CN112263200A - Power adjusting method, device and system based on inlet water temperature - Google Patents
Power adjusting method, device and system based on inlet water temperature Download PDFInfo
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- CN112263200A CN112263200A CN202011140849.0A CN202011140849A CN112263200A CN 112263200 A CN112263200 A CN 112263200A CN 202011140849 A CN202011140849 A CN 202011140849A CN 112263200 A CN112263200 A CN 112263200A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4285—Water-heater arrangements
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4287—Temperature measuring or regulating arrangements
Abstract
The invention discloses a power adjusting method, device and system based on inlet water temperature, and belongs to the technical field of power adjustment. The method comprises the following steps: acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature; according to the temperature difference, determining a first heating power value required for heating single water inflow of the dishwasher from the water inflow temperature to the set rinsing temperature within the preset main washing time; and determining a second heating power value of the heating module according to the first heating power value, and determining an operating mode of the heating module. The invention calculates the temperature difference between the inlet water temperature and the set rinsing temperature dynamically, and calculates the required heating power value reversely by combining the set time of the main washing; the working gear of the heating module can be adjusted through the determined second power value so as to achieve the purpose of heating to the set temperature within the specified time.
Description
Technical Field
The invention relates to the technical field of power regulation, in particular to a power regulation method, device and system based on inlet water temperature.
Background
At present, commercial dish washing machines are installed and used in places such as chain restaurants, commercial kitchens and the like, and a plurality of low-power machine types with heat recovery are also emerging. Because the low-power machine type reduces the power of the rinsing heating pipe, under the condition that the dish-washing machine continuously washes, the temperature of water in the rinsing water tank is reduced after tap water enters the machine, and the rinsing heating pipe needs to be continuously heated to enable the rinsing temperature to rise to the set temperature. However, when water is continuously supplied and the temperature of tap water is relatively low in winter, the rinsing water temperature cannot be heated to the set water temperature within a set time, so that the cleaning effect is poor.
The existing scheme is to replace a rinsing heating pipe with larger power or increase the main washing time to ensure that the heating pipe is heated to the set temperature within the set time. If the heating pipe is replaced to increase the power value, the maximum power of the whole equipment is increased, and meanwhile, the whole power distribution capacity and the line current pressure of the dish washing room are increased, so that the line is heated and aged. If the rinsing heating pipe is ensured to have enough heating time by increasing the main washing time so as to enable the rinsing water temperature to rise to the set temperature and then rinse, the washing efficiency is reduced, the washing time is increased, and the use of a merchant is influenced.
In view of the above-mentioned problem that the commercial dishwasher in the prior art cannot be heated to a set temperature within a prescribed time, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the technical problems in the aspect of power regulation, the invention provides a power regulation method, a device and a system based on inlet water temperature, which can dynamically regulate power, and can regulate and control the actual power of a heating pipe in real time by dynamically regulating the heating power of the heating pipe by coordinating the heating time and the temperature to be heated, improve the washing efficiency and simultaneously protect the module system of a dish washing machine to the maximum extent.
In a first aspect, the present embodiment provides a power adjustment method based on an inlet water temperature, including the following steps:
acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature;
according to the temperature difference, determining a first heating power value required for heating single-time water inlet of the dishwasher from the water inlet temperature to the set rinsing temperature within preset main washing time;
and determining a second heating power value of the heating module according to the first heating power value, and determining the working mode of the heating module.
In this embodiment, the determining a first heating power value required for heating the single water inlet of the dishwasher from the water inlet temperature to the set rinsing temperature within a preset main washing time according to the temperature difference includes:
calculating the first heating power value according to the temperature difference, wherein the calculation formula is as follows:
wherein, PminRepresents the first heating power value, C represents the specific heat capacity of water, M represents the single water inflow of water, t1Represents a preset main washing time, and δ T represents a temperature difference between the feed water temperature and a set rinsing temperature.
In this embodiment, the determining the second heating power value of the heating module according to the first heating power value includes:
and determining a selected working gear from the plurality of working gears, wherein the second heating power value corresponding to the selected working gear is closest to the first heating power value and is greater than or equal to the first heating power value.
