Dish washing machine control method and dish washing machine

Abstract

The invention relates to the technical field of dish-washing machines, in particular to a control method of a dish-washing machine and the dish-washing machine, and aims to solve the problem that in the prior art, the dish-washing machine has large temperature control deviation on washing water. In order to achieve the purpose, the control method comprises the steps that a set temperature value is obtained; when the heating device is started, a real-time temperature value is obtained; under the condition that the real-time temperature value is smaller than the set temperature value and the difference value between the set temperature value and the real-time temperature value is smaller than a first judgment temperature value, the duration value from the time when the heating device is turned on this time to the time when the heating device is turned off last time is obtained and recorded as a first duration value; comparing the size relationship between the first duration value and the first judgment duration value; and selectively controlling the heating device to be turned off based on the comparison result. According to the control method, when the real-time temperature value does not reach the set temperature value, whether the heating device is controlled to be closed or not is judged, so that the final temperature of the washing water is not too high or too low, and the problem that the washing effect is affected due to large washing water temperature control deviation can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and in particular provides a control method for a dishwasher and a dishwasher. Background Art

[0002] As people's living standards improve, dishwashers have gradually entered more and more households, bringing convenience to people's lives. Dishwashers are devices that use washing water to spray and wash tableware. The washing water needs to be heated to a certain temperature before washing the tableware to achieve a better washing effect. If the water temperature is low, it is easy to cause the tableware to be not cleaned clean, affecting the hygiene and health of users using the tableware. If the water temperature is high, it is easy to damage the internal components of the dishwasher or affect the quality of the tableware.

[0003] Existing dishwashers have a certain temperature deviation when controlling the temperature of washing water, which has a certain impact on the washing effect and reduces the user experience.

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

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem of large deviation in temperature control of washing water by dishwashers in the prior art.

[0006] In a first aspect, the present invention provides a control method for a dishwasher, the dishwasher comprising: a heating device, the heating device being used to heat washing water; a temperature detection device, the temperature detection device being used to detect a real-time temperature value of the washing water; the control method comprising: obtaining a set temperature value; when the heating device is turned on, obtaining the real-time temperature value; when the real-time temperature value is less than the set temperature value and the difference between the set temperature value and the real-time temperature value is less than a first judgment temperature value, obtaining a time value from the time the heating device is turned on this time to the time the heating device is turned off last time, recorded as a first time value; comparing the first time value with the first judgment time value; and based on the comparison result, selectively controlling the heating device to turn off.

[0007] When the above technical solution is adopted, when the real-time temperature value does not reach the set temperature value, and the difference between the set temperature value and the real-time temperature value is less than the first judgment temperature value, the time value from the time the heating device is turned on to the time the heating device was turned off last time is compared with the first judgment time value, so as to decide whether to control the heating device to be turned off. After the heating device is turned off, the washing water is heated to the set temperature by the ambient temperature around the heating device and the residual temperature of the heating device. The final temperature of the washing water will not be too high or too low, which can effectively avoid the problem of large deviation in the temperature control of the washing water, which affects the washing effect.

[0008] In a specific implementation of the above-mentioned dishwasher control method, the step of "selectively controlling the heating device to turn off based on the comparison result" further includes: controlling the heating device to turn off when the first time value is less than or equal to the first determination time value.

[0009] When the above technical solution is adopted, when the first duration value is less than or equal to the first judgment duration value, the time from the last time the heating device was turned on to the last time the heating device was turned off is shorter, and the ambient temperature around the heating device has not dropped to a very low level. Under the combined effect of the ambient temperature and the residual temperature of the heating device, the washing water temperature can continue to rise to the set temperature even when the heating device is turned off, thereby avoiding the problem of excessive water temperature caused by turning off the heating device after the washing water temperature reaches the set temperature.

