium-temperature and medium-pressure liquid refrigerant after exchanging heat, the liquid refrigerant enters the liquid storage tank through the third one-way valve, and the medium-temperature and medium-pressure liquid refrigerant is continuously divided into two paths after passing through the drying filter: the first path enters from the h end and exits from the g end of the economizer, and the second path enters from the e end and exits from the f end of the economizer after being throttled and depressurized by a second expansion valve; two paths of refrigerants exchange heat in the economizer; the medium-temperature and medium-pressure liquid refrigerant in the first path is further condensed and cooled in the economizer, and then is throttled and decompressed by a first expansion valve to form a low-temperature and low-pressure liquid refrigerant; the low-temperature low-pressure liquid refrigerant enters the evaporative cooling heat exchanger through the fourth check valve and the first refrigerant liquid main pipe, after the low-temperature low-pressure liquid refrigerant exchanges heat with the industrial waste heat wastewater flowing through the surface of the heat exchanger, the liquid refrigerant is heated and vaporized to form refrigerant steam, then the refrigerant steam passes through the first refrigerant steam main pipe and the first electromagnetic valve, enters the b end and exits the c end of the four-way valve, passes through the gas-liquid separator and then enters the air return port of the compressor for compression, and the main circulation process of the refrigerant is completed; the medium-temperature and medium-pressure liquid refrigerant of the second path is throttled and depressurized by a second expansion valve and then is further heated and vaporized in an economizer to form medium-temperature and low-pressure steam; the medium-temperature low-pressure steam returns to an enthalpy increasing port of the compressor after passing through a third electromagnetic valve, and an auxiliary enthalpy increasing cycle is completed.
In the mode, the fan is closed, and the water pump starts the compressor preferentially; industrial waste heat and waste water is evenly distributed on the surface of each heat exchange plate, liquid refrigerants are vaporized to be heated, hot water releases heat to be cooled, and the hot water is discharged through a blow-off pipe through a blow-off electromagnetic valve, so that a water source type heating function is realized.
EXAMPLE III
As shown in fig. 7 and 8, the present embodiment is different from the second embodiment in that: the unit does not comprise a multi-connected indoor unit 12, and is connected with an indoor heat exchanger (water machine); the indoor heat exchanger comprises an outdoor heat exchanging part 13 and an indoor heat exchanging part; the outdoor heat exchange part 13 is communicated with the indoor heat exchange part through a cold-carrying agent (cooling water) channel; the outdoor heat exchanging portion 13 further includes a refrigerant heat exchanging channel that exchanges heat with a secondary refrigerant (cooling water) channel; the refrigerant heat exchange channel is provided with an m end and an n end, and the m end and the n end are respectively connected with the refrigerant operation assembly 6 instead of the j end and the k end of the multi-connected indoor unit 12; the outdoor heat exchanging part 13 is disposed in an equipment room in the unit.
In the self-spraying water curtain type evaporation cold and heat pump module unit of the embodiment, during heat exchange, a refrigerant in the refrigerant operation assembly enters the refrigerant heat exchange channel of the outdoor heat exchange part to exchange heat with a secondary refrigerant (cooling water) in the secondary refrigerant channel, and the secondary refrigerant (cooling water) is conveyed to the indoor heat exchange part to exchange heat with indoor air.
The above embodiments should not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent transformations fall within the protection scope of the present invention.

