CN211723053U - Washing waste heat recovery device and cover-type dish washing machine with same - Google Patents

Abstract

The invention discloses a washing waste heat recovery device and a cover-uncovering type dish washing machine with the same.A control panel is arranged on the front side of a top cover of an upper cover; the top of the main body is vertically and movably connected with an upper cover, a spray water tank, a main washing water tank and a spray arm assembly are arranged in the main body, a liquid medicine distribution pump is arranged in the main body, and the liquid medicine distribution pump is connected with the spray water tank; waste heat recovery case sets up in main part one side, the waste water inlet tube passes through the delivery port intercommunication of pipeline and main wash water tank, water outlet pipe mouth and spray water tank intercommunication, the top cap through the upper shield top covers the complete machine, better pinning heat, possess simultaneously waterproofly, carminative effect, go into the spray water tank with the liquid medicine pump through the liquid medicine dispensing pump, rationally distribute the liquid medicine use amount, avoid the liquid medicine to use the waste excessively and that cause, and improve the temperature of washing water purification through waste heat recovery case, improve the thermal conversion of washing back waste water, reduce complete machine heating power.

Description

Washing waste heat recovery device and cover-type dish washing machine with same

Technical Field

The utility model relates to a commercial dish washer field, in particular to washing waste heat recovery device and have its formula dish washer of taking off lid.

Background

The existing cover-uncovering type dish-washing machine can generate a large amount of waste hot water in the washing process and directly discharge the waste hot water, so that the heat loss is caused, and the energy conservation and the environmental protection are not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a washing waste heat recovery device can.

The utility model also provides a take off formula of covering dish washer of having above-mentioned washing waste heat recovery device.

According to the utility model discloses a washing waste heat recovery device of first aspect embodiment includes:

the top of the main box body is covered with a main box cover body, two concave positions are arranged at the top of the side wall of one side of the main box body, and a wastewater inlet pipe is arranged at the bottom of the main box body; the heat exchange coil is detachably arranged in the main box body, a water inlet pipe orifice and a water outlet pipe orifice which are positioned at the top are arranged on the heat exchange coil, and the water inlet pipe orifice and the water outlet pipe orifice are respectively matched with the two concave positions.

According to the utility model discloses washing waste heat recovery device has following beneficial effect at least:

in leading to the main tank with washing terminal waste heat waste water through the waste water inlet tube, the washing water carries out the heat exchange with waste heat waste water in getting into the heat exchange coil pipe through the mouth of pipe of intaking, makes washing water temperature improve, effectively promotes heat utilization rate, reduces the energy consumption, and the heat exchange coil pipe can be pulled out from the main tank body simultaneously, is favorable to wasing the main tank body inner chamber.

According to some embodiments of the utility model, two all be equipped with the joint on the concave position, two the joint respectively with the mouth of pipe of intaking the mouth of pipe of water outlet connects.

According to some embodiments of the utility model, the coil pipe support is equipped with respectively at heat exchange coil pipe both ends, the support screw is equipped with to the coil pipe support bottom.

According to some embodiments of the utility model, the overflow pipe is equipped with in the main tank inner chamber, the delivery port of overflow pipe is located heat exchange coil pipe top.

According to the second aspect of the utility model, the cover-uncovering type dish-washing machine is provided with an upper cover, a top cover is arranged on the top of the upper cover, and a control panel is arranged on the front side of the top cover; the top of the main body is vertically and movably connected with the upper cover, a spray water tank, a main washing water tank and a spray arm assembly are arranged in the main body, the spray water tank is connected with the spray arm assembly through a spray water pump, the main washing water tank is positioned at the bottom of the spray arm assembly, and a circulating water outlet of the main washing water tank is connected with the spray arm assembly through the main washing water pump; the liquid medicine distribution pump is arranged in the main body and is connected with the spray water tank; the waste heat recovery box is arranged on one side of the main body and adopts any one of the washing waste heat recovery devices, the waste water inlet pipe is communicated with the water outlet of the main washing water tank through a pipeline, and the water outlet pipe is communicated with the spraying water tank.

According to the utility model discloses lid-lifting formula dish washer has following beneficial effect at least:

the top cap through the upper shield top covers the complete machine, and better pinning heat possesses waterproof, carminative effect simultaneously, goes into the shower header through the liquid medicine dispensing pump with the liquid medicine pump, and the waste that the liquid medicine used excessively and caused is avoided to the liquid medicine use amount of rationally distributing to improve the temperature of washing water purification through waste heat recovery case, improve the thermal conversion of waste water after the washing, reduce complete machine heating power.

