WO2017063613A1

WO2017063613A1 - Gas liquid separator, air conditioning system, and air conditioning system operation method

Info

Publication number: WO2017063613A1
Application number: PCT/CN2016/107726
Authority: WO
Inventors: 邹大枢; 李胤媛; 梁桂源; 罗智越; 位向前; 李慧玲
Original assignee: 珠海格力电器股份有限公司
Priority date: 2015-10-16
Filing date: 2016-11-29
Publication date: 2017-04-20
Also published as: CN105241134B; CN105241134A

Abstract

A gas liquid separator (1), comprising: sealed spaces separately formed by a housing (11) and an inner container (12), the inner container (12) being inside of the housing (11); the space between the housing (11) and the inner container (12) forms a supercooling passage, and the space inside of the inner container (12) forms a superheating passage; the superheating passage has a gas inlet pipe (13) for introducing in refrigerant steam and has a gas outlet pipe (14) for discharging the refrigerant steam out of the gas liquid separator (1); the supercooling passage has a liquid inlet pipe (15) for introducing in refrigerant liquid and has a liquid outlet pipe (16) for discharging the refrigerant liquid out of the gas liquid separator (1); the refrigerant liquid inside of the supercooling passage and the refrigerant steam inside of the superheating passage undergo heat exchange.

Description

气液分离器、空调***及空调***的运行方法Gas-liquid separator, air conditioning system, and operation method of air conditioning system

技术领域Technical field

本发明涉及空调技术领域，具体涉及一种气液分离器、包含该气液分离器的空调***，以及该空调***的运行方法。The present invention relates to the field of air conditioning technology, and in particular to a gas-liquid separator, an air conditioning system including the gas-liquid separator, and a method of operating the air-conditioning system.

背景技术Background technique

空调机组在制冷状态下，冷媒通过压缩机压缩转变为高温高压的气体，通过四通阀进入室外热交换器(冷凝器)，在冷凝器吸冷放热后变成中温高压的液体，经膨胀阀后，变成低温低压的液体，经过室内热交换器(蒸发器)吸热放冷作用后，变成低温低压的气体，经过四通阀回到压缩机，然后继续循环。空调机组在制热状态下，通过四通阀改变冷媒流向，冷媒通过压缩机压缩转变为高温高压的气体，通过四通阀进入室内热交换器(冷凝器)，在冷凝器吸冷放热后变成中温高压的液体，经膨胀阀后变成低温低压的液体，经过室外热交换器(蒸发器)吸热放冷作用后，变成低温低压的气体，经过四通阀回到压缩机，然后继续循环。When the air conditioning unit is in the cooling state, the refrigerant is converted into a high-temperature and high-pressure gas by the compression of the compressor, and enters the outdoor heat exchanger (condenser) through the four-way valve, and becomes a medium-temperature high-pressure liquid after being cooled by the condenser, and is expanded. After the valve, it becomes a low-temperature and low-pressure liquid. After passing through the indoor heat exchanger (evaporator), it becomes a low-temperature and low-pressure gas, and returns to the compressor through the four-way valve, and then continues to circulate. In the heating state, the air conditioning unit changes the flow direction of the refrigerant through the four-way valve, and the refrigerant is converted into a high-temperature and high-pressure gas by the compression of the compressor, and enters the indoor heat exchanger (condenser) through the four-way valve, after the condenser is cooled and released. The liquid becomes a medium-temperature high-pressure liquid, and becomes a low-temperature low-pressure liquid through the expansion valve. After passing through the outdoor heat exchanger (evaporator), it becomes a low-temperature low-pressure gas, and returns to the compressor through the four-way valve. Then continue the loop.

目前空调机组实现过冷的手段主要有以下几种：1、在冷凝器中增加过冷段，该方式会增加冷凝器的体积和整机的占用空间，不符合客户对空调体积小的要求；另外，通过增加过冷段(如板式换热器等)来实现过冷，也会加大材料成本和加工成本；2、采用在冷凝器后增加高压储液罐，以储存更多的冷媒，当机组缺冷媒时，可以进行补偿，但是，该手段并没有进行冷媒的过冷，能效得不到提升；3、通过增加气液分离器进行冷媒的过冷，如图1所示，现有技术的一种空调机组设置有气液分离器，其中，气液分离器安装在蒸发器和压缩机之间，从气液分离器100排出的过热的制冷剂蒸汽被吸入压缩机200，经过压缩后，形成高温高压的气体进入冷凝器300进行换热，经过冷凝后形成高压中温的制冷剂液体，然后，制冷剂液体进入气液分离器100的过冷通路中，形成过冷的制冷剂液体后排出气液分离器100，接着流经节流阀400节流，节流后形成低压低温的气液两相的制冷剂进入蒸发器500，进而在蒸发器中蒸发，形成制冷剂蒸汽，制冷剂蒸汽进入气液分离器100的过热通路中，形成过热的制冷剂蒸汽后排出气液分离器100，随后再一次被吸入压缩机200，从而实现整个制冷/制热循环。但是，该气液分离器对冷媒过冷的方式并不能有效兼顾机组的制冷、制热模式。At present, the main means for achieving overcooling of the air conditioning unit are as follows: 1. Adding a supercooling section to the condenser, this method will increase the volume of the condenser and the occupied space of the whole machine, and does not meet the requirements of the customer for the small volume of the air conditioner; In addition, by increasing the supercooling section (such as plate heat exchangers, etc.) to achieve subcooling, it will also increase material costs and processing costs; 2. Use a high-pressure liquid storage tank after the condenser to store more refrigerant. When the unit lacks refrigerant, it can be compensated. However, this method does not perform subcooling of the refrigerant, and the energy efficiency is not improved. 3. By adding the gas-liquid separator to supercool the refrigerant, as shown in Figure 1, the existing An air conditioning unit of the technology is provided with a gas-liquid separator, wherein the gas-liquid separator is installed between the evaporator and the compressor, The superheated refrigerant vapor discharged from the gas-liquid separator 100 is sucked into the compressor 200, and after being compressed, a high-temperature and high-pressure gas is formed to enter the condenser 300 for heat exchange, and after condensation, a high-pressure medium-temperature refrigerant liquid is formed, and then, the refrigerant is cooled. The liquid enters the supercooling passage of the gas-liquid separator 100, forms a supercooled refrigerant liquid, and then exits the gas-liquid separator 100, and then flows through the throttle valve 400 to throttle, and then forms a low-pressure and low-temperature gas-liquid two-phase after throttling. The refrigerant enters the evaporator 500 and evaporates in the evaporator to form refrigerant vapor. The refrigerant vapor enters the superheat passage of the gas-liquid separator 100 to form superheated refrigerant vapor, and then exits the gas-liquid separator 100, and then It is sucked into the compressor 200 once to achieve the entire refrigeration/heating cycle. However, the method in which the gas-liquid separator supercools the refrigerant cannot effectively take into consideration the cooling and heating modes of the unit.

发明内容Summary of the invention

本发明的目的在于提供一种气液分离器，将该气液分离器运用到空调***中，可实现对冷媒过冷。It is an object of the present invention to provide a gas-liquid separator which can be applied to an air conditioning system to achieve subcooling of the refrigerant.

本发明的另一目的在于提供一种气液分离器，将该气液分离器运用到空调***中，可实现对液态冷媒的储存。Another object of the present invention is to provide a gas-liquid separator which is applied to an air conditioning system to enable storage of liquid refrigerant.

本发明的再一目的在于提供一种气液分离器，将该气液分离器运用到空调***中，可提高压缩机的吸气过热度，减少液击的可能性。It is still another object of the present invention to provide a gas-liquid separator which is applied to an air conditioning system to improve the suction superheat of the compressor and to reduce the possibility of liquid hammer.

本发明的又一目的在于提供一种气液分离器，将该气液分离器运用到空调***中，可有效兼顾机组的制冷/制热模式。Still another object of the present invention is to provide a gas-liquid separator which can be applied to an air conditioning system to effectively balance the cooling/heating mode of the unit.

本发明的又一目的在于提供一种气液分离器，其结构简单，可操作性强。It is still another object of the present invention to provide a gas-liquid separator which is simple in structure and strong in operability.

本发明的还一目的在于提供一种空调***，可有效避免现有空调***的压缩机吸气过热度低，和/或，冷媒过冷度低，和/或，冷媒补充不足等问题。It is still another object of the present invention to provide an air conditioning system that can effectively avoid problems such as low suction superheat of the compressor of the existing air conditioning system, and/or low subcooling of the refrigerant, and/or insufficient replenishment of the refrigerant.