In this embodiment, the heating module includes a plurality of heating elements, each of the operating ranges includes setting of on and off states of the plurality of heating elements, and the determining the operating mode of the heating module includes:
and determining the on and off states of the plurality of heating elements according to the selected working position.
In this embodiment, the multiple heating elements are arranged to be combined in 8421 coding to obtain different power levels.
In a second aspect, the present embodiment further provides a power regulating apparatus based on the temperature of the incoming water, including:
the first calculation module is used for acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature;
the second calculation module is used for determining a first heating power value required for heating single-time water inlet of the dishwasher from the water inlet temperature to the set rinsing temperature within preset main washing time according to the temperature difference;
and the determining module is used for determining a second heating power value of the heating module according to the first heating power value and determining the working mode of the heating module.
In this embodiment, the second calculating module includes a third calculating module, configured to calculate the first heating power value according to the temperature difference, where the calculation formula is:
wherein, PminRepresents the first heating power value, C represents the specific heat capacity of water, M represents the single water inflow of water, t1Represents a preset main washing time, and δ T represents a temperature difference between the feed water temperature and a set rinsing temperature.
In a third aspect, this embodiment further provides a power conditioning system based on the temperature of the incoming water, where the power conditioning system includes:
the temperature sensing module is used for detecting the water inlet temperature of the dish washing machine;
the power regulating device based on the inlet water temperature is connected with the temperature sensing module and acquires the inlet water temperature of the dish washing machine from the temperature sensing module;
and the heating module is connected with the power regulating device based on the inlet water temperature and works according to the working mode determined by the power regulating device based on the inlet water temperature.
In this embodiment, the heating module further includes a similar three-phase contactor structure, where the similar three-phase contactor structure includes three lines, and the heating module includes a plurality of heating pipes, and each heating pipe is connected to one of the three lines.
In this embodiment, still include with the heating pipe quantity the same relay, every the one end of relay all with based on into water temperature's power adjusting device is connected, the other end is connected 1 respectively the heating pipe.
The invention provides a power adjusting method, a device and a module based on inlet water temperature, which can be applied to the aspect of inlet water heating of a dish-washing machine, and compared with the prior art, the invention has the advantages and positive effects that:
1. the invention calculates the temperature difference between the inlet water temperature and the set rinsing temperature dynamically, and calculates the required heating power value reversely by combining the set main washing time.
2. The working gear of the heating module can be adjusted through the determined second power value so as to realize the problem of heating to the set temperature within the specified time.
Drawings
Fig. 1 is a first flowchart of a power regulation method based on inlet water temperature in this embodiment;
fig. 2 is a schematic structural diagram of a power conditioning apparatus based on the temperature of the inlet water in the embodiment;
fig. 3 is a schematic structural diagram of a power conditioning system based on the temperature of the inlet water in the embodiment;
fig. 4 is a second flowchart of the power regulation method based on the temperature of the inlet water in the embodiment;
fig. 5 is a schematic diagram of a hardware structure of the power conditioning system based on the temperature of the inlet water according to the present embodiment.
In the above figures:
1. a first calculation module; 2. a second calculation module; 3. a determination module; 4. a temperature sensing module;
5. a heating module; 6. a third calculation module; 7. a first determination module;
8. a second determination module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The various techniques described in this application can be used for inlet water heating of dishwashers, for example, a rinse heating pipe is a heating element, typically a single heating pipe of fixed power, for heating tap water in a rinse tank of a dishwasher to a set desired temperature value.
The working process sequence of the dish washing machine is a main washing process, a draining process and a rinsing process, wherein the main washing process realizes that circulating water in a main washing water tank washes tableware in a high-strength and large-flow manner for cleaning, the draining process is a process of enabling main washing water on the surface of the tableware to flow freely after the main washing is finished, the draining time is a gap time of enabling the main washing water on the surface of the tableware to flow freely after the main washing is finished, and then the tableware enters the rinsing process, and tap water heated to high temperature (about 80-90 ℃) is used for carrying out spray rinsing on the surface of the tableware.
