Plate exchange multi-zone temperature changing device

Abstract

The utility model relates to a plate heat exchange multi-zone temperature changing device which comprises a plate heat exchanger and a water tank, one side of the plate heat exchanger is provided with a medium inlet and a medium outlet, the other side of the plate heat exchanger is provided with a heat exchanger water return pipe and a water tank water return pipe, and the water tank water return pipe is connected to the lower side of the water tank. A ground water supply pipe is further arranged on the lower side of the water tank, a plurality of upper water supply pipe sets are arranged on the upper side of the water tank, each upper water supply pipe set comprises an upper water supply pipe, an upper water return pipe and a proportioning valve, the upper water supply pipes and the upper water return pipes are connected with the water tank, water pumps are arranged on the upper water supply pipes, and the proportioning valves are located on the upper water return pipes. By means of the temperature control system, independent control over the temperatures of different areas can be achieved, the individual requirements are met, and the comfort level of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating and cooling system technology, and in particular to a plate heat exchanger multi-zone variable temperature device. Background Technology

[0002] With the advancement of technology and the development of the social economy, people have increasingly higher requirements for the comfort of their living and working environments. While traditional integrated heating or cooling systems can meet basic temperature regulation needs, they have some shortcomings in practical applications, such as their application in multiple areas. Traditional heating or cooling systems typically employ centralized temperature control, making it impossible to provide personalized temperature adjustments based on the actual needs of different areas. For example, different rooms or functional areas within a building may have different temperature requirements, and traditional systems often cannot adapt well to these differences. Therefore, this application addresses the aforementioned technical problems by making improvements. Utility Model Content

[0003] This invention proposes a plate heat exchanger with multi-zone temperature variation, which solves the above-mentioned problems existing in the use of the prior art.

[0004] The technical solution of this utility model is implemented as follows: A plate heat exchanger multi-zone variable temperature device includes a plate heat exchanger and a water tank. One side of the plate heat exchanger is provided with a medium inlet and a medium outlet, and the other side of the plate heat exchanger is provided with a heat exchanger return water pipe and a water tank return water pipe. The water tank return water pipe is connected to the lower side of the water tank. A ground water supply pipe is also provided on the lower side of the water tank. Several sets of upper water supply pipe groups are provided on the upper side of the water tank. Each upper water supply pipe group includes an upper water supply pipe, an upper return water pipe, and a proportional regulating valve. Both the upper water supply pipe and the upper return water pipe are connected to the water tank. A water pump is provided on the upper water supply pipe. The proportional regulating valve is located on the upper return water pipe. A connecting pipe connected to the proportional regulating valve is provided on the upper water supply pipe.

[0005] Preferably, the water tank is connected to a water supply pipe, and the water supply pipe is connected to a water supply valve.

[0006] Preferably, an electrically controlled two-way valve is also connected between the water supply pipe and the water supply valve.

[0007] Preferably, a pressure detector is provided on the upper side of the water tank, and a thermometer and a pressure gauge are also provided on the front side of the water tank.

[0008] Preferably, the water tank is provided with an air vent valve on its upper side.

[0009] Preferably, a drain valve is provided on the lower side of the water tank.

[0010] Preferably, the proportional regulating valve includes a three-way valve body, an electric actuator, and a valve core. The three-way valve body is connected to the upper return water pipe, the water tank, and the connecting pipe, respectively. The valve core is rotatably fitted inside the three-way valve body. A water passage notch is provided on the valve core. A valve stem is connected between the electric actuator and the valve core.

[0011] In summary, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by adjusting a proportional regulating valve, can control the ratio of water returning to the water tank from the upper return water pipe to water directly entering the upper return water pipe. This allows for adjustment of the water temperature flowing from the upper supply water pipe, enabling independent temperature control of different areas to meet individual needs and improve user comfort. Furthermore, by precisely controlling the water supply temperature of each area, it avoids energy waste caused by overheating or cooling in traditional systems. This not only reduces energy consumption but also contributes to environmental protection. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure when observed from another angle;

[0016] Figure 3 This is a schematic diagram of the proportional control valve in this utility model;

[0017] Figure 4 This is an exploded view of the proportional control valve in this utility model.

[0018] Figure 5 This is a cross-sectional structural diagram of the proportional regulating valve in this utility model.

