Constant pressure water supplementing device for air conditioning and heating system
By adopting a dual-pump design in the air conditioning and heating system, the pump can serve two purposes: pressure relief and water replenishment. This solves the problems of high energy consumption and high cost, and improves the pump utilization rate.
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
AI Technical Summary
The existing constant pressure water supply equipment for air conditioning and heating systems suffers from high energy consumption, low pump utilization, and high cost.
The system employs a dual-pump design, serving as both a circulation pump and a water replenishment booster pump. Through the configuration of pipelines and valves, it achieves dual functionality, meeting the system's pressure relief and water replenishment needs.
It effectively reduced energy consumption, improved pump utilization, and lowered system costs.
Smart Images
Figure CN224415379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to water supply technology for air conditioning heating systems, and more particularly to a constant pressure water supply device for air conditioning heating systems. Background Technology
[0002] Currently, air source heat pump water heaters have gained significant advantages and widespread popularity in most parts of China due to their high energy efficiency, environmental protection, ability to provide year-round heating and cooling, and ease of installation and use. Their rapid development and strong demand for high performance have attracted widespread attention from industry professionals. Besides being significantly affected by compressor efficiency, system matching, and operating condition settings, defrosting process control is one of the crucial factors influencing heat pump performance. In a closed-loop system, an expansion device is needed to ensure system pressure stability. When the system pressure decreases, liquid from the diaphragm atmospheric pressure tank is replenished into the system via a circulation pump until the set upper pressure limit is reached, at which point the circulation pump stops operating. When the water in the system is heated, its temperature rises, its volume expands, and the system pressure increases. When the upper limit setting is reached, the water in the system returns to the diaphragm atmospheric pressure tank through a safety release device. The system pressure also drops to the set value and pressure release stops, achieving the function of constant pressure water replenishment.
[0003] Patent document with application number "CN201710063904.2" discloses a combined ventilation and air conditioning system with heat recovery and air purification. It consists of an insulated modular air conditioning floor, an indoor ventilation and air conditioning system, and a solar heating and insulation curtain wall ventilation and air conditioning system. The indoor ventilation and air conditioning system is composed of an air filter supply cabinet 1, a waste heat recovery riser 2, a waste heat recovery horizontal pipe 3, a window-type air inlet and outlet box 4, and an exhaust box 5. The insulated modular air conditioning floor consists of a dehumidifying ventilation and air conditioning pipe, a heat exchange coil, a ventilation and insulation module, underfloor heating pipes, a manifold, a moisture-proof and heat-conducting layer, wooden floor, a floor supply riser, a dehumidifying exhaust riser, a return air cabinet, and a dustproof air outlet. It forms a multi-energy complementary integrated ventilation and air conditioning system with the indoor ventilation and air conditioning system and the solar heating and insulation curtain wall.
[0004] The aforementioned patent documents, in conjunction with existing technology, reveal the following defects in existing constant pressure water supply equipment for air conditioning and heating systems:
[0005] Currently, in many applications, users use water tanks as the water source for the system. However, the height of the water tank is limited, and depending on the height, it can only provide a maximum inlet pressure of 0.2-0.3 MPa. In actual use, an additional pump system is required for normal operation. In summary, the existing water replenishment system has the problems of high energy consumption, low pump utilization, and high cost. Utility Model Content
[0006] In order to overcome the shortcomings of the existing technology, this utility model provides a constant pressure water supply device for air conditioning and heating systems, which solves the problems of high energy consumption, low pump utilization and high cost.
[0007] The first aspect of this utility model is to provide a constant pressure water supply device for an air conditioning and heating system, used for depressurization and water supply of the air conditioning and heating system, including a first pump body, a second pump body, a water tank assembly, a diaphragm tank assembly, a pressure relief pipeline, an inflow pipeline, an outflow pipeline, a first pipeline, a second pipeline, a second outflow pipeline, a first outflow pipeline, and an additional water supply line. The pressure relief pipeline is connected to the pressure relief outlet of the air conditioning system. The two ends of the inflow pipeline are respectively connected to the lower part of the pressure relief pipeline and the diaphragm tank assembly; the end of the outflow pipeline is connected to the diaphragm tank assembly. The first pipeline, the second pump body, the second pump body, the third pump body, the fourth pump body, the fifth pump body, the sixth pump body, the seventh pump body, the fifth pump body, the sixth pump body, the seventh pump body, the eighth pump body, the ninth pump body, the eleventh ... The two pipelines are respectively connected to the outflow pipeline. The additional water supply line is provided with a first interface and a second interface facing upwards. The first pump body, the first pipeline, and the first interface are connected by a three-way valve and are provided with a first three-way control valve. The second pump body, the second pipeline, and the second interface are connected by a three-way valve and are provided with a second three-way control valve. The inflow pipeline is respectively connected to the first pipeline and the second pipeline. The first outflow pipeline is connected to the output end of the first pump body. The second outflow pipeline is connected to the output end of the second pump body. The second outflow pipeline is connected to the water supply port of the air conditioning system.
