Gas water heater

Abstract

The utility model relates to the technical field of kitchen equipment, in particular to a gas water heater which comprises a shell and a water path system arranged in the shell. A water outlet pipeline of the waterway system is provided with a temperature warning device, and the temperature warning device is configured to sense the water temperature of water in the water outlet pipeline and give an alarm when the water temperature is larger than a warning value; the shell is provided with a window, and the window and the temperature warning device are oppositely arranged. According to the gas water heater, the temperature of water in the water outlet pipeline can be directly warned, and maintenance personnel can conveniently observe the temperature of the water in the water pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, and more specifically to a gas water heater. Background Art

[0002] A gas water heater, also known as a gas water heating furnace, refers to a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water.

[0003] The following maintenance scenarios exist: Before disassembly and repair, it is often necessary to run the gas water heater for a period of time to observe where the fault is. After observation, the gas water heater is turned off, and its housing and / or pipes are disassembled according to the location of the fault for repair or replacement. At this time, the outlet pipe part will be filled with high-temperature hot water. Due to the lack of temperature indication, when it is necessary to repair the outlet pipe, maintenance personnel often cannot directly judge whether the internal water temperature has dropped to a level where repair can be carried out, resulting in easy occurrence of scalding accidents. Summary of the Utility Model

[0004] The purpose of the utility model is to provide, in view of the deficiencies of the prior art: a gas water heater that can directly give an alarm about the temperature of the water in the outlet pipe, so as to facilitate maintenance personnel to observe the temperature of the water in the water pipe, and reduce the possibility of scalding accidents during maintenance.

[0005] The technical solution measures of the utility model are as follows:

[0006] A gas water heater, comprising: a housing and a water circuit system disposed inside the housing;

[0007] A temperature warning device is provided on the outlet pipe of the water circuit system, and it is configured to: sense the water temperature in the outlet pipe and give an alarm when the water temperature is greater than the warning value;

[0008] A window is provided on the housing, and the window is disposed opposite to the temperature warning device to achieve:

[0009] Through the window, the alarm of the temperature warning device can be directly observed from outside the housing.

[0010] Further as a preferred solution, the temperature warning device is: a temperature indicating layer formed by applying a reversible temperature indicating paint on the outer surface of the outlet pipe;

[0011] The temperature indicating layer is configured to: change color when the water temperature in the outlet pipe is greater than the warning value to give an alarm.

[0012] Further as a preferred solution, the outlet pipe includes: two outlet pipes arranged at intervals, and a water tank body connecting the two outlet pipes;

[0013] The water tank body is arranged opposite to the window, and the water tank body has: a water flow cavity for two water outlet pipes to communicate with each other;

[0014] The caliber of the water flow cavity is larger than the pipe diameter of the water outlet pipe, and the temperature indicating layer is arranged on the side surface of the water tank body facing the window.

[0015] Further as a preferred solution, the side surface of the water tank body facing the window includes: a plane opposite to the window;

[0016] The temperature indicating layer is arranged on this plane.

[0017] Further as a preferred solution, the water tank body is detachably fixed between the two water outlet pipes.

[0018] Further as a preferred solution, for each water outlet pipe, an insertion pipe is arranged on the water tank body to match the water outlet pipe, and the water outlet pipe is inserted into the insertion pipe and communicates with the water flow cavity;

[0019] Moreover, the insertion pipe and the water outlet pipe inserted into the insertion pipe are detachably connected through a buckling structure.

[0020] Further as a preferred solution, the buckling structure includes:

[0021] A first flange arranged on the outer periphery of the insertion pipe;

[0022] A second flange arranged on the outer periphery of the water outlet pipe. When the water outlet pipe is inserted into the insertion pipe, the second flange is fitted and attached to the first flange;

[0023] It also includes a detachable clip, which is configured to: limit the first flange and the second flange to fit together, so that the insertion pipe and the water outlet pipe inserted into the insertion pipe are detachably connected.

[0024] Further as a preferred solution, the clip includes:

[0025] Two clamps arranged at intervals on both sides of the water outlet pipe, and a connecting arm connecting the two clamps;

[0026] Each clamp is provided with a clamping hole, and the mutually attached first flange and second flange are jointly installed in the clamping hole, so that: the first flange and the second flange are restricted to fit together;

[0027] Moreover, the connecting arm has elasticity, so as to be able to: by driving the connecting arm to perform an elongation deformation, make the clip in a detachable state.

[0028] Further as a preferred solution, a seal is arranged between the water outlet pipe and the inner wall of the water tank body to fill the gap between the water outlet pipe and the inner wall of the water tank body.

