WO2021012332A1 - 一种可全热回收并精确调节热回收量的空调*** - Google Patents

一种可全热回收并精确调节热回收量的空调*** Download PDF

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WO2021012332A1
WO2021012332A1 PCT/CN2019/100976 CN2019100976W WO2021012332A1 WO 2021012332 A1 WO2021012332 A1 WO 2021012332A1 CN 2019100976 W CN2019100976 W CN 2019100976W WO 2021012332 A1 WO2021012332 A1 WO 2021012332A1
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way valve
port
heat exchanger
heat recovery
indoor
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PCT/CN2019/100976
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English (en)
French (fr)
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游永生
杨亚华
易博
戴德平
任洋
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南京天加环境科技有限公司
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Publication of WO2021012332A1 publication Critical patent/WO2021012332A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the invention relates to an air-conditioning system, in particular to an air-conditioning system that can realize condensation heat recovery, in particular to an air-conditioning system that can recover total heat and precisely adjust the amount of heat recovery.
  • the purpose of the present invention is to address the shortcomings of the prior art and provide an air conditioning system that can recover total heat and accurately adjust the amount of heat recovery.
  • the heat recovery can be performed by transferring the condensation heat of the outdoor unit to the room, which not only realizes total heat recovery, but also Moreover, the recovered heat can be precisely adjusted as required, which effectively improves the energy efficiency ratio of the unit.
  • An air conditioning system capable of full heat recovery and precise adjustment of heat recovery, including an outdoor unit and an indoor unit, the outdoor unit including a compressor, a main four-way valve, an auxiliary four-way valve, an outdoor heat exchanger and a gas-liquid separator;
  • the indoor unit includes a first indoor heat exchanger and a second indoor heat exchanger;
  • the outdoor heat exchangers are two or more connected in parallel; the liquid pipe ends of the first indoor heat exchanger and the second indoor heat exchanger are connected in parallel and connected to the outlet of the outdoor heat exchanger through the liquid pipe ,
  • the air pipe ends are respectively connected to the E port of the main four-way valve and the C port of the auxiliary four-way valve; the D port of the main four-way valve and the D port of the auxiliary four-way valve are connected in parallel to the The exhaust port of the compressor;
  • the inlet of the gas-liquid separator is respectively connected to the S port of the main four-way valve, the S port and the E port of the auxiliary four-way valve, and the outlet is connected to the suction port of the compressor;
  • each outdoor heat exchanger is respectively provided with an electric ball valve or a solenoid valve;
  • the liquid pipe ends of the first indoor heat exchanger and the second indoor heat exchanger are respectively provided with electronic expansion valves.
  • the exhaust port of the compressor is provided with a first one-way valve.
  • a second one-way valve is provided on the liquid pipe.
  • the invention has reasonable design, simple structure and convenient control.
  • the heat recovery can be carried out by transferring the condensation heat of the outdoor unit to the room. It can not only realize full heat recovery, but also can accurately adjust the recovered heat as required, which effectively improves the unit's performance Energy efficiency ratio.
  • Figure 1 is a schematic diagram of the system structure of the present invention.
  • Figure 2 is a schematic diagram of the refrigerant flow in the cooling operation + partial heat recovery mode of the present invention.
  • Fig. 3 is a schematic diagram of the refrigerant flow in the cooling operation + total heat recovery mode of the present invention.
  • 1- compressor 1- compressor; 2- first check valve; 3- main four-way valve; 4- auxiliary four-way valve; 5- electric ball valve; 6-solenoid valve; 7- second one-way valve; 8- outdoor Heat exchanger; 9-electronic expansion valve; 10-first indoor heat exchanger; 11-second indoor heat exchanger; 12-gas-liquid separator.