According to the utility model discloses a some implement, long gas collecting box is equipped with to spray tank one side, long gas collecting box with the spray tank inner chamber communicates with each other, be equipped with on the spray tank with the outlet pipe that sprays that spray pump connects, the drain pipe is equipped with to the spray tank bottom, the solenoid valve is equipped with on the drain pipe.

According to the utility model discloses a some implement, main part rear portion both sides are equipped with the side backplate, two be equipped with between the side backplate and stride across the U-shaped pull rod of upper shield, the connecting plate is equipped with to U-shaped pull rod both sides, the connecting plate upper end with the U-shaped pull rod rotates to be connected, the connecting plate lower extreme is fixed in on the upper shield curb plate.

According to some implementations of the present invention, the upper and lower portions of the side back plate are respectively provided with an upper fixing plate and a lower fixing plate, the upper fixing plate is provided with a rotating seat, the rotating seat is straddled by a rotating lock plate, the rotating lock plate is provided with an irregular round hole for passing through the end of the U-shaped pull rod, the rotating lock plate is provided with a hook plate, the hook plate is provided with a tension spring, the bottom of the tension spring is provided with the pull rod, and the pull rod is fixed on the lower fixing plate; first guide rail spare is equipped with on the side backplate, be equipped with on the upper shield curb plate inner wall with first guide rail spare complex second guide rail spare, first guide rail spare is from last to being equipped with first gyro wheel, V-arrangement guide rail down in proper order, second guide rail spare from last to be equipped with down in proper order with first gyro wheel complex fall V-arrangement guide rail, with V-arrangement guide rail complex second gyro wheel.

According to some implementations of the present invention, the side of the main wash tank is connected to a water collection plate located below the spray arm assembly, the water collection plate being located at the top of the main body inner chamber; the bottom of the spray water tank is provided with a drain pipe, and the drain pipe is provided with an electromagnetic valve.

According to some implementations of the present invention, the spray arm assembly is divided into an upper spray arm and a lower spray arm, and the main wash arm assembly is divided into an upper main wash arm mounted above the upper spray arm and a lower main wash arm mounted below the lower spray arm; the bottom parts of the lower spray arm and the lower main wash arm are provided with a three-way pipe, a first pipe orifice of the three-way pipe is communicated with a main wash water pump through a pipeline, a second pipe orifice of the three-way pipe is provided with a horizontal communicating pipe, a third pipe orifice of the three-way pipe is communicated with the lower main wash arm, a first spray pipe is arranged in the inner cavity of the three-way pipe, the water inlet end of the first spray pipe extends out of the side wall of the three-way pipe and is communicated with the spray water pump, and the water outlet end of the first spray pipe is positioned in the third pipe orifice of the three-way pipe and is communicated with the lower spray arm; the other end of the horizontal communicating pipe is provided with a lower right-angle elbow, a second spraying pipe is arranged in the inner cavity of the lower right-angle elbow, the water inlet end of the second spraying pipe extends out of the side wall of the lower right-angle elbow and is communicated with the spray water pump, the lower right-angle elbow is provided with the right-angle communicating pipe, a right-angle pipe communicated with the water outlet end of the second spraying pipe is arranged in the right-angle communicating pipe, the other end of the right-angle communicating pipe is provided with an upper right-angle elbow, the upper right-angle elbow is communicated with the upper main washing arm, a third spraying pipe communicated with the right-angle pipe is arranged in the upper right-angle elbow, and the third spraying.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a lid-opening dishwasher according to an embodiment of the present invention;

FIG. 2 is an exploded view of the lid-lift dishwasher shown in FIG. 1;

FIG. 3 is a schematic rear view of the lid-lift dishwasher of FIG. 1;

fig. 4 is a schematic view of an inner cavity of the washing waste heat recovery apparatus shown in fig. 1;

fig. 5 is a schematic view of a main tank of the washing waste heat recovery apparatus shown in fig. 1;

FIG. 6 is a first schematic view of a spray arm assembly and a cleaning arm assembly of the lid-opening type dishwasher shown in FIG. 1;

FIG. 7 is a diagram II illustrating a combined state of a spray arm assembly and a cleaning arm assembly of the lid-uncovering dishwasher shown in FIG. 1;

FIG. 8 is a cross-sectional view of the spray arm assembly and the wash arm assembly of the lid-opening dishwasher shown in FIG. 1;

FIG. 9 is a schematic cross-sectional view of the tee shown in FIG. 1;

