Dual-energy integrated water heating device

Abstract

The utility model belongs to the technical field of water heating devices, and discloses a dual-energy integrated water heating device which is mainly used for solving the problems that an existing dual-energy water heating device combining gas heating and heat pump heating is difficult to control and an integrated product is difficult to form. The combustion unit and the heat pump unit are both attached to the water storage barrel to be assembled, the overall structure of the two units and the water storage tank is very compact, the integration degree is high, and the dual-energy water heating device is greatly helped to form a standardized integrated product; the two heating systems adopt two sets of independent heat exchange systems for heat exchange respectively, the two sets of independent heat exchange systems do not interfere with each other, relatively, control is simpler, long-term work of the heat exchange systems can be guaranteed, and the heat exchange efficiency of different heat exchange systems in different heating systems can also be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water heaters, and in particular relates to a dual-energy integrated water heater. Background Art

[0002] Water heaters are household appliances commonly used in people's daily lives. In the field of traditional water heaters, electric water heaters and gas water heaters are the most widely used. However, with the continuous progress of society and the continuous development of science and technology, more and more new energy water heaters have been created. Among them, the most efficient are solar water heaters and air-energy water heaters. Both types of water heaters use nature's own energy to generate heat, which is not only energy-saving and environmentally friendly, but also more in line with China's concept of sustainable development.

[0003] In recent years, since single-energy water heating devices have more or less certain shortcomings, dual-energy water heating devices that combine two different energy heating systems have emerged, such as a dual-energy water heater that combines wind energy and solar energy disclosed in patent application number "CN200920253664.3", and a dual-energy water heater that combines solar energy and air energy disclosed in patent application number "CN201721591231.X".

[0004] Dual-energy water heating devices that combine gas water heating devices with air-energy water heating devices (i.e., heat pump water heating devices) have also appeared, but currently this type of water heating device generally shares a heat exchange system, such as the dual-energy water heater disclosed in patent application number "CN202011414397.0". Such an architecture will certainly make the overall structure of the device simpler and smaller in size, but sharing a heat exchange system is more likely to cause overload of the heat exchange system and low heat exchange efficiency, and the control switching of the heating system will also be more complicated; on the other hand, current research on dual-energy water heating devices is more inclined to the working combination between dual-energy heating systems, and there is no relatively integrated integrated product output. Because the dual-energy water heating device involves relatively many local components, if it is produced as an integrated water heating device, it is necessary to reasonably design and assemble it according to the structure of each component itself and the working connection between multiple components. This process is also a relatively difficult innovation process. Utility Model Content

[0005] The purpose of the utility model is to provide a dual-energy integrated water heater, aiming to solve the problem that the existing dual-energy water heaters that combine gas heating and heat pump heating are difficult to control and difficult to form an integrated product.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The dual-energy integrated water heating device comprises a water storage tank, a combustion unit and a heat pump unit, the water storage tank being provided with a cold water inlet and a hot water outlet, and is characterized in that the combustion unit comprises a burner and a gas heating heat exchange pipe, the burner being installed above the water storage tank, the gas heating heat exchange pipe being installed in the water storage tank and connected to the burner, and the gas heating heat exchange pipe being connected to a flue gas exhaust pipe; the heat pump unit comprises a compressor, a heat pump heating heat exchanger, an evaporator and a mounting bracket, the compressor, heat pump heating heat exchanger and evaporator being integrated and installed in the mounting bracket, and the mounting bracket being fixedly connected to the outer wall of the water storage tank; a heat pump heating cycle water outlet and a heat pump heating cycle return water outlet are provided on the water storage tank, and the heat pump heating cycle water outlet and the heat pump heating cycle return water outlet are respectively connected to the heat pump heating heat exchanger through pipes.

[0008] As a further preferred embodiment of the present technical solution, the gas heating heat exchange pipe includes a main heat exchange pipe, a circulating heat exchange pipe and a flue gas condensation pipe. A flue gas diversion chamber is provided above the water tank, and a flue gas condensation chamber is provided below the water tank. The upper end of the main heat exchange pipe passes through the water tank and is connected to the combustion unit, and the lower end of the main heat exchange pipe extends to the bottom of the water tank and is connected to the lower end of the circulating heat exchange pipe. The upper end of the circulating heat exchange pipe is connected to the flue gas diversion chamber, and the two ends of the flue gas condensation pipe are respectively connected to the flue gas diversion chamber and the flue gas condensation chamber, and the lower end of the flue gas condensation chamber is connected to the flue gas exhaust pipe.

