Hot water equipment and gas hot water heating furnace

Abstract

The gas hot water heating stove comprises the hot water device, and the hot water device comprises a machine shell, a gas heating device, a gas heating device, a gas heating device, a gas heating device and a gas heating device, and the machine shell is provided with a containing cavity and an access hole communicated with the containing cavity; the valve body assembly is arranged in the accommodating cavity; the heat exchanger is arranged in the containing cavity, the heat exchanger is detachably connected with the valve body assembly, and the heat exchanger is correspondingly arranged at the access hole, so that the heat exchanger can be moved into or out of the containing cavity through the access hole; and the cover plate is used for opening or covering the access hole. According to the scheme, the convenience of maintenance and replacement is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot water equipment technology, and in particular to a hot water equipment and a gas-fired hot water heating boiler. Background Technology

[0002] In the existing technology, when repairing or replacing the plate heat exchanger in existing hot water equipment, it is necessary to remove the gas-fired heating and hot water boiler shell, water pump, gas proportional valve, inlet and outlet water valves before disassembling the plate heat exchanger. The repair time is long and the reinstallation is difficult. Utility Model Content

[0003] The main purpose of this utility model is to provide a hot water equipment and a gas-fired hot water heating boiler, which aims to improve the convenience of maintenance and operation.

[0004] To achieve the above objectives, the present invention provides a hot water device comprising:

[0005] The housing has a receiving cavity and an inspection port communicating with the receiving cavity;

[0006] The valve body assembly is disposed within the accommodating cavity;

[0007] A heat exchanger is disposed within the receiving cavity, the heat exchanger is detachably connected to the valve body assembly, the heat exchanger is correspondingly located at the inspection port, and can be moved into or out of the receiving cavity through the inspection port; and

[0008] A cover plate is used to open or close the access port.

[0009] In one embodiment, the heat exchanger and the valve body assembly are respectively provided with a first mounting hole, and the hot water equipment further includes a first fastener, which passes through the first mounting hole to connect the heat exchanger to the valve body assembly.

[0010] In one embodiment, the valve body assembly includes an inlet valve and an outlet valve, the inlet valve having an inlet and the outlet valve having an outlet, the heat exchanger having an inlet connector and an outlet connector, the inlet connector being inserted into the inlet and the outlet connector being inserted into the outlet.

[0011] In one embodiment, the housing includes a housing body and a bottom tray mounted on the bottom of the housing body. The housing body and the bottom tray enclose the receiving cavity. The bottom tray is provided with the inspection port. The heat exchanger is disposed close to the bottom tray.

[0012] In one embodiment, the outer edge of the access port is provided with a mounting part, the mounting part is arranged around the periphery of the access port, and the cover plate is movably installed on the mounting part for opening or closing the access port.

[0013] In one embodiment, the mounting portion has a recessed cavity on the side away from the receiving cavity that faces the opening of the cover plate, and the cover plate is at least partially received in the recessed cavity.

[0014] In one embodiment, the bottom tray has a raised rib on the side opposite to the shell body. The raised rib is arranged around the outer periphery of the access port. The area between the raised rib and the edge of the access port forms the mounting part. The cover plate is installed on the mounting part, and the raised rib surrounds the outer periphery of the cover plate.

[0015] In one embodiment, the cover plate and the mounting portion are detachably connected.

[0016] In one embodiment, the mounting portion and the cover plate are provided with corresponding second mounting holes, and the hot water equipment further includes a second fastener, which passes through the second mounting hole to lock the cover plate to the mounting portion.

[0017] In one embodiment, the heat exchanger is configured as a plate heat exchanger.

[0018] In one embodiment, the present invention also proposes a gas-fired hot water heating boiler, including the hot water equipment described above.

[0019] This utility model relates to the design of a hot water equipment, characterized by a casing, a valve assembly, and a heat exchanger. The casing contains a cavity to house the various components. An inspection port communicating with the cavity is provided on the casing for convenient internal inspection and maintenance. The valve assembly, located within the cavity, controls the inflow and outflow of water. The heat exchanger, also located within the cavity, is positioned corresponding to the inspection port. The heat exchanger is detachably connected to the valve assembly and can be moved into or out of the cavity through the inspection port. This detachable connection facilitates internal inspection and replacement, reducing maintenance time and costs. Operation through the inspection port allows for internal work without disassembling the entire equipment, minimizing potential safety hazards during disassembly and reassembly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1A schematic diagram of the structure of an embodiment of the hot water device provided by this utility model;

