Electric water heater

Abstract

The present invention discloses an electric water heater. The electric water heater comprises: a water tank, the water tank is provided with a water inlet pipe and a water outlet pipe; a first three-way pipe, the first three-way pipe is connected to the water inlet pipe; a second three-way pipe, the second three-way pipe is connected to the water outlet pipe; a regulating component, the regulating component comprises a connecting water pipe and a regulating valve, the connecting water pipe and the regulating valve are connected between the first three-way pipe and the second three-way pipe. The present invention reduces or avoids the occurrence of too low water temperature due to mixed water by adding a regulating valve, so as to improve user experience.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to an electric water heater. Background Art

[0002] At present, electric water heaters are household appliances commonly used in people's daily lives. Electric water heaters are usually equipped with a water tank and an electric heating pipe arranged in the water tank. The motor heat pipe heats the water in the water tank after being energized. At the same time, the water tank is connected to a water inlet pipe and a water outlet pipe. Cold water enters the water tank through the water inlet pipe, and the hot water in the water tank is output from the water outlet pipe.

[0003] The normal heating temperature of electric water heaters in the prior art can reach 75 degrees, and with the continuous advancement of technology, water heaters with instant hot wash and 3D wash functions are gradually being promoted and used. In the instant hot wash and 3D wash modes, the temperature of the hot water in the water heater will quickly rise by more than 10 degrees, thereby making the temperature of the hot water flowing out of the outlet pipe higher. Users usually use a mixing valve to adjust the ratio of cold and hot water. However, due to the high outlet water temperature of the water heater, it is easy for the user to be scalded by hot water due to improper operation. Chinese Patent No. 201721564514.5 discloses an integrated water mixing structure for an electric water heater, which mainly configures a tee on the water inlet pipe and the water outlet pipe of the water tank, and the two tees are connected by a water guide pipe. In actual use, part of the cold water enters the tee on the hot water pipe through the tee on the water inlet pipe, thereby reducing the temperature of the hot water output from the water tank.

[0004] However, in actual use, the mixing amount of cold water and hot water is uncontrollable, and the outlet water temperature of the electric water heater is too low, resulting in poor user experience. In view of this, how to design an electric water heater with good user experience is a technical problem to be solved by the present invention. Summary of the invention

[0005] The present invention provides an electric water heater, which can reduce or avoid the occurrence of too low water temperature due to water mixing, so as to improve user experience.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides an electric water heater, comprising:

[0008] A water tank, wherein the water tank is provided with a water inlet pipe and a water outlet pipe;

[0009] A first three-way pipe, wherein the first three-way pipe is connected to the water inlet pipe;

[0010] A second three-way pipe, wherein the second three-way pipe is connected to the water outlet pipe;

[0011] The regulating component includes a connecting water pipe and a regulating valve, wherein the connecting water pipe and the regulating valve are connected between the first three-way pipe and the second three-way pipe.

[0012] Further, the regulating valve is connected to the first three-way pipe, or the regulating valve is connected to the second three-way pipe.

[0013] Furthermore, the connecting water pipe has a corrugated tube structure as a whole.

[0014] Furthermore, the connecting water pipe is a spiral pipe structure as a whole.

[0015] Furthermore, the inner diameter of the connecting water pipe gradually decreases along the water flow direction.

[0016] Furthermore, a one-way valve is also provided in the connecting water pipe, and the one-way valve is used to control the water output from the first three-way pipe to flow into the second three-way pipe through the connecting water pipe.

[0017] Furthermore, the inner diameter of the connecting water pipe is smaller than the inner diameter of the water inlet pipe.

[0018] Furthermore, the regulating valve is a flow regulating valve or a stop valve.

[0019] Furthermore, the electric water heater also includes a protective cover, which is arranged on the water tank and covers the first three-way pipe, the second three-way pipe and the adjustment component.

[0020] Furthermore, the protective cover is mounted on the water tank.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are: by configuring a regulating component between two tees, the regulating valve in the regulating component can, on the one hand, adjust the water flow rate of the connected water pipe, thereby controlling the degree of mixing of cold and hot water, so that the user can obtain a more suitable water temperature; on the other hand, by closing the regulating valve, the user's demand for high-temperature water can be met, thereby effectively meeting the user's demand for different water temperatures, thereby improving the user experience of the electric water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 One of the structural schematic diagrams of an electric water heater of the present invention;

[0024] Figure 2 This is a second structural schematic diagram of an embodiment of an electric water heater of the present invention;

[0025] Figure 3 This is a structural schematic diagram of an adjustment component in an embodiment of an anti-scalding module of the present invention;

[0026] Figure 4 for Figure 3 One of the cross-sectional views of the middle adjustment assembly;

[0027] Figure 5 for Figure 3 The second cross-sectional view of the middle adjustment component;

[0028] Figure 6 for Figure 3 The third cross-sectional view of the middle adjustment component. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] Embodiment 1, as Figure 1-Figure 3 As shown, this embodiment provides an electric water heater, comprising: a water tank 1 , a first three-way pipe 2 , a second three-way pipe 3 and a regulating component 4 .