  • An air conditioning system capable of full heat recovery and precise adjustment of heat recovery, including an outdoor unit and an indoor unit.
  • the outdoor unit includes a compressor 1, a main four-way valve 3, an auxiliary four-way valve 4, an outdoor heat exchanger 8 and an air Liquid separator 12;
  • the indoor unit includes a first indoor heat exchanger 10 and a second indoor heat exchanger 11.
  • the inlet end of one of the outdoor heat exchangers is equipped with an electric ball valve 5 to adjust the flow of refrigerant flowing into the outdoor heat exchanger; the inlet end of the other outdoor heat exchangers is equipped with a solenoid valve 6 that can open and close the inlet end and control The refrigerant flows into these outdoor heat exchangers.
  • the liquid pipe ends of the first indoor heat exchanger 10 and the second indoor heat exchanger 11 are connected in parallel and connected to the outlet of the outdoor heat exchanger 8 through the liquid pipe, and the gas pipe ends are respectively connected to the main cross
  • the E port of the valve 3 and the C port of the auxiliary four-way valve 4; the D port of the main four-way valve 3 and the D port of the auxiliary four-way valve 4 are connected in parallel to the exhaust port of the compressor 1 .
  • the inlet of the gas-liquid separator 12 is respectively connected to the S port of the main four-way valve 3, the S port and the E port of the auxiliary four-way valve 4, and its outlet is connected to the suction port of the compressor 1 .
  • the liquid pipe ends of the first indoor heat exchanger 10 and the second indoor heat exchanger 11 are respectively provided with an electronic expansion valve 9 to adjust the flow of the refrigerant flowing therethrough, thereby controlling the heat exchange of evaporation or condensation.
  • the exhaust port of the compressor 1 is provided with a first one-way valve 2, which can prevent refrigerant from flowing back into the exhaust port.
  • the liquid pipe is provided with a second one-way valve 7, which can prevent the refrigerant in the liquid pipe from flowing backward.
  • the operation process of the present invention includes:
  • Refrigeration operation + partial heat recovery As shown in Figure 2, the refrigerant is discharged from the discharge port of the compressor and divided into two paths. One path flows through the C port of the main four-way valve and then flows through the outdoor heat exchanger, and the other path flows through the C port of the auxiliary four-way valve. After passing through the second indoor heat exchanger, the two-way refrigerant merges and flows into the first indoor heat exchanger, and then flows into the gas-liquid separator through the E and S ports of the main four-way valve, and finally returns to the compressor The suction port to complete the cycle.
  • the electric ball valve is opened, and one of the two solenoid valves is closed, so that the outdoor heat exchanger partly participates in the work and adjusts the outdoor heat exchange so as to meet the needs of indoor heat recovery.
  • the first indoor heat exchanger acts as an evaporator, so that the refrigerant in it absorbs heat and evaporates.
  • the second indoor heat exchanger is used as a condenser to dissipate heat and condense the refrigerant.
  • the electronic expansion valves on the two indoor heat exchangers the heat exchange of evaporation and condensation is controlled to realize partial heat recovery.
  • the amount of heat recovery can be precisely adjusted by adjusting the opening degree of the electric ball valve.
  • Refrigeration operation + total heat recovery As shown in Figure 3.
  • the refrigerant is discharged from the compressor exhaust port, flows into the second indoor heat exchanger through the C port of the auxiliary four-way valve, and then flows through the first indoor heat exchanger, and passes through the E and S ports of the main four-way valve. Flow into the gas-liquid separator, and finally return to the suction port of the compressor to complete the cycle.
  • the electric ball valve and the solenoid valve are all closed, so that the second indoor heat exchanger completely acts as a condenser, and all the heat in the refrigerant is used for indoor reheating to realize total heat recovery.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