[0022] Figure 2 A schematic diagram of another embodiment of the hot water equipment provided by this utility model;

[0023] Figure 3 A schematic diagram of another embodiment of the hot water device provided by this utility model;

[0024] Figure 4 A schematic diagram of another embodiment of the hot water device provided by this utility model;

[0025] Figure 5 A partial structural cross-sectional view of an embodiment of the hot water device provided by this utility model;

[0026] Figure 6 A schematic diagram of the structure of an embodiment of the cover plate provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 10. Housing; 11. Inspection port; 12. Housing body; 13. Bottom tray; 14. Mounting part; 15. Rib; 20. Valve body assembly; 21. Inlet valve; 22. Outlet valve; 23. Inlet; 24. Outlet; 30. Heat exchanger; 31. Inlet connector; 32. Outlet connector; 40. Cover plate.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a hot water equipment and a gas-fired hot water heating boiler.

[0034] This utility model provides a hot water device that optimizes the installation relationship between the casing and the cover. With a specially designed inspection port on the casing and a cover plate covering the inspection port, the cover plate can be opened when internal inspection or maintenance is required, and then closed after the operation is completed. Therefore, maintenance work can be carried out without fully exposing the internal parts of the device. This not only protects other internal components from damage, but also reduces the risk of maintenance personnel coming into contact with live parts, thus improving operational safety.

[0035] Hot water equipment includes, but is not limited to, wall-mounted boilers or water heaters. Taking gas-fired heating and hot water boilers as an example, these are common household heating devices that can be directly installed on the wall, saving space and facilitating installation. Gas-fired heating and hot water boilers are commonly used to provide domestic hot water and central heating, and are widely used in home appliances. Traditionally, repairing or replacing plate heat exchangers requires disassembling the boiler casing, water pump, gas proportional valve, and inlet / outlet valves before removing the plate heat exchanger. This process is time-consuming and difficult to reinstall. Furthermore, repairing or replacing plate heat exchangers may pose a risk of damaging other components.

[0036] The gas-fired heating and hot water boiler includes a casing that protects internal components and has an aesthetically pleasing appearance. The burner is the core component that generates heat and can use fuels such as natural gas, liquefied petroleum gas (LPG), or diesel. A heat exchanger transfers the heat generated by combustion to water or other heat transfer media. A water pump propels water through the system, ensuring hot water circulates to all areas requiring heating. An expansion tank absorbs water volume expansion caused by temperature changes, preventing excessive system pressure. A controller / control panel is used to set the temperature, monitor operating status, and diagnose faults. A flue pipe discharges exhaust gases after combustion. Inlet and outlet pipes connect the water supply system to radiators or underfloor heating pipes. By employing this utility model of hot water equipment, a specially designed inspection port on the casing and a cover installed at the inspection port allow for easy access during internal inspections or maintenance. The cover can be opened, the operation completed, and then closed again. Therefore, maintenance work can be performed without fully exposing the internal components, protecting other internal components from damage and reducing the risk of maintenance personnel contacting live parts, thus improving operational safety. The following mainly illustrates the implementation methods of this hot water equipment.

[0037] Reference Figures 1-6 In this embodiment of the utility model, a hot water device includes:

[0038] The housing 10 has a receiving cavity and an inspection port 11 communicating with the receiving cavity;

[0039] Valve body assembly 20 is disposed within the accommodating cavity;

[0040] A heat exchanger 30 is disposed in the accommodating cavity. The heat exchanger 30 is detachably connected to the valve body assembly 20. The heat exchanger 30 is correspondingly disposed at the inspection port 11 and can be moved into or out of the accommodating cavity through the inspection port 11.

[0041] Cover plate 40 is used to open or close the access port 11.