为达此目的，本发明采用以下技术方案：To this end, the present invention employs the following technical solutions:

一方面，提供一种气液分离器，包括：外壳和内胆分别构成的密闭空间，所述内胆位于外壳内，所述外壳与所述内胆之间的空间形成过冷通道，所述内胆内的空间形成过热通道，所述过热通道具有用于引入冷媒蒸汽的进气管和将冷媒蒸汽排出所述气液分离器的出气管，所述过冷通道具有用于引入冷媒液体的进液管和将冷媒液体排出所述气液分离器的出液管，所述过冷通道内的冷媒液体与所述过热通道内的冷媒蒸汽进行热交换。In one aspect, a gas-liquid separator is provided, comprising: a sealed space formed by a casing and a liner, respectively; The inner casing is located in the outer casing, the space between the outer casing and the inner tank forms a subcooling passage, and the space in the inner tank forms a superheat passage, the superheat passage has an intake pipe for introducing refrigerant vapor and Discharging refrigerant vapor from an outlet pipe of the gas-liquid separator, the subcooling passage having an inlet pipe for introducing a refrigerant liquid and a discharge pipe for discharging the refrigerant liquid from the gas-liquid separator, the subcooling passage The refrigerant liquid in the interior exchanges heat with the refrigerant vapor in the superheat passage.

优选地，所述进液管具有分别供制冷/制热模式的冷媒液体通过的第一入口和第二入口。Preferably, the inlet pipe has a first inlet and a second inlet through which a refrigerant liquid in a cooling/heating mode is passed, respectively.

另一方面，提供一种空调***，包括：室内机和室外机，所述室内机包括第一换热器，所述室外机包括第二换热器、压缩机、所述气液分离器、四通阀，所述第一换热器具有第一介质口和第二介质口，所述第二换热器具有第三介质口和第四介质口，所述压缩机具有压缩机入口和压缩机出口，所述压缩机入口连接所述气液分离器的出气管，所述压缩机出口连接所述四通阀，所述气液分离器的进气管连接所述四通阀，所述第一介质口连接所述四通阀，所述第三介质口连接所述四通阀；In another aspect, an air conditioning system is provided, including: an indoor unit and an outdoor unit, the indoor unit including a first heat exchanger, the outdoor unit including a second heat exchanger, a compressor, the gas-liquid separator, a four-way valve, the first heat exchanger having a first medium port and a second medium port, the second heat exchanger having a third medium port and a fourth medium port, the compressor having a compressor inlet and compression a compressor outlet, the compressor inlet is connected to an outlet pipe of the gas-liquid separator, the compressor outlet is connected to the four-way valve, and an intake pipe of the gas-liquid separator is connected to the four-way valve, a medium port is connected to the four-way valve, and the third medium port is connected to the four-way valve;

空调***还包括第一支路、第二支路、第三支路和第四支路，其中，所述第一支路连接所述第二介质口与所述出液管，所述第二支路连接所述第四介质口与所述第一入口，所述第三支路连接所述第四介质口与所述出液管，所述第四支路连接所述第二介质口与所述第二入口，于所述第一支路、第二支路、第三支路和第四支路均设置有电磁阀，用于控制各支路的通断。The air conditioning system further includes a first branch, a second branch, a third branch, and a fourth branch, wherein the first branch connects the second medium port and the liquid outlet tube, the second a branch connecting the fourth medium port and the first inlet, the third branch connecting the fourth medium port and the liquid outlet tube, and the fourth branch connecting the second medium port The second inlet is provided with electromagnetic valves on the first branch, the second branch, the third branch and the fourth branch for controlling the on and off of each branch.

再一方面，还提供一种空调***的运行方法，当空调***处于制冷模式时，控制所述第一支路和第二支路导通，所述第三支路和第四支路阻断，吸入压缩机的冷媒被压缩后流经四通阀，进入第二换热器进行热交换，由第二换热器排出的冷媒液体从第二支路、所述进液管进入所述气液分离器的过冷通道，与气液分离器内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，经热交换后的冷媒液体由出液管排出，经第一支路进入第一换热器进行热交换，由第一换热器排出的冷媒蒸汽流经四通阀从所述进气管进入所述气液分离器的过热通道，与气液分离器内的冷媒液体进行热交换，实现冷媒蒸汽的过热，经热交换后的冷媒蒸汽由出气管排出，再次被吸入压缩机，实现空调***的制冷循环；或者，In still another aspect, an operating method of an air conditioning system is provided. When the air conditioning system is in a cooling mode, the first branch and the second branch are controlled to be turned on, and the third branch and the fourth branch are blocked. The refrigerant sucked into the compressor is compressed and flows through the four-way valve to enter the second heat exchanger for heat exchange, and the refrigerant liquid discharged from the second heat exchanger enters the gas from the second branch and the inlet pipe. Subcooling passage of liquid separator The refrigerant vapor in the liquid separator exchanges heat to realize supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange is discharged from the liquid discharge pipe, and enters the first heat exchanger through the first branch for heat exchange, and the first exchange The refrigerant vapor discharged from the heat exchanger flows through the four-way valve from the intake pipe into the superheat passage of the gas-liquid separator, and exchanges heat with the refrigerant liquid in the gas-liquid separator to realize superheating of the refrigerant vapor, after heat exchange The refrigerant vapor is discharged from the air outlet pipe and is again sucked into the compressor to realize the refrigeration cycle of the air conditioning system; or

当空调***处于制热模式时，控制所述第一支路和第二支路阻断，所述第三支路和第四支路导通，吸入压缩机的冷媒被压缩后流经四通阀，进入第一换热器进行热交换，由第一换热器排出的冷媒液体从第四支路、所述进液管进入所述气液分离器的过冷通道，与气液分离器内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，经热交换后的冷媒液体由出液管排出，经第三支路进入第二换热器进行热交换，由第二换热器排出的冷媒蒸汽流经四通阀从所述进气管进入所述气液分离器的过热通道，与气液分离器内的冷媒液体进行热交换，实现冷媒蒸汽的过热，经热交换后的冷媒蒸汽由出气管排出，再次被吸入压缩机，实现空调***的制热循环。When the air conditioning system is in the heating mode, the first branch and the second branch are controlled to be blocked, the third branch and the fourth branch are turned on, and the refrigerant sucked into the compressor is compressed and flows through the cross. a valve enters the first heat exchanger for heat exchange, and the refrigerant liquid discharged from the first heat exchanger enters the subcooling passage of the gas-liquid separator from the fourth branch, the inlet pipe, and the gas-liquid separator The refrigerant vapor in the heat exchange is performed to achieve supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange is discharged from the liquid discharge pipe, and enters the second heat exchanger through the third branch for heat exchange, and is discharged by the second heat exchanger. The refrigerant vapor flows through the four-way valve from the intake pipe into the superheat passage of the gas-liquid separator, and exchanges heat with the refrigerant liquid in the gas-liquid separator to realize superheating of the refrigerant vapor, and the refrigerant vapor after the heat exchange. It is discharged from the air outlet pipe and sucked into the compressor again to realize the heating cycle of the air conditioning system.

本发明的有益效果为：本发明的气液分离器通过设置外壳和内胆，内胆内形成供冷媒蒸汽通过的过热通道，外壳与内胆之间的空间形成供冷媒液体通过的过冷通道，使得温度较高的冷媒液体与温度较低的冷媒蒸汽分别在两个空间内流动并进行热交换，可以提高冷媒液体的过冷度和冷媒蒸汽的过热度，从而提高单位质量冷媒的制热量/制冷量，以及提高压缩机吸气过热度和油温过热度，减少液击的可能性，进而提高压缩机的可靠性；气液分离器的结构更为简单，相对于传统的过冷管换热的方式可降低成本，并为拆装提供便利。The utility model has the beneficial effects that the gas-liquid separator of the invention has a heat-insulating passage for the passage of the refrigerant vapor through the inner casing and the inner tank, and the space between the outer casing and the inner tank forms a supercooling passage through which the refrigerant liquid passes. Therefore, the refrigerant liquid with higher temperature and the refrigerant vapor with lower temperature flow in two spaces and exchange heat, respectively, can improve the degree of subcooling of the refrigerant liquid and the superheat of the refrigerant vapor, thereby improving the heat generation per unit mass of the refrigerant. / Cooling capacity, as well as increasing compressor suction superheat and oil temperature superheat, reducing the possibility of liquid impact, thereby improving the reliability of the compressor; the structure of the gas-liquid separator is simpler, compared to the conventional supercooled tube The way of heat exchange reduces costs and facilitates disassembly.

