Automatic descaling device and instant water heater

Abstract

The utility model relates to the technical field of instant water heaters, in particular to an automatic descaling device and an instant water heater. Comprising a heat source assembly and further comprises a descaling assembly, the heat source assembly comprises an electric heating part, a water inlet pipe and a water outlet pipe, and the descaling assembly comprises a circulating water tank, a chemical water tank, a valve pipeline, a water pump and a reversing valve; compared with the prior art, during descaling operation, the reversing valve changes the communication direction of the water inlet pipe and the water outlet pipe to enable the circulating water tank to be communicated with the electric heating part, so that water flow in the circulating water tank can be pumped into the electric heating part through the water inlet pipe and then flows back into the circulating water tank through the water outlet pipe; meanwhile, a cleaning agent in the agent water tank enters the circulating water tank, it is ensured that the cleaning agent can be driven by circulating water flow to conduct descaling on the electric heating part, after descaling operation is completed, a valve pipeline at the bottom of the circulating water tank is opened, and sewage is discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of instant water heaters, in particular to an automatic descaling device and an instant water heater. Background Art

[0002] Instant water heaters can quickly heat water and are a very common household appliance. Since there are more or less impurities and calcium and magnesium ions in domestic water, these substances are easily condensed into scale at high temperatures and attached to the water heater pipes or heating structures. As a result, the heating efficiency of the water heater will be affected by the scale after long-term use, and there will also be safety hazards during heating. Therefore, the water heater needs to be descaled after long-term use. When the water heater needs to be descaled, the user often needs to remove the water inlet and outlet pipes, and then manually inject the descaling agent for cleaning. This operation method is very inconvenient. Utility Model Content

[0003] The utility model aims to provide an automatic descaling device and an instant water heater, aiming to solve the problem that the descaling process of the existing instant water heater is relatively complicated.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an automatic descaling device, including a heat source component and a descaling component. The heat source component includes an electric heating part, a water inlet pipe and a water outlet pipe. The descaling component includes a circulating water tank, a chemical water tank, a valve pipeline, a water pump and a reversing valve. The chemical water tank is connected with the circulating water tank through the valve pipeline, and the chemical water tank is located directly above the valve pipeline. The water inlet pipe and the water outlet pipe are installed on the electric heating part, and the water inlet pipe and the water outlet pipe are connected with the circulating water tank through the reversing valve respectively. The reversing valve is used to change the connection direction of the water inlet pipe or the water outlet pipe. A water pump is installed between the reversing valve connected with the water inlet pipe and the circulating water tank.

[0005] Furthermore, three groups of interfaces are provided on the reversing valve, and the reversing valve includes a substrate, a driving motor and a three-way block. The substrate is installed on the bottom plate, and the driving motor is fixedly installed on the substrate. The three-way block is installed in the substrate and the three-way block can rotate in the substrate. The driving motor is used to drive the three-way block to rotate. A T-shaped pipe is provided in the three-way block, and the T-shaped pipe is used to connect any two groups of interfaces.

[0006] Furthermore, another valve pipeline is provided at the bottom of the circulating water tank.

[0007] Furthermore, a feed port is provided at the top of the medicine water tank, and an inclined surface is provided at the bottom of the medicine water tank.

[0008] Furthermore, an adjusting drive member and a regulating valve are provided on the water inlet pipe. The regulating valve is installed on the water inlet pipe, and the adjusting drive member is used to control the opening and closing size of the regulating valve.

[0009] An instant water heater comprises a housing and a control circuit, wherein the housing comprises a bottom plate and a side cover, the control circuit comprises a main control circuit board and an operation circuit board, and also comprises the above-mentioned automatic descaling device;

[0010] The main control circuit board is installed on the base plate through a circuit board mounting seat. A circuit board protection cover is also provided on the circuit board mounting seat. An extension portion is provided on the side cover. The operation circuit board is installed on the extension portion of the side cover. The operation circuit board is electrically connected to the main control circuit board. The side cover is detachably connected to the base plate. The heat source component and the descaling component are both installed on the base plate, and the water pump, valve pipeline and electric heating part are all electrically connected to the main control circuit board.

[0011] Furthermore, a feeding pipe is arranged on the bottom plate, and a sealing cover is arranged on the feeding pipe.