[0042] This utility model relates to a design scheme for a hot water equipment. The main features of this scheme include the following aspects: The casing 10 is the external structure of the equipment, with an internal cavity for installing internal components and an inspection port 11 connected to the cavity for easy maintenance and inspection. The valve body assembly 20 is a key component installed within the cavity, responsible for controlling the direction and flow rate of water or hot water. The heat exchanger 30 is also located within the cavity and is detachably connected to the valve body assembly 20. The heat exchanger 30 is positioned close to the inspection port 11, allowing for easy movement in and out, greatly improving the convenience of maintenance and replacement. A cover plate 40 covers the inspection port 11. When internal inspection or maintenance is required, the cover plate 40 can be opened, closed afterward, ensuring the safety and aesthetics of the equipment. Because the heat exchanger 30 can be directly moved in and out through the inspection port 11 without disassembling the entire equipment or multiple components, this greatly simplifies the maintenance process and reduces maintenance time and costs. This is particularly important for commercial hot water systems, as it reduces downtime due to maintenance, ensuring business continuity. The specially designed access port 11 and cover 40 allow maintenance work to be performed without fully exposing the internal components, protecting other internal components from damage and reducing the risk of maintenance personnel coming into contact with live parts, thus improving operational safety and reducing costs. Users or technicians can more easily perform regular inspections and cleaning, such as descaling or replacing damaged parts, which helps extend the equipment's lifespan and maintain efficient operation. The removable heat exchanger 30 design allows for the selection of different heat exchanger models for various application scenarios to adapt to different heat load requirements or water quality conditions, enabling more personalized solutions. The design of directly moving the heat exchanger 30 into or out through the access port 11 simplifies the maintenance process and brings several advantages, including reduced maintenance time, lower maintenance costs, improved safety, enhanced equipment reliability, and a better user experience.

[0043] Reference Figures 1-6 In this embodiment of the present invention, the heat exchanger 30 and the valve body assembly 20 are respectively provided with first mounting holes, and the hot water equipment further includes a first fastener, which passes through the first mounting hole to connect the heat exchanger 30 to the valve body assembly 20.

[0044] Both the heat exchanger 30 and the valve body assembly 20 are provided with first mounting holes. A first fastener connects the heat exchanger 30 to the valve body assembly 20 through the first mounting holes, achieving both fixation and sealing. Specifically, the access port 11 is opened, the heat exchanger 30 is placed in a predetermined position on the valve body assembly 20, aligned with the first mounting holes on the heat exchanger 30 and the valve body assembly 20, and the first fastener is passed through the first mounting holes to fix the heat exchanger 30 to the valve body assembly 20. The cover plate 40 of the access port 11 is then closed. The cover plate 40 of the access port 11 is opened, the first fastener is loosened, and it is removed from the first mounting hole. The heat exchanger 30 is then removed from the valve body assembly 20, and the cover plate 40 of the access port 11 is closed again. The first fastener enables a detachable connection between the heat exchanger 30 and the valve body assembly 20, allowing for quick and convenient replacement or maintenance of the heat exchanger 30 without disassembling the entire device. The design of the first mounting hole ensures precise alignment of the heat exchanger 30 and the valve body assembly 20 during installation, avoiding leaks or other problems caused by positional deviations. Understandably, the first fastener can have various structures, some common ones including: bolts and nuts: the bolt passes through the first mounting hole, and then the nut is tightened for fixation. This structure is simple, reliable, and widely used in various mechanical connections. Alternatively, threaded screws can be used directly, passing through the first mounting hole and screwed into the threaded hole on the valve body assembly 20. This structure is suitable for applications requiring frequent disassembly and assembly, and is easy to operate. Clip-on fasteners can also be used, fixing the heat exchanger 30 to the valve body assembly 20 through a snap-on structure. This structure allows for very quick installation and disassembly, suitable for applications requiring rapid replacement. Quick-release couplings can also be used, allowing for quick connection and separation through rotation or push-pull methods. This structure is suitable for applications requiring frequent disassembly and assembly and demanding rapid response.

[0045] Reference Figures 1-6 In this embodiment of the present invention, the valve body assembly 20 includes an inlet valve 21 and an outlet valve 22. The inlet valve 21 has an inlet 23, and the outlet valve 22 has an outlet 24. The heat exchanger 30 has an inlet connector 31 and an outlet connector 32. The inlet connector 31 is inserted into the inlet 23, and the outlet connector 32 is inserted into the outlet 24.

[0046] The plug-in design allows for quick and easy connection or disconnection of the inlet connector 31 and outlet connector 32 of the heat exchanger 30 to the inlet port 23 of the inlet valve 21 and the outlet port 24 of the outlet valve 22. This enables rapid operation when the heat exchanger 30 needs replacement or repair, reducing maintenance time and costs. The plug-in design allows for quick and easy connection and disconnection, which is crucial for equipment requiring frequent maintenance and replacement. Traditional threaded connections or other fixing methods often require more time and tools, while the plug-in design significantly improves work efficiency. Plug-in designs typically have clear directional and positioning functions, reducing problems caused by improper installation. For example, plug-in connectors often have guide grooves or markings to ensure correct insertion direction and avoid reverse or misaligned connections. Understandably, plug-in designs are usually equipped with sealing rings or gaskets to ensure a tight seal at the connection, preventing water or steam leakage. This not only improves equipment reliability but also reduces repair and maintenance costs due to leaks.

