CN115095985A

CN115095985A - Circulating preheating method and control method for instant water dispenser

Info

Publication number: CN115095985A
Application number: CN202210756272.9A
Authority: CN
Inventors: 朱泽春; 徐小亮; 谷晓峰; 窦小勇
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-23

Abstract

The application discloses a circulating preheating method and a control method of an instant water heater, wherein the circulating preheating method comprises the following steps: after water supplement is completed, the water outlet module is kept closed, and the water pumping device and the instant heating device are controlled to work, so that water in the heat preservation tank circulates in the heat preservation tank, the water outlet pipeline and the water supplement pipeline; when the temperature in the heat preservation tank reaches a first preset temperature, the instant heating device and the water pumping device are sequentially controlled in a time-sharing mode to stop working. By the circulating preheating method and the control method, the technical problems that in the prior art, the temperature rising speed of water temperature is too high and is not easy to control in the process of directly heating water by using the instant heat pipe, and the target temperature cannot be quickly reached when the temperature rising requirement of the water temperature is too high are solved, and the technical effect of accurately controlling instant heat body heating is realized.

Description

Circulating preheating method and control method for instant water dispenser

Technical Field

The invention relates to the field of water outlet machines, in particular to a circulating preheating method and a control method for an instant heating water outlet machine.

Background

Because the environment is free of air and air temperature in the vacuum state and cannot detect the environment temperature by means of gas molecule movement, the stability of temperature detection of the equipment in the vacuum environment is poor, for drinking equipment, the phenomenon that the contact and detection of flowing liquid can be well improved is adopted, but the feedback of the temperature detection of the flowing liquid in the vacuum environment is slow, the conditions that the equipment action is slow and the temperature adjustment is inaccurate can exist according to the action of the temperature adjusting equipment, the application improves the action state of the equipment by optimizing an electric control program, the temperature adjustment accuracy of a liquid split device in the vacuum environment is improved, and an applicant further researches and applies the technology to household drinking products, so that the temperature detection in the air environment is more accurate, and the liquid temperature feedback can be realized, the reasonable adaptation of equipment action and intensification state has effectively promoted the accurate nature of temperature regulation of domestic drinking water product.

At present, many existing water outlets such as water purifiers, tea bar machines and water dispensers adopt the technical scheme of arranging an instant heating device and heating water in the water outlets by adopting an instant heating water outlet control method based on the instant heating device so as to enable the water temperature of the outlet water to reach the preset water temperature. The control method of the instant heating water outlet machine can achieve the technical effects of saving water and electricity, but also brings many problems; on one hand, the temperature rising speed of the water is too high in the process of directly heating the water by adopting the heat pipe, and the control is not easy; on the other hand, when the requirement for the temperature rise of the water temperature is too high, the target temperature cannot be reached quickly. Therefore, there is a need to provide a method for preheating the circulation of an instant water heater and a control method thereof, so as to solve at least the technical problems in the related art.

The applicant invents a water supply device for a space capsule based on a space kitchen project participating in research and development, solves the water supply requirement of astronauts in the space capsule, further studies the application of the water supply device to household water purification products, and particularly makes a study on how an instant water heater keeps the internal circulation heat preservation function of a machine body.

Disclosure of Invention

In order to solve the technical problems that the temperature rise speed of the water temperature is too high in the heating process and is not easy to control, and the target temperature cannot be quickly reached when the temperature rise requirement of the water temperature is too high in the control method of the instant water heater in the background technology, the invention provides a circulating preheating method and a control method of the instant water heater.

According to an aspect of the application, a circulation preheating method of an instant heating water outlet machine is provided, the instant heating water outlet machine comprises a water inlet module, a heat preservation module and a water outlet module, the heat preservation module comprises a heat preservation tank, a water outlet pipeline and a water supplementing pipeline, the water supplementing pipeline is arranged at a water inlet of the heat preservation tank and the water inlet module, the water outlet pipeline is arranged between a water outlet of the heat preservation tank and the water outlet module, the water outlet pipeline is provided with a water pumping device and an instant heating device which are sequentially connected, the water outlet of the instant heating device is communicated with the water supplementing pipeline, and the circulation preheating method comprises the following steps: the system comprises a circulating preheating mode, a water inlet pipeline, a water outlet pipeline and a water replenishing pipeline, wherein the circulating preheating mode comprises the steps of obtaining the temperature of the bottom of the heat-preserving tank and the water outlet temperature of the instant heating device, and controlling the water pumping device and the instant heating device to work when the temperature of the bottom of the heat-preserving tank is lower than a first preset temperature so as to enable water in the heat-preserving tank to circulate in the heat-preserving tank, the water outlet pipeline and the water replenishing pipeline; when the temperature of the outlet water of the instant heating device is higher than a second preset temperature, the instant heating device and the water pumping device are closed in sequence in a time-sharing mode.

Optionally, the circulation preheating method includes a first water replenishing mode, a water replenishing valve is arranged on the water replenishing pipeline, when the instant heating water outlet machine is powered on for the first time, the first water replenishing mode is entered, the water replenishing valve is opened, when the heat preservation tank is in a water full state, the first water replenishing mode is completed, and the circulation preheating mode is entered.

Optionally, an inlet and outlet pipeline is arranged between the water inlet module and the heat preservation module, and when the instant heating water dispenser is in the first water replenishing mode, water enters the inlet and outlet pipeline from the water inlet module, enters the water replenishing pipeline from the inlet and outlet pipeline, and finally enters the heat preservation tank.

Optionally, the circulation preheating method further includes that when a user takes hot water, the water replenishing solenoid valve is closed, and the water pumping device pumps water in the heat preservation tank out and sends the water into the inlet and outlet pipeline, and then the water enters the water outlet module through the inlet and outlet pipeline.

Optionally, when the inlet water temperature of the instant heating device is lower than the first preset temperature value, controlling the water pumping device and the instant heating device to work, so that the water in the thermal insulation tank circulates in the thermal insulation tank, the water outlet pipeline and the water replenishing pipeline, and the step includes: the water pumping device and the instant heating device are sequentially started, whether water exists in the instant heating device is detected, and when the instant heating device does not contain water, the instant heating device and the water pumping device are sequentially controlled to stop working; or starting the water pumping device, and detecting whether water exists in the instant heating device; and when water exists in the instant heating device, starting the instant heating device.

Optionally, the cyclic preheating method further comprises: detect the temperature of intaking of instant heating device, work as the temperature of holding tank bottom does not reach first predetermined temperature, and when the temperature of intaking of instant heating device reached first predetermined temperature, open pumping device detects once more the holding tank bottom temperature, if the temperature of holding tank bottom that detects once more has not reached first predetermined temperature yet, then opens the instant heating device.

Optionally, when the temperature of the outlet water of the instant heating device is higher than a second preset temperature, the step of sequentially closing the water pumping device and the instant heating device in a time-sharing manner comprises: and controlling the instant heating device to stop working, and controlling the water pumping device to stop working after keeping the water pumping device to continuously work for a first preset time.

Optionally, the method further comprises: acquiring the water inlet temperature of the instant heating device and the water outlet temperature of the instant heating device; calculating the temperature difference between the inlet water temperature and the outlet water temperature of the instant heating device; judging whether the temperature difference is larger than a preset temperature difference or not; and when the temperature difference is greater than the preset temperature difference, after the water pumping device continuously works for a first preset time, controlling the water pumping device to stop working and outputting an alarm signal.

Optionally, the preset temperature difference is 20 ℃ to 40 ℃.

According to another aspect of the application, an instant heating water dispenser control method is provided, which includes any one of the above-mentioned instant heating water dispenser circulation preheating methods, and enters a constant temperature regulation mode when a water outlet instruction is obtained.

