Household appliance with heating assembly

Abstract

The utility model relates to a household appliance with a heating assembly. The household appliance comprises a water storage bin; the heating assembly comprises a heating pipe arranged in the water storage bin; the heating pipe is characterized in that the heating pipe has a tortuous form, and at least two layers of heating sub-pipes which are arranged at intervals are formed in the fluid flowing direction. The water heater has the advantages that the heating pipe twists and bends to form at least two layers of heating sub-pipes which are arranged at intervals in the fluid flowing direction, so that the heating area can be increased under the condition that the power of the heating pipe is not changed, liquid in the water storage bin can be heated by different layers of heating sub-pipes, the heating temperature difference is reduced, and the heating efficiency is improved. The heating assembly of the household appliance is simple in structure, the heating area can be increased only through electrical connection of one heating pipe, bubbles are reduced, and water boiling noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a household appliance with a heating component. Background Art

[0002] In the prior art, the heating component is an indispensable component in household appliances that need to heat liquid, such as water purifiers, water dispensers, water heaters or kettles. Taking the kettle as an example, the heating method of electric kettles on the market is mainly to set a heating tube at the bottom of the kettle body, and use a high-power rapid heating method to heat the kettle body. Due to the local heating of the bottom tube, only the liquid in the kettle body can be heated locally and rapidly, and a large number of bubbles will be generated in the heating tube area of ​​the kettle body, thereby producing a loud boiling water sound; in addition, the heat is concentrated and the temperature is high in the heating tube area of ​​the kettle body, which makes it easy for a large amount of scale to form in this area.

[0003] To solve the above technical problems, a Chinese utility model patent with patent number ZL201420584568.8 (authorization announcement number CN204207577U) discloses an electric kettle, wherein a plurality of water level sensors and a plurality of heating zones matching the water level sensors are arranged at intervals from top to bottom on the side wall of the inner tank of the electric kettle, a bottom heating body is also arranged at the bottom of the inner tank, and a control board independently drives the on and off of each heating zone through the water level signal of the water level sensor, thereby increasing the contact area between the heating zone and the inner tank and reducing the heating power density, thereby improving the reliability of the heating zone, reducing the occurrence of accidents such as burning and fire of the electric kettle, and reducing the maintenance cost of the product; the power is distributed to multiple heating zones to form a three-dimensional heating method, reducing local overheating of the inner tank wall and reducing the possibility of scale generation; the heating zone is in contact with the inner tank over a large area, thereby improving the heating efficiency and reducing the sound of boiling water caused by local extreme heating, thereby bringing a better user experience to users.

[0004] Although the above patent can reduce the problem of boiling water noise by setting multiple heating zones on the side wall of the inner pot to increase the heating area, the above solution has the following limitations: since the electric kettle needs to allocate different powers to each heating zone, each heating zone needs to be powered independently, which makes the electrical connection complicated. In addition, the power of the heating zone in the above electric kettle is basically constant. No matter how much the liquid has been heated to, as long as it has not been heated to the set temperature, it will be heated at full power. This heating method still cannot reduce the bubbles in the boiling process, so there will still be a certain amount of boiling water noise. Utility Model Content

[0005] The first technical problem to be solved by the present invention is to provide a household appliance with a heating component which only requires an electrical connection of one heating component and can increase the heating area in view of the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a household appliance with a heating component which reduces the generation of bubbles and reduces the sound of boiling water in view of the above-mentioned prior art.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a household appliance with a heating component, comprising:

[0008] Water storage tanks;

[0009] A heating assembly, including a heating pipe disposed in the water storage tank;

[0010] The characteristic is that the heating tube has a tortuous shape and forms at least two layers of heating sub-tubes arranged at intervals along the flow direction of the fluid.

[0011] In order to increase the heating rate, the water storage tank has a water inlet, and the projections of the areas surrounded by the layers of heating sub-tubes on the wall of the water storage tank where the water inlet is located partially overlap.

[0012] Preferably, the projection of the area surrounded by each layer of heating sub-tubes on the wall of the water storage tank where the water inlet is located covers the water inlet. In this way, the liquid entering from the water inlet can be heated by each layer of heating sub-tubes, thereby improving the heating efficiency and heating area.

