Instant water heating device

Abstract

The utility model relates to an instant heating type water heating device which comprises an outer sleeve and a ceramic heating pipe, the outer sleeve is of a pipe body structure with one end open and the other end provided with an end sealing portion, the outer sleeve is provided with a water outlet connector, one end of the ceramic heating pipe is sleeved in the outer sleeve in a penetrating mode through the opening, and the other end of the ceramic heating pipe is provided with a water outlet connector. The water heater is characterized in that one end of the ceramic heating pipe is further provided with a positioning frame which is in contact with the inner wall of the outer sleeve and the sealing end part, and the positioning frame is provided with a water passing notch. Through the arrangement of the positioning frame, water in each area can be fully heated to the required temperature under the condition that the heating power is not changed, the high heat energy utilization rate and the good water heating effect are ensured, the end part of the ceramic heating pipe can be prevented from bumping against and scraping the outer sleeve, the damage probability is reduced, the occurrence of electric leakage is prevented, and the service life of the ceramic heating pipe is prolonged. And the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of heaters, in particular to an instant water heating device. Background Art

[0002] At present, in order to meet people's demand for hot water, many instant water heaters for heating water have appeared. For example, a Chinese patent document discloses a technical solution with a patent number of 201620571170.X and the name of "a liquid heater", which mainly includes a shell and a ceramic heating device, wherein the shell is a tube structure with an opening at one end and a sealed end at the other end, and a water outlet interface is provided on the shell, and one end of the ceramic heating device is inserted into the shell from the opening. When in use, cold water flows into the shell from the other end of the ceramic heating device, and then the cold water is heated by the ceramic heating device, and finally the hot water is discharged through the water outlet interface. Although this solution can heat water quickly, it still has the following shortcomings in practical applications:

[0003] First, since there is no installation and positioning structure between one end of the ceramic heating device and the inner wall and sealing end of the shell, one end of the ceramic heating device is suspended in the shell. In this way, the ceramic heating device is prone to swing and tilt during packaging and fixing, and ultimately the ceramic heating device is fixed in the shell in an inclined state, resulting in uneven and uneven intervals between the outer wall of the ceramic heating device and the inner wall of the shell, resulting in uneven water capacity. Areas with larger intervals contain more water, which heats more slowly and the water temperature rises slowly; areas with smaller intervals contain less water, which heats faster and the water temperature rises faster, resulting in uneven thermal energy utilization and unsatisfactory water heating effect. When the water is finally gathered at the water outlet, the water temperature control is not accurate enough to meet actual water use requirements.

[0004] Second, since the material of the ceramic heating device is relatively fragile and there is no barrier component at its end, its end is prone to collision and scratching with the shell during the insertion process, causing the ceramic heating device to crack easily and have a high chance of damage, which is prone to leakage and poses a high safety problem.

[0005] Therefore, based on the aforementioned deficiencies, it is very necessary to optimize and improve its structure in order to better meet people's application needs and safety requirements. Utility Model Content

[0006] The purpose of the utility model is to solve the above-mentioned problems and shortcomings and to provide an instant water heating device. The instant water heating device can ensure that the ceramic heating tube is evenly and centrally installed in the outer sleeve by setting a positioning frame, ensure that the internal space of each area is the same, and when the heating power remains unchanged, the water in each area can be fully heated to the required temperature, thereby ensuring high thermal energy utilization and good water heating effect, and preventing the end of the ceramic heating tube from colliding and scratching the outer sleeve, thereby reducing the probability of damage, preventing leakage, and improving safety of use.

[0007] The technical solution of the utility model is implemented as follows: an instant water heating device includes an outer sleeve and a ceramic heating tube, wherein the outer sleeve is a tube body structure with an opening at one end and a sealing end at the other end, and the outer sleeve is provided with a water outlet interface, and one end of the ceramic heating tube is inserted into the outer sleeve from the opening. The utility model is characterized in that one end of the ceramic heating tube is also provided with a positioning frame that contacts the inner wall of the outer sleeve and the sealing end, and a water-passing notch is provided on the positioning frame.

[0008] Preferably, a sleeve convex portion is provided at one end of the ceramic heating tube, and the positioning frame is provided with a sleeve hole, and the positioning frame is sleeved on the sleeve convex portion through the sleeve hole to be installed on the ceramic heating tube.

[0009] Preferably, the positioning frame is composed of a sleeve portion with a sleeve hole, a plurality of supporting legs arranged around the sleeve portion, and a plurality of positioning pieces, and the water-passing gap is formed in the gap between the positioning pieces.

[0010] Preferably, the ceramic heating tube is fixedly connected to the opening of the outer sleeve by gluing.

[0011] Preferably, the ceramic heating tube is provided with a mounting convex ring portion, and the outer sleeve is provided with a plurality of claws which are arranged around the opening and clamp and fix the mounting convex ring portion.

