Heating module and instant water heating equipment

Abstract

The invention relates to the technical field of water heating equipment, in particular to a heating module and instant water heating equipment. The heating module comprises a heating body, a pump set and an integrated base. A heating pipe is arranged in the heating body, the pump set is located at a water inlet of the heating body, and a positive displacement pump cavity is formed in the pump set. The pump set and the heating body are integrally connected through an integrated base, a water inlet cavity and a water outlet channel which are separated from each other are formed in the integrated base, the water inlet cavity is communicated with the displacement pump cavity, and the displacement pump cavity is communicated with a water inlet of the heating pipe through the water outlet channel. A mounting convex part is formed on the integrated seat, a water inlet channel is formed in the outer side wall of the mounting convex part, a suction cavity is formed in the mounting convex part, the suction cavity is communicated with the water inlet cavity, a pressure regulating part is arranged between the water inlet channel and the suction cavity, and the pressure regulating part is used for connecting and disconnecting the water inlet channel and the suction cavity. By the adoption of the heating module, water flow of the heating module is controlled to be switched on or off, dirt generated by accumulated water in the heating module when the heating module does not work is prevented, and the heating efficiency of the heating module is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hot water equipment, and in particular to a heating module and an instant hot water equipment. Background Art

[0002] Common instant flow heating devices, such as household devices like instant faucets, instant electric water heaters or instant water dispensers, usually have a heating module arranged inside. The heating module uses a water supply pump to pump the water flow to be heated into the heating pipe of the heating module, so as to heat the water flow by using the heating pipe and achieve instant heating of the water flow.

[0003] When connecting the heating module to a positive-pressure water source, since the water supply pump can only be used to adjust the water flow rate input inside the heating module and cannot control the on-off of the water flow, the water flow of the positive-pressure water source will be input into the heating module under the push of its own pressure and gush out from the water outlet, resulting in water accumulation in the internal heating cavity of the heating module when it is not working and generating dirt, which affects the subsequent heating efficiency of the heating module. Summary of the Invention

[0004] In order to solve the defects of the prior art, the present invention provides a heating module and an instant hot water equipment, which can control the on-off of the water flow of the heating module itself, prevent dirt from being generated due to internal water accumulation when the heating module is not working, and ensure the heating efficiency of the heating module.

[0005] In order to solve the above technical problems, the present invention provides a heating module, including:

[0006] A heating body with a heating pipe arranged inside;

[0007] A pump set located at the water inlet position of the heating body, and the pump set forms a positive-displacement pump cavity;

[0008] An integrated seat, the pump set and the heating body are integrally connected through the integrated seat, and the integrated seat forms a water inlet cavity and a water outlet channel which are separated from each other. The water inlet cavity is communicated with the positive-displacement pump cavity, and the positive-displacement pump cavity is communicated with the water inlet of the heating pipe through the water outlet channel;

[0009] The integrated seat forms a mounting convex portion, the outer side wall of the mounting convex portion forms a water inlet channel, the inside of the mounting convex portion forms a suction cavity, the suction cavity is communicated with the water inlet cavity, and a pressure regulating member is arranged between the water inlet channel and the suction cavity. The pressure regulating member is used to switch on and off the water inlet channel and the suction cavity.

[0010] As an improvement of the above solution, the pressure regulating member includes a pressing diaphragm, a pressing rod, a hole-sealing member and an elastic member. The elastic member and the hole-sealing member are arranged in the water inlet channel along a predetermined direction;

[0011] A connecting hole is formed between the water inlet channel and the suction chamber, the pressure diaphragm is located on the inner wall surface of the suction chamber away from the connecting hole, the pressure head end of the pressure rod faces the pressure diaphragm, the pressure rod end of the pressure rod passes through the connecting hole and contacts with the sealing member; the sealing member is suitable for blocking the connecting hole.

[0012] As an improvement of the above solution, the mounting protrusion is detachably connected to a first mounting block and a second mounting block, the pressure diaphragm and the pressure rod are arranged between the first mounting block and the mounting protrusion, and the elastic member and the sealing member are arranged between the second mounting block and the mounting protrusion.

[0013] As an improvement of the above solution, a balancing air hole is formed on the first mounting block, and an air cavity is formed between the balancing air hole and the pressing diaphragm, and the air cavity is separated from the suction cavity by the pressing diaphragm.

