Small size internal circulation water heater

Abstract

This utility model relates to the field of water heaters, and in particular to a small-sized internal circulation water heater. The small-sized internal circulation water heater includes a shell with an opening on one side. A panel is located at the opening. A burner and a heat exchanger are housed inside the shell, with the heat exchanger positioned above the burner. A first circuit board and a second circuit board are also located inside the shell. A display is located on the inner side of the panel. This utility model provides a small-sized internal circulation water heater with the advantage of compact size.

Description

Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to a small-sized internal circulation water heater. Background Technology

[0002] Existing water heaters achieve instant hot water output by setting up a water storage tank.

[0003] For example, patent document CN2715037Y discloses an energy-saving quasi-instantaneous electric water heater. The water heater mainly consists of an instantaneous electric water heater connected to a storage tank and a hot water pump. A one-way safety valve is sequentially connected to a one-way valve, a hot water pump, an instantaneous electric water heater, a storage tank, a mixing valve, and a shower head to form a water circuit. A heat recovery device is installed on the water circuit, which consists of a water receiving tray, a filter, a heat exchanger, and a three-way valve connected in series. The heat recovery device is connected between the one-way safety valve and the hot water pump.

[0004] For example, patent document CN109297180A discloses an intelligent preheating circulation gas water heater, a preheating circulation system and a control method. A water storage tank and a water pump are installed on the inlet pipe, a three-way valve is installed on the outlet pipe, and a heat exchanger is installed between the inlet pipe and the outlet pipe. The three-way valve and the water storage tank are connected through a bypass pipe. When the preheating circulation function is activated, the three-way valve is controlled to conduct through the bypass pipe. The inlet pipe, water pump, heat exchanger, outlet pipe, three-way valve, bypass pipe and water storage tank constitute an internal circulation pipeline system.

[0005] However, the water heaters described above are relatively large due to the inclusion of a water storage tank.

[0006] Therefore, a small-sized wastewater treatment device is provided to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a small-sized internal circulation water heater with the advantage of small size.

[0008] The technical solution adopted by this utility model to solve the problem is: a small-sized internal circulation water heater, including: a shell, one side of the shell is an opening, a panel is provided at the opening of the shell, a burner and a heat exchanger are provided inside the shell, the heat exchanger is located above the burner, a first circuit board and a second circuit board are provided inside the shell, and a display is provided on the inner side of the panel.

[0009] As a further improvement to the above technical solution, the first circuit board, the second circuit board, and the display are all provided with protective shells.

[0010] As a further improvement to the above technical solution, the edge of the outer shell is provided with a notch, and the edge of the panel is provided with a plurality of hooks with upward openings, the hooks being adapted to the notch.

[0011] As a further improvement to the above technical solution, a connecting ear is provided on the top of the panel.

[0012] As a further improvement to the above technical solution, the housing is provided with a water reservoir and a water pump, the water reservoir, the water pump and the heat exchanger are connected in sequence, the first circuit board, the second circuit board and the water pump are arranged in sequence along the left and right direction, the first circuit board is an ignition circuit board, the second circuit board is a control circuit board, and an igniter is also included, the igniter is disposed on the water reservoir, and the first circuit board is electrically connected to the igniter.

[0013] The beneficial effect of this utility model is that by setting the first circuit board, the display, and the second circuit board in different positions, it can adapt to the small size design requirements of water heaters. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention; Figure 2 for Figure 1 The exploded view shown; Figure 3 This is a structural view of the panel in this utility model.

[0016] In the diagram: 1. Outer casing; 11. Notch; 2. Panel; 21. Hook; 22. Connecting ear; 3. First circuit board; 4. Second circuit board; 5. Display; 6. Heat exchanger; 7. Water tank; 8. Water pump; 9. Ignition device. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Reference Figures 1 to 3 A small-sized internal circulation water heater includes: a shell 1 with an opening on one side and a panel 2 at the opening; a burner and a heat exchanger 6 are disposed inside the shell 1, with the heat exchanger 6 located above the burner; a first circuit board 3 and a second circuit board 4 are disposed inside the shell 1; and a display 5 is disposed inside the panel 2. The first circuit board 3, the display 5, and the second circuit board 4 are respectively disposed in three different positions to accommodate the small-size design requirements of the water heater.

[0022] In a preferred embodiment, the first circuit board 3, the second circuit board 4, and the display 5 are all provided with protective shells. This protects the circuit boards from damage.

[0023] In a preferred embodiment, the edge of the outer casing 1 is provided with a notch 11, and the edge of the panel 2 is provided with a plurality of upward-facing hooks 21, which are adapted to the notch 11.

[0024] As a preferred embodiment, the top of the panel 2 is provided with a connecting ear 22. When installing the panel 2, the hook 21 is inserted into the notch 11, and then the panel 2 is lifted up so that the hook 21 is hooked on the edge of the notch 11. Then the connecting ear 22 is connected to the outer shell 1 by bolts to realize the installation of the panel. This can make the panel 2 free of exposed bolts and improve its aesthetics.

[0025] In a preferred embodiment, the outer casing 1 contains a water reservoir 7 and a water pump 8, which are sequentially connected to the water reservoir 7, water pump 8, and heat exchanger 6. A first circuit board 3, a second circuit board 4, and water pump 8 are arranged sequentially along a left-right direction. The first circuit board 3 is an ignition circuit board, and the second circuit board 4 is a control circuit board. An igniter 9 is also included, mounted on the water reservoir. The first circuit board 3 is electrically connected to the igniter 9. Water enters the heat exchanger 6 from the outside, is heated by the burner, and then circulates to the water reservoir 7 via the water pump 8. When hot water is needed, it is released directly through the water reservoir 7, providing immediate hot water supply.

[0026] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A small size in-circulation water heater, characterized by, include: The outer casing (1) has an opening on one side. A panel (2) is provided at the opening of the outer casing (1). A burner and a heat exchanger (6) are provided inside the outer casing (1). The heat exchanger (6) is located above the burner. A first circuit board (3) and a second circuit board (4) are provided inside the outer casing (1). A display (5) is provided on the inner side of the panel (2).

2. A small-sized internal circulation water heater as described in claim 1, characterized in that: The first circuit board (3), the second circuit board (4) and the display (5) are all provided with protective shells.

3. A small-sized internal circulation water heater as described in claim 2, characterized in that: The outer shell (1) has a notch (11) on its edge, and the panel (2) has a plurality of hooks (21) with openings facing upwards on its edge. The hooks (21) are adapted to the notch (11).

4. A small-sized internal circulation water heater as described in claim 3, characterized in that: The top of the panel (2) is provided with a connecting ear (22).

5. A small-sized internal circulation water heater as described in any one of claims 1-4, characterized in that: The housing (1) is provided with a water storage tank (7) and a water pump (8). The water storage tank (7), the water pump (8) and the heat exchanger (6) are connected in sequence. The first circuit board (3), the second circuit board (4) and the water pump (8) are arranged in sequence along the left and right directions. The first circuit board (3) is an ignition circuit board and the second circuit board (4) is a control circuit board. It also includes an igniter (9). The igniter (9) is set on the water storage tank. The first circuit board (3) is electrically connected to the igniter (9).

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