[0009] As a further preferred embodiment of the present technical solution, it also includes a top-mounted cover and a bottom-mounted cover adapted to the water tank, wherein the top-mounted cover is installed above the flue gas diversion chamber and covers the combustion unit, and a gas heating air inlet is provided on the top-mounted cover; the bottom-mounted cover is installed below the water tank and covers the flue gas condensation chamber and the flue gas exhaust pipe.

[0010] As a further preferred embodiment of the present technical solution, it further includes an outer cylinder, which is sleeved on the water tank and the bottom mounting cover, and the upper end of the outer cylinder is connected to the lower end of the top mounting cover, and the lower end of the outer cylinder is installed with a closed base.

[0011] As a further preferred embodiment of the present technical solution, the upper end surface of the closed base is provided with a plurality of positioning connecting pieces for positioning the bottom mounting cover, and the lower end surface of the closed base is fixedly provided with at least two load-bearing and limiting beams that are parallel to each other and spaced apart.

[0012] As a further preferred embodiment of the present technical solution, the side of the mounting frame connected to the water tank is open, and a plurality of partitions are horizontally arranged in the mounting frame. The plurality of partitions form a corresponding multi-layer mounting space in the mounting frame, and the compressor, heat pump heating exchanger and evaporator are respectively installed in a separate layer of the mounting space.

[0013] As a further preferred embodiment of the present technical solution, the mounting frame includes a back plate, a side plate, a top plate and a bottom plate, and the partition includes a first partition plate, a second partition plate and a third partition plate. A first installation space for installing the gas supply pipe of the combustion unit is formed between the first partition plate and the top plate, a second installation space for installing the evaporator is formed between the second partition plate and the first partition plate, a third installation space for installing the heat pump heating exchanger is formed between the third partition plate and the second partition plate, and a fourth installation space for installing the compressor is formed between the third partition plate and the bottom plate.

[0014] As a further preferred embodiment of the present technical solution, the evaporator is arranged between the first partition and the second partition and is installed close to the back panel. A heat pump air inlet is provided on the side panel corresponding to the second installation space area, and an evaporator fan is installed on the back panel at the installation position corresponding to the evaporator.

[0015] As a further preferred embodiment of the present technical solution, the compressor, heat pump heating heat exchanger and evaporator are connected in a cycle in sequence, the medium outlet end of the compressor is connected to the evaporator and the heat pump heating heat exchanger through a four-way valve, a circulation pump is provided on the connecting pipe between the heat pump heating heat exchanger and the heat pump heating circulation water outlet, and an expansion valve is provided on the connecting pipe between the heat pump heating heat exchanger and the evaporator.

[0016] As a further preferred embodiment of the present technical solution, the water tank is further provided with a safety valve port for automatic pressure relief, a drain valve port for manual drainage, and a cleaning port for cleaning the water tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The combustion unit and the heat pump unit in the present invention are both assembled on the water tank, wherein the combustion unit adopts a top-burning combustion method, and the hot flue gas generated by the combustion of the burner exchanges heat with the water in the water tank through the gas heating heat exchange pipe, while the compressor, heat pump heating heat exchanger and evaporator in the heat pump unit are assembled as a whole through a mounting frame, and the heat pump heating heat exchanger therein realizes heat exchange with the circulating water in the water tank; the overall structure of the two units and the water tank is very compact and highly integrated, which is of great help to form a standardized integrated product for the dual-energy water heating device. On the other hand, the two heating systems use two independent heat exchange systems to exchange heat separately, which do not interfere with each other, and are relatively simple to control. It can also ensure the long-term operation of the heat exchange system and improve the heat exchange efficiency of different heat exchange systems in different heating systems.

[0019] 2. The combustion unit in the present invention adopts a top-burning combustion method. The hot flue gas generated by the combustion of the combustion unit first flows from the upper part of the water tank to the bottom of the water tank through the main heat exchange pipe to realize the first heat exchange, and then flows from the bottom of the water tank to the upper part of the water tank through the circulating heat exchange pipe and enters the flue gas diversion chamber to realize the secondary heat exchange. At this time, the flue gas with residual heat flows from the upper part of the water tank to the lower part of the water tank through the flue gas condensation pipe again and enters the flue gas condensation chamber to realize the second heat exchange. At this time, the flue gas that has completed the heat exchange is finally discharged through the flue gas exhaust pipe, which can realize three heat exchange processes, so that the hot flue gas generated by combustion can fully exchange heat with the water in the water tank, improve the heat exchange efficiency, reduce heat loss and reduce resource waste.

