Electric thermos bottle

Abstract

The utility model discloses an electric hot water bottle, which relates to the technical field of household appliances, and comprises an inner container, a heating element, a vane pump and an exhaust component, and the inner container is provided with a water outlet; the heating element is used for heating liquid in the inner container; the vane pump is provided with a water inlet and a pump cavity communicated with the water inlet, and the water outlet is communicated with the water inlet through a water outlet channel; the exhaust assembly comprises an exhaust device, and the exhaust device is communicated with the water outlet channel so as to adjust the pressure at the water inlet; according to the technical scheme, the water outlet reliability of the electric hot water bottle can be improved.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to an electric water bottle. Background Technology

[0002] Existing electric water heaters use a vane pump to draw water from the inner tank to the outlet. During use, adding water to an empty inner tank can create an air column in the connection between the inner tank and the vane pump. Alternatively, drawing heated water from the inner tank can cause hot water carrying air bubbles to enter the vane pump, filling it with air. This air prevents water from flowing from the inner tank to the vane pump, reducing its suction efficiency and resulting in the vane pump running dry without dispensing water.

[0003] In existing technologies, to solve the problem of the vane pump not producing water when running dry, it is necessary to repeatedly start and stop the water dispensing button, or open the lid of the electric water bottle to release steam after the water boils, or wait for a few minutes. This affects the user experience and is not conducive to eliminating the safety hazards of the electric water bottle. Utility Model Content

[0004] The main purpose of this invention is to provide an electric water bottle that improves the reliability of water dispensing.

[0005] To achieve the above objectives, the electric water bottle proposed in this utility model includes:

[0006] The inner tank is equipped with a water outlet;

[0007] A heating element for heating the liquid inside the inner tank;

[0008] A vane pump, comprising an inlet and a pump chamber communicating with the inlet, wherein the outlet is connected to the inlet via an outlet channel; and

[0009] An exhaust assembly includes an exhaust device connected to the water outlet channel to regulate the pressure at the water inlet.

[0010] In one embodiment, the exhaust device includes an adjusting member having a volume-adjustable chamber that communicates with the water outlet channel.

[0011] In one embodiment, the adjusting member is an elastic member.

[0012] In one embodiment, the venting assembly further includes an vent pipe, at least a portion of which extends from bottom to top, one end of which is connected to the water outlet channel and the other end of which is connected to the venting device.

[0013] In one embodiment, the top wall of the chamber is higher than the highest water level of the inner liner.

[0014] In one embodiment, the exhaust device further includes a button connected to the adjusting member for providing a force to the adjusting member.

[0015] In one embodiment, the button is located above the adjustment member.

[0016] In one embodiment, the electric water bottle further includes a connecting pipe, one end of which is connected to the inner liner and the other end of which is connected to the vane pump. The connecting pipe and the exhaust pipe are integral parts.

[0017] In one embodiment, the electric water bottle further includes a controller, and the venting device is electrically connected to the controller.

[0018] In one embodiment, the electric water bottle further includes a pressure detection device, which is electrically connected to the controller.

[0019] In one embodiment, the electric water bottle further includes a water outlet device, which is connected to the vane pump via a water outlet pipe.

[0020] In one embodiment, the heating element is connected to the inner liner.

[0021] In the technical solution of this utility model, an exhaust component is set in front of the inlet of the vane pump, which can effectively remove the gas in the vane pump before starting and during operation, ensuring that the liquid in the inner tank flows smoothly to the vane pump. At the same time, it effectively reduces the pressure at the inlet, which is conducive to improving the suction efficiency of the vane pump, thereby improving the water output reliability of the electric water bottle. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the electric water bottle provided by this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of an embodiment of the electric water bottle provided by this utility model.