[0012] Preferably, a sealing rubber sleeve is provided between the ceramic heating tube and the opening of the outer sleeve.

[0013] Preferably, the water outlet interface is arranged on the side wall of the outer sleeve close to the opening.

[0014] Preferably, the inner diameter of the water outlet interface is smaller than the inner diameter of the ceramic heating tube.

[0015] Preferably, the outer sleeve is also provided with a thermostat mounting bracket.

[0016] Preferably, the ceramic heating tube comprises a ceramic tube core, a ceramic cladding layer coated on the outer side of the ceramic tube core, and an electric heating film arranged between the ceramic tube core and the ceramic cladding layer.

[0017] The beneficial effects of the utility model are as follows: since one end of the ceramic heating tube is provided with a positioning frame in contact with the inner wall and the sealing end of the outer sleeve, the ceramic heating tube will not swing or tilt at will when the sleeve is inserted and the package is fixed, so that the distance between each heating area of ​​the ceramic heating tube and the outer sleeve can be kept consistent, thereby ensuring that the ceramic heating tube is evenly installed in the outer sleeve, and ensuring that the internal space of each area is the same, under the condition of unchanged heating power, the water in each area can be fully heated to the required temperature, and the ceramic heating tube is fully covered by the heated water, so that the heat generated by the ceramic heating tube is completely absorbed by the water, and the heat generated by the electric energy is fully utilized, effectively ensuring that the thermal energy utilization rate is extremely high without waste, and the water heating speed and effect are excellent. In addition, by setting the positioning frame, it can also play a role of isolation, preventing the end of the ceramic heating tube from bumping and scratching the outer sleeve, greatly reducing the probability of damage to the ceramic heating tube, preventing leakage, and improving the safety of use. In addition, by setting a water gap, the water flowing through the ceramic heating tube can flow into the outer sleeve without blocking the passage of the water flow, and the use is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the first solution of the utility model.

[0019] Figure 2 It is a schematic cross-sectional structure diagram of the first solution of the utility model.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the second solution of the utility model.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the second scheme of the utility model.

[0022] Figure 5 It is a schematic diagram of the split structure of the positioning frame and the ceramic heating tube in the utility model.

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the ceramic heating tube of Scheme 1 of the utility model. DETAILED DESCRIPTION

[0024] like Figure 1 and Figure 2 As shown, the instant water heating device described in the utility model comprises an outer sleeve 1 and a ceramic heating tube 2. The outer sleeve 1 is a tube structure with an opening 11 at one end and a sealing end 12 at the other end, and the outer sleeve 1 is provided with a water outlet interface 13. One end of the ceramic heating tube 2 is inserted into the outer sleeve 1 from the opening 11. In order to achieve the purpose proposed by the utility model, Figure 5As shown, one end of the ceramic heating tube 2 is also provided with a positioning frame 3 in contact with the inner wall of the outer sleeve 1 and the sealing end 12, and the positioning frame 3 is provided with a water-passing notch 30. By providing the positioning frame 3, the utility model can fully heat the water in each area to the required temperature without changing the heating power, thereby ensuring high thermal energy utilization and good water heating effect, and can prevent the end of the ceramic heating tube 2 from colliding and scratching the outer sleeve 1, thereby reducing the probability of damage, preventing leakage, and improving the safety of use.

[0025] In order to make it easier to install the positioning frame 3 on the ceramic heating tube 2, as shown in FIG. Figure 5 As shown, one end of the ceramic heating tube 2 is provided with a sleeve convex portion 21, and the positioning frame 3 is provided with a sleeve hole 311. The positioning frame 3 is sleeved on the sleeve convex portion 21 through the sleeve hole 311 and installed on the ceramic heating tube 2. The sleeve connection method can make installation and removal very fast and easy.

[0026] In order to further improve the structure of the positioning frame 3, as Figure 5 As shown, the positioning frame 3 is composed of a sleeve portion 31 with a sleeve hole 311, and a plurality of supporting legs 32 and a plurality of positioning pieces 33 arranged around the sleeve portion 31. The gaps between the positioning pieces 33 form the water-passing gap 30. The supporting legs 32 are provided to contact the sealing end portion 12. The positioning pieces 33 are provided to contact the inner wall of the outer sleeve 1. In this way, the structure of the positioning frame 3 can be simpler and easier to manufacture.

[0027] The utility model provides two fixed connection schemes of the ceramic heating tube 2 and the outer sleeve 1: the first scheme is as follows: Figure 1 As shown, the ceramic heating tube 2 is fixedly connected to the opening 11 of the outer sleeve 1 by gluing. This fixed connection method has good sealing and firmness. In practical application, high temperature resistant glue such as phenolic resin glue or heat resistant epoxy glue can be used for bonding and fixing. The second solution, such as Figure 3 and Figure 4 As shown, the ceramic heating tube 2 is provided with a mounting convex ring portion 22, and the outer sleeve 1 is provided with a plurality of claws 14 arranged around the opening 11 and clamping and fixing the mounting convex ring portion 22. This fixed connection method is very easy to install and remove.

