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WO2019128519A1 - Air conditioner system - Google Patents

Air conditioner system Download PDF

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Publication number
WO2019128519A1
WO2019128519A1 PCT/CN2018/115750 CN2018115750W WO2019128519A1 WO 2019128519 A1 WO2019128519 A1 WO 2019128519A1 CN 2018115750 W CN2018115750 W CN 2018115750W WO 2019128519 A1 WO2019128519 A1 WO 2019128519A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
air conditioner
conditioner system
refrigerant
throttle device
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.)
Ceased
Application number
PCT/CN2018/115750
Other languages
French (fr)
Chinese (zh)
Inventor
王飞
付裕
罗荣邦
许文明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
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 Qingdao Haier Air Conditioner Gen Corp Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to EP18896327.6A priority Critical patent/EP3734193A4/en
Priority to JP2020535566A priority patent/JP2021508024A/en
Publication of WO2019128519A1 publication Critical patent/WO2019128519A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves

Definitions

  • the invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner system.
  • the existing air conditioner system usually forms a refrigeration/heating cycle by a condenser, a throttle device, an evaporator, and a compressor, and the high temperature and high pressure gaseous refrigerant discharged from the compressor is condensed into a low temperature and high pressure liquid in the condenser, and is throttled.
  • the device is throttled into a low temperature and low pressure liquid, and then enters the evaporator to absorb heat and evaporate to complete a refrigeration/heating cycle.
  • the high-temperature and high-pressure gaseous refrigerant forms a low-temperature and high-pressure liquid refrigerant after heat exchange through the condenser, and then throttling and depressurization through the throttling device to form a low-temperature low-pressure gas-liquid two-phase zone refrigerant to enter the evaporation.
  • Heat exchange The larger the evaporation area, the higher the relative evaporation capacity. Among them, the low temperature and high pressure liquid refrigerant will increase the degree of subcooling if it continues to exotherm, thereby increasing the cooling capacity of the system cycle.
  • the refrigerant When the refrigerant is in heat exchange, more than 95% of the heat exchange is derived from the latent heat of vaporization in the two-phase region, while the isobaric specific heat capacity of the unidirectional zone (pure liquid, pure gas) is relatively small, and the heat exchange capacity accounts for the total system.
  • the proportion of the loop is small.
  • the pressure drop of the gaseous refrigerant in the pipeline is large, which is the main source of the system cyclic pressure loss, which will increase the circulating work volume, that is, increase the energy consumption of the system cycle.
  • FIG. 3 is a cycle schematic diagram of a conventional air conditioner during heating operation.
  • the actual operating temperature of the air conditioner heating operation is generally: A point high temperature gaseous 70 ° C refrigerant, enter the indoor heat exchanger and 20 ° C indoor environment for heat exchange, the temperature is reduced to 30 ° C, flow through After the line tube enters the throttling device, the temperature between point B and the throttling device (about 30 ° C) is much higher than the outdoor ambient temperature of 7 ° C, and the waste heat is wasted. If the residual heat is absorbed and utilized, the system cycle can be increased. Too cold.
  • the air conditioner system in order to improve the heating cycle effect of the air conditioner, includes a compressor, an indoor heat exchanger, a first throttle device, and an outdoor unit connected in series in the main circuit. a heat exchanger, wherein the main circuit is further provided with a heat exchanger; one side of the heat exchanger is connected to a first pipeline between the first throttle device and the indoor heat exchanger, The other side of the heat exchanger is connected to a second line between the first throttle device and the outdoor heat exchanger; and the refrigerant passing through the first line and the refrigerant passing through the second line
  • the refrigerant can exchange heat in the heat exchanger.
  • the first conduit passes through one side of the heat exchanger and/or the second conduit passes through the other side of the heat exchanger.
  • a second throttle device is further disposed in the main circuit, and the second throttle device is located between the heat exchanger and the indoor heat exchanger. In the pipeline section.
  • the second throttle device when the air conditioner system is operating in heating, the second throttle device is in a fully open state, and the first throttle device is used for refrigerant throttling.
  • the first throttle device when the air conditioner system is in a cooling operation, the first throttle device is in a fully open state, and the second throttle device is used to throttle the refrigerant.
  • the compressor is provided with a gas-liquid separator, and the refrigerant passes through the gas-liquid separator and is returned to the compressor.
  • the air conditioner system further includes a mode switching device for switching the air conditioner system between a cooling mode and a heating mode.
  • the mode switching device is a four-way valve.
  • a heat exchanger is added to the air conditioner system, and two sides of the heat exchanger are respectively connected to the first pipeline and the second pipeline, so that the refrigerant in the first pipeline is And the refrigerant in the second pipeline can exchange heat at the heat exchanger, which not only effectively increases the degree of subcooling of the refrigerant in the first pipeline, but also promotes evaporation of the refrigerant in the second pipeline, thereby Increased system heat.
  • the air conditioner of the present invention also uses the second throttle device to replace the first throttle device when the air conditioner is switched to the cooling mode by setting the second throttle device (at this time, the first throttle device is at The fully open state is to throttle the refrigerant, thereby avoiding the phenomenon that the cooling capacity is reduced when the refrigeration cycle occurs.