[0025] Explanation of icon numbers:

[0026] 10. Inner liner;

[0027] 20. Heating element;

[0028] 30. Vane pump; 31. Inlet;

[0029] 40. Exhaust assembly; 41. Exhaust device; 411. Adjustment component; 412. Button; 42. Exhaust pipe;

[0030] 51. Connecting pipe; 52. Water outlet pipe;

[0031] 60. Water outlet device.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] Existing electric water heaters use a vane pump to draw water from the inner tank to the outlet. During use, adding water to an empty inner tank can create an air column in the connection between the inner tank and the vane pump. Alternatively, drawing heated water from the inner tank can cause hot water carrying air bubbles to enter the vane pump, filling it with air. This air prevents water from flowing from the inner tank to the vane pump, reducing its suction efficiency and resulting in the vane pump running dry without dispensing water.

[0037] In the existing technology, in order to solve the problem of the vane pump running dry without producing water, it is necessary to start and stop the water dispensing button multiple times, or open the lid to release water vapor after the water in the electric kettle boils, or wait for a few minutes. This will affect the user experience and will not help to eliminate the safety hazards of the electric kettle. The specific safety hazard is that the user may be scalded when the lid is opened to release water vapor.

[0038] To solve this technical problem, this utility model proposes an electric water bottle.

[0039] Please see Figures 1 to 2 In one embodiment of this utility model, the electric water bottle includes an inner liner 10, a heating element 20, a vane pump 30, and an exhaust assembly 40. The inner liner 10 is provided with a water outlet; the heating element 20 is used to heat the liquid inside the inner liner 10; the vane pump 30 is provided with a water inlet 31 and a pump chamber communicating with the water inlet 31, and the water outlet is communicated with the water inlet 31 through a water outlet channel; the exhaust assembly 40 includes an exhaust device 41, which is communicated with the water outlet channel to adjust the pressure at the water inlet 31; thereby improving the reliability of water output from the electric water bottle.

[0040] In the technical solution of this utility model, an exhaust component 40 is provided in front of the water inlet 31 of the vane pump 30, which can effectively remove the gas in the vane pump 30 before starting and during operation, ensuring that the liquid in the inner tank 10 flows smoothly to the vane pump 30. At the same time, it effectively reduces the pressure at the water inlet 31, which is conducive to improving the suction efficiency of the vane pump 30, thereby improving the water output reliability of the electric water bottle.

[0041] Specifically, the vane pump 30 can be connected to the water outlet device 60 via the water outlet pipe 52. When the user is using the electric water bottle, the user can place the container for holding liquids such as water under the water outlet device 60. Then, under the pumping of the vane pump 30, the liquid in the inner tank 10 passes through the vane pump 30 and the water outlet pipe 52 in sequence, and then flows out of the water outlet device 60 and into the container.

[0042] It should be noted that the heating element 20 is used to heat the liquid inside the inner liner 10. This does not specifically mean that the heating element 20 is directly inserted into the inner liner 10 to heat the liquid inside. Alternatively, the heating element 20 can be located outside the inner liner 10 and heat the liquid flowing out from the outlet of the inner liner 10.

[0043] Specifically, the heating element 20 is disposed inside the inner tank 10, or on the outer surface of the inner tank 10, or it is not directly connected to the inner tank 10. For example, the heating element 20 is disposed in the water outlet pipe connected to the water outlet of the inner tank 10 to heat the water flowing from the inner tank 10 to the water outlet pipe. It can be understood that the heating element 20, regardless of its location, can heat and boil the liquid inside the inner tank 10, thus meeting the user's hot water needs.

[0044] In this embodiment, the heating element 20 is connected to the inner liner 10, and the inner liner 10 has a water outlet, specifically located at the bottom of the inner liner 10, to ensure the complete outflow of water from the inner liner 10. Since the water outlet is connected to the water inlet 31 through the water outlet channel, the liquid in the inner liner 10 is heated by the heating element 20 to generate some water vapor. The liquid and water vapor (collectively referred to as the liquid mixture) enter the water outlet channel through the water outlet and flow into the vane pump 30. At this time, since the exhaust device 41 is connected to the water outlet channel, the generated water vapor is discharged from the electric water bottle under the action of the exhaust device 41, and the generated hot liquid enters the pump chamber of the vane pump 30 through the water inlet 31 and flows out of the electric water bottle. In this process, the water outlet channel can be composed of at least the internal channel of the connecting pipe 51 connecting the inner liner 10 and the vane pump 30, and the water inlet channel in front of the pump chamber of the vane pump 30. With the setting of the exhaust component 40, the normal operation of the vane pump 30 is ensured, thereby improving the reliability of water output from the electric water bottle.