[0008] In a preferred embodiment of the first aspect of this utility model, the pressure relief pipeline is L-shaped, and a pressure relief control valve is provided at the pressure relief pipeline.
[0009] In a preferred embodiment of the first aspect of this utility model, a second output control valve is provided at the connection between the inflow pipe and the first pipe.
[0010] In a preferred embodiment of the first aspect of this utility model, a first output control valve is provided at the connection between the inflow pipe and the second pipe.
[0011] In a first aspect of this utility model, as a preferred embodiment, the first outflow pipe is L-shaped and the second outflow pipe is vertical.
[0012] In a first aspect of this utility model, as a preferred embodiment, the setting direction of the first pump body is parallel to the setting direction of the second pump body.
[0013] In a preferred embodiment of the first aspect of this utility model, a fixing block is provided at the lower part of the first pump body and the second pump body.
[0014] In a preferred embodiment of the first aspect of this utility model, a lower control valve is provided on the additional water supply line.
[0015] In a preferred embodiment of the first aspect of this utility model, the inflow pipe and the outflow pipe are flexible hoses.
[0016] In a preferred embodiment of the first aspect of this utility model, the constant pressure water supply device for the air conditioning and heating system further includes a control cabinet assembly, which is connected to each valve body.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] The two pump bodies can be used not only as circulation pumps, but also as water replenishment booster pumps when additional water is needed. Through the wiring and valve body settings, one pump can serve two purposes, solving the problems of high energy consumption, low pump utilization, and high cost. Attached Figure Description
[0019] Figure 1 This is a perspective view of the present utility model;
[0020] Figure 2 This is another perspective view of the present invention;
[0021] Figure 3 This is another perspective view of the present utility model;
[0022] Figure 4 This is another perspective view of the present utility model.
[0023] In the diagram: 101, water tank assembly; 102, diaphragm tank assembly; 103, control cabinet assembly; 201, first pump body; 202, second pump body; 10, pressure relief pipeline; 11, pressure relief control valve; 20, inflow pipeline; 30, outflow pipeline; 41, first pipeline; 411, first three-way control valve; 42, second pipeline; 421, second three-way control valve; 50, second outflow pipeline; 51, first output control valve; 60, first outflow pipeline; 61, second output control valve; 70, additional water supply line; 71, lower control valve. 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 1-4 As shown, a constant pressure water supply device for an air conditioning and heating system is used for depressurization and water supply to the system. It includes a first pump body 201, a second pump body 202, a water tank assembly 101, a diaphragm tank assembly 102, a pressure relief pipeline 10, an inflow pipeline 20, an outflow pipeline 30, a first pipeline 41, a second pipeline 42, a second outflow pipeline 50, a first outflow pipeline 60, and an additional water supply line 70. The pressure relief pipeline 10 is connected to the pressure relief outlet of the air conditioning system. Both ends of the inflow pipeline 20 are connected to the lower part of the pressure relief pipeline 10 and the diaphragm tank assembly 102, respectively. When pressure relief is required, this line is set as a pressure relief line via a valve control, and the pressure-relieved water flows along the inflow pipeline 20 into the diaphragm tank assembly 102.
[0029] The end of the outflow pipe 30 is connected to the diaphragm tank assembly 102. The first pipe 41 and the second pipe 42 are respectively connected to the outflow pipe 30. The additional water supply line 70 is provided with a first interface and a second interface facing upward. The first pump body 201, the first pipe 41, and the first interface are connected by a three-way valve and a first three-way control valve 411 is provided. The second pump body 202, the second pipe 42, and the second interface are connected by a three-way valve and a second three-way control valve 421 is provided. The inflow pipe 20 is respectively connected to the first pipe 41 and the second pipe 42. The first outflow pipe 60 is connected to the output end of the first pump body 201. The second outflow pipe 50 is connected to the output end of the second pump body 202. The second outflow pipe 50 is connected to the water supply port of the air conditioning system. In this application, the two pump bodies can be used not only as circulation pumps, but also as water replenishment booster pumps when additional water is needed. Through the wiring and valve body settings, one pump can serve two purposes, solving the problems of high energy consumption, low pump utilization, and high cost.
