CN219976757U

CN219976757U - Energy-saving control device for air-source heat pump hot water system in dormitory

Info

Publication number: CN219976757U
Application number: CN202222378598.0U
Authority: CN
Inventors: 廖仁权; 张皓月; 陈建国; 高菲菲
Original assignee: Chongqing Kangyuan Water Treatment Equipment Co ltd
Current assignee: Chongqing Kangyuan Water Treatment Equipment Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-11-07
Anticipated expiration: 2032-09-07

Abstract

The utility model belongs to the field of air source heat pump water heating equipment, and particularly relates to an energy-saving control device of an air source heat pump water heating system in a student dormitory. The specific technical scheme is as follows: including the circulation loop that sets up on the heat preservation water tank, circulation loop sets gradually first control valve, second control valve, flowmeter and temperature sensor along the flow direction, first control valve and second control valve parallel arrangement, first control valve, second control valve, flowmeter and temperature sensor wireless communication connect automatic control system, the aperture of automatic control system control first control valve, the switch of automatic control system control second control valve. The temperature difference range of the circulation loop and the student dormitory hot water pipe network can be between T2 and T1, so that the rotation speed of the pump is reduced, the heat exchange between hot water and the pipe wall is reduced, and the system obtains the maximum energy efficiency ratio.

Description

Energy-saving control device for air-source heat pump hot water system in dormitory

Technical Field

The utility model belongs to the field of air source heat pump water heating equipment, and particularly relates to an energy-saving control device of an air source heat pump water heating system in a student dormitory.

Background

The air source heat pump water heating device is a green and environment-friendly water heating device capable of replacing a boiler, and the working principle is as follows: the environment-friendly pollution-free refrigerant is adopted to absorb heat in the air, and the heat is exchanged with cold water after the compressor works, so that hot water with the temperature of more than 50 ℃ is provided. The device can be applied to indoor swimming pools, factories, schools and other places needing hot water. When the hot water is used, a period of time is needed to wait for the hot water to be discharged from the water outlet pipe, and the cold water discharged from the water outlet pipe during the period of time is wasted. Therefore, in order to save water and energy, a circulation loop is required to be arranged from the water outlet pipeline to the insulation can for reducing the outflow cold water. The existing circulation loop control mode comprises two modes of temperature control and time control. The existing temperature control mode only has a lower limit and one return difference, when the detected temperature reaches the lower limit, the electromagnetic valve is opened, and when the detected temperature reaches the lower limit and the return difference, the electromagnetic valve is closed, and the set temperature is too high, so that energy consumption is quite high.

In order to ensure the normal work of valves, meters and the like on the pipeline, a pipeline filter is usually required to be arranged, the filtering precision of the traditional pipeline filter is low, and the valves, meters and other precise instruments are easy to be blocked by impurities in water after long-time use, so that the pipeline filter cannot work effectively.

In summary, if an energy-saving control device of an energy-saving and consumption-reducing air energy heat pump water heating system is developed, the energy-saving control device has a good application prospect.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides an energy-saving control device for an air-source heat pump water heating system in a dormitory.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme: an energy-saving control device of a student dormitory air-source heat pump water heating system comprises a heat preservation water tank, wherein a water outlet pipe flowing into the student dormitory is communicated with the heat preservation water tank, a circulating loop is arranged at the upstream section of a water outlet of the water outlet pipe, and the tail end of the circulating loop is connected with the heat preservation water tank; the circulating loop is sequentially provided with a first control valve, a second control valve and a flowmeter and a temperature sensor along the flowing direction, the first control valve and the second control valve are arranged in parallel, the first control valve, the second control valve, the flowmeter and the temperature sensor are in wireless communication connection with an automatic control system, the automatic control system controls the opening degree of the first control valve, and the automatic control system controls the opening and closing of the second control valve; the front ends of the first control valve and the second control valve are provided with pipeline filters.

Preferably: the automatic control system comprises an information receiving module, an analysis module and a control module, wherein the information receiving module and the control module are electrically connected with the analysis module, the flowmeter and the temperature sensor are in wireless communication connection with the information receiving module, and the first control valve and the second control valve are in wireless communication connection with the control module.

Preferably: the first control valve is an electromagnetic valve, and the second control valve is a plug valve.

Preferably: a check valve is arranged between the flowmeter and the temperature sensor.

Preferably: a bypass pipeline is arranged beside the pipeline filter.

