Air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, in particular to an air conditioning system, and aims to solve the technical problems that an electronic expansion valve is large in specification and low in adjusting speed when the cold flow of an existing air conditioning system is large. In order to achieve the purpose, the air conditioning system comprises a condenser, a first throttling assembly and an evaporator which are arranged in sequence. The first throttling assembly comprises a first throttling element and a second throttling element which are arranged in parallel, and the first throttling element comprises a pore plate; the second throttling element comprises an electric ball valve, an electromagnetic valve or an electronic expansion valve. Wherein the flow of the orifice plate is non-adjustable and has certain basic flow, and the flow can be quickly adjusted to a required value only by adjusting the flow through the second throttling element; the use experience of the user is enhanced; due to the fact that the orifice plate with the basic flow is arranged, the refrigerant is shunted, the specification needed by the second throttling element is small, and the requirement for flow adjustment can be met; the cost of the air-conditioning system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and specifically provides an air conditioning system. Background Art

[0002] Since electronic expansion valves are easy to control and sensitive, the conventional throttling structure of current air conditioning systems is throttling by electronic expansion valves. However, when the refrigerant flow rate is large, there may be a phenomenon that the refrigerant flow rate of the electronic expansion valve is insufficient, and a larger specification of the electronic expansion valve is required to solve the problem. In addition, some air conditioning systems have a relatively large required basic flow rate, that is, no adjustment is required within the basic flow rate range; especially for air conditioning systems with air suspension compressors, the refrigerant required for the operation of the compressor is a fixed amount, and the amount of refrigerant flowing during the operation of the air conditioning system cannot be lower than the fixed value required by the compressor.

[0003] However, the electronic expansion valve is a full-flow adjustment, that is, an adjustment from zero to the maximum value; the adjustment to the appropriate flow rate is relatively slow.

[0004] Therefore, there is an urgent need for an air conditioning system to solve the above technical problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the technical problems that when the cold flow rate of the existing air conditioning system is large, the specification of the electronic expansion valve is large and the adjustment speed is slow.

[0006] In a first aspect, the utility model provides an air conditioning system, which includes a condenser, a first throttling assembly, and an evaporator arranged in sequence; the first throttling assembly includes a first throttling element and a second throttling element arranged in parallel, and by adjusting the first throttling element and the second throttling element, the flow rate distribution of the branch corresponding to the first throttling element and the branch corresponding to the second throttling element is realized.

[0007] In a specific embodiment of the above air conditioning system, the first throttling element includes an orifice plate.

[0008] In a specific embodiment of the above air conditioning system, the second throttling element includes an electric ball valve, a solenoid valve, or an electronic expansion valve.

[0009] In a specific embodiment of the above air conditioning system, the compressor is an air suspension compressor.

[0010] In a specific embodiment of the above air conditioning system, the air conditioning system further includes a flash evaporation device, the flash evaporation device is arranged between the first throttling assembly and the evaporator, and the air inlet of the compressor is connected to the flash evaporation device.

[0011] In the specific implementation manner of the above air conditioning system, a one-way valve is provided between the flash evaporation device and the compressor, and the one-way valve is configured to only allow the refrigerant to flow from the flash evaporation device to the compressor.

[0012] In the specific implementation manner of the above air conditioning system, the air conditioning system further includes a second throttling assembly, which is arranged between the flash evaporation device and the evaporator, and the second throttling assembly is used to adjust the refrigerant flow rate between the flash evaporation device and the evaporator.

[0013] In the specific implementation manner of the above air conditioning system, the second throttling assembly includes the first throttling element.

[0014] In the specific implementation manner of the above air conditioning system, the second throttling assembly includes the first throttling element and the second throttling element arranged in parallel.

[0015] In the specific implementation manner of the above air conditioning system, the angle of the first throttling element is adjustable; and / or

[0016] the angle of the second throttling element is adjustable.

[0017] In the case of adopting the above technical solution, the air conditioning system of the present invention includes a condenser, a first throttling assembly and an evaporator arranged in sequence; the first throttling assembly includes a first throttling element and a second throttling element arranged in parallel. By adjusting the first throttling element and the second throttling element, the flow rate distribution of the branch corresponding to the first throttling element and the branch corresponding to the second throttling element can be realized. The first throttling element includes an orifice plate; the second throttling element includes an electric ball valve, a solenoid valve or an electronic expansion valve. Among them, the flow rate of the orifice plate is not adjustable and has a certain basic flow rate. Only by adjusting the flow rate through the second throttling element, the flow rate can be quickly adjusted to the required value; the user experience is enhanced. Moreover, since an orifice plate with a basic flow rate is equipped, that is, the refrigerant is branched, the specification of the second throttling element required is smaller, and the requirement of flow rate adjustment can be met; the manufacturing cost of the air conditioning system is reduced.

