Steam oven and control method

Abstract

The invention relates to the technical field of steam ovens, in particular to a steam oven and a control method, and aims to solve the problem that the temperature of superheated steam cannot be accurately controlled due to the fact that different superheat degrees of the superheated steam under different flows cannot be realized by an existing steam oven. In order to achieve the purpose, the steam oven comprises an outer oven body, an inner container, a water storage device, a steam generation device, a temperature monitoring device, a water pump and a controller. The steam generating device is communicated with the water storage device and the inner container. The temperature monitoring device is used for monitoring the water temperature and the steam temperature; and the controller is in communication connection with the steam generation device and the temperature monitoring device, and the controller controls the steam generation device to adjust the operation power according to the monitoring value of the temperature monitoring device, so that the steam temperature is adjusted. Adjustment of different flows is achieved by controlling the water pump, and different superheat degrees of steam are controlled by controlling the steam generation device.

Description

Technical Field

[0001] The invention relates to the technical field of steam ovens, and in particular provides a steam oven and a control method thereof. Background Art

[0002] The steam oven steams and bakes food by passing saturated steam into the oven. Compared with the traditional electric oven, the steam oven can improve the taste of food. Since the heat loss of ordinary saturated steam is too large, the temperature is not high enough and the heating effect is not ideal, so superheated saturated steam is needed to cook food.

[0003] Existing superheated steam ovens can achieve efficient conversion from cold water to superheated steam, but existing steam ovens can only use the heating tubes arranged in the cooking chamber to secondary heat saturated steam to generate superheated steam, and cannot directly output superheated steam to the cooking chamber. At the same time, existing steam ovens cannot achieve different superheat degrees of superheated steam at different flow rates, resulting in the inability to accurately control the temperature of the superheated steam.

[0004] Accordingly, the art proposes a new steam oven and a control method to solve the above problems. Summary of the invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that the existing steam oven can only use the heating tube arranged in the cooking chamber to secondary heat the saturated steam to produce superheated steam, but cannot directly output the superheated steam to the cooking chamber, and at the same time, the existing steam oven cannot achieve different superheat degrees of superheated steam under different flow rates, resulting in the problem that the temperature of the superheated steam cannot be accurately controlled.

[0006] In a first aspect, the present invention provides a steam oven, comprising:

[0007] outer box;

[0008] An inner liner, which is arranged in the outer box;

[0009] A water storage device, which is arranged on the outer wall of the inner container;

[0010] A steam generating device is arranged on the outer wall of the inner pot, one end of the steam generating device is connected to the water storage device, and the other end of the steam generating device is connected to the inner pot, and a water pump is arranged between the steam generating device and the water storage device;

[0011] A temperature monitoring device for monitoring the water temperature at the inlet side of the steam generating device and the steam temperature at the outlet side of the steam generating device; and

[0012] A controller is respectively connected to the steam generating device and the temperature monitoring device for communication. The controller controls the steam generating device to adjust the operating power according to the monitoring value of the temperature monitoring device, thereby adjusting the steam temperature.

[0013] In the case of adopting the above technical solution, the present application realizes the regulation of different flow rates by controlling the voltage of the DC water pump, and realizes the control of different superheat degrees of steam by controlling the power of the steam generating device. Moreover, the present application can heat the super-normal temperature water into superheated steam in the steam generating device, realize heating outside the cavity of the cooking cavity into superheated steam and spray it into the cooking cavity, and at the same time, the temperature of the water inlet and the steam outlet can be monitored by the temperature monitoring device, and the superheat degree of the superheated steam can be adjusted in real time by the controller, so that the steam generating device directly produces superheated steam with different superheat degrees, thereby improving the usability of the steam oven.

[0014] Preferably, the steam generating device comprises a first heating tube, a second heating tube and a third heating tube connected in sequence; the first heating tube is used to heat the normal temperature water from the water storage device into high temperature water, the second heating tube is used to heat the high temperature water into saturated steam, and the third heating tube is used to perform secondary heating on the saturated steam.