A relay is a device that controls the closing and opening of a switch by switching on and off using an electromagnetic effect. The electromagnetic coil is also electrified, and the iron core in the center of the coil moves under the action of the magnetic field generated by the coil. The switch contact inside the relay is driven to be switched on from off, and after the electrification disappears, the contact is switched off again under the action of the internal reset spring.
A three-phase contactor is an electromagnetic switch for switching a three-phase power supply on and off simultaneously. The working principle is the same as that of the relay. Usually three pairs of main contacts capable of passing a relatively large current and a pair of auxiliary contacts. The main contact is used for connecting and disconnecting high-voltage heavy current, and the auxiliary contact is used for connecting and short and small current to perform on-off signal feedback.
As shown in fig. 1, the present invention provides a power adjusting method based on inlet water temperature, which is applied to heating and adjusting water temperature of a dishwasher, and can dynamically adjust heating power according to inlet water temperature, and specifically comprises the following steps:
acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature;
according to the temperature difference, determining a first heating power value required for heating single water inflow of the dishwasher from the water inflow temperature to the set rinsing temperature within the preset main washing time;
on the basis of the first heating power value, a second heating power value of the heating module 5 is determined, and the operating mode of the heating module 5 is determined.
In some embodiments, determining a first heating power value required for heating a single water inlet of the dishwasher from a water inlet temperature to a set rinsing temperature within a preset main washing time according to the temperature difference comprises:
and calculating a first heating power value according to the temperature difference, wherein the calculation formula is as follows:
wherein, PminRepresents the first heating power value, C represents the specific heat capacity of water, M represents the single water inflow of water, t1Indicating a preset main washing time, and δ T indicating a temperature difference between the inflow water temperature and the set rinsing temperature.
In some embodiments, the heating module 5 comprises a plurality of operating steps, each operating step corresponding to a different power value, and determining the second heating power value of the heating module 5 from the first heating power value comprises:
and determining a selected working position from a plurality of working positions, wherein the second heating power value corresponding to the selected working position is closest to the first heating power value and is larger than or equal to the first heating power value.
In some embodiments, the heating module 5 comprises a plurality of heating elements, each operating range comprising settings for the on and off states of the plurality of heating elements, determining the operating mode of the heating module 5 comprising:
the on and off states of the plurality of heating elements are determined in accordance with the selected operating range.
In some embodiments, multiple heating elements are arranged to be combined using 8421 codes to obtain different power levels.
In a specific application, the second heating power value is rounded upwards to be equal to the nearest power working gear, the working states of the heating pipes are adjusted according to a set 8421 coding mode, and the multilevel adjustment of the rinsing power is realized through the 8421 coding mode.
In specific application, the heating member is set to be a plurality of heating pipes, different working positions of the heating module 5 are determined by setting working states of the plurality of heating pipes, and the heating module 5 outputs different working powers according to the different working positions.
Each heating pipe corresponds to different power values, and different working gears of the heating module 5 are determined according to different power values of the heating pipes, and the method comprises the following steps: the heating module 5 is adjusted to different basic power values by adjusting the power value of a single heating pipe, and different working gears of the heating module 5 are determined.
The actual heating power of the heating module 5 is adjusted to the gear value after calculation, the lowest power value of rinsing which can be realized under the conditions of meeting the temperature and time is realized, the loss caused by large current of a power circuit is reduced, and the problem that the temperature of rinsing water cannot be ensured in continuous washing under the limit conditions of low temperature of the inlet tap water in winter and the like is solved.
In a specific application, assuming n heating pipes, the power ratio between the heating pipes is 20：21：...:2nTo obtain 2n Power stage 1 to achieve continuous gear adjustment. Of course, the power ratio of the heating pipe can be adjusted according to actual needs to meet the requirements in different scenes.
