Heating control method of multi-tub washing machine and multi-tub washing machine

Abstract

The application provides a heating control method of a multi-drum washing machine and the multi-drum washing machine. The multi-drum washing machine comprises a first drum, a second drum and a control unit. The first drum is provided with at least two first heating units and a first temperature sensor for detecting the first water temperature of the first drum; the second drum is provided with at least two second heating units and a second temperature sensor for detecting the second water temperature of the second drum. The control unit is connected with each first heating unit, each second heating unit, the first temperature sensor and the second temperature sensor, and is used for controlling the working state of each first heating unit and each second heating unit according to the first water temperature and the second water temperature. When it is judged that the first drum and the second drum both need to be heated according to the first water temperature and the second water temperature, the synchronous intelligent heating of the first drum and the second drum can be realized under the premise that the heating power of the multi-drum washing machine meets the requirements by controlling part of the first heating units and part of the second heating units to work.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machines, and particularly relates to a heating control method of a multi-drum washing machine and the multi-drum washing machine. BACKGROUND

[0002] The multi-drum washing machine can realize classified heating washing of clothes, intelligent sensing and gentle washing and protection, high-temperature mite killing and sterilization and the like with the help of water and detergent, has a high technical competitive advantage in the industry, and gradually appears in families pursuing higher life quality.

[0003] However, the multi-drum washing machine cannot simultaneously heat the multiple drums because the power of the multiple drum heaters is too high, exceeds the specified use power of a household type of civil appliance in the national standard and the current threshold of a household cable, and generates a large instantaneous current and harmonic current when turned on.

[0004] At present, the heating control of the multi-drum washing machine on the market mostly adopts alternating or sequential heating and simple working current detection on a power management module, and cannot solve the problem that the power limitation causes the multiple drums to be unable to be simultaneously heated. SUMMARY

[0005] The present application provides a heating control method of a multi-drum washing machine and the multi-drum washing machine, and solves the problem that the existing multi-drum washing machine is unable to simultaneously heat multiple drums due to power limitation.

[0006] To achieve the above object, the present application provides the following technical scheme:

[0007] A heating control method of a multi-drum washing machine, the multi-drum washing machine comprising a first drum and a second drum, the first drum being provided with at least two first heating units, the second drum being provided with at least two second heating units, the heating control method comprising the following steps:

[0008] obtaining a first water temperature in the first drum;

[0009] obtaining a second water temperature in the second drum;

[0010] controlling a working state of each of the first heating units and a working state of each of the second heating units according to the first water temperature and the second water temperature.

[0011] In some embodiments, the controlling of the working state of each of the first heating units and the working state of each of the second heating units according to the first water temperature and the second water temperature comprises:

[0012] determining whether the first water temperature reaches a first preset temperature to obtain a first result;

[0013] determining whether the second water temperature reaches a second preset temperature to obtain a second result;

[0014] controlling working states of each of the first heating units and working states of each of the second heating units according to the first result and the second result.

[0015] In some embodiments, if the first result is that the first water temperature does not reach the first preset temperature and the second result is that the second water temperature does not reach the second preset temperature, then some of the first heating units are controlled to work and some of the second heating units are controlled to work;

[0016] if the first result is that the first water temperature reaches the first preset temperature and the second result is that the second water temperature does not reach the second preset temperature, then all of the first heating units are controlled not to work and some or all of the second heating units are controlled to work;

[0017] if the first result is that the first water temperature does not reach the first preset temperature and the second result is that the second water temperature reaches the second preset temperature, then some or all of the first heating units are controlled to work and all of the second heating units are controlled not to work;

[0018] if the first result is that the first water temperature reaches the first preset temperature and the second result is that the second water temperature reaches the second preset temperature, then all of the first heating units and all of the second heating units are controlled not to work.

[0019] In some embodiments, the controlling some of the first heating units to work and some of the second heating units to work comprises:

[0020] obtaining a first difference between the first water temperature and the first preset temperature;

[0021] obtaining a second difference between the second water temperature and the second preset temperature;

[0022] comparing the first difference and the second difference to obtain a third result;

[0023] controlling some of the first heating units to work and some of the second heating units to work according to the third result.

