Air conditioning system
By designing an air adjustment system that simplifies the pipeline and reduce the number of valves, the problem of complex structure and high production costs of the existing four -control air -conditioning unit has been solved, and the effect of reducing costs and improving efficiency is achieved.
Patent Information
- Application Number
- CN202310923964.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-25
- Publication Date
- 2025-01-28
AI Technical Summary
The existing four-controlled air conditioner unit has a complex structure and many valve parts, which leads to high production costs, which is not conducive to popularization and promotion.
A air -regulating system is designed to simplify the number of pipeline design and reduce the number of valves, and use compressor, four -way valve, multiple heat exchangers, throwing components, storage device, solenoid valve and stop valve to achieve Refrigeration, heating and defrosting mode.
The purpose of reducing production costs and operating costs, at the same time simplified the design of the pipeline, reduced the number of valves, and improved the efficiency and reliability of the system.
Smart Images
Figure CN119374219A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of air conditioning, and more particularly to an air conditioning system. Background Art
[0002] With the diversification of building functions, more and more zoning designs have created the need for both cooling and heating in the same building. Four-pipe air conditioning units can effectively meet the needs of such applications and save operating costs and equipment investment. However, most of the four-pipe units currently in use have complex structures and many valves and other parts, making their production costs high and not conducive to popularization and promotion. Summary of the invention
[0003] The present invention aims to provide an air conditioning system to at least partially solve or alleviate the problems existing in the prior art.
[0004] To achieve at least one purpose of the present invention, according to one aspect of the present invention, an air conditioning system is provided, the air conditioning system comprising a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first throttling element and a second throttling element with a cut-off function, a liquid reservoir, a first solenoid valve, a second solenoid valve and a check valve connected by pipelines.
[0005] wherein the four-way valve has a first port for communicating with the exhaust port of the compressor, a second port for communicating with the first end of the first heat exchanger, a third port for communicating with the first end of the second heat exchanger, and a fourth port for communicating with the second end of the third heat exchanger;
[0006] Wherein, the second end of the first heat exchanger is connected to the first end of the reservoir via the second solenoid valve, and the second end of the first heat exchanger is connected to the first end of the reservoir via the check valve; the second end of the second heat exchanger is connected to the second end of the reservoir via the second throttling element; the first end of the third heat exchanger is connected to the first end of the reservoir via the first solenoid valve, and the first end of the third heat exchanger is connected to the second end of the reservoir via the first throttling element, and the second end of the third heat exchanger is connected to the suction port of the compressor.
[0007] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system also includes an economizer component, which is arranged between the second throttling element and the second end of the liquid reservoir, and includes an intermediate heat exchanger and a throttling bypass for throttling at least a portion of the refrigerant, and the throttling bypass is provided with a throttling device, wherein the intermediate heat exchanger is connected to the air supply port of the compressor.
[0008] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system also includes a controller that communicates with the first solenoid valve, the second solenoid valve, the first throttling element, the second throttling element, or any combination thereof.
[0009] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system has a cooling mode, wherein the controller commands the opening of the first solenoid valve, the second throttling element, the first port and the third port of the four-way valve, and the closing of the first throttling element, the second solenoid valve, the second port and the fourth port of the four-way valve to allow the second throttling element to play a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the four-way valve, the third port of the four-way valve, the second heat exchanger, the second throttling element, the economizer assembly, the liquid reservoir, the first solenoid valve, the third heat exchanger and the suction port of the compressor in sequence.
[0010] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system has a heating mode, wherein the controller commands the opening of the second throttling element and commands the connection between the first port and the second port of the four-way valve and the connection between the third port and the fourth port of the four-way valve, and closes the first throttling element, the first solenoid valve and the second solenoid valve to allow the second throttling element to play a throttling role, so that the refrigerant of the air conditioning system flows in sequence through the exhaust port of the compressor, the first port of the four-way valve, the second port of the four-way valve, the first heat exchanger, the check valve, the liquid reservoir, the economizer assembly, the second throttling element, the second heat exchanger, the third port of the four-way valve, the fourth port of the four-way valve and the suction port of the compressor.
