CN108036465A - Pressure for air conditioner test adjusts simulator and its operating method - Google Patents
Pressure for air conditioner test adjusts simulator and its operating method Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000011017 operating method Methods 0.000 title claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims description 57
- 239000003507 refrigerant Substances 0.000 claims description 21
- 238000004378 air conditioning Methods 0.000 claims description 12
- 238000013507 mapping Methods 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 39
- 238000004088 simulation Methods 0.000 abstract description 38
- 238000012356 Product development Methods 0.000 abstract description 6
- 210000003437 trachea Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
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- 238000004364 calculation method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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Abstract
本发明属于空调器技术领域，具体涉及一种用于空调测试的压力调节模拟装置及其操作方法。为了解决现有多联机系统在新产品开发阶段模拟高落差、长配管环境时投入巨大、费时费力的问题，本发明的压力调节模拟装置包括流体管路、第一压力传感器、第二压力传感器和流量调节装置，第一压力传感器、流量调节装置和第二压力传感器依次串联设置于流体管路上；当流体在流体管路中流动时，第一压力传感器检测流体的第一压力，第二压力传感器检测流体的第二压力，流量调节装置的开度根据第一压力与第二压力之间的差值被控制，以便模拟空调测试所需的管路压差。本发明极大地减轻了多联机系统在新产品开发阶段的巨大投入，省时省力，节约成本。
The invention belongs to the technical field of air conditioners, and in particular relates to a pressure regulation simulation device for air conditioner testing and an operating method thereof. In order to solve the problem of huge investment, time-consuming and labor-intensive investment in simulating high drop and long piping environment in the new product development stage of the existing multi-line system, the pressure regulation simulation device of the present invention includes a fluid pipeline, a first pressure sensor, a second pressure sensor and The flow regulating device, the first pressure sensor, the flow regulating device and the second pressure sensor are sequentially arranged on the fluid pipeline in series; when the fluid flows in the fluid pipeline, the first pressure sensor detects the first pressure of the fluid, and the second pressure sensor The second pressure of the fluid is detected, and the opening of the flow regulating device is controlled according to the difference between the first pressure and the second pressure, so as to simulate the pipeline pressure difference required by the air conditioner test. The invention greatly reduces the huge investment of the multi-line system in the new product development stage, saves time, labor and cost.
Description
技术领域technical field
本发明属于空调器技术领域，具体涉及一种用于空调测试的压力调节模拟装置及其操作方法。The invention belongs to the technical field of air conditioners, and in particular relates to a pressure regulation simulation device for air conditioner testing and an operating method thereof.
背景技术Background technique
多联机系统俗称“一拖多”，通常指的是一台室外机通过配管连接若干台室内机而组成的冷媒循环系统。多联机系统往往是安装在高落差、长配管的环境，这种环境中的管路高度和长度会造成冷媒的压力损失，而冷媒在循环过程中的压损又直接影响空调器的制冷/制热效果。因此，在新产品的开发阶段，往往需要根据应用环境对多联机系统进行测试，但是这种高落差、长配管的环境如果通过实体设备来模拟，无论是装机成本还是工作量都需要增加巨大的投入，费时费力。The multi-connected system is commonly known as "one-to-many", which usually refers to a refrigerant circulation system composed of one outdoor unit connected to several indoor units through piping. The multi-connected system is often installed in the environment with high drop and long piping. The height and length of the piping in this environment will cause the pressure loss of the refrigerant, and the pressure loss of the refrigerant during the cycle will directly affect the cooling/cooling of the air conditioner. heat effect. Therefore, in the development stage of new products, it is often necessary to test the multi-connected system according to the application environment. However, if the environment with high drop and long piping is simulated by physical equipment, both the installation cost and the workload need to be greatly increased. Invest in time and effort.
因此，本发明提出了一种新的装置和方法来解决上述问题。Therefore, the present invention proposes a new device and method to solve the above problems.
