A heating disc and a hot water equipment

Abstract

This utility model relates to the field of heating equipment, specifically disclosing a heating plate and a hot water device. The heating plate includes a heating plate body and a connecting pipe. A heating element is disposed on the bottom surface of the heating plate body, and a heating pipe is coiled around the top surface of the heating plate body. The connecting pipe is located on the bottom surface of the heating plate body, and the heating plate body has a connecting hole through which the connecting pipe communicates with the heating pipe. The connecting pipe is used to communicate with a water pump system. Using this utility model, scale buildup at the water inlet section of the heating plate can be reduced, ensuring that the water flow rate into the heating plate body is not affected.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment, and in particular to a heating plate and a hot water device. Background Technology

[0002] Heating plates are common heating elements in coffee machines, instant water dispensers, and other hot water appliances. Cold water is pumped into the heating pipes inside the heating plate, and as the cold water flows through the pipes, it is heated to a preset temperature for the user. However, during the pumping process, due to the impact between the cold water and the inlet section of the heating plate, scale easily accumulates on the surface of the heating plate in the inlet section. This can lead to poor water flow into the heating pipes or blockage of the inlet section of the heating plate, affecting its heating efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a heating plate and hot water equipment that can reduce scale buildup at the water inlet of the heating plate and ensure that the water flow rate into the heating plate is not affected.

[0004] To solve the above-mentioned technical problems, the first aspect of this utility model provides a heating plate, including a heating plate body and a connecting pipe. A heating element is provided on the bottom surface of the heating plate body, and a heating pipe is coiled on the top surface of the heating plate body. The connecting pipe is located on the bottom surface of the heating plate body, and the heating plate body has a communicating hole. The connecting pipe communicates with the heating pipe through the communicating hole, and the connecting pipe is used to communicate with a water pumping system.

[0005] As an improvement to the above solution, the connecting pipe includes an inlet pipe and an outlet pipe, the connecting hole forms an inlet hole and an outlet hole, the inlet pipe is connected to the inlet hole, the outlet pipe is connected to the outlet hole, and a filter element is provided between the inlet pipe and the inlet hole.

[0006] As an improvement to the above solution, the water inlet pipe near the water inlet hole forms a heating plate water inlet section, the cross-sectional area of ​​the heating plate water inlet section gradually decreases along the water inlet direction, and the minimum cross-sectional area of ​​the heating plate water inlet section is equal to the cross-sectional area of ​​the water inlet hole.

[0007] As an improvement to the above solution, a guide plate is connected to the top surface of the heating plate body, and a flow channel groove is spirally wound around the side of the heating plate body. The flow channel groove and the top surface of the heating plate body enclose the heating pipe.

[0008] As an improvement to the above solution, it also includes:

[0009] The fixing frame has a first connecting part formed on the heating plate body and a second connecting part formed on the fixing frame, and the first connecting part and the second connecting part are detachably connected.

[0010] As an improvement to the above solution, the fixing bracket forms a preset gap with the heating element on the side facing the heating plate body.

[0011] As an improvement to the above solution, the mounting bracket is equipped with a conductive electrode, which is connected to the heating element and is insulated from the mounting bracket.

[0012] As an improvement to the above solution, the fixing frame is provided with a temperature control unit, the conductive electrode is electrically connected to the temperature control unit, and the side of the temperature control unit facing the heating plate body abuts against the heating plate body.

[0013] As an improvement to the above solution, it also includes:

[0014] A temperature sensing element is installed on the fixing frame, and the sensing end of the temperature sensing element abuts against the heating plate body.

[0015] Accordingly, a second aspect of this utility model provides a hot water device, including a device body and a heating plate as described in any one of the above, wherein the heating plate is disposed at the bottom of the device body.