Determining whether an instant heating water outlet machine enters a circulating preheating mode or not by acquiring the temperature of the bottom of the heat-preservation tank and the water outlet temperature of the instant heating device, and controlling the water pumping device and the instant heating device to work when the temperature of the bottom of the heat-preservation tank is lower than a first preset temperature so that water in the heat-preservation tank circulates in the heat-preservation tank, the water outlet pipeline and the water replenishing pipeline; and when the water outlet temperature of the instant heating device is higher than a second preset temperature, the instant heating device and the water pumping device are sequentially turned off in a time-sharing manner. When the first preset temperature is reached, the work of the instant heating device is stopped firstly, water flow continues to flow through the instant heating device, the instant heating device can be prevented from being burnt, the service life of the instant heating device is shortened, on the other hand, the water pumping device pumps water from the bottom to the instant heating device and returns to the heat preservation tank from the top of the heat preservation tank to form circulation, the temperature of the top of the heat preservation tank can be higher than that of the bottom, the temperature of water in the heat preservation tank is enabled to be uneven, after the work of the heating device is stopped, the water pumping device is enabled to delay the work for preset time, the water in the heat preservation tank is fully mixed, the situation that the water temperature in the heat preservation tank is high and low is prevented, and the situation that the water outlet temperature is unstable when a user takes water is prevented.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a water path diagram of an instant heating water dispenser according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart of a method for preheating the circulation of the instant water dispenser according to an embodiment of the present invention;

fig. 3 is a water path diagram of an instant heating water dispenser according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

According to an aspect of the embodiments of the present application, there is provided a circulation preheating method for an instant water dispenser,

as shown in fig. 1 and fig. 3, the instant heating water dispenser includes a water inlet module 10, a heat preservation module 20 and a water outlet module 30, the heat preservation module 20 includes a heat preservation tank 21, a water outlet pipeline 201 and a water replenishing pipeline 202, the water replenishing pipeline 202 is arranged between a water inlet of the heat preservation tank and the water inlet module 10, the water outlet pipeline 201 is arranged between a water outlet of the heat preservation tank and the water outlet module 30, the water replenishing pipeline 202 is provided with a water replenishing valve 231, the water outlet pipeline 302 is provided with a water pumping device 221 and an instant heating device 222 which are sequentially connected, a water outlet of the instant heating device 222 is communicated with the water replenishing pipeline 202, and a water inlet and outlet pipeline 4 is arranged between the water inlet module 10 and the heat preservation module 20;

and when the outlet water temperature of the instant heating device is higher than a second preset temperature, the instant heating device and the water pumping device are closed in sequence in a time-sharing manner. In this embodiment, the method for circularly preheating further includes a first water replenishing mode, that is, when the hot water dispenser is powered on for the first time, the hot water dispenser enters the first water replenishing mode, the water replenishing valve is opened, and when the heat-preserving tank is in a water full state, the first water replenishing mode is completed, and the hot water dispenser enters the circularly preheating mode. When the instant heating water outlet machine is in the first water supplementing mode, water enters the inlet and outlet pipeline 4 from the water inlet module, enters the water supplementing pipeline from the inlet and outlet pipeline 4, and finally enters the heat preservation tank.

As shown in fig. 1, the cyclic preheating mode includes:

s102, acquiring the bottom temperature of the heat-preservation tank and the outlet water temperature of the instant heating device;

as for the step S102, as an optional embodiment, a full water level detection device may be disposed in the heat-preservation tank 21, when the heat-preservation tank 21 is filled with water, the full water level detection device is triggered to output a signal for detecting the full water level, and the controller confirms that the water filling is completed after recognizing the water level detection signal; after the water replenishing is finished, the water replenishing valve 231 is controlled to be closed, and meanwhile, the water outlet valve is controlled to be closed so as to keep the water outlet module closed; controlling the water pumping device 221 and the instant heating device 222 to work so that the water in the heat-preserving tank 21 circulates in the heat-preserving tank 21, the water outlet pipeline 201 and the water supplementing pipeline 202, and circularly preheating the water supplemented in the heat-preserving tank 21 or the water with the temperature not reaching the ending condition of circular preheating in the heat-preserving tank 21. Through the technical scheme, the technical effect of circularly preheating the water in the heat-preserving tank 21 is realized.

S104, when the temperature of the bottom of the heat-preservation tank is lower than a first preset temperature, controlling the water pumping device and the instant heating device to work, and enabling water in the heat-preservation tank to circulate in the heat-preservation tank, the water outlet pipeline and the water replenishing pipeline;

and when the water outlet temperature of the instant heating device is higher than a second preset temperature, the instant heating device and the water pumping device are sequentially turned off in a time-sharing manner. As for the step S104, as an alternative embodiment, a temperature detection device is disposed in the bottom of the heat-preserving tank 21 to detect the temperature of the bottom of the heat-preserving tank 21; when the temperature in the heat-preserving tank 21 reaches a first preset temperature, the instant heating device 222 and the water pumping device 221 are sequentially controlled in a time-sharing manner to stop working; the time-sharing sequential control of the instant heating device 222 and the water pumping device 221 to stop working may include determining whether the water temperature is greater than a first preset temperature, where the first preset temperature may be determined based on a target preheating temperature selected by a user; when the outlet water temperature reaches the first preset temperature, the instant heating device 222 may be controlled to stop working, the water pumping device 221 may continue to work, the water flow may continue to flow through the instant heating device 222, and the water pumping device 221 may be controlled to stop working after the water pumping device 221 works for a preset time period. On one hand, when the first preset temperature is reached, the operation of the instant heating device 222 is stopped first, so that the water flow continues to flow through the instant heating device 222, thereby preventing the instant heating device 222 from being burnt dry, and reducing the service life of the instant heating device 222, and on the other hand, because during circulation, the water pumping device 221 pumps water from the bottom to the instant heating device 222 and returns to the heat preservation tank 21 from the top of the heat preservation tank 21 to form circulation, the temperature at the top of the heat preservation tank 21 may be higher than the temperature at the bottom, so that the temperature of the water in the heat preservation tank 21 is uneven, after the operation of the heating device is stopped, the water pumping device 221 is delayed to operate for a preset time, so that the water in the heat preservation tank 21 is mixed fully, the high and low temperature of the water in the heat preservation tank 21 is prevented, and the unstable outlet water temperature when a user takes water is prevented.

In this embodiment, the temperature at the bottom of the holding tank determines whether to enter the circulation preheating mode, i.e. the temperature of the outlet water of the heating device determines whether to jump out of the circulation preheating mode. Because rivers direction, in the circulation module, except the condition of holding vessel moisturizing for the first time, the delivery port of instant heating device is connected to the water inlet of holding vessel, and the delivery port of holding vessel is connected the water inlet of instant heating device, so the water after the instant heating device heating can get into from the top of holding vessel, then the temperature of tank bottoms is the minimum in the holding vessel, so select the tank bottoms at the holding vessel to set up the temperature and detect. The water outlet end of the instant heating device is communicated with the water inlet of the heat preservation tank and is also connected with the water outlet module through the inlet and outlet pipeline 4. In this embodiment, the inlet and outlet pipeline 4 is a water inlet pipeline for communicating the water inlet module with the thermal insulation tank when water is supplied into the thermal insulation tank, and is a water outlet pipeline for communicating the water outlet module with the thermal insulation tank when water is delivered to the water outlet module.

As an exemplary embodiment, the method further comprises a first water replenishing mode, when the instant heating water dispenser is powered on for the first time, the first water replenishing mode is entered, the water replenishing valve is opened, when the heat preservation tank is in a water full state, the first water replenishing mode is completed, and the circulation preheating mode is entered.

When a user takes hot water, the water replenishing electromagnetic valve is closed, and the water pumping device pumps the water in the heat preservation tank out and sends the water into the inlet and outlet pipeline, and then the water enters the water outlet module through the inlet and outlet pipeline.

When water is replenished, the water replenishing valve 231 is opened, water enters the heat-insulating tank 21 through the water replenishing pipeline 202, and when the heat-insulating tank 21 reaches a water full state, the water replenishing mode is completed. When the water pumping device 221 and the instant heating device 222 are controlled to work, it is required to first determine whether the inlet water temperature of the instant heating device 222 is less than the first preset temperature value; namely whether the water temperature in the heat-preserving tank 21 is lower than a preset preheating temperature (a first preset temperature value); and when the inlet water temperature of the instant heating device 222 is lower than the first preset temperature value, performing a step of controlling the water pumping device 221 and the instant heating device 222 to work. In an optional embodiment, besides detecting the water inlet temperature of the instantaneous heating device 222 after water supplement is completed, the water inlet temperature may be detected in real time or at a preset interval time under the condition that no water supplement is performed, and when the water inlet temperature of the instantaneous heating device 222 is detected to be lower than the first preset temperature, the steps of controlling the operation of the water pumping device 221 and the operation of the instantaneous heating device 222 may be performed. In this embodiment, the tank bottom temperature of the heat preservation tank is selected to represent the water inlet temperature of the instant heating device, when the temperature of the tank bottom is less than a first preset temperature, the water suction pump is started first, the circulation pipeline of the heat preservation module is started first, the water in the heat preservation tank is mixed with the temperature, then the temperature of the tank bottom of the heat preservation tank is detected again, if the temperature is still less than the first preset temperature, the instant heating body is started, and the circulation preheating mode is started. Here, because the water inlet of holding vessel sets up in the top, and the delivery port sets up in the bottom, and the delivery port of instant heating device communicates the water inlet of holding vessel, then there is the temperature stratification phenomenon in the water in the holding vessel, and the water that the temperature is high is located the top of jar, and the water that the temperature is low is located the below of jar, then for guaranteeing to obtain the temperature of more accurate jar internal temperature, further temperature measurement after mixing the temperature with the water intensive mixing in jar earlier.