本发明涉及一种可全热回收并精确调节热回收量的空调***，包括室外机和室内机，所述室外机包括压缩机、主四通阀、辅四通阀、室外换热器和气液分离器；所述室内机包括第一室内换热器和第二室内换热器；所述室外换热器为两个或以上；所述第一室内换热器和第二室内换热器的液管端并接后通过液管与所述室外换热器的出口相连，其气管端分别连接到所述主四通阀的E口和所述辅四通阀的C口；所述主四通阀的D口和辅四通阀的D口并接后连接到所述压缩机的排气口；所述气液分离器的进口分别连接到所述主四通阀的S口、所述辅四通阀的S口和E口，其出口连接到所述压缩机的吸气口；每个所述室外换热器的进口端分别设有电动球阀或电磁阀。可实现全热回收。

Description

一种可全热回收并精确调节热回收量的空调*** 技术领域
本发明涉及一种空调***，尤其是一种可以实现冷凝热回收的空调***，具体的说是一种可全热回收并精确调节热回收量的空调***。
背景技术
当前在所有的行业均在平衡节能性，对于中央空调应用亦是如此，能耗是很大的制约性。在医院、手术室、动物房等方面直膨***的应用中，普遍的设计理念是：先进行露点温度除湿，然后通过电加热再热升至需求温度。但是，这“一冷一热”功率消耗相当严重，不利于节能环保。
目前，常见的空调***大都是在室内机中设置单独***来实现全热回收，但是，其热回收量不可调节，容易造成***波动，控制精度不高，难以适应市场需求。
发明内容
本发明的目的是针对现有技术的不足，提供一种可全热回收并精确调节热回收量的空调***，可通过转移室外机冷凝热至室内来进行热量回收，不仅可实现全热回收，而且，还可根据需要对回收热量进行精准调节，有效提高了机组的能效比。
本发明的技术方案是：
一种可全热回收并精确调节热回收量的空调***，包括室外机和室内机，所述室外机包括压缩机、主四通阀、辅四通阀、室外换热器和气液分离器；所述室内机包括第一室内换热器和第二室内换热器；
所述室外换热器为两个或以上，并联连接；所述第一室内换热器和第二室内换热器的液管端并接后通过液管与所述室外换热器的出口相连，其气管端分别连接到所述主四通阀的E口和所述辅四通阀的C口；所述主四通阀的D口和辅四通阀的D口并接后连接到所述压缩机的排气口；
所述气液分离器的进口分别连接到所述主四通阀的S口、所述辅四通阀的S口和E口，其出口连接到所述压缩机的吸气口；
每个所述室外换热器的进口端分别设有电动球阀或电磁阀；
所述第一室内换热器和第二室内换热器的液管端分别设有电子膨胀阀。
进一步的，所述电动球阀为一个，所述电磁阀为多个。
进一步的，所述压缩机的排气口设有第一单向阀。
进一步的，所述液管上设有第二单向阀。
本发明的有益效果：
本发明设计合理，结构简单，控制方便，可通过转移室外机冷凝热至室内来进行热量回收，不仅可实现全热回收，而且，还可根据需要对回收热量进行精准调节，有效提高了机组的能效比。
附图说明
图1是本发明的***结构示意图。
图2是本发明在制冷运行+部分热回收模式时的制冷剂流向示意图。
图3是本发明在制冷运行+全热回收模式时的制冷剂流向示意图。
其中：1-压缩机；2-第一单向阀；3-主四通阀；4-辅四通阀；5-电动球阀；6-电磁阀；7-第二单向阀；8-室外换热器；9-电子膨胀阀；10-第一室内换热器；11-第二室内换热器；12-气液分离器。
具体实施方式
下面结合附图和实施例对本发明作进一步的说明。
如图1所示。
一种可全热回收并精确调节热回收量的空调***，包括室外机和室内机，所述室外机包括压缩机1、主四通阀3、辅四通阀4、室外换热器8和气液分离器12；所述室内机包括第一室内换热器10和第二室内换热器11。
所述室外换热器8为两个或以上，并联连接。其中一个室外换热器的进口端设有电动球阀5，以便调节流入该室外换热器的制冷剂流量；其他室外换热器的进口端设有电磁阀6，可以启闭该进口端，控制制冷剂流进这些室外换热器。
所述第一室内换热器10和第二室内换热器11的液管端并接后通过液管与所述室外换热器8的出口相连，其气管端分别连接到所述主四通阀3的E口和所述辅四通阀4的C口；所述主四通阀3的D口和辅四通阀4的D口并接后连接到所述压缩机1的排气口。
所述气液分离器12的进口分别连接到所述主四通阀3的S口、所述辅四通阀4的S口和E口，其出口连接到所述压缩机1的吸气口。
所述第一室内换热器10和第二室内换热器11的液管端分别设有电子膨胀阀9，可以对流经的制冷剂流量进行调节，进而控制蒸发或冷凝的换热量。
所述压缩机1的排气口设有第一单向阀2，可以避免制冷剂回流排气口。
所述液管上设有第二单向阀7，可以避免液管中的制冷剂发生逆流。
本发明的运行过程包括：
1.制冷运行+部分热回收。如图2所示，制冷剂从压缩机的排出口排出，分为两路，一路经主四通阀的C口后流经室外换热器，另一路经辅四通阀的C口后流经第二室内换热器，然后，两路的制冷剂汇合后流入第一室内换热器，再经过主四通阀的E口和S口后流入气液分离器，最后，回流至压缩机的吸气口，完成循环。其中，电动球阀开启，两个电磁阀中的一个关闭，使室外换热器部分参与工作，调节室外换热量，以便满足室内热回收的需要。与此同时，室内第一换热器作为蒸发器，使其中的制冷剂吸热而蒸发。而室内第二换热器作为冷凝器，使其中的制冷剂散热而冷凝。通过控制两室内换热器上的电子膨胀阀，控制蒸发与冷凝的换热量，实现部分热回收。同时，可以通过调节所述电动球阀的开度，对热回收量进行精准调节。
2.制冷运行+全热回收。如图3所示。制冷剂从压缩机排气口排出，经过辅四通阀的C口流入第二室内换热器，再流经第一室内换热器后，经过主四通阀的E口和S口后，流入气液分离器，最后，回流压缩机的吸气口，完成循环。其中，电动球阀和电磁阀全部关闭，使第二室内换热器完全充当冷凝器，将制冷剂中的热量全部用于室内的再热，实现全热回收。
本发明未涉及部分均与现有技术相同或可采用现有技术加以实现。

