Washing machine and calculation method

Abstract

The present invention provides a washing machine and a calculation method, comprising a washing tub having a washing chamber for accommodating clothes; a temperature sensing assembly connected to an external pipeline so that washing water in the external pipeline passes through the temperature sensing assembly before entering the washing chamber; the temperature sensing assembly including a temperature sensing component for detecting the temperature of the washing water; a pressure measuring module connected to an external circuit to detect the voltage applied to the washing machine by the external circuit; and a control module connected to the temperature sensing assembly and the pressure measuring module for signal communication. The control module calculates the operating time of the washing machine based on the temperature signal measured by the temperature sensing component and the voltage signal measured by the pressure measuring module. The washing machine of the present invention solves the technical problem of inaccurate operating time displayed by washing machines in the related art.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular to a washing machine and a calculation method. Background Art

[0002] Before a washing machine starts running, you will usually set the running time of the washing machine. Before the washing machine starts running, the running time displayed is usually the default setting of the equipment manufacturer according to different programs before leaving the factory.

[0003] However, the actual program runtime often differs significantly from the default runtime. Due to differences in water inlet temperature and mains voltage, the actual heating phase duration can differ significantly from the default heating duration, affecting the accuracy of the displayed runtime and creating a poor user experience.

[0004] Therefore, the prior art needs to be further developed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a washing machine and a calculation method to solve the technical problem of inaccurate running time displayed by the washing machine in the related art.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a washing machine and a calculation method are provided, including a washing tub, wherein the washing tub has a washing cavity for accommodating clothes; a temperature sensing component, connected to an external pipeline, so that the washing water in the external pipeline enters the washing cavity after passing through the temperature sensing component; the temperature sensing component includes a temperature sensing component for detecting the temperature of the washing water; a pressure measuring module, the pressure measuring module is connected to an external circuit to detect the voltage passed into the washing machine by the external circuit; a control module, the control module is connected to the temperature sensing component signal, the control module is connected to the pressure measuring module signal, and the control module calculates the running time of the washing machine based on the temperature signal measured by the temperature sensing component and the voltage signal measured by the pressure measuring module.

[0007] Furthermore, the washing machine also includes a water collecting box, in which a water collecting tank is provided. The water collecting tank is connected to the washing cavity so that the fluid in the external pipeline flows into the washing cavity after passing through the water collecting tank; the temperature sensing component is provided on the inner wall of the water collecting tank.

[0008] Furthermore, the washing tub includes an outer drum; an inner drum, the inner drum is located inside the outer drum, the washing cavity is located inside the inner drum, and there is an installation space between the inner drum and the outer drum; the water collecting box is located in the installation space.

[0009] Furthermore, the water collecting box is connected to the outer wall of the inner cylinder; and / or, the water collecting tank is located below the washing cavity; and / or, a heating component for heating the washing water is provided on the inner wall of the water collecting tank.

[0010] Furthermore, the present solution also provides a calculation method for calculating the running time t1 of the washing machine, which is applicable to the above-mentioned washing machine.

[0011] Furthermore, the calculation method further includes setting a target temperature T of the washing machine; introducing washing water into the washing chamber 11, detecting the temperature T1 of the washing water using a temperature sensing component, and obtaining a temperature difference ΔT between the temperature T1 of the washing water and the target temperature T; wherein ΔT = T - T1; and measuring the voltage introduced into the washing machine using a pressure measuring module to obtain a voltage effective value V ac ; The control module is based on ΔT and V ac The value of is calculated to obtain the time trimming value t; the control module obtains the running time t1 of the washing machine according to the time trimming value t and the preset time t0 of the washing machine; wherein t1=t0+t.

[0012] Furthermore, the method of introducing washing water into the washing chamber includes setting a water supply time s in the control module, and the control module controls the external pipeline to supply washing water into the washing machine for s time.

[0013] Furthermore, the effective value of voltage V is obtained ac The method includes measuring the voltage value V of the bus bus , using the formula The calculated voltage V ac .

[0014] Furthermore, the control module is based on ΔT and V ac The method of calculating the value includes the following: ac , using the formula P1=V ac / R, the heating power P1 of the washing machine is obtained; then the time adjustment value t is obtained according to the heating power P1 of the washing machine; where R is the resistance value of the heating component of the washing machine.

[0015] Furthermore, the method for obtaining the time adjustment value t based on the heating power P1 of the washing machine includes obtaining the deviation ΔP between the actual heating power and the rated power P2 of the heating component based on the heating power P1 of the washing machine; wherein ΔP = P1 - P2; and obtaining the time adjustment value t using the formula t = (ΔT - α) / βΔP; wherein α and β are parameters, and the values ​​of α and β are obtained based on experiments.

