Heating device and water dispenser

Abstract

The utility model discloses a heating device and a water dispenser, the heating device comprises a water tank, a water outlet pipeline, a drainage pipeline, a control valve, a heater, a water return pipeline and a first pump body, and the water tank is provided with a water outlet and a water return port; the water outlet pipeline is provided with a water inlet end and a water outlet end; the drainage pipeline is communicated with the water outlet end of the water outlet pipeline; the control valve is mounted on the drainage pipeline; the heater is positioned on the water outlet pipeline; the water return pipeline is provided with a water inlet end and a water return end, the water return pipeline is unidirectionally communicated in the flowing direction of the water tank, the water return end is connected with a water return port of the water tank, and the water inlet end of the water return pipeline is located downstream of the heater. Water heated by the heater is conveyed into the water tank again through the first pump body, so that the water in the water tank is preheated firstly, and when the water needs to be used, the water in the water tank flows to the drainage pipeline again through the heater to be used, so that the water with a certain temperature in the water tank is heated again and flows out to be used, the heating time is shortened, and the heating efficiency is improved. The flow speed of water flow is improved.

Description

Technical Field

[0001] This application relates to the field of water dispensers, and particularly to a heating device and a water dispenser. Background Art

[0002] In the water dispenser industry, electric heaters are generally used as the core component to heat the normal temperature water in the water tank to meet the user's demand for hot water or boiling water. However, this traditional heating method faces significant challenges and deficiencies in practical applications.

[0003] Specifically, when the normal temperature water in the water tank needs to be heated to the boiling state or a specific temperature set by the user, there are two main limitations. On the one hand, in order to ensure that the water temperature can quickly reach the target value, designers often have to sacrifice the water flow rate. By reducing the water flow speed and prolonging the contact time between the water flow and the electric heater, more efficient heating can be achieved. However, this directly leads to a significant reduction in the water outlet speed, and users may need to wait a long time when fetching water; on the other hand, in order to overcome the problems of small water flow rate and long heating time, the power of the electric heater is often increased. A high-power heater can heat the water to the required temperature in a shorter time, but high-power heating requires a higher power configuration and may also pose higher requirements on the user's power supply system. Summary of the Utility Model

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a heating device and a water dispenser.

[0005] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0006] This application provides:

[0007] A heating device, comprising:

[0008] A water tank having a water outlet and a water return port;

[0009] A water outlet pipeline having a water inlet end and a water outlet end, and the water inlet end is connected to the water outlet of the water tank;

[0010] A drainage pipeline communicating with the water outlet end of the water outlet pipeline;

[0011] A control valve installed on the drainage pipeline, and the control valve is used to control the on-off of the drainage pipeline;

[0012] A heater located on the water outlet pipeline, and the heater can heat the water flowing through the water outlet pipeline;

[0013] A return water pipeline, the return water pipeline having a water inlet end and a return water end, the water inlet end being communicated with the water outlet pipeline, the return water pipeline being unidirectionally conductive in the flowing direction towards the water tank, the return water end being connected to the water return port of the water tank, and the water inlet end of the return water pipeline being located downstream of the heater;

[0014] A first pump body, the first pump body being arranged and installed on the return water pipeline, the first pump body being used for conveying the water heated by the heater to the water tank;

[0015] A communication valve group, the communication valve group being installed on the water tank, the communication valve group being used for communicating the inside and outside of the water tank.

[0016] Further, a first one-way valve that is conductive in the direction of flowing through the water tank is installed on the return water pipeline.

[0017] Further, a second pump body is installed on the drain pipeline.

[0018] Further, the communication valve group includes an exhaust one-way valve and an intake one-way valve that are communicated with the inside of the water tank, the exhaust one-way valve being conductive in the direction away from the water tank, and the intake one-way valve being conductive in the direction close to the water tank.

[0019] Further, a filter element is provided at the intake port of the intake one-way valve.

