CN105928234A - Double-water-temperature cold and hot water unit - Google Patents

Double-water-temperature cold and hot water unit Download PDF

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Publication number
CN105928234A
CN105928234A CN201610523262.5A CN201610523262A CN105928234A CN 105928234 A CN105928234 A CN 105928234A CN 201610523262 A CN201610523262 A CN 201610523262A CN 105928234 A CN105928234 A CN 105928234A
Authority
CN
China
Prior art keywords
water
evaporimeter
compressor
control panel
temperature
Prior art date
Application number
CN201610523262.5A
Other languages
Chinese (zh)
Inventor
李科
张毅
杜军
Original Assignee
上海境元能源科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海境元能源科技有限公司 filed Critical 上海境元能源科技有限公司
Priority to CN201610523262.5A priority Critical patent/CN105928234A/en
Publication of CN105928234A publication Critical patent/CN105928234A/en

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Classifications

    • 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
    • F25B5/00Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion 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
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators
    • 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, plant 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
    • F25B2600/00Control issues
    • F25B2600/21Refrigerant outlet evaporator temperature
    • 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
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention relates to a double-water-temperature cold and hot water unit. The double-water-temperature cold and hot water unit comprises a refrigerant circulation system composed of a compressor, a condenser and evaporators, wherein the two evaporators are connected in parallel. Each evaporator is internally provided with a water path for preparing cold and hot water, and a temperature probe connected with a control panel is arranged at a water returning port of each water path and is capable of measuring the temperature of return water and transmitting the temperature of the return water to the control panel. A refrigerant inlet of each evaporator is provided with an electronic expansion valve. Each electronic expansion valve is further connected with the control panel and can be controlled by the control panel to be started or stopped. The double-water-temperature cold and hot water unit is reasonable in design, simple in structure and convenient to operate and control. One compressor can generate two kinds of refrigerant water with the constant temperature, the cost is greatly reduced, the installing and constructing difficulty is lowered, and a favorable condition is created for popularization of a radiation air conditioner.