[0016] Implementing this utility model has the following beneficial effects:

[0017] In this embodiment, the heating pipe is arranged on the top surface of the heating plate, and the connecting pipe connecting the water pump system is arranged on the bottom surface of the heating plate. The connecting pipe and the heating pipe are connected through a connecting hole, so that cold water is pumped from the lower connecting pipe into the upper heating pipe through the water pump system. When water enters, the water flow continuously flushes the inner wall of the upper heating pipe through the connecting hole, thereby slowing down the deposition rate of scale on the inner wall of the heating pipe. This reduces scale buildup at the water inlet section of the heating plate, ensures that the water flow rate of the heating plate is not affected, effectively avoids the problem of dry burning of the heating plate, and guarantees the heating efficiency of the heating plate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the heating plate in this utility model;

[0019] Figure 2 This is an exploded structural diagram of the heating plate in this utility model;

[0020] Figure 3 This is a side view of the connection between the heating plate body and the fixing frame in this utility model;

[0021] Figure 4This is an exploded structural diagram of the heating plate body and the flow guide plate in this utility model;

[0022] Figure 5 This is a cross-sectional view of the water inlet pipe in this utility model.

[0023] Figure 6 This is a three-dimensional connection diagram of the fixing frame and the heating plate body in this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0025] The first aspect of this utility model provides a heating plate, such as... Figure 1 , Figure 2 and Figure 6 As shown, the heating plate includes a heating plate body 1 and a connecting pipe 2. A heating element 11 is provided on the bottom surface of the heating plate body 1, and a heating pipe 12 is coiled on the top surface of the heating plate body 1. The connecting pipe 2 is located on the bottom surface of the heating plate body 1, and the heating plate body 1 has a connecting hole 13. The connecting pipe 2 is connected to the heating pipe 12 through the connecting hole 13, and the connecting pipe 2 is used to connect to the water pumping system.

[0026] In this embodiment, the heating pipe 12 is arranged on the top surface of the heating plate body 1, and the connecting pipe 2 connecting the water pump system is arranged on the bottom surface of the heating plate body 1. The connecting pipe 2 and the heating pipe 12 are connected through the connecting hole 13, so that cold water is pumped from the lower connecting pipe 2 into the upper heating pipe 12 through the water pump system. When water enters, the water flow continuously flushes the inner wall of the upper heating pipe 12 through the connecting hole 13, thereby slowing down the deposition rate of scale on the inner wall of the heating pipe 12, reducing the scale accumulation at the water inlet section 211 of the heating plate, ensuring that the water inlet flow of the heating plate body 1 is not affected, effectively avoiding the problem of dry burning of the heating plate, and ensuring the heating efficiency of the heating plate.

[0027] Specifically, such as Figure 1 and Figure 2As shown, the connecting pipe 2 includes an inlet pipe 21 and an outlet pipe 22. The connecting hole 13 forms an inlet hole 131 and an outlet hole 132. The inlet pipe 21 is connected to the inlet hole 131, and the outlet pipe 22 is connected to the outlet hole 132. The pumping system pumps cold water into the heating pipe 12 through the inlet pipe 21 and the inlet hole 131 to heat the water flow for the heating plate and conduct heat to the hot water equipment. A filter element is installed between the inlet pipe 21 and the inlet hole 131. The filter element can intercept large particulate impurities such as suspended particles in the cold water, thereby preventing large particulate impurities from clogging the inlet pipe 21 and the inlet hole 131, improving the water quality entering the heating pipe 12, and further slowing down the rate of scale deposition on the inner wall of the heating pipe 12.

[0028] Preferably, the filter element is a screen-like filter such as a filter screen set at the water inlet pipe 21, and the filter element is a filter head that can be unscrewed or plugged in, so that the filter element can be integrated and arranged at the water inlet pipe 21, making it convenient for users to regularly check and clean the filter element.

[0029] It should also be noted that the inlet pipe 21 and the outlet pipe 22 can be stainless steel pipes, which are connected to the connecting hole 13 through a sealing joint.

[0030] Furthermore, it should be noted that since the inlet pipe 21 is located below the heating pipe 12, when pumping water into the inlet pipe 21 and the heating pipe 12 using the pumping system, it is necessary to overcome the gravity of the water flow rising from a lower to a higher position, which may increase the energy consumption of the pumping system. To reduce the energy consumption of the pumping system, in another embodiment, such as... Figure 5 As shown, the water inlet pipe 21 near the water inlet hole 131 forms the heating plate water inlet section 211. The cross-sectional area of ​​the heating plate water inlet section 211 gradually decreases along the water inlet direction, and the minimum cross-sectional area of ​​the heating plate water inlet section 211 is equal to the cross-sectional area of ​​the water inlet hole 131, resulting in a tapered section structure in the internal pipe of the heating plate water inlet section 211. When water flows through the heating plate water inlet section 211, the water flow velocity increases, forming a low-pressure area at the heating plate water inlet section 211 and the water inlet hole 131. This area has an adsorption effect on the water flow that does not enter the heating plate water inlet section 211, thereby assisting the pumping system in sending water into the upper heating pipe 12, reducing the load on the pumping system, and achieving the purpose of reducing the energy consumption of the pumping system to a certain extent.