发明内容Contents of the invention
为了解决现有技术中的上述问题，即为了解决现有多联机系统在新产品开发阶段模拟高落差、长配管环境时投入巨大、费时费力的问题，本发明提供了一种用于空调测试的压力调节模拟装置，所述压力调节模拟装置包括流体管路、第一压力传感器、第二压力传感器和流量调节装置，所述第一压力传感器、所述流量调节装置和所述第二压力传感器依次串联设置于所述流体管路上；当流体在所述流体管路中流动时，所述第一压力传感器检测所述流体的第一压力，所述第二压力传感器检测所述流体的第二压力，所述流量调节装置的开度根据所述第一压力与所述第二压力之间的差值被控制，以便模拟空调测试所需的管路压差。In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of huge investment, time-consuming and labor-intensive when the existing multi-line system simulates the environment of high drop and long piping in the new product development stage, the present invention provides an air-conditioning test. A pressure regulation simulation device, the pressure regulation simulation device includes a fluid pipeline, a first pressure sensor, a second pressure sensor and a flow regulation device, the first pressure sensor, the flow regulation device and the second pressure sensor in sequence arranged in series on the fluid pipeline; when the fluid flows in the fluid pipeline, the first pressure sensor detects the first pressure of the fluid, and the second pressure sensor detects the second pressure of the fluid , the opening of the flow regulating device is controlled according to the difference between the first pressure and the second pressure, so as to simulate the pipeline pressure difference required by the air conditioner test.
在上述压力调节模拟装置的优选实施方式中，所述流体管路包括液体管路；所述第一压力传感器包括设置于所述液体管路上的第一液管压力传感器，所述第二压力传感器包括设置于所述液体管路上的第二液管压力传感器，所述流量调节装置包括设置于所述液体管路上并且位于所述第一液管压力传感器与所述第二液管压力传感器之间的液体流量调节装置。In a preferred embodiment of the above-mentioned pressure regulation simulation device, the fluid pipeline includes a liquid pipeline; the first pressure sensor includes a first liquid pipe pressure sensor disposed on the liquid pipeline, and the second pressure sensor It includes a second liquid pipe pressure sensor arranged on the liquid pipeline, and the flow regulating device includes a second liquid pipe pressure sensor arranged on the liquid pipeline and located between the first liquid pipe pressure sensor and the second liquid pipe pressure sensor. liquid flow regulator.
在上述压力调节模拟装置的优选实施方式中，所述流体管路包括气体管路；所述第一压力传感器包括设置于所述气体管路上的第一气管压力传感器，所述第二压力传感器包括设置于所述气体管路上的第二气管压力传感器，所述流量调节装置包括设置于所述气体管路上并且位于所述第一气管压力传感器与所述第二气管压力传感器之间的气体流量调节装置。In a preferred embodiment of the above-mentioned pressure regulation simulation device, the fluid pipeline includes a gas pipeline; the first pressure sensor includes a first trachea pressure sensor disposed on the gas pipeline, and the second pressure sensor includes a second trachea pressure sensor arranged on the gas pipeline, and the flow adjustment device includes a gas flow adjustment device arranged on the gas pipeline and between the first trachea pressure sensor and the second trachea pressure sensor device.
在上述压力调节模拟装置的优选实施方式中，所述流体管路还包括气体管路；所述第一压力传感器还包括设置于所述气体管路上的第一气管压力传感器，所述第二压力传感器还包括设置于所述气体管路上的第二气管压力传感器，所述流量调节装置还包括设置于所述气体管路上并且位于所述第一气管压力传感器与所述第二气管压力传感器之间的气体流量调节装置。In a preferred embodiment of the above-mentioned pressure regulation simulation device, the fluid pipeline also includes a gas pipeline; the first pressure sensor also includes a first airway pressure sensor arranged on the gas pipeline, and the second pressure The sensor also includes a second trachea pressure sensor disposed on the gas pipeline, and the flow regulating device further includes a second trachea pressure sensor disposed on the gas pipeline and located between the first trachea pressure sensor and the second trachea pressure sensor. gas flow regulator.