[0010] In a specific implementation of the control method of the above-mentioned dishwasher, before, simultaneously or after the step of "obtaining the duration value from the time the heating device is turned on this time to the time the heating device is turned off last time", the control method also includes: obtaining the duration value of the heating device being turned on this time, recorded as the second duration value; before, simultaneously or after the step of "comparing the size relationship between the first duration value and the first determination duration value", the control method also includes: comparing the size relationship between the second duration value and the second determination duration value; the step of "selectively controlling the heating device to turn off based on the comparison result" further includes: controlling the heating device to turn off when the first duration value is less than or equal to the first determination duration value and / or the second duration value is greater than the second determination duration value.

[0011] When adopting the above technical scheme, in addition to comparing the size relationship between the first duration value and the first judgment duration value, the size relationship between the second duration value and the second judgment duration value is also compared, and the influence of the two factors on the washing water temperature is comprehensively considered; when the duration value of the heating device being turned on this time is greater than the second judgment duration value, the ambient temperature around the heating device and the heating device itself have risen to a certain temperature. After controlling the heating device to be turned off, the washing water can still continue to rise to the set temperature under the joint action of the ambient temperature and the residual temperature of the heating device.

[0012] In a specific implementation of the control method of the above-mentioned dishwasher, before, simultaneously or after the step of "obtaining the duration value from the time the heating device is turned on this time to the time the heating device was turned off last time", the control method also includes: recording the real-time temperature value at this time as a first temperature value; the step of "selectively controlling the heating device to turn off based on the comparison result" further includes: when the first duration value is greater than the first determination duration value and the second duration value is less than or equal to the second determination duration value, comparing the difference between the set temperature value and the real-time temperature value with a preset percentage of the difference between the set temperature value and the first temperature value; when the difference between the set temperature value and the real-time temperature value is less than or equal to the preset percentage of the difference between the set temperature value and the first temperature value, controlling the heating device to turn off.

[0013] When the above technical solution is adopted, when the ambient temperature around the heating device is not high enough and the heating time of the heating device is not long enough, the heating continues. Because in this case, after the heating device is turned off, the ambient temperature and the residual temperature are relatively low, it is necessary to control the heating device to be turned off when the difference between the set temperature value and the real-time temperature value is less than or equal to a preset percentage of the difference between the set temperature value and the first temperature value. Otherwise, the washing water cannot be heated to the set temperature under the action of the ambient temperature and the residual temperature of the heating device.

[0014] In a specific implementation of the control method of the above-mentioned dishwasher, after the step of "controlling the heating device to turn off", the control method further includes: comparing the magnitude relationship between the real-time temperature value and the set temperature value; and based on the comparison result, selectively controlling the heating program to end.

[0015] When the above technical solution is adopted, in order to ensure that the washing water temperature reaches the preset temperature value, after the heating device is controlled to be turned off, the real-time temperature value and the set temperature value are compared to determine whether the heating program can be ended.

[0016] In a specific implementation of the control method of the above dishwasher, the step of "selectively controlling the heating program to end based on the comparison result" further includes: controlling the heating program to end when the real-time temperature value is greater than or equal to the set temperature value.

[0017] When adopting the above technical solution, after the heating device is turned off, the temperature of the washing water rises to a value greater than or equal to the set temperature under the combined effect of the ambient temperature and the residual temperature of the heating device. At this time, it can be determined that the heating device does not need to be turned on again, and the heating program can be controlled to end.

[0018] In a specific implementation of the control method of the above-mentioned dishwasher, the step of "selectively controlling the heating program to end based on the comparison result" further includes: when the real-time temperature value is less than the set temperature value, obtaining the duration value of the heating device being turned off, and recording it as the n-1th off duration value; after the step of "obtaining the duration value of the heating device being turned off, and recording it as the n-1th off duration value", the control method further includes: when the n-1th off duration value is equal to the n-1th calculated duration value, recording the real-time temperature value at this time as the nth temperature value; controlling the heating device to turn on; when the difference between the set temperature value and the real-time temperature value is less than or equal to a preset percentage of the difference between the set temperature value and the nth temperature value, controlling the heating device to turn off; after the step of "controlling the heating device to turn off", repeatedly executing the step of "comparing the magnitude relationship between the real-time temperature value and the set temperature value; based on the comparison result, selectively controlling the heating program to end"; wherein n=2, 3..., and the value of n increases in sequence with the number of repeated executions.

