Thick film water heater

Abstract

The utility model discloses a thick film water heater which comprises a water storage container and a thick film heater, an installation opening is formed in the circumferential side face of the water storage container, a heating bowl is fixed to the installation opening, the thick film heater is installed in the heating bowl, and the thick film heater is attached to the bottom face of the heating bowl. The heater is arranged on the circumferential side face of the water outlet container, the axial space does not need to be occupied, installation is more convenient, the heater does not make direct contact with water, later maintenance is facilitated, and water does not need to be drained.

Description

Technical Field

[0001] The utility model belongs to the technical field of heaters, and more particularly relates to a thick film water heater. Background Art

[0002] An electric water heater is a water heater that uses electricity as energy for heating.

[0003] For example, Chinese patent publication number CN105546808A discloses a thick-film electric water heater, which includes a heater, a water storage tank, an insulation layer and an outer shell. The heater is located inside the water storage tank and is used to electrically heat the water inside the water storage tank. The heater also includes a water inlet pipe, a water outlet pipe and a magnesium rod. The water inlet pipe introduces water into the water storage tank through the water inlet. After the water is heated by the heater, the hot water is discharged from the water outlet pipe.

[0004] Chinese patent publication number CN105101497A discloses a thick-film heater comprising a bowl-shaped flange, a thick-film heating element, and a temperature probe tube. The flange has rectangular and circular through-holes at its bottom. The thick-film heating element passes through the rectangular through-hole and is welded to the flange, while the temperature probe tube passes through the circular through-hole and is welded to the flange. The thick-film heating element, used for heating, passes through the rectangular through-hole in the flange, is positioned as needed, and is welded to the flange. The temperature probe tube, used for temperature measurement, passes through the circular through-hole in the flange and is welded to the flange.

[0005] The thick film heater of the electric water heater in the above patent extends from the axial side of the water storage tank to the interior. Usually, the electric water heater is installed in a narrow bathroom with small space on both sides, which is not convenient for maintenance. Moreover, when performing maintenance, the water in the water storage tank must be drained before the flange and the thick film heater can be removed. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model provides a method of arranging the heater on the circumferential side of the water outlet tank, which does not occupy axial space and is more convenient to install. The heater does not directly contact the water, which is convenient for later maintenance without draining the water.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a thick-film water heater, comprising a water storage tank and a thick-film heater, wherein a mounting opening is provided on the circumferential side surface of the water storage tank, a heating bowl is fixed at the mounting opening, the thick-film heater is installed in the heating bowl, and the thick-film heater is attached to the bottom surface of the heating bowl.

[0008] Furthermore, the installation port, the heating bowl and the thick film heater are all provided in plurality.

[0009] Furthermore, a fixing ring is provided at the installation opening corresponding to the water storage tank, a plurality of positioning slots are provided on the circumferential side surface of the fixing ring, and a plurality of positioning tongues cooperating with the positioning slots are provided on the circumferential side surface of the heating bowl.

[0010] Furthermore, a sealing ring is provided between the heating bowl and the fixing ring.

[0011] Furthermore, a fixing hole is provided at the center of the thick film heater, and a fixing bolt is provided on the heating bowl. The fixing bolt passes through the fixing hole and cooperates with a nut to lock the thick film heater.

[0012] Furthermore, the water storage tank is provided with a sink hole, and a temperature sensor is provided in the sink hole.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging multiple heating bowls on the side of the water storage tank, the installation opening of the water storage tank is directly sealed, and contact heating is performed through the thick film heater. During repair or maintenance, the corresponding thick film heater can be directly removed without draining the water. At the same time, since it is located on the circumferential side, it is easy to take and place, and it is convenient to install the entire water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural diagram of the thick-film water heater of the utility model;

[0015] Figure 2 This is a cross-sectional view of the thick film water heater of the utility model;

[0016] Figure 3 It is a three-dimensional structural diagram of the fixing ring, heating bowl and thick film heater;

[0017] Figure 4 It is a cross-sectional view of the fixing ring, heating bowl and thick film heater;

[0018] Figure 5 Exploded view of the retaining ring, heating bowl, and thick film heater;

[0019] Figure 6 It is a split cross-sectional view of the fixing ring, heating bowl and thick film heater.

[0020] Figure numerals: 1. Water storage tank; 11. Hanging rack; 12. Fixing ring; 121. Positioning slot; 2. Heating structure; 21. Heating bowl; 211. Positioning tongue; 22. Thick film heater; 221. Fixing hole; 222. Anti-dry-burning thermostat; 23. Sealing ring; 3. Temperature sensor. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 6 The embodiment of the thick film water heater of the present utility model is further described.

[0022] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" and "a number" mean two or more, unless otherwise specifically defined.

[0024] A thick film water heater comprises a water storage tank 1 and a thick film heater 22. The circumferential side of the water storage tank 1 is provided with an installation opening, a heating bowl 21 is fixed at the installation opening, the thick film heater 22 is installed in the heating bowl 21, and the thick film heater 22 is attached to the bottom surface of the heating bowl 21.