[0014] As an improvement of the above solution, the pressing diaphragm is formed with an integrally formed fixed end and a pressing end, the fixed end is located between the first mounting block and the mounting protrusion, and the pressing end faces the suction chamber.

[0015] As an improvement of the above solution, the pump group includes:

[0016] A pump housing connected to the integrated seat, wherein a driving member is connected to a side of the pump housing facing away from the integrated seat;

[0017] An elastic pump plug is arranged inside the pump housing, and the volume pump cavity is formed on a side of the elastic pump plug facing the integrated seat;

[0018] The output shaft of the driving member is eccentrically connected to an eccentric transmission member, the elastic pump plug is formed with an eccentric column, and the eccentric transmission member is connected to the eccentric column.

[0019] As an improvement of the above solution, the water inlet chamber and the displacement pump chamber are unidirectionally connected via a first one-way valve;

[0020] The displacement pump chamber and the water outlet channel are in one-way communication via a second one-way valve;

[0021] The water outlet channel and the water inlet of the heating pipe are unidirectionally connected through a third one-way valve.

[0022] As an improvement of the above solution, the integrated seat is formed with a first connecting part and a second connecting part, the pump group is formed with a first mounting part, and the first connecting part is detachably connected to the first mounting part; the outer shell of the heating body is formed with a second mounting part, and the second connecting part is detachably connected to the second mounting part.

[0023] As an improvement of the above solution, the integrated base is further formed with a third connection part, the water outlet of the water outlet channel is formed on the third connection part, the water inlet of the heating pipe is sleeved on the third connection part, and a sealing member is arranged between the third connection part and the heating pipe.

[0024] Correspondingly, the present invention further provides an instant hot water device, including a housing and the heating module described in any one of the above, and the heating module is located inside the housing.

[0025] Implementing the present invention has the following beneficial effects:

[0026] In the heating module of this embodiment, when the pump group works, the volume of the positive displacement pump chamber of the pump group increases to form a negative pressure environment in the positive displacement pump chamber, the water inlet chamber and the suction chamber. Under the cooperation of the negative pressure environment in the suction chamber and the water flow pressure in the water inlet channel, the pressure regulating member is opened to connect the suction chamber with the water inlet channel, so that the water flow in the water inlet channel enters the pump group and is pumped into the heating pipe by the pump group for heating by the heating pipe.

[0027] When the pump group does not work, the internal pressure of the suction chamber is normal, and the water flow pressure in the water inlet channel is not sufficient to open the pressure regulating member to keep the water inlet channel disconnected from the suction chamber, thereby using the pressure regulating member to control the on-off of the water flow of the heating module itself, preventing dirt from being generated due to internal water accumulation when the heating module does not work, and ensuring the heating efficiency of the heating module. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional structural schematic diagram of a heating module in an embodiment of the present invention;

[0029] Figure 2 is an exploded structural schematic diagram of a heating module in an embodiment of the present invention;

[0030] Figure 3 is a cross-sectional structural schematic diagram when the integrated base is connected to the pump group in an embodiment of the present invention;

[0031] Figure 4 is Figure 3 an enlarged structural schematic diagram at C in

[0032] Figure 5 is a three-dimensional structural schematic diagram of a pressure regulating member in an embodiment of the present invention;

[0033] Figure 6 is a three-dimensional structural schematic diagram of an integrated base in an embodiment of the present invention;

[0034] Figure 7 is a top view structural schematic diagram of an integrated base in an embodiment of the present invention;

[0035] Figure 8 is Figure 7Schematic cross-sectional structure diagram shown along section line A-A;

[0036] Figure 9 is Figure 7 Schematic cross-sectional structure diagram shown along section line B-B;

[0037] Figure 10 Schematic explosion structure diagram of the pump group in an embodiment of the present invention;

[0038] Figure 11 Schematic diagram of the position arrangement of the second one-way valve in an embodiment of the present invention;

[0039] Figure 12 Schematic diagram of the position arrangement of the first one-way valve in an embodiment of the present invention;

[0040] Figure 13 Schematic connection structure diagram of the driving member and the eccentric transmission member in an embodiment of the present invention. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the terms of orientation such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and they do not specifically limit the present invention.

[0042] The heating module of the present invention can ensure that the water flow rate input into the heating module remains relatively stable, avoid the problem of water flow rate fluctuation, and effectively ensure the heating efficiency of the heating module.