[0013] In order to increase the heating area of ​​the heating tube, the spacing between two adjacent layers of heating sub-tubes is greater than M*d, where M is a preset integer and d is the diameter of the heating tube.

[0014] Preferably, the heating sub-tube consists of two layers, namely a first heating sub-tube and a second heating sub-tube located downstream of the first heating sub-tube. The projection area of ​​the area surrounded by the first heating sub-tube on the wall of the water storage tank where the water inlet is located is smaller than the projection area of ​​the area surrounded by the second heating sub-tube on the wall of the water storage tank where the water inlet is located.

[0015] There are many kinds of structures of the first heating sub-tube and the second heating sub-tube. Preferably, the first heating sub-tube and the second heating sub-tube are substantially parallel and both are U-shaped, and the first heating sub-tube and the second heating sub-tube have the same opening direction.

[0016] In order to reduce the temperature difference of heating, the projections of the two opposite parts of the first heating sub-tube on the second heating sub-tube are located between the two opposite heating parts of the second heating sub-tube.

[0017] To further increase the heating area, the spacing between the two opposite parts of the first heating sub-tube and the spacing between the two opposite parts of the second heating sub-tube are both greater than N*d, where N is a preset integer.

[0018] In order to make the heating tube more convenient to twist and turn, the open portion of the first heating sub-tube and the open portion on the same side of the second heating sub-tube are connected by a smooth transition section respectively.

[0019] Preferably, the area of ​​the region surrounded by the second heating sub-tube is substantially the same as the wall area of ​​the water storage tank where the water inlet is located.

[0020] In order to realize the electrical installation of the heating tube, the heating assembly also includes a flange for installing the head and tail ends of the heating tube. The flange is also provided with connection terminals for electrical connection of the heating tube. The flange is installed on the wall of the water storage tank through a fixed flange.

[0021] In order to expand the function of the heating component, a blind pipe is also provided on the flange, and the blind pipe has a closed end extending into the water storage tank.

[0022] To solve the second technical problem, a temperature sensing device for sensing water temperature is further provided in the water storage tank, and the household appliance includes a controller electrically connected to the temperature sensing device and the heating tube, and the controller is configured to control the power of the heating tube accordingly according to the detection result of the temperature sensing device. According to the characteristic that bubbles increase and then decrease as the temperature gradually increases, the power of the heating tube is dynamically adjusted according to the water temperature to reduce the generation of bubbles, thereby reducing the sound of boiling water.

[0023] In order to adjust the operation of the heating tube according to different water levels in the water storage tank, the household appliance also includes at least one water level detection device extending into the water storage tank for detecting the water level in the water storage tank, and the water level detection device is electrically connected to the controller.

[0024] Preferably, the household appliance is a water purifier and heat machine, a water dispenser, a water heater or a kettle.

[0025] Compared with the prior art, the advantages of the present invention are: by winding the heating tube to form at least two layers of heating sub-tubes arranged at intervals along the fluid flow direction, the heating area can be increased without changing the power of the heating tube. Therefore, the liquid in the water storage tank can be heated by different layers of heating sub-tubes, reducing the temperature difference of heating. The heating component of the household appliance has a simple structure and only requires an electrical connection of the heating tube to increase the heating area, reduce the generation of bubbles, and thus reduce the sound of boiling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the installation structure of the heating component in the embodiment of the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram of part of the structure (omit the side panel);

[0028] Figure 3 This is a schematic diagram of the structure of the heating component in the embodiment of the utility model;

[0029] Figure 4 for Figure 3 Side view of

[0030] Figure 5 for Figure 3 Bottom view of . DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] like Figures 1 to 5 As shown, the household appliance in this embodiment includes a water storage tank 1 and a heating component 2. The household appliance can be a water purifier and heat all-in-one machine, a water dispenser, a water heater or a kettle or other existing water heating appliances.

[0033] like Figure 1 and Figure 2 As shown, the water storage tank 1 has a water inlet 11, an exhaust port 12, a sewage outlet 13 and a hot water outlet 14. Figure 1 As shown, the water storage tank 1 is a rectangular parallelepiped, the water inlet 11, the exhaust port 12 and the sewage outlet 13 are all distributed on the bottom wall of the water storage tank 1, the hot water outlet 14 is located on the rear side wall of the water storage tank 1, and a heating pipe arranged in the water storage tank 1 is installed on the front side wall of the water storage tank 1.