[0016] Beneficial effects:

[0017] By detecting the temperature of the washing water and the mains voltage in advance to calculate the heating time of the washing water, the user can be provided with the accurate running time when selecting the washing mode before starting the washing program. This solves the technical problem of inaccurate running time displayed by washing machines in related technologies, making it convenient for users to plan their time in advance and improving their laundry experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a schematic structural diagram of a washing machine used in an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the transmission process of bus voltage to a microcontroller in the prior art adopted in an embodiment of the present invention;

[0020] Figure 3 This is a flowchart of a calculation method for detecting a temperature difference in a washing machine, as used in an embodiment of the present invention;

[0021] Figure 4 This is a flowchart of a calculation method for detecting the heating power of a washing machine used in an embodiment of the present invention;

[0022] Figure 5 It is a flowchart of a method for calculating the running time of a washing machine adopted in an embodiment of the present invention.

[0023] The above drawings include the following reference numerals:

[0024] 1. Washing tub; 101. Outer drum; 102. Inner drum; 103. Installation space; 11. Washing chamber; 2. Temperature sensing assembly; 21. Temperature sensing component; 5. Water collection box; 51. Water collection tank; 52. Heating component. Specific implementation methods

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0026] According to an embodiment of the present invention, a washing machine is provided. Figures 1 to 5 , including a washing tub 1, which has a washing cavity 11 for accommodating clothes; a temperature sensing component 2, which is connected to an external pipeline so that the washing water in the external pipeline enters the washing cavity 11 after passing through the temperature sensing component 2; the temperature sensing component 2 includes a temperature sensing component 21 for detecting the temperature of the washing water; a pressure measuring module, which is connected to an external circuit to detect the voltage passed into the washing machine by the external circuit; a control module, which is signal-connected to the temperature sensing component 2 and signal-connected to the pressure measuring module. The control module calculates the running time of the washing machine according to the temperature signal measured by the temperature sensing component 21 and the voltage signal measured by the pressure measuring module.

[0027] Specifically, if Figure 2 As shown, most variable frequency drive washing machines on the market include a bus voltage detection circuit. Its working process is as follows: the AC mains is rectified by a rectifier bridge to a DC bus voltage. The bus voltage detection circuit uses a resistor divider network to step down the high-voltage bus voltage to a voltage range detectable by the analog-to-digital conversion circuit. After analog-to-digital conversion, the sampled bus voltage data is sent to the microcontroller. With this configuration, when the user selects a wash mode, the wash water first passes through the temperature sensing component 21, which transmits the real-time temperature of the wash water to the control module. The pressure measurement module also transmits the real-time voltage when the washing machine is powered on to the control module. The control module receives the real-time temperature and voltage signals and calculates and determines the heating time for the wash water, enabling timely and accurate calculation of the heating time. This provides the user with accurate operating time when the user selects a wash mode, eliminating interference caused by unstable mains voltage and unstable initial temperature of the wash water that can affect the calculation of the heating time. This facilitates user planning and improves the user's laundry experience, resolving the technical issue of inaccurate operating time displayed by washing machines in the related art.

[0028] Preferably, the temperature sensing component 21 is configured as a temperature sensing package.

[0029] See also Figure 1 The washing machine also includes a water collecting box 5, which is provided with a water collecting tank 51. The water collecting tank 51 is connected to the washing chamber 11 so that the fluid in the external pipeline passes through the water collecting tank 51 and flows into the washing chamber 11; the temperature sensing component 21 is provided on the inner wall of the water collecting tank 51.

[0030] The water collecting box 5 separates the washing chamber 11 from the temperature sensing component 21, so that the washing water flowing into the washing chamber 11 first flows through the temperature sensing component 21 for temperature measurement. After the control module calculates the precise running time of the washing machine, the washing water enters the washing chamber 11 again, which can make the washing time more accurate.

[0031] It should be noted that the volume of washing water in the water collecting box 5 can be controlled by controlling the time when the washing water enters the water collecting box 5. Preferably, the amount of washing water in the water collecting box 5 can just immerse the temperature sensing component 21. In this way, the temperature sensing component 21 can detect the temperature of the washing water without affecting the subsequent water inlet process into the washing chamber 11.

[0032] See also Figure 1 The washing tub 1 includes an outer barrel 101 and an inner barrel 102 . The inner barrel 102 is located inside the outer barrel 101 , the washing chamber 11 is located inside the inner barrel 102 , and an installation space 103 is provided between the inner barrel 102 and the outer barrel 101 . The water collecting box 5 is located in the installation space 103 .