Preferably: the pipeline filter comprises a pipeline shell and a filter piece arranged in the pipeline shell, wherein the filter piece comprises a cylindrical filter element, a filter screen is arranged at the outlet end of the filter element, the filter precision of the filter screen is greater than or equal to that of the filter element, and the filter element is connected with the filter screen through a connecting piece.

Preferably: the connecting piece comprises a first connecting plate, and a first groove matched with the outlet end of the filter element is formed in one side of the first connecting plate; the filter comprises a filter core, a filter screen, a first connecting plate, a second groove, a first connecting plate, a second connecting plate and a second connecting plate.

Preferably: and a limiting lug is arranged on one side, facing the second groove, of the second connecting plate, and a third groove corresponding to the limiting lug is arranged at the bottom of the second groove.

Preferably: the outlet end of the filter element is in threaded connection with the inner wall of the first groove.

Preferably: the pipeline shell is Y-shaped; or the periphery of the filter piece is in threaded connection with the pipeline shell.

The utility model has the following beneficial effects:

through set up circulation loop on heat preservation water tank, circulation loop sets gradually first control valve, second control valve, flowmeter and temperature sensor along the flow direction, first control valve and second control valve parallelly connected setting, first control valve, second control valve, flowmeter and temperature sensor wireless communication connect automatic control system, can make the temperature difference scope of circulation loop, student dormitory hot water pipe network between T2 to T1 to reduce the rotational speed of pump, reduce the heat exchange between hot water and the pipe wall, make the system obtain maximum energy efficiency ratio.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an energy-saving control device of an air-source heat pump water heating system;

FIG. 2 is a schematic view of a pipe filter according to the present utility model;

FIG. 3 is a schematic view of a filter according to the present utility model.

In the figure: the heat preservation water tank 1, the cold water heat exchanger 2, the expansion valve 3, the air energy heat exchanger 4, the compressor 5, the gas-liquid separator 6, the pipeline filter 7, the bypass pipeline 8, the second control valve 9, the first control valve 10, the flowmeter 11, the check valve 12, the circulation loop 13, the cold water heating loop 14, the pipeline shell 15, the first connecting plate 16, the filter screen 17, the filter element 18, the filter element outlet end 19, the first groove 20, the second connecting plate 21, the third groove 22, the limit lug 23, the filter element outlet 24, the through hole 25, the temperature sensor 26 and the water outlet pipe 27.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model discloses an energy-saving control device of an air-source heat pump water heating system in a student dormitory, which is shown in figures 1-3 and comprises a heat preservation water tank 1, wherein the heat preservation water tank 1 is communicated with a water outlet pipe 27 flowing into the student dormitory, a circulating loop 13 is arranged at one section of the upstream of the water outlet pipe 27, and the tail end of the circulating loop 13 is connected with the heat preservation water tank 1. A cold water heating loop 14 is arranged at one side of the heat preservation water tank 1, and the cold water heating loop 14 adopts an air energy heat pump system to heat cold water; the other side is provided with a circulation loop 13, so that the hot water outlet time of the water outlet pipe 27 is shortened, the waste of water resources is avoided, and the water is saved.

The circulation loop 13 comprises a circulation pipe with two ends connected with the heat preservation water tank 1, a first control valve 10, a second control valve 9, a flowmeter 11 and a temperature sensor 26 are sequentially arranged on the circulation pipe along the circulation water flow direction, the first control valve 10 and the second control valve 9 are arranged in parallel, and the first control valve 10, the second control valve 9, the flowmeter 11 and the temperature sensor 26 are in wireless communication connection with an automatic control system. The flow meter 11 is provided with a flow sensor which is connected in wireless communication with the automatic control system. The automatic control system controls the opening of the first control valve 10 and the automatic control system controls the opening and closing of the second control valve 9. The flow sensor and the temperature sensor 26 respectively transmit the flow and the temperature of the circulation loop 13 to an automatic control system for analysis.

The automatic control system comprises an information receiving module, an analysis module and a control module, wherein the information receiving module and the control module are electrically connected with the analysis module. The flowmeter 11 and the temperature sensor 26 are in wireless communication connection with the information receiving module, and the first control valve 10 and the second control valve 9 are in wireless communication connection with the control module. The information receiving module receives the flow and temperature information of the flowmeter 11 and the temperature sensor 26 respectively and transmits the flow and temperature information to the analysis module; the analysis module analyzes the flow and temperature information of the circulating pipeline, analyzes and controls how the first control valve 10 and the second control valve 9 work, transmits the work information to the control module, and controls the first control valve 10 and the second control valve 9 to work.

