CN107763902A - A kind of refrigerated air-conditioning system - Google Patents

A kind of refrigerated air-conditioning system Download PDF

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Publication number
CN107763902A
CN107763902A CN201711061137.8A CN201711061137A CN107763902A CN 107763902 A CN107763902 A CN 107763902A CN 201711061137 A CN201711061137 A CN 201711061137A CN 107763902 A CN107763902 A CN 107763902A
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CN
China
Prior art keywords
pump
pipe
refrigerant
seal casinghousing
pump housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711061137.8A
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Chinese (zh)
Inventor
陈建万
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Individual
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Individual
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Publication date
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Priority to CN201711061137.8A priority Critical patent/CN107763902A/en
Publication of CN107763902A publication Critical patent/CN107763902A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

A kind of refrigerated air-conditioning system, mainly by be additionally arranged on the pump housing (2) and its dragging motor combination structure seal casinghousing (7) (its structure type sealed is by metal material and passes through metal and weld hermetically sealed shielding of the pump with both dragging motors with free surrounding space in the liquid pump implemented) be additionally arranged gas pressure balancing pipe (3) this connect the cavity space by being formed between seal casinghousing (7) and the pump housing (2) and dragging motor interface key two behaves, and the pipe of liquid refrigerant pump (B) device (system) in high-rise building refrigerated air-conditioning system containing the pump housing (2) connect method to realize；It is therein it is critical that the gas pressure balancing pipe (3) of the liquid refrigerant pump (B) is in the position that air-conditioning refrigeration system links：Leave the nearest position of compressor (9) air entry, i.e., the minimum position of pressure in whole refrigeration system.--- it is best suited for the use in high-rise building refrigerated air-conditioning system.

