JPH0321746Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a washing machine, particularly a washing tank.

[Conventional technology]

For example, in a pulsator type washing machine, conventionally,
As shown in FIG. 6, an opening to an overflow chamber (not shown) is formed in the upper part of the side wall of the washing tank 6, which is provided with a pulsator 7 and a drain port 8 at the bottom, and an overflow filter 21 is provided in the opening. A water supply case 4 is disposed above the washing tank 6, and water is poured into the washing tank 6 from a water supply port 2 provided on the top panel 3.

By the way, when washing and rinsing, after pouring water up to a specified water level, the pulsator 7 is rotated to start operation, but at this time, the swirling water flow generated by the rotation of the pulsator 7 generates waves and partially There are parts where the water level exceeds the specified level, and if the water exceeds the water level due to these waves, the overflow filter 21
By discharging water from the tank to the overflow chamber, water is prevented from flowing out of the machine from the edge of the washing tank 6.

[Problem that the invention attempts to solve]

However, when the amount of items to be washed is small, the height of the swirling flow formed by the pulsator becomes large, causing water to scatter upward. However, this water cannot be completely absorbed by the overflow filter, and the water may spill over the top edge of the washing tank and spill out of the machine.

This inconvenience is especially true when rinsing with water,
Alternatively, this problem becomes noticeable when the motor side pulley or pulsator side pulley that was used in a 50Hz power area is used in a 60Hz power area and the pulsator rotational speed increases.

Therefore, conventionally, as a method to weaken the water flow near the water surface, Utility Model Application No. 54-150372, Utility Model Application No. 57-39580,
Utility Model No. 53-4900, Utility Model No. 55-118679, Utility Model No. 118679
Jama plates such as those shown in No. 55-28019 have been proposed, but all of them are vertically shaped and act only as resistance plates, so they cannot resist water flow against waves of normal wave height. Although it can be weakened, if the swirling current is large and the wave height is large, it may not be able to cope with this problem and water may splash out of the aircraft.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
To provide a washing machine which can sufficiently weaken the water flow near the water surface even when the swirling flow is large, prevents water from scattering outside the washing tank, and has a simple structure.

[Means for solving problems]

In order to achieve the above object, the present invention provides a washing machine in which an overflow filter is attached to the opening surface of an overflow corner formed in a washing tank, in which a horizontal protrusion for returning waves is formed at the upper end of the overflow filter, and the horizontal protrusion The gist is that the mountain-shaped vertical portion that is curved and connected from the top forms a substantially T-shaped water flow restraining plate with a steep surface near the top.

[Effect]

According to the present invention, when water waves collide with the water flow suppression plate formed on the overflow filter during washing operation, most of these waves rise upward along the steep surface formed on the vertical part of the water flow suppression plate. It rises and hits the horizontal protrusion at the top for returning waves, makes a U-turn here, and falls towards the center of the washing tank. This falling water flow interferes with the rotating water flow, weakening the water flow near the water surface.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a perspective view showing an overflow filter, which is a main part of the washing machine of the present invention, Fig. 2 is a cross-sectional plan view of the same water flow suppressing plate portion, and Fig. 3 is a plan view of the washing machine of the present invention. Components that are the same as those of the conventional example are given the same reference numerals.

The overall structure of the washing machine of the present invention is similar to the conventional one, and a pulsator 7 and a drain port 8 are provided at the bottom of the washing tank 6, and an overflow filter 1 is provided at the upper part of the side wall.

This overflow filter 1 has a large number of small holes 1 for draining water in the washing tank 6 to an overflow chamber.
1 is perforated and has a knob 12 for adjusting the water level, but in the present invention, a water flow suppressing plate 5 is integrally provided on the upper part of the overflow filter 1.

This water flow suppressing plate 5 has a substantially T-shape in which a horizontal protrusion 5b for returning waves is formed at the upper end of the mountain-shaped vertical part 5a, and the vicinity of the top part 5c of the vertical part 5a is formed into a steep surface 51d. The lower hem slope 5d is formed in an arc shape. The transition portion from the vertical portion 5a to the horizontal protrusion 5b is curved.

In addition, 13 in the figure is a locking protrusion for the washing tank 6;
Reference numeral 4 indicates an engaging claw for engaging the water supply case 4, and reference numeral 15 indicates a lint filter mounting portion.

Next, to explain the operation, to perform washing, move the water level adjustment knob 12 up and down to set the water level, put the items to be washed into the washing tank 6, and then from the water supply port 2 and water supply case 4 into the washing tank. 6 and collect water in the washing tank 6. When the water has accumulated to a specified level, the pulsator 7 is rotated to perform washing or rinsing.

The rotation of the pulsator 7 generates a swirling flow in the washing tank 6, and waves are generated near the water surface that collide with the water flow suppression plate 5. However, if the wave height is not particularly high, as shown in FIG. Most of the waves that hit the mountain-shaped vertical part 5a of the water flow suppression plate 5 are on the base slope 5.
d toward the top 5c, where it changes direction and falls back into the swirling flow.

By the way, for example, when the amount of items to be washed is small and the wave height is large, the water flow suppressing plate 5 as shown in FIG.
The wave that hits the mountain-shaped vertical part 5a is the bottom slope 5d.
and rises upward along the steep surface 51d,
It reaches the horizontal protrusion 5b, where it is prevented from rising any further, is turned vertically, and falls toward the center of the washing tank 6. This results in
This falling water flow interferes with the rotating water flow, weakening the water flow near the water surface and reducing the wave height.

In this way, a large rising water flow is generated by the steep surface 51d, and this is converted into a falling water flow by the horizontal protrusion 5b', and this falling water flow is made to interfere with the rotating water flow to weaken the water flow near the water surface, and also to flow out of the machine. Water that is about to jump out is prevented by a horizontal protrusion 5b for returning waves.

[Effect of idea]

As mentioned above, even when the water flow is particularly large and the wave height is large, the washing machine of the present invention can weaken the water flow by actively generating a falling water flow that interferes with this water flow, thereby preventing water from flowing outside the machine. Prevents water from scattering.

Furthermore, since the water flow suppressing plate is integrally provided on the overflow filter, it is easy to manufacture and inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an overflow filter which is a main part of the washing tank of the washing machine of the present invention, Fig. 2 is a cross-sectional plan view of the water flow suppressing plate portion of the same, Fig. 3 is a plan view of the washing machine of the present invention, 4 is a perspective view of the main parts showing the state of use, FIG. 5 is a perspective view showing the flow of waves, and FIG. 6 is a plan view showing a conventional example. 1... Overflow filter, 11... Small hole, 12... Water level adjustment knob, 13... Locking protrusion, 14... Engaging claw, 15... Lint filter attachment part, 2... Water supply port , 3...Top panel, 4
... Water supply case, 5 ... Water flow suppression plate, 5a ... Chevron vertical part, 5b ... Horizontal protrusion, 5c ... Chevron top, 5d ... Bottom slope, 51d ... Sheer surface, 6
... Washing tank, 7 ... Pulsator, 8 ... Drain port, 21 ... Overflow filter.

Claims (1)

[Scope of utility model registration request] In a washing machine in which an overflow filter is attached to the opening surface of an overflow corner formed in a washing tank, a horizontal protrusion for returning waves is formed at the upper end of the overflow filter, and a chevron-shaped vertical part that curves and connects from the horizontal protrusion has a peak. A washing machine characterized by forming a substantially T-shaped water flow suppressing plate with a steeply erect surface in the vicinity thereof.