  • FIG. 1 is a schematic structural view of a first embodiment of an air conditioner system of the present invention
  • Figure 2 is a schematic structural view of a second embodiment of the air conditioner system of the present invention.
  • Fig. 3 is a schematic diagram of the cycle of a conventional air conditioner during heating operation.
  • Fig. 1 is a schematic structural view of a first embodiment of an air conditioner system of the present invention.
  • the air conditioner system of the present invention includes a compressor 1 connected in series in the main circuit, an indoor heat exchanger 2, a first throttle device 3, and an outdoor heat exchanger 4, and heat is also disposed in the main circuit.
  • Switch 5 the pipeline between the first throttle device 3 and the indoor heat exchanger 2 is used as the first pipeline M, and the pipeline between the first throttle device 3 and the outdoor heat exchanger 4 is used as the second conduit.
  • the pipe N, one side of the heat exchanger 5 is connected to the first pipe M, and the other side of the heat exchanger 5 is connected to the second pipe N, as shown in FIG.
  • the first pipe M Passing through one side of the heat exchanger 5 the second line N passes through the other side of the heat exchanger N. Further, the refrigerant passing through the first line M and the refrigerant passing through the second line N can exchange heat in the heat exchanger 5.
  • the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 flows to the indoor heat exchanger 2, and performs heat exchange in the indoor heat exchanger 2 to become a low-temperature high-pressure liquid refrigerant, and the refrigerant passes along the first pipeline.
  • M reaches point C, at which time the temperature of the refrigerant is around 20 ° C (the heat here is not fully utilized for waste heat).
  • the refrigerant enters the second line N after being throttled by the first throttle device 3, and the temperature of the refrigerant at the point D (after the throttled refrigerant) is about 5 °C.
  • the refrigerant in the first line M and the refrigerant in the second line N have a temperature difference, and both pass through the heat exchanger 5, the refrigerant in the first line M and the second line N are The heat exchange of the refrigerant at the heat exchanger 5 not only effectively increases the degree of subcooling of the refrigerant in the first line M (ie, the portion of the refrigerant from the point C to the first throttle device 3 continues to radiate and cool down), Moreover, the evaporation of the refrigerant in the second pipe N can be promoted (that is, the low-temperature refrigerant at the point D can evaporate and absorb the heat of the residual heat at the point C, which is equivalent to increasing the evaporation area and effectively improving the heat exchange capacity). Thereby increasing the heating capacity of the system.
  • the refrigerant in the first pipeline M is subjected to heat exchange in the heat exchanger 5 and then enters the first throttle device 3 to form a gas-liquid two-phase region of low temperature and low pressure at point D, and then passes through the outdoor
  • the heat exchanger 4 is returned to the compressor 1.
  • the heat exchanger 5 in the above may be a water tank containing water or any other suitable form as long as the refrigerant upstream and downstream of the first throttle device 3 can be exchanged.
  • the above design can effectively increase the heating capacity for the heating cycle and reduce the cooling capacity for the refrigeration cycle.
  • the air conditioner system of the present invention further includes a mode switching device (such as the four-way valve Q in FIG. 1) for switching the air conditioner system between the cooling mode and the heating mode.
  • a mode switching device such as the four-way valve Q in FIG. 1 for switching the air conditioner system between the cooling mode and the heating mode.
  • Fig. 2 is a structural schematic diagram of a second embodiment of the air conditioner system of the present invention.
  • a second throttle device 6 is further disposed in the main circuit of the air conditioner system of the present invention, and the second throttle device 6 is located in the first tube between the heat exchanger 5 and the indoor heat exchanger 2.
  • the second throttle device 6 is in a fully open state, and the first throttle device 3 is used for refrigerant throttling.
  • the principle of the air conditioner system in the first embodiment is the same.
  • the first throttle device 3 When the air conditioner system is switched to the cooling operation by the four-way valve Q, the first throttle device 3 is in the fully open state, and the second throttle device 6 is used for the refrigerant throttling. At this time, the refrigerant on both sides of the heat exchanger 5 has almost no temperature difference, that is, the heat exchanger 5 does not function during the refrigeration cycle, and the entire refrigeration cycle is a conventional refrigeration cycle, thereby avoiding a reduction in the amount of refrigeration during the cooling operation.
  • the compressor 1 is provided with a gas-liquid separator 11, and the gaseous refrigerant entering the compressor 1 first passes through the gas-liquid separator 11, and is then sucked by the compressor 1, thereby opening the next cycle. .
  • a heat exchanger is added to the air conditioner system of the present invention, and two sides of the heat exchanger are respectively connected to the first pipeline and the second pipeline, so that the refrigerant in the first pipeline is obtained.
  • the refrigerant in the second pipeline can exchange heat at the heat exchanger, which not only effectively increases the degree of subcooling of the refrigerant in the first pipeline, but also promotes evaporation of the refrigerant in the second pipeline, thereby Increased system heat.
  • the air conditioner of the present invention also uses the second throttle device to replace the first throttle device when the air conditioner is switched to the cooling mode by setting the second throttle device (at this time, the first throttle device is at The fully open state is to throttle the refrigerant, thereby avoiding the phenomenon that the cooling capacity is reduced when the refrigeration cycle occurs.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