[0015] In the case of adopting the above technical solution, the first heating tube, the second heating tube and the third heating tube are connected end to end in sequence and are reasonably arranged in the steam generating device. When the steam generating device is working, the water flowing from the water storage device to the steam generating device will realize the process from liquid state to gas-liquid mixed state to gas state in the above heating tube, and change from normal temperature water to saturated steam and then to superheated saturated steam, and finally the superheated saturated steam is transported to the cooking cavity to heat the food. Since the present device can directly heat the saturated steam in the steam generating device, there is no need to set a secondary heating tube and a matching temperature monitoring device and other components inside the cavity or on the side wall of the cavity, which is also conducive to reducing the volume of the steam oven and realizing the miniaturization of the steam oven.

[0016] Preferably, the temperature monitoring device comprises:

[0017] A first temperature monitoring device, which is arranged at the inlet side of the steam generating device and is used for the water temperature at the inlet side;

[0018] The second temperature monitoring device is arranged at the outlet side of the steam generating device and is used to monitor the steam temperature at the outlet side.

[0019] In the case of adopting the above technical solution, the first temperature monitoring device is used to monitor the initial temperature of the water flow entering the steam generating device, and transmit the initial temperature to the control system of the steam oven to prepare for the subsequent adjustment of the water pump flow and the power of the steam generating device. The second temperature monitoring device is used to monitor the temperature of the superheated steam generated by the steam generating device, which is the temperature of the cooking food.

[0020] Preferably, it further comprises a flow transmitter, which is arranged at the inlet side of the steam generating device and is used to monitor the water flow at the inlet side;

[0021] A flow regulator is arranged at the inlet side of the steam generating device, and the controller controls the working state of the flow regulator according to the monitoring value of the flow transmitter.

[0022] When the above technical solution is adopted, the flow regulator is used to control the water flow output by the water pump. The water flow is monitored in real time by the flow transmitter and regulated by the flow regulator. Firstly, the water flow can be controlled so that the water flow matches the required superheated steam generation amount and generation speed. Secondly, when the water flow fluctuates, the impact of the water flow disturbance can be minimized.

[0023] Preferably, an electric regulating valve for controlling the flow rate of the superheated steam is provided on the pipeline between the steam generating device and the inner tank.

[0024] In the case of adopting the above technical solution, when cooking food, the controller controls the electric regulating valve according to different cooking requirements within a preset time period, thereby changing the flow rate of superheated steam sprayed into the inner pot. When cooking is completed, in order to stop the steam generating device from inputting steam into the inner pot in time, the electric regulating valve can be closed to block the flow of steam, thereby preventing the user from being burned by excessive steam when turning on the steam oven.

[0025] Preferably, the controller is also in communication connection with the water pump, and the controller adjusts the output flow of the water pump according to the monitoring value of the temperature monitoring device.

[0026] In a second aspect, the present invention provides a method for controlling a steam oven, the steam oven comprising:

[0027] A steam generating device, which is disposed on the inner container and communicated with the interior of the inner container, and is used to introduce steam into the inner container;

[0028] a water pump, which is arranged on the inner tank and is connected to the steam generating device, and is used to control the water flow entering the steam generating device;

[0029] The control method comprises:

[0030] Acquiring the water temperature at the inlet side of the steam generating device and the steam temperature at the outlet side of the steam generating device;

[0031] The operating power of the steam generating device is adjusted according to the water temperature and the steam temperature.

[0032] When the above technical solution is adopted, during operation, by monitoring the initial water temperature and the temperature of the superheated steam generated, and then according to the preset cooking temperature, the operating power of the steam generating device and the water pump is adjusted in real time through the controller, so as to achieve accurate and fast control of the cooking temperature.

[0033] Preferably, the step of “adjusting the operating power of the steam generating device according to the water temperature and the steam temperature” specifically includes:

[0034] When the steam temperature is greater than a preset temperature, controlling the operating power of the steam generating device to decrease; and / or

[0035] When the steam temperature is lower than a preset temperature, the operating power of the steam generating device is controlled to increase.