在上述压力调节模拟装置的优选实施方式中，所述液体流量调节装置包括并联设置的至少两个液管压力调节膨胀阀。In a preferred embodiment of the above pressure regulation simulation device, the liquid flow regulation device includes at least two liquid pipe pressure regulation expansion valves arranged in parallel.
在上述压力调节模拟装置的优选实施方式中，所述气体流量调节装置包括并联设置的至少两个气管压力调节膨胀阀。In a preferred embodiment of the above-mentioned pressure regulation simulation device, the gas flow regulation device includes at least two tracheal pressure regulation expansion valves arranged in parallel.
在上述压力调节模拟装置的优选实施方式中，所述液管压力调节膨胀阀和/或所述气管压力调节膨胀阀为电子膨胀阀。In a preferred embodiment of the above-mentioned pressure regulation simulation device, the liquid pipe pressure regulation expansion valve and/or the gas pipe pressure regulation expansion valve are electronic expansion valves.
在上述压力调节模拟装置的优选实施方式中，所述压力调节模拟装置用于模拟多联机空调系统在高落差、长配管环境中的压力损失值；所述压力调节模拟装置设置于室外机与室内机之间的联机管路中；并且/或者所述压力调节模拟装置设置于多联机空调系统的每台室内机的进气/进液管路中。In a preferred embodiment of the above-mentioned pressure regulation simulation device, the pressure regulation simulation device is used to simulate the pressure loss value of the multi-connected air-conditioning system in a high drop and long piping environment; the pressure regulation simulation device is arranged between the outdoor unit and the indoor unit. and/or the pressure regulation simulation device is set in the intake/liquid intake pipeline of each indoor unit of the multi-connected air-conditioning system.
本发明还提供了一种压力调节模拟装置的操作方法，所述压力调节模拟装置为上述的压力调节模拟装置，所述操作方法包括：获取所述第一压力传感器的第一压力值以及所述第二压力传感器的第二压力值；计算所述第一压力值与所述第二压力值的差值；根据所述差值调节所述流量调节装置的开度。The present invention also provides an operation method of a pressure regulation simulation device, the pressure regulation simulation device is the above-mentioned pressure regulation simulation device, and the operation method includes: obtaining the first pressure value of the first pressure sensor and the the second pressure value of the second pressure sensor; calculating the difference between the first pressure value and the second pressure value; adjusting the opening degree of the flow regulating device according to the difference.
在上述操作方法的优选实施方式中，“根据所述差值调节所述流量调节装置的开度”的步骤具体包括：根据预设的压力损失对照表获取期望的压力损失值；将所述差值与所述期望的压力损失值进行比较；根据比较结果调节所述流量调节装置的开度；其中，所述预设的压力损失对照表为多联机空调系统中的冷媒压力损失与联机管径、长度的映射关系表In a preferred embodiment of the above operating method, the step of "adjusting the opening of the flow regulating device according to the difference" specifically includes: obtaining the expected pressure loss value according to a preset pressure loss comparison table; Value is compared with the expected pressure loss value; according to the comparison result, the opening of the flow regulating device is adjusted; wherein, the preset pressure loss comparison table is the refrigerant pressure loss and the online pipe diameter in the multi-line air conditioning system , length mapping table
在本发明的技术方案中，利用压力调节模拟装置来模拟多联机系统中冷媒的压力损失，不需要再利用实体设备模拟高落差、长配管的环境，从而极大地减轻了多联机系统在新产品开发阶段的巨大投入，省时省力，节约成本。并且，本发明的压力调节模拟装置结构简单，根据两个压力传感器的压力差，结合压力损失对照表控制流量调节阀的开度，控制冷媒的流量以达到期望的压力损失值，操作便捷。In the technical solution of the present invention, the pressure regulation simulation device is used to simulate the pressure loss of the refrigerant in the multi-line system, and there is no need to use physical equipment to simulate the environment of high drop and long piping, thereby greatly reducing the pressure of the multi-line system on new products. The huge investment in the development stage saves time, labor and cost. Moreover, the pressure regulation simulation device of the present invention has a simple structure, controls the opening of the flow regulating valve according to the pressure difference between the two pressure sensors and the pressure loss comparison table, controls the flow of the refrigerant to achieve the desired pressure loss value, and is easy to operate.