An air conditioner system, comprising a compressor (1), an indoor heat exchanger (2), a first throttling apparatus (3), and an outdoor heat exchanger (4) connected in series in a main loop. A heat exchanger (5) is further provided in the main loop; one side of the heat exchanger (5) is connected to a first pipeline (M) between the first throttling device (3) and the indoor heat exchanger (2), and the other side of the heat exchanger (5) is connected to a second pipeline (N) between the first throttling device (3) and the outdoor heat exchanger (4); a refrigerant passing through the first pipeline (M) and a refrigerant passing through the second pipeline (N) can carry out heat exchange in the heat exchanger (5). Therefore, not only the degree of supercooling of the refrigerant in the first pipeline (m) is effectively increased, evaporation of the refrigerant of the second pipeline (n) can be promoted, and thus the heating capacity of the system is improved.

Description

空调器系统Air conditioner system 技术领域Technical field

本发明属于空调器技术领域，具体涉及一种空调器系统。The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner system.

背景技术Background technique

现有的空调器系统通常由冷凝器、节流装置、蒸发器、压缩机形成制冷/制热循环回路，压缩机排出的高温高压气态冷媒在冷凝器中凝结成低温高压液体，并经节流装置节流成低温低压液体，然后进入蒸发器吸热蒸发，完成一个制冷/制热循环。The existing air conditioner system usually forms a refrigeration/heating cycle by a condenser, a throttle device, an evaporator, and a compressor, and the high temperature and high pressure gaseous refrigerant discharged from the compressor is condensed into a low temperature and high pressure liquid in the condenser, and is throttled. The device is throttled into a low temperature and low pressure liquid, and then enters the evaporator to absorb heat and evaporate to complete a refrigeration/heating cycle.

空调器在制热运行时，高温高压的气态冷媒在经过冷凝器换热后，形成低温高压的液态冷媒，而后经过节流装置节流降压，形成低温低压气液两相区冷媒，进入蒸发器换热。蒸发面积越大，则相对蒸发能力越高。其中，低温高压的液态冷媒如果继续放热会增加过冷度，从而增加系统循环的制冷制热量。制冷剂在换热时，95％以上的换热量来源于其两相区的汽化潜热量，而单向区(纯液体、纯气体)的等压比热容相对很小，换热量占总系统循环的比例小。此外，气态制冷剂在管路中的压降大，是系统循环压损的主要来源，会增加循环做功量，即增加了系统循环的能耗。During the heating operation of the air conditioner, the high-temperature and high-pressure gaseous refrigerant forms a low-temperature and high-pressure liquid refrigerant after heat exchange through the condenser, and then throttling and depressurization through the throttling device to form a low-temperature low-pressure gas-liquid two-phase zone refrigerant to enter the evaporation. Heat exchange. The larger the evaporation area, the higher the relative evaporation capacity. Among them, the low temperature and high pressure liquid refrigerant will increase the degree of subcooling if it continues to exotherm, thereby increasing the cooling capacity of the system cycle. When the refrigerant is in heat exchange, more than 95% of the heat exchange is derived from the latent heat of vaporization in the two-phase region, while the isobaric specific heat capacity of the unidirectional zone (pure liquid, pure gas) is relatively small, and the heat exchange capacity accounts for the total system. The proportion of the loop is small. In addition, the pressure drop of the gaseous refrigerant in the pipeline is large, which is the main source of the system cyclic pressure loss, which will increase the circulating work volume, that is, increase the energy consumption of the system cycle.

