CN102409517A - Drum-type washing machine - Google Patents

Abstract

The invention discloses a drum-type washing machine, which comprises a circulating water connecting hose, a drainage connecting hose, a drum, a water tank, and a suction section connecting hose, and also includes a draining and circulating water integrated pump, and the draining and circulating water integrated pump is located in the Under the water tank, it is connected to it through the connecting hose of the suction section; the integrated drainage circulating water pump sends the washing water back to the storage bucket through the circulating water connecting hose; the integrated drainage circulating water pump discharges the washing water through the drainage connecting hose water. The integrated draining and circulating water pump of the present invention integrates the functions of draining and circulating water, has a simple structure, is convenient to process, greatly saves installation space, and more effectively reduces the manufacturing cost and energy consumption of the washing machine pump.

Description

front load washing machine

technical field

The invention relates to a drum type washing machine.

Background technique

Drum-type washing machines are widely used due to their advantages of high washing efficiency and low damage rate to clothes. The washing process usually includes washing, rinsing and dehydration procedures. As the main accessory of the drum type washing machine, the washing machine pump has important functions in each process of washing. Divided by function, washing machines are currently equipped with two types of pumps, namely drain pumps and circulating water pumps. The function of the drain pump is to discharge the washing water generated during washing, rinsing and dehydration from the tub to the outside of the machine. The circulating water pump pumps out the washing water in the water tank and then presses it into the water tank to realize the forced circulation of the washing water. For washing machines with electric heating, the circulating water pump can enhance the convective heat transfer rate and improve the electric heating efficiency.

Present washing machine usually adopts two pumps to finish above-mentioned draining and circulating water process. Chinese patent document CN02121103.5 provides a "Drainage Device and Using Method of Drum Type Washing Machine", the drainage device includes a drainage pump connected to one side of the pump body, a drain pipe connected to the drainage pump, and a A circulation pump and a circulation pipe connected between the circulation pump and the tub. The device makes full use of the detergent remaining in the pump connection pipe during the laundry process, thereby achieving the effect of saving detergent. Although the device uses the same suction section, two pumps with almost the same specifications are still used to complete the two functions, which takes up a lot of space and energy consumption, and the manufacturing cost is relatively high, and when one pump is running, it will be affected by the other. If the pump is disturbed, backflow will occur in the drain pipe or circulation pipe, which will affect the performance of the pump.

To sum up, in order to solve the existing problems, it is extremely necessary to design a drum-type washing machine so that its drainage and circulating water power device has the functions of drainage and circulating water at the same time.

Contents of the invention

The object of the present invention is to provide a drum-type washing machine with a simple structure, which adopts an integrated pump for draining and circulating water, reduces manufacturing cost and occupies less space.

The technical solution for realizing the purpose of the present invention is: a drum type washing machine, comprising a circulating water connecting hose, a drain connecting hose, a drum, a water tub, and a suction section connecting hose, and also includes a drain circulating water integrated pump, the drain circulating water The integrated water pump is located under the water tank and is connected to it through the connecting hose of the suction section; the integrated drainage and circulating water pump sends the washing water back to the storage tank through the connecting hose of the circulating water; the integrated drainage and circulating water pump passes the drainage Connect the hose to drain the wash water.

The drainage circulating water integrated pump includes a straight pipe suction section, an annular pressurized water chamber, a centrifugal impeller, a circulating water pipe, a circulating water pipe check valve, a circulating water connecting pipe, a drain pipe, a drain pipe check valve, a drain connecting pipe and a direct current Brushless motor, the straight pipe-shaped suction section and DC brushless motor are respectively fixed at both ends of the annular pressurized water chamber, the straight pipe-shaped suction section communicates with the annular pressurized water chamber, and the motor shaft of the DC brushless motor is connected to the ring-shaped pressurized water chamber. The centrifugal impeller inside the water chamber is fixedly connected; the circulating water pipe and the drain pipe are respectively fixed on both sides of the annular pressurized water chamber and communicated with it; the one-way valve of the circulating water pipe is connected between the circulating water pipe and the circulating water connecting pipe The drain pipe check valve is connected between the drain pipe and the drain connecting pipe; the straight pipe-shaped suction section, the circulating water connecting pipe and the drain connecting pipe are respectively connected to the suction section, the circulating water connecting hose and the drainage pipe. Connect the hose connections.