Description

A kind of refrigerated air-conditioning system
Technical field
The present invention relates to application process technology of the full sealing type refrigerant fluid pump in high-rise building refrigerated air-conditioning system, Belong to a kind of improvement project to similar use or application process technology.
Background technology
At present, in high-rise or high-rise building refrigerated air-conditioning system, by compressor is formed in refrigeration system Pressure is difficult to low-pressure, liquid refrigerant force feed up, usually rely on the secondary cold of the equipment such as water and its supporting water pump composition Amount transmits coolant media dispenser and assists to complete the conveying of cold.
--- it is big again using the leakage rate of water during water pump because the leakage problem of liquid pump does not solve, substantially will not shadow The use cost to the refrigeration system is rung, allows water to assist transmission cold among this as middle transition medium although adding Link, it is unfavorable in the energy-conservation of whole refrigeration system, however, reality has been proven that what this still can bear；And use refrigeration During agent pump, what it was leaked is the refrigerant of very expensive air-conditioning high-temperature refrigeration purposes, and the sharp increase of caused use cost is People are difficult to what is born, although this measure (using refrigerant fluid pump) can allow refrigerant in evaporator by directly evaporating Absorb heat and (cold for reducing a water transmits intermediate link) is cooled down to the air in room, be advantageous to save, however, it The benefit brought is more harm than good compared with the harm that refrigerant leakage is brought, and still maintains to ask water to assist hot and cold amount Secondary transmission.
At present, successfully employ that (refrigerant can be with non-tight ammonia pump in the cryogenic refrigerating system of high-rise freezer first Leaked at the axle envelope of liquid pump in atmospheric air --- can be described as the maximum position of leakage rate) be main body ammonia refrigerant Pressurize dispenser, realizes the process of the direct sweat cooling in evaporator of the refrigerant in high-rise low temperature storehouse.Its deficiency It is：Ammonia refrigerant liquid leaked at each cohesive position of ammonia pump it is larger, regularly periodically to refrigeration system supplement ammonia system Cryogen is (almost once a few days) unavoidable, nevertheless, still the advantages outweigh the disadvantages, because the cost ratio of ammonia refrigerant Water is how many at the worst.If by refrigerant ammoniacal liquor (about 0.2 yuan of per kilogram) be changed to freon F12 (per kilogram about more than 40 yuan) or Its congeniality substitute (cost can be higher), this will certainly improve its cost of freezing into nearly 200 times ground.Therefore, using fluorine Leon or its congeniality substitute are nearly all individual layer (not needing refrigerant fluid pump) as the low-temperature cold store of refrigerant.
Do not given technically and solved due to the leakage problem in refrigeration system primarily as the liquid pump of leakage " rich and influential family " Certainly, and due to being suitable for high-temperature refrigeration, i.e. the refrigerant of air conditioner refrigerating is very expensive, therefore, how in the most height of usage amount In the refrigerated air-conditioning system of layer or high-rise building, the water for following poorly efficient " sensible heat " delivery of energy rule is omitted as conveying cold energy Intermediate medium and its it is supporting by the equipment such as recirculated water cooling of the water pump as power be the theme among refrigeration link, and take In generation, is by following the problem of refrigerant of efficient " latent heat " refrigeration is directly to above-mentioned building sweat cooling, just to turn into relevant technology Personnel wish the big problem solved always.
Obviously, solve the above problems or the premise of greatest problem is：Must solve liquid pump, i.e., refrigerant fluid pump is above-mentioned Leakage problem, because it has been directly related to the use cost problem of refrigeration system.
The content of the invention
The purpose of the present invention：The leakage problem for solving refrigerant fluid pump from its structure is started with, and then realizes it in high level Or it is related to a kind of improvement of its energy-conservation reliability of raising of Refrigeration Engineering application aspect in high-rise building.
In order to realize the above-mentioned purpose of the present invention, intend using following technology：
Application method of the present invention in high-rise storied house refrigerating system, the low pressure receiver barrel for being mainly provided in adapted are attached Method of the near refrigerant fluid pump to outer tube even：
The low pressure feed tube of refrigerant fluid pump is connected to the bottom position or low pressure receiver barreled of the low pressure receiver barrel of adapted Put the position below inner refrigerant liquid level；
The high pressure drain pipe of refrigerant fluid pump is connected to the entrance point of refrigeration system evaporator；
The gas pressure balancing pipe on refrigerant fluid pump top be connected to leave the nearest position of compressor air suction mouth (such as：Close on The front end of air entry valve).
Structure type of the present invention as the refrigerant fluid pump of crucial performs device：
Include in structure：The pump housing and the dragging motor and seal casinghousing being made up of rotor and rotor windings, the pump housing and It is sealed in dragging motor in a seal casinghousing, the seal casinghousing is provided with low pressure feed tube, high pressure drain pipe and gas Three pipe joints of pressure-equalizing pipe；
The metal sealed by metal welding completely cut off completely with outside air that described seal casinghousing refers to be formed by metal is close Close container；
The interface tube of described gas pressure balancing pipe is connected by being formed between seal casinghousing and the pump housing and dragging motor Cavity space top；
The interface tube of described low pressure feed tube be through seal casinghousing in the feed liquor mouth of pipe of above-mentioned cavity space and the pump housing connect Logical；
The interface tube of described high pressure drain pipe be through seal casinghousing in the drain pipe mouth of above-mentioned cavity space and the pump housing connect Logical.
The features of the present invention：
One, is additionally arranged full seal type metal sealing housing in structure, thoroughly to solve refrigerant fluid pump to extraneous spatial leaks The problem of refrigerant, creates condition；--- while and then to omit water in high-rise or super high-rise building refrigeration air-conditioning system This transmits coolant media by poorly efficient " sensible heat " secondary cold and instead refrigerating capacity is straight to perform caused by efficient " latent heat " The refrigerant for connecing sweat cooling process creates condition again, favourable in significantly energy-conservation.