[0045] Optionally, in an embodiment of this utility model, the exhaust device 41 includes an adjusting member 411, which has a volume-adjustable chamber. The chamber is connected to the water outlet channel. It is understood that when the temperature of the liquid inside the electric water bottle remains constant, the air pressure and volume are inversely proportional. Since the chamber is connected to the water outlet channel, the inner liner 10 and the vane pump 30 are connected to the atmosphere. By adjusting the volume of the chamber, i.e. compressing the internal space of the chamber, the internal air pressure of the electric water bottle is increased. The gas in the water outlet channel will be pushed towards the water outlet by the increased pressure and discharged from the inner liner 10, and / or discharged through the water inlet 31 by the vane pump 30, thereby realizing the discharge of gas. Thus, it is reliably ensured that the liquid is drawn out of the electric water bottle under the action of the vane pump 30 to meet the user's water demand.

[0046] In one embodiment, the adjusting member 411 is an elastic member because it has an adjustable volume chamber. In this case, the adjusting member 411 is made entirely of an elastomeric material, such as rubber or silicone, to form an elastic cavity so that gas can be collected and discharged through the expansion and contraction of the elastic cavity. Alternatively, the adjusting member 411 may be partially made of an elastomeric material, such as a compression sealing strip. In another embodiment, the adjusting member 411 is configured as a piston structure.

[0047] Optionally, in an embodiment of this utility model, the exhaust assembly 40 further includes an exhaust pipe 42, at least a portion of which extends from bottom to top. One end of the exhaust pipe 42 is connected to the water outlet channel, and the other end is connected to the exhaust device 41. On the one hand, because the exhaust pipe 42 is connected to the water outlet channel, the pressure in the water outlet channel can be adjusted by changing the pressure between the exhaust pipe 42 and the adjusting member 411. On the other hand, the exhaust device 41 is far from the water outlet channel, making it easier for gas to rise and approach the exhaust device 41, reducing the amount of gas in the water outlet channel. Simultaneously, it allows the exhaust device 41 to approach the outer wall of the electric water bottle, or even penetrate through it, thus facilitating manual activation of the exhaust device 41 by the user, enabling adjustable chamber volume. However, in other embodiments, the adjusting member 411 forms part of the water outlet channel.

[0048] Specifically, in an embodiment of this invention, the top wall of the chamber is higher than the highest water level line of the inner liner 10, thus providing a larger space to collect and expel air. Compared to compressed liquid, air is easily compressed, allowing the electric kettle to quickly expel air from the water outlet channel. The highest water level line of the inner liner 10 is typically located at the top of the inner liner 10.

[0049] Please see Figure 1 In an embodiment of this utility model, the exhaust device 41 further includes a button 412, which is connected to the adjusting member 411 and used to provide force to the adjusting member 411. At this time, the button 412 can be exposed or protruding from the outer wall of the electric water bottle. Before dispensing liquid, the user can trigger the button 412, for example, by pressing the button 412, to transmit the force on the button 412 to the adjusting member 411, causing a change in the volume of the chamber within the adjusting member 411. This, in turn, discharges excess gas from the water outlet channel or the vane pump 30, reducing the pressure at the inlet 31 of the vane pump 30 and improving the suction efficiency of the vane pump 30. This solves the problem of the vane pump 30 running dry without dispensing water, improving the reliability and safety of the electric water bottle's water dispensing. In this embodiment of the utility model, the button 412 is located above the adjusting member 411 for easy triggering by the user. However, in other embodiments, the button 412 may also be located on the side of the adjusting member 411.