[0030] Specifically, when self-circulation water replenishment is required, the liquid in the diaphragm tank assembly 102 flows into the air conditioning system through the second outflow pipe 50 after being pressurized by two pumps along the outflow pipe 30.
[0031] Because of liquid medium losses in the system due to evaporation, leakage, and the discharge of liquid from the closed system when the pressure exceeds the limit setting, external replenishment of the medium is required when the liquid medium in the closed system cannot meet the constant pressure requirement. When excessive circulating water loss occurs, an additional water replenishment line 70 can be used, with two pumps inputting into the inflow pipe 20 and flowing into the diaphragm tank assembly 102. Switching between various modes can be achieved using control valves.
[0032] In a preferred embodiment of the first aspect of this utility model, the pressure relief pipeline 10 is L-shaped, and a pressure relief control valve 11 is provided at the pressure relief pipeline 10. A second output control valve 61 is provided at the connection between the inflow pipeline 20 and the first pipeline 41. A first output control valve 51 is provided at the connection between the inflow pipeline 20 and the second pipeline 42. The first outflow pipeline 60 is L-shaped, and the second outflow pipeline 50 is vertical. The setting direction of the first pump body 201 is parallel to the setting direction of the second pump body 202. Fixing blocks are provided at the lower parts of the first pump body 201 and the second pump body 202.
[0033] In a preferred embodiment of the first aspect of this utility model, a lower control valve 71 is provided on the additional water supply line 70. The inflow pipe 20 and the outflow pipe 30 are flexible hoses. The constant pressure water supply device for the air conditioning and heating system also includes a control cabinet assembly 103, which is connected to each valve body for convenient control.
[0034] 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 an air conditioning and heating system, for pressure relief and water supply of an air conditioning and heating system, characterized by, It includes a first pump body, a second pump body, a water tank assembly, a diaphragm tank assembly, a pressure relief pipeline, an inflow pipeline, an outflow pipeline, a first pipeline, a second pipeline, a second outflow pipeline, a first outflow pipeline, and an additional water supply line. The pressure relief pipeline is connected to the pressure relief outlet of the air conditioning system, and both ends of the inflow pipeline are connected to the lower part of the pressure relief pipeline and the diaphragm tank assembly, respectively. The end of the outflow pipe is connected to the diaphragm tank assembly. The first pipe and the second pipe are respectively connected to the outflow pipe. The additional water supply line is provided with a first interface and a second interface facing upward. The first pump body, the first pipe, and the first interface are connected by a three-way valve and are provided with a first three-way control valve. The second pump body, the second pipe, and the second interface are connected by a three-way valve and are provided with a second three-way control valve. The inflow pipe is connected to the first pipe and the second pipe respectively, the first outflow pipe is connected to the output end of the first pump body, the second outflow pipe is connected to the output end of the second pump body, and the second outflow pipe is connected to the water inlet of the air conditioning system.
2. The constant pressure water supply device for an air conditioning and heating system according to claim 1, wherein: The pressure relief pipeline is L-shaped, and a pressure relief control valve is installed at the pressure relief pipeline.
3. The constant pressure water supply device for an air conditioning and heating system according to claim 1, wherein: A second output control valve is provided at the connection between the inflow pipe and the first pipe.
4. The constant pressure water supply device for an air conditioning and heating system according to claim 3, wherein: A first output control valve is provided at the connection between the inflow pipe and the second pipe.
5. The constant pressure water supply device for an air conditioning and heating system according to claim 4, wherein: The first outflow pipe is L-shaped, and the second outflow pipe is vertical.
6. The constant pressure water supply device for an air conditioning and heating system according to claim 1, wherein: The first pump body is set in a direction parallel to the second pump body.
7. The constant pressure water supply device for an air conditioning and heating system according to claim 6, wherein: The lower part of the first pump body and the second pump body is provided with a fixing block.
8. The constant pressure water supply device for an air conditioning and heating system according to claim 1, wherein: The additional water supply line is equipped with a lower control valve.
9. The constant pressure water supply device for an air conditioning and heating system as described in claim 1, characterized in that: The inflow and outflow pipes are flexible hoses.
10. The constant pressure water supply device for an air conditioning and heating system as described in claim 1, characterized in that: The constant pressure water supply equipment for the air conditioning and heating system also includes a control cabinet assembly, which is connected to each valve body.