JPS61259699A - Dehydrator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a dehydrator that performs centrifugal dehydration of a material to be dehydrated. Washing machines with a built-in washing machine are usually configured to run a spin cycle for a time set on a timer. The required dewatering operation time is determined according to the amount of laundry to be dehydrated, etc., and the timer setting operation is performed based on the determination result.

However, in reality, as mentioned above, it is extremely troublesome to judge the spin-drying operation time according to the length of the laundry, etc. Not only does this have the problem of deteriorating the operability, but also the judgment itself is inaccurate. It is inevitable that it will happen. For this reason, in the past, the actual situation was that the spin-drying time was insufficient, resulting in inadequate spin-drying of the laundry, or conversely, the spin-drying operation was continued unnecessarily for a long time, resulting in a waste of electricity and time. Ta.

[Object of the invention] The present invention has been made in view of the above circumstances, and its purpose is to automatically adjust the dewatering operation time to the optimum time depending on the material to be dehydrated, and to achieve the following. It is an object of the present invention to provide a dewatering machine which can improve operability and has effects such as not causing excessive or insufficient dehydrating operation time.

[Summary of the Invention] In order to achieve the above object, the present invention measures the time required for the rotation speed of the dehydration motor detected by a detection means to reach a predetermined rotation speed, and based on the measurement result, The structure is such that a control means is provided to control the energization time of the motor, and in short, the dewatering operation time is automatically determined by using the characteristics of the dewatering motor that have a predetermined correlation with the material to be dehydrated. This is what I did.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The dehydrator targeted in this example rotates a rotating tub at high speed with a dehydrating motor (indicated by reference numeral 1 in Figure 1), and centrifuges the laundry to be dehydrated in the rotating tub. It is configured to dehydrate. FIG. 3 shows an example of the time change characteristic of the rotation speed of the dewatering motor 1 when dewatering is performed using this type of dehydrator, and as can be understood from FIG. The rotational speed of the dewatering motor 1 has the property of rising gradually at the beginning of the dewatering operation, then rising relatively steeply, and becoming saturated at a steady rotational speed due to R#, and the time required to reach the predetermined rotational speed N1. The time t1 and the time t2 required to reach the substantially saturated rotational speed N2 become longer as the number of washed IV items W stored in the rotating tank increases. At this time, the above time 1. ．． 12 are in a constant ratio relationship, and this is shown in FIG. That is, in this FIG. 4, the horizontal axis shows the laundry bin in the rotating tub, and the vertical axis shows the elapsed time after the start of the dehydration operation, and between time t1 and time t2, t2= at, +b...-(1) (However, a
, b is a constant). FIG. 5 shows the relationship between the rotational speed of the dewatering motor 1 and the dewatering rate of the laundry in the rotating tub. As can be understood from FIG. 5, the water rate of the laundry changes approximately linearly until the rotational speed of the dewatering motor 1 changes from N1 to N2. A practically sufficient dehydration rate can be obtained when the rotational speed of the motor 1 reaches N2.

In other words, the time t1 until the dewatering motor 1 reaches the predetermined rotation speed N1 after the start of the dehydration operation and the time t2 until the dehydration motor 1 reaches the rotation speed N2 are not affected by the amount of laundry in the rotating tub. There is a predetermined relationship (the relationship in formula (1) above), and when the rotation speed of the dewatering motor 1 reaches N2 corresponding to the above time t2, the laundry in the rotating tub has reached a state sufficient for practical use. It is dehydrated. Therefore, the time required for the dehydration operation can be predicted based on the time t1 until the dehydration motor 1 reaches the predetermined rotation speed N1, regardless of the amount of laundry in the rotating tub. In this embodiment, the dewatering operation time is determined by utilizing the characteristics of the dewatering motor 1, and the specific configuration of this embodiment will be described below.

In FIG. 1, 2 is a detection means for detecting the rotation speed of the dewatering motor 1, and 3 is a control means for controlling the weak water motor 1 based on the rotation speed detected by the detection means 2. It consists of each component described below. That is, in this control means 3, 4 is a reference rotation speed setting unit for setting the predetermined rotation speed N1, 5 is a timer counter that outputs a signal corresponding to the elapsed time after the start of the dehydration operation, and 6 is briefly described. A calculation section-17 that performs calculations is connected to the detection means 2. In addition to controlling the operations of the timer counter 5 and the calculation section 6, these detection means 2. This is a control circuit that controls energization/disconnection of the dewatering motor 1 based on each output from the timer counter 5 and the calculation unit 6. FIG. 2 shows a flow chart of the control contents of the control means 3, which will be explained below.