[0019] When the above technical solution is adopted, the heating device is turned on or off again according to the real-time temperature value, and is adjusted repeatedly to achieve fine-tuning of the washing water temperature, ultimately reaching the preset temperature value and controlling the heating program to end, thereby making temperature control more precise and enhancing the washing effect.

[0020] In a specific implementation of the control method of the dishwasher, while the step of "obtaining the time length between the time when the heating device is turned on this time and the time when the heating device is turned off last time" is performed, the control method further includes: recording the real-time temperature value at this time as the first temperature value; the n-1th time length value T is calculated. n-1 =[1+(X n-1 -X1) / (X m -X1)]×30; where T n-1 The unit is seconds, X m is the set temperature value, X1, X2…X n-1 are the first temperature value, the second temperature value...the n-1th temperature value, T1, T2...T n-1 They are respectively the first calculation duration value, the second calculation duration value, ... the n-1th calculation duration value.

[0021] When the above technical solution is adopted, a method for calculating the n-1th calculation duration value is obtained.

[0022] In a specific implementation of the control method for the dishwasher, the first determination temperature value is 4-6°C.

[0023] When the above technical solution is adopted, when the first judgment temperature value is set within the range of 4 to 6°C, if the heating device is turned off, the washing water can still be heated to the set temperature under the influence of the ambient temperature and the residual temperature of the heating device.

[0024] In a second aspect, the present invention further provides a dishwasher, comprising: a heating device, the heating device being used to heat washing water; a temperature detection device, the temperature detection device being used to detect the real-time temperature value of the washing water; a processor; a memory, the memory being suitable for storing a plurality of program codes, the program codes being suitable for being loaded and run by the processor to execute the control method of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a flow chart of the main steps of the control method of the dishwasher of the present invention;

[0027] Figure 2 It is a detailed step flow chart of an implementation method of the dishwasher control method of the present invention. DETAILED DESCRIPTION

[0028] Some embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0029] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the relevant devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the ordinal numbers "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, it should be noted that in the description of the present invention, although the various steps of the control method of the present invention are described in this application in a specific order, these orders are not restrictive. Without departing from the basic principles of the present invention, those skilled in the art can perform the steps in a different order.

[0032] Based on the problem pointed out in the background technology that the temperature control deviation of washing water in dishwashers in the prior art is large, the present invention provides a control method and a dishwasher for a dishwasher, aiming to achieve the purpose of precise control of the washing water temperature by judging whether to control the heating device to be turned off by combining the real-time temperature value and the time value from the last time the heating device was turned on to the last time the heating device was turned off.

[0033] The dishwasher of the present invention comprises: a heating device, which is used to heat washing water; a temperature detection device, which is used to detect the real-time temperature value of the washing water; a processor; and a memory, which is suitable for storing multiple program codes, and the program codes are suitable for being loaded and run by the processor to execute the control method of the dishwasher.

[0034] Optionally, the heating device can be a heating tube or a heating plate; the temperature detection device can be a temperature sensor, and the heating device and the temperature detection device are both arranged in a water tank for placing washing water or in a heating chamber for heating washing water. The processor can be a central processing unit, or other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.; the memory can be an internal storage unit of the dishwasher, such as a hard disk or memory, etc.; the memory can also be an external storage device of the dishwasher, for example, a plug-in hard disk, a smart memory card, a secure digital card, a flash memory card, etc. equipped on the dishwasher; the memory can also include both the internal storage unit and the external storage unit of the dishwasher. In addition, the dishwasher can include multiple memories and multiple processors, each processor performs different steps respectively, and the multiple processors can be processors deployed on the same device or processors deployed on different devices. For example, the multiple processors can be processors on the dishwasher and processors on the cloud server respectively.