附图说明Description of drawings
图1是现有多联机系统的安装结构示意图；Fig. 1 is the installation structure schematic diagram of existing multi-line system;
图2是本发明的压力调节装置应用于多联机系统测试中的结构示意图；Fig. 2 is a schematic structural view of the application of the pressure regulating device of the present invention in the multi-line system test;
图3是本发明的压力调节模拟装置的结构原理图；Fig. 3 is a structural principle diagram of the pressure regulation simulation device of the present invention;
图4是本发明的压力调节模拟装置的操作方法的流程图。Fig. 4 is a flowchart of the operation method of the pressure regulation simulation device of the present invention.
具体实施方式Detailed ways
为使本发明的实施例目的、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，所述描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。In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, and Not all examples. 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 protection scope of the present invention.
首先参照图1，图1是现有多联机系统的安装结构示意图。如图1所示，现有多联机系统往往安装在往往是安装在高落差、长配管(落差高度和配管长度不限于具体数值)的环境，因而冷媒在室外机组和室内机之间流动的过程中会出现一定的压力损失。通过试验获得的冷媒压力损失与联机管径、长度的关系如表1：Referring first to FIG. 1 , FIG. 1 is a schematic diagram of an installation structure of an existing multi-line system. As shown in Figure 1, the existing multi-split system is often installed in an environment with high drop and long piping (the height of the drop and the length of the piping are not limited to specific values), so the refrigerant flows between the outdoor unit and the indoor unit. There will be a certain pressure loss. The relationship between the pressure loss of the refrigerant obtained through the test and the diameter and length of the on-line pipe is shown in Table 1:
表1Table 1
举例而言，假设：室外机组到室内机组的联机管长度为X米，联机管的液管管径为15.88mm，联机管的气管管径为25.4mm；根据表1可以计算出冷媒在室外机组与室内机组之间的压力损失情况为：液管压力损失值为△P液＝△P4*X/5；气管压力损失值为△P气＝△P7*X/5，单位为bar。For example, assume: the length of the connecting pipe from the outdoor unit to the indoor unit is X meters, the diameter of the liquid pipe of the connecting pipe is 15.88mm, and the diameter of the gas pipe of the connecting pipe is 25.4mm; The pressure loss between the indoor unit and the indoor unit is: the pressure loss value of the liquid pipe is △P liquid =△P 4 *X/5; the pressure loss value of the air pipe is △P gas =△P 7 *X/5, and the unit is bar.
由于冷媒在循环过程中的压损会直接影响空调器的制冷/制热效果。因此，在新产品的开发阶段，往往需要根据应用环境对多联机系统进行测试，但是这种高落差、长配管的环境如果通过实体设备来模拟，费时费力。基于此，本发明提出了一种用于空调测试的压力调节模拟装置，其包括流体管路、第一压力传感器、第二压力传感器和流量调节装置；第一压力传感器、流量调节装置、第二压力传感器一次串联设置于流体管路上，使得流体管路中的流体依次流过第一压力传感器、流量调节装置和第二压力传感器。当流体在流体管路中流动时，第一压力传感器用于检测流体的第一压力，第二压力传感器用于检测流体的第二压力，流量调节装置的开度根据第一压力与第二压力之间的差值被控制，以便模拟空调测试所需的管路压差。The pressure loss of the refrigerant during the cycle will directly affect the cooling/heating effect of the air conditioner. Therefore, in the development stage of new products, it is often necessary to test the multi-line system according to the application environment. However, if the environment with high drop and long piping is simulated by physical equipment, it will be time-consuming and labor-intensive. Based on this, the present invention proposes a pressure regulation simulation device for air conditioner testing, which includes a fluid pipeline, a first pressure sensor, a second pressure sensor and a flow regulating device; the first pressure sensor, the flow regulating device, the second The pressure sensors are arranged in series on the fluid pipeline so that the fluid in the fluid pipeline flows through the first pressure sensor, the flow regulating device and the second pressure sensor in sequence. When the fluid flows in the fluid pipeline, the first pressure sensor is used to detect the first pressure of the fluid, the second pressure sensor is used to detect the second pressure of the fluid, and the opening of the flow regulating device is based on the first pressure and the second pressure. The difference between is controlled to simulate the line pressure differential required for air conditioning testing.