附图说明 DRAWINGS

图1是现有技术公开的一种空调机组的结构示意图；1 is a schematic structural view of an air conditioning unit disclosed in the prior art;

图2是本发明实施例提供的气液分离器的结构示意图；2 is a schematic structural view of a gas-liquid separator provided by an embodiment of the present invention;

图3是本发明实施例提供的气液分离器的进液管的结构示意图；3 is a schematic structural view of a liquid inlet pipe of a gas-liquid separator according to an embodiment of the present invention;

图4是本发明实施例提供的空调***的结构示意图；4 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention;

图5是本发明实施例提供的空调***的制冷循环的工作原理图；5 is a working principle diagram of a refrigeration cycle of an air conditioning system according to an embodiment of the present invention;

图6是本发明实施例提供的空调***的制热循环的工作原理图；6 is a working principle diagram of a heating cycle of an air conditioning system according to an embodiment of the present invention;

图7是本发明实施例提供的空调***的制冷***流程图；7 is a flow chart of a refrigeration system of an air conditioning system according to an embodiment of the present invention;

图8是本发明实施例提供的空调***的制热***流程图。FIG. 8 is a flow chart of a heating system of an air conditioning system according to an embodiment of the present invention.

图中：In the picture:

100、气液分离器；200、压缩机；300、冷凝器；400、节流阀；500、蒸发器；100, gas-liquid separator; 200, compressor; 300, condenser; 400, throttle valve; 500, evaporator;

1、气液分离器；11、外壳；12、内胆；13、进气管；14、出气管；141、回液管；15、进液管；151、第一入口；152、第二入口；153、第三入口；154、第一支管；155、第二支管；16、出液管；17、内胆支架；1. gas-liquid separator; 11, outer casing; 12, inner tank; 13, intake pipe; 14, air outlet pipe; 141, liquid return pipe; 15, liquid inlet pipe; 151, first inlet; 152, second inlet; 153, the third inlet; 154, the first branch; 155, the second branch; 16, the liquid outlet; 17, the inner bracket;

2、室内机；21、第一换热器；211、第一介质口；212、第二介质口；2, indoor unit; 21, the first heat exchanger; 211, the first medium port; 212, the second medium port;

3、室外机；31、第二换热器；311、第三介质口；312、第四介质口；32、压缩机；321、压缩机入口；322、压缩机出口；33、四通阀；34、电子膨胀阀；35、第一支路；36、第二支路；37、第三支路；38、第四支路；39、电磁阀；40、第一过滤器；41、第二过滤器。3, outdoor unit; 31, second heat exchanger; 311, third medium port; 312, fourth medium port; 32, compressor; 321, compressor inlet; 322, compressor outlet; 33, four-way valve; 34, electronic expansion valve; 35, the first branch; 36, the second branch; 37, the third branch; 38, the fourth branch; 39, solenoid valve; 40, the first filter; 41, the second filter.

具体实施方式detailed description

下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

在本发明的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、 “顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it is to be understood that the terms "center", "length", "width", The orientation or positional relationship of the "top", "bottom", "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and a simplified description, rather than indicating or implying The device or component referred to must have a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting the invention.

此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly.

在本发明的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, the terms "connected", "connected", and "fixed" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise specifically defined and defined. It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

图2是本发明实施例提供的气液分离器的结构示意图。参考图2所示，本发明提供一种气液分离器1，包括：外壳11和内胆12分别构成的密闭空间，内胆12位于外壳11内，外壳11与内胆12之间的空间形成过冷通道，内胆12内的空间形成过热通道，所述过热通道具有用于引入冷媒蒸汽的进气管13和将冷媒蒸汽排出气液分离器1的出气管14，所述过冷通道具有用于引入冷媒液体的进液管15和将冷媒液体排出气液分离器1的出液管16，所述过冷通道内的冷媒液体与所述过热通道内的冷媒蒸汽进行热交换。2 is a schematic structural view of a gas-liquid separator provided by an embodiment of the present invention. Referring to Fig. 2, the present invention provides a gas-liquid separator 1, comprising: a closed space formed by a casing 11 and a liner 12, respectively, the inner casing 12 is located in the casing 11, and a space between the casing 11 and the inner casing 12 is formed. Cooling passage, inside the liner 12 The space forms a superheat passage having an intake pipe 13 for introducing refrigerant vapor and an outlet pipe 14 for discharging the refrigerant vapor to the gas-liquid separator 1, the subcooling passage having a liquid inlet pipe for introducing the refrigerant liquid 15 and discharging the refrigerant liquid out of the liquid discharge pipe 16 of the gas-liquid separator 1, wherein the refrigerant liquid in the supercooling passage exchanges heat with the refrigerant vapor in the superheat passage.

本发明通过设置外壳11和内胆12，内胆12内形成供冷媒蒸汽通过的过热通道，外壳11与内胆12之间的空间形成供冷媒液体通过的过冷通道，使得温度较高的冷媒液体与温度较低的冷媒蒸汽进行热交换，可以提高冷媒液体的过冷度和冷媒蒸汽的过热度，从而提高单位质量冷媒的制热量/制冷量，以及提高压缩机吸气过热度和油温过热度，减少液击的可能性，进而提高压缩机的可靠性。本发明的气液分离器采用冷媒液体直接在外壳11与内胆12之间的空间流动，并与在内胆12内流动的冷媒蒸汽进行换热，换热结构为两独立的整体结构；而现有技术的气液分离器采用冷媒液体在过冷管内流动，并与气管内冷媒蒸汽进行换热，过冷管可能需要设置多个，另外，过冷管还需要设计成迂曲结构，可见，本发明的气液分离器的结构更为简化，可以降低成本，并为拆装提供便利。According to the present invention, the outer casing 11 and the inner casing 12 are provided, and the inner casing 12 forms a superheat passage through which the refrigerant vapor passes. The space between the outer casing 11 and the inner casing 12 forms a subcooling passage through which the refrigerant liquid passes, so that the refrigerant having a higher temperature is formed. The heat exchange between the liquid and the lower temperature refrigerant vapor can improve the subcooling of the refrigerant liquid and the superheat of the refrigerant vapor, thereby increasing the heating/cooling capacity per unit mass of the refrigerant, and increasing the suction superheat and oil temperature of the compressor. Superheat, reduce the possibility of liquid hammer, and thus improve the reliability of the compressor. The gas-liquid separator of the present invention uses a refrigerant liquid to directly flow in a space between the outer casing 11 and the inner casing 12, and exchanges heat with the refrigerant vapor flowing in the inner casing 12, and the heat exchange structure has two independent integral structures; The prior art gas-liquid separator uses a refrigerant liquid to flow in the supercooling pipe and exchange heat with the refrigerant vapor in the gas pipe, and the supercooling pipe may need to be provided in plurality. In addition, the supercooling pipe also needs to be designed as a tortuous structure, visible, The structure of the gas-liquid separator of the invention is more simplified, the cost can be reduced, and the disassembly and assembly can be facilitated.

于本发明的一些实施例中，进液管15具有分别供制冷/制热模式的冷媒液体通过的第一入口151和第二入口152。空调机组运行时具有制冷/制热模式，在制冷/制热模式时，冷媒流向是不同的，进入气液分离器的时机也是不同的，例如，在制冷模式时，由冷凝器排出的液态冷媒进入气液分离器实现冷媒过冷，在制热模式时，由蒸发器排出的液态冷媒进入气液分离器实现冷媒过冷，因此，制冷/制热模式时冷媒过冷的管路结构是不同的，本发明的气液分离器的过冷通道的进液管带有两个入口(第一入口151和第二入口152)，可以配合相应管路很好的适应机组的制冷/制热模式，相对于现有技术只公开通过进液管引入冷媒液体，本发明具有可操作性强的优点。In some embodiments of the invention, the inlet tube 15 has a first inlet 151 and a second inlet 152 for the passage of refrigerant liquid in a refrigeration/heating mode, respectively. The air conditioning unit has a cooling/heating mode during operation. In the cooling/heating mode, the flow direction of the refrigerant is different, and the timing of entering the gas-liquid separator is also different. For example, in the cooling mode, the liquid refrigerant discharged from the condenser Entering the gas-liquid separator to achieve supercooling of the refrigerant. In the heating mode, the liquid refrigerant discharged from the evaporator enters the gas-liquid separator to achieve supercooling of the refrigerant. Therefore, the piping structure of the refrigerant supercooled in the cooling/heating mode is different. The inlet pipe of the subcooling passage of the gas-liquid separator of the present invention has two inlets (a first inlet 151 and a second inlet 152), which can be well adapted to the refrigeration/heating mode of the unit. Compared with the prior art, only the introduction of refrigerant through the inlet pipe is disclosed. Liquid, the present invention has the advantage of being highly operable.

