Pressure-bearing volumetric air energy water heater

Abstract

The invention relates to the technical field of water heater equipment, and discloses a pressure-bearing volumetric air energy water heater which comprises a water tank and a heat exchange pipe, the water tank is of a vertical cylindrical structure, the thickness of the inner wall of the upper portion is larger than that of the lower portion, the heat exchange pipe is annularly arranged on the inner wall of the lower portion of the water tank, and the inlet and outlet ends of the heat exchange pipe penetrate through the water tank to be connected with an external heat exchange mechanism. An annular baffle capable of moving up and down is arranged on the inner wall of the upper portion of the water tank, the annular baffle moves downwards to form a sealed space with the lower portion of the water tank, the heat exchange pipe is located in the sealed space, and an ultrasonic cleaning mechanism and a high-pressure flushing mechanism are arranged in the sealed space and used for cleaning the heat exchange pipe. According to the water heater cleaning system, through combination of structural innovation and intelligent control, the water heater cleaning system which is efficient, energy-saving, environment-friendly and high in automation degree is provided, and the problems that in the prior art, cleaning is inconvenient, efficiency is low, and use is affected are effectively solved.

Description

Technical Field

[0001] This application relates to the field of water heater equipment technology, and in particular to a pressurized volumetric air source water heater. Background Technology

[0002] Currently, air source heat pump water heaters, solar water heaters, and other similar devices commonly use heat exchange tubes installed inside a water tank for heating. These heat exchange tubes are typically arranged around the inner wall of the tank, achieving heating through heat exchange with the water inside. However, over long-term use, scale and deposits easily accumulate on the outer wall of the heat exchange tubes, affecting heat exchange efficiency, leading to increased energy consumption and a shortened equipment lifespan. Common cleaning methods include manual disassembly and chemical cleaning, both of which require draining water and shutting down the machine for cleaning, which is inconvenient. Therefore, a pressurized, volumetric air source heat pump water heater is proposed. Summary of the Invention

[0003] To address the inconvenience of existing methods requiring drainage and shutdown for cleaning during operation, this application provides a pressurized storage air source water heater.

[0004] This application provides a pressurized, volumetric air source water heater with the following technical solution:

[0005] A pressurized volumetric air source water heater includes a water tank and heat exchange tubes. The water tank has a vertical cylindrical structure with an upper inner wall thickness greater than the lower wall thickness. The heat exchange tubes are arranged in a ring on the lower inner wall of the water tank. The inlet and outlet ends of the heat exchange tubes pass through the water tank and are connected to an external heat exchange mechanism. The upper inner wall of the water tank is provided with a ring-shaped baffle that can move up and down. When the ring-shaped baffle moves down, it forms a sealed space with the lower part of the water tank. The heat exchange tubes are located inside the sealed space. The sealed space is provided with an ultrasonic cleaning mechanism and a high-pressure flushing mechanism, both of which are used to clean the heat exchange tubes.

[0006] Preferably, the heat exchange mechanism includes a compressor and conduits. The conduits are provided in two sets, which are respectively installed at the inlet and outlet of the compressor, and the two sets of conduits are respectively connected to the two ends of the heat exchange tube.

[0007] Preferably, the heat exchange tube is composed of multiple U-shaped tubes arranged in a ring shape and circumferentially along the lower inner wall of the water tank.

[0008] Preferably, a groove is formed in the upper inner wall of the water tank, and an annular baffle is slidably connected inside the groove. Electric push rods are provided on both sides of the upper surface of the annular baffle. The fixed end of the electric push rod is fixedly embedded in the inner wall of the water tank, and an insertion port adapted to the annular baffle is formed in the lower part of the groove.

[0009] Preferably, the ultrasonic cleaning mechanism includes an ultrasonic generator and an ultrasonic transducer, which are installed on the lower side wall of the water tank.

[0010] Preferably, the ultrasonic frequency is 20kHz to 100kHz.

[0011] Preferably, the high-pressure flushing mechanism includes an annular tube fixedly embedded in the bottom surface of the water tank, the annular tube being located inside the sealed space, the surface of the annular tube being provided with uniformly distributed nozzles, the nozzles spraying upwards, the annular tube being connected to the center of the bottom of the water tank being provided with a connecting pipe, the connecting pipe being provided with a pump, and the bottom wall of the water tank being provided with a drain pipe inside the sealed space.