[0031] Preferably, the taper angle of the heating plate water inlet section 211 is less than 15° to ensure that the heating plate water inlet section 211 tapers gently and avoids fluid separation and eddy currents when the water flows through the heating plate water inlet section 211, which would cause additional energy loss.

[0032] In embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4As shown, a guide plate 14 is connected to the top surface of the heating plate body 1. The guide plate 14 has a spiral channel groove 141 spirally wound around the side of the heating plate body 1. The channel groove 141 and the top surface of the heating plate body 1 form a heating pipe 12 to extend the water flow path and residence time, ensuring sufficient heating while reducing local overheating on the top surface of the heating plate body 1 and reducing the rate of scale precipitation during heating water flow.

[0033] In addition, when it is necessary to descale the heating plate, the flow guide plate 14 can be removed from the heating plate body 1, and the flow channel groove 141 of the heating plate body 1 and the flow guide plate 14 can be descaled separately, which is convenient for operation.

[0034] In embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the heating plate also includes a fixing frame 3. The heating plate body 1 has a first connecting part 15, and the fixing frame 3 has a second connecting part 31. The first connecting part 15 and the second connecting part 31 are detachably connected to each other so that the fixing frame 3 and the heating plate body 1 can be detachably connected. Thus, the heating plate can be assembled into a coffee machine, an instant hot water dispenser, or an electric kettle and other hot water appliances using the fixing frame 3.

[0035] As a concrete example, such as Figure 2 As shown, the first connecting part 15 is a cylindrical protrusion formed on the side of the heating plate body 1, and the cylindrical protrusion has a mounting hole. The second connecting part 31 is a threaded protrusion formed on the fixing frame 3. The cylindrical protrusion and the threaded protrusion are connected by fasteners such as bolts or studs to complete the connection between the heating plate and the fixing frame 3.

[0036] As a preferred embodiment, such as Figure 3 As shown, the side of the mounting bracket 3 facing the heating plate body 1 forms a preset gap 32 with the heating element 11. This preset gap 32 prevents direct contact between the heating element 11 and the mounting bracket 3, reduces the heat transfer rate between the heating element 11 and the mounting bracket 3, and ensures that the heat generated by the heating element 11 can be conducted through the heating plate to the heating pipe 12 of the guide member, and heats the water flow in the heating pipe 12, thus ensuring the heat utilization efficiency of the heating plate. When the second connecting part 31 is a threaded protrusion formed on the mounting bracket 3, the width of the preset gap 32 is preferably equal to the height of the threaded protrusion.

[0037] Furthermore, it should be noted that the heating element 11 is a thick-film circuit laid on the bottom surface of the heating plate body 1. The thick-film circuit forms a resistive layer on the bottom surface of the heating plate body 1, and heat is generated through the conduction of the resistive layer. Then, through the heat conduction of the heating plate body 1, the water flow in the heating pipe 12 is heated. The hot water flow in the heating pipe then exchanges heat with the water flow to be heated in the hot water appliance through heat conduction or heat radiation to meet the user's hot water needs.

[0038] Specifically, such as Figure 6 As shown, the mounting bracket 3 is equipped with a conductive electrode 33, which is connected to the heating element 11 and is insulated from the mounting bracket 3. The conductive electrode 33 is used to electrically connect the heating element 11 to the external circuit, so as to facilitate the conduction of heat through the resistive layer formed by the heating element 11.

[0039] Of course, in other embodiments, the heating element 11 may also be an electric heating tube or other heating element 11, and can be selected and set according to the actual situation.

[0040] It should also be noted that the mounting bracket 3 is equipped with two conductive electrodes 33, one of which serves as the positive electrode of the heating plate and the other as the negative electrode of the heating plate, so as to ensure that the heating element 11 can form a current loop with the external circuit through the two conductive electrodes 33.