As to the above technical solution, as an optional embodiment, a temperature detection device may be disposed at a water inlet of the instant heating device 222 to detect a water inlet temperature of the instant heating device 222, so as to determine whether the water inlet temperature of the instant heating device 222 is smaller than the first preset temperature value; when the water inlet temperature of the instant heating device 222 is lower than the first preset temperature value, it is represented that the water in the heat-preserving tank 21 does not reach the first preset temperature value, that is, it is represented that the water in the heat-preserving tank 21 does not reach the first preset temperature of the circulating preheating target, at this time, a step of controlling the operation of the water pumping device 221 and the instant heating device 222 is performed, that is, the water pumping device 221 and the instant heating device 222 are controlled to operate, so that the water in the heat-preserving tank 21 circulates in the heat-preserving tank 21, the water outlet pipeline 201 and the water replenishing pipeline 202, so as to ensure that the water in the heat-preserving tank 21 is in the circulating preheating state and reaches the first preset temperature of the circulating preheating target. As an exemplary embodiment, when the inlet water temperature of the instant heating device 222 is less than the first preset temperature value, the step of controlling the operation of the water pumping device 221 and the instant heating device 222 includes: the water pumping device 221 and the instant heating device 222 are sequentially started, whether water exists in the instant heating device 222 or not is detected, and when no water exists in the instant heating device 222, the instant heating device 222 and the water pumping device 221 are sequentially controlled to stop working; when the inlet water temperature is determined to be lower than the first preset temperature, the circulation preheating mode needs to be entered, at this time, the water pumping device 221 is started first, water in the water replenishing pipeline 202 is pre-circulated first, then the instant heating device 222 is started, after the instant heating device 222 is started, whether water exists in the instant heating device 222 or not can be detected, when water does not exist, in order to prevent the instant heating device 222 from being burnt, the instant heating device 222 can be controlled to stop working, and after the water pumping device 221 delays for a period of time, the working is stopped.

The first preset temperature can be any temperature, and can be the default temperature of the instant heating water outlet machine local machine or the temperature set by a user. For another alternative embodiment of controlling the operation of the water pumping device 221 and the instant heating device 222, the water pumping device 221 may be started first, and after the water pumping device 221 is started, whether water exists in the instant heating device 222 or not may be detected; when water is present in the instant heating device 222, the instant heating device 222 is turned on. The instant heating device 222 can be ensured to be opened again under the condition of water, and dry burning is further prevented.

Optionally, a signal indicative of a water outlet machine fault is output when it is confirmed that there is no water in the hot body. As an optional implementation manner, dry-burning detection devices may be disposed at two ends inside the instant heating body, and the dry-burning detection devices are preferably dry-burning electrodes; when the interior of the instant heater has no water, the dry-heating electrode outputs a dry-heating signal, and the controller confirms that the instant heater has no water when recognizing the dry-heating signal, otherwise, confirms that the instant heater has water.

Through the technical scheme, the technical effects of avoiding instant heating body dry burning and improving the safety performance of products are achieved. As an exemplary embodiment, the determining whether the inlet water temperature of the instant heating device 222 is less than the first preset temperature value includes: detecting the water inlet temperature of the instant heating device 222, when the water inlet temperature of the instant heating device 222 does not reach the first preset temperature, starting the water pumping device 221, detecting the water inlet temperature of the instant heating device 222 again, and if the water inlet temperature detected again does not reach the first preset temperature, starting the instant heating device 222.

For the above technical solution, a temperature detection device may be disposed at the water inlet of the instant heating device 222; optionally, the temperature detecting device may include a temperature sensor, a thermosensitive NTC, and other detecting devices that can detect the temperature of the water inlet, which is not limited herein; since the temperature detection means is provided at the water inlet of the instant heating means 222, the detected temperature is not necessarily the temperature of the water in the heat-insulating tank 21, and the detected temperature value may be lower than the temperature of the water in the heat-insulating tank 21; for example, when no water exists in the water inlet of the temperature detection device, the data detected by the temperature sensor may be data of the instantaneous device 222, and when the instantaneous device 222 is not in the working state, the temperature value detected by the temperature sensor may be room temperature, that is, the water inlet temperature of the instantaneous device 222 may not reach the first preset temperature, at this time, although the water inlet temperature of the instantaneous device 222 does not reach the first preset temperature, it cannot be represented that the water in the thermal insulation tank 21 does not reach the first preset temperature; or, the data detected by the temperature sensor may be the temperature of the water in the water inlet pipeline of the instantaneous heating device 222, and when the water inlet pipeline of the instantaneous heating device 222 is not provided with a heat preservation measure or other conditions, the temperature of the water fed into the instantaneous heating device 222 may also be lower than the first preset temperature, and at this time, although the temperature of the water fed into the instantaneous heating device 222 is not higher than the first preset temperature, the temperature of the water in the heat preservation tank 21 cannot be represented as lower than the first preset temperature; in the above scenario, it cannot be determined whether the temperature of the water in the thermal insulation tank 21 reaches the first preset temperature according to the inlet water temperature of the instant heating device 222; based on this, in order to eliminate the influence caused by the above-mentioned scenario, when the water inlet temperature of the instant heating device 222 does not reach the first preset temperature, the water pumping device 221 is opened, the water inlet temperature of the instant heating device 222 is detected again, if the water inlet temperature detected again does not reach the first preset temperature, the temperature in the heat-preserving tank 21 does not reach the first preset temperature, the temperature of the water in the heat-preserving tank 21 is represented as not meeting the ending condition of the circulation preheating, and at this time, the instant heating body is opened, so as to circularly preheat the temperature in the heat-preserving tank 21 to the first preset temperature; if the re-detected inlet water temperature reaches the first preset temperature, the temperature of the water in the heat-preserving tank 21 is represented to meet the end condition of the circulating preheating, and the water can be discharged normally.

According to the household water dispenser, the problem that in the prior art, the action of equipment is slow according to the action of temperature adjusting equipment is solved, the condition that the temperature adjustment is not accurate is solved, the optimization of an electric control program is realized, the action state of the equipment is improved, the temperature adjustment accuracy of a liquid split device in a vacuum environment is improved, the applicant applies the technology to household water dispenser products, the temperature detection is more accurate under the air environment, the liquid temperature feedback can be realized, the reasonable adaptation of the action and the temperature rise state of the equipment is realized, and the temperature adjustment accuracy of the household water dispenser products is effectively improved.

Through the technical scheme, the control of the instant heating water outlet machine is more accurately realized. As another alternative, in order to prevent the entering of the preheating circulation mode by mistake, the temperature detecting device may be further disposed in the thermal insulation tank 21, and the detected temperature in the thermal insulation tank 21 is taken as the water inlet temperature of the instant heating device 222. In this embodiment, the water inlet pipe of the instant heating device 222 may be disposed at the bottom of the thermal insulation tank 21, and the water inlet pipe of the instant heating device 222 enters the instant heating device 222 through the bottom of the thermal insulation tank 21, so that the water inlet temperature of the instant heating device 222 may be determined by detecting the temperature at the bottom of the thermal insulation tank 21. The entering of the cyclic preheat mode can be triggered more precisely.

For example, the determining whether the inlet water temperature of the instant heating device 222 is less than the first preset temperature value includes: detecting the bottom temperature of the heat-preserving tank 21; when the bottom temperature of the heat preservation tank 21 does not reach the first preset temperature, the water pumping device 221 is opened, and the instant heating body is opened.

Illustratively, when the temperature of the bottom of the thermal insulation tank 21 does not reach the first preset temperature, it represents that the circulating preheating of the water in the thermal insulation tank 21 is not performed or the time interval between the circulating preheating of the water in the thermal insulation tank 21 and the last execution of the circulating preheating is too long, so that the temperature of the water in the thermal insulation tank 21 is cooled below the first preset temperature again, and the starting condition for executing the circulating preheating of the thermal insulation tank 21 is met; at this time, if the water discharging operation is performed, the discharged water temperature may not reach the target temperature selected by the user, or the temperature may overshoot due to heating with a larger heating power. Based on this, when the bottom temperature of the thermal insulation tank 21 does not reach the first preset temperature, the water pumping device 221 is turned on, the instant heating body is turned on, and the circulating preheating is started.

As an exemplary embodiment, when the outlet water temperature of the instant heating device is higher than a second preset temperature, the step of sequentially closing the water pumping device and the instant heating device in a time-sharing manner comprises the following steps: and controlling the instant heating device 222 to stop working, and controlling the water pumping device 221 to stop working after the water pumping device 221 keeps working for the first preset time.