[0034] The heating tube has a tortuous shape and forms at least two layers of heating sub-tubes arranged at intervals along the fluid flow direction, and the projections of the areas surrounded by each layer of heating sub-tubes on the wall surface of the water storage tank 1 where the water inlet 11 is located partially overlap, and the projections of the areas surrounded by each layer of heating sub-tubes on the wall surface of the water storage tank 1 where the water inlet 11 is located all cover the water inlet 11. In addition, the spacing between two adjacent layers of heating sub-tubes is greater than M*d, where M is a preset integer and d is the diameter of the heating tube. In this embodiment, the diameters of the heating tubes are the same at all locations.

[0035] like Figure 2As shown, the heating sub-tube is composed of two layers, namely, the first heating sub-tube 211 and the second heating sub-tube 212 located downstream of the first heating sub-tube 211. The projected area of ​​the area surrounded by the first heating sub-tube 211 on the wall of the water storage tank 1 where the water inlet 11 is located is smaller than the projected area of ​​the area surrounded by the second heating sub-tube 212 on the wall of the water storage tank 1 where the water inlet 11 is located; in addition, the area of ​​the area surrounded by the second heating sub-tube 212 is substantially the same as the wall area of ​​the water storage tank 1 where the water inlet 11 is located (this substantially the same can be understood as: the areas are equal or the difference between the two areas is less than a preset value). In this embodiment, the first heating sub-tube 211 and the second heating sub-tube 212 are substantially parallel and both are U-shaped, and the first heating sub-tube 211 and the second heating sub-tube 212 have the same opening direction.

[0036] like Figure 5 As shown, the projections of the two opposite parts of the first heating sub-tube 211 on the second heating sub-tube 212 are located between the two opposite heating parts of the second heating sub-tube 212. In addition, the spacing between the two opposite parts of the first heating sub-tube 211 and the spacing between the two opposite parts of the second heating sub-tube 212 are both greater than N*d, where N is a preset integer. In order to make the heating tube more convenient to twist and turn, in this embodiment, Figure 3 As shown, the open portion of the first heating sub-tube 211 and the open portion of the second heating sub-tube 212 on the same side are connected by a smooth transition section 213 respectively.

[0037] In order to facilitate the installation of the heating tube, Figures 3 to 5 As shown, the heating assembly 2 also includes a flange 22 for mounting the head and tail ends of the heating tube, and the flange 22 is also provided with a terminal 221 for electrical connection of the heating tube, and the flange 22 is mounted on the wall of the water storage tank 1 through a fixing flange 23. In addition, a blind pipe 24 is also provided on the flange 22, and the blind pipe 24 has a closed end 241 extending into the water storage tank 1, and the blind pipe 24 is mainly used to reserve other devices, for example: for installing a temperature probe.

[0038] The water storage tank 1 is also provided with a temperature sensing device 3 for sensing the water temperature. The household appliance includes a controller and at least one water level detection device 4 extending into the water storage tank 1 for detecting the water level in the water storage tank 1. The controller is electrically connected to the temperature sensing device 3 and the heating tube. The controller is configured to control the power of the heating tube accordingly according to the detection result of the temperature sensing device 3. Figure 2 As shown, there are three water level detection devices 4 in this embodiment, including a high water level probe for detecting a high water level, a middle water level probe for detecting a middle water level, and a low water level probe for detecting a low water level, and all water level detection devices 4 are electrically connected to the controller. The high water level probe, the middle water level probe, and the low water level probe all extend from the upper wall of the water storage tank 1 from top to bottom.

[0039] In this embodiment, when the low water level probe detects the water level, the heating tube works at full power P. When the temperature probe detects that the heating water temperature is heated to K1, the heating power of the heating tube is reduced. For example, the relationship between the heating power P1 of the heating tube and the temperature is:

[0040] When K-K1≤30℃, P1=0.8*P; when K-K1≤20℃, P1=0.6*P;

[0041] When K-K1≤10℃, P1=0.4*P; when K-K1≤5℃, P1=0.3*P;

[0042] When K-K1≤2℃, P1=0.2*P; when K-K1=0℃, P1=0*P

[0043] Where K is the preset temperature, usually 100°C.