[0024] In some embodiments, if the third result is that the first difference is greater than the second difference, then the number of the first heating units working is greater than the number of the second heating units working;

[0025] if the third result is that the first difference is equal to the second difference, controlling the number of the first heating units working to be equal to the number of the second heating units working;

[0026] if the third result is that the first difference is less than the second difference, controlling the number of the first heating units working to be less than the number of the second heating units working.

[0027] In some embodiments, the controlling part or all of the first heating units to work comprises:

[0028] obtaining a first difference between the first water temperature and the first preset temperature;

[0029] determining whether the first difference is lower than a first preset threshold, obtaining a fourth result;

[0030] controlling part or all of the first heating units to work according to the fourth result.

[0031] In some embodiments, if the fourth result is that the first difference is lower than the first preset threshold, controlling all of the first heating units to work;

[0032] if the fourth result is that the first difference is not lower than the first preset threshold, controlling part of the first heating units to work.

[0033] In some embodiments, the controlling part or all of the second heating units to work comprises:

[0034] obtaining a second difference between the second water temperature and the second preset temperature;

[0035] determining whether the second difference is lower than a second preset threshold, obtaining a fifth result;

[0036] controlling part or all of the second heating units to work according to the fifth result.

[0037] A multi-cylinder washing machine, comprising:

[0038] a first cylinder, the first cylinder being provided with at least two first heating units and a first temperature sensor, the first temperature sensor being used for detecting a first water temperature of the first cylinder;

[0039] a second cylinder, the second cylinder being provided with at least two second heating units and a second temperature sensor, the second temperature sensor being used for detecting a second water temperature of the second cylinder;

[0040] A control unit is connected with the first temperature sensor and the second temperature sensor, and is configured to control the working state of each first heating unit and each second heating unit according to the first water temperature and the second water temperature.

[0041] In some embodiments, the first cylinder is provided with a first switch, a second switch and two first heating units, and the second cylinder is provided with a third switch, a fourth switch and two second heating units.

[0042] The first switch is connected with the two first heating units in series, and the second switch is connected across either first heating unit in parallel.

[0043] The third switch is connected with the two second heating units in series, and the fourth switch is connected across either second heating unit in parallel.

[0044] The control unit is connected with the first switch, the second switch, the third switch and the fourth switch, and is configured to control the first switch, the second switch, the third switch and the fourth switch.

[0045] The heating control method of the multi-cylinder washing machine provided by the embodiments of the present application can control part of the first heating units of the first cylinder to work and part of the second heating units of the second cylinder to work when it is determined that both the first cylinder and the second cylinder need to be heated, so that the synchronous intelligent heating of the first cylinder and the second cylinder can be realized under the premise that the heating power of the multi-cylinder washing machine meets the requirements. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0047] Figure 1 The first flow chart of the heating control method of the multi-cylinder washing machine provided by the embodiments of the present application.

[0048] Figure 2 The second flow chart of the heating control method of the multi-cylinder washing machine provided by the embodiments of the present application.

[0049] Figure 3 The third flow chart of the heating control method of the multi-cylinder washing machine provided by the embodiments of the present application.

[0050] Figure 4 The first structure schematic diagram of the multi-cylinder washing machine provided by the embodiments of the present application.

[0051] Figure 5 A second structure diagram of a multi-barrel washing machine provided by an embodiment of the present application.

[0052] Figure 6 A third structure diagram of a multi-barrel washing machine provided by an embodiment of the present application. DETAILED DESCRIPTION

[0053] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0054] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.

[0055] The embodiments of the present application provide a heating control method of a multi-barrel washing machine, which may be a drum washing machine or a pulsator washing machine, for example, and has a function of heating water in a barrel, thereby realizing classified heating washing of clothes, high-temperature mite killing and sterilization, etc.