[0029] Further as a preferred solution, a protective plate which is transparent and covers the window is provided on the housing.

[0030] The main beneficial effects of the above technical solution are as follows:

[0031] By providing a temperature warning device capable of warning the temperature of the water in the water outlet pipe, and providing a window on the housing for the temperature warning device, it is realized that maintenance personnel can conveniently and intuitively observe the temperature of the water in the water pipe outside the housing, reducing the possibility of scalding accidents during maintenance.

[0032] Further or more detailed beneficial effects will be described in combination with specific embodiments in the specific implementation manner. Brief Description of the Drawings

[0033] The following further describes the present utility model with reference to the drawings:

[0034] Figure 1 It is a schematic diagram of the overall structure of a gas water heater.

[0035] Figure 2 It is a schematic diagram of the water supply pipeline structure.

[0036] Figure 3 It is a schematic diagram of the water flow chamber structure.

[0037] Figure 4 It is a schematic diagram of the water tank body assembly.

[0038] As shown in the figure: housing - 1, bottom shell - 1a, panel - 1b, window - 1.1, protective plate - 1.2, water supply pipeline - 2, water inlet pipeline - 2.1, connecting pipeline - 2.2, water outlet pipeline - 2.3, water outlet pipe - 2.31, second flange - 2.311, water tank body - 2.32, water flow chamber - 2.321, insertion pipe - 2.322, first flange - 2.323, clip - 2.33, clamp - 2.331, connecting arm - 2.332, clamping hole - 2.333, seal - 2.34, temperature warning device - 3, temperature indicating layer - 3.1, heat exchanger - 6. Specific Embodiments

[0039] The following specifically exemplifies the present invention in combination with embodiments:

[0040] Embodiment:

[0041] A gas water heater, as shown in Appendix Figure 1 to Appendix Figure 4 shown, includes a housing 1 and a water system disposed inside the housing 1.

[0042] In this embodiment, the housing 1 includes a bottom case 1a and a front panel 1b. The bottom case 1a has a receiving cavity with an opening on one side. The water circuit system is installed in the receiving cavity of the bottom case 1a, and the front panel 1b is fixedly connected to the bottom case 1a, for example, by screws, to cover the opening of the receiving cavity, forming a housing with the water circuit system installed inside.

[0043] The water circuit system mainly includes a water supply pipe 2 for water circulation, which is divided into: an inlet pipe 2.1 with an inlet for water to flow in, an outlet pipe 2.3 with an outlet for water to flow out, and a connecting pipe 2.2 connecting the inlet pipe 2.1 and the outlet pipe 2.3.

[0044] Among them, the connecting pipe 2.2 is generally wound around the heat exchanger 6 inside the housing 1. When the water heater works, gas burns in the heat exchanger 6 to form a high temperature. Cold water enters the water supply pipe 2 from the inlet pipe 2.1. When flowing through the connecting pipe 2.2, the high temperature formed by the heat exchanger 6 heats the water to form hot water, and the hot water flows from the connecting pipe 2.2 to the outlet pipe 2.3 and then is discharged.

[0045] When the gas water heater needs to be repaired, it is often necessary to first drive the water heater to work as described above. After determining the fault point, then turn off the water heater (cut off the electrical connection between the main board of the water heater and the power supply) to repair the water heater. At this time, the outlet pipe 2.3 is filled with the just-heated high-temperature hot water. When the outlet pipe 2.3 needs to be repaired, it is often impossible for the maintenance personnel to directly judge whether the internal water temperature has dropped to a level where repair can be carried out, resulting in easy occurrence of scalding accidents.

[0046] Based on this, in this embodiment, a temperature warning device 3 is provided in the outlet pipe 2.3 of the water circuit system, which is configured to: sense the water temperature in the outlet pipe 2.3 (that is, know or obtain the water temperature state in the outlet pipe 2.3), and give a warning when the water temperature is greater than the warning value (the warning value is the water temperature value that causes a scalding sensation, for example, 50 °C, which is specifically adjusted and set according to actual needs), that is, display the situation where the water is in a high-temperature state for the maintenance personnel to pay attention to or to warn the maintenance personnel.

[0047] At the same time, in this embodiment, a window 1.1 is provided on the housing 1, and the window 1.1 is arranged opposite to the temperature warning device 3. For example, attached Figure 1As shown, in this embodiment, a window 1.1 is provided on the panel 1b opposite to the temperature warning device 3. Through the window 1.1, the warning of the temperature warning device 3 can be directly observed from outside the housing 1. That is, maintenance personnel can more quickly and directly observe the warning of the warning device 3 from outside the housing 1 without disassembling the housing 1, avoiding the situation where the warning of the warning device 3 can only be observed by disassembling the housing 1, resulting in the forced interruption of the maintenance operation, and the disassembled part of the housing structure must be temporarily placed, occupying the use space when not in maintenance.