In specific application, initialization is carried out under the condition that hardware can meet, the maximum power of the heating pipes is firstly adopted for heating, after the water temperature is tested, the required minimum power value is obtained according to the difference value of the water temperature and the set main washing heating temperature, the actual power value is determined according to the set gear value of the heating module 5, and finally the working states of the heating pipes are obtained.
In a specific application, the heating module 5 is adjusted to different base power values by adjusting the power value of a single heating tube.
Taking four heating pipes as an example, when the power value of the heating pipe with the minimum power is 1KW, 1KW gradient adjustment between 1KW and 15KW can be realized, and when the power value of the heating pipe is 2KW, 2KW gradient adjustment between 2KW and 30KW can be realized. By this way, different gear ranges and different gradient values can be obtained by adjusting the basic power value of a single heating pipe.
As shown in fig. 2, a power regulating device based on the temperature of the inlet water is also provided in this embodiment, and the device is used to implement the above embodiments and preferred embodiments, which have already been described and are not described again. As used hereinafter, the terms "module," "unit," "subunit," and the like may implement a combination of software and/or hardware for a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. The device includes:
the first calculation module 1 is used for acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature;
the second calculation module 2 is used for determining a first heating power value required for heating single water inflow of the dishwasher from the water inflow temperature to the set rinsing temperature within the preset main washing time according to the temperature difference;
and the determining module 3 is used for determining a second heating power value of the heating module 5 according to the first heating power value and determining the working mode of the heating module 5.
In this embodiment, the second calculating module includes a third calculating module 6, configured to calculate the first heating power value according to the temperature difference, where the calculation formula is:
wherein, PminRepresents the first heating power value, C represents the specific heat capacity of water, M represents the single water inflow of water, t1Indicating a preset main washing time, and δ T indicating a temperature difference between the inflow water temperature and the set rinsing temperature.
In an alternative embodiment, the heating module 5 comprises a plurality of operating steps, each operating step corresponding to a different power value, and the determining module 3 comprises a first determining module 7 configured to determine a selected operating step from the plurality of operating steps, wherein a second heating power value corresponding to the selected operating step is closest to the first heating power value and is greater than or equal to the first heating power value.
In an alternative embodiment, the heating module 5 comprises a plurality of heating elements, each operating range comprising settings for the on and off states of the plurality of heating elements, and the determination module 3 comprises a second determination module 8 for determining the on and off states of the plurality of heating elements in dependence on the selected operating range.
Alternatively, multiple heating elements may be arranged to be combined using 8421 codes to achieve different power levels.
As shown in fig. 3, the present invention further provides a power regulation system based on the temperature of the inlet water, for implementing the above power regulation method, including:
the temperature sensing module is used for detecting the water inlet temperature of the dish washing machine;
the power regulating device based on the inlet water temperature is connected with the temperature sensing module and acquires the inlet water temperature of the dish washing machine from the temperature sensing module;
and the heating module 5 is connected with the power regulating device based on the inlet water temperature and works according to the working mode determined by the power regulating device based on the inlet water temperature.
In a specific application, the heating module 5 is electrically connected to the first determining module 7, the first determining module 7 adjusts an operating range of the heating module 5 according to the second heating power value, the heating module 5 includes a plurality of heating members, each operating range includes setting of on and off states of the plurality of heating members, and an operating mode of the heating module 5 is determined, which includes:
and determining the opening and closing states of the heating pipes according to the selected working gear.
In specific application, the heating member is set as a heating pipe, each heating pipe corresponds to different power values, and different working gears of the heating module 5 are determined according to different power values of the heating pipe, including:
the heating module 5 is adjusted to different basic power values by adjusting the power value of a single heating pipe, and different working gears of the heating module 5 are determined.
In a specific application, the output end of the temperature sensing module 4 is connected with the first calculating module 1, and the output end of the determining module 3 is connected with the heating module 5.
In a specific application, the heating module 5 includes a plurality of heating pipes, different operating positions of the heating module 5 are determined by setting operating states of the plurality of heating pipes, and the heating module 5 outputs different operating powers according to the different operating positions. In practice, the heating module 5 may be a plurality of heating tubes with different heating powers, and the plurality of heating tubes are connected in parallel.