Description

A kind of double water temperature water chiller-heater unit
Technical field
The present invention relates to a kind of air-conditioning equipment, a kind of be applicable to radiation air-conditioner, the air-conditioner set of two kinds of water temperatures can be prepared simultaneously, a kind of double water temperature water chiller-heater unit.
Background technology
Along with the development of society, radiant type air-conditioning is the most increasingly widespread.Air-conditioning system generally needs the chilled water of two kinds of different temperatures, a kind of water at low temperature (about 7 DEG C) and a kind of high-temperature water (about 16 DEG C).Existing method is generally based on serial plate type heat exchanger or turbid water system realizes preparing the chilled water of two kinds of temperature, but line system is complicated, auxiliary equipment is many, if desired for water tank, triple valve and actuator etc., considerably increase difficulty of construction, also make cost increase more, cause air-conditioning system range of application limited.Accordingly, it would be desirable to a kind of simple in construction of design, the most double water temperature unit of manipulation, meet use demand.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of double water temperature water chiller-heater unit, simple in construction, manipulation is convenient, improves using impression greatly.Meanwhile, cost is relatively low, and installation difficulty is low, can be that the popularization of radiation air-conditioner creates favorable conditions.
The technical scheme is that
A kind of double water temperature water chiller-heater unit, including the coolant circulating system being made up of compressor, condenser and evaporimeter, described evaporimeter is in parallel two;It is provided with the water route preparing hot and cold water in each evaporimeter, and the water return outlet in described water route is provided with a temp probe being connected with control panel, it is possible to measure return water temperature, and be transferred to control panel;An electric expansion valve it is equipped with at the refrigerant inlet of each evaporimeter;Each electric expansion valve is connected with described control panel the most respectively, it is possible to carried out switching motion respectively by the control of described control panel.
Further, described compressor is digital vortex variable conpacitance compressor.
Further, the porch that said two evaporimeter is in parallel is provided with the bypass line connecting described compressor air suction mouth, it is possible to make unnecessary refrigerant directly flow back to compressor
Beneficial effects of the present invention:
The present invention is reasonable in design, simple in construction, and manipulation is convenient, it is achieved that a compressor can produce the chilled water of two kinds of temperature constant, greatly reduces cost, simplifies installation and difficulty of construction, and the popularization for radiation air-conditioner creates advantage.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the present invention.
Wherein: 1-condenser;2-blower fan;3-compressor;4-control panel;5-the first electric expansion valve;6-the first evaporimeter;7-the first temp probe;8-the second temp probe;9-the second evaporimeter;10-the second electric expansion valve.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1.
A kind of double water temperature water chiller-heater unit, including compressor 3, condenser the 1, first evaporimeter 6 and the second evaporimeter 9.Wherein, the gas outlet of described compressor 3 is connected with the entrance of described condenser 1, and arranges blower fan 2 on condenser 1, and preferably and air carries out heat exchange to enable the refrigerant of inflow.Described first evaporimeter 6 is connected with the outlet of described condenser 1 and the air entry of described compressor 3 respectively with the entrance and exit after the second evaporimeter 9 parallel connection, thus constitutes medium circulation pipeline.Meanwhile, the entrance after described first evaporimeter 6 and the second evaporimeter 9 parallel connection is connected to the air entry of compressor 3 also by a bypass line, and unnecessary refrigerant can be made to flow directly into compressor 3.Be respectively equipped with the water route preparing hot and cold water in each evaporimeter, and be provided with water return outlet and the delivery port in described water route on an evaporator, supply water flow out into.It is respectively equipped with the first temp probe 7 and the second temp probe 8, it is possible to measure the return water temperature of two water return outlets in real time at the water return outlet of described first evaporimeter 6 and the second evaporimeter 9.Meanwhile, described first temp probe 7 is connected with the control panel 4 in unit respectively with the second temperature spy 8 so that it is the return water temperature information detected can be transferred to control panel 4.It is respectively equipped with the first electric expansion valve 5 and the second electric expansion valve 10 at the refrigerant inlet of described first evaporimeter 6 and the second evaporimeter 9, can control to flow into the coolant quantity of evaporimeter respectively.Described first electric expansion valve 5 and the second electric expansion valve 10 are also respectively connected on control panel 4, make control panel 4 can control the keying of associated electrical expansion valve, flow into the refrigerant input quantity of evaporimeter with regulation.Described control panel 4 is in addition to having the function of existing control unit work, the temperature information that can also transmit according to two temp probes, and the temperature parameter set, control the keying of said two electric expansion valve, regulation flows into the refrigerant input quantity of different evaporators, and then controlling the temperature of each evaporimeter water outlet, it is ensured that two evaporimeters water temperature out is different, and stable in outlet water temperature.Further, described compressor 3 is digital vortex variable conpacitance compressor, and such as, paddy wheel board ZRD61KC-TFD type digital scroll compressor, internal structure uses vortex rotating disk, simpler than general frequency-changeable compressor structure, makes operation more efficient.
The working method of the present invention is: refrigerant is from the exhaust outlet of compressor out, liquid is become after condensed device, entering the first evaporimeter and the second evaporimeter the most respectively after the first electric expansion valve and the second electric expansion valve, the water made in evaporimeter in water route by heat exchange is cooled down or is heated.Then, refrigerant flows out from evaporimeter, flows into the air entry of compressor, completes the circular flow of refrigerant.Under summer operation pattern, it usually needs prepare two kinds of cold water of 7 DEG C and 16 DEG C to indoor radiation air-conditioner end system.Now, in the controller the temperature parameter of the first evaporimeter delivery port can be set as 7 DEG C, the outlet temperature parameter of the second evaporimeter is set as 16 DEG C.Control panel receives the return water temperature detected from the first temp probe and the second temp probe, calculate the difference between this temperature and design temperature, instruction is sent the most respectively to the first electric expansion valve and the second electric expansion valve, control the opening and closing time of associated electrical expansion valve, it is precisely controlled inflow the first evaporimeter and the coolant quantity of the second evaporimeter, the refrigeration and the heating capacity that enable each evaporimeter meet needs just, it is ensured that leaving water temperature is consistent with design temperature.In the process, unnecessary refrigerant can directly flow back to compressor by bypass line, it is ensured that the safe operation of unit.In the winter time under heating mode, in the controller the temperature parameter of the first evaporimeter delivery port can be set as 32 DEG C, the outlet temperature parameter of the second evaporimeter is set as 40 DEG C, other runnings are identical with summer mode.
The present invention can use refrigerant R410A.Described electric expansion valve uses ALCO board EX8-M type.
Part that the present invention does not relate to is the most same as the prior art maybe can use prior art to be realized.