[0048] For the temperature warning device 3:

[0049] In the first form, the temperature warning device 3 may include a temperature sensor for detecting the water temperature in the outlet water pipe 2.3, a display screen for receiving the temperature detected by the temperature sensor and displaying the temperature, and a battery independently arranged from the main board. The temperature sensor and the display screen are both electrically connected to the battery for power supply. When the water heater is shut down as described above, maintenance personnel can directly observe the water temperature in the outlet water pipe through the display screen. Specifically, when the temperature sensor senses a higher water temperature (reaching or greater than the warning value), and the temperature is displayed on the display screen, a warning can be formed to remind maintenance personnel not to disassemble the outlet water pipe 2.3 temporarily.

[0050] In the second form, the temperature warning device 3 may include a temperature sensor for detecting the water temperature in the outlet water pipe 2.3, and a warning light electrically connected to the temperature sensor. The warning light is configured to receive the temperature value detected by the temperature sensor and light up when the temperature value is greater than the warning value. It also includes a battery independently arranged from the main board. The temperature sensor and the warning light are both electrically connected to the battery for power supply. When the water heater is shut down as described above, maintenance personnel can directly judge the water temperature in the water pipe by observing whether the warning light is on. Specifically, when the temperature sensor senses a higher water temperature (reaching or greater than the warning value), the warning light lights up to form a warning, reminding maintenance personnel not to disassemble the outlet water pipe 2.3 temporarily.

[0051] In the third form, which is also the preferred form of this embodiment, the temperature warning device 3 is a temperature indicating layer 3.1 formed by applying a reversible temperature indicating paint on the outer surface of the outlet water pipe 2.3. The temperature indicating layer 3.1 is configured to change color when the water temperature in the outlet water pipe 2.3 is greater than the warning value for warning. That is, the water temperature in the outlet water pipe 2.3 is transferred to the temperature indicating layer 3.1 through heat transfer, enabling the temperature indicating layer 3.1 to sense the water temperature in the outlet water pipe 2.3 to know or obtain the water temperature state of the water in the outlet water pipe 2.3. When the temperature indicating layer 3.1 senses a water temperature greater than the warning value, it can change color to form a warning display.

[0052] The reversible thermochromic coating is selected according to the actual warning value. For example, when the warning value needs to be about 50 °C, silver mercuric iodide (Ag2HgI4) can be selected as the reversible thermochromic coating. When the temperature is lower than about 50.7 °C, it is yellow; when the temperature is higher than this value, it turns orange-red.

[0053] When the water heater is shut down as described above, the maintenance personnel can directly judge the temperature of the water in the water pipeline by observing whether the temperature indicating layer 3.1 has changed to the color presented when the temperature is higher than the warning value. Specifically, when the temperature indicating layer 3.1 senses a higher water temperature (reaching or greater than the warning value), the temperature indicating layer 3.1 immediately changes to the color presented when the temperature is higher than the warning value, reminding the maintenance personnel not to disassemble the outlet water pipeline 2.3 temporarily. Of course, in order to better play a reminder role, a label can also be posted outside the housing 1 to explain the specific color that the temperature indicating layer 3.1 can present when the water temperature is higher than the warning value.

[0054] In the third form, in order for the temperature indicating layer 3.1 to sense temperature better.

[0055] As shown in the attached Figure 2 to the attached Figure 4 As shown, the outlet water pipeline 2.3 includes: two outlet water pipes 2.31 arranged at intervals, and a water tank body 2.32 connecting the two outlet water pipes 2.31. The water tank body 2.32 is arranged opposite to the window 1.1, and the water tank body 2.32 has: a water flow cavity 2.321 for connecting the two outlet water pipes 2.31.

[0056] The diameter of the water flow cavity 2.321 is preferably larger than the pipe diameter of the outlet water pipe 2.31, and the temperature indicating layer 3.1 is arranged on the side of the water tank body 2.32 facing the window 1.1. In this way, for the temperature indicating layer 3.1 of the same area, compared with covering it outside the outlet water pipe 2.31 with a smaller pipe diameter and smaller capacity, by covering it outside the water tank body 2.32 with a larger diameter and larger capacity, it can sense a larger amount of hot water to obtain a more accurate sensing effect.