In some embodiments, the heating module 5 has n heating tubes, and the power ratio between the heating tubes is 20: 21：...:2nTo obtain 2nA power gear of 1 level, and a plurality of heating pipes jointly regulate heating power.
Daily heating pipe that uses is mostly exchange 220V's single-phase heating pipe, only one live wire is connected to the one end of heating pipe promptly, and the other end of heating pipe is connected to the zero line, and the voltage between live wire and the zero line is exchange 220V. The dish washer has high requirement on heating efficiency, so that the three-phase heating pipe is used, namely three independent heating pipes are arranged, and the three-phase heating pipe is formed through star-shaped or triangular connection. Three-phase power is respectively connected to three power supply wiring terminals of the heating pipe to form a three-phase heating pipe heating system.
The star connection is a three-phase connection method that one ends of three heating wires are connected together and the other ends are respectively connected with a power supply, and is called as star connection.
In a specific application, the temperature sensing module 4 includes an inlet water temperature sensor, and an output end of the inlet water temperature sensor is connected to the control module. The temperature of the inlet water is detected by the inlet water temperature sensor, and the temperature monitored in real time is returned to the control module.
In some alternative embodiments, the system further comprises a three-phase contactor-like structure comprising three lines, and the heating module 5 comprises a plurality of heating tubes, each heating tube being connected to one of the three lines.
In some optional embodiments, the system further comprises relays with the same number as the heating pipes, one end of each relay is connected with the power regulating device based on the temperature of the inlet water, and the other ends of the relays are respectively connected with 1 heating pipe.
In a specific application, the determining module 3 includes a plurality of relays, the relays are arranged in one-to-one correspondence with the heating pipes, and the output ends of the relays are correspondingly connected with the heating pipes. The relays and the heating pipes are in one-to-one correspondence, and the on-off control of the heating pipe can be realized.
As shown in fig. 5, in the present embodiment, the control module is embodied as a module board, the heating module 5 includes four heating pipes with increasing power, the four heating pipes are respectively connected to four relays, one end of each heating pipe with increasing power is electrically connected to one end of each relay in a one-to-one correspondence manner, the other end of each relay connected to two smaller heating pipes is electrically connected to the first line, and the other end of each of the other two heating pipes is respectively connected to the second line and the third line, so as to form a similar three-phase contactor structure. The on-off control of the four heating pipes is controlled by a relay contact arranged on the module plate.
The power value ratio of the heating pipes is 1:2:4:8 respectively. Assuming that the power of the minimum heating tube is RtKW, i.e. the power of the four heating tubes is 1 × RtKW, 2 × RtKW, 4 × RtKW, 8 × RtKW, respectively. The corresponding control relay switches are K1, K2, K3 and K4.
K1, K2, K3 and K4 jointly form a similar three-phase contactor structure, K1 and K2 are jointly connected to L1, K3 is connected to L2, K4 is connected to L3, and interaction among L1, L2 and L3 is avoided. The purpose of doing so is to connect two heating pipes with small power in parallel, can play the purpose of balanced power. Meanwhile, a similar three-phase contactor structure and a relay are combined, common adjustment can be achieved, adjustment of a single heating pipe can also be achieved, and power adjustment modes are flexible and diverse.
RtkW is the minimum power unit selectable by the heating tube. The change of the power switching range can be realized by adjusting the minimum power unit and adjusting different basic power values. If when RkW is 1KW, can realize the power adjustment scope of 1KW gradient between 1KW-15KW, when RkW is 2kW, can realize the power switching scope of 2KW gradient between 2kW to 15X 2 kW.
The embodiments of the present application are described and illustrated below by means of preferred embodiments.
The working state of the dishwasher comprises a starting state and an operating state, the dishwasher is started firstly, and in the starting stage, the maximum heating power can be selected according to the capacitance requirement of an actual installation store. Such as when RtkW is 1 kW. The rinsing heating power can be set to be 1kW-15 kW. In practical application, when the field installation power of a user is limited, the user can select smaller power to heat; maximum power can be used for heating when the installed capacity of the merchant is sufficient.