[0035] See first Figure 1 , which shows the main steps of the control method of the dishwasher of the present invention, which specifically includes the following steps:

[0036] Step S100: Obtaining a set temperature value.

[0037] Step S101: when the heating device is turned on, obtain the real-time temperature value.

[0038] Step S102: When the real-time temperature value is less than the set temperature value and the difference between the set temperature value and the real-time temperature value is less than the first determination temperature value, the duration from the last time the heating device was turned on to the last time the heating device was turned off is obtained and recorded as the first duration value.

[0039] Step S103: Compare the first duration value with the first determination duration value.

[0040] Step S104: Based on the comparison result, selectively controlling the heating device to be turned off.

[0041] Among them, the real-time temperature value is the real-time changing temperature value obtained by the temperature detection device; the first judgment temperature value is 4-6°C, preferably 5°C; the first judgment time value is 110-130 seconds, preferably 120 seconds.

[0042] Specifically, in step S104, the step of "selectively controlling the heating device to be turned off based on the comparison result" further includes: controlling the heating device to be turned off when the first time value is less than or equal to the first determination time value.

[0043] When the real-time temperature value is less than the set temperature value, and the difference between the set temperature value and the real-time temperature value is less than the first judgment temperature value, the comparison between the duration of the current heating device being turned on and the last time the heating device was turned off and the first judgment duration value is started, so as to decide whether to control the heating device to be turned off; since the washing water temperature has not reached the set temperature when the real-time temperature value is less than the set temperature value, early judgment can avoid the occurrence of excessive water temperature. At the same time, when the difference between the set temperature value and the real-time temperature value is less than the first judgment temperature value, the temperature difference between the washing water temperature and the set temperature value is small. If the heating device is turned off, the washing water temperature can be turned off by adding the temperature when the first duration value is less than or equal to the first judgment duration value. The combined effect of the ambient temperature and residual temperature around the heating device raises the water temperature to the set temperature, which can avoid the occurrence of water temperature being too low; when the first duration value is less than or equal to the first judgment duration value, the time from the last time the heating device was turned on to the last time the heating device was turned off is short, and the ambient temperature around the heating device has not dropped to a very low level. If the heating device is turned off, the residual temperature of the heating device will not be quickly consumed and reduced due to the low ambient temperature, and the washing water can continue to rise to the set temperature under the combined effect of the ambient temperature and the residual temperature of the heating device; under the combined influence of the above factors, the final temperature of the washing water will not be too high or too low, which can effectively avoid the problem of large deviation in washing water temperature control affecting the washing effect.

[0044] See below Figure 2 , which shows a detailed step flow of an implementation method of the dishwasher control method of the present invention, specifically comprising the following steps:

[0045] Step S200: Obtaining a set temperature value.

[0046] Step S201: When the heating device is turned on, obtain the real-time temperature value.

[0047] Step S202: When the real-time temperature value is less than the set temperature value and the difference between the set temperature value and the real-time temperature value is less than the first determination temperature value, the duration from the last time the heating device was turned on to the last time the heating device was turned off is obtained and recorded as the first duration value.

[0048] Step S203: Obtain the duration value of the heating device being turned on this time, which is recorded as the second duration value.

[0049] Step S204: Record the real-time temperature value at this time as the first temperature value.

[0050] Step S205: Compare the first duration value with the first determination duration value, and compare the second duration value with the second determination duration value. If the first duration value is less than or equal to the first determination duration value and / or the second duration value is greater than the second determination duration value, execute step S206; if the first duration value is greater than the first determination duration value and the second duration value is less than or equal to the second determination duration value, execute step S207.