[0057] Furthermore, considering that the temperature indicating layer 3.1 is arranged on a curved surface and is prone to cracking under high temperature; in order to facilitate the setting of the temperature indicating layer 3.1 and reduce the possibility of cracking, the side of the water tank body 2.32 facing the window 1.1 includes: a plane opposite to the window 1.1; the temperature indicating layer 3.1 is arranged on this plane.

[0058] Furthermore, considering the replacement requirements of the water tank body 2.32 and the replacement requirements of the temperature indicating layer 3.1. In this embodiment, it is preferably to detachably fix the water tank body 2.32 between the two outlet water pipes 2.31.

[0059] Specifically, in this embodiment, for each water outlet pipe 2.31, an insertion pipe 2.322 is provided on the water tank body 2.32 in a matching manner. The water outlet pipe 2.31 is inserted into the insertion pipe 2.322 and is connected to the water flow cavity 2.321.

[0060] That is, as shown in the attached Figure 3 to the attached Figure 4 As shown, at the upper end of the water tank body 2.32, an insertion pipe 2.322 is provided in a matching manner for the upper water outlet pipe 2.31 above. The upper water outlet pipe 2.31 is inserted into the insertion pipe 2.322 at the upper end of the water tank body 2.32 and is connected to the water flow cavity 2.321. At the lower end of the water tank body 2.32, an insertion pipe 2.322 is provided in a matching manner for the lower water outlet pipe 2.31 below. The lower water outlet pipe 2.31 is inserted into the insertion pipe 2.322 at the lower end of the water tank body 2.32 and is connected to the water flow cavity 2.321. Thus, the two water outlet pipes 2.31 are connected through the water flow cavity 2.321.

[0061] Meanwhile, any insertion pipe 2.322 and the water outlet pipe 2.31 inserted into the insertion pipe 2.322 are detachably connected through a buckling structure, so that the water tank body 2.32 is detachably fixed between the two water outlet pipes 2.31.

[0062] In this embodiment, as shown in the attached Figure 3 to the attached Figure 4 As shown, the buckling structure includes: a first flange 2.323 provided on the outer periphery of the insertion pipe 2.322, a second flange 2.311 provided on the outer periphery of the water outlet pipe 2.31, and a detachable clip 2.33.

[0063] Among them, the first flange 2.323 and the second flange 2.311 are arranged in a matching manner, so that when the water outlet pipe 2.31 is inserted into the insertion pipe 2.322, the second flange 2.311 is fitted and attached to the first flange 2.323. The clip 2.33 is configured to: limit the first flange 2.323 and the second flange 2.311 to be attached together, so that the insertion pipe 2.322 and the water outlet pipe 2.31 inserted into the insertion pipe 2.322 are detachably connected.

[0064] Furthermore, as shown in the attached Figure 4 As shown, the clip 2.33 in this embodiment includes: two spaced clamping rings 2.331, and the two clamping rings 2.331 are respectively arranged on both sides of the water outlet pipe 2.31; it also includes a connecting arm 2.332 connecting the two clamping rings 2.331.

[0065] Among them, each clamping ring 2.331 is provided with a clamping hole 2.333, and the mutually attached first flange 2.323 and second flange 2.311 are jointly installed in the clamping hole 2.333, so as to be as shown in the attached Figure 2 and the attachedFigure 3 As shown: The first flange 2.323 and the second flange 2.311 are closely fitted together. Moreover, the connecting arm 2.332 is elastic so that: by driving the connecting arm 2.332 to undergo tensile deformation, the clip 2.33 can be in a detachable state. That is, by bending the two clamps 2.331 outwards, driving the connecting arm 2.332 to elongate, the first flange 2.323 and the second flange 2.311 are disengaged from the clamping hole 2.333, and then the clip 2.33 can be disassembled, enabling the water outlet pipe 2.31 to be pulled out from the insertion pipe 2.322 and the water tank body 2.32 to be disassembled.

[0066] A seal 2.34 can also be provided between the water outlet pipe 2.31 and the inner wall of the water tank body 2.32 to fill the gap between the water outlet pipe 2.31 and the inner wall of the water tank body 2.32. The seal 2.34 is preferably a sealing ring made of silicone or rubber, etc. By filling it in the gap between the water outlet pipe 2.31 and the inner wall of the water tank body 2.32, sealing can be achieved.