[0043] In an embodiment of the present invention, as Figures 1 to 3 shown, the heating module includes a heating body 1, a pump group 2 and an integrated seat 3. A heating pipe 11 is arranged inside the heating body 1. The pump group 2 is located at the water inlet position of the heating body 1, and the pump group 2 forms a positive displacement pump chamber 201. The pump group 2 and the heating body 1 are integrally connected through the integrated seat 3, and the integrated seat 3 forms a water inlet chamber 301 and a water outlet channel 302 that are separated from each other. The water inlet chamber 301 is communicated with the positive displacement pump chamber 201, and the positive displacement pump chamber 201 is communicated with the water inlet of the heating pipe 11 through the water outlet channel 302.

[0044] The integrated seat 3 forms a mounting convex portion 31. The outer side wall of the mounting convex portion 31 forms a water inlet channel 311, and the inside of the mounting convex portion 31 forms a suction chamber 312. The suction chamber 312 is communicated with the water inlet chamber 301. A pressure regulating member 32 is arranged between the water inlet channel 311 and the suction chamber 312. The pressure regulating member 32 is used to open and close the water inlet channel 311 and the suction chamber 312.

[0045] In the heating module of this embodiment, when the pump group 2 works, the volume of the positive displacement pump chamber 201 of the pump group 2 increases to form a negative pressure environment in the positive displacement pump chamber 201, the water inlet chamber 301, and the suction chamber 312. Under the cooperation of the negative pressure environment in the suction chamber 312 and the water flow pressure in the water inlet passage 311, the pressure regulating member 32 is opened to connect the suction chamber 312 with the water inlet passage 311, so that the water flow in the water inlet passage 311 enters the pump group 2 and is pumped into the heating pipe 11 by the pump group 2 for the heating pipe 11 to heat.

[0046] When the pump group 2 is not working, the internal pressure of the suction chamber 312 is normal, and the water flow pressure in the water inlet passage 311 is not sufficient to open the pressure regulating member 32 to keep the water inlet passage 311 disconnected from the suction chamber 312, thereby using the pressure regulating member 32 to control the on-off of the water flow of the heating module itself, preventing dirt from being generated due to internal water accumulation when the heating module is not working, and ensuring the heating efficiency of the heating module.

[0047] In addition, the mounting protrusion 31 can also provide a mounting space for the pressure regulating member 32, integrate the pressure regulating member 32 into the integrated seat 3, protect the pump group 2 from the impact of water flow pressure, improve the overall integration of the heating module, and ensure the space utilization rate of the heating module.

[0048] It should be noted here that the heating element in the heating pipe 11 can be arranged on the outer surface of the heating pipe 11 and connected to an external power supply through a temperature control element to instantaneously heat the water flow in the heating pipe 11. For example, the heating element is an electrothermal film laid on the outer surface of the heating pipe 11. The electrothermal film can form a resistance layer on the outer surface of the heating pipe 11. When the electrothermal film is energized, the electrothermal film generates heat on the outer surface of the heating pipe 11, and the heating pipe 11 is used to transfer the heat to the water flow in the heating pipe 11, thereby completing the heating effect on the water flow.

[0049] Of course, the heating element can also be an electric heating wire, and the electric heating wire can be encapsulated on the outer wall surface of the heating pipe 11 using a high-temperature insulating material (such as mica sheet or ceramic fiber). In other embodiments, the heating element can also be a ceramic heating element or other heating elements, which can be selected and arranged according to actual needs.

[0050] When the heating element works and generates heat, its working power is preferably kept stable to ensure the working energy consumption of the heating element. When the water flow rate in the heating pipe 11 changes, it is easy to cause problems such as overheating of the water flow or the water temperature not reaching the set value. In this embodiment, the negative pressure suction in the suction chamber 312 and the water pressure in the water inlet passage 311 can be used to correspondingly control the opening degree of the connection of the pressure regulating member 32, which can ensure that the input water flow rate remains relatively stable, thereby ensuring the heating efficiency of the heating element for the water flow and maintaining the water temperature stable.

[0051] Among them, such as Figures 3 to 5As shown in the figure, the pressure regulating member 32 includes a pressing diaphragm 321, a pressing rod 322, a hole sealing member 323 and an elastic member 324. The elastic member 324 and the hole sealing member 323 are arranged in the water inlet channel 311 along a predetermined direction. A communication hole 325 is formed between the water inlet channel 311 and the suction chamber 312. The pressing diaphragm 321 is located on the inner wall surface of the suction chamber 312 away from the communication hole 325. The pressing head end 3221 of the pressing rod 322 faces the pressing diaphragm 321. The pressing rod end 3222 of the pressing rod 322 passes through the communication hole 325 and contacts the hole sealing member 323. The hole sealing member 323 is adapted to block the communication hole 325.