[0012] Compared with the prior art, the automatic descaling device and instant water heater provided by the utility model, when performing descaling operation, the reversing valve changes the connecting direction of the water inlet pipe and the water outlet pipe to connect the circulating water tank with the electric heating part, so that the water flow in the circulating water tank can be pumped into the electric heating part through the water inlet pipe, and then flow back to the circulating water tank through the water outlet pipe, and at the same time, the cleaning agent in the agent water tank enters the circulating water tank, ensuring that the cleaning agent can descal the electric heating part driven by the circulating water flow, and after the descaling operation is completed, the valve pipe at the bottom of the circulating water tank is opened to discharge the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional view of the heat source component and the descaling component in the utility model;

[0014] Figure 2 It is a three-dimensional view of the heat source component in the utility model;

[0015] Figure 3 It is a three-dimensional view of the descaling component in the utility model;

[0016] Figure 4 It is a three-dimensional cross-sectional view of the reversing valve in the utility model;

[0017] Figure 5 It is an exploded view of the reversing valve in the utility model;

[0018] Figure 6 This is a schematic diagram of the water flow direction during normal heating of the utility model;

[0019] Figure 7 This is a schematic diagram of the water flow direction during the descaling operation of the utility model;

[0020] Figure 8 It is a schematic diagram of the water flow direction during sewage discharge operation of the utility model;

[0021] Fig. 9 It is a three-dimensional view of the instant water heater in the utility model;

[0022] Fig.10 It is a cross-sectional view of the instant water heater in the utility model.

[0023] Description of reference numerals:

[0024] Among them; 1. heat source component; 10. electric heating part; 11. water inlet pipe; 12. regulating drive; 13. regulating valve; 14. water outlet pipe; 2. descaling component; 20. chemical water tank; 21. valve pipeline; 22. circulating water tank; 23. reversing valve; 230. base plate; 231. driving motor; 232. three-way block; 24. water pump; 3. shell; 30. bottom plate; 31. side cover; 32. feeding pipe; 33. sealing cover; 4. control circuit; 40. main control circuit board; 41. operating circuit board; 42. circuit board mounting seat; 43. circuit board protective cover. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with specific embodiments.

[0026] In the present utility model, unless otherwise clearly specified and limited, when terms such as "set on", "connected", and "connected" appear, these terms 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 connected through one or more intermediate media. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The directional words that appear in the present utility model are to better illustrate the characteristics of the features and the relationship between the features. It should be understood that when the placement direction of the present utility model changes, the characteristics of the features and the direction of the relationship between the features also change accordingly. Therefore, the directional words do not constitute an absolute limitation on the characteristics of the features and the relationship between the features in space, but only play a relative limitation role.

[0027] like Figures 1 to 8 As shown, the utility model provides an automatic descaling device, including a heat source component 1 and a descaling component 2, the heat source component 1 includes an electric heating part 10, a water inlet pipe 11 and a water outlet pipe 14, the descaling component 2 includes a circulating water tank 22, a chemical water tank 20, a valve pipe 21, a water pump 24 and a reversing valve 23; the chemical water tank 20 is connected to the circulating water tank 22 through the valve pipe 21, and the chemical water tank 20 is located directly above the valve pipe 21; the water inlet pipe 11 and the water outlet pipe 14 are installed on the electric heating part 10, and the water inlet pipe 11 and the water outlet pipe 14 are connected to the circulating water tank 22 through the reversing valve 23 respectively, the reversing valve 23 is used to change the connection direction of the water inlet pipe 11 or the water outlet pipe 14, and a water pump 24 is installed between the reversing valve 23 connected to the water inlet pipe 11 and the circulating water tank 22.

[0028] Through the above technical solution, when performing descaling operations, the valve pipe 21 at the bottom of the chemical water tank 20 is opened, and the cleaning agent in the chemical water tank 20 automatically falls into the circulating water tank 22 under the action of gravity. The water mixed with the cleaning agent in the circulating water tank 22 circulates in the electric heating part 10 and the circulating water tank 22 under the action of the water pump 24. Under the action of the cleaning agent, the scale in the electric heating part 10, the water inlet pipe 11 and the water outlet pipe 14 will be cleaned.

[0029] In this embodiment, three groups of interfaces are provided on the reversing valve 23, and the reversing valve 23 includes a base plate 230, a driving motor 231 and a three-way block 232. The driving motor 231 is fixedly installed on the base plate 230, the three-way block 232 is installed in the base plate 230 and the three-way block 232 can rotate in the base plate 230, and the driving motor 231 is used to drive the three-way block 232 to rotate. A T-shaped pipe is provided in the three-way block 232, and the T-shaped pipe is used to connect any two groups of interfaces.