进液管15还包括将流入第一入口151或第二入口152的冷媒液体引入至所述过冷通道的第三入口153，第三入口153被设置为外壳11内并靠近内胆12的上方，流过第三入口153的冷媒液体可由上至下喷淋内胆12，并与内胆12内的冷媒蒸汽进行热交换。本领域技术人员可以理解的是，本发明的第三入口153位于内胆12的上方位置，包括正上方、斜上方等位置，只要满足可以对内胆12进行喷淋换热都适用于本发明。优选地，第三入口153被设置为内胆12的顶部中心位置的正上方。本发明通过将第三入口153设置在内胆12的上方位置，可以使冷媒液体直接喷淋内胆完成换热，相对于现有技术设置均液管将冷媒液体分配到过冷管内进行换热的结构，显然，本发明的结构更为简单可行、易于实施。The inlet pipe 15 further includes a third inlet 153 that introduces refrigerant liquid flowing into the first inlet 151 or the second inlet 152 to the subcooling passage, and the third inlet 153 is disposed in the outer casing 11 and above the inner casing 12. The refrigerant liquid flowing through the third inlet 153 can spray the inner liner 12 from the top to the bottom and exchange heat with the refrigerant vapor in the inner liner 12. It will be understood by those skilled in the art that the third inlet 153 of the present invention is located above the inner liner 12, including the position directly above, obliquely upward, etc., as long as it can satisfy the spray heat transfer of the inner liner 12, which is suitable for the present invention. . Preferably, the third inlet 153 is disposed directly above the top center position of the liner 12. By setting the third inlet 153 to the upper position of the inner casing 12, the refrigerant liquid can be directly sprayed to the inner tank to complete the heat exchange, and the uniform liquid pipe is arranged to distribute the refrigerant liquid into the supercooled pipe for heat exchange. The structure of the present invention is apparently simpler, more feasible, and easier to implement.

作为本发明的一个示例，图3示出了进液管的一种结构，如图3所示，进液管15包括相互连接的第一支管154和第二支管155，第一支管154具有两管口，两个管口分别作为第一入口151和第二入口152，第二支管155具有两管口，其中之一的管口与第一支管154连通，另一管口作为第三入口153。第一入口151与第三入口153，以及第二入口152与第三入口153可选择性的连通或阻断，目的在于使由第一入口151或第二入口152引入的冷媒液体均能经第三入口153流至过冷通道内，提高热交换效率。实现上述的选择性连通或阻断的方式具有多种，例如，于第一支管与第二支管的交汇处设置三通阀；又如，于第一支管内设置两个截止阀。As an example of the present invention, FIG. 3 shows a structure of the inlet pipe. As shown in FIG. 3, the inlet pipe 15 includes a first branch pipe 154 and a second branch pipe 155 which are connected to each other, and the first branch pipe 154 has two. The nozzle has two nozzles as a first inlet 151 and a second inlet 152, respectively, and the second branch 155 has two nozzles, one of which is in communication with the first branch 154 and the other is used as the third inlet 153 . The first inlet 151 and the third inlet 153, and the second inlet 152 and the third inlet 153 are selectively connected or blocked, so that the refrigerant liquid introduced by the first inlet 151 or the second inlet 152 can pass through the first The three inlets 153 flow into the subcooling passage to improve heat exchange efficiency. There are various ways of achieving the above-described selective communication or blocking, for example, a three-way valve is provided at the intersection of the first branch pipe and the second branch pipe; for example, two shut-off valves are provided in the first branch pipe.

本发明的进液管15被设置为靠近外壳11的上端，出液管16被设置为靠近外壳11的下端。进液管15贯穿外壳11的顶盖延伸至内胆12的上方，出液管16贯穿外壳11的侧壁，可使外壳11内的过冷通道的冷媒液体顺利排出。本发明的进液管15、出液管16均可采用诸如铜管等材料制成，其与外壳11均可采用焊接等方式固定连接。The liquid inlet pipe 15 of the present invention is disposed close to the upper end of the outer casing 11, and the liquid discharge pipe 16 is disposed close to the lower end of the outer casing 11. The inlet pipe 15 extends through the top cover of the outer casing 11 to the upper side of the inner casing 12, and the liquid discharge pipe 16 penetrates the side wall of the outer casing 11, so that the refrigerant liquid in the supercooling passage in the outer casing 11 can be smoothly discharged. This hair The liquid inlet pipe 15 and the liquid outlet pipe 16 can be made of a material such as a copper pipe, and the casing 11 can be fixedly connected by welding or the like.

于本发明的一些实施例中，所述过热通道的进气管13、出气管14均可由外壳11外部延伸至内胆12内部，于内胆12内形成气液分离空间。由进气管13引入冷媒蒸汽经过热交换后升温形成干燥的气体从出气管14吸入到压缩机内。In some embodiments of the present invention, the intake pipe 13 and the air outlet pipe 14 of the superheat passage may extend from the outside of the outer casing 11 to the inner portion of the inner casing 12 to form a gas-liquid separation space in the inner casing 12. The refrigerant vapor introduced into the intake pipe 13 is subjected to heat exchange, and then heated to form a dry gas, which is sucked into the compressor from the gas outlet pipe 14.

优选地，进气管13位于内胆12内的管口与出气管14位于内胆12内的管口沿水平方向错开，错开距离优选地大于50mm。出气管14位于内胆12内的管口被设置在进气管13位于内胆12内的管口的上方，两者的高度差优选地大于50mm。如此设计目的在于，可使进气管13引入的冷媒蒸汽经过充分加热，液态转变为气态，然后再引入至出气管内，避免液击情况产生。出气管14位于所述内胆12内的管口相对于水平面成20～40°，优选为30°的斜切口。Preferably, the nozzle of the intake pipe 13 located in the inner casing 12 and the nozzle of the outlet pipe 14 located in the inner casing 12 are offset in the horizontal direction, and the offset distance is preferably greater than 50 mm. The nozzle of the outlet pipe 14 located in the inner casing 12 is disposed above the nozzle of the intake pipe 13 located in the inner casing 12, and the height difference between the two is preferably greater than 50 mm. The purpose of the design is that the refrigerant vapor introduced by the intake pipe 13 can be fully heated, the liquid state is converted into a gaseous state, and then introduced into the gas outlet pipe to avoid a liquid hammer situation. The nozzle of the outlet pipe 14 located in the inner casing 12 is inclined at an angle of 20 to 40, preferably 30, with respect to the horizontal.

优选地，出气管14为U形管结构，在U形管结构的底部设有一个或多个回液孔或回液管141，使得进入U形管结构的未完全蒸发的液体能够经由回液孔或回液管141进入气液分离器的内胆12的底部，以达到储存更多冷媒液体的目的，在机组缺少冷媒时，可以及时补充。回液孔的孔径或回液管141的内径大小为3～4mm，回液孔或回液管的数量可根据实际需要来确定。Preferably, the air outlet tube 14 is a U-shaped tube structure, and one or more liquid return holes or a liquid return tube 141 are provided at the bottom of the U-shaped tube structure, so that the liquid that has not completely evaporated into the U-shaped tube structure can pass through the liquid return. The hole or the return pipe 141 enters the bottom of the inner tank 12 of the gas-liquid separator to achieve the purpose of storing more refrigerant liquid, and can be replenished in time when the unit lacks the refrigerant. The diameter of the liquid return hole or the inner diameter of the liquid return pipe 141 is 3 to 4 mm, and the number of the liquid return hole or the liquid return pipe can be determined according to actual needs.

进气管13和出气管14均可采用诸如铜管等材料制作，其与外壳11和/或内胆12可采用焊接等方式固定连接。Both the intake pipe 13 and the air outlet pipe 14 may be made of a material such as a copper pipe, and the outer casing 11 and/or the inner casing 12 may be fixedly connected by welding or the like.