[0020] Further, a water inlet pipeline is communicatively installed on the water tank, and a second one-way valve that is unidirectionally conductive in the direction of the water tank is installed on the water inlet pipeline.

[0021] Further, the control valve is an electromagnetic valve.

[0022] Further, at least one liquid level sensor is installed inside the water tank; a temperature sensor for detecting the water temperature is installed inside the water tank.

[0023] Further, the heater is lower than the water tank.

[0024] This application provides a water dispenser, including the heating device described in any one of the above.

[0025] In this application, the first pump body is used to re-convey the water heated by the heater to the water tank, so that the water in the water tank is preheated first. Then, when it is needed to use, the drain pipeline is opened through the control valve, so that the water in the water tank flows through the heater again and flows to the drain pipeline for use. Thus, the water with a certain temperature in the water tank is heated and flowed out for use again, thereby shortening the heating time and increasing the flow rate of the water flow.

[0026] To make the above objects, features, and advantages of this application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0028] Figure 1 Shows a schematic diagram of the overall structure of the present application.

[0029] Main element symbol description:

[0030] 100 - water tank; 200 - water outlet pipeline; 300 - water return pipeline; 400 - first pump body; 500 - heater; 600 - drainage pipeline; 700 - control valve; 800 - first check valve; 900 - communication valve group; 910 - exhaust check valve; 920 - intake check valve; 930 - filter element; 1000 - water inlet pipeline; 2000 - second pump body; 3000 - liquid level sensor; 4000 - temperature sensor; 5000 - second check valve. Detailed Description of the Embodiments

[0031] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0034] In this application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] In order to quickly obtain hot water, the existing heating device, affected by the power of the heating element, cannot heat the water to the predetermined temperature in a short time. On the one hand, in order to obtain water at the predetermined temperature, it is necessary to reduce the water flow rate so as to obtain the predetermined temperature; on the other hand, in order to increase the flow rate, it is necessary to increase the power of the heating element to increase the heating speed. However, this solution brings another problem, that is, it has higher requirements for the power distribution device. Therefore, this application provides a heating device.

[0037] The heating device of the present application mainly works by first closing the drain pipe 600 to connect the outlet pipe 200 with the return pipe 300. The water heated by the heater 500 is transported to the water tank 100 through the return pipe 300 to preheat the water in the water tank 100 to a certain temperature. Then, when the water at the preset temperature needs to be used, only by opening the drain pipe 600 through the control valve 700 can the water at a certain temperature in the water tank 100 be discharged. In the present application, the return pipe 300 is set to be unidirectionally conductive, so that the water in the water tank 100 cannot enter the drain pipe 600 through the return pipe 300 during use. Then, the water passing through the drain pipe 600 will be reheated by the heater 500. Since the water in the water tank 100 is already at a certain temperature, the time required for the water to reach the preset temperature is greatly reduced when reheated by the heater 500. Thus, the temperature requirement can be met under the condition of satisfying the water flow, solving the problems of small water flow and high power configuration in the prior art.

[0038] The heating device includes a water tank 100, an outlet pipe 200, a drain pipe 600, a control valve 700, a heater 500, a return pipe 300 and a first pump body 400.

[0039] The water tank 100 has a water outlet and a water return port; the outlet pipe 200 has a water inlet end and a water outlet end, and the water inlet end is connected to the water outlet of the water tank 100; the drain pipe 600 is communicated with the water outlet end of the outlet pipe 200; the control valve 700 is installed on the drain pipe 600, and the control valve 700 is used to control the on-off of the drain pipe 600; the heater 500 is located on the outlet pipe 200, and the heater 500 can heat the water flowing through the outlet pipe 200; the return pipe 300 has a water inlet end and a water return end, the water inlet end is communicated with the outlet pipe 200, the return pipe 300 is unidirectionally conductive in the flowing direction towards the water tank 100, the water return end is connected to the water return port of the water tank 100, and the water inlet end of the return pipe 300 is located downstream of the heater 500; the first pump body 400 is installed on the return pipe 300, and the first pump body 400 is used to transport the water heated by the heater 500 to the water tank 100.