[0020] 3. In order to achieve the overall integration of the device and the aesthetic appearance, the combustion unit in the present invention is also provided with a top-mounted cover and a bottom-mounted cover adapted to the water tank. The top-mounted cover is installed above the flue gas diversion chamber and covers the combustion unit, and a gas heating air inlet is provided on the top-mounted cover; the bottom-mounted cover is installed below the water tank and covers the flue gas condensation chamber and the flue gas exhaust pipe.

[0021] 4. In order to ensure the beauty of the overall appearance of the device and the safety of the water tank, the combustion unit in the present invention is also provided with an outer cylinder, and a closed base is installed at the lower end of the outer cylinder; at the same time, in order to improve the load-bearing capacity of the base and facilitate the transportation and transfer of the device, at least two load-bearing limit beams parallel to each other and arranged at intervals are fixedly installed on the lower end surface of the closed base, and the interval space between the multiple load-bearing limit beams can be used as insertion space for forklift forks. When the entire machine needs to be transported and transferred, the forklift can be controlled to insert its forks into the interval space between the load-bearing limit beams under the closed base, and the load-bearing limit beams play a role in limiting the left and right sliding of the forks to prevent the forks from tipping over when the entire machine is lifted; and in order to facilitate the positioning and installation of the bottom mounting cover, a plurality of positioning connecting pieces for positioning the bottom mounting cover are also provided on the upper end surface of the closed base.

[0022] 5. The heat pump unit in the present invention integrates and assembles the compressor, heat pump heating heat exchanger and evaporator through a mounting frame, and also provides a plurality of partitions in the mounting frame to form a corresponding multi-layer mounting space for the separate assembly of each component. This not only achieves the integration and unification of all components in the mounting frame, improves the structural integration of the heat pump unit, and enables the overall device to be standardized and productized; it also achieves modularization of different components in different mounting spaces, which is convenient for workers to modularly assemble the components and have a clearer understanding of the connections between the components, thus avoiding errors. It also facilitates the systematic management and maintenance of the modular components.

[0023] 6. The heat pump unit in this utility model compresses the low-pressure refrigerant through the compressor and turns it into high-temperature and high-pressure gas to be discharged. The high-temperature and high-pressure refrigerant gas flows through the heat pump heating heat exchanger and transfers its own heat to the circulating water from the water tank that also flows through the heat pump heating heat exchanger. The refrigerant cooled down after heat exchange becomes liquid under the continuous action of pressure, and then enters the evaporator after passing through the expansion valve. The function of the evaporator is that when the outside air flows through the outer surface of the evaporator, the heat contained in it will be absorbed by the evaporator, and the liquid refrigerant entering the evaporator will quickly evaporate into gas under pressure and absorb the evaporation heat. The refrigerant absorbs a large amount of heat in the heat exchanger, and then the refrigerant that has absorbed a certain amount of energy flows back to the compressor and enters the next cycle; at the same time, in order to change the flow direction of the refrigerant when the heat pump unit is defrosting, a four-way valve is set at the medium outlet end of the compressor to connect the evaporator and the heat pump heating heat exchanger; in order to provide sufficient power for the water in the water storage tank to flow to the heat pump heating heat exchanger, a circulating pump is set on the connecting pipe between the heat pump heating heat exchanger and the heat pump heating circulation water outlet; in order to achieve throttling, pressure reduction and flow regulation of the medium after heat exchange when flowing to the evaporator, an expansion valve is set on the connecting pipe between the heat pump heating heat exchanger and the evaporator.

[0024] 7. In order to increase the contact area between the evaporator and the outside air, the heat pump unit in the present invention has the evaporator stuck between the first partition and the second partition, and installed close to the back plate, and a heat pump air inlet is opened on the side panel corresponding to the second installation space area. The outside air enters the second installation space area through the heat pump air inlet and absorbs heat under the action of the evaporator; in order to ensure that the outside air can flow through the evaporator surface in large quantities, an evaporator fan is installed on the back plate at the installation position corresponding to the evaporator. When the evaporator fan is working, it blows air outward, which can speed up the discharge of air in the second installation space, and then the outside air is continuously and quickly sucked in from the heat pump air inlet, realizing rapid air circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0027] Figure 2 for Figure 1 Front projection view of;

[0028] Figure 3 It is a partial perspective structural diagram of the utility model;

[0029] Figure 4 This is a schematic diagram of the specific structure of the combustion unit in the present utility model;

[0030] Figure 5 This is a schematic diagram of the specific structure of the heat pump unit in the utility model;