[0044] By adjusting the heating power, the generation of bubbles can be reduced; and when the water level in the water storage tank is different, the heating power of the heating tube can also be controlled by referring to the relationship between the heating power P1 and the temperature.

Claims

1. A household appliance with a heating component, comprising: Water storage tank (1); A heating assembly (2) comprises a heating pipe arranged in the water storage tank (1); The invention is characterized in that the heating tube has a tortuous shape and forms at least two layers of heating sub-tubes (211, 212) arranged at intervals along the flow direction of the fluid.

2. The household appliance with a heating component according to claim 1, characterized in that: The water storage tank (1) has a water inlet (11), and the projections of the areas surrounded by the layers of heating sub-tubes (211, 212) on the wall surface of the water storage tank (1) where the water inlet (11) is located partially overlap.

3. The household appliance according to claim 2, characterized in that: The projections of the areas surrounded by the layers of heating sub-tubes (211, 212) on the wall surface of the water storage tank (1) where the water inlet (11) is located all cover the water inlet (11).

4. The household appliance according to claim 2, characterized in that: The distance between two adjacent layers of heating sub-tubes (211, 212) is greater than M*d, where M is a preset integer and d is the diameter of the heating tube.

5. The household appliance according to claim 2, characterized in that: The heating sub-tubes (211, 212) are two layers, namely a first heating sub-tube (211) and a second heating sub-tube (212) located downstream of the first heating sub-tube (211); the projection area of ​​the area surrounded by the first heating sub-tube (211) on the wall surface of the water storage tank (1) where the water inlet (11) is located is smaller than the projection area of ​​the area surrounded by the second heating sub-tube (212) on the wall surface of the water storage tank (1) where the water inlet (11) is located.

6. The household appliance according to claim 5, characterized in that: The first heating sub-tube (211) and the second heating sub-tube (212) are substantially parallel and both are U-shaped, and the first heating sub-tube (211) and the second heating sub-tube (212) have the same opening direction.

7. The household appliance according to claim 6, characterized in that: The projections of the two opposite parts of the first heating sub-tube (211) on the second heating sub-tube (212) are located between the two opposite heating parts of the second heating sub-tube (212).

8. The household appliance according to claim 7, characterized in that: The spacing between the two opposite parts of the first heating sub-tube (211) and the spacing between the two opposite parts of the second heating sub-tube (212) are both greater than N*d, where N is a preset integer.

9. The household appliance according to claim 7, characterized in that: The open portion of the first heating sub-tube (211) and the open portion on the same side of the second heating sub-tube (212) are connected via a smooth transition section (213).

10. The household appliance according to any one of claims 5 to 9, characterized in that: The area of ​​the region surrounded by the second heating sub-tube (212) is substantially the same as the wall area of ​​the water storage tank (1) where the water inlet (11) is located.

11. The household appliance according to claim 1, characterized in that: The heating assembly (2) further comprises a flange (22) for mounting the head and tail ends of the heating tube, the flange (22) also being provided with a connection terminal (221) for electrical connection of the heating tube, and the flange (22) being mounted on the wall surface of the water storage tank (1) via a fixing flange (23).

12. The household appliance according to claim 11, characterized in that: The flange (22) is also provided with a blind pipe (24), and the blind pipe (24) has a closed end (241) extending into the water storage bin (1).

13. The household appliance according to any one of claims 1 to 9, characterized in that: The water storage tank (1) is also provided with a temperature sensing device (3) for sensing water temperature. The household appliance comprises a controller electrically connected to the temperature sensing device (3) and the heating tube. The controller is configured to control the power of the heating tube accordingly according to the detection result of the temperature sensing device (3).

14. The household appliance according to claim 13, characterized in that: The household appliance further comprises at least one water level detection device (4) extending into the water storage bin (1) for detecting the water level in the water storage bin (1), wherein the water level detection device (4) is electrically connected to the controller.

15. The household appliance according to claim 13, characterized in that: The household appliance is a water purifier and heat integrated machine, a water dispenser, a water heater or a kettle.

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