[0030] Through the above technical solution, the electric heating part 10 needs to heat the water flow, and the impurities such as calcium and magnesium ions in the water flow will form scale and adhere to the inner wall of the electric heating part 10 after a long period of heating, which will affect the heating efficiency of the electric heater in the long run. When descaling is required, the driving motor 231 controls the three-way block 232 to change the direction of the pipeline connection, so that the water inlet pipe 11 and the water outlet pipe 14 that were originally connected to the outside world are disconnected from the outside world, and the water outlet pipe 14 and the water inlet pipe 11 are respectively connected to the circulating water tank 22. At this time, the water source in the circulating water tank 22 can flow to the water inlet pipe 11 under the pumping of the water pump 24, and then flow to the electric heating part 10 and the water outlet pipe 14 in turn. Under the guidance of the reversing valve 23, the water flow in the water outlet pipe 14 will return to the circulating water tank 22.

[0031] In this embodiment, another valve pipe 21 is provided at the bottom of the circulating water tank 22. The valve pipe 21 at the bottom of the circulating water tank 22 can automatically discharge the sewage in the circulating water tank 22. After multiple cycles, the water flow in the circulating water tank 22 will become turbid. At this time, the valve pipe 21 at the bottom of the circulating water tank 22 is opened, and the reversing valve 23 on the water inlet pipe 11 changes the connection direction, so that the water inlet pipe 11 is reconnected with the outside world. The water flow from the outside world flows into the electric heating part 10 under the action of its own water pressure, and the sewage containing cleaning agents and impurities is flushed into the circulating water tank 22. Since the reversing valve 23 disconnects the connection between the circulating water tank 22 and the water inlet pipe 11, the sewage in the circulating water tank 22 will be discharged from the valve pipe 21 at the bottom of the circulating water tank 22.

[0032] In this embodiment, a refilling port is provided at the top of the chemical water tank 20, and an inclined surface is provided at the bottom of the chemical water tank 20. The user can refill the cleaning agent to the chemical water tank 20 through the refilling port, and the inclined surface can be used to guide the cleaning agent to gather near the valve pipe 21.

[0033] In this embodiment, an adjusting drive 12 and a regulating valve 13 are provided on the water inlet pipe 11. The regulating valve 13 is installed on the water inlet pipe 11. The adjusting drive 12 is used to control the opening and closing of the regulating valve 13; the adjusting drive 12 automatically adjusts the water pressure by controlling the opening and closing of the regulating valve 13. When the ambient temperature is low and the temperature of the water entering the water inlet pipe 11 is low, the adjusting drive 12 controls the regulating valve 13 to reduce the opening and closing degree, so as to reduce the water flow entering the electric heating part 10, and ensure that the water temperature flowing out of the water outlet pipe 14 meets the use requirements. It should be noted that: the water temperature monitoring after heating by the electric heating part 10 and the water temperature signal feedback to the adjusting drive 12 after monitoring to realize the control method of opening and closing of the regulating valve 13 belong to the prior art and will not be repeated in this application.

[0034] like Figures 9 and 10 As shown, the utility model also provides an instant water heater, including the above-mentioned automatic descaling device, and also includes a housing 3 and a control circuit 4, the housing 3 includes a bottom plate 30 and a side cover 31, and the control circuit 4 includes a main control circuit board 40 and an operation circuit board 41;

[0035] The main control circuit board 40 is installed on the base plate 30 through the circuit board mounting seat 42. A circuit board protection cover 43 is also provided on the circuit board mounting seat 42. An extension portion is provided on the side cover 31. The operation circuit board 41 is installed on the extension portion of the side cover 31. The operation circuit board 41 is electrically connected to the main control circuit board 40. The side cover 31 is detachably connected to the base plate 30. The heat source component 1 and the descaling component 2 are both installed on the base plate 30, and the water pump 24, the valve pipe 21 and the electric heating part 10 are all electrically connected to the main control circuit board 40.

[0036] It should be noted that the adjustment drive member 12 and the drive motor 231 are both electrically connected to the main control circuit board 40 .

[0037] In this embodiment, a feeding pipe 32 is provided on the bottom plate 30, and a sealing cover 33 is provided on the feeding pipe 32. The feeding pipe 32 is provided corresponding to the feeding port, so as to facilitate the feeding of the cleaning agent.