For the above technical solution, when the outlet water temperature is higher than the second preset temperature, the abnormal heating condition of the water outlet machine is characterized, for example, the second preset temperature may be a temperature higher than the first preset temperature, for example, the first preset temperature may be set to 50 ℃, and the second preset temperature may be 90-95 ℃. At this time, the instant heating device 222 is controlled to stop working, the water pumping device 221 is kept working for the first preset time, and then the water pumping device 221 is controlled to stop working, so that the instant heating device 222 is cooled.

When the outlet water temperature is higher than the second preset temperature, namely the outlet water temperature is higher than 90-95 ℃, the heating abnormity is represented, and a signal representing the heating abnormity can be output to prompt a user to take corresponding measures.

As another optional implementation manner, the determination of the heating abnormality may also use a temperature difference between the water inlet temperature and the water delivery temperature to perform the determination, and exemplarily obtain the water inlet temperature of the instant heating device 222 and the water outlet temperature of the instant heating device 222; calculating the temperature difference between the inlet water temperature and the outlet water temperature of the instant heating device 222; judging whether the temperature difference is larger than a preset temperature difference or not; and when the temperature difference is greater than the preset temperature difference, outputting an alarm signal.

For the above technical solution, the temperature difference between the water inlet temperature of the instant heating device 222 and the water outlet temperature is calculated, when the temperature difference is greater than the preset temperature difference, the temperature detection device representing the instant heating body is in a fault state, namely the water inlet temperature detection device and/or the water outlet temperature detection device representing the instant heating body are in a fault state, and at this time, an alarm signal is output aiming at the fault state of the water inlet temperature detection device and/or the water outlet temperature detection device of the instant heating body, so as to prompt a user that the water inlet temperature detection device and/or the water outlet temperature detection device of the instant heating body are in an abnormal state.

As an exemplary embodiment, the preset temperature difference is 20 ℃ to 40 ℃. For the technical scheme, the range of the preset temperature difference is 20-40 ℃, when the temperature difference is larger than any value between 20-40 ℃, the temperature detection device of the instant heating body is represented to be in a fault state, namely the water inlet temperature detection device and/or the water outlet temperature detection device of the instant heating body are represented to be in the fault state, and at the moment, an alarm signal is output aiming at the fault state of the water inlet temperature detection device and/or the water outlet temperature detection device of the instant heating body so as to prompt a user that the water inlet temperature detection device and/or the water outlet temperature detection device of the instant heating body are in an abnormal state.

As an exemplary embodiment, the water replenishing pipeline 202 is provided with a water replenishing valve 231; when the instant heating water dispenser is powered on for the first time, the instant heating water dispenser enters a first water supplementing mode, the water supplementing valve 231 is opened, water enters the heat preservation tank 21 through the water supplementing pipeline 202, and the water supplementing mode is completed when the heat preservation tank 21 reaches a water full state.

According to the technical scheme, after a first power-on signal in a first power-on scene is identified, a first water replenishing mode is entered; at this time, the water replenishing valve 231 is controlled to be opened, so that water enters the heat preservation tank 21 through the water replenishing pipeline 202; when the heat-insulating tank 21 reaches the water-full state, completion of the water replenishment mode is confirmed.

The first power-on signal is a signal triggered by first powering on the power supply after the water outlet machine leaves a factory; as an alternative embodiment, a full water level detection device may be provided inside the insulated tank 21; when the heat-preservation tank 21 reaches a full water state, the full water level detection device is triggered to be in an enabling state; optionally, when the full water level detection device is triggered, a full water level detection signal may be output, and when the controller recognizes the full water level detection signal, the controller determines that the heat preservation tank 21 reaches a water full state, and the controller determines that the water supplement mode is completed.

Through the technical scheme, water replenishing under the first power-on scene is realized.

According to another aspect of the application, an instant heating water dispenser control method is provided, and includes any one of the above-mentioned instant heating water dispenser circulation preheating methods, and when a water outlet instruction is obtained, a constant temperature regulation mode is entered.

For the above technical solution, when the temperature in the thermal insulation tank 21 reaches the first preset temperature in the step s104, the instant heating device 222 and the water pumping device 221 are sequentially controlled in a time-sharing manner to stop working, and when the technical solution of calibrating the heating power, the water pumping flow rate, the heating time and the water pumping time according to the water outlet temperature and the water amount in the thermal insulation tank 21 is adopted, the water pumping power and the heating power under the stable rated voltage are calculated. However, in the working process of the instant water dispenser, the actual voltage and the rated voltage brought by voltage fluctuation of an urban power grid and the like are different; it can be understood that the voltage is not consistent with the actual voltage, and the working efficiency of the components is directly influenced; for the reasons, the constant temperature regulation mode needs to be entered under the condition that the actual voltage is different from the rated voltage; as an alternative embodiment, the constant temperature control mode may include: recalibrating the corresponding relation between the outlet water temperature and the water quantity in the heat preservation tank 21, the heating power and the pumping flow; specifically, the temperature condition is checked, when the water temperature raising rate is too fast, the fact that the mains voltage is larger than the calibration voltage is represented, the water pump power corresponding to the temperature at the moment is obtained, the water pump power corresponding to the temperature under the normal calibration is subtracted to obtain a power difference value, and the power difference value is used as a gradient standard for increasing the water pumping power of the water pump under the current mains voltage; when the water temperature is too slow in raising rate, the fact that mains voltage is smaller than the calibration voltage is represented, the water suction pump power corresponding to the temperature at the moment is obtained, the water suction pump power corresponding to the temperature under the normal calibration is subtracted to obtain a power difference value, and the power difference value is used as a gradient standard for reducing the water suction power of the water suction pump under the current mains voltage.

In order to facilitate understanding of the technical scheme of the application, the application also exemplarily provides a specific flow of the circulation preheating method and the control method of the instant water dispenser;

as an alternative embodiment, as shown in fig. 3, the instant water heater at least includes: the water inlet valve 32, the filter element 34, the instant heating body 222, the water pump 221, the heat preservation tank 21, the water outlet valve 30 and the waste water valve 35.

As an optional implementation manner, a specific process of the cyclic preheating method may include:

after the water supplement is completed, keeping the water outlet valve 232 closed, and controlling the water pump 221 and the instant heating body 222 to work, so that the water in the heat-preservation tank 21 circulates in the heat-preservation tank 21, the water outlet pipeline and the water supplement pipeline; when the temperature in the heat-preserving tank 21 is recognized to reach 50 ℃, the circulating preheating mode is skipped; when the temperature at the bottom of the heat-preserving tank 21 is lower than 50 ℃, a circulating preheating mode is started, the water pump 221 and the instant heating body 222 are controlled to work, and water in the heat-preserving tank 21 circulates in the heat-preserving tank 21, the water outlet pipeline and the water replenishing pipeline.

As an optional implementation manner, the specific process of the constant temperature control mode may include:

obtaining a calibration reference table of the outlet water temperature, the heating power of the instant heating body 222 and the pumping flow of the pumping pump 221, wherein specifically, the heating power, the pumping flow, the heating time and the pumping time can be calibrated according to the outlet water temperature and the water quantity in the heat preservation tank before leaving a factory so as to obtain the calibration reference table of the outlet water temperature, the water quantity in the heat preservation tank, the heating power, the pumping flow, the heating time and the pumping time; after obtaining the calibration reference table of the outlet water temperature, the heating power of the heating device and the pumping flow of the water pump 221, directly looking up a table to set the heating power of the hot body 222 and the pumping flow of the water pump 221; acquiring a temperature rise rate, and comparing the temperature rise rate with a preset temperature rise rate, wherein the preset temperature rise rate can be tested when the instant heating water dispenser leaves a factory, specifically, before the instant heating water dispenser leaves the factory, the temperature rise condition of the water dispenser under a preset voltage is measured, and a corresponding relation curve of the voltage and the temperature rise is determined based on the temperature rise conditions under a plurality of preset voltages;

when the temperature rise rate is larger than the preset temperature rise rate, acquiring the power of the water pump 221 corresponding to the temperature at the moment, and subtracting the power of the water pump 221 corresponding to the temperature under the normal calibration, so as to serve as a gradient standard for increasing the water pumping power of the water pump 221; wherein, as an alternative embodiment, increasing the pumping power of the water pump 221 may be implemented by adjusting the duty cycle of the water pump 221;

when the temperature rise rate is smaller than the preset temperature rise rate, the heating gear of the instant heating body 222 corresponding to the temperature at this time is obtained, and the heating gear is further increased, so that the temperature rise rate is increased to the preset temperature rise rate.