[0031] Figure 6 for Figure 5 Rear view;

[0032] Figure 7 This is a schematic diagram of the overall workflow of the present invention;

[0033] Among them, 1-water tank, 2-cold water inlet, 3-hot water outlet, 4-burner, 5-gas heating heat exchange pipe, 501-main heat exchange pipe, 502-circulating heat exchange pipe, 503-flue gas condenser, 6-flue gas discharge pipe, 7-compressor, 8-heat pump heating heat exchanger, 9-evaporator, 10-mounting frame, 1001-back plate, 1002-side plate, 1003-top plate, 1004-bottom plate, 11-heat pump heating circulation outlet, 12-heat pump heating circulation return water outlet, 13-flue gas discharge pipe, Gas diversion chamber, 14-smoke condensation chamber, 15-top mounting cover, 16-bottom mounting cover, 17-heat dissipation hole, 18-outer cylinder, 19-closed base, 20-positioning connecting piece, 21-limiting support beam, 22-partition, 2201-first partition, 2202-second partition, 2203-third partition, 23-heat pump air inlet, 24-evaporator fan, 25-four-way valve, 26-circulating pump, 27-expansion valve, 28-safety valve port, 29-drain valve port, 30-cleaning port. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figures 1 to 7 The dual-energy integrated water heating device shown includes a water tank 1, a combustion unit and a heat pump unit. The water tank 1 is provided with a cold water inlet 2 and a hot water outlet 3. The combustion unit includes a burner 4 and a gas heating heat exchange pipe 5. The burner 4 is installed above the water tank 1, and the gas heating heat exchange pipe 5 is installed in the water tank 1 and connected to the burner 4. The gas heating heat exchange pipe 5 is connected to the flue gas exhaust pipe 6; the heat pump unit includes a compressor 7, a heat pump heating heat exchanger 8, an evaporator 9 and a mounting bracket 10. The compressor 7, heat pump heating heat exchanger 8 and evaporator 9 are integrated and installed in the mounting bracket 10, and the mounting bracket 10 is fixedly connected to the outer wall of the water tank 1; the water tank 1 is provided with a heat pump heating cycle water outlet 11 and a heat pump heating cycle return water outlet 12, and the heat pump heating cycle water outlet 11 and the heat pump heating cycle return water outlet 12 are respectively connected to the heat pump heating heat exchanger 8 through pipes.

[0037] The combustion unit and the heat pump unit 2 in the present invention are both assembled on the water tank 1, wherein the combustion unit adopts an upward combustion method, and the hot flue gas generated by the combustion of the burner 4 exchanges heat with the water in the water tank 1 through the gas heating heat exchange pipe 5, and the compressor 7, heat pump heating heat exchanger 8 and evaporator 9 in the heat pump unit are assembled as a whole through the mounting frame 10, and the heat pump heating heat exchanger 8 therein realizes heat exchange with the circulating water in the water tank 1; the overall structure of the two major units and the water tank 1 is very compact and highly integrated, which is of great help to form a standardized integrated product for the dual-energy water heating device. On the other hand, the two heating systems use two independent heat exchange systems to exchange heat separately, and the two do not interfere with each other. Relatively speaking, the control is simpler, and it can also ensure the long-term operation of the heat exchange system and improve the heat exchange efficiency of different heat exchange systems in different heating systems.

[0038] It should be noted that the burner 4 in this embodiment includes a burner body, a combustion chamber, a blower, an air inlet and a gas inlet, etc., and its basic connection mechanism is: the blower, the air inlet and the gas inlet are installed on the outside of the water tank 1, and the blower is connected to the air inlet and the gas inlet; the combustion chamber is installed in the gas heating heat exchange tube 5, and the upper end of the combustion chamber is connected to the blower; since the structure of the burner 4 is not the focus of this technical solution, its specific structure and working principle will not be repeated in this embodiment.

[0039] More specifically, with respect to the combustion unit, the gas heating heat exchange pipe 5 in this embodiment includes a main heat exchange pipe 501, a circulating heat exchange pipe 502 and a flue gas condensation pipe 503. A flue gas diversion chamber 13 is provided above the water tank 1, and a flue gas condensation chamber 14 is provided below the water tank 1. The upper end of the main heat exchange pipe 501 passes through the water tank 1 and is connected to the combustion unit 101. The lower end of the main heat exchange pipe 501 extends to the bottom of the water tank 1 and is connected to the lower end of the circulating heat exchange pipe 502. The upper end of the circulating heat exchange pipe 502 is connected to the flue gas diversion chamber 13, and the two ends of the flue gas condensation pipe 503 are respectively connected to the flue gas diversion chamber 13 and the flue gas condensation chamber 14. The lower end of the flue gas condensation chamber 14 is connected to the flue gas exhaust pipe 6.