The straight pipe-shaped suction section, the annular pressurized water chamber, the circulating water pipe and the drain pipe are made of plastic material and are integrally injection-molded.

The one-way valve of the circulating water pipe is threadedly connected with the circulating water pipe and the circulating water connecting pipe.

The one-way valve of the drain pipe is threadedly connected with the drain pipe and the drain connecting pipe.

The present invention has positive effects: (1) The drainage and circulating water integrated pump of the present invention integrates drainage and circulating water functions, has a simple structure, is convenient to process, greatly saves installation space, and more effectively reduces the manufacturing cost and cost of the washing machine pump. energy consumption.

(2) The present invention utilizes the controllability of the steering of the DC brushless motor to press the washing water from different pressure outlets through the positive and negative rotation of the centrifugal impeller, thereby realizing the selectivity of the pump drainage and circulating water functions. The one-way valve of the water pipe and the one-way valve of the drain pipe effectively prevent the backflow of the discharge water and the circulating water.

(3) The straight pipe-shaped suction section, annular pressurized water chamber, circulating water pipe and drain pipe of the present invention are made of plastic material and injection molded into one body. This structure is simple and stable, effectively saving manufacturing costs and reducing the complexity of assembly .

(4) Between the circulating water pipe check valve of the present invention and the circulating water pipe and the circulating water connection pipe, between the drain pipe check valve and the drain pipe and the drain connecting pipe, screw connections are used, and this connection is stable and can play a role in sealing effect, prevent water leakage.

Description of drawings

In order to make the content of the present invention easier to understand clearly, the present invention will be described in further detail below according to specific embodiments in conjunction with the accompanying drawings, wherein

Fig. 1 is a schematic diagram of the installation position and connection state of the drainage circulating water integrated pump of the present invention;

Fig. 2 is a schematic cross-sectional view of the intermediate shaft of the drainage and circulating water integrated pump of the present invention.

FIG. 3 is a schematic cross-sectional view along line A-A of FIG. 2 .

FIG. 4 is a schematic cross-sectional view along line B-B of FIG. 2 .

The labels in the accompanying drawings are:

Straight pipe suction section 1, annular pressurized water chamber 2, centrifugal impeller 3, circulating water pipe 4, circulating water pipe check valve 5, circulating water connecting pipe 6, drain pipe 7, drain pipe check valve 8, drain connecting pipe 9, DC brushless motor 10, drainage circulating water integrated pump 11, circulating water connection hose 12, drainage connection hose 13, drum 14, water bucket 15, suction section connection hose 16.

Detailed ways

(Example 1)

Referring to Fig. 1 to Fig. 4, this embodiment includes an integrated drainage circulating water pump 11, a circulating water connection hose 12, a drainage connection hose 13, a drum 14, a bucket 15 and a suction section connection hose 16.

Drainage circulating water integrated pump 11 is located below the water tank 15 and is connected to it through the suction section connecting hose 16; the drainage circulating water integrated pump 11 sends the washing water back to the water tank 15 through the circulating water connecting hose 12; the drainage circulating water The integral pump 11 discharges washing water through a drain connection hose 13 . Drainage circulating water integrated pump 11 includes straight pipe suction section 1, annular pressurized water chamber 2, centrifugal impeller 3, circulating water pipe 4, circulating water pipe check valve 5, circulating water connecting pipe 6, drain pipe 7, drain pipe check valve 8. Drain connecting pipe 9 and DC brushless motor 10, straight pipe suction section 1 and DC brushless motor 10 are respectively fixed at both ends of annular pressure water chamber 2, straight pipe suction section 1 communicates with annular pressure water chamber 2 , the motor shaft of the DC brushless motor 10 is fixedly connected to the centrifugal impeller 3 located inside the annular pressurized water chamber 2; the circulating water pipe 4 and the drain pipe 7 are respectively fixed on both sides of the annular pressurized water chamber 2 and communicated with it; the circulating water pipe The one-way valve 5 is threaded between the circulating water pipe 4 and the circulating water connecting pipe 6; the drain pipe check valve 8 is threaded between the drain pipe 7 and the draining connecting pipe 9; the straight pipe suction section 1, the circulating water connecting pipe 6 and the drain connecting pipe 9 are respectively connected with the suction section connecting hose 16, the circulating water connecting hose 12 and the drain connecting hose 13. Straight pipe-shaped suction section 1, annular pressurized water chamber 2, circulating water pipe 4 and drain pipe 7 are made of plastic material and are integrally injection molded.