[0051] Step S206: Control the heating device to turn off.

[0052] Step S207: Compare the difference between the set temperature value and the real-time temperature value with the preset percentage of the difference between the set temperature value and the first temperature value. After step S207, execute step S208.

[0053] Step S208: When the difference between the set temperature value and the real-time temperature value is less than or equal to a preset percentage of the difference between the set temperature value and the first temperature value, the heating device is controlled to be turned off. After step S208, step S209 is executed.

[0054] Step S209: Compare the real-time temperature value and the set temperature value. If the real-time temperature value is greater than or equal to the set temperature value, execute step S210; if the real-time temperature value is less than the set temperature value, execute step S211.

[0055] Step S210: Control the heating process to end.

[0056] Step S211: Obtain the duration of the heating device being turned off, and record it as the (n-1)th duration of the heating device being turned off. After step S211, execute S212.

[0057] Step S212: When the n-1th closing duration value is equal to the n-1th calculation duration value, the real-time temperature value at this time is recorded as the nth temperature value.

[0058] Step S213: Control the heating device to turn on.

[0059] Step S214: When the difference between the set temperature value and the real-time temperature value is less than or equal to a preset percentage of the difference between the set temperature value and the nth temperature value, the heating device is controlled to be turned off. After step S214, step S209 is executed.

[0060] The second determination time length value is 14 to 16 seconds, and the preset percentage is 62% to 72%, preferably 67%.

[0061] It should be noted that both step S203 and step S204 are performed when "the real-time temperature value is less than the set temperature value and the difference between the set temperature value and the real-time temperature value is less than the first determination temperature value" in step S202.

[0062] Specifically, the n-1th calculation duration value T n-1 =[1+(X n-1 -X1) / (X m -X1)]×30; where T n-1 The unit is seconds, X m is the set temperature value, X1, X2…X n-1 are the first temperature value, the second temperature value...the n-1th temperature value, T1, T2...T n-1 are respectively the first calculation duration value, the second calculation duration value, ... the n-1th calculation duration value, n = 2, 3, ..., the value of n increases with the number of repeated executions. For example, the first calculation duration value T1 = [1 + (X1-X1) / (X m -X1)]×30=30, in seconds, where X1 is the first temperature value, and the second calculation time value T2=[1+(X2-X1) / (X m -X1)]×30, the unit is seconds, where X1 is the first temperature value, X2 is the second temperature value, and so on.

[0063] The repeated execution of step S209 to step S214 is used to achieve fine-tuning of the washing water temperature, ultimately making the washing water reach a preset temperature value and controlling the heating program to end; by fine-tuning the washing water temperature, precise control of the washing water temperature is achieved to avoid the water temperature being too high or too low, which affects the washing effect.

[0064] It should be noted that the above-mentioned embodiments are only used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art can adjust the above-mentioned embodiments so that the present invention can be applied to more specific application scenarios.

[0065] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A method for controlling a dishwasher, characterized in that: The dishwasher comprises: A heating device, the heating device is used to heat washing water; A temperature detection device, the temperature detection device is used to detect the real-time temperature value of the washing water; The control method comprises: Get the set temperature value; When the heating device is turned on, obtaining the real-time temperature value; When the real-time temperature value is less than the set temperature value and the difference between the set temperature value and the real-time temperature value is less than the first determination temperature value, obtaining the duration value from the time when the heating device is turned on this time to the time when the heating device is turned off last time, and recording it as the first duration value; Comparing the first duration value with the first determination duration value; Based on the comparison result, the heating device is selectively controlled to be turned off.

2. The control method of the dishwasher according to claim 1, characterized in that: The step of "selectively controlling the heating device to be turned off based on the comparison result" further includes: When the first time duration value is less than or equal to the first determination time duration value, the heating device is controlled to be turned off.

