A high power flow water heater

Abstract

The present invention discloses a high-power flowing water heater, comprising: a heating element, comprising a first metal plate, a heating plate, and a second metal plate which are sequentially stacked; guide grooves are provided on the first metal plate and the second metal plate, and the two guide grooves respectively form a first cavity and a second cavity with the heating plate; a heating water tank, comprising a main body and a cover body; a water inlet and a water outlet are provided on the cover body, a containing cavity is provided inside the main body, and one side of the main body is connected to the cover body, and the other side is provided with an opening; an electronic control system, and the electronic control system is installed on the main body. The high-power flowing water heater of the present invention solves the problem of easy scale generation in the heater and easy ice formation inside the heater at low temperatures through the coordinated arrangement of the heating element, the heating water tank, and the electronic control system, and at the same time realizes a rapid increase in water temperature in a short time, and the outlet water temperature is relatively stable; it not only improves the heating efficiency, but also increases the service life of the heater.

Description

Technical Field

[0001] The invention relates to the field of heating devices, and in particular to a high-power flowing water heater. Background Art

[0002] Traditional resistance heaters mainly include metal tube heating, thick film flat plate heating, ceramic sheet heating and ceramic tube heating. Metal tube heating is prone to leakage accidents and has fewer and fewer applications; thick film flat plate heating is difficult to promote in strong electric heating occasions because the thick film is easy to burn through under high power conditions and there has been no good solution to the insulation problem; ceramic sheet and ceramic tube heating are gradually being used more and more widely in strong electric and high power occasions. Ceramic sheets and ceramic tubes have the advantages of simple production process, high yield rate, and easy power control.

[0003] At present, there are still the following problems in ceramic heaters:

[0004] The heater is difficult to assemble and generally has low heating power;

[0005] Since the flow rate in the cavity is too low, scale is easily accumulated;

[0006] When the flow rate suddenly decreases or the water supply is cut off, the center of the ceramic plate is prone to overheating due to the lag in the electronic system's perception of the flow rate.

[0007] At low temperatures, ice easily forms inside the heater, causing cracks.

[0008] Based on the above situation, the present invention proposes a high-power flowing water heater, which can effectively solve the above problems. Summary of the invention

[0009] The purpose of the present invention is to provide a high-power flowing water heater. The high-power flowing water heater of the present invention has a simple structure and is easy to use. Through the coordinated arrangement of a heating element, a heating water tank and an electronic control system, the problem of easy scale generation in the heater and easy ice formation inside the heater at low temperatures is solved. At the same time, the water temperature is rapidly increased in a short time, and the outlet water temperature is relatively stable; the heating efficiency is improved, and the service life of the heater is increased.

[0010] The present invention is achieved through the following technical solutions:

[0011] A high-power flow water heater, comprising:

[0012] The heating element comprises a first metal plate, a heating plate and a second metal plate which are stacked in sequence; the first metal plate and the second metal plate are both provided with guide grooves, and the two guide grooves respectively form a first cavity and a second cavity with the heating plate;

[0013] The heating water tank comprises a main body and a cover body; the cover body is provided with a water inlet and a water outlet, the main body is provided with a receiving cavity inside, one side of the main body is connected to the cover body, and the other side is provided with an opening;

[0014] An electronic control system, wherein the electronic control system is mounted on the main body;

[0015] In which, the heating element is arranged in the accommodating cavity of the heating water tank, and a third cavity is formed between the heating element and the accommodating cavity; the water inlet is connected with the third cavity, and the water outlet is connected with the first cavity and the second cavity; a sealing assembly for sealing the opening is provided on the opening, the heating plate is inserted into the sealing assembly through the opening, and the electronic control system is electrically connected to the heating element and the heating water tank respectively.