[0056] For example, refer to Figure 1 , Figure 1 A first flowchart of the heating control method of the multi-barrel washing machine provided by an embodiment of the present application. The multi-barrel washing machine includes a first barrel and a second barrel, the first barrel is provided with at least two first heating units, and the second barrel is provided with at least two second heating units. The heating control method of the multi-barrel washing machine is executed by a controller of the multi-barrel washing machine, for example, and includes the following steps:

[0057] Step s101: obtaining a first water temperature in the first barrel;

[0058] The first barrel is provided with at least one temperature sensor, for example, and all the temperature sensors are connected to the controller for real-time detection of the temperature of water in the first barrel. The temperature sensor may be any one or a combination of multiple of thermocouple sensors, thermistor sensors, resistance temperature detectors and IC temperature sensors, for example. The temperature sensor is arranged at the bottom or middle part of the barrel and on the inner wall or outer wall of the barrel, for example. The controller obtains the first water temperature measured by the temperature sensor periodically, for example. If the temperature sensor is multiple, it may be dispersedly arranged in the barrel and measure one water temperature respectively, and the controller obtains the water temperatures measured by the multiple temperature sensors and takes the average value as the first water temperature, so that the obtained first water temperature is closer to the real temperature of water in the barrel.

[0059] Step s102: obtaining a second water temperature in the second drum;

[0060] The second drum is also provided with a temperature sensor for detecting the water temperature in the second drum in real time, and the controller obtains the detected water temperature periodically to obtain the second water temperature. The temperature sensor can be arranged in the same manner as the first drum or in any of the above-mentioned embodiments, and thus will not be described here.

[0061] Step s103: controlling the working state of each first heating unit and the working state of each second heating unit according to the first water temperature and the second water temperature.

[0062] The first heating unit and the second heating unit can be any one or any combination of a heating pipe, a heating wire, a heating rod, and an electromagnetic induction heating coil. All the first heating units and all the second heating units are connected to the controller and have two states of working or not working.

[0063] In some embodiments, for example, refer to Figure 2 , Figure 2 A second flowchart of the heating control method of the multi-drum washing machine provided in the embodiments of the present application is provided, and step s103 further includes steps s1031-s1033:

[0064] Step s1031: determining whether the first water temperature reaches a first preset temperature to obtain a first result.

[0065] The first preset temperature can be 30-90°C, for example, and can be obtained according to the operation of the user. For example, the user can select 30°C washing, 40°C washing, 60°C washing, or 90°C washing according to actual needs, so that the controller obtains the corresponding washing temperature as the first preset temperature. Then, the first preset temperature is compared with the first water temperature to determine whether the first water temperature reaches the first preset temperature. The first result includes two cases that the first water temperature reaches the first preset temperature and the first water temperature does not reach the first preset temperature.

[0066] Step s1032: determining whether the second water temperature reaches a second preset temperature to obtain a second result.

[0067] The second preset temperature can be 30-90°C, for example, and can be obtained in the same manner as the first preset temperature, which will not be described here. The controller obtains the second preset temperature and compares it with the obtained second water temperature to determine whether the second water temperature reaches the second preset temperature. The second result includes two cases that the second water temperature reaches the second preset temperature and the second water temperature does not reach the second preset temperature.

[0068] Step s1033: controlling the working state of each first heating unit and the working state of each second heating unit according to the first result and the second result.

[0069] In some embodiments, see the example Figure 3 , Figure 3 A third flow chart of the heating control method of the multi-cylinder washing machine is provided for the embodiments of the present application. Step s1033 includes the following four cases:

[0070] C1: the first result is that the first water temperature does not reach the first preset temperature, and the second result is that the second water temperature does not reach the second preset temperature, then control part of the first heating unit to work and part of the second heating unit to work.

[0071] Wherein, the total power requirement of the working first heating unit and the second heating unit cannot make the power of the washing machine running at this time exceed the specified use power of the household appliances of the first type of household, and cannot make the current of the washing machine running at this time exceed the threshold of the current bearing of the household cable.

[0072] In some embodiments, the control part of the first heating unit to work and part of the second heating unit to work further includes steps s10-s13:

[0073] Step s10: obtaining a first difference between the first water temperature and the first preset temperature;

[0074] Step s11: obtaining a second difference between the second water temperature and the second preset temperature;

[0075] Step s12: comparing the size of the first difference and the second difference to obtain a third result;

[0076] Step s13: controlling part of the first heating unit to work and part of the second heating unit to work according to the third result.

[0077] For example, the first water temperature is t1℃, and the first preset value is T1℃, then the first difference is calculated as |T1-t1| for example; the second water temperature is t2℃, and the second preset value is T2℃, then the second difference is calculated as |T2-t2| for example.