[0036] When the above technical solution is adopted, the generated steam temperature can be compared with the preset cooking temperature. The controller will adjust the steam generating device and the water pump according to the temperature comparison result, thereby realizing the regulation of the steam temperature so that the steam temperature meets the preset temperature and improves the taste of the cooked food.

[0037] Preferably, the steam oven further comprises:

[0038] A flow transmitter, which is arranged at the inlet side of the steam generating device and is used to monitor the water flow at the inlet side;

[0039] A flow regulator, which is arranged at the inlet side of the steam generating device, and the controller controls the working state of the flow regulator according to the monitoring value of the flow transmitter;

[0040] The control method further comprises:

[0041] Acquiring flow information at the inlet side of the steam generating device;

[0042] The working state of the flow regulator is adjusted according to the flow information.

[0043] When the above technical solution is adopted, the water flow rate input into the steam generating device can be reasonably controlled by the flow regulator according to the required steam volume, ensuring that the steam generation amount and generation speed meet the preset requirements. The present application can adjust the steam temperature and steam volume in real time by simultaneously controlling the heating power of the steam generating device and the power of the water pump, thereby improving the flexibility and practicality of the steam oven.

[0044] Preferably, the step of "adjusting the working state of the flow regulator according to the flow value" specifically includes:

[0045] When the flow information is less than the preset flow information, controlling the operating power of the water pump to increase; and / or

[0046] When the flow information is greater than the preset flow information, the operating power of the water pump is controlled to decrease.

[0047] When the above technical solution is adopted, the flow regulator automatically adjusts the operating power of the water pump according to the preset flow information, thereby achieving precise control of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0049] Figure 1 It is a schematic diagram of the structure of the steam oven of the present invention;

[0050] Figure 2 is a top view of the steam oven of the present invention;

[0051] Figure 3 is a flow chart of the control method of the present invention;

[0052] Figure 4 It is a flow chart of specific steps of the control method of the present invention.

[0053] The accompanying drawings are as follows:

[0054] 1. Inner tank; 2. Water storage device; 3. Water pump; 4. First pipeline; 5. Second pipeline; 6. Steam generating device; 7. Third pipeline; 8. Second temperature monitoring device; 9. First temperature monitoring device; 10. Flow regulator; 11. Flow transmitter; 12. First heating tube; 13. Second heating tube; 14. Electric regulating valve; 15. Third heating tube. DETAILED DESCRIPTION

[0055] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0056] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the relevant devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, ordinal numbers such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Reference Figure 1 , is a steam oven disclosed in an embodiment of the present application, comprising an outer box body (not shown in the figure) and an inner pot 1, wherein the inner pot 1 is arranged inside the outer box body, and when cooking, the food to be cooked is placed inside the inner pot 1. A water storage device 2 is arranged on the top surface of the inner outer wall, which is used to store water for the steam generating device 6, and the water stored inside the water storage device 2 is water at room temperature. A steam generating device 6 and a water pump 3 are also arranged on the outer wall of the inner pot 1, and the water pump 3 is installed between the water storage device 2 and the steam generating device 6. The water pump 3 is connected to the water storage device 2 through a first pipe 4, and the water pump 3 is connected to the inlet side of the steam generating device 6 through a second pipe 5. The outlet side of the steam generating device 6 is connected to the inner pot 1 through a third pipe 7, which is used to transport the superheated steam generated by the steam generating device 6 to the inner pot 1 to cook the food.

[0059] In actual operation, the water pump 3 can be started to transport the normal temperature water of the water storage device 2 to the steam generating device 6 through the first pipe 4 and the second pipe 5. In order to monitor the initial temperature of the water, a first temperature monitoring device 9 is provided at the inlet side of the steam generating device 6. In order to monitor the temperature of the generated steam, the outlet side of the steam generating device 6 is connected to the steam generating device 6, the first temperature monitoring device 9, the second temperature monitoring device 8 and the water pump 3 in communication. The controller (not shown in the figure) regulates the power of the water pump 3 or the steam generating device 6 according to the first temperature monitoring device 9 and the second temperature monitoring device 8, thereby regulating the temperature of the steam.