[0040] Refer to Figure 1As shown, when preheating the water in the water tank 100, the control valve 700 disconnects the drain pipe 600, and the water outlet pipe 200 and the water return pipe 300 form a passage to convey the water heated by the heater 500 into the water tank 100, gradually heating the water in the water tank 100 to a certain temperature; when water at a preset temperature is needed, the drain pipe 600 is opened through the control valve 700. At this time, the water outlet pipe 200 is communicated with the drain pipe 600, and the water in the water tank 100 will be reheated by passing through the heater 500 again, thereby reducing the time required to heat the water to the preset temperature under the condition of meeting the water flow rate.

[0041] Specifically, a control valve 700 is provided on the drain pipe 600, which can be used as a faucet to open or close the drain pipe 600. On the other hand, when it is necessary to return water through the water return pipe 300, in order to enable the water heated by the heater 500 to be conveyed, the drain pipe 600 is disconnected from the outside through the control valve 700 to prevent air from entering the water return pipe 300 from the drain pipe 600.

[0042] In this embodiment, for the convenience of control, the control valve 700 is a solenoid valve, and the on-off of the drain pipe 600 can be controlled by a corresponding controller.

[0043] In this embodiment, the heater 500 heats the passing water by means of electric heating, that is, as long as it can utilize electric heating components, and the specific models and types are not limited here.

[0044] Specifically, in order to enable the water return pipe 300 to conduct unidirectionally towards the water return port of the water tank 100, a first one-way valve 800 is provided on the water return pipe 300, and unidirectional conduction is achieved through the first one-way valve 800, that is, the water flowing through the water return pipe 300 can only be communicated towards the water return port of the water tank 100, and the water from the water tank 100 cannot flow out through the water return pipe 300.

[0045] It should be noted here that the models and types of the first one-way valve 800 are not limited here. Correspondingly, the first one-way valve 800 can also adopt other structures that can achieve unidirectional conduction.

[0046] When the temperature of the water inside the water tank 100 rises, corresponding steam will be generated, causing the air pressure inside to increase. If it rises to a certain value, there is still a risk of explosion. Correspondingly, when the water tank 100 needs to be drained for use, if the water tank 100 is not connected to the outside, the water is not easily drained out, causing inconvenience to use. Therefore, in this embodiment, a connecting valve group 900 is also provided on the water tank 100. The inside of the water tank 100 is connected to the external atmosphere through the connecting valve group 900, so that the air pressure inside and outside the water tank 100 is balanced, enabling the water in the water tank 100 to flow out smoothly and also preventing the air pressure from increasing due to the rise in the water temperature inside the water tank 100.

[0047] Refer to Figure 1 As shown, a second pump body 2000 is installed on the drainage pipeline 600; when hot water needs to be used, in order to make the drainage of the drainage pipeline 600 smoother and the flow rate larger, the second pump body 2000 is used as the power for drainage, and the water is pumped out from the water tank 100. The water passes through the water channel formed by the water outlet pipeline 200 and the drainage pipeline 600 and is discharged for use. During this process, the water preheated from the water tank 100 is reheated by the heater 500 again, thereby reducing the time for the water to reach the predetermined temperature and further enabling a larger water flow rate.

[0048] The connecting valve group 900 includes an exhaust check valve 910 and an intake check valve 920 that are connected to the inside of the water tank 100. The exhaust check valve 910 conducts in the direction away from the water tank 100, and the intake check valve 920 conducts in the direction close to the water tank 100.

[0049] Refer to Figure 1 As shown, in order to balance the air pressure inside and outside the water tank 100, in this embodiment, the outside air enters the water tank 100 through the intake check valve 920, and the gas in the water tank 100 is discharged through the exhaust check valve 910.

[0050] Specifically, when the temperature of the water in the water tank 100 gradually rises, the air pressure in the water tank 100 gradually increases. Since the exhaust check valve 910 can unidirectionally connect the water tank 100 to the outside, the excess gas is discharged through the exhaust check valve 910, thereby balancing the air pressure inside and outside the water tank 100.