[0078] Controlling part of the first heating unit to work and part of the second heating unit to work according to the third result includes the following cases, for example:

[0079] The third result is that the first difference is greater than the second difference, then the number of the working first heating unit is controlled to be greater than the number of the working second heating unit;

[0080] The third result is that the first difference is equal to the second difference, then the number of the working first heating unit is controlled to be equal to the number of the working second heating unit;

[0081] The third result is that the first difference is less than the second difference, then the number of the working first heating unit is controlled to be less than the number of the working second heating unit.

[0082] C2: the first result is that the first water temperature reaches the first preset temperature, and the second result is that the second water temperature does not reach the second preset temperature, then all the first heating units are controlled to be inoperative, and part or all of the second heating units are controlled to be operative.

[0083] In some embodiments, the controlling part or all of the second heating units to be operative includes steps s20-s22:

[0084] Step s20: obtaining a first difference between the first water temperature and the first preset temperature;

[0085] Step s21: judging whether the first difference is lower than a first preset threshold, to obtain a fourth result;

[0086] Step s22: controlling part or all of the first heating units to be operative according to the fourth result.

[0087] In some embodiments, the controlling part or all of the first heating units to be operative according to the fourth result includes the following cases:

[0088] The fourth result is that the first difference is lower than the first preset threshold, then all the first heating units are controlled to be operative;

[0089] The fourth result is that the first difference is not lower than the first preset threshold, then part of the first heating units are controlled to be operative.

[0090] C3: the first result is that the first water temperature does not reach the first preset temperature, and the second result is that the second water temperature reaches the second preset temperature, then part or all of the first heating units are controlled to be operative, and all the second heating units are controlled to be inoperative.

[0091] In some embodiments, the controlling all the second heating units to be inoperative includes steps s30-step s32:

[0092] Step s30: obtaining a second difference between the second water temperature and the second preset temperature;

[0093] Step s31: judging whether the second difference is lower than a second preset threshold, to obtain a fifth result;

[0094] Step s32: controlling part or all of the second heating units to be operative according to the fifth result.

[0095] In some embodiments, the controlling part or all of the second heating units to be operative according to the fifth result includes the following cases:

[0096] The fifth result is that the second difference is lower than the second preset threshold, then all the second heating units are controlled to be operative;

[0097] The fifth result is that the second difference is not lower than the second preset threshold, then part of the second heating units are controlled to be operative.

[0098] C4: the first result is that the first water temperature reaches the first preset temperature, and the second result is that the second water temperature reaches the second preset temperature, then all the first heating units and all the second heating units are controlled to be inoperative.

[0099] As Figure 3 The controller obtains the first water temperature of the first cartridge and the second water temperature of the second cartridge, for example, once every time S1, and determines whether the first water temperature is greater than or equal to the first preset temperature and the second water temperature is greater than or equal to the second preset temperature. If the determination result is yes, all the first heating units and all the second heating units are turned off, and the heating process is ended.

[0100] In some embodiments, before the controller starts to obtain the first water temperature and the second water temperature, steps s1001-s1002 are further included:

[0101] Step s1001: obtaining the first cartridge and the second cartridge process information;

[0102] Step s1002: determining whether the first cartridge and the second cartridge both enter the heating process.

[0103] If the first cartridge and the second cartridge both enter the heating process, the above steps s101-s103 are executed.

[0104] If the first cartridge and the second cartridge do not both enter the heating process, the following steps s201 are executed:

[0105] Determining whether the first cartridge enters the heating process, obtaining a sixth result.

[0106] If the sixth result is that the first cartridge enters the heating process, the following steps s202-s203 are executed:

[0107] Step s202: obtaining the first water temperature in the first cartridge;

[0108] Step s203: determining whether the first water temperature reaches the first preset temperature, obtaining a first result;

[0109] If the first result is that the first water temperature does not reach the first preset temperature, step s2041 is executed: all or part of the first heating units are controlled to be operative.

[0110] If the first result is that the first water temperature reaches the first preset temperature, step s2042 is executed: all the first heating units are controlled to be inoperative.

[0111] In some embodiments, if the first cartridge alone enters the heating process, the controller obtains the first water temperature once every time S2, and determines whether the first water temperature reaches the first preset temperature, until it is determined that the first water temperature reaches the first preset temperature, and the heating process is ended.

