JPH0117273Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a washing machine.

(b) Conventional technology Generally, when washing with a washing machine,
As shown in Publication No. 20276, etc., users estimated the quality and quantity of laundry by eye, and set the water level and time based on experience, without taking water temperature into consideration.

However, as is clear from the experimental results shown in Figure 5, the higher the water temperature, the smoother the laundry (cloth) rotates (around the cloth).
If the water level and washing time are set based only on the amount of washing, there will be differences in the washing rate depending on the water temperature, specifically, between summer and winter.

(c) Problems to be solved by the invention This invention attempts to eliminate the difference in cleaning efficiency caused by the difference in water temperature between summer and winter, or between hot and cold water.

(d) Means for solving the problem The present invention provides a washing machine in which a water flow intensity changeover switch selects and sets a plurality of rotation cycles in which the rotation time of the rotor blades is different within a certain period of time. A rotation cycle changing means is provided for changing the length of the rotation time during each of the rotation cycles in conjunction with a select switch.

(E) Effect: That is, the lower the water temperature, the greater the ratio of the rotation time of the rotor during each rotation cycle, thereby uniformly increasing the water flow strength in each rotation cycle.

Furthermore, the above-mentioned operations can be selected and set using a select switch.

(f) Examples Embodiments of the present invention will be described based on the drawings.

In Figures 3 and 4, 1 is the operating section of a two-tub washing machine equipped with a microcomputer 2, 1a is the operating panel attached to the front of the operating section 1, 3 is the power switch, and 4 is the overflow water level adjustment. control lever for 5
Reference numeral 1 indicates a drain button that opens and closes the drain valve, 6 indicates a water fill button that switches the water supply to a washing tank (described later) or a spin-drying tank (not shown), and 7 and 8 display washing and spin-drying times, respectively. digital display,
Numeral 9 is a light emitting diode that indicates the strength of the water flow in the tub during washing, and is labeled with "strong,""standard," and "weak," respectively. 10 to 13 are operation buttons for electrically controlling each process of the washing machine.

Reference numeral 14 denotes a machine frame that supports the operating section 1, and has a washing tub 15 and a dehydration tub (not shown) installed therein. Reference numeral 16 denotes a rotary blade disposed at the bottom of the washing tub 15, which is repeatedly driven by a drive motor in a rotation cycle of clockwise rotation-pause-counterclockwise rotation-pause. 1
7 is a lower water injection channel cover that covers a lower water injection channel (not shown), has a lower water injection port 18, and has a washing tub 15.
Water is injected into the interior from two locations: a lower water inlet 18 and an upper water inlet 19. In addition, 20 is an overflow port filter, 22 is an upper lid of the washing tub 15, 23 is a dehydration lid, 24 is a drain hose, and 25 is a lint filter.

Now, 26 and 27 are select buttons to be selected in summer and winter, or when using hot water and when using cold water, and are used to open and close select switches 28 and 29, respectively.

In other words, select button 2 during winter and when using cold water.
6, a signal is input to the microcomputer 2 as a rotation cycle changing means via the select switch 28, and the microcomputer 2 controls the second drive motor.
As shown in Figure A, the rotary blade 16 is set to be driven in a rotation cycle of 2 seconds of rotation and 1 second of rest.

Then, when the select button 27 is operated in the summer and when hot water is used, the microcomputer 2
A signal is input through the select switch 29, and the microcomputer 2 similarly sets the rotary blade 16 to be driven in a rotation cycle of 1.8 seconds of rotation and 1.2 seconds of rest, as shown in FIG. 2B.

In addition, each rotation cycle mentioned above is when the strength of the water flow is set to "Strong", and when the strength of the water flow is set to "Standard", the time of right and left rotation during each rotation cycle is respectively, compared to times of strong water currents.
It is shortened by 0.2 seconds, and when the strength of the water flow is set to "weak", it is shortened by 0.5 seconds.

In general, the lower the water temperature, the lower the cleaning efficiency and fabric rotation. In addition, the water temperature and the type of fabric differ between summer and winter, and the fabric is thicker in winter than in summer, making it difficult to rotate due to its own weight.

In this embodiment, when the water temperature is thought to be low, such as during winter or when using cold water, by setting the select button 26 in advance, the rotation time of the rotor blade during each rotation cycle of "strong", "standard", and "weak" can be set. Since the length is automatically set to be uniformly long, it fully compensates for the aforementioned decrease in cleaning efficiency and fabric circumference. If you select and set the select buttons 26 and 27 to ``good'' etc., you can then set the water flow and time based on your experience based on the quality and quantity of the laundry without worrying about the water temperature, regardless of the water temperature. Specifically, it is possible to obtain a uniform cleaning rate in both summer and winter.

Furthermore, in terms of structure, it is only necessary to add a switch device, and it is cheaper than one that uses a water temperature sensor.

In addition, if you add select buttons not only for summer and winter but also for spring and autumn, more detailed control is possible.
Furthermore, it can be applied not only to two-tub type washing machines but also to fully automatic washing machines.

(G) Effects of the invention The washing machine of this invention automatically controls the rotation cycle of the rotor blades by selecting the select switch depending on the season and the use of hot or cold water. Differences in cleaning rates can be equalized.

[Brief explanation of drawings]

Figure 1 is a control circuit diagram of the microcomputer using the select switch in the washing machine of the present invention.
Figure 2 is a time chart showing the rotation cycle of the rotor blade. Figure A is a time chart of the rotation cycle used when the water temperature is low, Figure B is a time chart of the rotation cycle used when the water temperature is high, and Figure 3 is a front view of the operation panel. , FIG. 4 is a partially cutaway perspective view of a two-tub type washing machine, and FIG. 5 is a diagram showing the characteristics of cloth surroundings with respect to water temperature. 2...Microcomputer (rotation cycle changing means), 15...Washing tub, 16...Rotary blade, 2
6, 27...Select button, 28, 29...Select switch.

Claims (1)

[Scope of utility model registration request] In a washing machine in which a plurality of rotation cycles in which the rotation times of the rotor blades are varied within a certain period of time are selected and set using a water flow intensity changeover switch, the rotation time during each of the rotation cycles is linked to the selection switch. A washing machine characterized by being provided with a rotation cycle changing means for changing the length of the rotation cycle.