内胆12通过内胆支架17固定于外壳11内。内胆支架17可预先焊接固定于外壳11内，再使内胆12与内胆支架17通过焊接、卡接等方式固定。当然，本领域技术人员可以理解的是，以上的装配方式及固定方式只是一种具体的实现方式，本发明并不局限于此。The bladder 12 is secured within the outer casing 11 by a liner bracket 17. The inner bracket 17 can be pre-welded and fixed in the outer casing 11, and the inner casing 12 and the inner bracket 17 can be fixed by welding, snapping or the like. Of course, those skilled in the art can understand that the above assembly manner and the fixing manner are only one specific implementation manner, and the present invention is not limited thereto.

图4是本发明实施例提供的空调***的结构示意图。如图4所示，本发明提供的空调***，包括：室内机2和室外机3，室内机2包括第一换热器21，室外机3包括第二换热器31、压缩机32、气液分离器1、四通阀33和电子膨胀阀34，第一换热器21具有第一介质口211和第二介质口212，第二换热器31具有第三介质口311和第四介质口312，压缩机32具有压缩机入口321和压缩机出口322，压缩机入口321连接气液分离器1的出气管14，压缩机出口322连接四通阀33，气液分离器1的进气管13连接四通阀33，第一介质口211连接四通阀33，第三介质口311连接四通阀33；FIG. 4 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention. As shown in Figure 4, the present invention The air conditioning system provided includes: an indoor unit 2 and an outdoor unit 3, the indoor unit 2 includes a first heat exchanger 21, and the outdoor unit 3 includes a second heat exchanger 31, a compressor 32, a gas-liquid separator 1, and a four-way valve 33 and an electronic expansion valve 34 having a first medium port 211 and a second medium port 212, the second heat exchanger 31 having a third medium port 311 and a fourth medium port 312, the compressor 32 having compression a machine inlet 321 and a compressor outlet 322, a compressor inlet 321 is connected to the outlet pipe 14 of the gas-liquid separator 1, a compressor outlet 322 is connected to the four-way valve 33, and an intake pipe 13 of the gas-liquid separator 1 is connected to the four-way valve 33. a medium port 211 is connected to the four-way valve 33, and the third medium port 311 is connected to the four-way valve 33;

还包括第一支路35、第二支路36、第三支路37和第四支路38，其中，第一支路35连接第二介质口212与出液管16，第二支路36连接第四介质口312与第一入口151，第三支路37连接第四介质口312与出液管16，第四支路38连接第二介质口212与第二入口152，于第一支路35、第二支路36、第三支路37和第四支路38均设置有电磁阀39，用于控制各支路的通断。The first branch 35, the second branch 36, the third branch 37 and the fourth branch 38 are further included, wherein the first branch 35 connects the second medium port 212 with the liquid outlet tube 16, and the second branch 36 The fourth medium port 312 is connected to the first inlet 151, the third branch 37 is connected to the fourth medium port 312 and the outlet pipe 16, and the fourth branch 38 is connected to the second medium port 212 and the second inlet 152. The road 35, the second branch 36, the third branch 37, and the fourth branch 38 are each provided with a solenoid valve 39 for controlling the opening and closing of each branch.

本发明提供的空调***通过设置四个可控制通断的支路，与本发明的气液分离器相配合，可有效兼顾空调***的制冷/制热模式。当空调***处于制冷模式时，通过控制第一支路35和第二支路36导通，第三支路37和第四支路38阻断，由第二换热器31的第四介质口312流出的冷媒液体经第一入口151进入气液分离器1内，与气液分离器1内的冷媒蒸汽进行热交换，实现冷媒的过冷和压缩机32的吸气过热度；当空调***处于制热模式时，通过控制第一支路35和第二支路36阻断，第三支路37和第四支路38导通，由第一换热器21的第二介质口212流出的冷媒液体经第二入口152进入气液分离器1内，与气液分离器1内的冷媒蒸汽进行热交换，实现冷媒的过冷和压缩机32的吸气过热度。The air conditioning system provided by the invention cooperates with the gas-liquid separator of the invention by providing four branches capable of controlling on and off, and can effectively balance the cooling/heating mode of the air conditioning system. When the air conditioning system is in the cooling mode, by controlling the first branch 35 and the second branch 36 to be turned on, the third branch 37 and the fourth branch 38 are blocked, and the fourth medium port of the second heat exchanger 31 is blocked. The refrigerant liquid flowing out of 312 enters the gas-liquid separator 1 through the first inlet 151, and exchanges heat with the refrigerant vapor in the gas-liquid separator 1, thereby achieving supercooling of the refrigerant and suction superheat of the compressor 32; When in the heating mode, by controlling the first branch 35 and the second branch 36, the third branch 37 and the fourth branch 38 are turned on, and are discharged from the second medium port 212 of the first heat exchanger 21. The refrigerant liquid enters the gas-liquid separator 1 through the second inlet 152, and exchanges heat with the refrigerant vapor in the gas-liquid separator 1, thereby achieving supercooling of the refrigerant and suction superheat of the compressor 32.

具体地，四通阀33包括A、B、C、D四个阀口，第一介质口211连接所述阀口B，压缩机出口322连接阀口A，第三介质口311连接阀口D，进气管13连接阀口C。当处于制冷模式时，所述阀口A与所述阀口D导通，所述阀口B与所述阀口C导通；当处于制热模式时，所述阀口A与所述阀口B导通，所述阀口C与所述阀口D导通。Specifically, the four-way valve 33 includes four valve ports A, B, C, and D, the first medium port 211 is connected to the valve port B, the compressor outlet 322 is connected to the valve port A, and the third medium port 311 is connected to the valve port D. , intake pipe 13 Connect valve port C. When in the cooling mode, the valve port A is electrically connected to the valve port D, the valve port B is electrically connected to the valve port C; when in the heating mode, the valve port A and the valve are The port B is turned on, and the valve port C is electrically connected to the valve port D.

优选地，于出液管16与第一支路35或第三支路37之间依次设置有第一过滤器40、电子膨胀阀34和第二过滤器41。使冷媒液体在进入第一换热器21或第二换热器31前进行过滤和节流处理，进一步提高***的稳定性和效能。Preferably, a first filter 40, an electronic expansion valve 34, and a second filter 41 are sequentially disposed between the outlet pipe 16 and the first branch 35 or the third branch 37. The refrigerant liquid is subjected to filtration and throttling treatment before entering the first heat exchanger 21 or the second heat exchanger 31, thereby further improving the stability and performance of the system.

当然，本领域技术人员可以理解的是，本发明的空调***还包括风机等部件，由于并非本发明的改进之处，此处不作赘述。Of course, those skilled in the art can understand that the air conditioning system of the present invention further includes components such as a fan, and since it is not an improvement of the present invention, it will not be described herein.

本发明的实施例还提供了一种空调***的运行方法，图5是本发明实施例提供的空调***的制冷循环的工作原理图。如图5所示，当空调***处于制冷模式时，控制所述第一支路和第二支路导通，所述第三支路和第四支路阻断，吸入压缩机的冷媒被压缩后流经四通阀，进入第二换热器进行热交换，由第二换热器排出的冷媒液体从第二支路、所述进液管的第一入口进入所述气液分离器的过冷通道，与气液分离器内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，经热交换后的冷媒液体由出液管排出，经第一支路进入第一换热器进行热交换，由第一换热器排出的冷媒蒸汽流经四通阀从所述进气管进入所述气液分离器的过热通道，与气液分离器内的冷媒液体进行热交换，实现冷媒蒸汽的过热，经热交换后的冷媒蒸汽由出气管排出，再次被吸入压缩机，实现空调***的制冷循环。An embodiment of the present invention further provides an operation method of an air conditioning system, and FIG. 5 is a working principle diagram of a refrigeration cycle of the air conditioning system according to an embodiment of the present invention. As shown in FIG. 5, when the air conditioning system is in the cooling mode, the first branch and the second branch are controlled to be turned on, the third branch and the fourth branch are blocked, and the refrigerant sucked into the compressor is compressed. After flowing through the four-way valve, entering the second heat exchanger for heat exchange, the refrigerant liquid discharged from the second heat exchanger enters the gas-liquid separator from the second branch, the first inlet of the inlet pipe The supercooling passage exchanges heat with the refrigerant vapor in the gas-liquid separator to achieve supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange is discharged from the liquid discharge pipe, and enters the first heat exchanger through the first branch to perform heat. Exchanging, the refrigerant vapor discharged from the first heat exchanger flows through the four-way valve from the intake pipe into the superheat passage of the gas-liquid separator, and exchanges heat with the refrigerant liquid in the gas-liquid separator to realize the refrigerant vapor. After overheating, the refrigerant vapor after heat exchange is discharged from the gas outlet pipe, and is again sucked into the compressor to realize the refrigeration cycle of the air conditioning system.

