Pressure-constant water supply device for closed air conditioning system
By combining the design of the pressurized water inlet line and the water replenishment line, the problem of water replenishment difficulty and water waste in closed air conditioning systems under low or high water pressure is solved, realizing efficient constant pressure water replenishment and pressure relief functions, and improving the system's operating efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIUHAN ELECTROMECHANICAL EQUIP CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-26
Smart Images
Figure CN224415445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to closed-loop air conditioning technology, and more particularly to a constant pressure water supply device for a closed-loop air conditioning system. Background Technology
[0002] Currently, when the system pressure of a closed-loop air conditioning system rises due to factors such as temperature, the pressure regulating device opens the overflow electric valve to release the refrigerant from the closed-loop system into the atmospheric pressure tank, so that the system pressure drops to the normal set value; when the system pressure of a closed-loop air conditioning system drops due to factors such as temperature, the pressure regulating device starts the pressure replenishment pump to replenish the refrigerant from the atmospheric pressure tank into the system to maintain the normal system pressure.
[0003] Patent document with application number "CN01822330.3" discloses a hermetic compressor for refrigeration systems such as refrigerators, display cases, or air conditioning systems, which effectively attenuates pressure pulsations in the compression chamber through an intake muffler. The muffler cover (20) has a simple planar shape, resulting in minimal deformation during molding, and achieves a fully sealed contact with the muffler body (19). Therefore, pressure pulsations are almost impossible to leak from the connection between the muffler body (19) and the muffler cover (20). Sufficient noise reduction is achieved, thus reducing noise more effectively.
[0004] The aforementioned patent documents, in conjunction with existing technology, reveal the following defects in existing constant pressure water supply devices for closed-loop air conditioning systems:
[0005] 1. When the water supply comes from a water tank or the water pressure is ≤1.3 bar, it will not be able to supply water to the air conditioning system normally, and there will be difficulties in supplying water at normal pressure.
[0006] 2. When the pressure in a closed air conditioning system is too high and needs to be released, the normal pressure regulating device will directly discharge the water in the air conditioning system into the water ditch, causing a large loss of system water and chemicals, and making it difficult to replenish water at normal pressure. Utility Model Content
[0007] In order to overcome the shortcomings of the existing technology, this utility model provides a constant pressure water supply device for closed air conditioning systems, which solves the problems of difficulty in water supply at normal pressure.
[0008] The first aspect of this utility model is to provide a constant pressure water replenishment device for a closed-loop air conditioning system. The device, used for replenishing water in a closed-loop air conditioning system, includes a water tank assembly, an NG tank, a vacuum tank, a pressurized water inlet line, and a water replenishment line. The pressurized water inlet line includes a water tank connecting pipe, a pressurization pump, a system pressure relief pipe, and a water inlet pipe. The water tank connecting pipe is connected to the water tank assembly and the pressurization pump, respectively. The pressurization pump is connected to the water inlet pipe, the system pressure relief pipe is connected to the water inlet pipe, and the water inlet pipe is connected to the NG tank. The water replenishment line includes an outlet pipe, a water replenishment pump, and a system pressure replenishment pipe. The outlet pipe is connected to the NG tank, the vacuum tank is connected to the water replenishment pump and the outlet pipe, respectively, and the system pressure replenishment pipe is connected to the water replenishment pump. When water replenishment is needed, the pressurization pump operates to pressurize the water in the water tank assembly and then flows it into the NG tank. The water replenishment pump operates to draw liquid from the NG tank into the system along the system pressure replenishment pipe for water replenishment.
[0009] In a first aspect of this utility model, as a preferred embodiment, the system pressure relief pipeline and the water inlet pipeline are provided with a switch valve for switching on and off with the system pressure relief pipeline.
[0010] In a preferred embodiment of the first aspect of this utility model, a sewage pipe is provided at the outer extension end of the water inlet pipe, and a switch valve is provided at the sewage pipe.
[0011] In a preferred embodiment of the first aspect of this utility model, a switch valve is provided at the water tank connecting pipe and the water inlet pipe.