In the operation stage, as shown in the flowchart of fig. 4, the inlet water temperature sensor detects the water temperature of the inlet water tank in real time, i.e. the inlet water temperature of the dishwasher, and transmits the detected water temperature to the control module, and the control module pre-stores the set operation parameters of the dishwasher, including but not limited to the maximum rinsing temperature T1, the maximum main washing temperature T2, the set main washing pump operation time T1, the set intermediate draining time T2, the set rinsing pump operation time T3, and the single water inlet amount M of the rinsing water tank, extracts the set rinsing maximum temperature T1 therefrom, and calculates the difference δ T between the set rinsing maximum water temperature and the inlet water temperature to be T1-T0.
At this time, the set time T1 of the main washing pump work and the single water inflow M of the rinsing water tank are read, and the power value required for heating the single water inflow M with the temperature of T0 to T1 within the set time T1 of the main washing pump work is
Wherein C is the specific heat capacity of water of 4.2X 103J/(kg ℃), M is the water inlet quality of single tap water, delta T1 is the difference between the set rinsing temperature and the actual tap water temperature, and T1 is the set main washing time.
To ensure that the rinsing water temperature satisfies the set temperature after the main washing is finished, it is required to ensure that the rinsing temperature reaches the set temperature T1 within a time T1.
And after obtaining the Pmin, rounding the Pmin upwards to make the value equal to the power gear of the heating module 5, and when 4 heating pipes are arranged, even if the Pmin is equal to the nearest power gear Pminz in 1 × RtkW-15 RtkW.
And then according to Pminz, selecting the working combination state combination of k 1-k 4 according to the working state comparison table of the heating pipe and the relay switch shown in the table 1. Where 1 indicates on and 0 indicates off. For example, when K4K3K2K1 is 0011, K4 and K3 are opened, K2 and K1 are closed, and the corresponding heating pipes start to operate to heat the inlet water.
Table 1: working state comparison table of heating pipe and relay switch
| Serial number | Power of | |
| 1 | 1RtkW | 0001 |
| 2 | 2RtkW | 0010 |
| 3 | 3RtkW | 0011 |
| 4 | 4RtkW | 0100 |
| 5 | 5RtkW | 0101 |
| 6 | 6RtkW | 0110 |
| 7 | 7RtkW | 0111 |
| 8 | 8RtkW | 1000 |
| 9 | 9RtkW | 1001 |
| 10 | 10RtkW | 1010 |
| 11 | 11RtkW | 1011 |
| 12 | 12RtkW | 1100 |
| 13 | 13RtkW | 1101 |
| 14 | 14RtkW | 1110 |
| 15 | 15RtkW | 1111 |
And heating according to the working mode, continuously detecting the temperature of tap water in real time, and calculating and adjusting the heating power value according to the temperature difference and the set time in real time.
The invention calculates the difference between the water inlet temperature of tap water and the set required temperature by combining the combination of 4 heating pipes with different powers and simultaneously detecting the water inlet temperature of the tap water, then reversely calculates the required rinsing heating power by combining the set time of the main washing, determines the current actual power value according to the working power gear of the heating pipes, and dynamically adjusts the power value output by the rinsing heating pipes.
Meanwhile, the fine adjustment of different powers of 15 levels is realized, the power of the rinsing heating pipe is reduced to the maximum extent under the condition that the washing efficiency is not reduced or the main washing time is not increased, the line load is reduced, and the problem that the temperature of the rinsing water cannot be ensured in continuous washing under the limit conditions that the temperature of the inlet water of tap water is low in winter and the like is solved.
Example 2:
in the embodiment 2, improvement is made on the basis of the embodiment 1, the number of the heat pipes is increased to 5, and the ratio is 1:2:4:8:16, so that 1-31-level adjustment is realized. And regularly expanding the grading layer number of the heating pipes in sequence.