此外，参照图3，图3是传统空调器制热运行时的循环原理图。如图3所示，空调器制热运行的实际运行温度点一般为，A点高温气态70℃冷媒，进入室内换热器和20℃的室内环境进行换热，温度降低为30℃，流经联机管后进入节流装置，其中，B点和节流装置之间的温度(30℃左右)远远高于室外环境温度7℃，余热被浪费，如果余热被吸收利用，还可以增加系统循环的过冷度。In addition, referring to FIG. 3, FIG. 3 is a cycle schematic diagram of a conventional air conditioner during heating operation. As shown in Figure 3, the actual operating temperature of the air conditioner heating operation is generally: A point high temperature gaseous 70 ° C refrigerant, enter the indoor heat exchanger and 20 ° C indoor environment for heat exchange, the temperature is reduced to 30 ° C, flow through After the line tube enters the throttling device, the temperature between point B and the throttling device (about 30 ° C) is much higher than the outdoor ambient temperature of 7 ° C, and the waste heat is wasted. If the residual heat is absorbed and utilized, the system cycle can be increased. Too cold.

基于此，特提出本发明。Based on this, the present invention has been specifically proposed.

发明内容Summary of the invention

为了解决现有技术中的上述问题，即为了提高空调器的制热循环效果，本发明提供的空调器系统包括串联在主回路中的压缩机、室内换热器、第一节流装置和室外换热器，所述主回路中还设置有热交换器；所述热交换器的一侧与所述第一节流装置和所述室内换热器之间的第一管路相连，所述热交 换器的另一侧与所述第一节流装置和所述室外换热器之间的第二管路相连；并且通过所述第一管路的冷媒与通过所述第二管路的冷媒能够在所述热交换器内进行热交换。In order to solve the above problems in the prior art, that is, in order to improve the heating cycle effect of the air conditioner, the air conditioner system provided by the present invention includes a compressor, an indoor heat exchanger, a first throttle device, and an outdoor unit connected in series in the main circuit. a heat exchanger, wherein the main circuit is further provided with a heat exchanger; one side of the heat exchanger is connected to a first pipeline between the first throttle device and the indoor heat exchanger, The other side of the heat exchanger is connected to a second line between the first throttle device and the outdoor heat exchanger; and the refrigerant passing through the first line and the refrigerant passing through the second line The refrigerant can exchange heat in the heat exchanger.

在上述空调器系统的优选实施方式中，所述第一管路穿过所述热交换器的一侧，并且/或者所述第二管路穿过所述热交换器的另一侧。In a preferred embodiment of the above air conditioner system, the first conduit passes through one side of the heat exchanger and/or the second conduit passes through the other side of the heat exchanger.

在上述空调器系统的优选实施方式中，所述主回路中还设置有第二节流装置，所述第二节流装置位于所述热交换器与所述室内换热器之间的第一管路区段中。In a preferred embodiment of the air conditioner system, a second throttle device is further disposed in the main circuit, and the second throttle device is located between the heat exchanger and the indoor heat exchanger. In the pipeline section.

在上述空调器系统的优选实施方式中，当所述空调器系统制热运行时，所述第二节流装置处于全开状态，所述第一节流装置用于冷媒节流。In a preferred embodiment of the above air conditioner system, when the air conditioner system is operating in heating, the second throttle device is in a fully open state, and the first throttle device is used for refrigerant throttling.

在上述空调器系统的优选实施方式中，当所述空调器系统制冷运行时，所述第一节流装置处于全开状态，所述第二节流装置用于冷媒节流。In a preferred embodiment of the above air conditioner system, when the air conditioner system is in a cooling operation, the first throttle device is in a fully open state, and the second throttle device is used to throttle the refrigerant.

在上述空调器系统的优选实施方式中，所述压缩机设置有气液分离器，冷媒经过所述气液分离器后回流到所述压缩机中。In a preferred embodiment of the above air conditioner system, the compressor is provided with a gas-liquid separator, and the refrigerant passes through the gas-liquid separator and is returned to the compressor.

在上述空调器系统的优选实施方式中，所述空调器系统还包括模式切换装置，所述模式切换装置用于在制冷模式与制热模式之间切换所述空调器系统。In a preferred embodiment of the above air conditioner system, the air conditioner system further includes a mode switching device for switching the air conditioner system between a cooling mode and a heating mode.