需要说明的是，流量调节装置的开度可以由工作人员根据第一压力与第二压力之间的差值手动控制流量调节装置的开度，也可以增加一个控制器，由控制器根据第一压力与第二压力之间的差值自动控制流量调节装置的开度。这些都不脱离本发明的保护范围。It should be noted that the opening of the flow regulating device can be manually controlled by the staff according to the difference between the first pressure and the second pressure, or a controller can be added, and the controller can control the opening of the flow regulating device according to the first pressure. The difference between the pressure and the second pressure automatically controls the opening of the flow regulator. These all do not depart from the protection scope of the present invention.
在多联机系统的新产品开发阶段，利用该压力调节模拟装置模拟冷媒在联机管(即实际中的高落差、长配管环境)中的压力损失。参照图2，图2是本发明的压力调节装置应用于多联机系统测试中的结构示意图。如图2所示，由于本发明的压力调节模拟装置的操作便捷、结构简单，用该压力调节模拟装置模拟多联机系统的高落差、长配管环境后，只需要根据第一压力传感器和第二压力传感器之间的压力差即可计算出冷媒的实际压力损失值，然后再对照表1中的映射关系计算出期望的压力损失值，根据期望的压力损失值来调节流量调节装置的开度，以得到空调测试所需的管路压差。从而极大地减轻了多联机系统在新产品开发阶段的巨大投入，省时省力，节约成本。In the new product development stage of the multi-line system, the pressure regulation simulation device is used to simulate the pressure loss of the refrigerant in the line pipe (that is, the actual high drop and long pipe environment). Referring to FIG. 2 , FIG. 2 is a structural schematic view of the pressure regulating device of the present invention applied to the multi-line system test. As shown in Figure 2, due to the convenient operation and simple structure of the pressure regulation simulation device of the present invention, after using the pressure regulation simulation device to simulate the high drop and long piping environment of the multi-line system, only the first pressure sensor and the second The pressure difference between the pressure sensors can calculate the actual pressure loss value of the refrigerant, and then calculate the expected pressure loss value according to the mapping relationship in Table 1, and adjust the opening of the flow regulating device according to the expected pressure loss value. In order to obtain the pipeline pressure difference required for the air conditioner test. Thus greatly reducing the huge investment in the new product development stage of the multi-line system, saving time, labor and cost.
下面结合图3说明本发明的压力调节模拟装置的一种具体实施方式。A specific implementation of the pressure regulation simulation device of the present invention will be described below with reference to FIG. 3 .