[0011] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system has a defrost mode, wherein the controller commands the opening of the second throttling element and the second solenoid valve and commands the first port and the third port of the four-way valve to be connected and the second port and the fourth port of the four-way valve to be connected, closes the first throttling element and the first solenoid valve to allow the second throttling element to play a throttling role, so that the refrigerant of the air conditioning system flows in sequence through the exhaust port of the compressor, the first port of the four-way valve, the third port of the four-way valve, the second heat exchanger, the second throttling element, the economizer assembly, the liquid reservoir, the second solenoid valve, the first heat exchanger, the second port of the four-way valve, the fourth port of the four-way valve and the suction port of the compressor.
[0012] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system has a cooling and heat recovery mode, wherein the controller commands the opening of the first throttling element, the first port and the second port of the four-way valve, and the closing of the second throttling element, the first solenoid valve, the second solenoid valve, the third port and the fourth port of the four-way valve so that the first throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the four-way valve, the second port of the four-way valve, the first heat exchanger, the check valve, the liquid reservoir, the first throttling element, the third heat exchanger and the suction port of the compressor in sequence.
[0013] In addition to or as an alternative to one or more of the above features, in further embodiments, the compressor is a jet enthalpy increase compressor.
[0014] In addition to one or more of the above features, or as an alternative, in another embodiment, the air conditioning system further includes a gas-liquid separator, which is arranged between the suction port of the compressor and the second end of the third heat exchanger.
[0015] In addition to one or more of the above features, or as an alternative, in another embodiment, the second heat exchanger is a fan coil heat exchanger.
[0016] It can be understood that the air conditioning system according to the present invention can not only simplify the pipeline design, but also reduce the number of valves, thereby further achieving the purpose of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In addition, similar numbers in the figures are used to represent similar components, among which:
[0018] Figure 1 A schematic diagram showing the structure of an embodiment of an air conditioning system according to the present invention in a cooling mode and a defrosting mode; and
[0019] Figure 2 A schematic structural diagram of an embodiment of an air conditioning system according to the present invention in a heating mode and a cooling and heat recovery mode is shown. DETAILED DESCRIPTION
[0020] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present invention can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present invention more complete and similar, and to fully convey the concept of the present invention to those skilled in the art.
[0021] See also Figure 1, which presents an embodiment of an air conditioning system. The air conditioning system 100 is composed of a first heat exchanger 101, a second heat exchanger 102, a third heat exchanger 103, a four-way valve 104, a compressor 105, a first throttling element 106 and a second throttling element 107 with a cut-off function, a liquid storage tank 108, a first solenoid valve 109, a second solenoid valve 110, and a check valve 111. In practical applications, the first heat exchanger 101 can be a condenser and the third heat exchanger 103 can be an evaporator, wherein both the first heat exchanger 101 and the third heat exchanger 103 are water-side heat exchangers, which are provided with a water heat exchange structure inside, and can exchange heat with a refrigerant or a refrigerant to obtain corresponding cold water or hot water. In addition, the second heat exchanger 102 can be a fan coil heat exchanger, which is provided with one or more parallel fans, and at least one of them can be a variable frequency fan or a two-speed fan, so as to enhance the heat exchange capacity and effect of the second heat exchanger 102. The accumulator 108 is used to store the excess refrigerant or coolant that does not participate in the circulation in the air conditioning system 100. Specifically, the four-way valve 104 has a first port 104a for communicating with the exhaust port 105a of the compressor 105, a second port 104b for communicating with the first end of the first heat exchanger 101, a third port 104c for communicating with the first end of the second heat exchanger 102, and a fourth port 104d for communicating with the second end of the third heat exchanger 103. In addition, the second end of the first heat exchanger 101 is connected to the first end of the accumulator 108 via the second solenoid valve 110, and the second end of the first heat exchanger 101 is connected to the first end of the accumulator 108 via the check valve 111. The second end of the second heat exchanger 102 is connected to the second end of the accumulator 108 via the second throttling element 107. The first end of the third heat exchanger 103 is connected to the first end of the liquid reservoir 108 via the first solenoid valve 109, and the first end of the third heat exchanger 103 is connected to the second end of the liquid reservoir 108 via the first throttling element 106, and the second end of the third heat exchanger 103 is connected to the air intake port 105b of the compressor 105. The air conditioning system according to the present invention can simplify the pipeline design and reduce the number of valves, thereby achieving the purpose of reducing costs and increasing efficiency.
[0022] It should be known that both the first throttling element 106 and the second throttling element 107 can play the role of throttling expansion, but one of them can also be completely closed, and the other one can be adjusted to play the role of throttling expansion.