[0041] In this embodiment, as Figure 6 As shown, the mounting bracket 3 is equipped with a temperature control unit 34. The conductive electrode 33 is electrically connected to the temperature control unit 34, and the side of the temperature control unit 34 facing the heating plate body 1 abuts against the heating plate body 1. The temperature control unit 34 can be an automatic reset temperature controller. The automatic reset temperature controller can automatically disconnect the electrical connection between the conductive electrode 33 and the heating element 11 when the temperature of the heating plate body 1 exceeds a set value (e.g., 100°C), causing the heating plate body 1 to stop heating the water flow; and automatically reset and reconnect the electrical connection between the conductive electrode 33 and the heating element 11 when the temperature drops, causing the heating plate body 1 to resume heating, thus achieving constant temperature control of the heating plate.

[0042] In this embodiment, as Figure 6 As shown, the heating plate also includes a temperature detection element 35, which is mounted on the mounting bracket 3, and the detection end of the temperature detection element 35 abuts against the heating plate body 1. A maximum temperature safety threshold (e.g., 120℃) can be set in the heating plate. When the temperature detection element 35 detects that the temperature of the heating plate body 1 reaches the maximum temperature safety threshold, the temperature detection element 35 can provide feedback to control the conductive electrode 33 to cut off the power, thus providing final protection for the heating plate in cases of dry burning, circuit breakage, etc., and avoiding safety hazards.

[0043] Accordingly, a second aspect of this utility model provides a hot water device, which includes a device body and a heating plate as described in any of the above embodiments, the heating plate being disposed at the bottom of the device body. All the beneficial effects of the hot water device including the aforementioned heating plate will not be elaborated further here. Furthermore, the hot water device can be a coffee machine, an instant water faucet, or an electric kettle, etc., and the heating plate can be fixed to the device body via a fixing bracket 3.

[0044] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A heating plate, characterized in that, The device includes a heating plate and a connecting pipe. The bottom surface of the heating plate is provided with a heating element, and the top surface of the heating plate is wrapped with a heating pipe. The connecting pipe is located on the bottom surface of the heating plate, and the heating plate has a connecting hole. The connecting pipe is connected to the heating pipe through the connecting hole and is used to connect to a water pumping system.

2. The heating plate as described in claim 1, characterized in that, The connecting pipe includes an inlet pipe and an outlet pipe. The connecting hole forms an inlet hole and an outlet hole. The inlet pipe is connected to the inlet hole, and the outlet pipe is connected to the outlet hole. A filter element is provided between the inlet pipe and the inlet hole.

3. The heating plate as described in claim 2, characterized in that, The water inlet pipe near the water inlet hole forms a heating plate water inlet section. The cross-sectional area of ​​the heating plate water inlet section gradually decreases along the water inlet direction, and the minimum cross-sectional area of ​​the heating plate water inlet section is equal to the cross-sectional area of ​​the water inlet hole.

4. The heating plate as described in claim 1, characterized in that, A flow guide plate is connected to the top surface of the heating plate body. The flow guide plate has a flow channel groove spirally wound around the side of the heating plate body. The flow channel groove and the top surface of the heating plate body enclose the heating pipe.

5. The heating plate as described in claim 1, characterized in that, Also includes: The fixing frame has a first connecting part formed on the heating plate body and a second connecting part formed on the fixing frame, and the first connecting part and the second connecting part are detachably connected.

6. The heating plate as described in claim 5, characterized in that, The mounting bracket forms a predetermined gap with the heating element on the side facing the heating plate.

7. The heating plate as described in claim 5, characterized in that, The mounting bracket is equipped with a conductive electrode, which is connected to the heating element and is insulated from the mounting bracket.

8. The heating plate as described in claim 7, characterized in that, The mounting bracket is equipped with a temperature control unit, the conductive electrode is electrically connected to the temperature control unit, and the side of the temperature control unit facing the heating plate body abuts against the heating plate body.

9. The heating plate as described in claim 5, characterized in that, Also includes: A temperature sensing element is installed on the fixing frame, and the sensing end of the temperature sensing element abuts against the heating plate body.

10. A hot water device, characterized in that, It includes a device body and a heating plate as described in any one of claims 1 to 9, wherein the heating plate is disposed at the bottom of the device body.

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