FIG. 10 is a schematic cross-sectional view of the lower quarter bend shown in FIG. 1;

FIG. 11 is a schematic cross-sectional view of the upper quarter bend shown in FIG. 1;

FIG. 12 is a schematic view of the spray tank of the lid-lift dishwasher shown in FIG. 1;

FIG. 13 is a perspective view of the tee of the lid-lid dishwasher of FIG. 1;

FIG. 14 is a schematic view of the combination of a first rail member and a second rail member of the lid-lift dishwasher shown in FIG. 1;

FIG. 15 is a schematic view of a first rail member of the lid-lift dishwasher shown in FIG. 1;

FIG. 16 is a schematic view of a second track member of the lid-lift dishwasher of FIG. 1;

FIG. 17 is an enlarged schematic view of A shown in FIG. 3;

FIG. 18 is a schematic view of a swing lock plate of the lid-lift dishwasher shown in FIG. 17;

FIG. 19 is a schematic top view of the lid-lift dishwasher of FIG. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 4 to 5, a washing waste heat recovery apparatus, includes a main tank 100, a heat exchange coil 200,

the top of the main box body 100 is covered with a main box cover body 300, the top of the side wall of one side of the main box body 100 is provided with two concave positions 110, and the bottom of the main box body 100 is provided with a wastewater inlet pipe 120; the heat exchange coil 200 is detachably arranged in the main box body 100, a water inlet pipe orifice 210 and a water outlet pipe orifice 220 are arranged on the heat exchange coil 200 and positioned at the top, and the water inlet pipe orifice 210 and the water outlet pipe orifice 220 are respectively matched with the two concave positions 110; in letting in the terminal waste heat waste water of washing through waste water inlet tube 120 in main tank 100, the washing water purification gets into heat exchange coil 200 through water inlet pipe mouth 210 and carries out the heat exchange with waste heat waste water, makes the washing water temperature improve, effectively promotes heat utilization, reduces the energy consumption, and heat exchange coil 200 can be pulled out from main tank 100 simultaneously, is favorable to wasing the inner chamber of main tank 100.

In order to connect with the external water path conveniently, the two concave positions 110 are both provided with connectors 111, and the two connectors 111 are respectively connected with the water inlet pipe orifice 210 and the water outlet pipe orifice 220.

The coil frame 230 is installed at both ends of the heat exchanging coil 200, the heat exchanging coil 200 is fixed in position in the main box 100 by the coil frame 230, the support screw 231 is installed at the bottom of the coil frame 230, the bottom of the coil frame 230 is leveled by rotating the support screw 231, and the height of the heat exchanging coil 200 in the main box 100 can be adjusted.

The overflow pipe 130 is installed in the inner cavity of the main tank 100, and the water outlet of the overflow pipe 130 is located above the heat exchange coil 200, so that the heat exchange coil 200 is always immersed in the high-temperature washing wastewater, and the washing wastewater is prevented from overflowing from the inner cavity of the main tank 100.

Referring to fig. 1 to 2, a lid-lifting type dishwasher according to a second aspect of the present invention includes an upper housing 400, a top cover 410 mounted on the top of the upper housing 400, and a control panel 420 provided on the front side of the top cover 410; the top of the main body 500 is vertically and movably connected with the upper cover 400, a spray water tank 510, a main wash water tank 520 and a spray arm assembly 530 are arranged in the main body 500, the spray water tank 510 is connected with the spray arm assembly 530 through a spray water pump 540, the main wash water tank 520 is positioned at the bottom of the spray arm assembly 530, and a circulating water outlet 521 of the main wash water tank 520 is connected with the spray arm assembly 530 through a main wash water pump 580; a liquid medicine dispensing pump 600, the liquid medicine dispensing pump 600 being installed in the main body 500, the liquid medicine dispensing pump 600 being connected to the spray water tank 510; the waste heat recovery tank 1-1, the waste heat recovery tank 1-1 is arranged at one side of the main body 500, the waste heat recovery tank 1-1 adopts the above washing waste heat recovery device, the waste water inlet pipe 120 is communicated with the water outlet of the main washing water tank 520 through a pipeline, and the water outlet pipe 220 is communicated with the spray water tank 510; the whole machine is covered by the top cover 410 at the top of the upper cover 400, heat is better locked, meanwhile, the waterproof and exhaust effects are achieved, liquid medicine is pumped into the spray water tank 510 through the liquid medicine distribution pump 600, the usage amount of the liquid medicine is reasonably distributed, waste caused by excessive use of the liquid medicine is avoided, the water temperature of washing purified water is improved through the waste heat recovery tank 1-1, the heat conversion of waste water after washing is improved, and the heating power of the whole machine is reduced.