[0016] The purpose of the present invention is to provide a high-power flowing water heater. The high-power flowing water heater of the present invention has a simple structure and is easy to use. Through the coordinated arrangement of a heating element, a heating water tank and an electronic control system, the problem of easy scale generation in the heater and easy ice formation inside the heater at low temperatures is solved. At the same time, the water temperature is rapidly increased in a short time, and the outlet water temperature is relatively stable; the heating efficiency is improved, and the service life of the heater is increased.

[0017] Preferably, the main body is provided with a drain port, and a pressure relief device is installed on the drain port.

[0018] Preferably, the pressure relief device includes a limit cover and a pressure relief assembly, the limit cover is arranged outside the pressure relief assembly and is connected to the drain port, and the pressure relief assembly includes a spring, a piston and a sealing ring which are arranged in sequence.

[0019] Preferably, the sealing element comprises a sealing rubber block and a stainless steel plate for pressing the sealing rubber block.

[0020] Preferably, the bottom of the sealing rubber block matches the shape of the opening, and the stainless steel plate includes a horizontal plate and a vertical plate, and the vertical plates are respectively vertically arranged on both sides of the horizontal plate.

[0021] Preferably, the volume of the third cavity is greater than the sum of the volumes of the first cavity and the second cavity.

[0022] Preferably, the volume of the third cavity is 10 ml, and the total volume of the first cavity and the second cavity is 3 ml.

[0023] Preferably, the main body and the cover body are detachably connected.

[0024] Preferably, the heating plate is a high-power ceramic heating plate.

[0025] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0026] The high-power flowing water heater of the present invention has a simple structure and is easy to use. Through the coordinated arrangement of the heating element, the heating water tank and the electronic control system, the problems of easy scale generation in the heater and easy ice formation inside the heater at low temperatures are solved. At the same time, the water temperature is quickly raised in a short time, and the water outlet temperature is relatively stable; this not only improves the heating efficiency, but also increases the service life of the heater.

[0027] Since the capacity of the third cavity is more than three times the sum of the capacities of the first cavity and the second cavity, and there is only a heat-conducting metal plate between them, the unheated water in the third cavity can absorb the heat of the first cavity and the second cavity through the metal plate, and the water temperature in the first cavity and the second cavity will not rise very high, so that the temperature of the water outlet is relatively stable;

[0028] Since the heating plate only needs to heat the first cavity and the first cavity with a volume of about 3mL, it can achieve instant heating even at a flow rate of 700mL / min, and can heat from cold water to the set temperature within 1 second, greatly improving the heating response speed;

[0029] Since only the first cavity and the first cavity are in contact with the ceramic heating plate, and the cross-sectional area of ​​the flow passages of the first cavity and the first cavity is very small, the water flow rate in the first cavity and the first cavity is very fast, the heat transfer rate of the ceramic heating plate is very fast, and the surface temperature of the ceramic heating plate can be maintained at a very low level. At low temperatures, the scale precipitation rate is very slow, and under the impetus of the flowing water, the precipitated scale cannot condense into large grains in the first cavity and the first cavity, thus avoiding the formation and accumulation of scale;

[0030] By setting up a pressure relief device, the heating chamber will be pushed open when there is high pressure (>0.15MPa), and ice water will overflow from the drain port, effectively preventing the heater from being frozen and cracked;

[0031] When the cavity temperature is lower than 6°C, the electronic control system can control the heater to heat and keep warm at a very low power (select a heating power of about 4W), providing an additional anti-freeze cracking measure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention (when not assembled);

[0033] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention;

[0034] Figure 3 It is a schematic diagram of a top cross-sectional structure of the present invention;

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the internal cavity of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the metal plate of the present invention;

[0037] Figure 6 It is a structural schematic diagram of the stainless steel plate of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent. Example

[0039] like Figures 1 to 3 As shown, the present invention provides a high-power flow water heater, comprising:

[0040] The heating element 1 comprises a first metal plate 11, a heating plate 12 and a second metal plate 13 which are stacked in sequence; the first metal plate 11 and the second metal plate 13 are both provided with a guide groove 111, and the two guide grooves 111 respectively form a first cavity 14 and a second cavity 15 with the heating plate 12; water flows in the first cavity 14 and the second cavity 15. Since only the first cavity 14 is in contact with the second cavity 15 and the heating plate 12, and the cross-sectional area of ​​the flow channel of the first cavity 14 and the second cavity 15 is very small, the flow velocity of the water in the first cavity 14 and the second cavity 15 is very fast, the heat transfer speed of the heating plate 12 is very fast, and the surface temperature of the heating plate 12 can be maintained at a very low level. At low temperatures, the precipitation speed of scale is very slow, and under the impetus of the flowing water, the precipitated scale cannot condense into large grains in the first cavity 14 and the second cavity 15, thereby avoiding the formation and accumulation of scale.

[0041] The heating water tank 2 comprises a main body 21 and a cover 22; the cover 22 is provided with a water inlet 221 and a water outlet 222, the main body 21 is provided with a receiving cavity inside, and one side of the main body 21 is connected to the cover 22, and the other side is provided with an opening 211;

[0042] An electronic control system 3, wherein the electronic control system 3 is installed on the main body 21;

[0043] The heating element 1 is disposed in the accommodating cavity of the heating water tank 2 , and a third cavity 16 is formed between the heating element 1 and the accommodating cavity, that is, the portion of the accommodating cavity except the heating element 1 is the third cavity 16 .

[0044] The water inlet 221 is connected to the third cavity 16, and the water outlet 222 is connected to the first cavity 14 and the second cavity 15; water flows into the third cavity 16 from the water inlet 221, and the water level gradually rises; after the water level overflows the groove of the metal plate, it enters the first cavity 14 and the second cavity 15; the flowing water flows along the flow channel between the metal plate and the heating plate 12, and is gradually heated to the target temperature by the heating plate 12, and finally flows out from the water outlet 222.

[0045] The opening 211 is provided with a sealing component 212 for sealing the opening 211, the heating plate 12 is inserted into the sealing component 212 through the opening 211, and the electronic control system 3 is electrically connected to the heating element 1 and the heating water tank 2 respectively, and the electronic control system 3 is used to control the working status of the heating element 1 and the heating water tank 2. Example

[0046] like Figures 1 to 3 As shown, the present invention provides a high-power flow water heater, comprising:

[0047] The heating element 1 comprises a first metal plate 11, a heating plate 12 and a second metal plate 13 which are stacked in sequence; the first metal plate 11 and the second metal plate 13 are both provided with a guide groove 111, and the two guide grooves 111 respectively form a first cavity 14 and a second cavity 15 with the heating plate 12; water flows in the first cavity 14 and the second cavity 15. Since only the first cavity 14 is in contact with the second cavity 15 and the heating plate 12, and the cross-sectional area of ​​the flow channel of the first cavity 14 and the second cavity 15 is very small, the flow velocity of the water in the first cavity 14 and the second cavity 15 is very fast, the heat transfer speed of the heating plate 12 is very fast, and the surface temperature of the heating plate 12 can be maintained at a very low level. At low temperatures, the precipitation speed of scale is very slow, and under the impetus of the flowing water, the precipitated scale cannot condense into large grains in the first cavity 14 and the second cavity 15, thereby avoiding the formation and accumulation of scale.

[0048] The heating water tank 2 comprises a main body 21 and a cover 22; the cover 22 is provided with a water inlet 221 and a water outlet 222, the main body 21 is provided with a receiving cavity inside, and one side of the main body 21 is connected to the cover 22, and the other side is provided with an opening 211;

[0049] An electronic control system 3, wherein the electronic control system 3 is installed on the main body 21;

[0050] The heating element 1 is disposed in the accommodating cavity of the heating water tank 2 , and a third cavity 16 is formed between the heating element 1 and the accommodating cavity, that is, the portion of the accommodating cavity except the heating element 1 is the third cavity 16 .