Claims (4)

  1. 一种可全热回收并精确调节热回收量的空调***，包括室外机和室内机，其特征是：所述室外机包括压缩机、主四通阀、辅四通阀、室外换热器和气液分离器；所述室内机包括第一室内换热器和第二室内换热器；
    所述室外换热器为两个或以上，并联连接；所述第一室内换热器和第二室内换热器的液管端并接后通过液管与所述室外换热器的出口相连，其气管端分别连接到所述主四通阀的E口和所述辅四通阀的C口；所述主四通阀的D口和辅四通阀的D口并接后连接到所述压缩机的排气口；
    所述气液分离器的进口分别连接到所述主四通阀的S口、所述辅四通阀的S口和E口，其出口连接到所述压缩机的吸气口；
    每个所述室外换热器的进口端分别设有电动球阀或电磁阀；
    所述第一室内换热器和第二室内换热器的液管端分别设有电子膨胀阀。
  2. 根据权利要求1所述的可全热回收并精确调节热回收量的空调***，其特征是：所述电动球阀为一个，所述电磁阀为多个。
  3. 根据权利要求1所述的可全热回收并精确调节热回收量的空调***，其特征是：所述压缩机的排气口设有第一单向阀。
  4. 根据权利要求1所述的可全热回收并精确调节热回收量的空调***，其特征是：所述液管上设有第二单向阀。
PCT/CN2019/100976 2019-07-22 2019-08-16 一种可全热回收并精确调节热回收量的空调*** WO2021012332A1 (zh)

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CN111486534A (zh) * 2020-05-19 2020-08-04 福州融翔电气技术有限公司 低功耗恒温恒湿机及其工作方法
CN115789791A (zh) * 2022-10-28 2023-03-14 珠海格力电器股份有限公司 空调***和控制方法

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