[0050] Optionally, in an embodiment of this utility model, the electric water bottle further includes a connecting pipe 51, one end of which is connected to the inner liner 10 and the other end is connected to the vane pump 30. The connecting pipe 51 and the exhaust pipe 42 are integral parts. In this case, the connecting pipe 51 and the exhaust pipe 42 form a three-way pipe, which can reduce the assembly steps and the number of parts to a certain extent and improve the assembly efficiency.

[0051] Please see Figure 1In an embodiment of this utility model, the electric water bottle further includes a controller, and the venting device 41 is electrically connected to the controller to realize automatic venting of the electric water bottle. The controller acts as a control center, used to switch the venting device 41 between an on / off state and a off state. The venting device 41 can achieve venting by compressing gas from the water outlet channel to the inner tank 10 and / or the vane pump 30; alternatively, the venting device 41 can achieve venting by directly extracting gas from the water outlet channel and venting it to the atmosphere. The venting device 41 specifically includes, but is not limited to, an air pump and a venting valve.

[0052] The electric water bottle includes a connecting pipe 51 and an exhaust pipe 42 connected to an exhaust device 41. One end of the connecting pipe 51 is connected to the inner liner 10, and the other end is connected to the vane pump 30. The exhaust pipe 42 is located between the inner liner 10 and the vane pump 30, and one end is connected to the connecting pipe 51, and the other end is connected to the exhaust pipe 42. The exhaust pipe 42 can extend at least partially from bottom to top to facilitate the discharge of gas.

[0053] After each heating cycle, the exhaust device 41 can exhaust the gas in a phased start-stop manner. Understandably, after each heating cycle, the controller controls the exhaust device 41 to start and stop n times, where 1≤n≤3. One start and one stop constitutes one control cycle, and the start duration of the exhaust device 41 is t1, the stop duration is t2, t1>0, t2>0. Furthermore, it is limited to 1s≤t1≤5s, 0.5s≤t2≤3s to ensure reliable exhaust of the electric water bottle.

[0054] Furthermore, in an embodiment of this utility model, the electric water bottle also includes a pressure detection device, which is electrically connected to the controller. Thus, when the pressure detection device detects that the pressure exceeds the rated value, the controller controls the exhaust device 41 to work, that is, automatically starts the exhaust function of the electric water bottle, thereby improving the automation level of the electric water bottle.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electric water heater, characterized in that, include: The inner tank is equipped with a water outlet; A heating element for heating the liquid inside the inner tank; A vane pump is provided with an inlet and a pump chamber connected to the inlet, and the outlet is connected to the inlet through an outlet channel; as well as An exhaust assembly includes an exhaust device connected to the water outlet channel to regulate the pressure at the water inlet.

2. The electric water bottle as described in claim 1, characterized in that, The exhaust device includes an adjusting member having a volume-adjustable chamber that is connected to the water outlet channel.

3. The electric water bottle as described in claim 2, characterized in that, The adjusting element is an elastic element.

4. The electric water bottle as described in claim 2, characterized in that, The exhaust assembly also includes an exhaust pipe, at least a portion of which extends from bottom to top. One end of the exhaust pipe is connected to the water outlet channel, and the other end is connected to the exhaust device.

5. The electric water bottle as described in claim 4, characterized in that, The top wall of the chamber is higher than the highest water level of the inner liner.

6. The electric water bottle as described in claim 4, characterized in that, The exhaust device also includes a button connected to the adjusting member for applying force to the adjusting member.

7. The electric water bottle as described in claim 6, characterized in that, The button is located above the adjustment component.

8. The electric water bottle as described in claim 4, characterized in that, The electric water bottle also includes a connecting pipe, one end of which is connected to the inner liner and the other end is connected to the vane pump. The connecting pipe and the exhaust pipe are an integral part.

9. The electric water bottle as described in claim 1, characterized in that, The electric water bottle also includes a controller, and the exhaust device is electrically connected to the controller.

10. The electric water bottle as described in claim 9, characterized in that, The electric water bottle also includes a pressure detection device, which is electrically connected to the controller.

11. The electric water bottle as described in claim 1, characterized in that, The electric water bottle also includes a water outlet device, which is connected to the vane pump via a water outlet pipe; And / or, the heating element is connected to the inner liner.

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