[0052] It can be understood that when no negative pressure environment is formed in the suction chamber 312, under the elastic force of the elastic member 324, the hole sealing member 323 blocks the communication hole 325, disconnecting the water inlet channel 311 from the suction chamber 312.

[0053] When a negative pressure environment is formed in the suction chamber 312, the pressing diaphragm 321 is subjected to negative pressure suction and elastically deforms in the direction close to the communication hole 325, and pushes the pressing rod 322 towards the water inlet channel 311 to press the hole sealing member 323 by using the pressing rod 322, and the hole sealing member 323 compresses the elastic member 324. At this time, the hole sealing member 323 disengages from the communication hole 325 under the cooperation of the water inlet pressure in the water inlet channel 311 and the pressure of the pressing rod 322, and moves a certain distance in the direction away from the communication hole 325, connecting the water inlet channel 311 with the suction chamber 312, so that the negative pressure suction of the suction chamber 312 acts on the water flow in the water inlet channel 311, and after the water flow in the water inlet channel 311 is sucked into the suction chamber 312 and the water inlet chamber 301, the water flow is input into the positive displacement pump chamber 201 of the pump set 2.

[0054] Therefore, by the cooperation of the negative pressure suction in the suction chamber 312 and the water pressure in the water inlet channel 311, the pressing rod 322 can be correspondingly controlled to press the hole sealing member 323 to open or block the communication hole 325, so as to control the connection or disconnection between the water inlet channel 311 and the suction chamber 312.

[0055] At the same time, by adjusting the negative pressure suction in the suction chamber 312, the pressing distance of the pressing rod 322 can be adjusted, and the moving distance of the hole sealing member 323 in the water inlet channel 311 can be correspondingly adjusted, so as to realize the adjustment of the opening degree of the flow passage between the water inlet channel 311 and the suction chamber 312, and correspondingly adjust the water inlet flow rate of the heating module to ensure that the water inlet flow rate remains relatively stable.

[0056] When the water inflow in the suction chamber 312 increases, causing the water pressure in the suction chamber 312 to increase, the pressure-receiving diaphragm 321 undergoes elastic deformation in the direction away from the communication hole 325 under the action of the water pressure, and the pressure-receiving diaphragm 321 disengages from the pressure rod 322. Then, under the resilience of the elastic member 324, the hole-sealing member 323 re-seals the communication hole 325 to prevent the water flow in the suction chamber 312 from flowing back into the water inlet passage 311 and at the same time prevent the water flow in the water inlet passage 311 from continuing to enter the suction chamber 312.

[0057] It should be noted that, as Figure 4 and Figure 5 shown, the elastic member 324 is preferably a spring, the hole-sealing member 323 is a piston, and a sealing cavity 313 is formed at one end of the water inlet passage 311 close to the communication hole 325. The sum of the free length of the spring and the length of the piston is greater than or equal to the length of the sealing cavity 313 to ensure that when no negative pressure environment is formed in the suction chamber 312, the elastic member 324 can press the piston against the wall surface of the sealing cavity 313 forming the communication hole 325. At the same time, the diameter of the end of the piston facing the communication hole 325 is greater than the diameter of the communication hole 325 to ensure the sealing effect of the piston on the communication hole 325.

[0058] Furthermore, to ensure that the pressure rod 322 does not affect the connectivity between the water inlet passage 311 and the suction chamber 312, a first distance d1 is formed between the pressing head end 3221 of the pressure rod 322 and the wall surface of the suction chamber 312 forming the communication hole 325, and a second distance d2 is formed between the hole-sealing member 323 and the wall surface of the water inlet passage 311 away from the communication hole 325, and the first distance d1 is greater than the second distance d2.