[0018] In addition, the cost of the orifice plate is low, which can further reduce the manufacturing cost of the air conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0020] Figure 1 is a schematic structural diagram of the air conditioning system provided in Embodiment 1 of the present invention;

[0021] Figure 2 is a schematic structural diagram of the air conditioning system provided in Embodiment 2 of the present invention.

[0022] List of reference numerals:

[0023] 1. Condenser; 2. First throttling assembly; 21. First throttling element; 22. Second throttling element; 3. Evaporator; 4. Compressor; 5. Flash device; 6. Second throttling assembly. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art 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.

[0025] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In order to solve the technical problem that the electronic expansion valve has large specifications and slow adjustment speed when the cold flow rate of the existing air conditioning system is large, this embodiment discloses an air conditioning system, and the air conditioning system will be described in detail with two embodiments below.

[0028] Embodiment 1

[0029] like Figure 1 As shown, the air conditioning system comprises a compressor 4, a condenser 1, an evaporator 3 and a first throttling assembly 2. The compressor 4, the condenser 1, the first throttling assembly 2 and the evaporator 3 are connected and arranged in sequence.

[0030] The exhaust port of the compressor 4 is connected to the first side of the condenser 1 through a first pipeline, and the high-temperature and high-pressure refrigerant flowing out of the compressor 4 flows to the condenser 1 to be condensed and becomes liquid refrigerant.

[0031] The second side of the condenser 1 communicates with the first side of the evaporator 3 through a second pipeline; a first throttling assembly 2 is arranged on the second pipeline. The second side of the evaporator 3 is connected to the suction port of the compressor 4 through a third pipeline. The liquid refrigerant flows towards the evaporator 3 after passing through the first throttling assembly 2, and flows back to the compressor 4 through the third pipeline after evaporating in the evaporator 3.

[0032] The first throttling assembly 2 is used to control the amount of refrigerant flowing to the evaporator 3. Among them, the first throttling assembly 2 includes a first throttling element 21 and a second throttling element 22 arranged in parallel. The first throttling element 21 is arranged on the first branch, and the second throttling element 22 is arranged on the second branch.

[0033] By adjusting the first throttling element 21 and the second throttling element 22, the flow rate distribution of the branch corresponding to the first throttling element 21 and the branch corresponding to the second throttling element 22 is realized.

[0034] Among them, the first throttling element 21 includes a housing and an orifice plate, and the orifice plate is arranged in the chamber of the housing; the number of orifice plates can specifically be one, and it is arranged perpendicular to the flow direction of the refrigerant.

[0035] Regarding the number of orifice plates, it should be noted that although there is one orifice plate in this embodiment, this is not a limitation of the present utility model. Without departing from the principle of the present utility model, in other embodiments, those skilled in the art can select the number of orifice plates to be multiple, and the multiple orifice plates are arranged at intervals. In order to better achieve interception, the flow holes between the multiple orifice plates can be arranged in a staggered manner, which can all play a throttling role. These do not deviate from the basic principle of the present utility model and will fall within the protection scope of the present utility model.

[0036] The angle of the first throttling element 21 is adjustable, which specifically means that during the installation process, its direction can be adjusted according to the throttling parameters of the air-conditioning system and fixed after adjustment, so that the refrigerant flowing through the first throttling element 21 always flows in the set direction. Specifically, fixing parts can be arranged on the housing or the first branch at both ends of the housing to realize the adjustment and fixation of the direction of the first throttling element 21.

[0037] The second throttling element 22 includes an electric ball valve. Since the orifice plate cannot adjust the flow rate, the flow rate of the second branch can be adjusted through the electric ball valve, and then the flow rate of the refrigerant flowing from the condenser 1 to the evaporator 3 can be adjusted; to achieve throttling of the condenser 1.

[0038] Regarding the second throttling element 22, it should be noted that although the second throttling element 22 in this embodiment is specifically an electric ball valve, this is not a limitation to the present utility model. On the premise of not deviating from the principle of the present utility model, in other embodiments, the second throttling element 22 can specifically also be a solenoid valve or an electronic expansion valve, both of which can play a role in regulating the flow rate of the second branch, and neither of them deviates from the basic principle of the present utility model and will fall within the protection scope of the present utility model.

[0039] The angle of the second throttling element 22 is adjustable; specifically, it refers to the adjustable angle when the second throttling element 22 is installed, which is specifically determined according to the parameter configuration of the air-conditioning system and the flow rate adjustment requirements. After determination, a fixing sleeve or the like is used for fixing to prevent the direction of the second throttling element 22 from changing randomly.