Referring to fig. 12, a heating pipe is installed in a spray water tank 510, washing purified water is heated by the heating pipe, in order to discharge steam generated during heating, a long gas collecting box 511 is installed at one side of the spray water tank 510, the long gas collecting box 511 is communicated with an inner cavity of the spray water tank 510, and meanwhile, the height of the long gas collecting box 511 is increased, so that the phenomenon of capillarity is avoided, and hot water overflow is avoided; the spray water tank 510 is provided with a spray water outlet pipe 514 connected with the spray water pump 540, the bottom of the spray water tank 510 is provided with a drain pipe 512, the drain pipe 512 is provided with an electromagnetic valve 513, and the drain pipe 512 is controlled by the electromagnetic valve 513 to automatically drain water from the spray water tank 510.

Referring to fig. 3, 14-18, in order to facilitate the upper cover 400 to be opened upwards from the top of the main body 500, side back plates 501 are arranged at two sides of the rear part of the main body 500, a U-shaped pull rod 550 spanning the upper cover 400 is arranged between the two side back plates 501, connecting plates 560 are arranged at two sides of the U-shaped pull rod 550, the upper ends of the connecting plates 560 are rotatably connected with the U-shaped pull rod 550, and the lower ends of the connecting plates 560 are fixed on the side plates of the upper cover 400; the U-shaped pull rod 550 is pulled upward, so that the U-shaped pull rod 550 pulls the upper cover 400 upward through the connection plate 560.

In order to reduce the force when the upper cover 400 is opened and avoid the situation that the upper cover 400 falls down by itself and injures a user after the upper cover 400 is opened, an upper fixing plate 541 and a lower fixing plate 542 are respectively arranged at the upper part and the lower part of the side back plate 501, a rotating seat 543 is arranged on the upper fixing plate 541, a rotating lock plate 544 is arranged on the rotating seat 543 in a spanning manner, an irregular round hole 5441 for penetrating through the end part of the U-shaped pull rod 550 is arranged on the rotating lock plate 544, a hook plate 545 is arranged on the rotating lock plate 544, a tension spring 546 is arranged on the hook plate 545, a pull rod 547 is arranged at the bottom of the tension spring 546, and the pull rod 547 is; when the upper cover 400 is put down, the end part of the U-shaped pull rod 550 exerts upward pulling force on the spring through the hook plate 545, when the upper cover 400 is pulled up, the acting force acting on the spring is eliminated along with the upward movement of the U-shaped pull rod 550, and because the spring is restored by the elastic force, the end part of the U-shaped pull rod 550 generates downward pulling force through the hook plate 545, so that the force required by the U-shaped pull rod 550 when the U-shaped pull rod 550 is pulled up is reduced, and the aim of saving labor is fulfilled; meanwhile, when the U-shaped pull rod 550 is pulled up, the irregular round hole 5441 on the rotation lock plate 544 blocks the port of the U-shaped pull rod 550, thereby preventing the upper cover 400 from falling down and causing injury.

For further improvement, the smoothness of the upper cover 400 during opening or closing is achieved by mounting a first guide rail member 548 on the side back plate 501, mounting a second guide rail member 430 matched with the first guide rail member 548 on the inner wall of the side plate of the upper cover 400, sequentially mounting a first roller 5481 and a V-shaped guide rail 5482 on the first guide rail member 548 from top to bottom, and sequentially mounting an inverted V-shaped guide rail 431 matched with the first roller 5481 and a second roller 432 matched with the V-shaped guide rail 5482 on the second guide rail member 430 from top to bottom.

Referring to fig. 19, in order to conveniently recover the washed wastewater, a water collection plate 522 positioned below the spray arm assembly 530 is connected to a side of the main wash tank 520, the water collection plate 522 is positioned at the top of the inner cavity of the main body 500, the generated wastewater flows into the main wash tank 520 through the water collection plate 522, a second heating body can be installed in the main wash tank 520 to ensure the constancy of the temperature of the spray water, and a filter can be installed at a circulation water outlet 521 of the main wash tank 520 to prevent food residues from blocking the spray arm assembly 530.

