Electrically heated water heater with temperature sensor fixation

Abstract

The utility model provides a kind of electric water heater of electric heating type facilitating temperature sensor fixation, including shell assembly, inner container assembly, electric heating tube and temperature sensing probe;Shell assembly is wrapped in the outside of inner container assembly, electric heating tube is installed in the heating cavity of inner container assembly;Inner container assembly includes water inlet connector, water outlet connector and barrel;The side wall of water outlet connector is provided with the temperature measuring hole being communicated with heating cavity, temperature sensing probe is inserted in temperature measuring hole and is sealed with temperature measuring hole periphery, the inside of temperature sensing probe is provided with the slot of outer end opening, slot is used for temperature sensor insertion;Electric water heater of electric heating type further includes top pressure piece, one end of top pressure piece is inserted in temperature measuring hole and is tightly resisted with the outer end of temperature sensing probe, the other end of top pressure piece is tightly resisted with the inner wall of barrel upper end;Temperature sensing probe in the utility model is compressed by top pressure piece, with the advantage that temperature sensing probe is fixed conveniently.

Description

Technical Field

[0001] This utility model relates to the field of electric water heater technology, and more specifically, to an electric water heater that facilitates the fixing of a temperature sensor. Background Technology

[0002] An electric water heater is a device used to heat water. Currently, commercially available electric water heaters include a shell assembly, an inner tank assembly, an electric heating element, and a temperature sensor. The shell assembly surrounds the inner tank assembly, and the electric heating element is installed in the heating chamber of the inner tank assembly. The inner tank assembly includes an inlet connector, an outlet connector, and a cylinder. The inlet connector is fixed to the lower end of the cylinder and circumferentially sealed to the cylinder, while the outlet connector is fixed to the upper end of the cylinder and circumferentially sealed to the cylinder. A temperature measuring hole communicating with the heating chamber is provided on the side wall of the outlet connector. The temperature sensor is inserted into the temperature measuring hole and circumferentially sealed to the hole. The temperature sensor has an open slot inside for inserting a temperature sensor. Additionally, a pair of lugs are provided at the outer end of the temperature sensor, and the temperature sensor is fixed to the outlet connector by screws passing through these lugs. In the above-described electric water heater structure, because the temperature sensor is fixed to the outlet connector by screws passing through these lugs, there is a disadvantage: the assembly of the temperature sensor and the outlet connector is inconvenient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an electric water heater that facilitates the fixing of a temperature sensor. The internal temperature sensor probe is pressed by a top pressure component, which has the advantage of convenient fixing of the temperature sensor probe.

[0004] This utility model provides an electric water heater that facilitates the fixing of a temperature sensor, including a shell assembly, an inner tank assembly, an electric heating tube, and a temperature probe. The shell assembly surrounds the outer side of the inner tank assembly, and the electric heating tube is installed in the heating chamber of the inner tank assembly. The inner tank assembly includes an inlet connector, an outlet connector, and a cylinder. The inlet connector is fixed to the lower end of the cylinder and circumferentially sealed to the cylinder, and the outlet connector is fixed to the upper end of the cylinder and circumferentially sealed to the cylinder. A temperature measuring hole communicating with the heating chamber is provided on the side wall of the outlet connector. The temperature probe is inserted into the temperature measuring hole and circumferentially sealed to the temperature measuring hole. The inside of the temperature probe is provided with a slot with an open outer end for inserting a temperature sensor. The electric water heater also includes a pressure member. One end of the pressure member is inserted into the temperature measuring hole and abuts against the outer end of the temperature probe, and the other end of the pressure member abuts against the inner wall of the upper end of the cylinder.

[0005] This utility model, through the setting of the top pressure component, since one end of the top pressure component is inserted into the temperature measuring hole and tightly abuts against the outer end of the temperature sensing probe, and the other end of the top pressure component is tightly abutting against the inner wall of the upper end of the cylinder, does not require the temperature sensing probe to be fixed with screws. This has the advantage of convenient fixing of the temperature sensing probe, and also brings convenience to the assembly of electric water heaters.

[0006] In one possible implementation, the pressure member is provided with a side-opening groove for the connection wire of the temperature sensor to pass through.

[0007] In one possible implementation, a slope is provided at the outer edge of the outer end of the top pressure member, and the slope gradually slopes towards the side of the water outlet connector from bottom to top.

[0008] In one possible implementation, the temperature probe is made of a thermally conductive metal material, a first sealing ring assembly is fitted on the outer wall of the temperature probe, an annular step is provided on the inner wall of the temperature measuring hole, and an annular convex edge is provided at the outer end of the temperature probe. The two ends of the first sealing ring assembly are respectively pressed against the annular step and the annular convex edge. The first sealing ring assembly is used to seal the gap between the temperature probe and the temperature measuring hole.