[0040] The combustion unit in this embodiment adopts an upper combustion method, and its working principle is as follows: the hot flue gas generated by the combustion of the combustion unit first flows from the upper part of the water tank 1 to the bottom of the water tank 1 through the main heat exchange pipe 501, realizing the first heat exchange, and then flows from the bottom of the water tank 1 to the upper part of the water tank 1 through the circulating heat exchange pipe 502 and enters the flue gas diversion chamber 13, realizing the secondary heat exchange. At this time, the flue gas with residual heat flows again from the upper part of the water tank 1 to the lower part of the water tank 1 through the flue gas condensation pipe 503 and enters the flue gas condensation chamber 14, realizing heat exchange again. At this time, the flue gas that has completed the heat exchange is finally discharged through the flue gas exhaust pipe 6, which can realize three heat exchange processes, so that the hot flue gas generated by combustion and the water in the water tank 1 can fully exchange heat, thereby improving the heat exchange efficiency while reducing heat loss and reducing resource waste.

[0041] Furthermore, in order to ensure uniform heat exchange between the gas heating heat exchange tube 5 and the cold water in the water tank 1 and improve the heat exchange efficiency, this embodiment sets the main heat exchange tube 501 at the center of the water tank 1, and provides a plurality of circulating heat exchange tubes 502 and flue gas condensation tubes 503, and the plurality of circulating heat exchange tubes 502 and flue gas condensation tubes 503 are distributed in an orderly manner around the main heat exchange tube 501. In this embodiment, there are four circulating heat exchange tubes 502 and eight flue gas condensation tubes 503; and in order to ensure that the flue gas at the end of heat exchange and the condensed water generated by heat exchange in the flue gas condensation tube 503 can be discharged faster, the flue gas condensation chamber 14 is set to be funnel-shaped.

[0042] Among them, it should be clarified that in order to adapt to the gradual decrease in the heat contained in the combustion flue gas during the heat exchange process, the diameters of the main heat exchange tube 501, the circulating heat exchange tube 502, and the flue gas condensation tube 503 are also set in a decreasing manner; and it should be noted that in this embodiment, the main heat exchange tube 501, the circulating heat exchange tube 502 and the flue gas condensation tube 503 are all straight tubes, but in more embodiments, while meeting the water storage capacity of the water tank 1, it can also adopt spiral tubes, S tubes, etc.

[0043] More specifically, with respect to the heat pump unit, the compressor 7, the heat pump heating heat exchanger 8 and the evaporator 9 in this embodiment are connected in a cycle in sequence, the medium outlet end of the compressor 7 is connected to the evaporator 9 and the heat pump heating heat exchanger 8 through a four-way valve 25, and a circulating pump 26 for providing power to the circulating water is provided on the connecting pipe between the heat pump heating heat exchanger 8 and the heat pump heating circulation water outlet 11, and an expansion valve 27 for throttling, pressure reduction and flow regulation is provided on the connecting pipe between the heat pump heating heat exchanger 8 and the evaporator 9.

[0044] The working principle of the heat pump unit 1 in this embodiment is as follows: the low-pressure refrigerant is compressed by the compressor 7 and becomes a high-temperature and high-pressure gas and is discharged. The high-temperature and high-pressure refrigerant gas flows through the heat pump heating heat exchanger 8 and transfers its own heat to the circulating water from the water storage tank 1 that also flows through the heat pump heating heat exchanger 8. The refrigerant cooled down after heat exchange becomes liquid under the continuous action of pressure, and then enters the evaporator 9 after passing through the expansion valve 27. The function of the evaporator 9 is that when the outside air flows through the outer surface of the evaporator 9, the heat contained in it will be absorbed by the evaporator 9, and the liquid refrigerant entering the evaporator 9 will quickly evaporate into gas under pressure and absorb a large amount of heat in the evaporator 9. Then the refrigerant that has absorbed a certain amount of energy flows back to the compressor 7 and enters the next cycle.

[0045] Furthermore, in this embodiment, the heat pump heating heat exchanger 8 in the heat pump unit 2 adopts a shell-and-tube heat exchanger, which includes an inner tube and an outer tube. The two ends of the inner tube are respectively connected to the heat pump heating cycle water outlet 11 and the heat pump heating cycle return water outlet 12 on the water storage tank 1 through pipes. The water flowing in the inner tube is the water to be heated, and the two ends of the outer tube are respectively connected to the evaporator 9 and the compressor 7 through pipes. The refrigerant medium for heat exchange flows in the outer tube. It should be noted that the flow direction of the materials in the inner tube and the outer tube is reverse.