[0060] Reference Figure 2Furthermore, the steam generating device 6 includes a first heating tube 12, a second heating tube 13 and a third heating tube 15 connected in sequence. One end of the first heating tube 12 is connected to the inlet side of the steam generating device 6. When the steam oven is started, the normal temperature water in the water storage device 2 enters the first heating tube 12 from the inlet side of the steam generating device 6 for heating. The normal temperature water becomes high temperature water in the first heating tube 12. The high temperature water then flows into the second heating tube 13. The high temperature water is heated to saturated steam in the second heating tube 13. The saturated steam then enters the third heating tube 15. The saturated steam is heated to superheated steam in the third heating tube 15. One end of the third heating tube 15 is connected to the outlet side of the steam generating device 6. The superheated steam flows from the outlet side of the steam generating device 6 into the third pipe 7, and then flows into the inner pot 1 through the third pipe 7 to cook the food.

[0061] It should be noted that the first heating tube 12, the second heating tube 13 and the third heating tube 15 of the steam generating device 6 are arranged in parallel. The parallel arrangement reduces the footprint of the three heating tubes, and because the three heating tubes are arranged in parallel, the heat loss around the heating tubes can be reduced, and the water or steam can be better heated. Secondly, the controller is also connected to the water pump 3 in communication. The controller adjusts the output flow of the water pump 3 according to the monitoring value of the temperature monitoring device. Through the control of the water pump 3 by the controller, the temperature of the superheated steam generated can be changed by adjusting the water flow. Due to the different water intake of the steam generating device 6, the state of the water in the first heating tube 12 and the second heating tube 13 includes different situations, and the third heating tube 15 is mainly used to achieve the reheating of saturated steam.

[0062] The state of the water in the first heating tube 12 and the second heating tube 13 includes the following two situations: First, when the water inflow of the evaporation device is large, the temperature at the outlet of the steam generating device 6 is low. In this case, the first heating tube 12 is used to heat the normal temperature water to make it hot water, and the second heating tube 13 is used to heat the hot water to make it saturated steam, and then the saturated steam is heated to superheated steam by the third heating tube 15. Second, when the water inflow of the steam generating device 6 is small, the temperature at the outlet of the steam generating device 6 is high. In this case, the transformation from normal temperature water to saturated steam can be realized in the first heating tube 12, and then the saturated steam can be heated by the second heating tube 13 and the third heating tube 15 to be superheated steam with a higher temperature. Therefore, when the operating power of the steam generating device 6 is not changed, the temperature of the superheated steam can also be changed by changing the operating power of the water pump 3, that is, controlling the size of the water inflow of the steam generating device 6.

[0063] Furthermore, although the water pump 3 adopts a DC peristaltic pump and the water volume is relatively stable, the water flow delivered by the water pump 3 still exists, and the steam oven is also provided with a flow transmitter 11, which is provided at the inlet side of the generating device and is used to monitor the change of the water flow. When the water flow at the inlet side of the steam generating device 6 fluctuates, the flow transmitter 11 will monitor the change of the water flow and feed back the fluctuation of the water flow to the flow regulator 10, and the flow regulator 10 will immediately adjust the water flow to minimize the impact caused by the flow disturbance.

[0064] Furthermore, an electric regulating valve 14 for controlling the flow of superheated steam is also provided on the third pipe 7, and the electric regulating valve 14 is controlled by a controller. When cooking food, the controller controls the electric regulating valve 14 according to different cooking requirements within a preset time period, thereby changing the flow of superheated steam sprayed into the inner pot 1. When cooking is completed, in order to stop the steam generator 6 from inputting steam to the inner pot 1 in time, the electric regulating valve 14 can be closed to block the circulation of steam, thereby preventing the user from being burned by excessive steam when the steam oven is turned on. In addition, since there is flow disturbance during the circulation of water flow, the temperature of the generated steam will also have temperature disturbance. When the steam temperature fluctuates, the control system of the steam oven will compare the actual temperature of the steam with the preset temperature, and then the controller controls the steam generator 6 and the water pump 3 to adjust the steam temperature to ensure that the output steam temperature meets the preset temperature, which can effectively improve the taste of the cooked food.