Utilizing the controllability of the steering of the brushless DC motor 10, the washing water is pressed out from different pressure outlets through the positive and negative rotation of the centrifugal impeller 3, so as to realize the selectivity of the functions of pump drainage and circulating water. After the impeller 3 rotates, a negative pressure is formed in the suction section 1, and the washing water in the suction bucket 15 enters the pump body. If the washing machine issues a drainage command, the steering of the DC brushless motor 10 is controlled to make the impeller 3 rotate forward, and the washing water is pressed into the drain pipe 7 through the pressurized water chamber 2, passes through the drain connecting pipe 9, and finally is discharged by the drain connecting hose 13. The circulating water pipe check valve 5 arranged between the circulating water pipe 4 and the circulating water connecting pipe 6 prevents the circulating water from flowing backward. If the washing machine issues a circulating water command, the impeller 3 reverses, and the washing water is pressed into the circulating water pipe 4, passes through the circulating water connecting pipe 6, and finally flows into the water tub 15 through the circulating water connecting hose 12, and is located at the drain pipe 7 and the drain. The drain pipe check valve 8 between the connecting pipes 9 prevents the backflow of the drain water. Successfully realized the integration of drainage pump and circulating water pump.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A drum type washing machine, comprising a circulating water connection hose (12), a drain connection hose (13), a drum (14), a water tub (15) and a suction section connection hose (16), characterized in that: It also includes an integrated drainage circulating water pump (11), the integrated drainage circulating water pump (11) is located under the water tank (15), and is connected to it through the suction section connecting hose (16); the integrated drainage circulating water The pump (11) sends the washing water back to the water tank (15) through the circulating water connecting hose (12); the integrated drainage circulating water pump (11) discharges the washing water through the draining connecting hose (13). 2. The drum-type washing machine according to claim 1, characterized in that: the drainage and circulating water integrated pump (11) includes a straight pipe suction section (1), an annular pressurized water chamber (2), a centrifugal impeller (3) , circulating water pipe (4), circulating water pipe check valve (5), circulating water connecting pipe (6), drain pipe (7), drain pipe check valve (8), drain connecting pipe (9) and DC brushless motor (10), the straight pipe-shaped suction section (1) and the DC brushless motor (10) are respectively fixed at the two ends of the annular pressure water chamber (2), and the straight pipe-shaped suction section (1) and the annular pressure water chamber ( 2) Communication, the motor shaft of the DC brushless motor (10) is fixedly connected to the centrifugal impeller (3) located inside the annular pressure water chamber (2); the circulating water pipe (4) and the drain pipe (7) are respectively fixed in the annular The two sides of the pressurized water chamber (2) are communicated with it; the circulating water pipe check valve (5) is connected between the circulating water pipe (4) and the circulating water connecting pipe (6); the drain pipe check valve (8) Connected between the drain pipe (7) and the drain connecting pipe (9); the straight pipe-shaped suction section (1), the circulating water connecting pipe (6) and the drain connecting pipe (9) are respectively connected with the suction section Hose (16), circulating water connection hose (12) and drainage connection hose (13) are connected. 3. The drum-type washing machine according to claim 2, characterized in that: the straight pipe-shaped suction section (1), annular pressurized water chamber (2), circulating water pipe (4) and drain pipe (7) are made of plastic , injection molded into one. 4. The drum-type washing machine according to claim 3, characterized in that: the circulating water pipe check valve (5), the circulating water pipe (4) and the circulating water connecting pipe (6) are connected by threads. 5. The drum-type washing machine according to claim 4, characterized in that: the drain pipe check valve (8) is connected with the drain pipe (7) and the drain connecting pipe (9) by threads.

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