[0032] The water tank 1 is provided with a water inlet pipe 11 and a water outlet pipe 12; a first three-way pipe 2 is connected to the water inlet pipe 11; and a second three-way pipe 3 is connected to the water outlet pipe 12. The first three-way pipe 2 is used to connect to an external water supply source to introduce cold water, while the second three-way pipe 3 is connected to a user-end water-using device to output hot water output from the water tank 1.

[0033] The regulating assembly 4 includes a connecting water pipe 41 and a regulating valve 42 , and the connecting water pipe 41 and the regulating valve 42 are connected between the first three-way pipe 2 and the second three-way pipe 3 .

[0034] Specifically, the water tank 1 of the electric water heater introduces cold water through the first three-way pipe 2, and outputs hot water through the second three-way pipe 3. The connecting water pipe 41 is connected between the first three-way pipe 2 and the second three-way pipe 3. In actual use, when hot water is output through the second three-way pipe 3, part of the cold water entering from the first three-way pipe 2 will be transported to the second three-way pipe 3 through the connecting water pipe 41 to mix the hot water output from the water tank 1, thereby preventing the output water temperature from being too high and scalding the user.

[0035] In actual use, the user can adjust the mixing degree of cold and hot water as needed. In addition, when the set temperature of the electric water heater is not very high, the cold water flow of the connecting water pipe 41 can be reduced by the regulating valve 42; and when the set temperature of the electric water heater is high, the cold water flow of the connecting water pipe 41 can be increased by the regulating valve 42. For example: when the user sets the water temperature at 60 degrees, the opening of the regulating valve 42 can be reduced, and when the user sets the water temperature at 70 degrees, the opening of the regulating valve 42 can be increased. In addition, when the user needs high-temperature water, for example, when the user needs to output hot water above 70 degrees without mixing water, the regulating valve 42 can be completely turned off to close the connecting water pipe 41. In this way, the user's water demand for different water temperatures under different circumstances can be met.

[0036] In some embodiments, for the installation position of the regulating valve 42, the regulating valve 42 can be connected to the first three-way pipe 2, or the regulating valve 42 can be connected to the second three-way pipe 3 as needed. In addition, for the connecting water pipe 41, a straight pipe can be used. Alternatively, the connecting water pipe 41 is a wave pipe structure as a whole, or the connecting water pipe 41 is a spiral pipe structure as a whole, and a connecting water pipe with an arc is used, and the length of the connecting straight line can be adjusted to compensate for the deviation of the water inlet and outlet spacing, which can adapt to multi-scene installation. The inner diameter of the connecting water pipe 41 gradually decreases along the direction of the water flow. By using the connecting water pipe 41 with a gradually decreasing inner diameter to transport cold water, the water flow rate of cold water entering the second three-way pipe 3 can be reduced, thereby avoiding excessive output of cold water. At the same time, in order to ensure that the cold water mainly flows into the water tank 1, the inner diameter of the connecting water pipe 41 is smaller than the inner diameter of the water inlet pipe 11. In this way, the water flow rate can be more effectively distributed by relying on the different inner diameters of the connecting water pipe 41 and the water inlet pipe 11.

[0037] In other embodiments, in order to prevent hot water from flowing in the reverse direction through the connecting water pipe 41, a one-way valve (not shown) may be further provided in the connecting water pipe 41, and the one-way valve is used to control the water output from the first three-way pipe 2 to flow into the second three-way pipe 3 through the connecting water pipe 41. Specifically, the one-way valve disposed on the connecting water pipe 41 can control the flow direction of the water flow in the connecting water pipe 41, and the cold water output from the first three-way pipe 2 can be output from the one-way valve, but the hot water output from the second three-way valve cannot flow in the reverse direction through the one-way valve.

[0038] In some embodiments, different valve types may be used for the expression entity of the regulating valve 42 , for example, the regulating valve 42 is a flow regulating valve or a stop valve.

[0039] In other embodiments, in order to optimize the appearance, the electric water heater further comprises a shield 5, which is arranged on the water tank 1 and covers the first three-way pipe 2, the second three-way pipe 3 and the adjustment component 4. Specifically, by configuring the shield 5 on the water tank 1, the first three-way pipe 2, the second three-way pipe 3 and the adjustment component 4 connected to the water tank 1 are shielded by the shield 5 to optimize the overall appearance. As for the shield 5, it can be installed on the water tank 1 in a card-mounted manner to facilitate the assembly of the operator, and the specific card-mounted structure can adopt conventional structures such as a card tongue and a card slot, which will not be limited or repeated here.

[0040] Embodiment 2, based on the above embodiment 1, in order to better improve the user experience, such as Figure 4-Figure 6 As shown, the regulating valve 42 includes a valve body 421, a valve core 422, a knob 423 and a thermostat (not shown in the figure), the valve body 421 is provided with a through hole 4211 and a blind hole 4212, the blind hole 4212 and the through hole 4211 are cross-arranged and interconnected, the valve core 422 has a threaded portion 4221, a first blocking portion 4222, a flow regulating portion 4223 and a second blocking portion 4224 arranged in sequence, the valve core 422 is inserted in the blind hole 4212 and can reciprocate on the blind hole 4212, the knob 423 is rotatably mounted on the valve body 421, a threaded hole 4231 is provided in the knob 423, the threaded portion 4221 is threadedly connected in the threaded hole 4231, the knob 423 is also connected to the thermostat and used to adjust the thermostat, and the through hole 4211 is connected to the connecting water pipe 41.