在上述空调器系统的优选实施方式中，所述模式切换装置是四通阀。In a preferred embodiment of the above air conditioner system, the mode switching device is a four-way valve.

在本发明的技术方案中，空调器系统中增加了热交换器，并且该热交换器的两侧分别与第一管路和第二管路相连，这样一来，第一管路中的冷媒和第二管路中的冷媒能够在热交换器处进行热交换，不仅有效地增加了第一管路中的冷媒的过冷度，而且还可以促进第二管路中的冷媒的蒸发，从而提升了系统的制热量。此外，本发明的空调器还通过设置第二节流装置的方式，使得空调器在切换为制冷模式时，利用该第二节流装置替代第一节流装置(此时第一节流装置处于全开状态)给冷媒进行节流，从而避免了出现在制冷循环时制冷量被降低的现象。In the technical solution of the present invention, a heat exchanger is added to the air conditioner system, and two sides of the heat exchanger are respectively connected to the first pipeline and the second pipeline, so that the refrigerant in the first pipeline is And the refrigerant in the second pipeline can exchange heat at the heat exchanger, which not only effectively increases the degree of subcooling of the refrigerant in the first pipeline, but also promotes evaporation of the refrigerant in the second pipeline, thereby Increased system heat. In addition, the air conditioner of the present invention also uses the second throttle device to replace the first throttle device when the air conditioner is switched to the cooling mode by setting the second throttle device (at this time, the first throttle device is at The fully open state is to throttle the refrigerant, thereby avoiding the phenomenon that the cooling capacity is reduced when the refrigeration cycle occurs.

附图说明DRAWINGS

图1是本发明的空调器系统的实施例一的结构原理图；1 is a schematic structural view of a first embodiment of an air conditioner system of the present invention;

图2是本发明的空调器系统的实施例二的结构原理图；Figure 2 is a schematic structural view of a second embodiment of the air conditioner system of the present invention;

图3是传统空调器制热运行时的循环原理图。Fig. 3 is a schematic diagram of the cycle of a conventional air conditioner during heating operation.

具体实施方式Detailed ways

为使本发明的实施例、技术方案和优点更加明显，下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所述的实施例是本发明的一部分实施例，而不是全部实施例。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。The embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings, which are obvious, but not all Example. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of the present invention.

首先参照图1，图1是本发明的空调器系统的实施例一的结构原理图。如图1所示，本发明的空调器系统包括串联在主回路的压缩机1、室内换热器2、第一节流装置3和室外换热器4，在该主回路中还设置有热交换器5。为了便于说明，将第一节流装置3与室内换热器2之间的管路作为第一管路M，将第一节流装置3与室外换热器4之间的管路作为第二管路N，热交换器5的一侧与第一管路M相连，热交换器5的另一侧与第二管路N相连，如图1中所示的连接方式：第一管路M穿过热交换器5的一侧，第二管路N穿过热交换器N的另一侧。并且，通过第一管路M的冷媒与通过第二管路N的冷媒能够在热交换器5中进行热交换。Referring first to Fig. 1, Fig. 1 is a schematic structural view of a first embodiment of an air conditioner system of the present invention. As shown in FIG. 1, the air conditioner system of the present invention includes a compressor 1 connected in series in the main circuit, an indoor heat exchanger 2, a first throttle device 3, and an outdoor heat exchanger 4, and heat is also disposed in the main circuit. Switch 5. For convenience of explanation, the pipeline between the first throttle device 3 and the indoor heat exchanger 2 is used as the first pipeline M, and the pipeline between the first throttle device 3 and the outdoor heat exchanger 4 is used as the second conduit. The pipe N, one side of the heat exchanger 5 is connected to the first pipe M, and the other side of the heat exchanger 5 is connected to the second pipe N, as shown in FIG. 1 : the first pipe M Passing through one side of the heat exchanger 5, the second line N passes through the other side of the heat exchanger N. Further, the refrigerant passing through the first line M and the refrigerant passing through the second line N can exchange heat in the heat exchanger 5.