[0047] Reference Figures 1-6 In this embodiment of the present invention, the housing 10 includes a housing body 12 and a bottom tray 13 installed at the bottom of the housing body 12. The housing body 12 and the bottom tray 13 enclose the cavity to form the receiving cavity. The bottom tray 13 is provided with the inspection port 11. The heat exchanger 30 is disposed close to the bottom tray 13.

[0048] The shell body 12 constitutes the main body of the equipment, providing external protection and internal space. A bottom tray 13 is mounted on the bottom of the shell body 12, forming a receiving cavity together with the shell body 12. An access port 11 is located on the bottom tray 13 for convenient internal inspection and maintenance. The heat exchanger 30 is positioned near the bottom tray 13 for easy access and removal via the access port 11. Specifically, the installation process requires opening the cover 40 of the access port 11. The heat exchanger 30 is placed into the receiving cavity through the access port 11 and positioned near the bottom tray 13. The inlet connector 31 and outlet connector 32 of the heat exchanger 30 are connected to the inlet 23 of the inlet valve 21 and the outlet 24 of the outlet valve 22, respectively. The heat exchanger 30 is secured to the valve body assembly 20 using a first fastener. The cover 40 of the access port 11 is then closed. The disassembly process involves opening the cover 40 of the access port 11. Loosen the first fastener and remove the heat exchanger 30 from the valve body assembly 20. Pull the inlet connector 31 and outlet connector 32 of the heat exchanger 30 out of the inlet port 23 of the inlet valve 21 and the outlet port 24 of the outlet valve 22. Remove the heat exchanger 30 from the receiving cavity through the access port 11. Close the cover 40 of the access port 11. This design, placing the heat exchanger 30 near the bottom tray 13, fully utilizes the internal space of the equipment, making the structure more compact and reducing the footprint. Regular inspection and maintenance can be easily performed through the access port 11, allowing for timely detection and resolution of potential problems, improving equipment reliability and service life.

[0049] Reference Figures 1-6 In this embodiment of the present invention, the outer edge of the inspection port 11 is provided with an installation part 14, the installation part 14 is arranged around the periphery of the inspection port 11, and the cover plate 40 is movably installed on the installation part 14 for opening or closing the inspection port 11.

[0050] Access port 11 is located on the base tray 13 for convenient internal inspection and maintenance of the equipment. Mounting section 14 is located on the outer edge of access port 11, surrounding it and providing a mounting position for cover plate 40. Cover plate 40 is movably mounted on mounting section 14, allowing access port 11 to be opened or closed, protecting internal components and maintaining the clean appearance of the equipment. Specifically, the fixing devices of cover plate 40, such as latches and screws, are unlocked. Cover plate 40 is lifted or pushed open from mounting section 14, exposing access port 11. During inspection or replacement, internal inspection or replacement operations are performed through access port 11, such as replacing heat exchanger 30 or cleaning internal components. It is understood that mounting section 14 can be a flange structure, with a flange around the outer edge of access port 11, into which cover plate 40 can be embedded and secured by screws or clips. This structure is simple, reliable, and widely used in various equipment. It can also be a snap-fit ​​structure, with a snap-fit ​​groove on the mounting part 14 and a corresponding snap-fit ​​on the cover plate 40, enabling quick installation and removal. Alternatively, it can be a magnetic structure, with a magnet on the mounting part 14 and a corresponding metal piece on the cover plate 40, securing the cover plate 40 through magnetic attraction. By setting the mounting part 14 on the outer edge of the inspection port 11 and movably mounting the cover plate 40 on the mounting part 14, this design not only protects the internal components of the equipment, improving its safety and aesthetics, but also facilitates inspection and maintenance operations.

[0051] Reference Figures 1-6 In this embodiment of the present invention, the mounting part 14 is provided with a recessed cavity on the side away from the receiving cavity, which is open toward the cover plate 40, and the cover plate 40 is at least partially received in the recessed cavity.