图6是本发明实施例提供的空调***的制热循环的工作原理图。如图6所示，当空调***处于制热模式时，控制所述第一支路和第二支路阻断，所述第三支路和第四支路导通，吸入压缩机的冷媒被压缩后流经四通阀，进入第一换热器进行热交换，由第一换热器排出的冷媒液体从第四支路、所述进液管的第二入口进入所述气液分离器的过冷通道，与气液分离器内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，经热交换后的冷媒液体由出液管排出，经第三支路进入第二换热器进行热交换，由第二换热器排出的冷媒蒸汽流经四通阀从所述进气管进入所述气液分离器的过热通道，与气液分离器内的冷媒液体进行热交换，实现冷媒蒸汽的过热，经热交换后的冷媒蒸汽由出气管排出，再次被吸入压缩机，实现空调***的制热循环。FIG. 6 is a schematic diagram showing the operation of a heating cycle of an air conditioning system according to an embodiment of the present invention. As shown in FIG. 6, when the air conditioning system is in the heating mode, the first branch and the second branch are controlled to be blocked, the third branch and the fourth branch are turned on, and the refrigerant sucked into the compressor is After being compressed, flowing through the four-way valve, entering the first heat exchanger for heat exchange, and the refrigerant liquid discharged from the first heat exchanger is discharged from the fourth branch and the inlet pipe The second inlet enters the subcooling passage of the gas-liquid separator, and exchanges heat with the refrigerant vapor in the gas-liquid separator to realize supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange is discharged from the liquid discharge pipe, and the third The branch enters the second heat exchanger for heat exchange, and the refrigerant vapor discharged from the second heat exchanger flows through the four-way valve from the intake pipe into the superheat passage of the gas-liquid separator, and the gas-liquid separator The refrigerant liquid exchanges heat to realize superheating of the refrigerant vapor, and the refrigerant vapor after the heat exchange is discharged from the gas outlet pipe, and is again sucked into the compressor to realize the heating cycle of the air conditioning system.

图7是本发明实施例提供的空调***的制冷***流程图。具体地，如图7所示，当空调***处于制冷模式时，四通阀33的阀口A与阀口D导通，阀口B与阀口C导通，第一支路35和第二支路36上的电磁阀打开，使两支路导通，第三支路37和第四支路38上的电磁阀关闭，使两支路阻断，吸入压缩机32的冷媒被压缩后从压缩机出口322输出，流经四通阀33的阀口A和阀口D，由第三介质口311进入第二换热器31进行热交换，换热后的冷媒液体从第四介质口312进入第二支路36，从第一入口151进入气液分离器1的过冷通道，与气液分离器1内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，换热后的冷媒液体从出液管16输出依次经过第一过滤器40、电子膨胀阀39、第二过滤器41后进入第一支路35，从第二介质口212进入第一换热器21进行热交换，换热后的冷媒蒸汽从第一介质口211流经四通阀33的阀口B和阀口C，从进气管13进入气液分离器1的过热通道，与气液分离器1内的冷媒液体进行热交换，实现冷媒蒸汽的过热，换热后的冷媒蒸汽由出气管14输出，从压缩机进口321再次被吸入压缩机32，实现空调***的制冷循环。FIG. 7 is a flow chart of a refrigeration system of an air conditioning system according to an embodiment of the present invention. Specifically, as shown in FIG. 7, when the air conditioning system is in the cooling mode, the valve port A of the four-way valve 33 is open to the valve port D, the valve port B is open to the valve port C, and the first branch 35 and the second The solenoid valve on the branch 36 is opened to open the two branches, and the solenoid valves on the third branch 37 and the fourth branch 38 are closed, so that the two branches are blocked, and the refrigerant sucked into the compressor 32 is compressed. The compressor outlet 322 outputs, flows through the valve port A and the valve port D of the four-way valve 33, enters the second heat exchanger 31 through the third medium port 311 for heat exchange, and the heat-exchanged refrigerant liquid flows from the fourth medium port 312. The second branch 36 enters the sub-cooling passage of the gas-liquid separator 1 from the first inlet 151, and exchanges heat with the refrigerant vapor in the gas-liquid separator 1 to achieve supercooling of the refrigerant liquid and the refrigerant liquid after the heat exchange. The output from the outlet pipe 16 passes through the first filter 40, the electronic expansion valve 39, and the second filter 41, and then enters the first branch 35, and enters the first heat exchanger 21 from the second medium port 212 for heat exchange. The hot refrigerant vapor flows from the first medium port 211 through the valve port B and the valve port C of the four-way valve 33, and enters the superheat passage of the gas-liquid separator 1 from the intake pipe 13. The heat exchange between the refrigerant liquid in the gas-liquid separator 1 is performed to achieve superheating of the refrigerant vapor, and the refrigerant vapor after the heat exchange is output from the gas outlet pipe 14 and is again sucked into the compressor 32 from the compressor inlet 321 to realize the air conditioning system. Refrigeration cycle.

图8是本发明实施例提供的空调***的制热***流程图。具体地，如图8所示，当空调***处于制热模式时，四通阀33的阀口A与阀口B导通，阀口D与阀口C导通，第一支路35和第二支路36上的电磁阀关闭，使两支路阻断，第三支路37和第四支路38上的电磁阀打开，使两支路导通，吸入压缩机32的冷媒被压缩后从压缩机出口322输出，流经四通阀33的阀口A和阀口B，由第一介质口211进入第一换热器21进行热交换，换热后的冷媒液体从第二介质口212进入第四支路38，从第二入口152进入气液分离器1的过冷通道，与气液分离器1内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，换热后的冷媒液体从出液管16输出依次经过第一过滤器40、电子膨胀阀39、第二过滤器41后进入第三支路37，从第四介质口312进入第二换热器31进行热交换，换热后的冷媒蒸汽从第三介质口311流经四通阀33的阀口D和阀口C，从进气管13进入气液分离器1的过热通道，与气液分离器1内的冷媒液体进行热交换，实现冷媒蒸汽的过热，换热后的冷媒蒸汽由出气管14输出，从压缩机进口321再次被吸入压缩机32，实现空调***的制热循环。FIG. 8 is a flow chart of a heating system of an air conditioning system according to an embodiment of the present invention. Specifically, as shown in FIG. 8, when the air conditioning system is in the heating mode, the valve port A of the four-way valve 33 is open to the valve port B, the valve port D is open to the valve port C, and the first branch 35 and the first The solenoid valve on the two branches 36 is closed, so that the two branches are blocked. The solenoid valves on the third branch 37 and the fourth branch 38 are opened to open the two branches, and the refrigerant sucked into the compressor 32 is compressed and outputted from the compressor outlet 322, flowing through the port A of the four-way valve 33. And the valve port B, the first medium port 211 enters the first heat exchanger 21 for heat exchange, and the heat exchanged refrigerant liquid enters the fourth branch 38 from the second medium port 212, and enters the gas-liquid separation from the second inlet 152. The subcooling passage of the device 1 exchanges heat with the refrigerant vapor in the gas-liquid separator 1 to achieve supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange passes through the first filter 40 and electronic expansion from the outlet of the liquid discharge pipe 16 in sequence. The valve 39 and the second filter 41 then enter the third branch 37, enter the second heat exchanger 31 from the fourth medium port 312 for heat exchange, and the heat exchanged refrigerant vapor flows from the third medium port 311 through the four-way valve. Valve port D and port C of 33 enter the superheat passage of the gas-liquid separator 1 from the intake pipe 13 and exchange heat with the refrigerant liquid in the gas-liquid separator 1, thereby achieving overheating of the refrigerant vapor and refrigerant vapor after the heat exchange. Outputted from the air outlet pipe 14 and sucked into the compressor 32 again from the compressor inlet 321 to realize the air conditioning system Heating cycle.

在本说明书的描述中，参考术语“一些实施例”、“示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of the present specification, the description of the terms "some embodiments", "example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention. in. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

以上结合具体实施例描述了本发明的技术原理。这些描述只是为了解释本发明的原理，而不能以任何方式解释为对本发明保护范围的限制。基于此处的解释，本领域的技术人员不需要付出创造性的劳动即可联想到本发明的其它具体实施方式，这些方式都将落入本发明的保护范围之内。 The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are merely illustrative of the principles of the invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can devise various other embodiments of the present invention without departing from the scope of the invention.