[0059] It can be understood that during the process of using the pressure rod 322 to push the hole-sealing member 323 away from the communication hole 325, the moving distances of the pressure rod 322 and the hole-sealing member 323 always remain the same. Since a second distance d2 is formed between the hole-sealing member 323 and the wall surface of the water inlet passage 311 away from the communication hole 325, under the action of the elastic member 324, the moving distances of the pressure rod 322 and the hole-sealing member 323 during opening are less than d2. Then, by setting d1 to be greater than d2, it can be ensured that during the process of the pressure rod 322 pressing the hole-sealing member 323, the pressing head end 3221 of the pressure rod 322 will never contact the wall surface of the suction chamber 312 forming the communication hole 325. During the process of inputting water flow to the heating module, the pressing head end 3221 of the pressure rod 322 will not block the communication hole 325, effectively ensuring the connectivity between the water inlet passage 311 and the suction chamber 312, and ensuring that the negative pressure suction force of the suction chamber 312 can suck the water flow in the water inlet passage 311 into the suction chamber 312 and the volume pump chamber 201, further ensuring the stability of the water inflow of the heating module.

[0060] In this embodiment, to facilitate the installation of the pressure-regulating member 32 using the installation protrusion 31, as Figure 1 、 Figure 2 andFigure 6 As shown, the mounting protrusion 31 is detachably connected with a first mounting block 33 and a second mounting block 34. The pressing diaphragm 321 and the pressing rod 322 are arranged between the first mounting block 33 and the mounting protrusion 31, and the elastic member 324 and the hole-sealing member 323 are arranged between the second mounting block 34 and the mounting protrusion 31. When installing the pressure regulating member 32, the first mounting block 33 and the second mounting block 34 can be detached from the mounting protrusion 31, and the hole-sealing member 323 and the elastic member 324 are sequentially assembled into the water inlet channel 311 of the mounting protrusion 31, and the pressing rod 322 and the pressing diaphragm 321 are sequentially assembled into the suction cavity 312, completing the installation of the pressure regulating member 32 on the mounting protrusion 31 and ensuring the integration between the pressure regulating member 32 and the mounting protrusion 31.

[0061] Preferably, as Figure 7 shown, the mounting protrusion 31 and the first mounting block 33 and the second mounting block 34 are all formed with dovetail grooves. By the cooperation of the paired dovetail grooves, the first mounting block 33 and the second mounting block 34 are fitted into the mounting protrusion 31, realizing the detachable connection between the first mounting block 33 and the mounting protrusion 31 and the detachable connection between the second mounting block 34 and the mounting protrusion 31.

[0062] Of course, the detachable connection between the first mounting block 33 and the second mounting block 34 is not limited to being realized through dovetail grooves. Threaded holes can also be formed in the first mounting block 33 and the second mounting block 34, and the first mounting block 33 and the second mounting block 34 are detachably connected by threaded fasteners (such as bolts, studs or screws).

[0063] Furthermore, as Figure 6 shown, the first mounting block 33 is formed with a balance air hole 331. An atmosphere cavity 332 is formed between the balance air hole 331 and the pressing diaphragm 321. The atmosphere cavity 332 is separated from the suction cavity 312 by the pressing diaphragm 321, so as to communicate with the external atmosphere environment of the first mounting block 33 by using the balance air hole 331, ensuring that when a negative pressure environment is formed in the suction cavity 312, the pressing end 3211 of the pressing diaphragm 321 can be recessed into the interior of the suction cavity 312 under the action of the internal and external pressure difference, realizing the pushing of the pressing rod 322 towards the water inlet channel 311.

[0064] Even further, as Figure 4 and Figure 5As shown, the pressing diaphragm 321 is formed with a fixed end 3212 and a pressing end 3211, the fixed end 3212 is located between the first mounting block 33 and the mounting protrusion 31, and one side of the pressing end 3211 faces the suction chamber 312, and then the fixed end 3212 is used to provide a fixed position for the pressing diaphragm 321 to ensure that the pressing end 3211 can be deformed by negative pressure and press the pressure rod 322, thereby preventing the pressing diaphragm 321 from being sucked into the suction chamber 312, thereby effectively ensuring the cooperation effect between the pressing diaphragm 321 and the pressure rod 322.

[0065] In this embodiment, Figure 3 and Figure 10 As shown, the pump assembly 2 includes a pump housing 21 and a pump plug, the pump housing 21 is connected to the integrated seat 3, and the side of the pump housing 21 facing away from the integrated seat 3 is connected to the driving member 22. The elastic pump plug 23 is arranged inside the pump housing 21, and the volume pump chamber 201 is formed on the side of the elastic pump plug 23 facing the integrated seat 3. The output shaft of the driving member 22 is eccentrically connected to the eccentric transmission member 221, and the elastic pump plug 23 is formed with an eccentric column 231, and the eccentric transmission member 221 is connected to the eccentric column 231.