The first control valve 10 is a solenoid valve and the second control valve 9 is a plug valve. A check valve 12 is provided between the flowmeter 11 and the temperature sensor 26. By arranging the check valve 12, the liquid level in the heat preservation water tank 1 is prevented from being too high when the circulation loop 13 is in fault and stops working, so that water in the heat preservation water tank 1 flows back through a pipeline.

Specifically, the temperature control process of the circulation loop 13 mainly has two states: first, when the temperature transmitted to the automatic control system by the temperature sensor 26 is greater than T1, the opening degree of the first control valve 10 is S, and the second control valve 9 is in a closed state. Second, when the temperature transmitted to the automatic control system by the temperature sensor 26 is lower than T2, the opening degree of the first control valve 10 is 20%, and the second control valve 9 is in an open state. Through setting up circulation circuit 13, can make circulation circuit 13, students 'dormitory hot water pipe network's temperature difference scope between T2 and T1 to reduce the rotational speed of pump, reduce the heat exchange between hot water and the pipe wall, make the system obtain maximum energy efficiency ratio.

Further, the method for determining the opening S of the first control valve 10 is as follows: when the valve opening of the first control valve 10 is maximum, the maximum value of the flow meter 11 is confirmed, and then the opening of the first control valve 10 is gradually and slowly decreased until the flow rate value of the flow meter 11 is 20% of the maximum value, at which time the valve opening of the first control valve 10 is determined as S. This control method ensures that the circulation loop 13 has an initial flow rate and that the flow meter 11 detects true.

It should be noted that, the air-source heat pump system on the cold water heating loop is not improved in the present utility model, and the air-source heat pump system belongs to the prior art. For example, the air-source heat pump system comprises a cold water heat exchanger 2 which exchanges heat with cold water in a heat preservation water tank 1, wherein a heat medium of the cold water heat exchanger 2 enters an expansion valve 3 after heat exchange of the heat exchanger, then enters a compressor 5 after passing through an air-source heat exchanger 4, enters a gas-liquid separator 6 after compression and temperature rise of the compressor 5, and then enters the cold water heat exchanger 2.

Further, the front ends of the first control valve 10 and the second control valve 9 are provided with a pipeline filter 7. In the debugging process of the new pipeline, impurities in the pipeline can be blocked, and the impurities in the new pipeline are prevented from flowing into other equipment on the circulation loop, so that the device continuously and normally works. A bypass line 8 is also provided beside the pipe filter 7. When the pipeline filter 7 is in disorder and the filter element needs to be replaced, the bypass pipeline 8 is opened, so that the device can work continuously and normally.

Because the existing pipeline filter can only filter impurities with certain precision, the utility model also provides a pipeline filter 7 with higher precision, as shown in fig. 2-3, the pipeline filter 7 comprises a pipeline shell 15 and a filter piece arranged in the pipeline shell 15, the pipeline shell 15 is Y-shaped, the filter piece comprises a cylindrical filter element 18, the outlet end of the filter element 18 is provided with a filter screen 17, the filter precision of the filter screen 17 is greater than or equal to that of the filter element 18, and the filter element 18 and the filter screen 17 are detachably connected through a connecting piece. Preferably, the filtering precision of the filter screen 17 is greater than that of the filter element 18, the circulating water is primarily filtered through the filter element 18, and then is filtered again through the filter screen 17, so that the filtering precision of the circulating water is improved. Compared with the existing filter, the filter is additionally provided with the filter screen 17, so that circulating water is further filtered, and the normal operation of valves and meters on the circulating pipeline is ensured.

Further, the connecting piece includes a first connecting plate 16, and a first groove 20 adapted to the outlet end 19 of the filter element is provided on one side of the first connecting plate 16. The first connecting plate 16 is provided with a through hole 25 corresponding to the filter element outlet 24, the periphery of the filter screen 17 is provided with a second connecting plate 21, and the other side of the first connecting plate 16 is provided with a second groove matched with the second connecting plate 21. The through hole 25 partially penetrates through the first groove 20, and the through hole 25 partially penetrates through the second groove, and the size of the through hole 25 is consistent with the sizes of the filter element outlet 24 and the filter screen 17. When the filter element is installed, the filter element outlet end 19 extends into the first groove 20, the second connecting plate 21 is inserted into the second groove, the filter element outlet 24 is aligned with the through hole 25, the filter screen 17 is positioned in the through hole 25, and water in the filter element 18 flows out from the filter element outlet 24 through the filter screen 17. Through setting up first recess 20, second recess, realize the detachable connection of filter core 18 and filter screen 17, can quick replacement filter core 18, filter screen 17.