[0012] Preferably, the top of the water tank is provided with a drain pipe and a water inlet pipe, both of which are connected to an external delivery pipeline.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] This invention, through the design of annular baffles, ultrasonic cleaning mechanisms, and high-pressure flushing mechanisms, completes the cleaning of heat exchange tubes without emptying the water tank, avoiding energy waste and interruptions associated with traditional cleaning methods. It improves the continuous operation capability of the equipment, making it particularly suitable for scenarios with high requirements for continuous hot water supply, such as commercial hot water systems. Employing a dual cleaning method of ultrasonic cleaning and high-pressure flushing, ultrasonic waves can penetrate deep into the surface of the heat exchange tubes to remove stubborn scale, while high-pressure flushing further removes residual impurities, ensuring comprehensive cleaning and effectively preventing a decline in heat exchange efficiency and extending the equipment's service life. Therefore, this invention, through the combination of structural innovation and intelligent control, provides a highly efficient, energy-saving, environmentally friendly, and highly automated water heater cleaning system, effectively solving the problems of inconvenient cleaning, low efficiency, and impact on usability in existing technologies. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the application embodiment;

[0016] Figure 2 This is an incomplete cross-sectional view of the water tank in the application embodiment;

[0017] Figure 3 This is a complete cross-sectional view of the water tank in the embodiment of the application;

[0018] Figure 4 This is a schematic diagram of the structure when the annular baffle moves downward in the embodiment of the application;

[0019] Figure 5 This is an example of the application. Figure 3 Enlarged view of point A in the middle.

[0020] Explanation of reference numerals in the attached diagram: 1. Compressor; 2. Water tank; 3. Pipe; 4. Ultrasonic generator; 5. Ultrasonic transducer; 6. Heat exchange tube; 7. Inlet; 8. Tank; 9. Annular baffle; 10. Electric push rod; 11. Connecting pipe; 12. Pump; 13. Drain pipe; 14. Inlet pipe; 15. Sewage pipe; 16. Nozzle; 17. Annular pipe. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0022] This application discloses a pressurized volumetric air source water heater, including a water tank 2 and a heat exchange tube 6. The water tank 2 is a vertical cylindrical structure with a thicker upper inner wall than the lower one. The heat exchange tube 6 is arranged in a ring on the lower inner wall of the water tank 2. The inlet and outlet ends of the heat exchange tube 6 pass through the water tank 2 and are connected to an external heat exchange mechanism. The upper inner wall of the water tank 2 is provided with an annular baffle 9 that can move up and down. When the annular baffle 9 moves down, it forms a sealed space with the lower part of the water tank 2. The heat exchange tube 6 is located inside the sealed space. An ultrasonic cleaning mechanism and a high-pressure flushing mechanism are provided inside the sealed space, both of which are used to clean the heat exchange tube 6.

[0023] A trough 8 is provided in the upper inner wall of the water tank 2. An annular baffle 9 is slidably connected inside the trough 8. Electric push rods 10 are provided on both sides of the upper surface of the annular baffle 9. The fixed end of the electric push rod 10 is fixedly embedded in the inner wall of the water tank 2. An insertion port 7 that matches the annular baffle 9 is provided in the lower part of the trough 8.

[0024] This application enables automatic cleaning of the heat exchange tube 6 without draining water or shutting down the machine. The cleaning process consists of two stages: ultrasonic cleaning and high-pressure rinsing. The entire cleaning process is achieved by creating a sealed space through the downward movement of the annular baffle 9.

[0025] Before the cleaning begins, the electric push rod 10 is activated, driving the annular baffle 9 to move down from the tank 8 along the inlet 7 to the lower part of the water tank 2, forming a closed cleaning space with the lower inner wall of the water tank 2, i.e., a sealed space; this sealed space only surrounds the area of ​​the heat exchange tube 6 and does not affect the water use of the water heater.

[0026] It should be noted that: in order to ensure that the annular baffle 9 can form a reliable seal with the inlet 7 and the inner wall of the water tank 2 during the downward movement, and to prevent the cleaning fluid from leaking or affecting the normal use of the water stored in the upper part of the water tank 2 during the cleaning process, the outer peripheral surface of the annular baffle 9 is provided with a sealing element. To ensure stable sealing performance and long service life, the sealing element is preferably made of silicone, polyurethane or other materials.

