JPH04135286U - Mixed fluid supply device - Google Patents

Abstract

(57) [Summary] [Purpose] A mixed liquid supply device with multiple liquid supply ports,
To connect only one location so that liquid can be supplied, and to have a structure that prevents backflow from leaking from that connection port even if other liquid supply connection ports are not connected to piping. [Structure] A wall surface facing the wall surface 14a of the decompression chamber 14 that is shared with the conduit A6a and includes a conduit A6a provided on the side opposite to the discharge port side of the mixing box 15, and a decompression chamber 14 formed adjacent to the conduit A6a. The portion 14b includes a conduit B7a connected at least horizontally upward to the conduit A6a and perpendicular to the conduit A6a, and a solenoid valve provided at the tip of each conduit, so that liquid can be supplied to the mixer 12. Conduit B
A conduit B7 was provided through a vacuum chamber 14 to prevent backflow to 7a.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea was developed to improve a mixing supply device that mixes and supplies water and hot water to washing machines, etc. It is related to

0002

[Conventional technology]

The one that mixes water and hot water and supplies it to the water supply pipe to the washing tank was developed in 1982-64. As shown in Publication No. 480, the water supply conduit and hot water supply conduit are connected in parallel to the mixing box. In most cases, water and hot water were mixed and supplied by connecting to a water tank.

0003 However, if a washing machine equipped with a mixed liquid supply device is installed in a place that only has a water supply device. In some cases, connect only one supply faucet without connecting both supply faucets and the connection port with a connection hose. If a connection hose is connected and used, the water pressure inside the mixed liquid supply device may be high and the hose may not be connected. Water flows backward into the hot water supply pipe on the other side, and leaks outside the machine from the solenoid valve connection port. Therefore Be sure to connect connection hoses to both connection ports and faucets, or connect water to the unused side of the supply device. I had to install a washing machine by plugging the plug connection.

0004

[Problem that the idea aims to solve]

Even if the connection hose is connected only between the water supply connection port and the water supply faucet, To provide a mixed fluid supply device that does not cause water to leak from a connection port.

[0005]

[Means to solve the problem]

This idea is used in fluid supply devices that mix fluids supplied from multiple conduits. , a conduit A connected to the mixing box, and a conduit A formed adjacent to the conduit A, one end of which is connected to the mixing box. a decompression chamber that opens into the coupling box and is closed at the other end; Connect conduit B upward so that the center line of conduit A and the center line of conduit B are at right angles. and the opening cross-sectional area of the decompression chamber is larger than the opening cross-sectional area of the conduit B. The pressure is then reduced in a vacuum chamber.

[0006]

[Effect]

In other words, connect the connection hose only to the water faucet side to the connection port of conduit A of the mixed liquid supply device. Even if water is supplied, the water flowing back from the mixing box to the conduit B side will be depressurized in the decompression chamber. . Therefore, a hot water supply solenoid valve with a valve body configuration with low check performance is connected to the tip of conduit B on the conduit B side. Even if the valve is connected continuously, water will not leak from the connection port of the hot water supply solenoid valve because the pressing force on the valve body is weak.

[0007]

【Example】

Examples of this invention will be explained below based on the drawings. It is not limited.

[0008] 1 is the machine frame of a fully automatic washing machine, and various washing mechanisms such as a dehydration/washing tub and a motor are installed inside. It is. 2 is a polypropylene top plate placed and fixed on the upper end of the machine frame 1; A top lid 3 that covers a clothes slot is attached to the center so that it can be opened and closed. 4 is the top surface A control box is formed by bulging the rear of the plate 2, and 5 is the control box. A mixed liquid supply device 6 attached to the back side of the device is formed on the mixed liquid supply device 5. A water supply solenoid valve 7 connected to the conduit A6a with a hose 6b is connected to the mixed liquid supply device 5. A hot water solenoid valve connected to the formed conduit B7a with a hose, 8 a water tap, 9 a hot water tap , 10 is a water supply hose that connects the water supply electromagnetic valve 6 and the water supply faucet 9, and 11 is the water supply power supply This is a hot water hose that connects the magnetic valve 7 and the hot water tap 9.