[0028] In order to further improve the connection sealing between the ceramic heating tube 2 and the outer sleeve 1, as Figure 2 and Figure 4 As shown, a sealing rubber sleeve 4 is further provided between the ceramic heating tube 2 and the opening 11 of the outer sleeve 1. This can improve the sealing performance, prevent water leakage, and prevent the occurrence of electric leakage caused by water leakage, thereby further improving the safety of use.

[0029] In order to extend the flow time of water in the instantaneous water heating device, such as Figure 2 and Figure 4 As shown, the water outlet interface 13 is arranged on the side wall of the outer sleeve 1 near the opening 11. This can prolong the heating time of water in the instant water heating device, improve the utilization rate of water to the thermal energy of the ceramic heating tube 2, so that the water can be fully heated to the required temperature.

[0030] In order to further extend the flow time of water in the instantaneous water heating device, such as Figure 2 and Figure 4 As shown, the inner diameter of the water outlet interface 13 is smaller than the inner diameter of the ceramic heating tube 2. This can further extend the heating time of water in the instant water heating device, further improve the utilization rate of water to the thermal energy of the ceramic heating tube 2, so that the water can be more fully heated to the required temperature.

[0031] To facilitate the installation of thermostats on instant water heating devices, such as Figure 1 and Figure 3 As shown, the outer sleeve 1 is also provided with a thermostat mounting bracket 5. This makes it easy to mount the thermostat on the instant water heating device.

[0032] In order to further improve the structure of the ceramic heating tube 2, as Figure 6 As shown, the ceramic heating tube 2 includes a ceramic tube core 23, a ceramic coating layer 24 coated on the outer side of the ceramic tube core 23, and an electric heating film 25 arranged between the ceramic tube core 23 and the ceramic coating layer 24. In this way, the structure of the ceramic heating tube 2 can be simpler and easier to manufacture. In addition, the electric heating film 25 is arranged between the ceramic tube core 23 and the ceramic coating layer 24, so that the electric heating film 25 is not exposed and does not directly contact water, thereby avoiding leakage and making it safer to use.

Claims

1. An instant water heating device, comprising an outer sleeve (1) and a ceramic heating tube (2), wherein the outer sleeve (1) is a tube structure with an opening (11) at one end and a sealing end (12) at the other end, and the outer sleeve (1) is provided with a water outlet interface (13), and one end of the ceramic heating tube (2) is inserted into the outer sleeve (1) from the opening (11), characterized in that: One end of the ceramic heating tube (2) is also provided with a positioning frame (3) in contact with the inner wall of the outer sleeve (1) and the sealing end portion (12), and a water-passing notch (30) is provided on the positioning frame (3).

2. The instant water heating device according to claim 1, characterized in that: One end of the ceramic heating tube (2) is provided with a sleeve convex portion (21), the positioning frame (3) is provided with a sleeve hole (311), and the positioning frame (3) is mounted on the ceramic heating tube (2) by sleeve-fitting the sleeve convex portion (21) through the sleeve hole (311).

3. The instant water heating device according to claim 1, characterized in that: The positioning frame (3) is composed of a sleeve portion (31) having a sleeve hole (311), a plurality of supporting legs (32) arranged around the sleeve portion (31), and a plurality of positioning pieces (33), wherein the gaps between the positioning pieces (33) form the water-passing gaps (30).

4. The instant water heating device according to claim 1, characterized in that: The ceramic heating tube (2) and the opening (11) of the outer sleeve (1) are fixedly connected together by gluing.

5. The instant water heating device according to claim 1, characterized in that: The ceramic heating tube (2) is provided with a mounting convex ring portion (22), and the outer sleeve (1) is provided with a plurality of claw pieces (14) arranged around the opening (11) and clamping and fixing the mounting convex ring portion (22).

6. The instant water heating device according to claim 1, characterized in that: A sealing rubber sleeve (4) is also provided between the ceramic heating tube (2) and the opening (11) of the outer sleeve (1).

7. The instant water heating device according to claim 1, characterized in that: The water outlet interface (13) is arranged on a side wall of the outer sleeve (1) close to the opening (11).

8. The instant water heating device according to claim 1, characterized in that: The inner diameter of the water outlet interface (13) is smaller than the inner diameter of the ceramic heating tube (2).

9. The instant water heating device according to claim 1, characterized in that: The outer sleeve (1) is also provided with a temperature controller mounting bracket (5).

10. The instant water heating device according to claim 1, characterized in that: The ceramic heating tube (2) comprises a ceramic tube core (23), a ceramic coating layer (24) coating the outer side of the ceramic tube core (23), and an electric heating film (25) arranged between the ceramic tube core (23) and the ceramic coating layer (24).

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