[0051] Furthermore, when the water in the water tank 100 needs to be drained for use, a negative pressure will be formed inside the water tank 100. Since the exhaust check valve 910 can only conduct unidirectionally from the water tank 100 to the outside, the exhaust check valve 910 will not work at this time. In order to balance the gas pressure, the outside air will enter the water tank 100 through the intake check valve 920 to balance the air pressure inside and outside the water tank 100.

[0052] Since external gas enters the water tank 100 through the intake one-way valve 920, dust and other debris in the external air may enter the water tank 100 through the intake one-way valve 920. To maintain the cleanliness of the water inside the water tank 100, a filter element 930 can be provided at the intake end of the intake one-way valve 920. The gas entering the water tank 100 through the intake one-way valve 920 is filtered by the filter element 930, so that the gas entering the water tank 100 cannot contaminate the water in the water tank 100, and the cleanliness of the water is maintained.

[0053] Refer to Figure 1 As shown, to prevent the water in the water tank 100 from being discharged through the exhaust one-way valve 910, both the exhaust one-way valve 910 and the intake one-way valve 920 are provided at the top of the water tank 100, that is, as long as they are provided above the highest water level in the water tank 100, they can be provided on the upper surface or the top side of the water tank 100. In this embodiment, the exhaust one-way valve 910 and the intake one-way valve 920 are provided on the upper surface of the water tank 100. In practice, the positions of the exhaust one-way valve 910 and the intake one-way valve 920 can be set according to needs and are not limited here.

[0054] A water inlet pipe 1000 is connected and installed on the water tank 100, and a second one-way valve 5000 that conducts unidirectionally towards the water tank 100 is installed on the water inlet pipe 1000.

[0055] Refer to Figure 1 As shown, water is supplied to the inside of the water tank 100 through the water inlet pipe 1000. To consider that the water inlet pipe 1000 is arranged below the water level inside the water tank 100 and prevent the water in the water tank 100 from flowing back through the water inlet pipe 1000, by providing the second one-way valve 5000 on the water inlet pipe 1000, the occurrence of the backflow phenomenon can be avoided, that is, the second one-way valve 5000 can only flow unidirectionally from the water inlet pipe 1000 towards the water tank 100 and is blocked in the reverse direction. In this embodiment, the water inlet pipe 1000 is arranged below the water level in the water tank 100. In other embodiments, the water inlet pipe 1000 can be arranged above the water level in the water tank 100. If the water inlet pipe 1000 is arranged above the water level of the water tank 100, the second one-way valve 5000 can be omitted.

[0056] At least one liquid level sensor 3000 is installed inside the water tank 100; a temperature sensor 4000 for detecting the water temperature is installed inside the water tank 100.

[0057] Refer to Figure 1 As shown, to ensure that there is always water inside the water tank 100, the liquid level in the water tank 100 is detected by the liquid level sensor 3000. If it is lower than the preset liquid level, water can be supplied to the water tank 100 through the water inlet pipe 1000.

[0058] In this embodiment, two liquid level sensors 3000 can be set, one for low liquid level detection and the other for high liquid level detection. That is, when the water in the water tank 100 is lower than the low liquid level detection, water is transported to the water tank 100 through the water inlet pipeline 1000, and then the water supply to the water tank 100 stops after the high liquid level is detected.

[0059] In order to obtain a predetermined water temperature in the water tank 100, the temperature of the water is detected by the temperature sensor 4000 in the water tank 100. If the detected temperature reaches the predetermined water temperature, the power supply to the first pump body 400 and the heater 500 is stopped, and thus the circulating heating of the water in the water tank 100 is stopped.