Claims

一种气液分离器，其特征在于，包括：外壳(11)和内胆(12)分别构成的密闭空间，所述内胆(12)位于所述外壳(11)内；A gas-liquid separator, comprising: a sealed space formed by a casing (11) and a liner (12), wherein the inner casing (12) is located in the outer casing (11);

所述外壳(11)与所述内胆(12)之间的空间形成过冷通道，所述过冷通道具有用于引入冷媒液体的进液管(15)和将冷媒液体排出所述气液分离器的出液管(16)；A space between the outer casing (11) and the inner casing (12) forms a subcooling passage having an inlet pipe (15) for introducing a refrigerant liquid and discharging the refrigerant liquid from the gas liquid The outlet pipe of the separator (16);

所述内胆(12)内的空间形成过热通道，所述过热通道具有用于引入冷媒蒸汽的进气管(13)和将冷媒蒸汽排出所述气液分离器的出气管(14)；The space in the inner tank (12) forms a superheat passage having an intake pipe (13) for introducing refrigerant vapor and an outlet pipe (14) for discharging refrigerant vapor from the gas-liquid separator;

所述过冷通道内的冷媒液体与所述过热通道内的冷媒蒸汽进行热交换。The refrigerant liquid in the supercooling passage exchanges heat with the refrigerant vapor in the superheat passage.
根据权利要求1所述的气液分离器，其特征在于，所述进液管(15)具有分别供制冷/制热模式的冷媒液体通过的第一入口(151)和第二入口(152)。The gas-liquid separator according to claim 1, wherein said inlet pipe (15) has a first inlet (151) and a second inlet (152) through which a refrigerant liquid in a cooling/heating mode is passed, respectively. .
根据权利要求2所述的气液分离器，其特征在于，所述进液管(15)还包括将流入所述第一入口(151)或所述第二入口(152)的冷媒液体引入至所述过冷通道的第三入口(153)；The gas-liquid separator according to claim 2, wherein the inlet pipe (15) further comprises introducing a refrigerant liquid flowing into the first inlet (151) or the second inlet (152) to a third inlet (153) of the subcooling passage;

所述第三入口(153)被设置为所述外壳(11)内并靠近所述内胆(12)的上方，流过所述第三入口(153)的冷媒液体可由上至下喷淋所述内胆(12)，并与所述内胆(12)内的冷媒蒸汽进行热交换。The third inlet (153) is disposed in the outer casing (11) and adjacent to the inner casing (12), and the refrigerant liquid flowing through the third inlet (153) can be sprayed from top to bottom. The inner liner (12) is heat exchanged with the refrigerant vapor in the inner liner (12).
根据权利要求1所述的气液分离器，其特征在于，所述进气管(13)、所述出气管(14)均由所述外壳(11)外部延伸至所述内胆(12)内部；A gas-liquid separator according to claim 1, wherein said intake pipe (13) and said air outlet pipe (14) are each extended from the outside of said outer casing (11) to said inner casing (12) ;

所述进气管(13)位于所述内胆(12)内的管口与所述出气管(14)位于所述内胆(12)内的管口沿水平方向错开。The nozzle of the intake pipe (13) located in the inner casing (12) and the nozzle of the outlet pipe (14) located in the inner casing (12) are horizontally staggered.
根据权利要求4所述的气液分离器，其特征在于，所述出气管(14)位于所述内胆(12)内的管口被设置在所述进气管(13)位于所述内胆(12)内的管口的上方。 The gas-liquid separator according to claim 4, wherein a nozzle of the outlet pipe (14) located in the inner casing (12) is disposed at the inner casing (13) of the inner casing (12) Above the nozzle.
根据权利要求4所述的气液分离器，其特征在于，所述出气管(14)为U形管结构，在U形管结构的底部设有一个或多个回液孔或回液管(141)。The gas-liquid separator according to claim 4, wherein the gas outlet pipe (14) is a U-shaped pipe structure, and one or more liquid return holes or liquid return pipes are provided at the bottom of the U-shaped pipe structure ( 141).
一种空调***，包括：室内机(2)和室外机(3)；An air conditioning system comprising: an indoor unit (2) and an outdoor unit (3);

所述室内机(2)包括第一换热器(21)，所述第一换热器(21)具有第一介质口(211)和第二介质口(212)；The indoor unit (2) includes a first heat exchanger (21) having a first medium port (211) and a second medium port (212);

所述室外机(3)包括第二换热器(31)、压缩机(32)、四通阀(33)；所述第二换热器(31)具有第三介质口(311)和第四介质口(312)，所述压缩机(32)具有压缩机入口(321)和压缩机出口(322)；The outdoor unit (3) includes a second heat exchanger (31), a compressor (32), and a four-way valve (33); the second heat exchanger (31) has a third medium port (311) and a a four medium port (312), the compressor (32) having a compressor inlet (321) and a compressor outlet (322);

其特征在于，所述室外机(3)还包括：The outdoor unit (3) further includes:

权利要求2或3所述的气液分离器(1)，所述压缩机入口(321)连接所述气液分离器(1)的出气管(14)，所述压缩机出口(322)连接所述四通阀(33)，所述气液分离器(1)的进气管(13)连接所述四通阀(33)，所述第一介质口(211)连接所述四通阀(33)，所述第三介质口(311)连接所述四通阀(33)；A gas-liquid separator (1) according to claim 2 or 3, wherein said compressor inlet (321) is connected to an outlet pipe (14) of said gas-liquid separator (1), said compressor outlet (322) being connected The four-way valve (33), the intake pipe (13) of the gas-liquid separator (1) is connected to the four-way valve (33), and the first medium port (211) is connected to the four-way valve ( 33), the third medium port (311) is connected to the four-way valve (33);

第一支路(35)，所述第一支路(35)连接所述第二介质口(212)与所述出液管(16)；a first branch (35), the first branch (35) connecting the second medium port (212) and the liquid outlet tube (16);

第二支路(36)，所述第二支路(36)连接所述第四介质口(312)与所述第一入口(151)；a second branch (36), the second branch (36) connecting the fourth medium port (312) and the first inlet (151);

第三支路(37)，所述第三支路(37)连接所述第四介质口(312)与所述出液管(16)；a third branch (37), the third branch (37) connecting the fourth medium port (312) and the liquid outlet tube (16);

第四支路(38)，所述第四支路(38)连接所述第二介质口(212)与所述第二入口(152)；a fourth branch (38), the fourth branch (38) connecting the second medium port (212) and the second inlet (152);

其中，所述第一支路(35)、所述第二支路(36)、所述第三支路(37) 和第四支路(38)均设置有电磁阀(39)，用于控制各支路的通断。Wherein the first branch (35), the second branch (36), and the third branch (37) And the fourth branch (38) is provided with a solenoid valve (39) for controlling the on and off of each branch.
根据权利要求7所述的空调***，其特征在于，所述四通阀(33)具有A、B、C、D四个阀口，所述第一介质口(211)连接阀口B，所述压缩机出口(322)连接阀口A，所述第三介质口(311)连接阀口D，所述进气管(13)连接阀口C。The air conditioning system according to claim 7, wherein the four-way valve (33) has four valve ports A, B, C, and D, and the first medium port (211) is connected to the valve port B. The compressor outlet (322) is connected to the valve port A, the third medium port (311) is connected to the valve port D, and the intake pipe (13) is connected to the valve port C.
一种使用权利要求7所述的空调***的运行方法，其特征在于，当空调***处于制冷模式时，控制所述第一支路和第二支路导通，所述第三支路和第四支路阻断，吸入压缩机的冷媒被压缩后流经四通阀，进入第二换热器进行热交换，由第二换热器排出的冷媒液体从第二支路、所述进液管的第一入口进入所述气液分离器的过冷通道，与气液分离器内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，经热交换后的冷媒液体由出液管排出，经第一支路进入第一换热器进行热交换，由第一换热器排出的冷媒蒸汽流经四通阀从所述进气管进入所述气液分离器的过热通道，与气液分离器内的冷媒液体进行热交换，实现冷媒蒸汽的过热，经热交换后的冷媒蒸汽由出气管排出，再次被吸入压缩机，实现空调***的制冷循环；或者，An operating method using the air conditioning system according to claim 7, wherein when the air conditioning system is in the cooling mode, the first branch and the second branch are controlled to be turned on, the third branch and the third The four branches are blocked, the refrigerant sucked into the compressor is compressed, flows through the four-way valve, enters the second heat exchanger for heat exchange, and the refrigerant liquid discharged from the second heat exchanger flows from the second branch, the liquid The first inlet of the tube enters the subcooling passage of the gas-liquid separator, and exchanges heat with the refrigerant vapor in the gas-liquid separator to achieve supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange is discharged from the liquid discharge pipe. The first branch enters the first heat exchanger for heat exchange, and the refrigerant vapor discharged from the first heat exchanger flows through the four-way valve from the intake pipe into the superheat passage of the gas-liquid separator, and is separated from the gas and liquid. The refrigerant liquid in the device exchanges heat to realize superheating of the refrigerant vapor, and the refrigerant vapor after the heat exchange is discharged from the gas outlet pipe, and is again sucked into the compressor to realize the refrigeration cycle of the air conditioning system; or