[0052] The recessed design allows the cover plate 40 to better fit the access port 11. This increased contact area between the cover plate 40 and the access port 11 enhances sealing and prevents external contaminants such as dust and moisture from entering the equipment. The recess provides space to accommodate the cover plate 40, making it more stable when closed and less prone to loosening or falling off. Simultaneously, the recess provides a guiding function, helping users to accurately place the cover plate 40 back in its original position. Understandably, the recess can be designed in a circular, square, or other suitable shape to match the shape of the cover plate 40. The depth of the recess should be moderate, accommodating a portion of the cover plate 40 without being too deep to cause operational inconvenience. The edges of the recess can be chamfered or rounded to reduce friction and wear, extending its service life.

[0053] Reference Figures 1-6 In this embodiment of the present invention, the bottom tray 13 is provided with a protruding rib 15 on the side opposite to the shell body 12. The protruding rib 15 is arranged around the outer periphery of the inspection port 11. The area between the protruding rib 15 and the edge of the inspection port 11 forms the mounting part 14. The cover plate 40 is installed on the mounting part 14, and the protruding rib 15 surrounds the outer periphery of the cover plate 40.

[0054] The mounting section 14 is formed by the raised rib 15 and the edge of the access port 11, creating a ring-shaped mounting area. The raised rib 15 and the edge of the access port 11 enclose the mounting section 14, allowing the cover plate 40 to better fit the access port 11, increasing sealing and preventing dust, moisture, and other external contaminants from entering the equipment. The raised rib 15 provides a stable support structure, making the cover plate 40 more secure when closed, less prone to loosening or falling off. The design of the raised rib 15 and the mounting section 14 allows the cover plate 40 to be easily opened and closed, reducing operational complexity and improving maintenance efficiency. Simultaneously, the raised rib 15 provides a guiding function, helping the user to accurately place the cover plate 40 back in its original position. Understandably, the raised rib 15 can be designed as a circle, square, or other suitable shape to match the shape of the access port 11. The height of the raised rib 15 should be moderate, providing sufficient support without being too high to affect the installation and removal of the cover plate 40. The rib 15 can be made of the same material as the bottom tray 13 to ensure the strength and durability of the structure.

[0055] Reference Figures 1-6 In this embodiment of the utility model, the cover plate 40 and the mounting part 14 are detachably connected.

[0056] Unlock the fixing devices of the cover plate 40, such as latches and screws. Remove the cover plate 40 from the mounting part 14 to expose the access port 11. Perform internal maintenance or replacement operations through the access port 11, such as replacing the heat exchanger 30 or cleaning internal components. The detachable connection allows the cover plate 40 to be easily removed and installed, facilitating internal maintenance and replacement operations and reducing maintenance time and costs. The detachable connection allows internal operations to be performed without disassembling the entire device, reducing potential safety hazards during disassembly and reassembly. Understandably, the detachable connection can be designed with sealing strips or gaskets to ensure a tight seal between the cover plate 40 and the access port 11, preventing dust, moisture, and other external contaminants from entering the device. By designing the cover plate 40 and the mounting part 14 as a detachable connection, this design not only improves the efficiency of equipment maintenance and replacement but also enhances the safety and sealing of the equipment, while making operation more convenient. It is understandable that the cover plate 40 and the mounting part 14 are provided with interlocking latches, which can be used to quickly install and remove the cover plate 40 by pressing or rotating; alternatively, the cover plate 40 and the mounting part 14 are provided with screw holes for fixing with screws; alternatively, the cover plate 40 and the mounting part 14 are provided with interlocking buckles, which can be used to quickly install and remove the cover plate 40 by pressing or pushing or pulling; alternatively, the cover plate 40 and the mounting part 14 are provided with magnets for fixing by magnetic attraction.

[0057] Reference Figures 1-6 In this embodiment of the present invention, the mounting part 14 and the cover plate 40 are respectively provided with second mounting holes. The hot water equipment also includes a second fastener, which passes through the second mounting hole to lock the cover plate 40 to the mounting part 14.