As an optional implementation manner, the temperature deviation between the outlet water temperature and the inlet water temperature of the instant heating body 222 is obtained, and when the temperature deviation between the outlet water temperature and the inlet water temperature of the instant heating body 222 is not in the interval of 20 ℃ -40 ℃, the inlet water temperature and the outlet water temperature detection device of the instant heating body 222 is confirmed, and an alarm signal is output.

In this embodiment, the control method of the hot water discharging device further includes a method for adjusting the preset power of the hot body and the water pump based on the voltage change. The specific method comprises the following steps: acquiring the water inlet temperature and the target water outlet temperature; determining a first calibration heating power of the instant heating body and a first calibration pumping power of a pumping pump device based on the water inlet temperature, the target water outlet temperature and the corresponding preset calibration result; water is discharged according to the first calibration heating power and the first calibration pumping power, and a water outlet temperature parameter in the water discharging process is obtained; adjusting the first calibration heating power and/or the first calibration pumping power based on the outlet water temperature parameter to obtain actual heating power and/or actual pumping power so as to enable the outlet water temperature parameter to approach a preset temperature parameter; the preset temperature parameter is determined based on the first calibration heating power and the first calibration pumping power.

Optionally, testing the heating power of the instant heating device and the pumping power of the pumping device corresponding to the instant heating water machine heated from a plurality of different preset temperatures to a plurality of different target water outlet temperatures before delivery from a factory, and storing the determined relationship between the heating power of the instant heating device and the pumping power of the pumping device corresponding to the plurality of different preset temperatures heated to the plurality of different target water outlet temperatures as a calibration result in a memory; optionally, the preset relationship may include a table determined based on the preset temperature, the heating power of the instant heating device corresponding to the target effluent temperature, and the pumping power of the pumping device, and the table is used as a preset calibration result; the method also can comprise a function relation determined based on the heating power of the instant heating device corresponding to the preset temperature and the target outlet water temperature and the pumping power of the pumping device, and taking the function relation as a preset calibration result; the heating power and the pumping power corresponding to each preset temperature-rise interval in the heating process can be determined based on the heating power of the instant heating device corresponding to the preset temperature and the target water outlet temperature and the pumping power of the pumping device, and the heating power and the pumping power corresponding to each preset temperature-rise interval in the heating process are determined by the heating power of the instant heating device corresponding to the preset temperature and the target water outlet temperature and the pumping power of the pumping device to serve as preset calibration results; the heating power and the pumping power corresponding to each preset time interval when each time value in the heating process is the preset time value can be determined based on the preset temperature, the heating power of the instant heating device corresponding to the target water outlet temperature and the pumping power of the pumping device; the heating power and the pumping power may be average heating power and average pumping power within a period of time, or may be instantaneous heating power and instantaneous pumping power obtained based on a time sequence, which is not specifically limited herein; when the instant water outlet machine is used for discharging water, the target water outlet temperature and the water inlet temperature of the instant water outlet machine are obtained, and the first calibrated heating power of the instant water device and the first calibrated pumping power of the pumping device are determined based on the water inlet temperature, the target water outlet temperature and the corresponding preset calibration result. The preset temperature rise interval can be 5-10 ℃, preferably 5 ℃, so that the whole target water outlet time can be subdivided and regionalized as much as possible, and the water outlet temperature possibly required by a user can be covered as much as possible. The regulation conditions of the heating power and the water pumping power are checked in a certain temperature rise interval, and the target water outlet temperature is subjected to compartmentalization and regionalization, so that each temperature section has the corresponding heating power and water pumping power, and the power regulation of the whole heating process is perfected.

When the temperature rising rate of the discharged water is larger than the preset temperature rising rate, increasing the water pumping power of the water pumping device to obtain the actual water pumping power; when the temperature rising rate of the effluent is smaller than the preset temperature rising rate, increasing the heating power of the instant heating device to obtain the actual heating power; the technical effect that the water outlet temperature parameter approaches to the preset temperature parameter is achieved.

As an alternative embodiment, the increasing the power of the water pumping device comprises: determining a temperature rising rate value of the discharged water; the adjustment gradient of the water pumping power of the water pumping device is increased. As an alternative embodiment, the step of increasing the adjustment gradient of the pumping power of the pumping device comprises: determining a second calibrated pumping power of the pumping device corresponding to the current water outlet temperature rise rate value according to the preset calibration result based on the water outlet temperature rise rate value; and taking the difference value of the second calibrated pumping power and the first calibrated pumping power as the adjustment gradient of the pumping power of the pumping device, and adjusting the pumping power of the pumping device at least once.

For the technical scheme, when the temperature rising rate of the outlet water is greater than the preset temperature rising rate, the temperature rising rate value of the outlet water is determined. After the outlet water temperature-rising rate value is determined, as an optional embodiment, the outlet water temperature-rising rate value may be substituted into a plurality of calibration results of the calibration pumping powers of the instant heating device generated by the inlet water temperature and the target outlet water temperature to determine a second calibration pumping power corresponding to the current outlet water temperature-rising rate value, and it can be understood that the second calibration pumping power is smaller than the first calibration pumping power; in order to enable the outlet water temperature parameter to approach a preset temperature parameter, the difference value between the second calibration pumping power and the first calibration pumping power is used as an adjustment gradient for increasing the pumping power of the pumping device to adjust the pumping power of the pumping device at least once, so that the outlet water temperature rise rate approaches a preset temperature rise rate.

And when the temperature rising rate of the discharged water is greater than the preset temperature rising rate, checking the water pumping power of the water pumping device corresponding to the temperature rising rate of the discharged water, and setting the water pumping power as a second calibrated water pumping power. It can be understood that the preset calibration result may be a table established in the corresponding relationship between the water outlet temperature rise rate and the water pumping power, and the heating power, or may be a table established in the corresponding relationship between the water outlet temperature and the water pumping power, and the heating power. In this embodiment, the preset calibration result is a table related to the corresponding relationship between the outlet water temperature and the pumping power and the heating power.

Specifically, firstly, determining the pumping power and the heating power corresponding to the pumping device and the instant heating device according to the target water outlet temperature, wherein the pumping power is taken as a first calibrated pumping power, when the first calibrated pumping power acts on the pumping device, then after a certain time, the actual water outlet temperature is found to be higher than the target water outlet temperature, searching the pumping power corresponding to the actual water outlet temperature in a preset calibration result, positioning the pumping power at a second calibrated pumping power, and considering that the pumping power is increased, wherein the increased adjustment gradient is the difference value between the second calibrated pumping power and the first calibrated pumping power. It can be understood that the high outlet water temperature corresponds to the low pumping power, so that the actual outlet water temperature is higher than the target outlet water temperature, and the second calibrated pumping power corresponding to the preset calibration result should be smaller than the first calibrated pumping power, so that the difference between the two is taken as the adjustment gradient and the pumping power of the pumping device is increased. Therefore, the actual outlet water temperature is adjusted reversely according to the fact that the outlet water temperature is too high, and the pumping power needs to be increased when the temperature is higher. By the technical scheme, the technical effect that the water outlet temperature parameter approaches to the preset temperature parameter is achieved.

As an alternative embodiment, increasing the heating power of the instant heating device comprises: determining a current heating gear based on the first heating power; and the heating gear is lifted at least once according to the current heating gear.

For the technical scheme, the final outlet water temperature may be lower than the target outlet water temperature set by the user; therefore, when the temperature rising rate of the effluent is greater than the preset temperature rising rate, the heating gear of the instant heating device corresponding to the current first heating power is determined. After the heating gear of the instant heating device corresponding to the current first heating power is determined, the current heating gear is at least lifted once to increase the heating power of the instant heating device, so that the instant heating device supplies more heat to water under the current water outlet power, and further the water outlet temperature rising rate is increased, so that the water outlet temperature rising rate approaches to the preset temperature rising rate. Through the technical scheme, the technical effect that the water outlet temperature parameter approaches to the preset temperature parameter is achieved.

In this embodiment, a water amount calculating method of the hot water storage device is further included. As an optional embodiment, the working power of the water pump determines the amount of water pumped, that is, the working power of the heat body determines the heating temperature, and the working powers of the water pump and the heat body can be matched according to the required water intake temperature, where different working powers are applied to the water pump and the heat body respectively for different water intake temperatures, and the applied working power is the preset power w. It is understood that the preset power w of the water pump, i.e. the hot body, includes the preset power of the water pump and the preset power of the hot body, and the preset power may include applied voltage, current, etc. that affect the operating parameters of the water pump, i.e. the hot body.

Determining the preset power w of the water suction pump and the instant heating body according to the water taking temperature T1, applying the preset power w to the instant heating body and the water suction pump, and giving a certain early-stage reaction time to the water suction pump and the instant heating body, wherein the early-stage reaction time ensures that the water suction pump and the instant heating body can normally work at the preset power w, is the first preset time T3, and can be 3-8s, preferably 5 s. After the first preset time, namely the outlet water temperature of the hot body tends to be stable, the actual temperature T2 is checked, if the actual temperature is not equal to the pre-set water taking temperature T1 in the early period, the preset power applied to the hot body and the water suction pump needs to be adjusted, and the actual temperature of the outlet water of the hot body is checked after the adjustment.