[0051] The water inlet 221 is connected to the third cavity 16, and the water outlet 222 is connected to the first cavity 14 and the second cavity 15; water flows into the third cavity 16 from the water inlet 221, and the water level gradually rises; after the water level overflows the groove of the metal plate, it enters the first cavity 14 and the second cavity 15; the flowing water flows along the flow channel between the metal plate and the heating plate 12, and is gradually heated to the target temperature by the heating plate 12, and finally flows out from the water outlet 222.

[0052] The opening 211 is provided with a sealing component 212 for sealing the opening 211, the heating plate 12 is inserted into the sealing component 212 through the opening 211, and the electronic control system 3 is electrically connected to the heating element 1 and the heating water tank 2 respectively, and the electronic control system 3 is used to control the working status of the heating element 1 and the heating water tank 2.

[0053] Furthermore, in another embodiment, a water drain port 213 is provided on the main body 21 , and a pressure relief device 214 is installed on the water drain port 213 .

[0054] Furthermore, in another embodiment, the pressure relief device 214 includes a limit cover 2141 and a pressure relief assembly, the limit cover 2141 is arranged outside the pressure relief assembly and is connected to the drain port 213, and the pressure relief assembly includes a spring 2142, a piston 2143 and a sealing ring 2144 which are arranged in sequence.

[0055] In a low temperature environment, the water outlet 222 and the water inlet 221 will freeze first due to their small size and fast heat conduction, resulting in the passage being blocked. Then the water in the heating water tank 2 will gradually freeze. During the crystallization process, the ice-water mixture will expand, the pressure will increase, and the pressure relief port will automatically open, and the ice water will overflow from the pressure relief port, protecting the heater from freezing and cracking. When there is high pressure (>0.15MPa) in the heating water tank 2, the pressure relief device 214 will be pushed open.

[0056] At the same time, when the cavity temperature is lower than 6°C, the electronic control system can control the heater to heat and keep warm at a very low power (select a heating power of about 4W), providing an additional anti-freeze cracking measure.

[0057] Furthermore, in another embodiment, the sealing assembly 212 includes a sealing rubber block 2121 and a stainless steel plate 2122 for pressing the sealing rubber block 2121 .

[0058] Furthermore, in another embodiment, the bottom of the sealing rubber block 2121 matches the shape of the opening 211 , and the stainless steel plate 2122 includes a horizontal plate 21221 and a vertical plate 21222 , and the vertical plates 21222 are vertically arranged on both sides of the horizontal plate 21221 .

[0059] Through the above structure, the stainless steel plate 2122 presses the sealing rubber block 2121 so that the sealing rubber block 2121 blocks the opening 211. Because the bottom of the sealing rubber block 2121 matches the shape of the opening 211, the sealing rubber block 2121 fits the opening very well and has good sealing performance to prevent water from flowing out. The stainless steel plate 2122 can increase the strength to resist deformation.

[0060] Furthermore, in another embodiment, the volume of the third cavity 16 is greater than the sum of the volumes of the first cavity 14 and the second cavity 15 .

[0061] Since the capacity of the third cavity 16 is greater than the sum of the capacities of the first cavity 14 and the second cavity 15, when the flow rate suddenly decreases or the water supply stops, the electronic system cannot stop heating immediately due to the lag in sensing the flow rate, resulting in residual heat in the heating plate 12, and the water temperature in the first cavity 14 and the second cavity 15 will be out of control for a short time and exceed the set temperature; since the water in the third cavity 16 is not heated, and the third cavity 16 and the first cavity 14 and the second cavity 15 are isolated by heat-conducting metal sheets, the heat will be transferred from the first cavity 14 and the second cavity 15 to the third cavity 16, so the water temperature in the first cavity 14 and the second cavity 15 will drop quickly. After the water supply is restored, no high-temperature water will flow out of the outlet.

[0062] Furthermore, in another embodiment, the volume of the third cavity 16 is 10 ml, and the total volume of the first cavity 14 and the second cavity 15 is 3 ml.