[0046] In addition, in order to ensure that the dual-energy integrated water heating device in this embodiment can work normally and safely, a safety valve port 28 for automatic pressure relief and a drain valve port 29 for manual drainage are also provided on the water tank 1. It should be clear that the safety valve port 28 is used to install a safety valve, which automatically opens to relieve pressure when the internal pressure of the water tank 1 is abnormal, and its position is set in the upper area of ​​the water tank 1. The drain valve port 29 is used to install a drain valve, which is mainly used to manually discharge the residual water in the water tank 1, and its position is set in the lower area of ​​the water tank 1; the water storage tank 1 A cleaning port 30 is also provided on the tank 1, which is mainly used for manual cleaning of the inside of the water tank 1; further, temperature sensors are installed at the upper and lower positions of the water tank 1, which are mainly used to detect the water temperature in the upper and lower parts of the water tank 1, so as to control the operation of different heating modules; in order to protect the water tank 1 and the gas heating heat exchange tube 5 and prevent the large amount of water alkali and scale from adhering, an electronic anode and a magnesium rod are also installed on the water tank 1, both of which can inhibit scale, so as to alleviate the corrosion of scale on the water tank 1 and the gas heating heat exchange tube 5, and enhance the thermal insulation effect of the water tank 1.

[0047] Example 2

[0048] This embodiment is a further supplementary solution to embodiment 1. In order to achieve the overall integration of the device and the aesthetic appearance, the combustion unit 1 in this embodiment is also provided with a top mounting cover 15 and a bottom mounting cover 16 adapted to the water tank 1. The top mounting cover 15 is installed above the flue gas diversion chamber 13 and covers the combustion unit. Heat dissipation holes 17 are provided on the top mounting cover 15. In this embodiment, the heat dissipation holes 17 are dense small holes, which are used for heat dissipation of the combustion unit during operation; the bottom mounting cover 16 is installed below the water tank 1 and covers the flue gas condensation chamber 14 and the flue gas exhaust pipe 6.

[0049] Furthermore, in order to ensure the beauty of the overall appearance of the device and the safety of the water tank 1, an outer cylinder 18 is further provided. The outer cylinder 18 is sleeved on the water tank 1 and the bottom mounting cover 16, and the upper end of the outer cylinder 18 is connected to the lower end of the top mounting cover 15, and the lower end of the outer cylinder 18 is installed with a closed base 19; and in order to facilitate the positioning and installation of the bottom mounting cover 16, a plurality of positioning connecting pieces 20 for positioning the bottom mounting cover 16 are further provided on the upper end surface of the closed base 19. At the same time, in order to improve the load-bearing capacity of the base and facilitate the For transportation and transfer, at least two load-bearing and limiting beams 21 parallel to each other and spaced apart are fixedly installed on the lower end surface of the closed base 19. In this embodiment, there are two load-bearing and limiting beams 21. The space between the two load-bearing and limiting beams 21 can be used as an insertion space for the forklift forks. When the entire machine needs to be transported and transferred, the forklift can be controlled to insert its forks into the space between the load-bearing and limiting beams 21 under the closed base 19. The load-bearing and limiting beams 21 limit the left and right sliding of the forks to prevent the forks from tipping over when the entire machine is lifted.

[0050] It can be foreseen that, in order to facilitate the user to check the water temperature in the water tank 1 in real time, a display screen is further provided on the top mounting cover 15 in this embodiment, which is mainly used to receive and display the water temperature signal.

[0051] Example 3

[0052] This embodiment is a further supplement to embodiment 1. The side of the mounting frame 10 in this embodiment that is connected to the water tank 1 is open, and a plurality of partitions 22 are horizontally arranged in the mounting frame 10. The plurality of partitions 22 form a corresponding multi-layer installation space in the mounting frame 10, and the compressor 7, heat pump heating heat exchanger 8 and evaporator 9 are respectively installed in a separate layer of the installation space.