[0023] In other optional embodiments in combination with the above embodiments, the air conditioning system 100 further includes an economizer assembly 120, which is disposed between the second throttling element 107 and the second end of the liquid accumulator 108, and includes an intermediate heat exchanger 121 and a throttling bypass for throttling at least a portion of the refrigerant, wherein the throttling bypass is provided with a filter 122 and a throttling device 123, wherein the intermediate heat exchanger 121 is connected to the air supply port of the compressor 105. In this case, the compressor 105 can adopt an injection enthalpy increase compressor, thereby improving the overall operating range of the air conditioning system 100.
[0024] The following will introduce various possible modifications of the air conditioning system in conjunction with the accompanying drawings. In addition, in order to further improve the energy efficiency or reliability of the system, some additional parts can be added, which are also exemplarily described below. For example, the air conditioning system 100 further includes a controller (not shown), which communicates with the first solenoid valve 109, the second solenoid valve 110, the first throttling element 106, the second throttling element 107 or any combination thereof. For another example, the air conditioning system 100 also includes a gas-liquid separator 112, which is arranged between the air intake port 105b of the compressor 105 and the second end of the third heat exchanger 103, so as to ensure that the compressor 105 is not liquid-carrying during operation. For another example, the air conditioning system 100 can be provided with a first filter device 113, a second filter device 114 and a third filter device 115 on each pipeline of the air conditioning system 100, so as to filter out oil droplets or other impurities entrained by the refrigerant in the circulation system.
[0025] The air conditioning system 100 can realize the cooling mode. Figure 1 To give an exemplary illustration.
[0026] Continue to see Figure 1 Specifically, when the cooling mode is executed, the controller commands to open the first solenoid valve 109, the second throttling element 107, the first port 104a and the third port 104c of the four-way valve 104, and close the first throttling element 106, the second solenoid valve 110, the second port 104b and the fourth port 104d of the four-way valve 104 to make the second throttling element 107 play a throttling role.
[0027] The refrigerant of the air conditioning system 100 first enters the compressor 105 to achieve gas phase compression, and then flows from the exhaust port 105a of the compressor 105 through the first port 104a of the four-way valve 104 and the third port 104c of the four-way valve 104 to the second heat exchanger 102 for condensation and heat dissipation. The refrigerant then flows into the economizer assembly 120 through the second throttling element 107 and can enter the economizer assembly 120 after throttling expansion occurs in the second throttling element 107. At least a portion of the refrigerant is diverted from the main path of the economizer assembly 120 into the throttling bypass, flows through the filter 122 and the throttling device 123 in sequence, and can enter the intermediate heat exchanger 121 after throttling expansion occurs in the throttling device 123 to exchange heat with the refrigerant on the main path of the economizer assembly 120 and then enter the intermediate stage of the compressor 105, so as to replenish the compressor 105. When the remaining refrigerant flows out of the main circuit of the economizer assembly 120, it enters the accumulator 108, and then flows into the third heat exchanger 103 through the first solenoid valve 109 to evaporate and absorb heat. After passing through the third heat exchanger 103, the refrigerant returns to the suction port 105b of the compressor 105, thus completing the cycle.
[0028] For example, the air conditioning system 100 can also realize a heating mode. Figure 2 To give an exemplary illustration.
[0029] Continue to see Figure 2 Specifically, when the heating mode is executed, the controller commands the opening of the second throttling element 107 and commands the connection of the first port 104a and the second port 104b of the four-way valve 104 and the connection of the third port 104c and the fourth port 104d of the four-way valve 104, and closes the first throttling element 106, the first solenoid valve 109 and the second solenoid valve 110 to make the second throttling element 107 play a throttling role.
[0030] The refrigerant of the air conditioning system 100 first enters the compressor 105 to be compressed in the gas phase, and then flows from the exhaust port 105a of the compressor 105 through the first port 104a of the four-way valve 104 and the second port 104b of the four-way valve 104 to the first heat exchanger 101 for condensation and heat dissipation. The refrigerant then passes through the check valve 111 and enters the accumulator 108, and flows from the accumulator 108 into the economizer assembly 120. At least a portion of the refrigerant is diverted from the main circuit of the economizer assembly 120 into the throttling bypass, flows through the filter 122 and the throttling device 123 in sequence, and can enter the intermediate heat exchanger 121 after throttling expansion in the throttling device 123 to exchange heat with the refrigerant on the main circuit of the economizer assembly 120, and then enter the intermediate stage of the compressor 105, so as to replenish the compressor 105. When the remaining refrigerant flows out of the main circuit of the economizer assembly 120, it flows into the second heat exchanger 102 through the second throttling element 107 and enters the second heat exchanger 102 to evaporate and absorb heat after throttling expansion occurs in the second throttling element 107. After passing through the second heat exchanger 102, the refrigerant returns to the suction port 105b of the compressor 105 through the third port 104c of the four-way valve 104 and the fourth port 104d of the four-way valve 104, thereby completing the cycle.