When the hot water outlet device is used for discharging water, timing is started, although the actual temperature of the hot water outlet does not reach the water taking temperature, the process of discharging water from the hot water storage device is also used in the process of continuously adjusting the hot body and the water suction pump, so that the water yield in the process of adjusting the power of the hot body and the water suction pump needs to be calculated for accurately calculating the water yield, and timing is started when the hot water outlet device is used for discharging water. It can be understood that the working power of the water pump is different at different water outlet temperatures, and the water outlet rate of the hot water outlet device is different when the working power of the water pump is different, and the hot water outlet device starts to time, so that the time of the water pump working at different working powers at different water outlet temperatures needs to be recorded, and the subsequent calculation of the water outlet amount is facilitated.

When the body is heated, the water is dischargedWhen the actual temperature T2 is equal to the intake temperature T1, the current adjustment time of the water pump is recorded as T1. The adjusting time is the time when the actual water outlet temperature is not equal to the water taking temperature, and although the water outlet temperature of the hot body is not equal to the water taking temperature in the adjusting time, water in the time also flows out of the hot water outlet device. Because the water is pumped out from the hot water storage device by the water pump, then is sent into the instant heating body to be heated and then directly flows out through the water outlet of the instant heating body, and the temperature measurement can be carried out at the water outlet of the instant heating body, the water pump, the instant heating body also carries out the adjustment of the working power in the process of adjusting the actual water outlet temperature, and the water volume recording is also required in the process. When the hot water outlet device starts to discharge water, the fact that the hot water storage device also starts to discharge water is marked, the water discharge amount of the hot water storage device can be regarded as the water pumping amount of the water pumping pump, at this time, the working time of the water pumping pump under different working powers needs to be recorded before the actual water outlet temperature is not equal to the preset temperature, the adjusting time t1 includes the working time of the water pumping pump before the actual water outlet temperature is equal to the preset temperature, and the total water pumping amount of the water pumping pump is Q1 within the adjusting time t 1. The Q1 is obtained by multiplying the pumping time by the pumping flow rate of the pump under different pumping powers. When the actual temperature T2' is equal to the water taking temperature T1, the working time T2 of the water pump is recorded again, and the water pumping quantity Q2 is obtained by multiplying the water pumping speed by T2. In this case, the water pumping amount Q at the single intake temperature T1 is Q1+ Q2 and is the sum of the adjustment flow rate during the adjustment of the actual temperature and the discharge flow rate when the intake temperature is maintained. Accumulated water pumping amount sigma Q ═ Q + Q' + … … + Q at multiple water taking temperature T1 ⁿ (ii) a And when the water pumping quantity sigma Q of the water pump reaches the preset water quantity Q, the hot water storage device starts to replenish water.

The embodiment of the application discloses a water quantity calculation method for respectively executing a water taking method at a single water taking temperature according to presets required by water suction pumps, namely a heating body at different water taking temperatures, wherein the method comprises the step of correcting the water quantity before the required temperature is reached. The water getting program comprises: firstly, the preset work of a water pump, namely a heating body is determined according to the set water taking temperatureAnd the water pump and the instant heating body are set to work at preset power, the actual temperature of the discharged water is checked after a certain preset time, the working power of the water pump and the instant heating body is continuously adjusted according to the difference between the actual temperature and the preset temperature, and the temperature is detected again until the actual temperature is equal to the preset temperature. Calculating the water yield in the water intake temperature regulation process, and determining the water yield in the regulation process before the actual temperature reaches the preset temperature as Q ₁ The water yield after reaching the actual temperature is defined as Q ₂ And the single water intake amount comprises the sum of the water output when the temperature does not reach the preset temperature and the water output when the temperature reaches the preset temperature, and when the single water intake amount reaches a certain water amount, the water supplementing program of the hot water storage device is started. The method that this application was adopted need not set up water yield detection device or electric elements such as flowmeter, only need to actual water yield calculate can, avoid appearing because the water yield false retrieval that water metering electric element is malfunctioning and lead to. And the water quantity correction of the actual water outlet quantity is added, so that the water quantity leakage meter for only obtaining the water quantity when the outlet water temperature reaches the required temperature is prevented. Normally, to the demand of different water intaking temperatures, hot water outlet device all can possess real-time temperature regulation function, the condition that early leaving water temperature did not reach preset temperature in earlier stage can appear at temperature regulation's in-process, so in the actual play water of calculating hot water storage device, need consider that earlier stage temperature does not reach the regulation flow when, add the single play water flow of temperature when reaching on the basis of regulation flow and decide as actual single, further accurate hot water storage device's play water flow.

The method for adjusting the working power of the water pump, namely the hot body, according to the actual temperature and detecting the actual temperature T2' again comprises the steps of checking the actual temperature of the hot body outlet water, comparing the actual temperature with the water taking temperature and determining the temperature deviation delta T3; and acquiring preset power w1 under the temperature deviation delta T3 on the preset power w of the water taking temperature, adjusting the preset power w1 to the preset power w by combining the temperature deviation delta T3, taking the adjusted power as working power w ', and adopting working parameters of a water suction pump and an instant heating body under the working power w' to achieve the water temperature of the water taking temperature. The actual temperature obtained according to the preset power of the water suction pump and the instant heating body is not the preset water taking temperature, so that the working power of the water suction pump and the instant heating body is required to be adjusted, the obtained actual temperature is checked at the moment, the temperature difference between the actual temperature and the preset water taking temperature is determined, and the corresponding adjusting power of the instant heating body and the water suction pump is determined according to the temperature difference. Here, in this embodiment, the power adjustment gradient of the thermal body and the water pump is determined according to the temperature difference, and only the determined adjustment gradient needs to be superimposed on the preset power, or the adjustment gradient is reduced on the preset power, so that the overall adjustment, that is, the working power of the thermal body and the water pump, is avoided. It is understood that the adjustment for both may be performed either individually or simultaneously. When the single adjustment is selected, the working power of the instant heating body can be controlled to be unchanged, the working power of the water suction pump is adjusted, if the temperature is higher, the working power of the water suction pump is increased, and if the temperature is lower, the working power of the water suction pump is reduced.

As an exemplary embodiment, the method for adjusting the preset power w1 to the preset power w according to the preset power w1 at the temperature deviation Δ T in combination with the temperature deviation Δ T and using the adjusted power as the working power w' includes increasing the working power of the water pump and/or decreasing the working power of the instant heating body when Δ T-T2-T1 > 0; when the delta T is T2-T1 and is less than 0, the working power of the hot body is increased, and/or the working power of the water suction pump is reduced; when the delta T is T2-T1 is 0, the power supply works with the preset power w of the water temperature T1. And when the working power of the instant heating body is the maximum value, and the working power increase value of the instant heating body does not meet the gradient of the temperature deviation delta T, reducing the working power of the water suction pump.

As an exemplary embodiment, the maximum water output Q of the hot water storage device is determined _max The water pumping quantity Q reaches the maximum water yield Q under the single water taking temperature T1 _max When it is time to suspend executionIn the water intake program at the single water intake temperature T1, the hot water storage device starts replenishing water. When the sigma Q reaches the first preset water quantity Q, the water getting program under the single water getting temperature T1 is not completed, and after the water getting program under the single water getting temperature T1 is executed, the hot water storage device starts to replenish water. The preset water quantity Q is the maximum water yield Q _max 10-90 percent of the total amount of the waste water, and the maximum water yield Qmax is 1.5-5L.

In this embodiment, the hot water outlet device includes two water replenishing modes, a half-tank water replenishing mode and a forced water replenishing mode. The semi-tank water replenishing mode comprises the step of performing the water replenishing mode if the hot water outlet device does not discharge water when the water amount in the hot water storage device reaches 50% of the total capacity of the water storage device, and the step of performing the water replenishing mode after the water discharging is finished if the hot water outlet device discharges water. It is understood that the present application provides a predetermined water amount Q, where the predetermined water amount Q may be 10% -90% of the total capacity of the water storage device, i.e. the maximum water output Q _max 10% -90%, in this example the preset water yield q is 50%. The forced water supplementing mode comprises that a lowest water level detection is arranged in the hot water storage device, when water in the hot water storage device is at the lowest water level, the hot water storage device is acquiescent to have no water, and at the moment, no matter whether the hot water outlet device is discharging water or not, forced water supplementing is carried out on the hot water storage device. When the single water intake exceeds the maximum water yield Q _max And the hot water outlet device does not discharge water any more, and the hot water storage device directly enters a water supplementing mode. In this embodiment, although the hot water storage device has no heating function, the water in the hot water storage device is drawn into the instant heating body, and in order to prevent the instant heating body from being burnt, it is necessary to ensure that a certain amount of water is always kept in the hot water storage device. When the single water outlet exceeds the maximum water outlet Q _max In order to ensure the quantity of the hot water storage tanks, water outlet is required to be interrupted, and a water supplementing mode is started.