[0058] Both the mounting section 14 and the cover plate 40 are provided with second mounting holes. A second fastener connects the cover plate 40 to the mounting section 14 through the second mounting holes, achieving both fixation and sealing. Specifically, by loosening the second fastener and removing it from the second mounting hole, the cover plate 40 is removed from the mounting section 14, and the cover plate 40 of the access port 11 is closed. The second fastener enables a detachable connection between the cover plate 40 and the mounting section 14, allowing for quick and convenient replacement or maintenance of the heat exchanger 30 without disassembling the entire device. The design of the second mounting hole ensures precise alignment of the cover plate 40 and the mounting section 14 during installation, preventing leaks or other problems caused by positional deviations. Understandably, the second fastener can have various structures, some common ones including: bolts and nuts: the bolt passes through the second mounting hole, and then the nut is tightened for fixation. This structure is simple, reliable, and widely used in various mechanical connections. Alternatively, a threaded screw can be used directly, passing through the second mounting hole and screwed into the threaded hole on the mounting section 14. This structure is suitable for applications requiring frequent disassembly and assembly, and is easy to operate. Clip-on fasteners can also be used, allowing the cover plate 40 to be installed on the mounting part 14 via a snap-on mechanism. This structure allows for very quick installation and removal, suitable for applications requiring rapid replacement. Quick-release couplings can also be used, enabling quick connection and separation via rotation or push-pull. This structure is suitable for applications requiring frequent disassembly and assembly and demanding rapid response.

[0059] Reference Figures 1-6 In this embodiment of the present invention, the heat exchanger is configured as a plate heat exchanger.

[0060] Plate heat exchangers are chosen for use in hot water systems primarily due to their advantages such as high-efficiency heat transfer, compact structure, ease of maintenance, strong adaptability, energy saving, and flexibility. These characteristics make plate heat exchangers an ideal choice for hot water systems, meeting users' needs for efficient, reliable, and convenient heat exchange.

[0061] This utility model also proposes a gas-fired hot water heating boiler, including the hot water equipment described above. The specific structure of the hot water equipment is as described in the above embodiments. Since this gas-fired hot water heating boiler adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hot water device, characterized in that, include: The housing has a receiving cavity and an inspection port communicating with the receiving cavity; The valve body assembly is disposed within the accommodating cavity; A heat exchanger is disposed in the accommodating cavity. The heat exchanger is detachably connected to the valve body assembly. The heat exchanger is correspondingly disposed at the inspection port and can be moved into or out of the accommodating cavity through the inspection port. as well as A cover plate is used to open or close the access port.

2. The hot water equipment as described in claim 1, characterized in that, The heat exchanger and the valve body assembly are respectively provided with a first mounting hole. The hot water equipment also includes a first fastener, which passes through the first mounting hole to connect the heat exchanger to the valve body assembly.

3. The hot water equipment as described in claim 1, characterized in that, The valve body assembly includes an inlet valve and an outlet valve. The inlet valve has an inlet, and the outlet valve has an outlet. The heat exchanger has an inlet connector and an outlet connector. The inlet connector is inserted into the inlet, and the outlet connector is inserted into the outlet.

4. The hot water equipment as described in claim 1, characterized in that, The housing includes a housing body and a bottom tray installed at the bottom of the housing body. The housing body and the bottom tray enclose the receiving cavity. The bottom tray is provided with the inspection port. The heat exchanger is located close to the bottom tray.

5. The hot water equipment as described in claim 4, characterized in that, The outer edge of the inspection port is provided with an installation part, which is arranged around the periphery of the inspection port. The cover plate is movably installed on the installation part for opening or closing the inspection port.

6. The hot water equipment as described in claim 5, characterized in that, The mounting portion has a recessed cavity on the side away from the receiving cavity, which faces the opening of the cover plate, and the cover plate is at least partially received in the recessed cavity; or The bottom tray has a raised rib on the side opposite to the shell body. The raised rib is arranged around the outer periphery of the inspection port. The area between the raised rib and the edge of the inspection port forms the mounting part. The cover plate is installed on the mounting part, and the raised rib surrounds the outer periphery of the cover plate.

7. The hot water equipment as described in claim 5, characterized in that, The cover plate and the mounting part are detachably connected.

8. The hot water equipment as described in claim 5, characterized in that, The mounting part and the cover plate are respectively provided with second mounting holes. The hot water equipment also includes a second fastener, which passes through the second mounting hole to lock the cover plate to the mounting part.

9. The hot water equipment as described in any one of claims 1 to 8, characterized in that, The heat exchanger is configured as a plate heat exchanger.

10. A gas-fired hot water heating boiler, characterized in that, Including the hot water equipment as described in any one of claims 1 to 9.

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