[0053] More specifically, the mounting frame 10 includes a back panel 1001, side panels 1002, a top panel 1003, and a bottom panel 1004. The two sides of the back panel 1001 are connected to the two side panels 1002 via a column, and the top panel 1003 and the bottom panel 1004 are connected to the back panel 1001, the side panels 1002, and the columns via screws. In order to reduce the production difficulty of the mounting frame 10, the back panel 1001 and the side panels 1002 are set as an upper and lower two-section type, and the upper and lower parts are clamped with each other; the partition 22 includes a first partition 2201, a second partition 2202, and a third partition Plate 2203, a first installation space for installing the air inlet pipe of the combustion unit is formed between the first partition plate 2201 and the top plate 1003, and accordingly, an air inlet hole is opened on the side plate 1002 of the first installation space; a second installation space for installing the evaporator 9 is formed between the second partition plate 2202 and the first partition plate 2201; a third installation space for installing the heat pump heating heat exchanger 8 is formed between the third partition plate 2203 and the second partition plate 2202; a fourth installation space for installing the compressor 7 is formed between the third partition plate 2203 and the bottom plate 1004.

[0054] In this embodiment, the mounting frame 10 is rectangular as a whole and is attached to the water tank 1. In order to facilitate the installation of the mounting frame 10 and the overall aesthetics of the device, the connecting side of the mounting frame 10 and the water tank 1 is set to a shape that is compatible with the outer wall of the water tank 1. The specific setting of this embodiment is an arc shape. Of course, those skilled in the art can design it into other shapes according to actual conditions.

[0055] In this embodiment, the compressor 7, the heat pump heating heat exchanger 8 and the evaporator 9 are integrated and assembled by the mounting frame 10, and a plurality of partitions 22 are provided in the mounting frame 10 to form a corresponding multi-layer mounting space for the separate assembly of each component. This not only achieves the integration and unification of all components in the mounting frame, improves the structural integration of the heat pump unit, and enables the overall device to be standardized and commercialized; it also achieves the modularization of different components in different mounting spaces, which is convenient for workers to modularly assemble the components and has a clearer understanding of the connections between the components, thus avoiding errors. At the same time, it also facilitates the systematic management and maintenance of the modular components.

[0056] Furthermore, in order to increase the contact area between the evaporator 9 and the outside air, the heat pump unit in this embodiment is provided with the evaporator 9 between the first partition plate 2201 and the second partition plate 2202, and is installed close to the back plate 1001, and a heat pump air inlet 23 is provided on the side plate 1002 corresponding to the second installation space area. The outside air enters the second installation space area through the heat pump air inlet 23 and absorbs heat under the action of the evaporator 9; in order to ensure that the outside air can flow through the surface of the evaporator 9 in large quantities, a heat pump air inlet 23 is provided on the back plate 1001 corresponding to the evaporator 9. An evaporator fan 23 is installed at the installation position. More specifically, a fan installation port is provided on the back panel 1001 at the installation position corresponding to the evaporator 9. The evaporator fan 23 is installed at the fan installation port through a fan mounting seat. Both ends of the fan mounting seat are fixed to the two columns in the mounting frame 10 by screws. When the evaporator fan 23 is working, it blows air outward, which can speed up the discharge of air in the second installation space, and then the outside air is continuously and quickly sucked in from the heat pump air inlet 23, thereby realizing rapid air circulation.

[0057] In addition, it can be foreseen that the heat pump heating heat exchanger 8 is fixedly mounted on the third partition 2203 through the heat exchanger base, and the compressor 7 is fixedly mounted on the base plate 1004 through the compressor base. The connecting pipes between the compressor 7, the heat pump heating heat exchanger 8 and the evaporator 9 and the various electrical components installed in the pipes are all connected and fixed by conventional means and assembled in the corresponding installation space.

[0058] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dual-energy integrated water heating device, comprising a water storage tank (1), a combustion unit and a heat pump unit, wherein the water storage tank (1) is provided with a cold water inlet (2) and a hot water outlet (3), and is characterized in that: The combustion unit comprises a burner (4) and a gas heating heat exchange pipe (5), wherein the burner (4) is installed above the water storage tank (1), the gas heating heat exchange pipe (5) is installed in the water storage tank (1) and connected to the burner (4), and the gas heating heat exchange pipe (5) is connected to a flue gas exhaust pipe (6); the heat pump unit comprises a compressor (7), a heat pump heating heat exchanger (8), an evaporator (9) and a mounting frame (10), wherein the compressor (7), the heat pump heating heat exchanger (8) and the evaporator (9) are integrated and installed in the mounting frame (10), and the mounting frame (10) is fixedly connected to the outer wall of the water storage tank (1); a heat pump heating circulation water outlet (11) and a heat pump heating circulation water return port (12) are provided on the water storage tank (1), and the heat pump heating circulation water outlet (11) and the heat pump heating circulation water return port (12) are respectively connected to the heat pump heating heat exchanger (8) through pipes.