As an exemplary embodiment, the method for obtaining the pumping water amount Q at the single water intake temperature T1-Q1 + Q2 includes calculating the pumping water amount Q1 at the working power of the pumping pump at the preset power w and the first preset time T1; and calculating the water pumping quantity Q2 according to the working power of the water pump at the working power w' and the first preset time t 2. After the hot water storage device is replenished with water, the water in the hot water storage device is kept at the heat preservation temperature T0, and the preset power w required by the water suction pump and the instant heating body at different water taking temperatures is determined according to the heat preservation temperature T0. It can be understood that the working power of the water pump is related to the pumping rate, so that the working power of the water pump is different at different water taking temperatures, and the corresponding pumping rate is different, and the method for obtaining the pumping rate corresponding to different working powers can be to find the water amount within a certain time, and then the pumping rate can be obtained by removing the water amount according to the water amount to be pumped and the time.

In this embodiment, the control method of the hot water outlet device further includes a preset power matching method for the water pump and the instant heating body aiming at different water taking temperatures. In this embodiment, different temperatures respectively correspond to different water pumps and the operating power of the instant heating body, so the water pumps and the instant heating body respectively set multiple power gears, and different water taking temperatures are controlled and output by adjusting the power gears of the water pumps and the instant heating body. In the embodiment, a hot water storage device is further arranged, the water in the hot water storage device has a heat preservation temperature T0, and after the water taking temperature T1 is determined, the working power of the water suction pump and the instant heating body is respectively adjusted according to the heat preservation temperature T0 of the hot water storage device. Specifically, the instant heating body and the water suction pump are arranged in a power grading mode, the highest power of the instant heating body is matched with the lowest power of the water suction pump to check the obtained water outlet temperature, the TG is determined, the TG is the highest temperature which can be reached by a hot water outlet device, the lowest power of the instant heating body is matched with the highest power of the water suction pump to check the obtained water outlet temperature, the TD is determined, the TD is the lowest temperature which can be reached by the hot water outlet device, and a temperature adjustable interval (TD, TG) is established, so that if the required water taking temperature is located in the temperature adjustable interval (TD, TG), the required water taking temperature can be achieved by adjusting the instant heating body and the water suction pump.

As an exemplary embodiment, the step of obtaining the working power of the water pump and the working power of the instant heating body according to the water intake temperature T1 includes executing a full-flow water outlet program when the water intake temperature T1 is less than or equal to the heat preservation temperature T0; when the water taking temperature T1 is higher than the heat preservation temperature T0, executing a speed-control water outlet program; in the full-outflow procedure, the water pump works at the maximum power Pmax of the water pump, namely the heat body is closed; in the speed-control water outlet program, the working power of the water pump and the instant heating body is adjusted in gear. In this embodiment, the water intake temperature and the heat preservation temperature are compared, if the water intake temperature is less than or equal to the heat preservation temperature in the hot water storage device, the temperature in the hot water storage device is too high, and at this time, the full-flow water outlet program is executed, so that the water pumping amount of the water pump can be increased, the temperature is reduced, and the instant heating body is closed. If the water taking temperature is higher than the heat preservation temperature, the temperature in the hot water storage device is lower, the instant heating body needs to be started for circular heating, the working power of the instant heating body is increased independently, the water taking temperature cannot be guaranteed, and therefore the water taking temperature needs to be adjusted together according to the water suction pump.

As an exemplary embodiment, in the full outflow procedure, the actual outflow water temperature T2 ' is detected, the temperature difference Δ T2 between the actual outflow water temperature T2 ' and the water intake temperature T1 is determined, whether the temperature difference Δ T2 is greater than a second preset temperature difference threshold is determined, and when the temperature difference Δ T2 is greater than the second preset temperature difference threshold, the hot body is selected to be turned on according to the actual outflow water temperature T2 '.

As an exemplary embodiment, when the temperature difference Δ T2 is greater than a second preset temperature difference threshold, the instant heating body is selectively turned on according to the actual outlet water temperature T2 ', including that when the actual outlet water temperature T2' is less than the outlet water temperature T1, the instant heating body is turned on to operate, and the water source in the pipeline is heated and heated; and when the actual outlet water temperature T2 'is higher than the water taking temperature T1, alarming the actual outlet water temperature T2'.

As an exemplary embodiment, when the temperature difference Δ T2 is greater than the second preset temperature difference threshold, the actual leaving water temperature T2' is alarmed.

When the heat preservation temperature T0 is obtained, the temperature of the water intake temperature and the heat preservation temperature are preliminarily processed, and then whether the water suction pump is independently adjusted or the hot body and the water suction pump are correspondingly and simultaneously adjusted is determined. When the water intake temperature is less than the heat preservation temperature, the full outflow water is executed, the water suction pump works at full power, the actual water outlet temperature is detected again at the moment, the temperature difference value between the actual water outlet temperature and the water intake temperature is checked, if the temperature difference value is overlarge, on the basis of the full-power work of the water suction pump, the actual water outlet temperature is still greater than the water intake temperature, the actual temperature cannot be reduced when the power of the water suction pump is adjusted to the maximum, and at the moment, the machine alarm is carried out. Here, if it is determined that the machine is out of order, the cause of the failure needs to be checked. If the temperature difference is too large, on the basis of the full-power operation of the water suction pump, the actual water outlet temperature is lower than the water taking temperature, the heating power of the instant heating body is considered to be insufficient due to the full-power operation of the water suction pump, and therefore the heating power of the instant heating body needs to be improved.

As an exemplary embodiment, in the speed-controlled water outlet program, the method for adjusting the operating power of the water pump and the instant heating body in the gear comprises the steps of executing the water taking temperature T1, comparing the operating power of the water pump and the operating power of the instant heating body with the water taking temperature T1 according to the detected actual water outlet temperature T2, and reducing the operating power of the instant heating body in the gear when the actual water outlet temperature T2 is greater than the water taking temperature T1; when the actual water outlet temperature T2 is less than the water inlet temperature T1, the working power of the instant heating body is increased, and/or the working power of the water suction pump is decreased.

As an exemplary embodiment, when the actual outlet water temperature T2 is less than the water intake temperature T1, the operating power of the instant heating element is preferentially increased by a gear, and when the instant heating element is increased to the maximum power Wmax, the operating power of the water pump is reduced by a gear by detecting that the actual outlet water temperature T2 is still less than the water intake temperature T1.

In this embodiment, if the water intake temperature T1 is higher than the insulation temperature in the hot water storage tank, the speed-controlled water outlet procedure is required to be performed, and the instant heating body and the water pump are adjusted. Firstly, determining the working power of a water suction pump and an instant heating body according to the water taking temperature T1, respectively working the water suction pump and the instant heating body with the working power, detecting the actual water outlet temperature after a certain time, comparing the actual water outlet temperature with the water taking temperature, and reducing the working power of the instant heating body according to the gears when the actual water outlet temperature is greater than the water taking temperature set in the early stage. In the above, the different temperatures correspond to different working powers of the instant heating body and the water pump, and when the actual water outlet temperature exceeds the water taking temperature, the heating power of the instant heating body is considered to be too high, and the working power of the instant heating body needs to be reduced according to a unit. If the actual water outlet temperature is lower than the water taking temperature, the heating power of the instant heating body is considered to be insufficient or the pumping power of the water pump is too high, and at the moment, the working power of the instant heating body or the working power of the water pump needs to be increased, or the working power of the instant heating body and the working power of the water pump need to be increased. Specifically, when the actual water outlet temperature is lower than the water taking temperature, the working power of the instant heating body is preferentially increased according to the gears, if the working power of the instant heating body reaches the maximum power, if the actual water outlet temperature is still lower than the water taking temperature, the water suction pump needs to be adjusted, and the working power of the water suction pump is reduced according to the gears. The water pumping power of the water pump is firstly ensured to be unchanged, the reason for adjusting the working power of the instant heating body is to ensure the water yield, the water yield is preferentially ensured on the basis of reaching the water taking temperature, and the instant heating body is adjusted on the basis of effectively ensuring the water yield.

As an exemplary embodiment, the method for performing the operation power of the water pump and the operation power of the thermal body at the water intake temperature T1 includes that at any water intake temperature T1, the water pump starts to operate at the maximum pump power Pmax, i.e., the thermal body starts to operate at the middle gear power.