Further, the outlet end 19 of the filter element is in threaded connection with the inner wall of the first groove 20, so as to realize quick connection and disassembly between the filter element 18 and the first connecting plate 16.

In order to firmly connect the second connecting plate 21 with the first connecting plate 16, a limiting bump 23 is disposed on a side of the second connecting plate 21 facing the second groove, and a third groove 22 corresponding to the limiting bump 23 is disposed at the bottom of the second groove.

Further, the periphery of the filtering piece is in threaded connection with the pipeline housing 15, so that the filtering piece and the pipeline housing 15 can be quickly connected and detached.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications, variations, alterations, substitutions made by those skilled in the art to the technical solution of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. An energy-saving control device of an air-source heat pump hot water system for a student dormitory is characterized in that: the water-saving device comprises a heat-preserving water tank (1), wherein the heat-preserving water tank (1) is communicated with a water outlet pipe (27) flowing into a dormitory of students, a circulating loop (13) is arranged at one section of the upstream of a water outlet of the water outlet pipe (27), and the tail end of the circulating loop (13) is connected with the heat-preserving water tank (1); the circulating loop (13) is sequentially provided with a first control valve (10), a second control valve (9), a flowmeter (11) and a temperature sensor (26) along the circulating water flowing direction, the first control valve (10) and the second control valve (9) are arranged in parallel, the first control valve (10), the second control valve (9), the flowmeter (11) and the temperature sensor (26) are in wireless communication connection with an automatic control system, the automatic control system controls the opening degree of the first control valve (10), and the automatic control system controls the opening and closing of the second control valve (9); the front ends of the first control valve (10) and the second control valve (9) are provided with pipeline filters (7).

2. The energy-saving control device for the air-source heat pump water heating system of the student dormitory according to claim 1, wherein: the automatic control system comprises an information receiving module, an analysis module and a control module, wherein the information receiving module, the control module and the analysis module are electrically connected, the flowmeter (11) and the temperature sensor (26) are in wireless communication connection with the information receiving module, and the first control valve (10) and the second control valve (9) are in wireless communication connection with the control module.

3. The energy-saving control device for the air-source heat pump water heating system of the student dormitory according to claim 1, wherein: the first control valve (10) is a solenoid valve, and the second control valve (9) is a plug valve.

4. The energy-saving control device for the air-source heat pump water heating system of the student dormitory according to claim 1, wherein: a check valve (12) is arranged between the flowmeter (11) and the temperature sensor (26).

5. The energy-saving control device for the air-source heat pump water heating system of the student dormitory according to claim 1, wherein: a bypass pipeline (8) is arranged beside the pipeline filter (7).

6. The energy-saving control device for the air-source heat pump water heating system in the dormitory of the students according to claim 5, wherein: the pipeline filter (7) comprises a pipeline shell (15) and a filter piece arranged in the pipeline shell (15), wherein the filter piece comprises a cylindrical filter element (18) and a filter element outlet end (19), the filter element outlet end (19) is provided with a filter screen (17), the filter precision of the filter screen (17) is greater than or equal to that of the filter element (18), and the filter element (18) is connected with the filter screen (17) through a connecting piece.

7. The energy-saving control device for the air-source heat pump water heating system in the dormitory of the students according to claim 6, wherein: the connecting piece comprises a first connecting plate (16), and a first groove (20) matched with the outlet end of the filter element is formed in one side of the first connecting plate (16); the filter comprises a first connecting plate (16), a filter core (18) and a filter screen (17) are arranged on the first connecting plate (16), a second connecting plate (21) is arranged on the periphery of the filter screen (17), and a second groove matched with the second connecting plate (21) is formed in the other side of the first connecting plate (16).

8. The energy-saving control device for the air-source heat pump water heating system in the dormitory of the students according to claim 7, wherein: and a limiting lug (23) is arranged on one side, facing the second groove, of the second connecting plate (21), and a third groove (22) corresponding to the limiting lug (23) is arranged at the bottom of the second groove.

9. The energy-saving control device for the air-source heat pump water heating system in the dormitory of the students according to claim 8, wherein: the filter element outlet end (19) is in threaded connection with the inner wall of the first groove (20).

10. The energy-saving control device for the air-source heat pump water heating system in the dormitory of the students according to claim 6, wherein: the pipeline shell (15) is Y-shaped; or the periphery of the filtering piece is in threaded connection with the pipeline shell (15).