图3是本发明的压力调节模拟装置的结构原理图。如图3所示，在本实施例中，压力调节模拟装置的流体管路包括液体管路11、第一压力传感器包括设置于液体管路11上的第一液管压力传感器12(用于检测液态冷媒在此处的第一液态压力)，第二压力传感器包括设置于液体管路11上的第二液管压力传感器13(用于检测液态冷媒在此处的第二液态压力)，流量调节装置包括设置于液体管路11上的液体流量调节装置14；液体流量调节装置14的开度根据第一液态压力与第二液态压力之间的差值被控制，以便模拟空调测试所需的管路压差。Fig. 3 is a structural principle diagram of the pressure regulation simulation device of the present invention. As shown in Figure 3, in this embodiment, the fluid pipeline of the pressure regulation simulation device includes a liquid pipeline 11, and the first pressure sensor includes a first liquid pipe pressure sensor 12 (for detecting The first liquid pressure of the liquid refrigerant here), the second pressure sensor includes the second liquid pipe pressure sensor 13 (used to detect the second liquid pressure of the liquid refrigerant here) arranged on the liquid pipeline 11, the flow adjustment The device includes a liquid flow regulating device 14 arranged on the liquid pipeline 11; the opening of the liquid flow regulating device 14 is controlled according to the difference between the first liquid pressure and the second liquid pressure, so as to simulate the pipeline required for air conditioning testing. differential road pressure.
在本实施例中，压力调节模拟装置的流体管路还包括气体管路21、第一压力传感器还包括设置于气体管路21上的第一气管压力传感器22(用于检测气态冷媒在此处的第一气态压力)，第二压力传感器还包括设置于气体管路21上的第二气管压力传感器23(用于检测气态冷媒在此处的第二气态压力)，流量调节装置还包括设置于气体管路21上的气体流量调节装置24；气体流量调节装置24的开度根据第一气态压力与第二气态压力之间的差值被控制，以便模拟空调测试所需的管路压差。In this embodiment, the fluid pipeline of the pressure regulation simulation device also includes a gas pipeline 21, and the first pressure sensor also includes a first gas pipe pressure sensor 22 arranged on the gas pipeline 21 (for detecting gaseous refrigerant here the first gaseous pressure), the second pressure sensor also includes a second gas pipe pressure sensor 23 (used to detect the second gaseous pressure of the gaseous refrigerant here) arranged on the gas pipeline 21, and the flow regulating device also includes a second gaseous pressure sensor arranged on the gas pipeline 21. The gas flow regulating device 24 on the gas pipeline 21; the opening of the gas flow regulating device 24 is controlled according to the difference between the first gaseous pressure and the second gaseous pressure, so as to simulate the pipeline pressure difference required by the air conditioning test.
在上述实施例中，压力调节模拟装置既包括液体管路11也包括气体管路21，在多联机系统中，室外机组与室内机组之间的液体联机管与液体管路11连接，气体联机管与气体管路21连接。液体流量调节装置14的开度根据第一液态压力与第二液态压力之间的差值被控制、气体流量调节装置24的开度根据第一气态压力与第二气态压力之间的差值被控制。In the above embodiments, the pressure regulation simulation device includes both the liquid pipeline 11 and the gas pipeline 21. In the multi-connected system, the liquid connected pipe between the outdoor unit and the indoor unit is connected to the liquid pipeline 11, and the gas connected pipe Connected to the gas line 21. The opening of the liquid flow regulating device 14 is controlled according to the difference between the first liquid pressure and the second liquid pressure, and the opening of the gas flow regulating device 24 is controlled according to the difference between the first gas pressure and the second gas pressure. control.
除此之外，本发明的压力调节模拟模块还可以设置于多联机空调系统的每台室内机的进气/进液管路中。这种情况下，压力调节模拟装置可以只包括液体管路11或者只包括气体管路21。也就是说，本发明的压力调节模拟装置的结构可以根据具体的应用场景进行灵活设置。In addition, the pressure regulation simulation module of the present invention can also be arranged in the air intake/liquid intake pipeline of each indoor unit of the multi-connected air conditioning system. In this case, the pressure regulation simulation device may comprise only the liquid line 11 or only the gas line 21 . That is to say, the structure of the pressure regulation simulation device of the present invention can be flexibly set according to specific application scenarios.