[0112] If the sixth result is that the first drum does not enter the heating process, step s301 is performed to determine whether the second drum enters the heating process, and a seventh result is obtained.

[0113] If the seventh result is that the second drum enters the heating process, steps s302-s303 are performed.

[0114] Step s302: Obtain the second water temperature in the second drum.

[0115] Step s303: Determine whether the second water temperature reaches a second preset temperature, and obtain a second result.

[0116] If the second result is that the second water temperature does not reach the second preset temperature, step s3041 is performed to control all or part of the second heating units to work.

[0117] If the second result is that the second water temperature reaches the second preset temperature, step s3042 is performed to control all the second heating units to not work.

[0118] In some embodiments, if the second drum enters the heating process alone, the controller obtains the second water temperature every S2, and determines whether the second water temperature reaches the second preset temperature until it is determined that the second water temperature reaches the second preset temperature, and the heating process ends.

[0119] If the seventh result is that the second drum does not enter the heating process, the above step s1001 is performed again.

[0120] The heating control method of the multi-drum washing machine provided by the embodiments of the present application can heat only the drum that needs to be heated when it is determined that only one drum needs to be heated according to the first water temperature and the second water temperature, and can ensure that the multi-drum washing machine can realize synchronous heating of the first drum and the second drum under the premise that the heating power meets the requirements by making part of the first heating units work and part of the second heating units work when it is determined that the first drum and the second drum both need to be heated. Meanwhile, the number of the working first heating units and the second heating units can be controlled according to the sizes of the first water temperature and the second water temperature, so as to adjust the heating intensity, and the intelligent heating of the multi-drum washing machine is realized.

[0121] The present application also provides a multi-drum washing machine. For example, please refer to Figure 4 , Figure 4 The first structure diagram of the multi-drum washing machine 1000 provided by the embodiments of the present application is shown. The multi-drum washing machine 1000 includes a first drum 100, a second drum 200 and a control unit 300. The first drum 100, the second drum 200 and the control unit 300 are connected.

[0122] The first drum 100 is provided with at least two first heating units 110 and a first temperature sensor 120. The first temperature sensor 120 is used to detect the first water temperature of the first drum 100.

[0123] The second drum 200 is provided with at least two second heating units 210 and a second temperature sensor 220. The second temperature sensor 220 is used to detect the second water temperature of the second drum 200.

[0124] The control unit 300 is connected with the first temperature sensor 120 and the second temperature sensor 220, and is used to control the working state of each first heating unit 110 and each second heating unit 210 according to the first water temperature and the second water temperature.

[0125] The first temperature sensor 120 and the second temperature sensor 220 may, for example, be any one of a thermocouple sensor, a thermistor sensor, a resistance temperature detector, and an IC temperature sensor.

[0126] The first heating unit 110 and the second heating unit 210 may, for example, be any one of a heating pipe, a heating wire, a heating rod, and an electromagnetic induction heating ring.

[0127] The multi-drum washing machine 1000 provided by the embodiment of the present application controls only part of the first heating units 110 and part of the second heating units 210 to work when the first drum 100 and the second drum 200 both need to be heated, so that the first drum 100 and the second drum 200 are synchronously heated under the premise that the heating power of the multi-drum washing machine 1000 meets the requirements. At the same time, by detecting the first water temperature of the first drum 100 and the second water temperature of the second drum 200 in real time to determine the drum that needs to be heated and the heating intensity required by the drum, the working state of each first heating unit 110 and each second heating unit 210 is controlled, and intelligent heating control of the multi-drum washing machine is realized.

[0128] Further, please refer to Figure 5 , Figure 5 The second structure diagram of the multi-drum washing machine 1000 provided by the embodiment of the present application is shown. The multi-drum washing machine 1000 includes a first drum 100 and a second drum 200.

[0129] The first drum 100 is provided with a first switch 131, a second switch 132, a first first heating unit 111, and a second first heating unit 112.

[0130] The first end of the first switch 131 is connected to a power supply, and the second end of the first switch 131 is connected to the first end of the second first heating unit 112 through the first first heating unit 111. The second switch 132 is connected in parallel across the first first heating unit 111 or the second first heating unit 112, for example, across the second first heating unit 112.