[0060] If the first pump body 400 is damaged, the water in the water tank 100 cannot be transported to the position of the heater 500. At this time, when the heater 500 is powered on, dry burning will occur. After a long time, the heater 500 will be damaged, and in severe cases, a fire may be triggered. Therefore, the position of the heater 500 can be lower than that of the water tank 100, that is, under the action of gravity, the water in the water tank 100 enters the heater 500. If the first pump body 400 is damaged, water also enters the heater 500, thus preventing dry burning and being safe and reliable.

[0061] This application also discloses a water dispenser, including the heating device described in any one of the above.

[0062] The working process of this application is as follows: First, preheat the water in the water tank 100, start the first pump body 400 and the heater 500 and close the drainage pipeline 600 through the control valve 700. The first pump body 400 transports the water from the water tank 100 to the position of the heater 500 for heating, and the heated water is re-transported to the water tank 100 through the return water pipeline 300 until the water in the water tank 100 reaches the corresponding temperature. If hot water is needed, the first pump body 400 can be closed, and at the same time, the control valve 700 and the second pump body 2000 are started. The control valve 700 opens the drainage pipeline 600, and under the action of the second pump body 2000, the water in the water tank 100 passes through the water outlet pipeline 200 and is transported to the heater 500, and is heated to the preset temperature again by the heater 500, and then the water heated again flows out through the drainage pipeline 600 for use.

[0063] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A heating device, characterized in that: include: A water tank (100), wherein the water tank (100) has a water outlet and a water return outlet; A water outlet pipeline (200), the water outlet pipeline (200) having a water inlet end and a water outlet end, the water inlet end being connected to the water outlet of the water tank (100); A drainage pipeline (600), the drainage pipeline (600) being in communication with the water outlet end of the water outlet pipeline (200); A control valve (700), the control valve (700) being installed on the drainage pipeline (600), and the control valve (700) being used to control the on-off of the drainage pipeline (600); a heater (500), the heater (500) being located on the water outlet pipeline (200), and the heater (500) being capable of heating water flowing through the water outlet pipeline (200); a water return pipeline (300), the water return pipeline (300) comprising a water inlet end and a water return end, the water inlet end being in communication with the water outlet pipeline (200), the water return pipeline (300) being unidirectionally connected in a flow direction toward the water tank (100), the water return end being connected to a water return port of the water tank (100), and the water inlet end of the water return pipeline (300) being located downstream of the heater (500); a first pump body (400), the first pump body (400) being arranged and installed on the water return pipeline (300), and the first pump body (400) being used to transport water heated by the heater (500) to the water tank (100); A connecting valve group (900), wherein the connecting valve group (900) is installed on the water tank (100), and the connecting valve group (900) is used for connecting the inside and outside of the water tank (100).

2. The heating device according to claim 1, characterized in that The water return pipeline (300) is provided with a first one-way valve (800) which is open to the direction of water flowing through the water tank (100).

3. The heating device according to claim 1, characterized in that: A second pump body (2000) is installed on the drainage pipeline (600).

4. The heating device according to claim 1, characterized in that The connecting valve group (900) comprises an exhaust check valve (910) and an air intake check valve (920) which are connected to the water tank (100); the exhaust check valve (910) is open in a direction away from the water tank (100), and the air intake check valve (920) is open in a direction close to the water tank (100).

5. The heating device according to claim 4, characterized in that: The air inlet of the air inlet check valve (920) is provided with a filter element (930).

6. The heating device according to claim 1, characterized in that: The water tank (100) is connected to a water inlet pipeline (1000), and a second one-way valve (5000) that conducts in a one-way direction toward the water tank (100) is installed on the water inlet pipeline (1000).

7. The heating device according to claim 1, characterized in that: The control valve (700) is a solenoid valve.

8. The heating device according to claim 1, characterized in that At least one liquid level sensor (3000) is installed inside the water tank (100); and a temperature sensor (4000) for detecting water temperature is installed inside the water tank (100).

9. The heating device according to claim 1, characterized in that: The heater (500) is lower than the water tank (100).

10. A water dispenser, characterized in that: A heating device comprising the heating device according to any one of claims 1 to 9.

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