In addition, in combination with the power regulation method based on the temperature of the incoming water in the foregoing embodiments, the embodiments of the present application may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the power regulation methods in the above embodiments.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A power regulation method based on inlet water temperature is characterized by comprising the following steps:
acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature;
according to the temperature difference, determining a first heating power value required for heating single-time water inlet of the dishwasher from the water inlet temperature to the set rinsing temperature within preset main washing time;
and determining a second heating power value of the heating module according to the first heating power value, and determining the working mode of the heating module.
2. The method of claim 1, wherein the determining a first heating power value required for heating a single water inlet of the dishwasher from the water inlet temperature to the set rinsing temperature within a preset main washing time according to the temperature difference comprises:
calculating the first heating power value according to the temperature difference, wherein the calculation formula is as follows:
wherein, PminRepresents the first heating power value, C represents the specific heat capacity of water, M represents the single water inflow of water, t1Represents a preset main washing time, and δ T represents a temperature difference between the feed water temperature and a set rinsing temperature.
3. The method of claim 1, wherein the heating module comprises a plurality of operating steps, each operating step corresponds to a different power value, and the determining the second heating power value of the heating module according to the first heating power value comprises:
determining a selected operating range from the plurality of operating ranges, wherein the second heating power value corresponding to the selected operating range is closest to the first heating power value and is greater than or equal to the first heating power value.
4. The method of claim 3, wherein the heating module comprises a plurality of heating elements, each of the operating ranges comprises settings for on and off states of the plurality of heating elements, and the determining the operating mode of the heating module comprises:
and determining the on and off states of the plurality of heating elements according to the selected working position.
5. The method of claim 4 wherein the plurality of heating elements are arranged to be combined in 8421 coding to obtain different power levels.
6. A power conditioning apparatus based on the temperature of the incoming water, comprising:
the first calculation module is used for acquiring the water inlet temperature of the dish washing machine to obtain the temperature difference between the water inlet temperature and the set rinsing temperature;
the second calculation module is used for determining a first heating power value required for heating single-time water inlet of the dishwasher from the water inlet temperature to the set rinsing temperature within preset main washing time according to the temperature difference;
and the determining module is used for determining a second heating power value of the heating module according to the first heating power value and determining the working mode of the heating module.
7. The inlet water temperature-based power conditioning apparatus according to claim 6, wherein the second calculating module comprises a third calculating module for calculating the first heating power value according to the temperature difference, wherein the calculation formula is:
wherein, PminRepresents the first heating power value, C represents the specific heat capacity of water, M represents the single water inflow of water, t1Represents a preset main washing time, and δ T represents a temperature difference between the feed water temperature and a set rinsing temperature.
8. A power conditioning system based on inlet water temperature, the power conditioning system comprising:
the temperature sensing module is used for detecting the water inlet temperature of the dish washing machine;
the power conditioning device based on the temperature of the inlet water of any one of the above claims 6-7, connected to the temperature sensing module and obtaining the temperature of the inlet water of the dishwasher from the temperature sensing module;
and the heating module is connected with the power regulating device based on the inlet water temperature and works according to the working mode determined by the power regulating device based on the inlet water temperature.
9. The inlet water temperature-based power conditioning system of claim 8, further comprising a three-phase contactor-like structure comprising three lines, the heating module comprising a plurality of heating pipes, each of the heating pipes connected to one of the three lines.
10. The inlet water temperature-based power conditioning system of claim 9, further comprising the same number of relays as the number of heating pipes, wherein one end of each relay is connected to the inlet water temperature-based power conditioning device, and the other end of each relay is connected to 1 heating pipe.
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| CN202011140849.0A CN112263200A (en) | 2020-10-22 | 2020-10-22 | Power adjusting method, device and system based on inlet water temperature |
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| CN202011140849.0A CN112263200A (en) | 2020-10-22 | 2020-10-22 | Power adjusting method, device and system based on inlet water temperature |
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| CN111671371A (en) * | 2020-06-18 | 2020-09-18 | 上海明略人工智能(集团)有限公司 | Method and device for determining heating mode of dishwasher and storage medium |
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