[0019] In the diagram: 1. Plate heat exchanger; 11. Medium inlet; 12. Medium outlet; 2. Water tank; 31. Heat exchanger return water pipe; 32. Water tank return water pipe; 33. Ground water supply pipe; 41. Upper water supply pipe; 42. Upper return water pipe; 43. Proportional regulating valve; 44. Water pump; 45. Connecting pipe; 51. Makeup water pipe; 52. Makeup water valve; 53. Electrically controlled two-way valve; 61. Pressure detector; 62. Thermometer; 63. Pressure gauge; 7. Air vent valve; 8. Drain valve; 431. Three-way valve body; 432. Electric actuator; 433. Valve core; 434. Water passage notch; 435. Valve stem. Detailed Implementation

[0020] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Example:

[0022] like Figures 1 to 5As shown, this utility model discloses a multi-zone variable temperature plate heat exchanger device, including a plate heat exchanger 1 and a water tank 2. A medium inlet 11 and a medium outlet 12 are provided on one side of the plate heat exchanger 1 for supplying hot or cold water. These media can be hot water from a boiler, heat pump, or other heat source, or cold water from a cooling tower or chiller unit. A heat exchanger return pipe 31 and a water tank return pipe 32 are provided on the other side of the plate heat exchanger 1. The water tank return pipe 32 is connected to the lower side of the water tank 2. A ground water supply pipe 33 is also provided on the lower side of the water tank 2, and is connected to a ground-buried heating and cooling pipeline. Water in the water tank 2 flows through the ground water supply pipe 33 to the ground-buried heating and cooling pipeline, and then returns to the plate heat exchanger 1 through the heat exchanger return pipe 31. Heat exchange occurs within the plate heat exchanger 1, where the water exchanges with the medium. The heat exchanger return pipe 31 then returns the heat-exchanged water to the water tank. Tank 2, in addition, several sets of upper water supply pipe groups are provided on the upper side of the water tank 2. The upper water supply pipe group includes an upper water supply pipe 41, an upper return water pipe 42 and a proportional regulating valve 43. The upper water supply pipe 41 and the upper return water pipe 42 are both connected to the water tank 2. A water pump 44 is provided on the upper water supply pipe 41. In this embodiment, the water pump 44 is an intelligent DC frequency conversion anti-condensation water pump. When the external sensor detects that the ambient temperature and humidity may cause condensation, the water pump will automatically reduce the speed to reduce the possibility of water vapor condensation. Next, the proportional regulating valve 43 is located on the upper return water pipe 42, and the upper supply water pipe 41 is provided with a connecting pipe 45 that connects to the proportional regulating valve 43. The upper supply water pipe 41 and the upper return water pipe 42 are used to connect to the heating and cooling pipes embedded in the wall or ceiling. Different upper supply water pipe groups can be connected to the heating and cooling pipes in different areas. The water in the water tank 2 is transported to the heating and cooling pipes in the wall or ceiling by the water pump 44 in the upper supply water pipe group, and then returns to the water tank 2 through the upper return water pipe 42. By adjusting the proportional regulating valve 43, the ratio of the amount of water returning to the water tank 2 in the upper return water pipe 42 to the amount of water directly entering the upper supply water pipe 41 through the connecting pipe 45 can be controlled. The water temperature entering the upper supply water pipe 41 directly from the upper return water pipe 42 will be close to the ambient temperature, combined with the water entering the upper supply water pipe 41 from the water tank 2. In this way, the temperature of the water flowing out of the upper supply water pipe 41 can be adjusted, thereby achieving independent temperature control of different areas. The water in water tank 2 comes from two sources: one part flows in from plate heat exchanger 1 through water tank return pipe 32, and the other part flows in from upper return pipe 42. These two parts of water mix in water tank 2, then redistribute and flow out to continue circulating. This invention, by setting multiple upper water supply pipe groups and proportional regulating valves 43, can achieve independent temperature control for different areas. Each area can adjust its temperature according to actual needs, meeting personalized requirements and improving user comfort.

[0023] In this utility model, a water supply pipe 51 is connected to the water tank 2, and a water supply valve 52 is connected to the water supply pipe 51. The water supply valve 52 controls the opening and closing of the water supply pipe 51 according to the system settings, thereby ensuring that the water level in the water tank 2 is always kept within a suitable range and preventing abnormal system operation due to low water level. In addition, an electrically controlled two-way valve 53 is connected between the water supply pipe 51 and the water supply valve 52. The electrically controlled two-way valve 53 can automatically open or close according to the system requirements to achieve precise control of the water supply.