[0063] Since the heating plate 12 only needs to heat the first cavity 14 and the second cavity 15 with a volume of about 3 mL, instant heating can be achieved even at a flow rate of 700 mL / min, and the temperature can be raised from cold water to the set temperature within 1 second, greatly improving the heating response speed.

[0064] Furthermore, in another embodiment, the main body 21 and the cover body 22 are detachably connected.

[0065] Due to the above structure, it is convenient to carry out maintenance and care of the internal components of the heating water tank at a later stage.

[0066] Furthermore, in another embodiment, the heating plate 12 is a high-power ceramic heating plate.

[0067] By using high-power ceramic heating elements, the heating efficiency can be improved and the water temperature can be raised faster.

[0068] The working principle of one embodiment of the present invention is as follows:

[0069] A high-power water heater, water first enters the third cavity 16 from the water inlet 221. After the third cavity 16 is full, the water flows into the first cavity 14 and the second cavity 15 from the upper notch of the guide groove 111 in two ways. When the water flows along the circuitous flow path of the first cavity 14 and the second cavity 15, it is gradually heated and flows out from the water outlet 222 after reaching the set temperature.

[0070] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0071] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-power water heater, characterized in that: include: The heating element (1) comprises a first metal plate (11), a heating plate (12) and a second metal plate (13) which are stacked in sequence; the first metal plate (11) and the second metal plate (13) are both provided with guide grooves (111), and the two guide grooves (111) respectively form a first cavity (14) and a second cavity (15) with the heating plate (12); A heating water tank (2) comprises a main body (21) and a cover body (22); the cover body (22) is provided with a water inlet (221) and a water outlet (222); a receiving cavity is provided inside the main body (21); one side of the main body (21) is connected to the cover body (22), and the other side is provided with an opening (211); An electronic control system (3), wherein the electronic control system (3) is mounted on the main body (21); The heating element (1) is arranged in a receiving cavity of a heating water tank (2), and a third cavity (16) is formed between the heating element (1) and the receiving cavity; the water inlet (221) is connected to the third cavity (16), and the water outlet (222) is connected to the first cavity (14) and the second cavity (15); a sealing component (212) for sealing the opening (211) is provided on the opening (211); the heating plate (12) passes through the opening (211) and is inserted into the sealing component (212); and the electronic control system (3) is electrically connected to the heating element (1) and the heating water tank (2), respectively; The main body (21) is provided with a water drain port (213), and a pressure relief device (214) is installed on the water drain port (213); The volume of the third cavity (16) is greater than the sum of the volumes of the first cavity (14) and the second cavity (15); The heating plate (12) is a high-power ceramic heating plate.

2. The high-power flowing water heater according to claim 1, characterized in that: The pressure relief device (214) comprises a limit cover (2141) and a pressure relief assembly. The limit cover (2141) is arranged outside the pressure relief assembly and is connected to the water drain port (213). The pressure relief assembly comprises a spring (2142), a piston (2143) and a sealing ring (2144) which are arranged in sequence.

3. The high-power flowing water heater according to claim 1, characterized in that: The sealing assembly (212) comprises a sealing rubber block (2121) and a stainless steel plate (2122) used to press the sealing rubber block (2121).

4. The high-power flowing water heater according to claim 3 is characterized in that: The bottom of the sealing rubber block (2121) matches the shape of the opening (211), and the stainless steel plate (2122) comprises a horizontal plate (21221) and a vertical plate (21222), wherein the vertical plates (21222) are respectively arranged vertically on both sides of the horizontal plate (21221).

5. The high-power flowing water heater according to claim 1, characterized in that: The volume of the third cavity (16) is 10 ml, and the total volume of the first cavity (14) and the second cavity (15) is 3 ml.

6. The high-power flowing water heater according to claim 1, characterized in that: The main body (21) and the cover body (22) are detachably connected.

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