[0025] A water inlet pipe and a water outlet pipe joint are provided at the bottom of the water storage container 1 .

[0026] like Figure 1 and 2 As shown, the back of the thick film water heater in this embodiment has a hanger 11 hung on the wall, the mounting port, the heating bowl 21 and the thick film heater 22 are located on the front of the water storage tank 1, and the heating bowl 21 is arranged at an angle, close to the bottom of the water storage tank 1. The scale generated in the water storage tank 1 can slide along the surface of the heating bowl 21 to avoid accumulation on the surface of the heating bowl 21 and affecting the heating efficiency.

[0027] When the water heater is suspended for installation, the components on the front side will basically not take up additional installation space, and there is enough space for disassembly and assembly during maintenance.

[0028] The thick film heater 22 transfers heat to the water by heating the bowl 21 , and the thick film heater 22 can be removed during maintenance or repair without draining the water in the water storage tank 1 .

[0029] like Figure 1 As shown, in this embodiment, the preferred mounting port, heating bowl 21 and thick film heater 22 are all provided in plurality.

[0030] Figure 1 Three groups of heating structures 2 are shown, and the heating structures 2 include a heating bowl 21 and a thick film heater 22. The three groups of heating structures 2 are evenly distributed along the axial direction. When heating, the water in the water storage tank 1 can be heated more quickly and evenly, and uneven hot water distribution can be avoided as much as possible. At the same time, when performing maintenance and repairs, removing one or two thick film heaters 22 will not affect the operation of the other thick film heaters 22, so that the water heater can remain in working condition without stopping.

[0031] like Figure 4-6 As shown, a fixing ring 12 is provided at the corresponding mounting port of the water storage tank 1, a plurality of positioning slots 121 are provided on the circumferential side surface of the fixing ring 12, and a plurality of positioning tongues 211 cooperating with the positioning slots 121 are provided on the circumferential side surface of the heating bowl 21.

[0032] In this embodiment, both the fixing ring 12 and the heating bowl 21 have steps, and when the two are combined, the steps of the two contact and press each other.

[0033] The fixing ring 12 is welded to the water storage tank 1. During assembly, the heating bowl 21 is directly inserted into the water storage tank 1 through the fixing ring 12. After the positioning tongue 211 reaches the positioning slot 121, the positioning tongue 211 is bent outward and inserted into the positioning slot 121 to fix the heating bowl 21 and the fixing ring 12 together.

[0034] Preferably, a sealing ring 23 is provided between the heating bowl 21 and the fixing ring 12 .

[0035] Specifically, the sealing ring 23 is located between the heating bowl 21 and the step of the fixing ring 12. The sealing ring 23 is used to seal between the heating bowl 21 and the fixing ring 12 to prevent the water storage tank 1 from leaking here. At the same time, the sealing ring 23 also has a heat-insulating effect, so that the heat of the heating bowl 21 can directly act on the water inside the water storage tank 1.

[0036] In this embodiment, a fixing hole 221 is preferably provided at the center of the thick film heater 22 , and a fixing bolt is provided on the heating bowl 21 . The fixing bolt passes through the fixing hole 221 and cooperates with a nut to lock the thick film heater 22 .

[0037] The thick film heater 22 can be quickly assembled and disassembled by screwing the nut. The thick film heater 22 in this embodiment is circular in shape as a whole, and its surface fits the bottom surface of the heating bowl 21, having a large heat conduction area.

[0038] In this embodiment, the water storage container 1 is preferably provided with a countersunk hole, and a temperature sensor 3 is provided in the countersunk hole.

[0039] When the temperature sensor 3 is replaced, it is not necessary to release all the water in the water storage tank 1, which is convenient to use.

[0040] Preferably, an anti-dry-burning thermostat 222 is connected to the thick film heater 22 to prevent the thick film heater 22 from being powered on when there is no water in the water storage tank 1 and avoiding dry-burning.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A thick film water heater, comprising a water storage tank and a thick film heater, characterized in that: The circumferential side of the water storage container is provided with a mounting opening, a heating bowl is fixed at the mounting opening, the thick film heater is installed in the heating bowl, and the thick film heater is attached to the bottom surface of the heating bowl.

2. The thick film water heater according to claim 1, characterized in that: The installation port, the heating bowl and the thick film heater are all provided in plurality.

3. The thick film water heater according to claim 2, characterized in that: The water storage container is provided with a fixing ring at the installation opening corresponding to the water storage container. The fixing ring is provided with a plurality of positioning slots on the circumferential side surface. The heating bowl is provided with a plurality of positioning tongues matched with the positioning slots on the circumferential side surface.

4. The thick film water heater according to claim 3, characterized in that: A sealing ring is provided between the heating bowl and the fixing ring.

5. The thick film water heater according to claim 4, characterized in that: A fixing hole is provided at the center of the thick film heater, and a fixing bolt is provided on the heating bowl. The fixing bolt passes through the fixing hole and cooperates with a nut to lock the thick film heater.

6. The thick film water heater according to claim 5, characterized in that: The water storage container is also provided with a sink hole, and a temperature sensor is provided in the sink hole.

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