2. The dual-energy integrated water heater according to claim 1, characterized in that: The gas heating heat exchange pipe (5) includes a main heat exchange pipe (501), a circulating heat exchange pipe (502) and a flue gas condensation pipe (503); a flue gas diversion chamber (13) is provided above the water storage tank (1); a flue gas condensation chamber (14) is provided below the water storage tank (1); the upper end of the main heat exchange pipe (501) passes through the water storage tank (1) and is connected to the combustion unit; the lower end of the main heat exchange pipe (501) extends to the bottom of the water storage tank (1) and is connected to the lower end of the circulating heat exchange pipe (502); the upper end of the circulating heat exchange pipe (502) is connected to the flue gas diversion chamber (13); the two ends of the flue gas condensation pipe (503) are respectively connected to the flue gas diversion chamber (13) and the flue gas condensation chamber (14); the lower end of the flue gas condensation chamber (14) is connected to the flue gas exhaust pipe (6).

3. The dual-energy integrated water heater according to claim 2, characterized in that: The utility model also includes a top-mounted cover (15) and a bottom-mounted cover (16) adapted to the water storage tank (1), wherein the top-mounted cover (15) is mounted above the flue gas diversion chamber (13) and covers the combustion unit, and heat dissipation holes (17) are provided on the top-mounted cover (15); and the bottom-mounted cover (16) is mounted below the water storage tank (1) and covers the flue gas condensation chamber (14) and the flue gas exhaust pipe (6).

4. The dual-energy integrated water heater according to claim 3, characterized in that: The invention also includes an outer cylinder (18), which is sleeved on the water storage tank (1) and the bottom mounting cover (16), and the upper end of the outer cylinder (18) is connected to the lower end of the top mounting cover (15), and the lower end of the outer cylinder (18) is installed with a closed base (19).

5. The dual-energy integrated water heater according to claim 4, characterized in that: The upper end surface of the closed base (19) is provided with a plurality of positioning connecting pieces (20) for positioning the bottom mounting cover (16), and the lower end surface of the closed base (19) is fixedly provided with at least two mutually parallel and spaced load-bearing limiting beams (21).

6. The dual-energy integrated water heater according to claim 1, characterized in that: The side of the mounting frame (10) connected to the water storage tank (1) is open, and a plurality of partitions (22) are horizontally arranged in the mounting frame (10). The plurality of partitions (22) form corresponding multi-layer mounting spaces in the mounting frame (10), and the compressor (7), heat pump heating heat exchanger (8), and evaporator (9) are respectively installed in a single layer of mounting space.

7. The dual-energy integrated water heater according to claim 6, characterized in that: The mounting frame (10) includes a back plate (1001), a side plate (1002), a top plate (1003) and a bottom plate (1004); the partition (22) includes a first partition (2201), a second partition (2202) and a third partition (2203); a first installation space for installing the air supply pipe of the combustion unit is formed between the first partition (2201) and the top plate (1003); a second installation space for installing the evaporator (9) is formed between the second partition (2202) and the first partition (2201); a third installation space for installing the heat pump heating heat exchanger (8) is formed between the third partition (2203) and the second partition (2202); and a fourth installation space for installing the compressor (7) is formed between the third partition (2203) and the bottom plate (1004).

8. The dual-energy integrated water heater according to claim 7, characterized in that: The evaporator (9) is clamped between the first partition (2201) and the second partition (2202), and is installed close to the back panel (1001); a heat pump air inlet (23) is opened on the side panel (1002) corresponding to the second installation space area, and an evaporator fan (24) is installed on the back panel (1001) at a location corresponding to the installation position of the evaporator (9).

9. The dual-energy integrated water heater according to claim 1, characterized in that: The compressor (7), the heat pump heating heat exchanger (8) and the evaporator (9) are connected in a circular manner in sequence. The medium outlet end of the compressor (7) is connected to the evaporator (9) and the heat pump heating heat exchanger (8) through a four-way valve (25). A circulation pump (26) is provided on the connecting pipe between the heat pump heating heat exchanger (8) and the heat pump heating circulation water outlet (11). An expansion valve (27) is provided on the connecting pipe between the heat pump heating heat exchanger (8) and the evaporator (9).

10. The dual-energy integrated water heater according to any one of claims 1 to 9, characterized in that: The water storage tank (1) is also provided with a safety valve port (28) for automatic pressure relief, a drainage valve port (29) for manual drainage, and a cleaning port (30) for cleaning the water tank.

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