[0033] The water collecting box 5 is arranged in the installation space 103 between the inner drum 102 and the outer drum 101, which does not increase the volume of the washing machine. After the washing water is injected into the water collecting box 5 to complete the temperature measurement and obtain the running time of the washing machine, it can directly enter the inner drum 102, which more reasonably plans the space of the washing machine.

[0034] See also Figure 1 , the water collecting box 5 is connected to the outer wall of the inner cylinder 102; the water collecting tank 51 is located below the washing chamber 11; a heating component 52 for heating the washing water is provided on the inner wall of the water collecting tank 51.

[0035] The washing water heated to a preset temperature by the heating component 52 flows into the washing chamber 11 to wash the laundry.

[0036] Preferably, the heating component 52 is configured as a heating tube.

[0037] See also Figures 3 to 5 ,This solution also provides a calculation method for calculating the running time t1 of the washing machine, and the calculation method is applicable to the above-mentioned washing machine.

[0038] When the user selects a wash mode, the temperature sensing component 21 transmits the real-time temperature of the wash water to the control module. Simultaneously, the pressure measuring module transmits the real-time voltage when the washing machine is powered on to the control module. The control module receives the real-time temperature and voltage signals, calculates and derives the heating time for the wash water, and, based on the default time required for the wash mode, derives the washing machine's operating time. This provides users with accurate operating time information when selecting a wash mode, facilitating advance time planning and enhancing their laundry experience.

[0039] See also Figures 3 to 5 , the calculation method also includes:

[0040] Set the target temperature T of the washing machine;

[0041] Washing water is introduced into the washing chamber 11, and the temperature T1 of the washing water is detected by the temperature sensing component 21 to obtain a temperature difference ΔT between the temperature T1 of the washing water and the target temperature T; wherein ΔT=T-T1;

[0042] Use the pressure measurement module to measure the voltage entering the washing machine and obtain the effective value of the voltage V ac ;

[0043] The control module is based on ΔT and V ac The value of is calculated to obtain the time adjustment value t;

[0044] The control module obtains the running time t1 of the washing machine according to the time trimming value t and the preset time t0 of the washing machine; wherein t1=t0+t.

[0045] Through this method, it is first clarified how to calculate the heating time (time adjustment value t) of washing water through the pressure measuring module and the temperature sensing component 21, and then obtain the running time t1 of the washing machine according to the default time of the washing mode of the washing machine (preset time t0).

[0046] See also Figures 3 to 5 The method of introducing washing water into the washing chamber 11 includes setting a water supply time s in the control module, and the control module controls the external pipeline to supply washing water into the washing machine for s time.

[0047] By controlling the water supply duration (s), the volume of wash water in the water collection box 5 can be controlled. First, the water inlet valve is opened for S seconds, ensuring that the wash water just submerges the temperature-sensing component 21 while ensuring that the level of the wash water in the water collection box 5 does not exceed the water collection box 5. The temperature detected by the temperature-sensing component 21 at this time is T1. Since washing machines with a wash water heating function all have a temperature-sensing component 21, and the washing machines and calculation method of this solution are specifically designed for washing machines with heating functions, a separate temperature-sensing component 21 is not required. This allows for monitoring the temperature of the wash water without adding an additional temperature sensor.

[0048] See also Figures 3 to 5 , get the voltage effective value V ac The methods include:

[0049] Measure the bus voltage V bus , using the formula The calculated voltage V ac .

[0050] After knowing the temperature difference, we need to calculate the heating time of washing water. However, the heating time is related to the heating power, which is related to the real-time voltage. Therefore, if we want to get the accurate heating time, we need to get the accurate real-time voltage, that is, the effective value of the voltage V. ac .

[0051] See also Figures 3 to 5 , the control module according to ΔT and V ac The method of calculating the value includes the following: ac , using the formula P1=V ac / R, the heating power P1 of the washing machine is obtained; and then the time adjustment value t is obtained according to the heating power P1 of the washing machine; wherein R is the resistance value of the heating component 52 of the washing machine.

[0052] Known voltage RMS V ac Since the resistance value of the heating component 52 is constant, the effective value of the voltage V can be directly obtained. ac The heating power P1 is below.

[0053] See also Figures 3 to 5 The method for obtaining the time adjustment value t according to the heating power P1 of the washing machine includes obtaining a deviation ΔP between the actual heating power and the rated power P2 of the heating component according to the heating power P1 of the washing machine; wherein ΔP=P1-P2;

[0054] The time adjustment value t is obtained using the formula t=(ΔT-α) / βΔP; wherein α and β are parameters, and the values ​​of α and β are obtained based on experiments.

[0055] The time correction value t is proportional to the temperature difference ΔT and inversely proportional to the deviation ΔP.