[0024] Next, a pressure detector 61 is installed on the upper side of the water tank 2. The pressure detector 61 is used to monitor the pressure inside the water tank 2 in real time. The pressure detector 61 can detect the water pressure inside the water tank 2 to ensure that the system operates within a safe pressure range. In addition, a thermometer 62 and a pressure gauge 63 are also installed on the front side of the water tank 2 to display the water temperature and water pressure inside the water tank 2 in real time.

[0025] In this invention, an air vent valve 7 is provided on the upper side of the water tank 2. The air vent valve 7 ensures that the air inside the water tank 2 is discharged in a timely manner, preventing air accumulation from affecting the normal operation of the system. During system startup or restart after a long period of shutdown, the air vent valve 7 can expel air from the water tank 2, ensuring that the water tank 2 is completely filled with water and improving the system's heat exchange efficiency. The air vent valve 7 can also periodically expel accumulated air during system operation, maintaining stable pressure inside the water tank 2, preventing the formation of air bubbles, reducing the idling and vibration of the water pump 44, and extending the service life of the equipment.

[0026] A drain valve 8 is installed on the lower side of water tank 2 to periodically drain sediment and impurities from the water tank 2. The drain valve 8 ensures the cleanliness of the water in water tank 2 and prevents the accumulation of sediment and impurities from affecting the normal operation of the system.

[0027] like Figures 3 to 5As shown, the proportional regulating valve 43 includes a three-way valve body 431, an electric actuator 432, and a valve core 433. The three-way valve body 431 is connected to the upper return water pipe 42, the water tank 2, and the connecting pipe 45, respectively. The valve core 433 is rotatably fitted inside the three-way valve body 431. A water passage notch 434 is provided on the valve core 433. A valve stem 435 connects the electric actuator 432 and the valve core 433. Water in the upper return water pipe 42 can flow into the water tank 2 or the connecting pipe 45 through the three-way valve body 431, with the specific flow direction determined by the position of the valve core 433. The electric actuator 432 drives the valve core 433 to rotate via the valve stem 435 according to the instructions of the control system. The water passage notch 434 on the valve core 433 can change the water flow path and flow rate. For example, when the valve core 433 rotates to a certain position, most of the water flow will directly enter the upper return water pipe 42 through the connecting pipe 45, without passing through the water tank 2; when the valve core 433 rotates to another position, most of the water flow will enter the water tank 2, mix with the water passing through the plate heat exchanger 1, and then flow out. Through the precise control of the electric actuator 432, the water flow ratio can be finely adjusted. This allows the water temperature flowing out of the upper supply water pipe 41 to be precisely adjusted as needed, thereby achieving independent temperature control of different areas.

[0028] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plate heat exchanger multi-zone variable temperature device, characterized in that: The device includes a plate heat exchanger and a water tank. The plate heat exchanger has a medium inlet and a medium outlet on one side, and a heat exchanger return pipe and a water tank return pipe on the other side. The water tank return pipe is connected to the lower side of the water tank. A ground water supply pipe is also provided on the lower side of the water tank. Several sets of upper water supply pipes are provided on the upper side of the water tank. Each upper water supply pipe set includes an upper water supply pipe, an upper return pipe, and a proportional regulating valve. Both the upper water supply pipe and the upper return pipe are connected to the water tank. A water pump is provided on the upper water supply pipe. The proportional regulating valve is located on the upper return pipe. A connecting pipe connected to the proportional regulating valve is provided on the upper water supply pipe.

2. The plate heat exchanger multi-zone variable temperature device according to claim 1, characterized in that: The water tank is connected to a water supply pipe, and the water supply pipe is connected to a water supply valve.

3. The plate heat exchanger multi-zone variable temperature device according to claim 2, characterized in that: An electrically controlled two-way valve is also connected between the water supply pipe and the water supply valve.

4. The plate heat exchanger multi-zone variable temperature device according to claim 1, characterized in that: A pressure detector is installed on the upper side of the water tank, and a thermometer and a pressure gauge are also installed on the front side of the water tank.

5. A plate heat exchanger multi-zone variable temperature device according to claim 1, characterized in that: An air vent valve is provided on the upper side of the water tank.

6. The plate heat exchanger multi-zone variable temperature device according to claim 1, characterized in that: A drain valve is provided on the lower side of the water tank.

7. A plate heat exchanger multi-zone variable temperature device according to claim 1, characterized in that: The proportional regulating valve includes a three-way valve body, an electric actuator, and a valve core. The three-way valve body is connected to the upper return water pipe, the water tank, and the connecting pipe, respectively. The valve core is rotatably fitted inside the three-way valve body. A water passage notch is provided on the valve core. A valve stem is connected between the electric actuator and the valve core.

Images