[0066] It is understandable that when the pump group 2 is working, the driving member 22 is running, and the output shaft of the driving member 22 drives the eccentric transmission member 221 to rotate, and correspondingly pulls the elastic pump plug 23 to form elastic deformation, so as to increase the volume of the volume pump chamber 201, so that a connected negative pressure environment is formed in the volume pump chamber 201, the water inlet chamber 301 and the suction chamber 312, and then when the water inlet channel 311 is connected to the suction chamber 312, it is convenient for the negative pressure suction force of the negative pressure environment to act on the water inlet channel 311, so as to achieve the water pressure coordination with the water inlet channel 311 and control the opening or disconnection of the pressure regulating member 32. Subsequently, the driving member 22 drives the eccentric transmission member 221 to flip, and correspondingly pulls the elastic pump plug 23 to reset, so as to reduce the volume of the volume pump chamber 201, so as to pump the water flow in the input volume pump chamber 201 to the water outlet channel 302, so as to supply water to the heating tube 11.

[0067] Preferably, Figure 10 and Figure 13 As shown, the output shaft of the driving member 22 is connected to the eccentric connecting block 222, and the rotating shaft of the eccentric transmission member 221 is obliquely connected to the eccentric connecting block 222, so that the output shaft of the driving member 22 and the rotation center of the eccentric transmission member 221 are eccentrically arranged to ensure that the eccentric transmission member 221 can drive the elastic pump plug 23 to form elastic deformation.

[0068] The elastic pump plug 23 is preferably made of rubber material to ensure that the elastic pump plug 23 does not damage the original structure when elastically deforming.

[0069] Furthermore, if Figures 8 to 12As shown, the water inlet chamber 301 and the positive displacement pump chamber 201 are unidirectionally conducted through the first one-way valve 41; the positive displacement pump chamber 201 and the water outlet passage 302 are unidirectionally conducted through the second one-way valve 42; the water outlet passage 302 and the water inlet of the heating pipe 11 are unidirectionally conducted through the third one-way valve 43, so that the water flow can flow unidirectionally from the water inlet chamber 301 to the positive displacement pump chamber 201 through the first one-way valve 41, flow unidirectionally from the positive displacement pump chamber 201 to the water outlet passage 302 through the second one-way valve 42, and flow unidirectionally from the water outlet passage 302 to the heating pipe 11 through the third one-way valve 43, realizing the avoidance of water flow backflow in the heating module, effectively ensuring the flow direction and transmission efficiency of the water flow in the heating module, avoiding dry burning of the heating pipe 11 or dripping outward from the water inlet passage 311 due to water flow backflow, and ensuring the heating efficiency of the heating module for the water flow.

[0070] Among them, as Figure 12 shown, the first one-way valve 41 is preferably an umbrella valve. A valve seat 211 is formed on the side of the pump housing 21 facing the water inlet chamber 301. The valve seat 211 is formed with a through hole. The umbrella valve is formed with a support column 411 and an umbrella-shaped valve surface 412. The support column 411 is fixedly arranged on the valve seat 211, and the umbrella-shaped valve surface 412 arches towards the positive displacement pump chamber 201, so that when a negative pressure environment is formed inside the positive displacement pump chamber 201, the umbrella-shaped valve surface 412 can be separated from the valve seat 211 under the action of negative pressure suction, realizing the connection of the positive displacement pump chamber 201 and the water inlet chamber 301, so as to compensate the water inlet pressure by using negative pressure suction and ensure the stability of the water inlet flow. When the positive displacement pump chamber 201 pumps water outwards, under the action of water pressure, the umbrella-shaped valve surface 412 fits on the valve seat 211, disconnecting the positive displacement pump chamber 201 from the water inlet chamber 301, thereby avoiding the water flow in the positive displacement pump chamber 201 from flowing back to the water inlet chamber 301.