在空调器制热循环过程中，压缩机1排出的高温高压气态冷媒流向室内换热器2，在室内换热器2进行热交换，变为低温高压的液态冷媒，冷媒通过沿第一管路M到达C点，此时冷媒温度在20℃左右(此处的热量为废热没有被充分利用)。然后，冷媒经过第一节流装置3节流后进入第二管路N，此时D点冷媒(经过节流后的冷媒)的温度作5℃左右。由于第一管路M中的冷媒和第二管路N中的冷媒存在温差，且两者都通过热交换器5，这样一来，第一管路M中的冷媒和第二管路N中的冷媒在热交换器5处进行热交换，不仅有效地增加了第一管路M中的冷媒的过冷度(即C点到第一节流装置3的那部分冷媒继续放热降温)，而且还可以促进第二管路N中的冷媒的蒸发(即D点处的低温冷媒可以对C点处余热进行蒸发吸热，这也相当于增加了蒸发面积，有效提升了换热能力)，从而提升了系统的制热量。During the heating cycle of the air conditioner, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 flows to the indoor heat exchanger 2, and performs heat exchange in the indoor heat exchanger 2 to become a low-temperature high-pressure liquid refrigerant, and the refrigerant passes along the first pipeline. M reaches point C, at which time the temperature of the refrigerant is around 20 ° C (the heat here is not fully utilized for waste heat). Then, the refrigerant enters the second line N after being throttled by the first throttle device 3, and the temperature of the refrigerant at the point D (after the throttled refrigerant) is about 5 °C. Since the refrigerant in the first line M and the refrigerant in the second line N have a temperature difference, and both pass through the heat exchanger 5, the refrigerant in the first line M and the second line N are The heat exchange of the refrigerant at the heat exchanger 5 not only effectively increases the degree of subcooling of the refrigerant in the first line M (ie, the portion of the refrigerant from the point C to the first throttle device 3 continues to radiate and cool down), Moreover, the evaporation of the refrigerant in the second pipe N can be promoted (that is, the low-temperature refrigerant at the point D can evaporate and absorb the heat of the residual heat at the point C, which is equivalent to increasing the evaporation area and effectively improving the heat exchange capacity). Thereby increasing the heating capacity of the system.

在空调器制热运行过程中，第一管路M中的冷媒在热交换器5进行热交换后再进入第一节流装置3，形成D点低温低压的气液两相区，再经过室外换热器4回流至压缩机1。通过上述设计，在空调器制热运行的过程中能够使废热再利用，以提升整个系统的制热量。During the heating operation of the air conditioner, the refrigerant in the first pipeline M is subjected to heat exchange in the heat exchanger 5 and then enters the first throttle device 3 to form a gas-liquid two-phase region of low temperature and low pressure at point D, and then passes through the outdoor The heat exchanger 4 is returned to the compressor 1. Through the above design, waste heat can be reused during the heating operation of the air conditioner to increase the heat generation of the entire system.

需要说明的是，上文中的热交换器5可以是一个盛有水的水箱也可以是任意其他适宜的形式，只要能够使第一节流装置3上游和下游的冷媒进行换 热即可。此外，上述设计对于制热循环能有效提升制热量，而对于制冷循环时降低制冷量。It should be noted that the heat exchanger 5 in the above may be a water tank containing water or any other suitable form as long as the refrigerant upstream and downstream of the first throttle device 3 can be exchanged. In addition, the above design can effectively increase the heating capacity for the heating cycle and reduce the cooling capacity for the refrigeration cycle.

作为一种示例，本发明的空调器系统还包括模式切换装置(例如图1中的四通阀Q)，该模式切换装置用于在制冷模式与制热模式之间切换空调器系统。As an example, the air conditioner system of the present invention further includes a mode switching device (such as the four-way valve Q in FIG. 1) for switching the air conditioner system between the cooling mode and the heating mode.

作为一种示例，参照图2，图2是本发明的空调器系统的实施例二的结构原理图。如图2所示，本发明的空调器系统的主回路中还设置有第二节流装置6，该第二节流装置6位于热交换器5与室内换热器2之间的第一管路M区段中。当空调器制热运行时，第二节流装置6处于全开状态，第一节流装置3用于冷媒节流。此时与实施例一中的空调器系统的原理相同。通过四通阀Q将空调器系统切换为制冷运行时，第一节流装置3处于全开状态，第二节流装置6用于冷媒节流。此时，热交管器5两侧的冷媒几乎无温差，即热交换器5在制冷循环的过程中不发挥作用，整个制冷循环为常规制冷循环，从而避免降低制冷运行时的制冷量。As an example, referring to Fig. 2, Fig. 2 is a structural schematic diagram of a second embodiment of the air conditioner system of the present invention. As shown in FIG. 2, a second throttle device 6 is further disposed in the main circuit of the air conditioner system of the present invention, and the second throttle device 6 is located in the first tube between the heat exchanger 5 and the indoor heat exchanger 2. In the M section. When the air conditioner is operating in heating, the second throttle device 6 is in a fully open state, and the first throttle device 3 is used for refrigerant throttling. At this time, the principle of the air conditioner system in the first embodiment is the same. When the air conditioner system is switched to the cooling operation by the four-way valve Q, the first throttle device 3 is in the fully open state, and the second throttle device 6 is used for the refrigerant throttling. At this time, the refrigerant on both sides of the heat exchanger 5 has almost no temperature difference, that is, the heat exchanger 5 does not function during the refrigeration cycle, and the entire refrigeration cycle is a conventional refrigeration cycle, thereby avoiding a reduction in the amount of refrigeration during the cooling operation.