[0009] Reference numeral 12 denotes a mixer constituting the mixed liquid supply device 5; The rectifier pin 13 is provided, and the conduit A6a is provided to protrude outward. The conduit A6a and the decompression chamber 14 are integrally formed adjacent to each other. 7a is the decompression chamber 1 A conduit B integrally molded into the wall 14 of the decompression chamber adjacent to the conduit A6a. on the wall surface portion 14b facing A, at least above the horizontal direction with respect to the conduit A6a. It is formed in the direction.

0010 The area of the opening 14C provided in the decompression chamber 14 is the cross-sectional area of the opening of the conduit B. The water pressure supplied into the mixed liquid supply device 5 is larger than that of the previous one. The pressure is once reduced in the pressure reduction chamber 14, and then the pressure becomes low and flows back to the conduit B side. Also, before The center line Y of the conduit B is formed in a direction perpendicular to the center line X of the conduit A. There is.

[0011] 15 is a mixing device whose lower part is open in the front part of the central lower surface of the control box 4. A cutout hole 16 for assembling the mixer 12 in the box, and a cutout hole 16 for assembling the mixer 12. A plurality of openings 17 are provided for attachment. 18 has each conduit protruding from the mixer 12; A plurality of protrusions protruding from the side formed by the molding engage with and attach to the opening 17. . 19 is a discharge port for discharging the mixed liquid supplied to the mixed liquid supply device 5; be.

0012 The operation will be explained based on such a configuration.

[0013] When water is supplied only from the conduit A6a, the water is supplied by the rectifying pin 13 of the mixer 12. When the water is rectified and injected from the discharge port 19, the mixed liquid supply device 5 Water pressure is applied inside and flows into the opening 14C of the decompression chamber 14. this opening 14C is larger than the diameter of the conduit B7a, so the pressure is temporarily reduced in this part, and then , bend the center line Y of the conduit B7a perpendicularly to the center line X of the conduit A6a. As a result, the inflow resistance increases and the pressure is reduced in this area as well, eventually causing the flow to flow into conduit B7a. The pressure of the incoming water is weakened. Therefore, it is connected to this conduit B7a. Water is difficult to leak from the connection port of the solenoid valve 7.

[0014] In addition, in the embodiment, the wall portion 14b to which the conduit B7a is connected is inclined; It was confirmed that it may be provided parallel to the wall surface 14a of the decompression chamber. In addition, conduit A6 If the pressure of the liquid supplied to a is high, for example 20 kg/cm2 or more, , when the pocket portion 20 is provided on the back side of the mixer 12 in the decompression chamber 14, the mixer The inflow pressure that flows backward from 12 to the decompression chamber 14 rebounds as shown by arrow A, so the opening The pressure of the water flowing back into the conduit B7a is further reduced by the water flowing back from the section 14C. weakens.

[0015]

[Effect of the idea]

Since the present invention is configured as described above, it achieves the following effects. Even if the water supply is connected only to the hydrant from conduit A, the supplied water will flow backwards to conduit B. This prevents water from leaking outside the aircraft from the hot water connection port.

[Brief explanation of drawings]

[Fig. 1] A-A in Fig. 2 showing the mixed liquid supply device of the present invention.
Arrow sectional view.

FIG. 2 is a partially cutaway front view showing the mixed liquid supply device.

FIG. 3 is a side sectional view showing the mixed liquid supply device.

FIG. 4 is a rear perspective view of the washing machine with the mixed liquid supply device attached.

[Explanation of symbols]

5 Fluid supply device 6a Conduit A 7a Conduit B 14 Decompression chamber 14a Wall surface 14b Wall section 15 Mixing box 19 Discharge port

Claims (1)

[Scope of utility model registration request] 1. A fluid supply device that mixes fluids supplied from a plurality of conduits, including a conduit A connected to a mixing box, and a conduit A formed adjacent to the conduit A with one end opening into the mixing box and the other end. a decompression chamber in which the decompression chamber is closed, a conduit B is connected obliquely upward to the wall of the decompression chamber, and the center line of the conduit A and the center line of the conduit B are substantially perpendicular to each other; A mixed fluid supply device in which the opening cross-sectional area of the decompression chamber is larger than the opening cross-sectional area of the conduit B, and a solenoid valve is connected to the tip of the conduit B.