Claims (10)

1. A self-spraying water curtain type evaporative cooling heat exchanger is characterized in that: comprises a plurality of heat exchange plates; the plurality of heat exchange plates are arranged at intervals along the direction vertical to the evaporation heat exchange surface; each heat exchange plate comprises at least one heat exchange unit; the heat exchange unit is a plate-shaped structure formed by vertically arranging a plurality of horizontal sections of the condensing tubes, two ends of the horizontal sections of the condensing tubes are connected through bent sections of the condensing tubes to form at least one refrigerant condensing channel, two surfaces of the plate-shaped structure form evaporation heat exchange surfaces, and the horizontal sections of two adjacent condensing tubes are connected without gaps, so that the evaporation heat exchange surfaces are continuous and in a concave-convex shape; a cooling pipe is also arranged above the horizontal section of the uppermost condensing pipe; a water distribution groove is also arranged between the cooling pipe and the horizontal section of the uppermost condensing pipe; both sides of the water distribution tank are provided with water distribution microporous plates; the upper end of the water distribution microporous plate is connected with the pipe wall of the cooling pipe, and the lower end of the water distribution microporous plate is connected with the pipe wall of the horizontal section of the uppermost condensing pipe, so that the water distribution tank is fixed between the cooling pipe and the heat exchange unit in an embedded manner to form an integral structure; the cooling pipe is provided with a plurality of rows of water outlet holes which are communicated with the water distribution tank and used for uniformly injecting water into the water distribution tank; the water distribution tank is used for overflowing water injected by the cooling pipe through the water distribution microporous plate by the self gravity of the water and uniformly distributing the water on the surface of the evaporation heat exchange plate to form a water curtain; the outer side of the evaporation heat exchange surface is also connected with an anti-flying water net which is laid on the surface of the evaporation heat exchange plate and is connected with the horizontal section of each condensing tube, the top end of the anti-flying water net is connected with the tube wall of the horizontal section of the uppermost condensing tube, and the bottom end of the anti-flying water net is connected with the tube wall of the horizontal section of the lowermost condensing tube, so that the water distribution microporous plate and the anti-flying water net form a complete plate surface.
2. The self-spraying water curtain type evaporative cooling heat exchanger as claimed in claim 1, wherein: the heat exchange plate comprises a plurality of heat exchange units; the heat exchange units are vertically arranged, and two adjacent heat exchange units are connected through bent sections of the condensing pipes, so that respective refrigerant condensing channels are correspondingly communicated; the top of a cooling pipe in the heat exchange unit positioned at the lower side in the two adjacent heat exchange units is connected with the bottom of the horizontal section of the condensation pipe at the lowest side of the heat exchange unit positioned at the upper side; the bottom end of the anti-splashing net of each heat exchange unit is replaced by a pipe wall connected with the adjacent cooling pipe of the heat exchange unit positioned on the lower side.
3. A self-spraying water curtain evaporative cooling heat exchanger as recited in claim 2, wherein: in two adjacent heat exchange units, the number of the horizontal sections of the condensing tubes in the heat exchange unit at the lower side is smaller than that of the horizontal sections of the condensing tubes in the heat exchange unit at the upper side, so that the heat exchange areas of the evaporation heat exchange surfaces of the heat exchange units are gradually reduced from top to bottom; the number of the water outlet holes of the cooling pipes in the heat exchange unit on the lower side is smaller than that of the water outlet holes of the cooling pipes on the upper side, and the water distribution requirements of the evaporation heat exchange surfaces corresponding to the heat exchange areas are met.
4. A self-spraying water curtain evaporative cooling heat exchanger as claimed in claim 3, wherein: the connection mode of the cooling pipe, the water distribution groove and the water distribution microporous plate between two adjacent heat exchange units is replaced by: a water distribution groove is arranged above the cooling pipe, water distribution micro-porous plates are arranged on two sides of the water distribution groove, the lower ends of the water distribution micro-porous plates are connected with the pipe wall of the cooling pipe, and the upper ends of the water distribution micro-porous plates are connected with the pipe wall of the horizontal section of the lowest condenser pipe of the heat exchange unit positioned on the upper side; the bottom of the cooling pipe is connected with the top of the horizontal section of the uppermost condensing pipe in the heat exchange unit; correspondingly, in the heat exchange unit positioned on the lower side, the top end of the anti-splashing net is replaced by being connected with the pipe wall of the cooling pipe of the heat exchange unit, and the bottom end of the anti-splashing net is replaced by being connected with the pipe wall of the horizontal section of the lowest condensing pipe of the heat exchange unit.