[0131] The second drum 200 is provided with a third switch 231, a fourth switch 232, a first second heating unit 211 and a second second heating unit 212.

[0132] The first end of the third switch 231 is connected to the first end of the first switch 131 and then to the first end of the power supply, and the second end of the third switch 231 is connected to the first end of the second second heating unit 212 through the first second heating unit 211. The second end of the second second heating unit 212 is connected to the second end of the second first heating unit 112 and then to the second end of the power supply. The fourth switch 232 is connected in parallel across the first second heating unit 211 or the second second heating unit 212, for example, across the second second heating unit 212.

[0133] In the heating control process of the multi-drum washing machine 1000, when the first drum 100 and the second drum 200 need to be heated at the same time, the first switch 131, the second switch 132, the third switch 231 and the fourth switch 232 are all controlled to be turned on, so that the first first heating unit 111 and the first second heating unit 211 work, and the second first heating unit 112 and the second second heating unit 212 do not work due to being short-circuited; when only the first drum 100 needs to be heated, the first switch 131 is controlled to be turned on, the second switch 132 is controlled to be turned off, and the third switch 231 is controlled to be turned off, so that the first first heating unit 111 and the second first heating unit 112 work, and the first second heating unit 211 and the second second heating unit 212 do not work; when only the second drum 200 needs to be heated, the first switch 131 is controlled to be turned off, the third switch 231 is controlled to be turned on, and the fourth switch 232 is controlled to be turned off, so that the first first heating unit 111 and the second first heating unit 112 do not work, and the first second heating unit 211 and the second second heating unit 212 work.

[0134] In other embodiments, please refer to Figure 6 , Figure 6 A third structure diagram of the multi-drum washing machine 1000 provided by the embodiments of the present application is provided.

[0135] The first switch 131 and the first first heating unit 111 are connected in series to form a first path 11; the second switch 132 and the second first heating unit 112 are connected in series to form a second path 12; the third switch 231 and the first second heating unit 211 are connected in series to form a third path 13; the fourth switch 232 and the second second heating unit 212 are connected in series to form a fourth path 14; the first path 11, the second path 12, the third path 13 and the fourth path 14 are connected in parallel to each other and then to the two ends of the power supply.

[0136] In the heating control process of the multi-cylinder washing machine 1000, when the first cylinder 100 and the second cylinder 200 need to be heated at the same time, only the first switch 131 or the second switch 132 is controlled to be turned on, and only the third switch 231 or the fourth switch 232 is controlled to be turned on, so that only the first first heating unit 111 or the second first heating unit 112 in the first cylinder works, and only the first second heating unit 211 or the second second heating unit 212 in the second cylinder works; when only the first cylinder 100 needs to be heated, the first switch 131 and the second switch 132 are controlled to be turned on, and the third switch 231 and the fourth switch 232 are controlled to be turned off, so that the first first heating unit 111 and the second first heating unit 112 work, and the first second heating unit 211 and the second second heating unit 212 do not work; when only the second cylinder 200 needs to be heated, the first switch 131 and the second switch 132 are controlled to be turned off, and the third switch 231 and the fourth switch 232 are controlled to be turned on, so that the first first heating unit 111 and the second first heating unit 112 do not work, and the first second heating unit 211 and the second second heating unit 212 work.

[0137] The multi-cylinder washing machine 1000 provided by the embodiment of the present application can control only one heating unit in the first cylinder 100 and the second cylinder 200 to work when the first cylinder 100 and the second cylinder 200 need to be heated at the same time, so as to realize synchronous intelligent heating of the double cylinders under the premise that the heating power of the washing machine meets the requirements.