优选地，参照图1和图2，压缩机1设置有气液分离器11，进入压缩机1的气态冷媒首先经过该气液分离器11后，再被压缩机1吸入，从而开启下一循环。Preferably, referring to Figures 1 and 2, the compressor 1 is provided with a gas-liquid separator 11, and the gaseous refrigerant entering the compressor 1 first passes through the gas-liquid separator 11, and is then sucked by the compressor 1, thereby opening the next cycle. .

综上所述，本发明的空调器系统中增加了热交换器，并且该热交换器的两侧分别与第一管路和第二管路相连，这样一来，第一管路中的冷媒和第二管路中的冷媒能够在热交换器处进行热交换，不仅有效地增加了第一管路中的冷媒的过冷度，而且还可以促进第二管路中的冷媒的蒸发，从而提升了系统的制热量。此外，本发明的空调器还通过设置第二节流装置的方式，使得空调器在切换为制冷模式时，利用该第二节流装置替代第一节流装置(此时第一节流装置处于全开状态)给冷媒进行节流，从而避免了出现在制冷循环时制冷量被降低的现象。In summary, a heat exchanger is added to the air conditioner system of the present invention, and two sides of the heat exchanger are respectively connected to the first pipeline and the second pipeline, so that the refrigerant in the first pipeline is obtained. And the refrigerant in the second pipeline can exchange heat at the heat exchanger, which not only effectively increases the degree of subcooling of the refrigerant in the first pipeline, but also promotes evaporation of the refrigerant in the second pipeline, thereby Increased system heat. In addition, the air conditioner of the present invention also uses the second throttle device to replace the first throttle device when the air conditioner is switched to the cooling mode by setting the second throttle device (at this time, the first throttle device is at The fully open state is to throttle the refrigerant, thereby avoiding the phenomenon that the cooling capacity is reduced when the refrigeration cycle occurs.

至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。Heretofore, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is obviously not limited to the specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.

Claims (8)