That is, in the timer reset step (a) after the dehydration operation start command is issued, the timer counter 5 is initialized to 1, and in the next power frequency determination step (b), the power frequency is set to 50 l.
-I Z or 60H2 is determined, and in the subsequent constant change step (c), the constant a used in the calculation of the calculation unit 6'C- is changed to a value according to the above determination result. . Next, in the energization start step (d), the dewatering motor 1 starts to be energized, and at the same time the dewatering motor 1 starts to energize, and the process starts from the ri/go master 1 to step BO).
The operation of the timer counter 5 is started at . In the subsequent judgment step (step), it is determined whether the actual rotation speed N of the dewatering motor 1 is equal to or higher than the predetermined rotation speed N1 set by the reference rotation speed setting section 4, and the judgment result is " Y1 YoS
”, the process moves to the next time storage step (1-) for the first time. In this time storage step (g), the count contents of the timer counter 5, in other words, the time t required for the dehydration motor 1 to reach the predetermined rotation speed N1 after the start of the dehydration operation is stored in the calculation unit 6. In the subsequent calculation step (H), the calculation unit 6 calculates -I''==a t+b (a, b are constants stored in advance, especially the constant a is the value changed in the constant changing step (c)), and in the next judgment step (s), it is determined whether the count content of the timer counter 5 has become a value corresponding to the calculation result of −F. Only when the judgment result is negative, the process moves to the next energization stop step (nu).Then, this energization stop step (
In step (v), the power supply to the water motor 1 is stopped and the dewatering operation is ended. The constants a and b used in the calculation in the calculation unit 6 are required to correspond to the characteristics of the dewatering motor 1, such as the large serrations of the two-rotation tank.
is determined in advance through experiments or the like for each type of dehydrator.

As described above, according to the configuration of this embodiment, the energization time T to the dehydration motor 1 is based on the time 1- required for the dehydration motor 1 to reach the predetermined rotation speed N1.
It is determined by the same calculation as the formula, and as a result, the above energization time is the time it takes for the Ij52 water motor 1 to reach the rotation speed N2 after the start of dewatering operation, in other words, the laundry in the rotating tub. This corresponds to the time required for the water to be dehydrated to a state sufficient for practical use. In short, according to this embodiment, regardless of the amount of laundry put into the rotary tub, the spin-drying operation can always be ended when spin-drying is completed, and as a result, the user can control the amount of laundry. There is no need to judge the dewatering operation time accordingly, and there is no risk of causing problems as in the past due to incorrect judgment.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without departing from the gist, such as the control means may be configured by a micro combi coater. It is something that can be done.

[Effects of the Invention] According to the present invention, as is clear from the above explanation, the operation time of the moonshine water can be automatically adjusted to the optimum time according to the camellia to be dehydrated, and the operability is improved. This has the excellent effect that the dehydration operation time will not be too long or insufficient, resulting in insufficient dehydration or waste of power and time.

=9-

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. FIG. 1 is a block diagram of the electrical configuration, FIG. 2 is a flowchart 1-1 for explaining the functions of the control means, and FIG. A characteristic diagram showing the relationship between the rotation speed of the dewatering motor, Figure 4 is a characteristic diagram showing the relationship between the amount of material to be dehydrated and the stand-up time of the dehydrating motor, and Figure 5 is a characteristic diagram showing the relationship between the rotation speed of the dehydrating motor and the rotation speed of the dehydrating motor. FIG. 2 is a characteristic diagram showing the relationship between the number of dehydrated materials and the monthly water content of the dehydrated material. In the figure, 1 is a dehydration motor, 2 is a detection means, 3 is a control means, 4 is a reference rotation speed setting section, 5 is a timer counter, 6 is a calculation section, and 7 is a control circuit. Applicant: Toshiba Corporation Figure 2 Figure 3I21 4121 Condolences Figure 5

Claims (1)

[Scope of Claims] 1. A detection means for detecting the rotation speed of the dehydration motor, and a detection means for measuring the time required until the rotation speed detected by the detection means reaches a predetermined rotation speed, and based on the measurement result, the dehydration 1. A dehydrator comprising: a control means for controlling the energization time of the motor. 2. The control means calculates T=at+b( based on the time t required for the rotation speed detected by the detection means to reach the predetermined rotation speed
a and b are constants), and after the dehydration motor is energized for a time corresponding to the calculation result value T, the dehydration motor is turned off, and the constant a is adjusted according to the power frequency.
The dehydrator according to claim 1, wherein the dehydrator is configured to change the value of .