A rapid heating device with multi-stage heating

Abstract

The utility model discloses a kind of fast heating device with multistage heating, including heating pipeline, at least two first heating parts and a second heating part sequentially arranged along water flow direction;The first heating part has the heating cavity and buffer cavity for water flow to flow through sequentially, the heating cavity is used to heat the water flow that flows through, the overflow section area of the buffer cavity is greater than the overflow section area of heating cavity, the buffer cavity is used to eliminate bubble in water flow, the shell is provided with exhaust hole between heating cavity and buffer cavity and the one-way valve is arranged in the exhaust hole;The second heating part is cylindrical hollow heating pipe structure.The utility model adopts multiple heating parts to heat water flow gradually, thereby effectively avoids thousand boiling water, ensures that hot water efficiency and flow rate;While the structure of first heating part ensures that it does not occur jet in high-power state work, to ensure that fast heating device can realize large flow rate hot water.

Description

Technical Field

[0001] This utility model relates to the technical field of hot water equipment, and in particular to a rapid heating device with multi-stage heating. Background Technology

[0002] More and more drinking water and water purification products are equipped with hot water functions. For scenarios requiring hot water, the temperature and flow rate of the hot water are generally considered important product indicators. Existing hot water equipment generally uses two heating methods: hot tank heating and rapid heating module heating. For hot tank heating, the problem of repeatedly boiled water cannot be avoided. At the same time, due to the limited capacity of the hot tank, it is impossible to continuously produce a large flow of hot water, and the hot water temperature cannot be adjusted, which has certain limitations. For rapid heating module heating, water is heated by flowing through an instant heating element (such as a PTC ceramic tube). However, its hot water flow rate is limited by the power of the heating element itself, so it cannot heat water at a large flow rate. At the same time, the heating element is also prone to safety problems such as jetting when operating at high power. Utility Model Content

[0003] The present invention aims to overcome the defects in the prior art by providing a rapid heating device with multi-stage heating. Its multiple heating elements heat the water in stages to gradually increase the water temperature, thereby effectively avoiding the problem of repeatedly boiled water and greatly improving the efficiency and flow rate of hot water output. At the same time, the structure of the first heating element ensures that it does not produce jets when operating at high power, thus ensuring that the rapid heating device can achieve a large flow rate of hot water output.

[0004] To achieve the above objectives, this utility model provides a rapid heating device with multi-stage heating, including a heating pipeline, wherein at least two first heating elements and one second heating element are arranged sequentially from front to back along the water flow direction.

[0005] The first heating element includes a housing, which is configured to have a heating chamber and a buffer chamber through which water flows sequentially. The heating chamber is used to heat the flowing water. The flow cross-sectional area of ​​the buffer chamber is larger than that of the heating chamber. The buffer chamber is used to eliminate air bubbles in the water. The housing is provided with an exhaust hole between the heating chamber and the buffer chamber, and a one-way valve is provided in the exhaust hole.

[0006] The second heating element is a cylindrical hollow heating tube structure.

[0007] The further configuration is as follows: an annular heating element is embedded in the heating cavity of the outer shell, and the inner hole of the heating element defines the flow cross section of the water supply through the heating cavity.

[0008] The heating element is further configured to be a thick-film heating element or a dual-crystal heating element.

[0009] Further configuration: The second heating element is a PTC ceramic tube.

[0010] A further feature is provided: a temperature probe is provided on the outlet side of each heating element in the heating pipeline.

[0011] Further configuration includes a control module and a water pump, wherein the water pump, the second heating element, all the first heating elements, and all temperature probes are signal-connected to the control module, and the water pump is correspondingly installed on the heating pipe in front of the first heating element;

[0012] The control module is pre-set with different set temperatures required for different outlet water temperatures of all heating elements. The control module adjusts the power of the corresponding heating element and / or the flow rate of the water pump by comparing the temperature data fed back by the temperature probe with the corresponding set temperature.