[0071] As Figure 11 shown, the second one-way valve 42 is a diaphragm valve or a membrane valve. A valve groove 212 is formed on the side wall surface of the pump housing 21 facing the water outlet passage 302. The water outlet of the positive displacement pump chamber 201 is located in the valve groove 212. The second one-way valve 42 is formed with an end wall 421 and an arched valve surface 422. The end wall 421 abuts against the side wall surface of the water outlet passage 302, and the edge of the arched valve surface 422 abuts against the bottom surface of the valve groove 212, and the middle part of the arched valve surface 422 arches relative to the bottom surface of the valve groove 212 to form a pressure-bearing gap, so that when the positive displacement pump chamber 201 pumps water to the water outlet passage 302, the water flow pressure can act on the arched valve surface 422 through the pressure-bearing gap, folding the arched valve surface 422 to realize the conduction of the positive displacement pump chamber 201 and the water outlet passage 302. When the water flow pressure acting on the arched valve surface 422 in the water outlet passage 302 is greater than the water flow pressure on the arched valve surface 422 in the pump chamber, the arched valve surface 422 is pressed back onto the bottom surface of the valve groove 212 again, realizing the blocking of the water flow backflow in the water outlet passage 302.

[0072] AsFigure 9 As shown in the figure, the third one-way valve 43 is a push-rod type one-way valve, which includes a valve housing 431 and a T-shaped valve core 432. The valve housing 431 is fixed to the water outlet of the water outlet passage 302, and a guide hole 433 is formed on the side of the valve housing 431 facing the heating pipe 11. The guide hole 433 is connected to the inner wall surface of the valve housing 431 through a reinforcing rib. The head end of the T-shaped valve core 432 faces the water outlet passage 302 and can abut against the stop step surface 434 at the end of the valve housing 431. The tail end of the T-shaped valve core 432 passes through the guide hole 433 and extends into the water inlet of the heating pipe 11. When the water pressure in the water outlet passage 302 acts on the T-shaped valve core 432, the T-shaped valve core 432 slides inside the valve housing 431 towards the heating pipe 11, realizing the opening of the third one-way valve 43 and conducting the water outlet passage 302 and the water inlet pipe. When the water pressure in the heating pipe 11 is greater than the water pressure in the water outlet passage 302, the T-shaped valve core 432 moves inside the valve housing 431 towards the stop step surface 434 and abuts against the stop step surface 434. By using the cooperation between the head end of the T-shaped valve core 432 and the stop step surface 434, the water flow in the heating pipe 11 is blocked from flowing back.

[0073] In the embodiment of the present invention, as Figure 2 、 Figure 6 and Figure 10 shown, to further improve the connection stability between the integrated seat 3 and the pump group 2, and between the integrated seat 3 and the heating body 1, the integrated seat 3 is formed with a first connection portion 35 and a second connection portion 36. The pump group 2 is formed with a first installation portion 24, and the first connection portion 35 is detachably connected to the first installation portion 24; the outer shell of the heating body 1 is formed with a second installation portion 12, and the second connection portion 36 is detachably connected to the second installation portion 12.

[0074] Specifically, the first connection portion 35 may be a through hole formed in the integrated seat 3, and the first installation portion 24 may be a threaded hole formed in the pump housing 21. When connecting the pump group 2 and the integrated seat 3, a bolt or stud can be inserted into the through hole and the threaded hole to realize the threaded connection between the integrated seat 3 and the connecting pump group 2.

[0075] The second connection portion 36 is an installation boss formed on the integrated seat 3. The installation boss protrudes outward towards the heating body 1, and the installation boss is formed with a connection hole. The second installation portion 12 is a convex rib formed on the side surface of the heating body housing 13. The convex rib is formed with a through hole, and an embedding groove is formed inside the installation boss. When connecting the pump group 2 and the heating body 1, the convex rib can be embedded into the embedding groove, and the connection hole of the installation boss and the through hole of the convex rib are coaxially arranged. Then, a bolt or stud is passed through the connection hole and the through hole, and fixed with a nut to realize the threaded connection between the integrated seat 3 and the heating body 1.

[0076] Furthermore, as Figure 6 、 Figure 8 and Figure 9As shown, the integrated base 3 further forms a third connection portion 37. The water outlet of the water outlet passage 302 is formed at the third connection portion 37. The water inlet of the heating pipe 11 is sleeved on the third connection portion 37, and a seal 371 is arranged between the third connection portion 37 and the heating pipe 11 to hermetically connect the water outlet of the water outlet passage 302 and the water inlet of the heating pipe 11 by means of the seal 371, improving the connection tightness between the heating pipe 11 and the integrated base 3 and preventing water from leaking between the heating pipe 11 and the third connection portion 37, which may cause a short circuit of the heating element outside the heating pipe 11.