In this embodiment, on the basis of the water intake temperature, firstly the water pump is acquiescent by default to pump water with the maximum power, the water yield is guaranteed to meet the requirement, then the working power of the instant heating body is adjusted to be a middle gear, and the actual temperature is checked after a certain time. Specifically, before the specific corresponding relationship between the specific temperature and the working power of the instantaneous heating body and the water pump is not obtained, the actual outlet water temperature condition is checked under the conditions that the working power of the water pump is maximum, the working power of the instantaneous heating body is medium and the like, and then the water pump and the instantaneous heating body are adjusted correspondingly according to the obtained actual temperature. The power gear of the water pump is divided into three gears of low, medium and high, namely the power gear of the heating body is divided into three gears of low, medium and high, then the power of the water pump at the high gear is matched with the power of the heating body at the low gear to obtain the lowest water outlet temperature Td, the power of the water pump at the low gear is matched with the power of the heating body at the high gear to obtain the highest water outlet temperature Tg, and then an adjustable water taking temperature interval [ Td, Tg ] is obtained, and if the water taking temperature is in the interval, the required water taking temperature can be obtained by correspondingly adjusting the heating body and the water pump.

As an exemplary embodiment, the method for performing the gear adjustment on the operating power of the water pump and the instant heating element according to the actual water outlet temperature T2 includes determining a temperature difference Δ T1 between the actual water outlet temperature T2 and the water taking temperature T1, and determining a gear adjustment mode of the operating power of the water pump and the instant heating element according to Δ T1. When the temperature difference delta T1 is within a first preset temperature difference threshold value, the working power of the water suction pump and the instant heating body is sequentially adjusted in a gear progressive mode; and when the temperature difference delta T1 is larger than a first preset temperature difference threshold value, the working power of the water suction pump and the instant heating body is adjusted in a gear jumping mode.

Specifically, the working powers of the instant heating body and the water pump are divided according to gears, for example, the water pumping power of the water pump is adjusted by adjusting a duty ratio, the water pumping amount is adjusted according to the duty ratio, that is, the rated power of the heating body is 2100w, and the water pump and the instant heating body are divided into 10 gears, namely a first gear: namely, the working power of the heating body is set to 210w, and the duty ratio of the water suction pump is set to 10%; a second gear: namely, the working power of the heating body is set to 420w, and the duty ratio of the water pump is set to 20%; a third gear: namely, the working power of the heating body is set to 630w, and the duty ratio of the water pump is set to 30%; fourth gear: namely the working power of the heating body is set to 840w, and the duty ratio of the water pump is set to 40%; fifth gear: namely the working power of the thermal body is set to 1050w, and the duty ratio of the water suction pump is set to 50%; sixth gear: namely the working power of the heating body is set to 1260w, and the duty ratio of the water pump is set to 60%; a seventh gear: namely the working power of the heating body is set to 1470w, and the duty ratio of the water suction pump is set to 70%; the eighth gear is that the working power of the heating body is set to 1680w, and the duty ratio of the water pump is set to 80%; ninth gear, namely the working power of the heating body is set to 1890w, and the duty ratio of the water suction pump is set to 90%; the tenth gear, namely the working power of the heating body is set to 2100w, and the duty ratio of the water pump is set to 100%. Then, a temperature change difference value between each gear is determined, where the temperature change difference value is a first preset temperature difference threshold value, and it can be understood that the first preset temperature difference threshold value is related to the gear division value, that is: namely, the temperature change difference value between each gear of the hot body and each gear of the water suction pump is determined as a first preset temperature difference threshold value. The specific first preset temperature difference threshold may be an average value of temperature difference values of the gears, and is not limited herein. And if the temperature difference delta T1 between the actual water outlet temperature T2 and the water intake temperature T1 is within the temperature change difference, the working power of the water suction pump and the instant heating body is selected to be adjusted in sequence according to the gears. If the temperature difference Δ T1 is greater than the set temperature change difference, a gear jump is required to adjust the working power of the water pump, i.e., the heating element.

Claims

1. The circulation preheating method of the instant heating water dispenser is characterized in that the instant heating water dispenser comprises a water inlet module, a heat preservation module and a water outlet module, the heat preservation module comprises a heat preservation tank, a water outlet pipeline and a water supplementing pipeline, the water supplementing pipeline is arranged between a water inlet of the heat preservation tank and the water inlet module, the water outlet pipeline is arranged between a water outlet of the heat preservation tank and the water outlet module, a water pumping device and an instant heating device which are sequentially connected are arranged on the water outlet pipeline, a water outlet of the instant heating device is communicated with the water supplementing pipeline, and the circulation preheating method comprises the following steps: a cyclic pre-heating mode is adopted,

the circulation preheating mode comprises the steps of obtaining the temperature of the bottom of the heat preservation tank and the temperature of the outlet water of the instant heating device,

when the temperature of the bottom of the heat-preserving tank is lower than a first preset temperature, the water pumping device and the instant heating device are controlled to work, so that the water in the heat-preserving tank circulates in the heat-preserving tank, the water outlet pipeline and the water supplementing pipeline,

and when the outlet water temperature of the instant heating device is higher than a second preset temperature, closing the instant heating device and the water pumping device in sequence in a time-sharing manner.

2. The circulation preheating method of the instant water dispenser according to claim 1, wherein the circulation preheating method comprises a first water replenishing mode, a water replenishing valve is arranged on the water replenishing pipeline,

and when the heat-preserving tank is in a full water state, the first water supplementing mode is completed, and the circulation preheating mode is entered.

3. The method for circularly preheating the instant-heating water dispenser according to claim 2, wherein an inlet and outlet pipeline is arranged between the water inlet module and the heat preservation module, and when the instant-heating water dispenser is in the first water replenishing mode, water enters the inlet and outlet pipeline from the water inlet module, enters the water replenishing pipeline from the inlet and outlet pipeline, and finally enters the heat preservation tank.

4. The method for circularly preheating the instant water dispenser according to claim 3, wherein the method for circularly preheating the instant water dispenser further comprises the step of closing the water replenishing solenoid valve when a user takes hot water, and pumping the water in the heat preservation tank into the inlet and outlet pipeline by the pumping device and then into the water outlet module by the inlet and outlet pipeline.

5. The method for circularly preheating an instant water dispenser according to claim 1, wherein when the inlet water temperature of the instant water dispenser is lower than the first preset temperature value, the step of controlling the water pumping device and the instant water dispenser to work so that the water in the thermal insulation tank circulates among the thermal insulation tank, the water outlet pipeline and the water replenishing pipeline comprises the following steps:

the water pumping device and the instant heating device are sequentially started, whether water exists in the instant heating device is detected, and when the instant heating device does not contain water, the instant heating device and the water pumping device are sequentially controlled to stop working;

alternatively, the first and second electrodes may be,

starting the water pumping device, and detecting whether water exists in the instant heating device;

and when water exists in the instant heating device, the instant heating device is started.

6. The circulation preheating method of the instant water dispenser as claimed in claim 1, wherein the circulation preheating method further comprises:

detecting the water inlet temperature of the instant heating device,

work as the holding tank bottom temperature does not reach first predetermined temperature, when the temperature of intaking of instant heating device reaches first predetermined temperature, opens pumping device, detects once more the holding tank bottom temperature, if the holding tank bottom temperature that detects once more has not reached first predetermined temperature, then opens the instant heating device.

7. The method for preheating the circulation of the instant water dispenser according to any one of claims 1 to 6, wherein the step of sequentially closing the water pumping device and the instant water device in time division when the temperature of the outlet water of the instant water dispenser is higher than a second preset temperature comprises the steps of:

and controlling the instant heating device to stop working, and controlling the water pumping device to stop working after keeping the water pumping device to continuously work for a first preset time.

8. The circulation preheating method of the instant water heater according to any one of claims 1 to 6, further comprising:

acquiring the water inlet temperature of the instant heating device and the water outlet temperature of the instant heating device;

calculating the temperature difference between the inlet water temperature and the outlet water temperature of the instant heating device;

judging whether the temperature difference is larger than a preset temperature difference or not;

when the temperature difference is greater than the preset temperature difference, the instant heating device is controlled to stop working, and after the water pumping device continuously works for a first preset time, the water pumping device is controlled to stop working, and an alarm signal is output.

9. The method for circularly preheating the instant water heater according to claim 7, wherein the preset temperature difference is 20 ℃ to 40 ℃.

10. A control method of an instant heating water outlet machine is characterized by comprising the following steps:

the method for preheating the circulation of an instant water heater according to any one of claims 1 to 9,

and when a water outlet instruction is obtained, entering a constant temperature regulation mode.