5. The utility model provides a cold heat pump module unit is evaporated to self-spraying water curtain formula which characterized in that: the evaporative cooling heat exchanger is characterized by comprising a refrigerant steam inlet arranged at the top end of a refrigerant condensing channel of each heat exchange plate in the evaporative cooling heat exchanger and a refrigerant liquid outlet arranged at the bottom end of the refrigerant condensing channel; one end of the cooling pipe of the heat exchange plate is provided with a cooling water inlet; refrigerant steam inlets of the plurality of heat exchange plates are connected with a refrigerant steam collecting pipe, refrigerant liquid outlets of the plurality of heat exchange plates are connected with a refrigerant liquid collecting pipe, and cooling water inlets of cooling pipes of the plurality of heat exchange plates are connected with a cooling collecting pipe; the cooling system is characterized in that the refrigerant vapor collecting pipe is also connected with a first refrigerant vapor main pipe, the refrigerant liquid collecting pipe is also connected with a first refrigerant liquid main pipe, and the cooling collecting pipe is also connected with a cooling main pipe.
6. The self-spraying water curtain type evaporation cold heat pump module unit as claimed in claim 5, wherein: the air-cooled heat exchanger and the refrigerant running assembly are also included; the evaporative cooling heat exchanger and the air cooling heat exchanger are connected in parallel and then are connected with the refrigerant operation assembly; the refrigerant operation assembly is used for operating a refrigerant to exchange heat in an evaporative cooling heat exchanger or an air cooling heat exchanger; the air-cooled heat exchanger is connected with a second refrigerant steam main pipe and a second refrigerant liquid main pipe; the first refrigerant steam main pipe and the second refrigerant steam main pipe are connected in parallel and then connected with the refrigerant operation assembly, and the first refrigerant liquid main pipe and the second refrigerant liquid main pipe are connected in parallel and then connected with the refrigerant operation assembly; the first refrigerant steam main pipe is provided with a first electromagnetic valve, and the second refrigerant steam main pipe is provided with a second electromagnetic valve.
7. The self-spraying water curtain type evaporation cold heat pump module unit as claimed in claim 6, wherein: the unit also comprises a water tank; a water pump is arranged in the water tank; the water outlet end of the water pump is communicated with the cooling main pipe and is used for sending cooling water in the water tank into the evaporative cooling heat exchanger through the cooling main pipe; the water tank is also provided with a water replenishing port; the bottom of the water tank is also connected with a sewage discharge pipe; a sewage discharge electromagnetic valve is arranged on the sewage discharge pipe; and a cooling filler layer is also arranged between the evaporative cooling heat exchanger and the water tank and is used for cooling the unevaporated water dropping from the evaporative cooling heat exchanger and discharging the unevaporated water into the water tank.
8. The self-spraying water curtain type evaporation cold heat pump module unit as claimed in claim 7, wherein: the refrigerant operation assembly comprises a compressor, a four-way valve, a first electromagnetic valve, a second electromagnetic valve, a first one-way valve, a liquid storage tank, a drying filter, an economizer, a first expansion valve, a second one-way valve, a gas-liquid separator, a third electromagnetic valve, a second expansion valve, a third one-way valve and a fourth one-way valve; the unit also comprises a multi-connected indoor unit; the compressor is provided with an air outlet, an air return port and an enthalpy increasing port; the four-way valve is provided with an a end, a b end, a c end and a d end; the economizer is provided with an e end, an f end, a g end and an h end, wherein the e end is communicated with the f end in the economizer, and the g end is communicated with the h end in the economizer; the multi-connected indoor unit is provided with a j end and a k end, and the j end and the k end are two ports of a refrigerant channel of the multi-connected indoor unit;
the system comprises a compressor, a gas outlet of the compressor, an end a and an end b of a four-way valve, a pipeline formed by connecting a first refrigerant steam main pipe/a second refrigerant steam main pipe in parallel, a first refrigerant steam main pipe and a first electromagnetic valve of an evaporative cooling heat exchanger, a first refrigerant liquid main pipe, a first one-way valve, a liquid storage tank, a drying filter, an h end and a g end of an economizer, a first expansion valve, a second one-way valve, a j end and a k end of a multi-connected indoor unit, a d end and a c end of the four-way valve, a gas-liquid separator and a gas return port of the compressor, wherein the gas outlet of the;