[0138] The heating control method of the multi-cylinder washing machine and the multi-cylinder washing machine provided by the embodiment of the present application are described in detail above, and the principle and implementation mode of the present application are described by applying specific examples in this paper. The above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description of the embodiments is only used to help understand the method of the present application and its core

Claims

1. A heating control method of a multi-cylinder washing machine, characterized by, The multi-cylinder washing machine comprises a first cylinder and a second cylinder, the first cylinder is provided with at least two first heating units, the second cylinder is provided with at least two second heating units, and the heating control method comprises the following steps: obtaining a first water temperature in the first cylinder; obtaining a second water temperature in the second cylinder; determining whether the first water temperature reaches a first preset temperature to obtain a first result; determining whether the second water temperature reaches a second preset temperature to obtain a second result; if the first result is that the first water temperature does not reach the first preset temperature and the second result is that the second water temperature does not reach the second preset temperature, then controlling part of the first heating units to work and part of the second heating units to work, comprising: obtaining a first difference between the first water temperature and the first preset temperature; obtaining a second difference between the second water temperature and the second preset temperature; comparing the first difference and the second difference to obtain a third result; if the third result is that the first difference is greater than the second difference, then controlling the number of working first heating units to be greater than the number of working second heating units; if the third result is that the first difference is equal to the second difference, then controlling the number of working first heating units to be equal to the number of working second heating units; if the third result is that the first difference is less than the second difference, then controlling the number of working first heating units to be less than the number of working second heating units.

2. The heating control method according to claim 1, wherein: if the first result is that the first water temperature reaches the first preset temperature and the second result is that the second water temperature does not reach the second preset temperature, then controlling all the first heating units to not work and controlling part or all of the second heating units to work; if the first result is that the first water temperature does not reach the first preset temperature and the second result is that the second water temperature reaches the second preset temperature, then controlling part or all of the first heating units to work and controlling all the second heating units to not work; if the first result is that the first water temperature reaches the first preset temperature and the second result is that the second water temperature reaches the second preset temperature, then controlling all the first heating units and all the second heating units to not work.

3. The heating control method according to claim 2, wherein The control of part or all of the first heating units to work comprises: obtaining a first difference between the first water temperature and the first preset temperature; determining whether the first difference is lower than a first preset threshold to obtain a fourth result; controlling part or all of the first heating units to work according to the fourth result.

4. The heating control method according to claim 3, wherein: if the fourth result is that the first difference is lower than the first preset threshold, then controlling all the first heating units to work; if the fourth result is that the first difference is not lower than the first preset threshold, then controlling part of the first heating units to work.

5. The heating control method according to claim 2, wherein The control of part or all of the second heating units to work comprises: obtaining a second difference between the second water temperature and the second preset temperature; determining whether the second difference is lower than a second preset threshold, to obtain a fifth result; controlling part or all of the second heating units to work according to the fifth result.

6. A multiple tub washing machine characterized by comprising: a first cylinder, the first cylinder being provided with at least two first heating units and a first temperature sensor, the first temperature sensor being used to detect a first water temperature of the first cylinder; a second cylinder, the second cylinder being provided with at least two second heating units and a second temperature sensor, the second temperature sensor being used to detect a second water temperature of the second cylinder; a control unit, connected with the first temperature sensor and the second temperature sensor, and used to: determine whether the first water temperature reaches a first preset temperature, to obtain a first result; determine whether the second water temperature reaches a second preset temperature, to obtain a second result; if the first result is that the first water temperature does not reach the first preset temperature and the second result is that the second water temperature does not reach the second preset temperature, then controlling part of the first heating units to work and part of the second heating units to work, including: obtaining a first difference between the first water temperature and the first preset temperature; obtaining a second difference between the second water temperature and the second preset temperature; comparing the first difference and the second difference, to obtain a third result; if the third result is that the first difference is greater than the second difference, then controlling the number of the working first heating units to be greater than the number of the working second heating units; if the third result is that the first difference is equal to the second difference, then controlling the number of the working first heating units to be equal to the number of the working second heating units; if the third result is that the first difference is less than the second difference, then controlling the number of the working first heating units to be less than the number of the working second heating units.

7. A multiple tub washing machine according to claim 6, characterized in that, the first cylinder is provided with a first switch, a second switch and two first heating units, and the second cylinder is provided with a third switch, a fourth switch and two second heating units; the first switch and the two first heating units are connected in series, and the second switch is connected in parallel to both ends of any first heating unit; the third switch and the two second heating units are connected in series, and the fourth switch is connected in parallel to both ends of any second heating unit; the control unit is connected with the first switch, the second switch, the third switch and the fourth switch, and is used to control the first switch, the second switch, the third switch and the fourth switch.

Images