[0065] It should be noted that the controller in the present application includes a DC voltage regulator for adjusting the water pump 3, and the DC voltage regulator changes the flow rate of the water pump 3 by inputting different voltages to the water pump 3. The controller also includes a thyristor regulator for adjusting the power of the steam generator 6, thereby adjusting the temperature of the superheated steam generated by the steam generator 6.

[0066] Specifically, in actual use, the user sets a suitable cooking temperature for the ingredients to be cooked, and then the steam oven starts working. The first temperature monitoring device 9 monitors the water temperature and converts the water temperature into an electrical signal and inputs it into the control system. The control system calculates the power required to be input by the steam generator 6, and then calculates the required voltage. The specified voltage is input to the steam generator 6 via the controller, so that the steam generator 6 heats the normal temperature water. The second temperature sensor on the outlet side of the steam generator 6 feeds back the generated steam temperature to the control system, and the thyristor regulator adjusts the voltage of the steam generator 6 to achieve precise control of the superheated steam temperature. When the water temperature or water flow rate changes, the water pump 3 and the steam generator 6 are dynamically regulated in the above manner.

[0067] Reference Figure 3The present application also discloses a control method for a steam oven, which specifically comprises the following steps:

[0068] S101: Acquire the water temperature at the inlet side of the steam generating device 6 and the steam temperature at the outlet side of the steam generating device 6 .

[0069] In the above steps, the user first needs to manually input the required cooking time, cooking temperature and cooking mode into the control panel of the steam oven, and then the steam oven cooks the ingredients. You can also preset recipes in the steam oven, such as pasta, meat, vegetables and soup, and then the steam oven will intelligently input and control the cooking mode, cooking temperature and cooking time according to the input recipe information, and then cook the ingredients.

[0070] S102: Adjusting the operating power of the steam generating device 6 according to the water temperature and the steam temperature.

[0071] It is understandable that, since the water temperature in the water storage device 2 may be low when the steam oven is not in use, when the steam oven is started, the steam generating device 6 needs to operate at a higher operating power so as to generate superheated steam that meets the requirements more quickly. However, after the steam oven has been running for a period of time, the heat emitted by the steam oven will increase the water temperature in the water storage device 2, so it is not necessary for the steam generating device 6 to operate at a higher power. The above method can be used to intelligently control the steam generating device 6 and reduce the energy consumption of the steam oven.

[0072] Reference Figure 4 In one implementation of the present application, step S102 further includes:

[0073] S1021: When the steam temperature is greater than a preset temperature, the operating power of the steam generating device 6 is controlled to decrease.

[0074] S1022: When the steam temperature is lower than a preset temperature, the operating power of the steam generating device 6 is controlled to increase.

[0075] It should be noted that in the above steps S1021 and S1022, when the superheated steam temperature monitored by the second temperature monitoring device 8 is different from the temperature preset by the user, the second temperature monitoring device 8 will output the temperature of the superheated steam actually output to the control system of the steam oven, and the control system will calculate the power that needs to be adjusted by the steam generating device 6 according to the set program, and perform high-precision adjustment on the steam generating device 6 through the controller to ensure the stability of the outlet temperature.

[0076] Furthermore, the control method of the steam oven further includes the following steps:

[0077] S103: Obtain flow information at the steam oven generator inlet side.

[0078] It is understandable that although the water pump 3 adopts a DC peristaltic pump and the water volume is relatively stable, the water flow transported by the water pump 3 still exists. By obtaining the fluctuation information of the water flow on the inlet side, the power of the steam generating device 6 can be better controlled.

[0079] S104: Adjust the working state of the flow regulator 10 according to the flow information.

[0080] In one implementation of the present application, step 104 further includes:

[0081] S1041: When the flow information is less than the preset flow information, the operating power of the water pump 3 is controlled to increase.