[0041] Specifically, the regulating valve 42 cooperates with the valve core 422 through the valve body 421 to achieve normal flow regulation and water flow switch functions; at the same time, the thermostat configured by the regulating valve 42 is electrically connected to the electric control board configured by the electric water heater itself, so as to adjust the heating temperature of the electric water heater through the thermostat. Among them, the specific structure and principle of the thermostat refer to the thermostat structure in the conventional knob-type electric water heater, and no limitation or elaboration is made here.

[0042] In actual use, when the set temperature of the electric water heater is low, there is no need to input cold water for mixing water. Figure 4 As shown, the first blocking portion 4222 will cut off the through hole 4211. In this way, when the knob 423 is turned to control the temperature of the thermostat, cold water will not enter the second three-way pipe 3 through the connecting water pipe 41.

[0043] When the set temperature of the electric water heater is high, the hot water output from the water tank 1 needs to be mixed with a certain amount of cold water. Figure 5 As shown, as the knob 423 controls the thermostat to increase the heating temperature of the electric water heater, the flow regulating part 4223 gradually moves into the through hole 4211. The outer diameter of the flow regulating part 4223 is smaller than that of the first blocking part 4222 and the second blocking part 4224, so that water flows into the through hole 4211 and can flow through the flow regulating part 4223. In addition, the outer diameter of the flow regulating part 4223 gradually decreases from the first blocking part 4222 to the second blocking part 4224, so that as the temperature is increased, the flow limit of the flow regulating part 4223 decreases, and more cold water is output from the first three-way pipe 2 to enter the second three-way pipe 3 through the through hole 4211, so as to avoid scalding the user.

[0044] In special cases, when users need high temperature water, Figure 6 As shown, the knob 423 is continuously turned in the direction of increasing the temperature, so that the second blocking portion 4224 enters the through hole 4211, so as to cut off the through hole 4211 through the second blocking portion 4224. In this way, when the electric water heater outputs high-temperature water, water mixing is not performed, thereby satisfying the user's needs for different water temperatures.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An electric water heater, It is characterized in that include: A water tank, wherein the water tank is provided with a water inlet pipe and a water outlet pipe; A first three-way pipe, wherein the first three-way pipe is connected to the water inlet pipe; A second three-way pipe, wherein the second three-way pipe is connected to the water outlet pipe; A regulating assembly, the regulating assembly comprising a connecting water pipe and a regulating valve, the connecting water pipe and the regulating valve being connected between the first three-way pipe and the second three-way pipe; The regulating valve comprises a valve body, a valve core, a knob and a thermostat, the valve body is provided with a through hole and a blind hole, the blind hole is arranged crosswise with the through hole and is interconnected, the valve core has a threaded portion, a first blocking portion, a flow regulating portion and a second blocking portion arranged in sequence, the valve core is inserted in the blind hole and can reciprocate on the blind hole, the knob is rotatably mounted on the valve body, a threaded hole is provided in the knob, the threaded portion is threadedly connected in the threaded hole, the knob is also connected to the thermostat and is used to adjust the thermostat, and the through hole is connected to the connecting water pipe; Among them, when the set temperature of the electric water heater is low, the first blocking part will cut off the through hole; as the knob controls the thermostat to increase the heating temperature of the electric water heater, the outer diameter of the flow regulating part gradually decreases from the first blocking part to the second blocking part; continue to turn the knob in the direction of increasing the temperature, so that the second blocking part enters the through hole to cut off the through hole through the second blocking part.

2. The electric water heater according to claim 1, It is characterized in that The regulating valve is connected to the first three-way pipe, or the regulating valve is connected to the second three-way pipe.

3. The electric water heater according to claim 1, It is characterized in that The connecting water pipe is in the form of a wave tube structure as a whole.

4. The electric water heater according to claim 1, It is characterized in that The connecting water pipe is in a spiral pipe structure as a whole.

5. The electric water heater according to claim 1, It is characterized in that The inner diameter of the connecting water pipe gradually decreases along the water flow direction.

6. The electric water heater according to claim 1, It is characterized in that A one-way valve is also provided in the connecting water pipe, and the one-way valve is used to control the water output from the first three-way pipe to flow into the second three-way pipe via the connecting water pipe.

7. The electric water heater according to claim 1, It is characterized in that The inner diameter of the connecting water pipe is smaller than the inner diameter of the water inlet pipe.

8. The electric water heater according to claim 1, It is characterized in that The regulating valve is a flow regulating valve or a stop valve.

9. The electric water heater according to any one of claims 1 to 8, It is characterized in that The electric water heater further comprises a shield, which is arranged on the water tank and covers the first three-way pipe, the second three-way pipe and the adjustment assembly.

10. The electric water heater according to claim 9, It is characterized in that The guard cover is mounted on the water tank.

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