3. The control method of the dishwasher according to claim 1, characterized in that: Before, simultaneously or after the step of "obtaining the time length between the time when the heating device is turned on this time and the time when the heating device is turned off last time", the control method further includes: Obtain the duration of the heating device being turned on this time, recorded as the second duration value; Before, simultaneously with or after the step of "comparing the magnitude relationship between the first duration value and the first determination duration value", the control method further includes: Comparing the second duration value with the second determination duration value; The step of "selectively controlling the heating device to be turned off based on the comparison result" further includes: When the first time value is less than or equal to the first determination time value and / or the second time value is greater than the second determination time value, the heating device is controlled to be turned off.

4. The control method of the dishwasher according to claim 3, characterized in that: Before, simultaneously or after the step of "obtaining the time length between the time when the heating device is turned on this time and the time when the heating device is turned off last time", the control method further includes: Record the real-time temperature value at this time as the first temperature value; The step of "selectively controlling the heating device to be turned off based on the comparison result" further includes: When the first duration value is greater than the first determination duration value and the second duration value is less than or equal to the second determination duration value, comparing the difference between the set temperature value and the real-time temperature value with a preset percentage of the difference between the set temperature value and the first temperature value; When the difference between the set temperature value and the real-time temperature value is less than or equal to a preset percentage of the difference between the set temperature value and the first temperature value, the heating device is controlled to be turned off.

5. The control method of the dishwasher according to claim 1 or 3, characterized in that: After the step of "controlling the heating device to turn off", the control method further includes: Comparing the real-time temperature value with the set temperature value; Based on the comparison result, the heating process is selectively controlled to end.

6. The control method of the dishwasher according to claim 5, characterized in that: The step of "selectively controlling the heating program to end based on the comparison result" further includes: When the real-time temperature value is greater than or equal to the set temperature value, the heating program is controlled to end.

7. The control method of the dishwasher according to claim 5, characterized in that: The step of "selectively controlling the heating program to end based on the comparison result" further includes: When the real-time temperature value is less than the set temperature value, the duration of the heating device being turned off is obtained, and recorded as the n-1th duration of the heating device being turned off; After the step of "obtaining the duration value of the heating device being turned off, recorded as the n-1th duration value of the heating device being turned off", the control method further includes: When the n-1th closing duration value is equal to the n-1th calculation duration value, the real-time temperature value at this time is recorded as the nth temperature value; Controlling the heating device to turn on; When the difference between the set temperature value and the real-time temperature value is less than or equal to a preset percentage of the difference between the set temperature value and the nth temperature value, controlling the heating device to be turned off; After the step of "controlling the heating device to turn off", the step of "comparing the magnitude relationship between the real-time temperature value and the set temperature value; and selectively controlling the heating program to end based on the comparison result" is repeatedly performed; Wherein, n=2, 3, ..., the value of n increases with the number of times of the repeated execution.

8. The method for controlling a dishwasher according to claim 7, characterized in that: At the same time as the step of "obtaining the time length between the time when the heating device is turned on this time and the time when the heating device was turned off last time", the control method also includes: Record the real-time temperature value at this time as the first temperature value; The n-1th calculation duration value T n-1 =[1+(X n-1 -X1) / (X m -X1)]×30; Among them, T n-1 The unit is seconds, X m is the set temperature value, X1, X2…X n-1 are the first temperature value, the second temperature value...the n-1th temperature value, T1, T2...T n-1 They are respectively the first calculation duration value, the second calculation duration value, ... the n-1th calculation duration value.

9. The control method of the dishwasher according to claim 1, characterized in that: The first determination temperature value is 4-6°C.

10. A dishwasher, characterized in that: The dishwasher comprises: A heating device, the heating device is used to heat washing water; A temperature detection device, the temperature detection device is used to detect the real-time temperature value of the washing water; processor; A memory, wherein the memory is suitable for storing a plurality of program codes, wherein the program codes are suitable for being loaded and run by the processor to execute the control method of the dishwasher according to any one of claims 1 to 9.

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