在一种优选的实施方式中，液体流量调节装置14包括并联设置的至少两个液管压力调节膨胀阀141；气体流量调节装置24包括并联设置的至少两个气管压力调节膨胀阀241。优选地，液管压力调节膨胀阀141、气管压力调节膨胀阀242均为电子膨胀阀。通过调节液管压力调节膨胀阀141和气管压力调节膨胀阀242的开度，即可控制液态/气态冷媒的流量，也即改变液态/气态冷媒通过液管压力调节膨胀阀141或气管压力调节膨胀阀242的压力损失。In a preferred embodiment, the liquid flow regulating device 14 includes at least two liquid pipe pressure regulating expansion valves 141 arranged in parallel; the gas flow regulating device 24 includes at least two gas pipe pressure regulating expansion valves 241 arranged in parallel. Preferably, both the liquid pipe pressure regulating expansion valve 141 and the gas pipe pressure regulating expansion valve 242 are electronic expansion valves. By adjusting the opening of the liquid pipe pressure regulating expansion valve 141 and the gas pipe pressure regulating expansion valve 242, the flow rate of the liquid/gas refrigerant can be controlled, that is, the liquid/gas refrigerant can be expanded through the liquid pipe pressure regulating expansion valve 141 or the gas pipe pressure regulating expansion Pressure loss from valve 242.
综上所述，本发明利用压力调节模拟装置来模拟多联机系统中冷媒的压力损失，不需要再利用实体设备模拟高落差、长配管的环境，从而极大地减轻了多联机系统在新产品开发阶段的巨大投入，省时省力，节约成本。并且，本发明的压力调节模拟装置结构简单，根据两个压力传感器的压力差，结合表1中的压力损失对照表控制流量调节阀的开度，控制冷媒的流量以达到期望的压力损失值，操作便捷。To sum up, the present invention uses the pressure regulation simulation device to simulate the pressure loss of the refrigerant in the multi-line system, and does not need to use physical equipment to simulate the environment of high drop and long piping, thereby greatly reducing the pressure of the multi-line system on new product development. The huge investment in the stage saves time, effort and cost. Moreover, the pressure regulation simulation device of the present invention has a simple structure. According to the pressure difference between the two pressure sensors, combined with the pressure loss comparison table in Table 1, the opening of the flow regulating valve is controlled, and the flow of the refrigerant is controlled to achieve the desired pressure loss value. Easy to operate.
本发明还提供了一种压力调节模拟装置的操作方法，参照图4，图4是本发明的压力调节模拟装置的操作方法的流程图。如图4所示，本发明的操作方法包括：S110、获取第一压力传感器的第一压力值以及第二压力传感器的第二压力值；S120、计算第一压力值与第二压力值的差值；S130、根据差值调节流量调节装置的开度。The present invention also provides an operation method of the pressure regulation simulation device. Referring to FIG. 4 , FIG. 4 is a flow chart of the operation method of the pressure regulation simulation device of the present invention. As shown in Figure 4, the operating method of the present invention includes: S110, acquiring the first pressure value of the first pressure sensor and the second pressure value of the second pressure sensor; S120, calculating the difference between the first pressure value and the second pressure value value; S130, adjusting the opening of the flow regulating device according to the difference.
在步骤S130中，首先根据预设的压力损失对照表获取期望的压力损失值；然后将该差值与期望的压力损失值进行比较；根据比较结果调节流量调节装置的开度。其中，预设的压力损失对照表为多联机空调系统中的冷媒压力损失与联机管径、长度的映射关系表。具体的调节计算方法可参考上文，在此不再赘述。In step S130, first obtain the expected pressure loss value according to the preset pressure loss comparison table; then compare the difference with the expected pressure loss value; adjust the opening degree of the flow regulating device according to the comparison result. Wherein, the preset pressure loss comparison table is a mapping relationship table between refrigerant pressure loss and the diameter and length of the connected pipes in the multi-connected air-conditioning system. For the specific adjustment calculation method, reference may be made to the above, which will not be repeated here.
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。So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.
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