[0013] The control module is further configured to adjust the power of the heating element sequentially from back to front according to the water flow direction.

[0014] Compared with existing technologies, this utility model has a simple and reasonable structure. It heats the water in stages through multiple heating elements to gradually increase the water temperature, thereby effectively avoiding the problem of repeatedly boiled water and greatly improving the efficiency and flow rate of hot water output. At the same time, the structure of the first heating element ensures that it does not produce steam when operating at high power, thus ensuring that the rapid heating device can achieve a large flow rate of hot water output. Furthermore, by using a temperature probe in conjunction with a control module to adjust the power of the heating elements and the water pump flow rate, the hot water temperature output by the rapid heating device can be controlled. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a rapid heating device with multi-stage heating according to the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the first heating element;

[0017] Figure 3 This is a schematic diagram of the control logic of the rapid heating device.

[0018] The following reference numerals are marked on the accompanying drawings:

[0019] 10. Heating pipe; 20. Water pump; 30. First heating element; 31. Outer shell; 32. Heating chamber; 33. Buffer chamber; 34. Heating body; 35. Exhaust port; 36. One-way valve; 37. Primary heating element; 38. Secondary heating element; 40. Secondary heating element; 41. Tertiary heating element; 51. Primary temperature probe; 52. Secondary temperature probe; 53. Tertiary temperature probe. Detailed Implementation

[0020] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0021] This utility model discloses a rapid heating device with multi-stage heating, such as... Figure 1 As shown, the device includes a heating pipe 10, which is provided with a water pump 20, at least two first heating elements 30 and a second heating element 40 in sequence from front to back along the water flow direction. The water pump 20 pumps water so that the water flows through the at least two first heating elements 30 and the second heating element 40 in sequence. The water flow is heated step by step by multiple heating elements so that the water temperature gradually rises to the final required temperature. This avoids the formation of repeatedly boiled water and can effectively improve the hot water output efficiency and hot water flow rate.

[0022] In this embodiment, as Figure 1 and Figure 2 As shown, the heating pipe 10 is equipped with two first heating elements 30 and one second heating element 40, which are named first-stage heating element 37, second-stage heating element 38, and third-stage heating element 41 respectively from front to back along the water flow direction. The first-stage heating element 37 and the second-stage heating element 38 are both first heating elements 30 with the same structure, each including a shell 31 supported by insulating and heat-resistant material. This shell 31 is constructed with a heating chamber 32 and a buffer chamber 33 through which the water flows sequentially. The heating chamber 32 is used to heat the flowing water. The flow cross-sectional area of ​​the buffer chamber 33 is larger than that of the heating chamber 32. The first heating element 30 is used to collect the water heated by the front heating chamber 32 and eliminate the air bubbles therein. The outer shell 31 is also provided with an exhaust port 35 between the heating chamber 32 and the buffer chamber 33, and a one-way valve 36 is provided in the exhaust port 35. The exhaust port 35 is used to exhaust air during the heating process to prevent air jet caused by the accumulation of air bubbles. The one-way valve 36 limits the gas inside the outer shell 31 to be discharged and restricts the gas outside the outer shell 31 from entering the outer shell 31, thus ensuring the sealing of the inside of the first heating element 30. The second heating element 40 is a conventional cylindrical hollow heating tube structure, preferably a PTC ceramic tube, which heats the water flowing through the inner cavity of the heating tube.

[0023] In the above scheme, the cross-sectional shape of the heating cavity 32 and the cross-sectional shape of the buffer cavity 33 of the outer shell 31 are both circular. A circular heating element 34 is fixedly embedded in the heating cavity 32. The inner hole in the middle of the heating element 34 defines the flow section of the heating cavity 32, that is, the inner diameter of the inner hole of the heating element 34 is smaller than the inner diameter of the cavity of the buffer cavity 33. The heating element 34 is preferably a thick film heating component or a dual crystal heating component.