[0040] After the air-conditioning system is started, the compressor 4 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant and transports the refrigerant to the condenser 1; after condensation in the condenser 1, it flows to the evaporator 3 after throttling adjustment by the first throttling assembly 2. After evaporation of the gaseous refrigerant in the evaporator 3, the gaseous refrigerant flows back to the compressor 4 for compression again.

[0041] Embodiment 2

[0042] As Figure 2 shown, the air-conditioning system includes a compressor 4, a condenser 1, a flash evaporation device 5, an evaporator 3, a first throttling assembly 2 and a second throttling assembly 6. Among them, the compressor 4 is an air suspension compressor 4; the compressor 4, the condenser 1, the first throttling assembly 2, the flash evaporation device 5, the second throttling assembly 6 and the evaporator 3 are connected and arranged in sequence.

[0043] The exhaust port of the compressor 4 is connected to the first side of the condenser 1 through a first pipeline. The high-temperature and high-pressure refrigerant flowing out of the compressor 4 flows to the condenser 1 for condensation and becomes a liquid refrigerant.

[0044] The second side of the condenser 1 is communicated with the first side of the flash evaporation device 5 through a second pipeline; the first throttling assembly 2 is arranged on the second pipeline. The second side of the flash evaporation device 5 is communicated with the first side of the evaporator 3 through a fourth pipeline, and the second throttling assembly 6 is arranged on the fourth pipeline. The second side of the evaporator 3 is connected to the suction port of the compressor 4 through a third pipeline. The liquid refrigerant flows to the evaporator 3 after passing through the first throttling assembly 2, the flash evaporation device 5 and the second throttling assembly 6, and flows back to the compressor 4 through the third pipeline after evaporation in the evaporator 3.

[0045] The first throttling assembly 2 is used to control the amount of refrigerant flowing to the flash evaporation device 5. Among them, the first throttling assembly 2 includes a first throttling element 21 and a second throttling element 22 arranged in parallel. Among them, the first throttling element 21 is arranged on the first branch, and the second throttling element 22 is arranged on the second branch.

[0046] By adjusting the first throttling element 21 and the second throttling element 22, the flow rate distribution of the branch corresponding to the first throttling element 21 and the branch corresponding to the second throttling element 22 is achieved.

[0047] Among them, the first throttling element 21 includes a housing and an orifice plate, and the orifice plate is arranged in the chamber of the housing; the number of orifice plates can specifically be one, and it is arranged perpendicular to the flow direction of the refrigerant.

[0048] Regarding the number of orifice plates, it should be noted that although there is one orifice plate in this embodiment, this is not a limitation of the present utility model. Without departing from the principle of the present utility model, in other embodiments, those skilled in the art can choose the number of orifice plates to be multiple, and the multiple orifice plates are arranged at intervals. In order to better achieve throttling, the flow holes between the multiple orifice plates can be arranged in a staggered manner, which can all play a role in throttling. These do not deviate from the basic principle of the present utility model and will fall within the protection scope of the present utility model.

[0049] The angle of the first throttling element 21 is adjustable. Specifically, during the installation process, its direction can be adjusted according to the throttling parameters of the air-conditioning system and fixed after adjustment, so that the refrigerant flowing through the first throttling element 21 always flows in the set direction. Specifically, fixing parts can be arranged on the housing or the first branch at both ends of the housing to achieve the adjustment and fixation of the direction of the first throttling element 21.

[0050] The second throttling element 22 includes an electric ball valve. Since the orifice plate cannot adjust the flow rate, the flow rate of the second branch can be adjusted through the electric ball valve, and then the flow rate from the condenser 1 to the flash evaporation device 5 can be adjusted; to achieve throttling of the condenser 1.

[0051] Regarding the second throttling element 22, it should be noted that although the second throttling element 22 is specifically an electric ball valve in this embodiment, this is not a limitation of the present utility model. Without departing from the principle of the present utility model, in other embodiments, the second throttling element 22 can specifically also be a solenoid valve or an electronic expansion valve, which can all play a role in adjusting the flow rate of the second branch. These do not deviate from the basic principle of the present utility model and will fall within the protection scope of the present utility model.

[0052] The angle of the second throttling element 22 is adjustable; specifically, it means that the installation angle of the second throttling element 22 is adjustable, which is specifically determined according to the parameter configuration of the air-conditioning system and the flow rate adjustment requirements, and fixed with a fixing sleeve or the like after determination, so that the direction of the second throttling element 22 cannot be changed randomly.