[0027] The ultrasonic cleaning mechanism includes an ultrasonic generator 4 and an ultrasonic transducer 5, which are installed on the lower side wall of the water tank 2; the ultrasonic frequency is 20kHz to 100kHz.

[0028] After the sealed space is formed, the ultrasonic cleaning mechanism is activated. The ultrasonic generator 4 converts high-frequency electrical signals into ultrasonic energy via the ultrasonic transducer 5, which acts on the water within the sealed space to clean the outer wall of the heat exchange tube 6. The ultrasonic frequency range is 20kHz to 100kHz, suitable for removing scale, silt, and other deposits. The ultrasonic waves generate a cavitation effect as they propagate in the water, causing the dirt adhering to the outer wall of the heat exchange tube 6 to detach. Ultrasonic cleaning is a non-contact cleaning method, which does not damage the surface of the heat exchange tube 6 and has high cleaning efficiency and low energy consumption. During the cleaning process, the water stored in the upper part of the water tank 2 is unaffected, and users can still use hot water normally. The cleaning time for this stage can be set according to the degree of contamination of the heat exchange tube 6, typically 10 to 30 minutes. After cleaning is completed, the system automatically enters the high-pressure rinsing stage.

[0029] The high-pressure flushing mechanism includes an annular tube 17 fixedly embedded in the bottom surface of the water tank 2. The annular tube 17 is located inside the sealed space. The surface of the annular tube 17 is provided with evenly distributed nozzles 16. The nozzles 16 spray upward. The annular tube 17 is connected to the center of the bottom of the water tank 2 by a connecting pipe 11. A pump 12 is provided on the connecting pipe 11. The bottom wall of the water tank 2 is provided with a drain pipe 15 inside the sealed space.

[0030] After ultrasonic cleaning, the high-pressure rinsing mechanism is activated to further remove the detached dirt. The high-pressure rinsing process is as follows: Pump 12 is started to draw cleaning water from the bottom of water tank 2 and deliver it to annular pipe 17 through connecting pipe 11; multiple evenly distributed nozzles 16 are provided on the surface of annular pipe 17, and the nozzles 16 spray high-pressure water upwards; the high-pressure water flow flushes the heat exchange tube 6, further removing the dirt detached during the ultrasonic cleaning stage; the wastewater after cleaning is discharged through the drain pipe 15 set on the bottom wall of water tank 2, achieving thorough removal of dirt; the high-pressure rinsing process lasts for about 5 to 15 minutes. After rinsing, the annular baffle 9 is driven by electric push rod 10 to rise back to the top of water tank 2, restoring the overall water flow state of water tank 2.

[0031] In addition, in order to achieve orderly discharge of wastewater during the cleaning process and to prevent leakage of water tank 2 during normal operation, a valve body is provided inside the sewage pipe 15 to control the on / off state of the sewage pipe 15; the valve body is located inside the sewage pipe 15 or at the connection node, and can automatically or manually control the opening and closing of the sewage pipe 15 according to the needs of the cleaning process.

[0032] In this embodiment, the operation of the electric push rod 10, the ultrasonic cleaning mechanism, and the high-pressure rinsing mechanism are all uniformly controlled by the water heater's control system to achieve automated and intelligent operation of the cleaning process. The water heater control system used is a mature existing technology, and can be implemented by selecting PLC, microcontroller, embedded system, or IoT controller, depending on the equipment level and control requirements. Further details are omitted here.

[0033] Furthermore, the heat exchange mechanism includes a compressor 1 and a conduit 3. The conduit 3 is provided in two sets, which are respectively installed at the inlet and outlet of the compressor 1. The two sets of conduits 3 are respectively connected to the two ends of the heat exchange tube 6. The heat exchange tube 6 adopts a ring structure composed of multiple U-shaped tubes and is arranged circumferentially along the lower inner wall of the water tank 2. The top of the water tank 2 is provided with a drain pipe 13 and a water inlet pipe 14, both of which are connected to the external conveying pipeline.