[0024] In this embodiment, as Figure 1 and Figure 3As shown, each heating element in the heating pipe 10 is equipped with a temperature probe at its outlet. The number of temperature probes is equal to the number of heating elements, used to detect the outlet water temperature of the corresponding heating element. These are respectively designated as primary temperature probe 51, secondary temperature probe 52, and tertiary temperature probe 53. The rapid heating device also includes a control module that is signal-connected to the water pump 20, the second heating element 40, all temperature probes, and all first heating elements 30. This control module has preset different set temperatures required for different outlet water temperatures of each heating element (for example, the set temperature of the primary heating element 37 is 50℃ for 100℃ boiling water). The set temperature of the secondary heating element 38 is 80℃, and the set temperature of the tertiary heating element 41 is 100℃ (increasing in a stepwise manner). The power of the corresponding heating element and / or the flow rate of the water pump 20 are adjusted by comparing the temperature data fed back by the temperature probe with the corresponding set temperature. The control module preferably adjusts the power of each heating element sequentially from back to front according to the water flow direction. That is, first adjust the temperature of the tertiary temperature probe 53 to the set temperature of the tertiary heating element 41, then adjust the temperature of the secondary temperature probe 52 to the set temperature of the secondary heating element 38, and finally adjust the temperature of the primary temperature probe 51 to the set temperature of the primary heating element 37.

[0025] Compared with existing technologies, this utility model has a simple and reasonable structure. It heats the water in stages through multiple heating elements to gradually increase the water temperature, thereby effectively avoiding the problem of repeatedly boiled water and greatly improving the efficiency and flow rate of hot water output. At the same time, the structure of the first heating element ensures that it does not produce steam when operating at high power, thus ensuring that the rapid heating device can achieve a large flow rate of hot water output. Furthermore, by using a temperature probe in conjunction with a control module to adjust the power of the heating elements and the water pump flow rate, the hot water temperature output by the rapid heating device can be controlled.

[0026] The above-disclosed embodiments are merely examples of the present utility model. However, the present utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A rapid heating device with multi-stage heating, characterized in that, The heating pipe includes at least two first heating elements and one second heating element arranged sequentially from front to back along the water flow direction; The first heating element includes a housing, which is configured to have a heating chamber and a buffer chamber through which water flows sequentially. The heating chamber is used to heat the flowing water. The flow cross-sectional area of ​​the buffer chamber is larger than that of the heating chamber. The buffer chamber is used to eliminate air bubbles in the water. The housing is provided with an exhaust hole between the heating chamber and the buffer chamber, and a one-way valve is provided in the exhaust hole. The second heating element is a cylindrical hollow heating tube structure.

2. The rapid heating device with multi-stage heating according to claim 1, characterized in that, The heating chamber of the outer shell is fitted with an annular heating element, and the inner hole of the heating element defines the flow cross section of the water supply through the heating chamber.

3. The rapid heating device with multi-stage heating according to claim 2, characterized in that, The heating element is a thick-film heating element or a bicrystalline heating element.

4. The rapid heating device with multi-stage heating according to claim 1, characterized in that, The second heating element is a PTC ceramic tube.

5. A rapid heating device with multi-stage heating according to claim 1, characterized in that, Each heating element in the heating pipeline is equipped with a temperature probe at its outlet.

6. A rapid heating device with multi-stage heating according to claim 5, characterized in that, It also includes a control module and a water pump. The water pump, the second heating element, all the first heating elements, and all temperature probes are all connected to the control module via signals. The water pump is correspondingly installed on the heating pipe in front of the first heating element. The control module is pre-set with different set temperatures required for different outlet water temperatures of all heating elements. The control module adjusts the power of the corresponding heating element and / or the flow rate of the water pump by comparing the temperature data fed back by the temperature probe with the corresponding set temperature.

7. A rapid heating device with multi-stage heating according to claim 6, characterized in that, The control module adjusts the power of the heating element sequentially from back to front according to the water flow direction.

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