[0053] The gas replenishing port of the compressor 4 is connected to the flash evaporation device 5 through the fifth pipeline, wherein the gas replenishing port communicates with the machine cavity of the compressor 4. The flash evaporation device 5 is specifically a flash evaporation cylinder, which can mainly evaporate part of the refrigerant, separate it, and transport the gaseous refrigerant to the machine cavity of the compressor 4 through the fifth pipeline. The refrigerant input into the machine cavity of the compressor 4 can drive the air floating bearing to float, so that the air suspension compressor 4 can operate normally.

[0054] A one-way valve is arranged between the flash evaporation device 5 and the compressor 4. The one-way valve is configured to only allow the refrigerant to flow from the flash evaporation device 5 to the compressor 4; the one-way valve is specifically arranged on the fifth pipeline.

[0055] The second throttling component 6 is used to adjust the refrigerant flow rate between the flash evaporation device 5 and the evaporator 3. Specifically, in this embodiment, the second throttling component 6 only includes the first throttling element 21. That is, the refrigerant flow rate between the flash evaporation cylinder and the evaporator 3 is adjusted through the orifice plate.

[0056] Regarding the second throttling component 6, it should be noted that although in this embodiment, the second throttling component 6 only includes the first throttling element 21, this is not a limitation on the present utility model. On the premise of not deviating from the principle of the present utility model, in other embodiments, those skilled in the art can choose that the second throttling component 6 includes the first throttling element 21 and the second throttling element 22 arranged in parallel. The specific parameters of the first throttling element 21 of the second throttling component 6 can be the same as the specific parameters of the first throttling element 21 of the first throttling component 2, or can be determined according to the throttling parameters required for the fourth pipeline. The specific parameters of the second throttling element 22 of the second throttling component 6 can be the same as the specific parameters of the second throttling element 22 of the first throttling component 2, or can be determined according to the throttling parameters required for the fourth pipeline.

[0057] After the air-conditioning system is started, the compressor 4 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and transports the refrigerant to the condenser 1; after condensation in the condenser 1, it flows to the flash evaporation device 5 after passing through the first throttling component 2. Part of the refrigerant flows to the machine cavity of the compressor 4 after flashing in the flash evaporation device 5, provides refrigerant for the machine cavity, drives the air floating bearing of the compressor 4 to float, so that the compressor 4 operates normally. Another part of the refrigerant flows to the evaporator 3 after being adjusted by the second throttling component 6. After the gaseous refrigerant evaporates in the evaporator 3, the gaseous refrigerant flows back to the compressor 4 to be compressed again.

[0058] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. An air conditioning system, which comprises a condenser (1), a first throttling component (2) and an evaporator (3) arranged in sequence; characterized in that, The first throttling component (2) includes a first throttling element (21) and a second throttling element (22) arranged in parallel. By adjusting the first throttling element (21) and the second throttling element (22), the flow rate distribution of the branch corresponding to the first throttling element (21) and the branch corresponding to the second throttling element (22) is achieved.

2. The air-conditioning system according to claim 1, characterized in that, The first throttling element (21) includes an orifice plate.

3. The air conditioning system according to claim 1, characterized in that, The second throttling element (22) includes an electric ball valve, a solenoid valve or an electronic expansion valve.

4. The air conditioning system according to claim 1, characterized in that, It further includes a compressor (4), which is arranged between the condenser (1) and the evaporator (3); and / or The compressor (4) is an air suspension compressor (4).

5. The air-conditioning system according to claim 4, characterized in that, The air conditioning system further includes a flash evaporation device (5), the flash evaporation device (5) is arranged between the first throttling component (2) and the evaporator (3), and the gas replenishing port of the compressor (4) is connected to the flash evaporation device (5).

6. The air conditioning system according to claim 5, characterized in that, A check valve is arranged between the flash evaporation device (5) and the compressor (4), and the check valve is configured to only allow the refrigerant to flow from the flash evaporation device (5) to the compressor (4).

7. The air conditioning system according to claim 5, wherein The air conditioning system further includes a second throttling component (6), which is arranged between the flash evaporation device (5) and the evaporator (3), and the second throttling component (6) is used to adjust the refrigerant flow rate between the flash evaporation device (5) and the evaporator (3).

8. The air conditioning system according to claim 7, wherein The second throttling component (6) includes the first throttling element (21).

9. The air-conditioning system according to claim 7, wherein, The second throttling component (6) includes the first throttling element (21) and the second throttling element (22) arranged in parallel.

10. The air conditioning system according to any one of claims 1-9, characterized in that, The angle of the first throttling element (21) is adjustable; and / or The angle of the second throttling element (22) is adjustable.

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