the air outlet of the compressor, the ends a and b of the four-way valve, a pipeline formed by connecting the first refrigerant steam main pipe/the second refrigerant steam main pipe in parallel, a second refrigerant steam main pipe and a second electromagnetic valve of the air-cooled heat exchanger and a second refrigerant liquid main pipe, a first one-way valve, a liquid storage tank, a drying filter, the h end and the g end of an economizer, a first expansion valve, a second one-way valve, the j end and the k end of a multi-connected indoor unit, the d end and the c end of the four-way valve, a gas-liquid separator and the air return port of the compressor are sequentially communicated to form a second refrigeration operation channel;
the system comprises a compressor, a first refrigerant steam main pipe, a first solenoid valve, a second refrigerant steam main pipe, a first solenoid valve, a gas-liquid separator, a gas return port of the compressor, a gas outlet of the compressor, an a end and a d end of a four-way valve, a k end and a j end of a multi-connected indoor unit, a third one-way valve, a liquid storage tank, a drying filter, an h end and a g end of an economizer, the first expansion valve, a fourth one-way valve, a first refrigerant liquid main pipe/second refrigerant liquid main pipe parallel pipeline, a first refrigerant liquid main pipe of an evaporative cooling heat exchanger, the first refrigerant steam main pipe and a;
the air outlet of the compressor, the a end and the d end of the four-way valve, the k end and the j end of the multi-connected indoor unit, the third one-way valve, the liquid storage tank, the drying filter, the h end and the g end of the economizer, the first expansion valve, the fourth one-way valve, a pipeline formed by connecting the first refrigerant liquid main pipe/the second refrigerant liquid main pipe in parallel, the second refrigerant liquid main pipe, the second refrigerant steam main pipe and the second electromagnetic valve of the air-cooling heat exchanger, the b end and the c end of the four-way valve, the gas-liquid separator and the air return port of the compressor are sequentially communicated to form a second heating operation channel;
in the first heating operation channel and the second heating operation channel, an outlet of the drying filter, the second expansion valve, an e end and an f end of the economizer, the third electromagnetic valve and an enthalpy-increasing port of the compressor are communicated in sequence to form an auxiliary enthalpy-increasing loop; and an internal channel between the e end and the f end in the economizer exchanges heat with an internal channel between the h end and the g end.
9. The self-spraying water curtain type evaporation cold heat pump module unit as claimed in claim 8, wherein: the unit also comprises a shell, and a ventilation opening is formed in the top of the shell; a fan is arranged in the ventilation opening; the evaporative cooling heat exchanger and the cooling filler layer are sequentially arranged below the fan; the air-cooled heat exchanger is arranged on the outer side of the evaporative cooling heat exchanger; the water tank is arranged below the evaporative cooling heat exchanger and the air-cooling heat exchanger, and the side wall of the shell corresponding to the air-cooling heat exchanger is also provided with a ventilation grating; a water-stop sheet is also arranged between the fan and the evaporative cooling heat exchanger; an equipment chamber is also arranged below the water tank in the machine shell; the refrigerant operation assembly is installed in the equipment room, and the equipment room is also internally provided with an electric cabinet for controlling the fan, the water pump, the compressor, the four-way valve, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve.
10. The self-spraying water curtain type evaporation cold heat pump module unit as claimed in claim 8 or 9, wherein: the unit does not comprise a multi-connected indoor unit, and is connected with the indoor heat exchanger; the indoor heat exchanger comprises an outdoor heat exchanging part and an indoor heat exchanging part; the outdoor heat exchange part is communicated with the indoor heat exchange part through a cold-carrying agent channel; the outdoor heat exchange part also comprises a refrigerant heat exchange channel for exchanging heat with the secondary refrigerant channel; the refrigerant heat exchange channel is provided with an m end and an n end, and the m end and the n end are respectively connected with the refrigerant operation assembly instead of the j end and the k end of the multi-connected indoor unit.
CN202010401526.6A 2020-05-13 2020-05-13 Self-spraying water curtain type evaporative cooling heat exchanger and heat pump module unit Pending CN111473662A (en)

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PCT/CN2021/093093 WO2021228096A1 (en) 2020-05-13 2021-05-11 Automatic spraying water-curtain evaporative cooling heat exchanger, and heat pump module unit

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