[0056] Working principle:

[0057] The user selects an operating mode. If the operating mode does not include a heating process, the corrected time is displayed directly. If the operating mode includes a heating process, the washing water enters the washing water and is measured by the temperature sensing component 2. The difference between the set target washing water temperature T and the washing water temperature T1 is then calculated, that is, the temperature rise value ΔT of the water temperature. The washing machine's heating power P1 is then obtained, and the deviation ΔP between the actual heating power P1 and the rated heating power P2 of the heating component is calculated. Since the correction time t is proportional to the temperature rise value ΔT and inversely proportional to the heating power, the correction time can be calculated using the formula t = (ΔT-α) / βΔP, where α and β are correction coefficients that can be obtained through experimental measurement.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0059] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0060] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0061] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above-mentioned computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more computer devices (which can be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application.

[0062] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0063] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented by other methods. Among them, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0064] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0065] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0066] The above is only the preferred implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A washing machine, characterized in that: include: A washing tub (1), wherein the washing tub (1) has a washing chamber (11) for accommodating clothes; A temperature sensing component (2) is connected to an external pipeline so that the washing water in the external pipeline passes through the temperature sensing component (2) and then enters the washing chamber (11); the temperature sensing component (2) includes a temperature sensing part (21) for detecting the temperature of the washing water; a pressure measuring module, the pressure measuring module being connected to an external circuit to detect a voltage supplied from the external circuit to the washing machine; A control module, the control module being connected to the temperature sensing component (2) by signal, the control module being connected to the pressure measuring module by signal, the control module calculating the running time t1 of the washing machine based on the temperature signal measured by the temperature sensing component (21) and the voltage signal measured by the pressure measuring module; The calculation method of the running time t1 of the washing machine includes: Set the target temperature T of the washing machine; Washing water is introduced into the washing chamber (11), and the temperature T1 of the washing water is detected by a temperature sensing component (21), thereby obtaining a temperature difference ∆T between the temperature T1 of the washing water and the target temperature T; wherein ∆T=T-T1; Using a pressure measuring module to measure the voltage applied to the washing machine to obtain a voltage effective value Vac; The control module calculates the time adjustment value t according to the values ​​of ∆T and Vac; The control module obtains the running time t1 of the washing machine according to the time trimming value t and the preset time t0 of the washing machine; wherein t1=t0+t.

2. The washing machine according to claim 1, wherein The washing machine further comprises: A water collecting box (5) is provided with a water collecting tank (51) therein, the water collecting tank (51) being in communication with the washing chamber (11) so that the fluid in the external pipeline flows into the washing chamber (11) after passing through the water collecting tank (51); the temperature sensing component (21) is provided on the inner wall of the water collecting tank (51).

3. The washing machine according to claim 2, characterized in that The washing tub (1) comprises: Outer cylinder (101); An inner cylinder (102), the inner cylinder (102) is located inside the outer cylinder (101), the washing chamber (11) is located inside the inner cylinder (102), and an installation space (103) is provided between the inner cylinder (102) and the outer cylinder (101); the water collecting box (5) is located in the installation space (103).

4. The washing machine according to claim 3, characterized in that The water collecting box (5) is connected to the outer wall of the inner cylinder (102); and / or, The water collecting tank (51) is located below the washing chamber (11); and / or, A heating component (52) for heating the washing water is provided on the inner wall of the water collecting tank (51).

5. A calculation method for calculating the running time t1 of a washing machine, characterized in that: The calculation method is applicable to the washing machine according to any one of claims 1 to 4.

6. The calculation method according to claim 5, characterized in that The method of introducing washing water into the washing chamber (11) comprises: A water supply duration s is set in the control module, and the control module controls the external pipeline to supply washing water for s time into the washing machine.

7. The calculation method according to claim 5, characterized in that: The voltage effective value V ac The methods include: Measure the bus voltage V bus , using the formula V ac =V bus / , calculate the effective value of the voltage V ac .

8. The calculation method according to claim 5, characterized in that The control module is based on ∆T and V ac Methods for calculating the value of include: According to the effective value of the voltage V ac , using the formula P1=V² ac / R, the heating power P1 of the washing machine is obtained; and then the time adjustment value t is obtained according to the heating power P1 of the washing machine; wherein R is the resistance value of the heating component (52) of the washing machine.

9. The calculation method according to claim 8, characterized in that: The method for obtaining the time trimming value t according to the heating power P1 of the washing machine includes: A deviation ∆P between the actual heating power and the rated power P2 of the heating component (52) is obtained based on the heating power P1 of the washing machine; wherein ∆P=P1-P2; The time adjustment value t is obtained using the formula t=(∆T-α) / β∆P; wherein α and β are parameters, and the values ​​of α and β are obtained based on experiments.

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