[0038] In this embodiment, the valve pipeline 21 is composed of a ball valve and a stepper motor, and the stepper motor controls the opening and closing of the ball valve to control the connection and closing of the ball valve.

[0039] In this embodiment, the adjustment drive member 12 is preferably a stepping motor.

[0040] To sum up, compared with the prior art, the automatic descaling device and instant water heater provided by the utility model, when performing descaling operations, the reversing valve 23 changes the connection direction between the water inlet pipe 11 and the water outlet pipe 14 so that the circulating water tank 22 is connected to the electric heating part 10, so that the water flow in the circulating water tank 22 can be pumped into the electric heating part 10 through the water inlet pipe 11, and then flow back to the circulating water tank 22 through the water outlet pipe 14. At the same time, the cleaning agent in the agent water tank 20 enters the circulating water tank 22, ensuring that the cleaning agent can descale the electric heating part 10 driven by the circulating water flow. After the descaling operation is completed, the valve pipe 21 at the bottom of the circulating water tank 22 is opened to discharge the sewage.

[0041] In the absence of conflict, the above-mentioned embodiments and features thereof may be combined with each other.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. An automatic descaling device, comprising a heat source assembly (1), characterized in that: The descaling component (2) is also included. The heat source component (1) includes an electric heating unit (10), a water inlet pipe (11) and a water outlet pipe (14). The descaling component (2) includes a circulating water tank (22), a chemical water tank (20), a valve pipe (21), a water pump (24) and a reversing valve (23). The chemical water tank (20) is connected to the circulating water tank (22) via the valve pipe (21), and the chemical water tank (20) is located in the valve pipe (2 1) directly above; a water inlet pipe (11) and a water outlet pipe (14) are installed on the electric heating part (10), and the water inlet pipe (11) and the water outlet pipe (14) are respectively connected to the circulating water tank (22) through a reversing valve (23), the reversing valve (23) is used to change the connection direction of the water inlet pipe (11) or the water outlet pipe (14), and a water pump (24) is installed between the reversing valve (23) connected to the water inlet pipe (11) and the circulating water tank (22).

2. An automatic descaling device according to claim 1, characterized in that: The reversing valve (23) is provided with three groups of interfaces. The reversing valve (23) comprises a base plate (230), a driving motor (231) and a three-way block (232). The driving motor (231) is fixedly mounted on the base plate (230). The three-way block (232) is mounted in the base plate (230) and can rotate in the base plate (230). The driving motor (231) is used to drive the three-way block (232) to rotate. A T-shaped pipe is provided in the three-way block (232). The T-shaped pipe is used to connect any two groups of interfaces.

3. The automatic descaling device according to claim 1, characterized in that: Another valve pipeline (21) is provided at the bottom of the circulating water tank (22).

4. The automatic descaling device according to claim 1, characterized in that: A feeding port is provided at the top of the medicine water tank (20), and an inclined surface is provided at the bottom of the medicine water tank (20).

5. The automatic descaling device according to claim 1, characterized in that: An adjusting drive member (12) and an adjusting valve (13) are provided on the water inlet pipe (11); the adjusting valve (13) is installed on the water inlet pipe (11); and the adjusting drive member (12) is used to control the opening and closing size of the adjusting valve (13).

6. An instant water heater, comprising a housing (3) and a control circuit (4), the housing (3) comprising a bottom plate (30) and a side cover (31), the control circuit (4) comprising a main control circuit board (40) and an operating circuit board (41), characterized in that: Also includes the automatic descaling device according to any one of claims 1 to 5; The main control circuit board (40) is mounted on the bottom plate (30) via a circuit board mounting seat (42); a circuit board protection cover (43) is also provided on the circuit board mounting seat (42); an extension portion is provided on the side cover (31); the operation circuit board (41) is mounted on the extension portion of the side cover (31); the operation circuit board (41) is electrically connected to the main control circuit board (40); and the side cover (31) is detachably connected to the bottom plate (30); the heat source component (1) and the descaling component (2) are both mounted on the bottom plate (30); and the water pump (24), the valve pipeline (21) and the electric heating part (10) are all electrically connected to the main control circuit board (40).

7. The instant water heater according to claim 6, characterized in that: A feeding pipe (32) is arranged on the bottom plate (30), and a sealing cover (33) is arranged on the feeding pipe (32).

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