[0034] The compressor 1, as the core heat source component of this air source water heater, adopts an air source heating method, utilizing the low-grade heat energy in the air for heating. Its working principle is as follows: The compressor 1 compresses the refrigerant, causing it to absorb heat from the ambient air in the evaporator, and releases this heat through a condensation process into the heat exchange tubes 6 in the water tank 2, thereby heating the water stored in the tank 2. This process follows the heat pump principle and belongs to air source heat pump technology, a widely used energy-saving heating method in current water heating equipment. The compressor 1 is connected to both ends of the heat exchange tubes 6 via two sets of conduits 3, forming a closed refrigerant circulation loop. High-temperature, high-pressure refrigerant flows inside the heat exchange tubes 6, exchanging heat with the water in the water tank 2, thus heating the water. The air source heating method of the compressor 1, the connection structure of the conduits 3, and the refrigerant circulation system described above are all existing technologies well-known to those skilled in the art and widely used in air source water heaters. Their specific structures and control methods are not innovative points of this application and will not be elaborated further.

[0035] The top of water tank 2 is equipped with a drain pipe 13 and a water inlet pipe 14, used to drain water from water tank 2 and replenish cold water into water tank 2, respectively. Both pipes are connected to the external water supply and drainage system to realize the normal water supply and maintenance drainage functions of the water heater. The connection methods of this type of pipe to the external transmission system, including interface structure, valve control, water pressure regulation, etc., are all common pipe connection technologies and fall within the scope of existing technology. In this application, they exist only as a functional component.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0038] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pressurized volumetric air source water heater, comprising a water tank (2) and heat exchange tubes (6), characterized in that, The water tank (2) is a vertical cylindrical structure with a thicker upper inner wall than the lower one. The heat exchange tube (6) is arranged in a ring on the lower inner wall of the water tank (2). The inlet and outlet ends of the heat exchange tube (6) pass through the water tank (2) and are connected to the external heat exchange mechanism. The upper inner wall of the water tank (2) is provided with an annular baffle (9) that can move up and down. The annular baffle (9) moves down and forms a sealed space with the lower part of the water tank (2). The heat exchange tube (6) is located inside the sealed space. The sealed space is provided with an ultrasonic cleaning mechanism and a high-pressure flushing mechanism, both of which are used to clean the heat exchange tube (6).

2. A pressurized volumetric air source water heater according to claim 1, characterized in that, The heat exchange mechanism includes a compressor (1) and a conduit (3). The conduit (3) is provided in two sets, which are installed at the inlet and outlet of the compressor (1) respectively. The two sets of conduits (3) are connected to the two ends of the heat exchange tube (6) respectively.

3. A pressurized volumetric air source water heater according to claim 2, characterized in that, The heat exchange tube (6) is composed of multiple U-shaped tubes arranged in a ring structure and is arranged circumferentially along the lower inner wall of the water tank (2).

4. A pressurized volumetric air source water heater according to claim 3, characterized in that, The water tank (2) has a groove (8) inside the upper inner wall. An annular baffle (9) is slidably connected inside the groove (8). Electric push rods (10) are provided on both sides of the upper surface of the annular baffle (9). The fixed end of the electric push rod (10) is fixedly embedded in the inner wall of the water tank (2). The lower part of the groove (8) has an insertion port (7) that matches the annular baffle (9).

5. A pressurized volumetric air source water heater according to claim 4, characterized in that, The ultrasonic cleaning mechanism includes an ultrasonic generator (4) and an ultrasonic transducer (5), which are installed on the lower side wall of the water tank (2).

6. A pressurized volumetric air source water heater according to claim 4, characterized in that, The ultrasonic frequency is 20kHz to 100kHz.

7. A pressurized volumetric air source water heater according to claim 4, characterized in that, The high-pressure flushing mechanism includes an annular tube (17) fixedly embedded in the bottom surface of the water tank (2). The annular tube (17) is located inside the sealed space. The surface of the annular tube (17) is provided with uniformly distributed nozzles (16). The nozzles (16) spray upward. The annular tube (17) and the center of the bottom of the water tank (2) are provided with a connecting pipe (11). A pump (12) is provided on the connecting pipe (11). The bottom wall of the water tank (2) is located inside the sealed space and is provided with a drain pipe (15).

8. A pressurized volumetric air source water heater according to claim 4, characterized in that, The top of the water tank (2) is provided with a drain pipe (13) and a water inlet pipe (14), both of which are connected to an external conveying pipeline.

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