[0082] S1042: When the flow information is greater than the preset flow information, the operating power of the water pump 3 is controlled to decrease.

[0083] It should be noted that, in the above steps S1041 and S1042, when the flow at the inlet side of the steam generating device 6 fluctuates, the flow transmitter 11 installed at the inlet side of the steam generating device monitors the change in water flow, and the flow regulator 10 immediately adjusts the water flow to minimize the impact of the flow disturbance.

[0084] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A steam oven, characterized in that: include: outer box; An inner liner, which is arranged in the outer box; A water storage device, which is arranged on the outer wall of the inner container; A steam generating device is arranged on the outer wall of the inner pot, one end of the steam generating device is connected to the water storage device, and the other end of the steam generating device is connected to the inner pot, and a water pump is arranged between the steam generating device and the water storage device; A temperature monitoring device for monitoring the water temperature at the inlet side of the steam generating device and the steam temperature at the outlet side of the steam generating device; and A controller is respectively connected to the steam generating device and the temperature monitoring device for communication. The controller controls the steam generating device to adjust the operating power according to the monitoring value of the temperature monitoring device, thereby adjusting the steam temperature.

2. The steam oven according to claim 1, characterized in that: The steam generating device includes a first heating tube, a second heating tube and a third heating tube connected in sequence; the first heating tube is used to heat the normal temperature water from the water storage device into high temperature water, the second heating tube is used to heat the high temperature water into saturated steam, and the third heating tube is used to perform secondary heating on the saturated steam.

3. The steam oven according to claim 1, characterized in that: The temperature monitoring device comprises: A first temperature monitoring device, which is arranged at the inlet side of the steam generating device and is used for the water temperature at the inlet side; The second temperature monitoring device is arranged at the outlet side of the steam generating device and is used to monitor the steam temperature at the outlet side.

4. The steam oven according to claim 2, characterized in that: Also includes: A flow transmitter, which is arranged at the inlet side of the steam generating device and is used to monitor the water flow at the inlet side; A flow regulator is arranged at the inlet side of the steam generating device, and the controller controls the working state of the flow regulator according to the monitoring value of the flow transmitter.

5. The steam oven according to claim 1, characterized in that: An electric regulating valve for controlling the flow of superheated steam is arranged on the pipeline between the steam generating device and the inner tank.

6. The steam oven according to claim 1, characterized in that: The controller is also in communication connection with the water pump, and the controller adjusts the output flow of the water pump according to the monitoring value of the temperature monitoring device.

7. A method for controlling a steam oven, characterized in that: The steam oven comprises: A steam generating device, which is disposed on the inner container and communicated with the interior of the inner container, and is used to introduce steam into the inner container; a water pump, which is arranged on the inner tank and is connected to the steam generating device, and is used to control the water flow entering the steam generating device; The control method comprises: Acquiring the water temperature at the inlet side of the steam generating device and the steam temperature at the outlet side of the steam generating device; The operating power of the steam generating device is adjusted according to the water temperature and the steam temperature.

8. The control method according to claim 7, characterized in that: The step of "adjusting the operating power of the steam generating device according to the water temperature and the steam temperature" specifically includes: When the steam temperature is greater than a preset temperature, controlling the operating power of the steam generating device to decrease; and / or When the steam temperature is lower than a preset temperature, the operating power of the steam generating device is controlled to increase.

9. The control method according to claim 7, characterized in that: The steam oven also includes: A flow transmitter, which is arranged at the inlet side of the steam generating device and is used to monitor the water flow at the inlet side; A flow regulator, which is arranged at the inlet side of the steam generating device, and the controller controls the working state of the flow regulator according to the monitoring value of the flow transmitter; The control method further comprises: Acquiring flow information at the inlet side of the steam generating device; The working state of the flow regulator is adjusted according to the flow information.

10. The control method according to claim 7, characterized in that: The step of "adjusting the working state of the flow regulator according to the flow value" specifically includes: When the flow information is less than the preset flow information, controlling the operating power of the water pump to increase; and / or When the flow information is greater than the preset flow information, the operating power of the water pump is controlled to decrease.

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