[0012] In the first aspect of this utility model, as a preferred embodiment, a switch valve is provided at both the water outlet pipeline and the system pressure replenishment pipeline.
[0013] In a preferred embodiment of the first aspect of this utility model, the number of water replenishment pumps is 2-5.
[0014] In a preferred embodiment of the first aspect of this utility model, the number of water replenishment pumps is two.
[0015] In a first aspect of this utility model, as a preferred embodiment, the water tank assembly is rectangular.
[0016] In a preferred embodiment of the first aspect of this utility model, the pressurized water inlet line further includes an atmospheric pressure water inlet pipe, the two ends of which are respectively connected to the water inlet pipeline and an atmospheric pressure water source.
[0017] In a preferred embodiment of the first aspect of this utility model, a switch valve is provided at the connection between the atmospheric pressure water inlet pipe and the water inlet pipeline.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] The water tank connecting pipe is connected to the water tank assembly and the booster pump respectively. The booster pump is connected to the inlet pipe, the system pressure relief pipe is connected to the inlet pipe, and the inlet pipe is connected to the NG tank. The water replenishment line includes an outlet pipe, a water replenishment pump, and a system pressure replenishment pipe. The outlet pipe is connected to the NG tank, the vacuum tank is connected to the water replenishment pump and the outlet pipe respectively, and the system pressure replenishment pipe is connected to the water replenishment pump. When water replenishment is needed, the booster pump operates to pressurize the water in the water tank assembly and then flows into the NG tank. The water replenishment pump operates to draw liquid from the NG tank into the system along the system pressure replenishment pipe for water replenishment. This application uses a combination of a booster inlet water line, a water replenishment line, and a water tank assembly. This not only ensures the water supply source for the system using the booster pump and the water replenishment efficiency using the water replenishment pump, but also allows for the selective discharge or return of excessively pressurized liquid to the water tank assembly, combining two functions with high efficiency. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present utility model;
[0021] Figure 2 This is another perspective view of the present invention;
[0022] Figure 3 This is another perspective view of the present utility model.
[0023] In the diagram: 101, Water tank assembly; 102, NG tank; 103, Vacuum tank; 300, Control console; 100, Booster water inlet line; 10, Water tank connecting pipe; 20, Booster pump; 30, Normal pressure water inlet pipe; 40, System pressure relief pipe; 50, Water inlet pipe; 501, Sewage pipe; 200, Water replenishment line; 60, Water outlet pipe; 80, Water replenishment pump; 90, System pressure replenishment pipe. Detailed Implementation
[0024] The utility model will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.
[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.
[0028] like Figure 1-3As shown, a constant pressure water supply device for a closed-loop air conditioning system is used for water supply to the system. It includes a water tank assembly 101, an NG tank 102, a vacuum tank 103, a booster water inlet line 100, and a water supply line 200. The booster water inlet line 100 includes a water tank connecting pipe 10, a booster pump 20, a system pressure relief pipe 40, and a water inlet pipe 50. The water tank connecting pipe 10 is connected to the water tank assembly 101 and the booster pump 20, respectively. The booster pump 20 is connected to the water inlet pipe 50, and the system pressure relief pipe 40 is connected to the water inlet pipe 50. The water inlet pipe 50 is connected to the... The NG tank 102 is connected; the water replenishment line 200 includes a water outlet pipe 60, a water replenishment pump 80, and a system pressure replenishment pipe 90. The water outlet pipe 60 is connected to the NG tank 102, the vacuum tank 103 is connected to the water replenishment pump 80 and the water outlet pipe 60 respectively, and the system pressure replenishment pipe 90 is connected to the water replenishment pump 80. When water replenishment is required, the booster pump 20 operates to pressurize the water in the water tank assembly 101 and then flows into the NG tank 102. The water replenishment pump 80 operates to flow the liquid in the NG tank 102 into the system along the system pressure replenishment pipe 90 for water replenishment. This application employs a combination of a booster water inlet line 100, a water replenishment line 200, and a water tank assembly 101. This combination ensures the system's water supply source through the booster pump 20 and the water replenishment efficiency through the water replenishment pump 80. Additionally, it allows for the discharge or return of excessively pressurized liquid to the water tank assembly 101, thus combining two functions with high efficiency.