[0077] Specifically, as Figure 8 shown, the third connection portion 37 is a convex column structure formed on the integrated base 3. The water outlet of the water outlet passage 302 is formed inside the convex column structure. The seal 371 is a sealing sleeve. The sealing sleeve is sleeved on the outer wall surface of the convex column structure, and multiple sealing strips are formed on the outer wall surface of the sealing sleeve. The sealing sleeve is hermetically connected to the inner wall surface of the heating pipe 11 by means of the multiple sealing strips.

[0078] Correspondingly, the present invention further provides an instant hot water device. The instant hot water device includes a housing and the heating module described in any one of the above embodiments. The heating module is located inside the housing. The instant hot water device has all the beneficial effects of the above heating module and all the beneficial effects of the above integrated pump group 2, which will not be elaborated here.

[0079] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, several improvements and refinements can be made without departing from the principle of the present invention, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A heating module, characterized in that, include: A heating body, wherein a heating tube is arranged inside; A pump group, located at the water inlet of the heating body, the pump group forming a volume pump cavity; An integrated seat, wherein the pump group and the heating body are integrally connected through the integrated seat, and the integrated seat is formed with a water inlet cavity and a water outlet channel separated from each other, the water inlet cavity is communicated with the volume pump cavity, and the volume pump cavity is communicated with the water inlet of the heating pipe through the water outlet channel; The integrated seat is formed with a mounting protrusion, the outer wall of the mounting protrusion is formed with a water inlet channel, the interior of the mounting protrusion is formed with a suction chamber, the suction chamber is communicated with the water inlet chamber, a pressure regulating component is arranged between the water inlet channel and the suction chamber, and the pressure regulating component is used to open and close the water inlet channel and the suction chamber.

2. The heating module according to claim 1, wherein The pressure regulating member comprises a pressure diaphragm, a pressure rod, a sealing member and an elastic member, and the elastic member and the sealing member are arranged in the water inlet channel along a predetermined direction; A connecting hole is formed between the water inlet channel and the suction chamber, the pressure diaphragm is located on the inner wall surface of the suction chamber away from the connecting hole, the pressure head end of the pressure rod faces the pressure diaphragm, the pressure rod end of the pressure rod passes through the connecting hole and contacts with the sealing member; the sealing member is suitable for blocking the connecting hole.

3. The heating module according to claim 2, wherein The mounting protrusion is detachably connected to a first mounting block and a second mounting block, the pressing diaphragm and the pressure rod are arranged between the first mounting block and the mounting protrusion, and the elastic member and the sealing member are arranged between the second mounting block and the mounting protrusion.

4. The heating module according to claim 3, wherein The first mounting block is formed with a balancing air hole, an air cavity is formed between the balancing air hole and the pressing diaphragm, and the air cavity is separated from the suction cavity by the pressing diaphragm.

5. The heating module according to claim 3, characterized in that, The pressing diaphragm is formed with an integrally formed fixed end and a pressing end, the fixed end is located between the first mounting block and the mounting protrusion, and the pressing end faces the suction chamber.

6. The heating module according to claim 1, wherein The pump unit comprises: A pump housing connected to the integrated seat, wherein a driving member is connected to a side of the pump housing facing away from the integrated seat; An elastic pump plug is arranged inside the pump housing, and the volume pump cavity is formed on a side of the elastic pump plug facing the integrated seat; The output shaft of the driving member is eccentrically connected to an eccentric transmission member, the elastic pump plug is formed with an eccentric column, and the eccentric transmission member is connected to the eccentric column.

7. The heating module according to claim 6, wherein The water inlet chamber and the displacement pump chamber are in one-way communication via a first one-way valve; The displacement pump chamber and the water outlet channel are in one-way communication via a second one-way valve; The water outlet channel and the water inlet of the heating pipe are unidirectionally connected through a third one-way valve.

8. The heating module according to claim 1, wherein, The integrated seat is formed with a first connection part and a second connection part, the pump group is formed with a first mounting part, and the first connection part is detachably connected to the first mounting part; the outer shell of the heating body is formed with a second mounting part, and the second connection part is detachably connected to the second mounting part.

9. The heating module according to claim 8, wherein The integrated seat is also formed with a third connection part, the water outlet of the water outlet channel is formed on the third connection part, the water inlet of the heating pipe is sleeved on the third connection part, and a sealing member is arranged between the third connection part and the heating pipe.

10. An instant hot water device, characterized in that, Comprising a housing and the heating module according to any one of claims 1 to 9, the heating module being located inside the housing.

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