Two, leave the nearest portion of compressor air suction mouth it is crucial that allowing the gas pressure balancing pipe in the present invention to be connected in Position (such as：Close on the front end of air entry valve)：This is just to allow in refrigeration system based on the position of minimum pressure to be responsible for refrigeration The vaporization of the liquid refrigerant of agent liquid pump internal leakage and recovery task, link in this crucial pipe and are improved on structure to be thorough Solve the problems, such as that above-mentioned refrigerant fluid pump more creates condition to the reliability of extraneous spatial leaks refrigerant indirectly；--- simultaneously Objectively for the present invention allow using in the larger refrigerant fluid pump of leakage rate the core component pump housing (such as：Rotating shaft sealing compared with Difference) or extend life-span (relevant with the degree that liquid refrigerant leaks out the pump housing) of the pump body wear-out part and create bar again Part.
Brief description of the drawings
Fig. 1 illustrates the structure type of full sealing type refrigerant fluid pump.--- the key point of diagram is：In common liquid pump The periphery of the pump housing and dragging motor, which adds to be constituted by metal sealing housing, to be prevented to enter air by the refrigerant of pump housing leakage The three-dimensional defense line in space so that above-mentioned leakage is changed into the internal leakage of refrigeration system.
Fig. 2 illustrates to be pressurizeed for the refrigerant that main body forms by low pressure receiver bucket and closed type refrigerant fluid pump and dispensed Apparatus system.--- the key point of diagram is：The other end for the gas pressure balancing pipe for connecting refrigerant fluid pump is connected to system In cooling system near minimum low pressure source position.
B：Refrigerant fluid pump；D：Low pressure receiver barrel；P：Refrigerant liquid level in low pressure receiver barrel； 1：Feed liquor Pipe；2：The pump housing (bottom or top that dragging motor can be located at)；3：Gas pressure balancing pipe； 4：Rotor；5：Rotor around Group；6：Power transmission shaft；7：Metal sealing housing；8：Drain pipe；9：Compressor；10：Condenser；11：Choke valve；12：Heat insulation layer； 13：Low pressure receiver barrel shell；14：Liquid refrigerant；15：Evaporator in high-rise storied house refrigerating system；16：Compressor Low pressure muffler；17：Compressor high-pressure exhaust pipe.
Embodiment
By being changed into liquid refrigerant after refrigerant system condenser 10, after being kept in into low pressure receiver barrel D, due to Its outsourcing heat insulation layer, liquid refrigerant will not absorb heat evaporation in this intermediate transition container, only when it is by refrigerant fluid pump After B is pumped into high-rise building evaporator 15, normal heat absorption explosive evaporation refrigeration work can be just carried out with heat exchange with outside；From steaming Hair device 15 comes and into low pressure receiver barrel D gaseous refrigerant, its air velocity slows down suddenly, wherein not yet evaporating Vaporization and remaining liquid refrigerant is dropped into the refrigerant liquid level P of bottom by the gravity of itself, afterwards, become pure Gaseous refrigerant will continue to by the form of high velocity air by the inspiration of low pressure muffler 16 of compressor 9.
The gaseous refrigerant high velocity air formed in low pressure muffler 16, can produce very big " pressure drop ", cause low pressure " pressure drop " at liquid storage barrel D tops to the air entry position both ends of compressor 9 can be very big, therefore, low pressure receiver barrel The pressure on D tops can be higher than the air entry position of compressor 9, it is clear that low pressure muffler 16 is close to the air entry position of compressor 9 Neighbouring extracting force is maximum, it will much larger than the extracting force on low pressure receiver barrel D tops.--- the present invention can be into A vertical crucial technical basis.
The metal sealing housing 7 that refrigerant fluid pump B is formed due to existing is (real to the pump housing 2 therein and both dragging motors Apply the hermetically sealed of solid), this has just blocked the liquid refrigerant in the pump housing 2 to leak by force at the axle envelope of power transmission shaft 6 (to ooze Leakage) after enter back into the path that airspace causes refrigerant to waste, and mainly worked caused electric heating measuring by rotor windings 5 And this two vaporization key elements for promoting its above-mentioned leakage fluid state refrigerant of importing heat of extraneous higher temperature, that is, allow the leakage And the liquid refrigerant inside metal sealing housing 7 is entered with regard in situ evaporating completely into gaseous refrigerant (in general liquid Refrigerant belongs to easy gasifying liquid), then the gas pressure balancing pipe 3 by the top of metal sealing housing 7, by near pressure The low pressure muffler 16 of the air entry of contracting machine 9 reclaims；Obviously：The powerful suction strength degree of the air entry of compressor 9 also can be bigger Promote the vaporization of the above-mentioned liquid refrigerant leaked from the pump housing 2 in degree, and：
From another perspective, interface distance compressor 9 of the gas pressure balancing pipe 3 on compressor low pressure muffler 16 Air entry is nearer, along with being encountered by suction refrigerant in high velocity air state (the more big then pressure of flow velocity is lower) again herein, Both key element can more cause the gas pressure balancing pipe 3, and the pressure in interface more can be close to whole refrigeration system in this place The minimum position of middle pressure, this liquid refrigeration for being just and then promoting the axle envelope position formed by the pump housing 2 and power transmission shaft 6 to leak Agent, it is vaporized under very low pressure condition (the more low refrigerant vaporization more easily promoted as effumability liquid of pressure) Refrigerant gas and by the air entry of compressor 9 in time with high reliability recovery create condition.
Obviously, the key for the full-sealing technique that the present invention is implemented by metal welding manner is：Thoroughly solves refrigeration The problem of agent liquid pump external leakage of refrigerant, is (between refrigerant molecules can not be between the smaller metallic molecule of penetration ratio its diameter Gap), as long as refrigerant fluid pump B will not be to the airspace leakage of refrigerant in the external world, this is just to use refrigeration system at low cost Create condition；Meanwhile among the refrigeration system by Fig. 2 signals, not only do not need " water " this secondary cold (heat energy) to transmit The equipment (scale treatment in water pipe is all quite bothersome all the time) of coolant media and its correlation, and due to The setting height and refrigerant fluid pump B of the evaporator 15 of highest point in high-rise or Super High building refrigerated air-conditioning system Lift it is relevant, as refrigerant in evaporator 15 directly externally evaporation endothermic (refrigeration) setting highly can realize it is " non- The degree of often height " creates condition again.
It has been said that conform generally to national standard air pump (such as：The compressor air pump used in refrigerator) continue without maintenance Working time (when service factor 50% --- start with downtime half-and-half) can be more than 15 years, and the height produced in the world Quality liquid pump (the heretofore described liquid refrigerant pump housing 2) also can be more than 15 years without the continuous working period of maintenance.