[0029] Specifically, when the system pressure is too high and the NG tank is already at full capacity, the excess system water enters the water tank through the inlet pipe 50 and the water tank connection pipe 10 to release pressure.
[0030] In a preferred embodiment of the first aspect of this utility model, the system pressure relief pipeline 40 and the water inlet pipeline 50 are provided with switching valves for connecting and disconnecting the system pressure relief pipeline, so as to facilitate the opening and closing of the pressure relief channel.
[0031] In a preferred embodiment of the first aspect of this utility model, the water inlet pipe 50 is provided with a sewage discharge pipe 501 along its outer extension end, and a switch valve is provided at the sewage discharge pipe 501 so that sewage can be discharged directly when it is necessary to discharge sewage directly.
[0032] In a preferred embodiment of the first aspect of this utility model, a switch valve is provided at the water tank connecting pipe 10 and the water inlet pipe 50. Switch valves are also provided at the water outlet pipe 60 and the system pressure replenishment pipe 90 for convenient control.
[0033] In a preferred embodiment of the first aspect of this utility model, the number of water replenishment pumps 80 is 2-5. Specifically, in this embodiment, the number of water replenishment pumps 80 is two.
[0034] In a preferred embodiment of the first aspect of this utility model, the water tank assembly 101 is rectangular. The pressurized water inlet line 100 further includes a normal pressure water inlet pipe 30, the two ends of which are connected to the water inlet pipeline 50 and a normal pressure water source, respectively. A switch valve is provided at the connection between the normal pressure water inlet pipe 30 and the water inlet pipeline 50.
[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A constant pressure water supply device for a closed-loop air conditioning system, used for water supply to the closed-loop air conditioning system, characterized in that, It includes a water tank assembly, an NG tank, a vacuum tank, a booster water inlet line, and a water replenishment line. The booster water inlet line includes a water tank connecting pipe, a booster pump, a system pressure relief pipe, and a water inlet pipe. The water tank connecting pipe is connected to the water tank assembly and the booster pump, respectively. The booster pump is connected to the water inlet pipe, the system pressure relief pipe is connected to the water inlet pipe, and the water inlet pipe is connected to the NG tank. The water replenishment line includes an outlet pipe, a water replenishment pump, and a system pressure replenishment pipe. The outlet pipe is connected to the NG tank, the vacuum tank is connected to the water replenishment pump and the outlet pipe, and the system pressure replenishment pipe is connected to the water replenishment pump. When water needs to be replenished, the booster pump operates to pressurize the water in the water tank assembly and then flows into the NG tank. The replenishment pump operates to draw the liquid from the NG tank into the system along the system pressurization pipeline to replenish the water.
2. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 1, characterized in that: The system pressure relief pipeline and the water inlet pipeline are equipped with switching valves for connecting and disconnecting the system pressure relief pipeline.
3. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 2, characterized in that: A sewage pipe is provided at the outer extension end of the water inlet pipe, and a switch valve is provided at the sewage pipe.
4. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 1, characterized in that: A switch valve is installed at the water tank connection pipe and the water inlet pipe.
5. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 1, characterized in that: Switch valves are installed at both the water outlet pipeline and the system pressure replenishment pipeline.
6. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 1, characterized in that: The number of water replenishment pumps is 2-5.
7. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 6, characterized in that: The number of water supply pumps is two.
8. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 1, characterized in that: The water tank assembly is rectangular.
9. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 1, characterized in that: The pressurized water inlet line also includes an atmospheric pressure water inlet pipe, the two ends of which are connected to the water inlet pipeline and an atmospheric pressure water source, respectively.
10. The constant pressure water supply device for a closed-loop air conditioning system as described in claim 9, characterized in that: A switch valve is installed at the connection between the atmospheric pressure inlet pipe and the inlet pipeline.