一种空调器系统，包括串联在主回路中的压缩机、室内换热器、第一节流装置和室外换热器，An air conditioner system comprising a compressor connected in series in a main circuit, an indoor heat exchanger, a first throttling device and an outdoor heat exchanger, 其中，所述主回路中还设置有热交换器；Wherein, the main circuit is further provided with a heat exchanger; 所述热交换器的一侧与所述第一节流装置和所述室内换热器之间的第一管路相连，所述热交换器的另一侧与所述第一节流装置和所述室外换热器之间的第二管路相连；并且One side of the heat exchanger is connected to a first line between the first throttling device and the indoor heat exchanger, and the other side of the heat exchanger is connected to the first throttling device and a second conduit between the outdoor heat exchangers; and 所述空调器系统配置成使通过所述第一管路的冷媒与通过所述第二管路的冷媒能够在所述热交换器内进行热交换。The air conditioner system is configured to enable heat exchange between the refrigerant passing through the first conduit and the refrigerant passing through the second conduit in the heat exchanger. 根据权利要求1所述的空调器系统，其中，所述第一管路穿过所述热交换器的一侧，并且/或者所述第二管路穿过所述热交换器的另一侧。The air conditioner system according to claim 1, wherein the first conduit passes through one side of the heat exchanger and/or the second conduit passes through the other side of the heat exchanger . 根据权利要求2所述的空调器系统，其中，所述主回路中还设置有第二节流装置，所述第二节流装置位于所述热交换器与所述室内换热器之间的第一管路区段中。The air conditioner system according to claim 2, wherein said main circuit is further provided with a second throttle device, said second throttle device being located between said heat exchanger and said indoor heat exchanger In the first pipe section. 根据权利要求3所述的空调器系统，其中，当所述空调器系统制热运行时，所述第二节流装置处于全开状态，所述第一节流装置用于冷媒节流。The air conditioner system according to claim 3, wherein said second throttle device is in a fully open state when said air conditioner system is heated, said first throttle device being used for refrigerant throttling. 根据权利要求3所述的空调器系统，其中，当所述空调器系统制冷运行时，所述第一节流装置处于全开状态，所述第二节流装置用于冷媒节流。The air conditioner system according to claim 3, wherein said first throttle device is in a fully open state and said second throttle device is used for refrigerant throttling when said air conditioner system is in a cooling operation. 根据权利要求1至5中任一项所述的空调器系统，其中，所述压缩机设置有气液分离器，冷媒经过所述气液分离器后回流到所述压缩机中。The air conditioner system according to any one of claims 1 to 5, wherein the compressor is provided with a gas-liquid separator, and the refrigerant passes through the gas-liquid separator and is returned to the compressor. 根据权利要求1至5中任一项所述的空调器系统，其中，所述空调器系统还包括模式切换装置，所述模式切换装置用于在制冷模式与制热模式之间切换所述空调器系统。The air conditioner system according to any one of claims 1 to 5, wherein the air conditioner system further includes a mode switching device for switching the air conditioner between a cooling mode and a heating mode System. 根据权利要求7所述的空调器系统，其中，所述模式切换装置是四通阀。The air conditioner system according to claim 7, wherein said mode switching means is a four-way valve.
PCT/CN2018/115750 2017-12-29 2018-11-15 Air conditioner system Ceased WO2019128519A1 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108302839A (en) * 2017-12-29 2018-07-20 青岛海尔空调器有限总公司 Air-conditioner system
CN110173913A (en) * 2019-04-24 2019-08-27 同济大学 A kind of steam compressed high temperature heat pump unit of very large super cooling degree
CN112428772B (en) * 2020-10-30 2023-03-21 三花控股集团有限公司 Fluid control assembly and thermal management system
CN113251474A (en) * 2021-04-28 2021-08-13 青岛海尔空调器有限总公司 Air conditioner with double compressors

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101268312A (en) * 2005-09-22 2008-09-17 大金工业株式会社 air conditioner
JP2010008002A (en) * 2008-06-30 2010-01-14 Mitsubishi Electric Corp Refrigerating cycle apparatus
JP2011052884A (en) * 2009-09-01 2011-03-17 Mitsubishi Electric Corp Refrigerating air conditioner
CN102272534A (en) * 2009-01-15 2011-12-07 三菱电机株式会社 Morimoto osamu [jp]; saito makoto [jp]; yanachi satoru [jp]; yamashita koji
CN106796045A (en) * 2014-11-19 2017-05-31 三菱电机株式会社 Conditioner
CN107076467A (en) * 2014-11-04 2017-08-18 三菱电机株式会社 Conditioner
CN107084562A (en) * 2017-04-13 2017-08-22 青岛海尔空调器有限总公司 A kind of control method of air conditioner and air conditioner
CN108302839A (en) * 2017-12-29 2018-07-20 青岛海尔空调器有限总公司 Air-conditioner system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10141798A (en) * 1996-11-08 1998-05-29 Denso Corp Heat pump apparatus
JP6080939B2 (en) * 2013-02-19 2017-02-15 三菱電機株式会社 Air conditioner
JP6364539B2 (en) * 2015-02-27 2018-07-25 日立ジョンソンコントロールズ空調株式会社 Heat exchange device and air conditioner using the same
CN106016505B (en) * 2016-06-12 2019-05-31 青岛海尔空调器有限总公司 Air conditioning circuit board cooling device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101268312A (en) * 2005-09-22 2008-09-17 大金工业株式会社 air conditioner
JP2010008002A (en) * 2008-06-30 2010-01-14 Mitsubishi Electric Corp Refrigerating cycle apparatus
CN102272534A (en) * 2009-01-15 2011-12-07 三菱电机株式会社 Morimoto osamu [jp]; saito makoto [jp]; yanachi satoru [jp]; yamashita koji
JP2011052884A (en) * 2009-09-01 2011-03-17 Mitsubishi Electric Corp Refrigerating air conditioner
CN107076467A (en) * 2014-11-04 2017-08-18 三菱电机株式会社 Conditioner
CN106796045A (en) * 2014-11-19 2017-05-31 三菱电机株式会社 Conditioner
CN107084562A (en) * 2017-04-13 2017-08-22 青岛海尔空调器有限总公司 A kind of control method of air conditioner and air conditioner
CN108302839A (en) * 2017-12-29 2018-07-20 青岛海尔空调器有限总公司 Air-conditioner system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3734193A4 *

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