[0067] On the above basis, a protective plate 1.2 that is transparent and covers the window 1.1 can be additionally provided on the housing 1. The protective plate 1.2 is a plate member made of, for example, transparent acrylic plate, and it can cover the outer surface of the housing 1 and block and cover the window 1.1 as shown in the attachment. Figure 1 While not affecting the observation of the warning of the temperature warning device 3, the sealing performance of the entire housing 1 is improved, which can enhance the heating and heat preservation effect inside the housing 1 when the gas water heater is working properly and prevent heat from directly escaping through the window 1.1.

[0068] The above are only the preferred embodiments of the present invention and do not limit the scope of the present invention. Additionally, in the embodiments of the present invention, the terms "vertical", "horizontal", "front", "rear", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is habitually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. It should be further noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. in the description should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or a communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0069] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. Gas water heater, characterized in that, Comprising: A housing (1) and a water circuit system disposed within the housing (1); The outlet pipeline (2.3) of the water circuit system is provided with a temperature warning device (3), which is configured to: sense the water temperature in the outlet pipeline (2.3) and give a warning when the water temperature is greater than the warning value; A window (1.1) is provided on the housing (1), and the window (1.1) is disposed opposite to the temperature warning device (3) to achieve: Through the window (1.1), the warning of the temperature warning device (3) can be directly observed from outside the housing (1).

2. The gas water heater according to claim 1, characterized in that: The temperature warning device (3) is: a temperature indicating layer (3.1) formed by using a reversible temperature indicating paint on the outer surface of the outlet pipeline (2.3); The temperature indicating layer (3.1) is configured to: change color when the water temperature in the outlet pipeline (2.3) is greater than the warning value.

3. The gas water heater according to claim 2, wherein: The outlet pipeline (2.3) includes: two outlet pipes (2.31) arranged at intervals, and a water tank body (2.32) connecting the two outlet pipes (2.31); The water tank body (2.32) is disposed opposite to the window (1.1), and the water tank body (2.32) has: a water flow chamber (2.321) for connecting the two outlet pipes (2.31); The diameter of the water flow chamber (2.321) is larger than the diameter of the outlet pipe (2.31), and the temperature indicating layer (3.1) is provided on the side surface of the water tank body (2.32) facing the window (1.1).

4. The gas water heater according to claim 3, characterized in that: The side surface of the water tank body (2.32) facing the window (1.1) includes: a plane opposite to the window (1.1); The temperature indicating layer (3.1) is provided on this plane.

5. The gas water heater according to claim 3, characterized in that: The water tank body (2.32) is detachably fixed between the two outlet pipes (2.31).

6. The gas water heater according to claim 5, wherein: For each of the outlet pipes (2.31), an insertion pipe (2.322) matching the outlet pipe (2.31) is provided on the water tank body (2.32), and the outlet pipe (2.31) is inserted into the insertion pipe (2.322) to communicate with the water flow chamber (2.321); Moreover, the insertion pipe (2.322) and the outlet pipe (2.31) inserted into the insertion pipe (2.322) are detachably connected through a buckling structure.

7. The gas water heater according to claim 6, characterized in that: The buckling structure includes: A first flange (2.323) provided on the outer periphery of the insertion pipe (2.322); A second flange (2.311) provided on the outer periphery of the outlet pipe (2.31), and when the outlet pipe (2.31) is inserted into the insertion pipe (2.322), the second flange (2.311) is fitted and attached to the first flange (2.323); It further includes a detachable clip (2.33), which is configured to: limit the first flange (2.323) and the second flange (2.311) from fitting together, so that the insertion pipe (2.322) and the outlet pipe (2.31) inserted into the insertion pipe (2.322) are detachably connected.

8. The gas water heater according to claim 7, wherein: The clip (2.33) includes: Two clamps (2.331) spaced on both sides of the water outlet pipe (2.31), and a connecting arm (2.332) connecting the two clamps (2.331); Each of the clamps (2.331) is provided with a clamping hole (2.333), and the mutually fitting first flange (2.323) and the second flange (2.311) are jointly installed in the clamping hole (2.333) so that: the first flange (2.323) and the second flange (2.311) are restricted to fit together; Moreover, the connecting arm (2.332) has elasticity so that: by driving the connecting arm (2.332) to undergo an elongation deformation, the clip (2.33) is in a detachable state.

9. The gas water heater according to claim 6, characterized in that: A seal (2.34) for filling the gap between the water outlet pipe (2.31) and the inner wall of the water tank body (2.32) is provided between the water outlet pipe (2.31) and the inner wall of the water tank body (2.32).

10. The gas water heater according to claim 1, characterized in that: A protective plate (1.2) that is transparent and covers the window (1.1) is provided on the housing (1).

Images