Claims (3)

1. double water temperature water chiller-heater unit, including the coolant circulating system being made up of compressor, condenser and evaporimeter, is characterized in that described evaporimeter is in parallel two;It is provided with the water route preparing hot and cold water in each evaporimeter, and the water return outlet in described water route is provided with a temp probe being connected with control panel, it is possible to measure return water temperature, and be transferred to control panel;An electric expansion valve it is equipped with at the refrigerant inlet of each evaporimeter;Each electric expansion valve is connected with described control panel the most respectively, it is possible to carried out switching motion respectively by the control of described control panel.
The most according to claim 1 pair of water temperature water chiller-heater unit, is characterized in that described compressor is digital vortex variable conpacitance compressor.
The most according to claim 1 pair of water temperature water chiller-heater unit, is characterized in that the porch of said two evaporimeter parallel connection is provided with the bypass line connecting described compressor air suction mouth, it is possible to make unnecessary refrigerant directly flow back to compressor.
CN201610523262.5A 2016-07-06 2016-07-06 Double-water-temperature cold and hot water unit CN105928234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610523262.5A CN105928234A (en) 2016-07-06 2016-07-06 Double-water-temperature cold and hot water unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610523262.5A CN105928234A (en) 2016-07-06 2016-07-06 Double-water-temperature cold and hot water unit

Publications (1)

Publication Number Publication Date
CN105928234A true CN105928234A (en) 2016-09-07

Family

ID=56826982

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610523262.5A CN105928234A (en) 2016-07-06 2016-07-06 Double-water-temperature cold and hot water unit

Country Status (1)

Country Link
CN (1) CN105928234A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1715807A (en) * 2004-07-01 2006-01-04 清华大学 Double temperature cold water unit for air conditioning system
CN101089518A (en) * 2006-06-12 2007-12-19 扬州辛普森中央空调制造有限公司 Air-cooled water-cooled two-evaporimeter hot-water machine set
CN101251282A (en) * 2008-04-03 2008-08-27 东南大学 Water chilling unit based on hot moisture independent process as well as air-treatment method thereof
CN101694329A (en) * 2009-10-13 2010-04-14 上海朗诗建筑科技有限公司 Dual-working condition heat pump cold hot water machine unit of parallel evaporator
CN101876496A (en) * 2009-11-06 2010-11-03 清华大学 Double-evaporator direct-fired absorption refrigerating and heating unit
EP2620711A2 (en) * 2012-01-30 2013-07-31 Mitsubishi Electric Corporation Heat Source Unit Control System
CN204629853U (en) * 2015-04-22 2015-09-09 广东美的暖通设备有限公司 Air-to-water heat pump and control device thereof
CN205807893U (en) * 2016-07-06 2016-12-14 上海境元能源科技有限公司 A kind of double water temperature water chiller-heater unit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1715807A (en) * 2004-07-01 2006-01-04 清华大学 Double temperature cold water unit for air conditioning system
CN101089518A (en) * 2006-06-12 2007-12-19 扬州辛普森中央空调制造有限公司 Air-cooled water-cooled two-evaporimeter hot-water machine set
CN101251282A (en) * 2008-04-03 2008-08-27 东南大学 Water chilling unit based on hot moisture independent process as well as air-treatment method thereof
CN101694329A (en) * 2009-10-13 2010-04-14 上海朗诗建筑科技有限公司 Dual-working condition heat pump cold hot water machine unit of parallel evaporator
CN101876496A (en) * 2009-11-06 2010-11-03 清华大学 Double-evaporator direct-fired absorption refrigerating and heating unit
EP2620711A2 (en) * 2012-01-30 2013-07-31 Mitsubishi Electric Corporation Heat Source Unit Control System
CN204629853U (en) * 2015-04-22 2015-09-09 广东美的暖通设备有限公司 Air-to-water heat pump and control device thereof
CN205807893U (en) * 2016-07-06 2016-12-14 上海境元能源科技有限公司 A kind of double water temperature water chiller-heater unit

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Application publication date: 20160907