Claims (2)

1. a kind of application process of full sealing type refrigerant fluid pump in high-rise building refrigerated air-conditioning system, the i.e. refrigerant liquid Pump (B) to connect method to outer tube as follows：
The low pressure feed tube (1) of refrigerant fluid pump (B) is connected to the bottom position or low of the low pressure receiver barrel (D) of adapted Press the position of liquid storage barrel (D) inner refrigerant liquid level (P) below；
The high pressure drain pipe (8) of refrigerant fluid pump (B) is connected to the entrance point of refrigeration system evaporator (15)；
The gas pressure balancing pipe (3) on refrigerant fluid pump (B) top, which is connected to, leaves the nearest position of compressor (9) air entry.
2. application side of the full sealing type refrigerant fluid pump according to claim 1 in high-rise building refrigerated air-conditioning system The structure type of the performs device of method, i.e. full sealing type refrigerant fluid pump,
Include in structure：The pump housing (2) and the dragging motor and capsul being made up of rotor (4) and rotor windings (5) Body (7), the pump housing (2) and is sealed in a seal casinghousing (7) with dragging motor, and the seal casinghousing (7) enters provided with low pressure (3) three liquid pipe (1), high pressure drain pipe (8) and gas pressure-equalizing pipe pipe joints；
Described seal casinghousing (7) refers to the gold sealed by metal welding completely cut off completely with outside air formed by metal Belong to closed container；
The interface tube of described gas pressure balancing pipe (3) is connection by seal casinghousing (7) and the pump housing (2) and dragging motor Between the top of cavity space that is formed；
The interface tube of described low pressure feed tube (1) is through cavity space above-mentioned in seal casinghousing (7) and the pump housing (2) What the feed liquor mouth of pipe was connected；
The interface tube of described high pressure drain pipe (8) is through cavity space above-mentioned in seal casinghousing (7) and the pump housing (2) What drain pipe mouth was connected.
CN201711061137.8A 2017-11-02 2017-11-02 A kind of refrigerated air-conditioning system Pending CN107763902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711061137.8A CN107763902A (en) 2017-11-02 2017-11-02 A kind of refrigerated air-conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711061137.8A CN107763902A (en) 2017-11-02 2017-11-02 A kind of refrigerated air-conditioning system

Publications (1)

Publication Number Publication Date
CN107763902A true CN107763902A (en) 2018-03-06

Family

ID=61271996

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711061137.8A Pending CN107763902A (en) 2017-11-02 2017-11-02 A kind of refrigerated air-conditioning system

Country Status (1)

Country Link
CN (1) CN107763902A (en)

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Application publication date: 20180306

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