[0031] For example, the air conditioning system 100 can also implement a defrost mode. Figure 1 To give an exemplary illustration.
[0032] Continue to see Figure 1 Specifically, when the defrost mode is executed, the controller commands the opening of the second throttling element 107 and the second solenoid valve 110 and commands the connection of the first port 104a and the third port 104c of the four-way valve 104 and the connection of the second port 104b and the fourth port 104d of the four-way valve 104, and closes the first throttling element 106 and the first solenoid valve 109 to allow the second throttling element 107 to play a throttling role.
[0033] The refrigerant of the air conditioning system 100 first enters the compressor 105 to achieve gas phase compression, and then flows from the exhaust port 105a of the compressor 105 through the first port 104a of the four-way valve 104 and the third port 104c of the four-way valve 104 to the second heat exchanger 102 for condensation and heat dissipation. The refrigerant then flows into the economizer assembly 120 through the second throttling element 107 and can enter the economizer assembly 120 after throttling expansion occurs in the second throttling element 107. At least a portion of the refrigerant is diverted from the main path of the economizer assembly 120 into the throttling bypass, flows through the filter 122 and the throttling device 123 in sequence, and can enter the intermediate heat exchanger 121 after throttling expansion occurs in the throttling device 123 to exchange heat with the refrigerant on the main path of the economizer assembly 120 and then enter the intermediate stage of the compressor 105, so as to replenish the compressor 105. When the remaining refrigerant flows out of the main circuit of the economizer assembly 120, it enters the accumulator 108, and then flows into the first heat exchanger 101 through the second solenoid valve 110 to evaporate and absorb heat. After passing through the first heat exchanger 101, the refrigerant returns to the suction port 105b of the compressor 105 through the second port 104b of the four-way valve 104 and the fourth port 104d of the four-way valve 104, thereby completing the cycle.
[0034] For example, the air conditioning system 100 can also realize cooling and heat recovery modes. Figure 2 To give an exemplary illustration.
[0035] Continue to see Figure 2 Specifically, when the cooling and heat recovery modes are executed, the controller commands to open the first throttling element 106, the first port 104a and the second port 104b of the four-way valve 104, and to close the second throttling element 107, the first solenoid valve 109, the second solenoid valve 110, the third port 104b of the four-way valve 104, and the third port 104b of the four-way valve 104. c and the fourth port 104d so that the first throttling element 106 plays a throttling role.
[0036] The refrigerant of the air conditioning system 100 first enters the compressor 105 to achieve gas phase compression, and then flows from the exhaust port 105a of the compressor 105 through the first port 104a of the four-way valve 104 and the second port 104b of the four-way valve 104 into the first heat exchanger 101 for condensation and heat dissipation. Then the refrigerant passes through the check valve 111 and enters the accumulator 108. After the refrigerant flows out of the accumulator 108, it passes through the first throttling element 106 and flows into the third heat exchanger 103, and can enter the third heat exchanger 103 to evaporate and absorb heat after throttling expansion occurs in the first throttling element 106. After passing through the third heat exchanger 103, the refrigerant returns to the air intake port 105b of the compressor 105, thereby completing the cycle. In this case, the second heat exchanger 102 is in an idle state, and the first heat exchanger 101 can recover heat from the refrigerant or the refrigerant to obtain corresponding hot water.