[0009] In one possible implementation, the temperature probe is made of silicone material, and the outer peripheral wall of the temperature probe is tightly sealed to the inner peripheral wall of the temperature measuring hole. An annular step is provided on the inner wall of the temperature measuring hole, and the outer end of the temperature probe is tightly pressed against the annular step.

[0010] In one possible implementation, the cylinder is made of stainless steel, and the inlet and outlet connectors are both made of plastic. The upper end of the inlet connector is inserted into the lower end of the cylinder, and a second sealing ring set is embedded on the outer wall of the upper end of the inlet connector to seal the gap between the inlet connector and the cylinder. The lower end of the outlet connector is inserted into the upper end of the cylinder, and a third sealing ring set is embedded on the outer wall of the lower end of the outlet connector to seal the gap between the outlet connector and the cylinder. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the inner liner assembly; Figure 3 This is a cross-sectional view of the inner liner assembly. Figure 4 A cross-sectional view of the temperature sensor, pressure component, and water outlet connector after assembly. Figure 5 This is a three-dimensional structural diagram of the temperature sensor, pressure plate, and water outlet connector after assembly. Detailed Implementation

[0012] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0013] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0014] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Example 1 See Figures 1-5 As shown in the figure, this application discloses an electric water heater that facilitates the fixing of a temperature sensor, including a shell assembly 1, an inner tank assembly 2, an electric heating tube 3, and a temperature sensing probe 4; the shell assembly 1 wraps around the outside of the inner tank assembly 2, and the electric heating tube 3 is installed in the heating chamber 21 of the inner tank assembly 2; the inner tank assembly 2 includes a water inlet connector 22, a water outlet connector 23, and a cylinder 24, the water inlet connector 22 is fixed to the lower end of the cylinder 24 and is circumferentially sealed to the cylinder 24, and the water outlet connector 23 is fixed to the upper end of the cylinder 24 and is circumferentially sealed to the cylinder 24; the water outlet connector 23... A temperature measuring hole 231 communicating with the heating chamber 21 is provided on the side wall. The temperature sensing probe 4 is inserted into the temperature measuring hole 231 and is circumferentially sealed with the temperature measuring hole 231. The temperature sensing probe 4 has a slot 41 with an external opening inside, which is used for the insertion of the temperature sensor. The electric water heater also includes a top pressure member 5. One end of the top pressure member 5 is inserted into the temperature measuring hole 231 and is tightly abutted against the outer end of the temperature sensing probe 4. The other end of the top pressure member 5 is tightly abutted against the inner wall of the upper end of the cylinder 24. The top pressure member is made of plastic material, which has the advantages of easy manufacturing and low cost.

[0017] The top pressure member 5 is provided with a wire groove 51 with a side opening, which is used for the connection wire of the temperature sensor to pass through. With this structure, the connection wire of the temperature sensor can be embedded in the wire groove, so that after the top pressure member presses the temperature probe into the temperature measuring hole, the connection wire of the temperature sensor can be easily led out through the top pressure member.

[0018] An inclined surface 52 is provided at the outer edge of the outer end of the top pressure member 5. The inclined surface 52 gradually slopes towards the water outlet connector 23 from bottom to top. With this structure, when the connecting wire of the temperature sensor is led out from the wire groove and bent upward relative to the top pressure member, the outer end of the top pressure member can be prevented from cutting the connecting wire of the temperature sensor under the action of the inclined surface.

[0019] The temperature probe 4 is made of a thermally conductive metal material. A first sealing ring group 6 is fitted onto the outer wall of the temperature probe 4. An annular step 232 is provided on the inner wall of the temperature measuring hole 231. An annular protrusion 42 is provided at the outer end of the temperature probe 4. The two ends of the first sealing ring group 6 are respectively tightly pressed against the annular step 232 and the annular protrusion 42. The first sealing ring group 6 is used to seal the gap between the temperature probe 4 and the temperature measuring hole 231. By using a thermally conductive metal material to make the temperature probe, it has the advantage of good thermal conductivity, which can accurately transmit the temperature of the water in the heating chamber to the detection end of the temperature sensor. The temperature probe can be made of copper. With the cooperation of the annular step, the first sealing ring group and the annular protrusion, the gap between the temperature probe and the temperature measuring hole can be reliably sealed, and the sealing structure is simple.

[0020] The cylinder 24 is made of stainless steel, while the inlet connector 22 and outlet connector 23 are both made of plastic. The upper end of the inlet connector 22 is inserted into the lower end of the cylinder 24, and a second sealing ring group 7 is embedded on the outer wall of the upper end of the inlet connector 22. The second sealing ring group 7 is used to seal the gap between the inlet connector 22 and the cylinder 24. The lower end of the outlet connector 23 is inserted into the upper end of the cylinder 24, and a third sealing ring group 8 is embedded on the outer wall of the lower end of the outlet connector 23. The third sealing ring group 8 is used to seal the gap between the outlet connector 23 and the cylinder 24. The inlet connector and outlet connector are fixed to the cylinder by a number of screws that are circumferentially spaced. By adopting the above structure, it has the advantages of convenient fixing of the inlet connector and outlet connector to the cylinder, and convenient circumferential sealing of the inlet connector and outlet connector to the cylinder.