当空调***处于制热模式时，控制所述第一支路和第二支路阻断，所述第三支路和第四支路导通，吸入压缩机的冷媒被压缩后流经四通阀，进入第一换热器进行热交换，由第一换热器排出的冷媒液体从第四支路、所述进液管的第二入口进入所述气液分离器的过冷通道，与气液分离器内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，经热交换后的冷媒液体由出液管排出，经第三支路进入第二换热器进行热交换，由第二换热器排出的冷媒蒸汽流经四通阀从所述进气管进入所述气液分离器的过热通道，与气液分离器内的冷媒液体进行热交换，实现冷媒蒸汽的过热，经热交换后的冷媒蒸汽由出气管排出，再次被吸入压缩机，实现空调***的制热循环。When the air conditioning system is in the heating mode, the first branch and the second branch are controlled to be blocked, the third branch and the fourth branch are turned on, and the refrigerant sucked into the compressor is compressed and flows through the cross. a valve enters the first heat exchanger for heat exchange, and the refrigerant liquid discharged from the first heat exchanger enters the subcooling passage of the gas-liquid separator from the fourth branch, the second inlet of the inlet pipe, and The refrigerant vapor in the gas-liquid separator exchanges heat to realize supercooling of the refrigerant liquid, and the refrigerant liquid after the heat exchange is discharged from the liquid discharge pipe, and enters the second heat exchanger through the third branch for heat exchange, and is second. The refrigerant vapor discharged from the heat exchanger flows through the four-way valve from the intake pipe into the superheat passage of the gas-liquid separator, and exchanges heat with the refrigerant liquid in the gas-liquid separator to realize superheating of the refrigerant vapor, and heat exchange. After the refrigerant vapor is discharged from the air outlet, it is inhaled again. The compressor realizes the heating cycle of the air conditioning system.
一种使用权利要求8所述的空调***的运行方法，其特征在于，当空调***处于制冷模式时，所述四通阀(33)的阀口A与阀口D导通，阀口B与阀口C导通，所述第一支路(35)和所述第二支路(36)上的电磁阀打开，使两支路导通，所述第三支路(37)和所述第四支路(38)上的电磁阀关闭，使两支路阻断，吸入所述压缩机(32)的冷媒被压缩后从压缩机出口(322)输出，流经所述四通阀(33)的阀口A和阀口D，由所述第三介质口(311)进入所述第二换热器(31)进行热交换，换热后的冷媒液体从所述第四介质口(312)进入所述第二支路(36)，从所述第一入口(151)进入所述气液分离器(1)的过冷通道，与所述气液分离器(1)内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，换热后的冷媒液体从所述出液管(16)输出进入所述第一支路(35)，从所述第二介质口(212)进入所述第一换热器(21)进行热交换，换热后的冷媒蒸汽从所述第一介质口(211)流经所述四通阀(33)的阀口B和阀口C，从所述进气管(13)进入所述气液分离器(1)的过热通道，与所述气液分离器(1)内的冷媒液体进行热交换，实现冷媒蒸汽的过热，换热后的冷媒蒸汽由所述出气管(14)输出，从所述压缩机进口(321)再次被吸入压缩机(32)，实现空调***的制冷循环；或者，An operating method using the air conditioning system according to claim 8, wherein when the air conditioning system is in the cooling mode, the valve port A of the four-way valve (33) is electrically connected to the valve port D, and the valve port B is The valve port C is turned on, the first branch (35) and the solenoid valve on the second branch (36) are opened to open the two branches, the third branch (37) and the The solenoid valve on the fourth branch (38) is closed, blocking the two branches, and the refrigerant sucked into the compressor (32) is compressed and outputted from the compressor outlet (322), flowing through the four-way valve ( 33) the valve port A and the valve port D, the third medium port (311) enters the second heat exchanger (31) for heat exchange, and the heat exchanged refrigerant liquid is discharged from the fourth medium port ( 312) entering the second branch (36), entering the subcooling passage of the gas-liquid separator (1) from the first inlet (151), and the refrigerant in the gas-liquid separator (1) The steam exchanges heat to achieve supercooling of the refrigerant liquid, and the heat exchanged refrigerant liquid is output from the liquid discharge pipe (16) into the first branch (35), and enters from the second medium port (212). The first heat exchanger (21) performs heat exchange and exchange The subsequent refrigerant vapor flows from the first medium port (211) through the valve port B and the valve port C of the four-way valve (33), and enters the gas-liquid separator from the intake pipe (13) (1) a superheat passage for heat exchange with the refrigerant liquid in the gas-liquid separator (1) to achieve superheating of the refrigerant vapor, and the refrigerant vapor after the heat exchange is output from the outlet pipe (14) from the compressor The inlet (321) is again sucked into the compressor (32) to achieve a refrigeration cycle of the air conditioning system; or

当空调***处于制热模式时，所述四通阀(33)的阀口A与阀口B导通，阀口D与阀口C导通，所述第一支路(35)和所述第二支路(36)上的电磁阀关闭，使两支路阻断，所述第三支路(37)和所述第四支路(38)上的电磁阀打开，使两支路导通，吸入所述压缩机(32)的冷媒被压缩后从所述压缩机出口(322)输出，流经所述四通阀(33)的阀口A和阀口B，由所述第一介质口(211)进入所述第一换热器(21)进行热交换，换热后的冷媒液体从所述第二介质口(212)进入所述第四支路(38)，从所述第二入口(152)进入所述气液分离器(1)的过冷通道，与所述气液分离器(1)内的冷媒蒸汽进行热交换，实现冷媒液体的过冷，换热后的冷媒液体从所述出液管(16)输出进入所述第三支路(37)，从所述第四介质口(312)进入所述第二换热器(31)进行热交换，换热后的冷媒蒸汽从所述第三介质口(311)流经所述四通阀(33)的阀口D和阀口C，从所述进气管(13)进入所述气液分离器(1)的过热通道，与所述气液分离器(1)内的冷媒液体进行热交换，实现冷媒蒸汽的过热，换热后的冷媒蒸汽由所述出气管(14)输出，从所述压缩机进口(321)再次被吸入压缩机(32)，实现空调***的制热循环。 When the air conditioning system is in the heating mode, the valve port A of the four-way valve (33) is electrically connected to the valve port B, and the valve port D is electrically connected to the valve port C, the first branch (35) and the The solenoid valve on the second branch (36) is closed, blocking the two branches, and the solenoid valves on the third branch (37) and the fourth branch (38) are opened to make the two guides Passing, the refrigerant sucked into the compressor (32) is compressed and outputted from the compressor outlet (322), flowing through the valve port A and the valve port B of the four-way valve (33), by the first The medium port (211) enters the first heat exchanger (21) for heat exchange, and the heat exchanged refrigerant liquid is from the second a medium port (212) enters the fourth branch (38), enters the subcooling passage of the gas-liquid separator (1) from the second inlet (152), and the gas-liquid separator (1) The refrigerant vapor inside is subjected to heat exchange to achieve supercooling of the refrigerant liquid, and the heat exchanged refrigerant liquid is output from the liquid discharge pipe (16) into the third branch (37) from the fourth medium port ( 312) entering the second heat exchanger (31) for heat exchange, and the heat exchanged refrigerant vapor flows from the third medium port (311) through the valve port D and the valve port of the four-way valve (33) C, entering the superheat passage of the gas-liquid separator (1) from the intake pipe (13), performing heat exchange with the refrigerant liquid in the gas-liquid separator (1) to realize superheating and heat exchange of the refrigerant vapor The subsequent refrigerant vapor is output from the gas outlet pipe (14), and is again sucked into the compressor (32) from the compressor inlet (321) to realize a heating cycle of the air conditioning system.