[0037] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0038] In the present invention, unless otherwise clearly defined and specified, the terms "connection", "communication" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0039] The above examples mainly illustrate the air conditioning system of the present invention. Although only some of the embodiments of the present invention are described, it should be understood by those skilled in the art that the present invention can be implemented in many other forms without departing from its purpose and scope. Therefore, the examples and embodiments shown are considered to be illustrative rather than restrictive, and the present invention may cover various modifications and substitutions without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims
1. An air conditioning system, characterized in that: The air conditioning system includes a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first throttling element and a second throttling element with a cut-off function, a liquid reservoir, a first solenoid valve, a second solenoid valve and a check valve connected by pipelines. wherein the four-way valve has a first port for communicating with the exhaust port of the compressor, a second port for communicating with the first end of the first heat exchanger, a third port for communicating with the first end of the second heat exchanger, and a fourth port for communicating with the second end of the third heat exchanger; Wherein, the second end of the first heat exchanger is connected to the first end of the reservoir via the second solenoid valve, and the second end of the first heat exchanger is connected to the first end of the reservoir via the check valve; the second end of the second heat exchanger is connected to the second end of the reservoir via the second throttling element; the first end of the third heat exchanger is connected to the first end of the reservoir via the first solenoid valve, and the first end of the third heat exchanger is connected to the second end of the reservoir via the first throttling element, and the second end of the third heat exchanger is connected to the suction port of the compressor.
2. The air conditioning system according to claim 1, characterized in that: The air conditioning system also includes an economizer component, which is arranged between the second throttling element and the second end of the liquid accumulator, and includes an intermediate heat exchanger and a throttling bypass for throttling at least a portion of the refrigerant, and the throttling bypass is provided with a throttling device, wherein the intermediate heat exchanger is connected to the air supply port of the compressor.
3. The air conditioning system according to claim 2, characterized in that: The air conditioning system further includes a controller in communication with the first solenoid valve, the second solenoid valve, the first throttle element, the second throttle element, or any combination thereof.
4. The air conditioning system according to claim 3, characterized in that: The air conditioning system has a cooling mode, wherein the controller commands the opening of the first solenoid valve, the second throttling element, the first port and the third port of the four-way valve, and the closing of the first throttling element, the second solenoid valve, the second port and the fourth port of the four-way valve so that the second throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the four-way valve, the third port of the four-way valve, the second heat exchanger, the second throttling element, the economizer assembly, the liquid accumulator, the first solenoid valve, the third heat exchanger and the suction port of the compressor in sequence.
5. The air conditioning system according to claim 3, characterized in that: The air conditioning system has a heating mode, wherein the controller commands the opening of the second throttling element and commands the connection between the first port and the second port of the four-way valve and the connection between the third port and the fourth port of the four-way valve, and closes the first throttling element, the first solenoid valve and the second solenoid valve to allow the second throttling element to play a throttling role, so that the refrigerant of the air conditioning system flows sequentially through the exhaust port of the compressor, the first port of the four-way valve, the second port of the four-way valve, the first heat exchanger, the check valve, the accumulator, the economizer assembly, the second throttling element, the second heat exchanger, the third port of the four-way valve, the fourth port of the four-way valve and the suction port of the compressor.
6. The air conditioning system according to claim 3, characterized in that: The air conditioning system has a defrost mode, wherein the controller commands the opening of the second throttling element and the second solenoid valve and commands the connection of the first port and the third port of the four-way valve and the connection of the second port and the fourth port of the four-way valve, closes the first throttling element and the first solenoid valve and allows the second throttling element to play a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the four-way valve, the third port of the four-way valve, the second heat exchanger, the second throttling element, the economizer assembly, the liquid reservoir, the second solenoid valve, the first heat exchanger, the second port of the four-way valve, the fourth port of the four-way valve and the suction port of the compressor in sequence.
7. The air conditioning system according to claim 3, characterized in that: The air conditioning system has a cooling and heat recovery mode, wherein the controller commands the opening of the first throttling element, the first port and the second port of the four-way valve, and the closing of the second throttling element, the first solenoid valve, the second solenoid valve, the third port and the fourth port of the four-way valve so that the first throttling element plays a throttling role, so that the refrigerant of the air conditioning system flows through the exhaust port of the compressor, the first port of the four-way valve, the second port of the four-way valve, the first heat exchanger, the check valve, the accumulator, the first throttling element, the third heat exchanger and the suction port of the compressor in sequence.
8. The air conditioning system according to claim 2 or 3, characterized in that: The compressor is a jet enthalpy increase compressor.
9. The air conditioning system according to claim 2 or 3, characterized in that: The air conditioning system further includes a gas-liquid separator, which is disposed between the air intake port of the compressor and the second end of the third heat exchanger.
10. The air conditioning system according to claim 2 or 3, characterized in that: The second heat exchanger is a fan coil heat exchanger.