[0021] Example 2 Unlike Embodiment 1, the temperature probe 4 is made of silicone material. The outer peripheral wall of the temperature probe 4 is tightly sealed to the inner peripheral wall of the temperature measuring hole 231. An annular step 232 is provided on the inner wall of the temperature measuring hole 231, and the outer end of the temperature probe 4 is tightly pressed against the annular step 232. By using silicone material to make the temperature probe, after the temperature probe is inserted into the temperature measuring hole, the temperature probe can automatically be tightly sealed to the inner wall of the temperature measuring hole, thus having the advantage of convenient circumferential sealing between the temperature probe and the temperature measuring hole. In addition, under the action of the annular step, the outer end of the temperature probe can be tightly pressed against the annular step, thereby realizing the limiting of the temperature probe and the temperature measuring hole, and enabling the top pressing component to reliably press the temperature probe.

[0022] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electric water heater for easy fixation of a temperature sensor, comprising a housing assembly (1), an inner tank assembly (2), an electric heating tube (3), and a temperature sensing probe (4); the housing assembly (1) is wrapped around the outside of the inner tank assembly (2), and the electric heating tube (3) is installed in the heating chamber (21) of the inner tank assembly (2); the inner tank assembly (2) includes a water inlet connector (22), a water outlet connector (23), and a cylinder (24), the water inlet connector (22) being fixed to the lower end of the cylinder (24) and connected to the inner tank assembly (24). The cylinder (24) is circumferentially sealed, and the water outlet connector (23) is fixed to the upper end of the cylinder (24) and circumferentially sealed with the cylinder (24); a temperature measuring hole (231) communicating with the heating chamber (21) is provided on the side wall of the water outlet connector (23), and the temperature sensing probe (4) is inserted into the temperature measuring hole (231) and circumferentially sealed with the temperature measuring hole (231); the temperature sensing probe (4) is provided with a slot (41) with an outer opening inside, and the slot (41) is used for the insertion of a temperature sensor; characterized in that: The electric water heater also includes a top pressure component (5), one end of which is inserted into the temperature measuring hole (231) and closely abuts against the outer end of the temperature sensing probe (4), and the other end of which is closely abuts against the inner wall of the upper end of the cylinder (24).

2. The electric water heater for easy fixing of temperature sensors according to claim 1, characterized in that: The top pressure member (5) is provided with a wire groove (51) with a side opening, and the wire groove (51) is used for the connection wire of the temperature sensor to pass through.

3. The electric water heater for easy fixing of temperature sensors according to claim 2, characterized in that: The outer edge of the top pressure member (5) is provided with a slope (52), which gradually slopes towards the side of the water outlet connector (23) from bottom to top.

4. The electric water heater for easy fixing of a temperature sensor according to any one of claims 1-3, characterized in that: The temperature probe (4) is made of thermally conductive metal material. A first sealing ring group (6) is fitted on the outer wall of the temperature probe (4). An annular step (232) is provided on the inner wall of the temperature measuring hole (231). An annular protrusion (42) is provided at the outer end of the temperature probe (4). The two ends of the first sealing ring group (6) are respectively pressed against the annular step (232) and the annular protrusion (42). The first sealing ring group (6) is used to seal the gap between the temperature probe (4) and the temperature measuring hole (231).

5. The electric water heater for easy fixing of a temperature sensor according to any one of claims 1-3, characterized in that: The temperature probe (4) is made of silicone material. The outer peripheral wall of the temperature probe (4) is tightly sealed to the inner peripheral wall of the temperature measuring hole (231). An annular step (232) is provided on the inner wall of the temperature measuring hole (231), and the outer end of the temperature probe (4) is tightly pressed against the annular step (232).

6. The electric water heater for easy fixing of a temperature sensor according to any one of claims 1-3, characterized in that: The cylinder (24) is made of stainless steel, and the inlet connector (22) and outlet connector (23) are both made of plastic. The upper end of the inlet connector (22) is inserted into the lower end of the cylinder (24). A second sealing ring group (7) is embedded on the outer wall of the upper end of the inlet connector (22). The second sealing ring group (7) is used to seal the gap between the inlet connector (22) and the cylinder (24). The lower end of the outlet connector (23) is inserted into the upper end of the cylinder (24). A third sealing ring group (8) is embedded on the outer wall of the lower end of the outlet connector (23). The third sealing ring group (8) is used to seal the gap between the outlet connector (23) and the cylinder (24).

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