Referring to fig. 6-11 and 13, the spray arm assembly 530 is divided into an upper spray arm 531 and a lower spray arm 532, and the main wash arm assembly 590 is divided into an upper main wash arm 591 installed above the upper spray arm 531 and a lower main wash arm 592 installed below the lower spray arm 532; the bottom parts of the lower spray arm 532 and the lower main wash arm 592 are provided with a three-way pipe 700, a first pipe orifice of the three-way pipe 700 is communicated with a main wash water pump 580 through a pipeline, a second pipe orifice of the three-way pipe 700 is provided with a horizontal communicating pipe 800, a third pipe orifice of the three-way pipe 700 is communicated with the lower main wash arm 592, a first spray pipe 710 is arranged in the inner cavity of the three-way pipe 700, the water inlet end of the first spray pipe 710 extends out of the side wall of the three-way pipe 700 and is communicated with the spray water pump 540, and the water outlet end of the first spray pipe 710 is positioned in the third pipe orifice of the three-way pipe 700; the other end of the horizontal communicating pipe 800 is provided with a lower right-angle elbow 900, the inner cavity of the lower right-angle elbow 900 is provided with a second spraying pipe 910, the water inlet end of the second spraying pipe 910 extends out of the side wall of the lower right-angle elbow 900 to be communicated with a spraying water pump 540, the lower right-angle elbow 900 is provided with a right-angle communicating pipe 1000, the right-angle communicating pipe 1000 is internally provided with a right-angle pipe 1100 communicated with the water outlet end of the second spraying pipe 910, the other end of the right-angle communicating pipe 1000 is provided with an upper right-angle elbow 2000, the upper right-angle elbow 2000 is communicated with an upper main washing arm 591, the upper right-angle elbow 2000 is internally provided with a third spraying pipe 2100 communicated with the right-angle pipe 1100, and the third.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A washing waste heat recovery apparatus, characterized by comprising:

the water tank comprises a main tank body (100), wherein a main tank cover body (300) is covered on the top of the main tank body (100), two concave positions (110) are arranged on the top of the side wall of one side of the main tank body (100), and a wastewater inlet pipe (120) is arranged at the bottom of the main tank body (100);

the heat exchange coil pipe (200) is detachably arranged in the main box body (100), a water inlet pipe orifice (210) and a water outlet pipe orifice (220) which are positioned at the top are arranged on the heat exchange coil pipe (200), and the water inlet pipe orifice (210) and the water outlet pipe orifice (220) are respectively matched with the two concave positions (110).

2. A washing waste heat recovery device according to claim 1, wherein two connectors (111) are mounted on two concave portions (110), and two connectors (111) are respectively connected to the water inlet pipe opening (210) and the water outlet pipe opening (220).

3. A washing waste heat recovery device in accordance with claim 1, wherein said heat exchange coil (200) is provided at both ends with coil holders (230), respectively, and said coil holders (230) are provided at the bottom with support screws (231).

4. A washing waste heat recovery device, as recited in claim 1, wherein an overflow pipe (130) is installed in the inner chamber of said main tank (100), and the outlet of said overflow pipe (130) is located above said heat exchange coil (200).

5. A lid-opening dishwasher, comprising:

the device comprises an upper cover (400), wherein a top cover (410) is arranged at the top of the upper cover (400), and a control plate (420) is arranged on the front side of the top cover (410);

the top of the main body (500) is vertically and movably connected with the upper cover (400), a spray water tank (510), a main wash water tank (520), a spray arm assembly (530) and a main wash arm assembly (590) are arranged in the main body (500), the spray water tank (510) is connected with the spray arm assembly (530) through a spray water pump (540), the main wash water tank (520) is positioned at the bottom of the spray arm assembly (530), and a circulating water outlet (521) of the main wash water tank (520) is connected with the main wash arm assembly (590) through a main wash water pump (580);

the liquid medicine distribution pump (600), the liquid medicine distribution pump (600) is arranged in the main body (500), and the liquid medicine distribution pump (600) is connected with the spray water tank (510);

a waste heat recovery tank (1-1), wherein the waste heat recovery tank (1-1) is disposed at one side of the main body (500), the waste heat recovery tank (1-1) adopts a washing waste heat recovery device as claimed in any one of claims 1 to 4, the waste water inlet pipe (120) is communicated with a water outlet of the main washing water tank (520) through a pipeline, and the water outlet pipe (220) is communicated with the spraying water tank (510).

6. The cover-uncovering type dishwasher of claim 5, characterized in that one side of the spray water tank (510) is provided with a long gas collecting box (511), the long gas collecting box (511) is communicated with the inner cavity of the spray water tank (510), the spray water tank (510) is provided with a spray water outlet pipe (514) connected with the spray water pump (540), the bottom of the spray water tank (510) is provided with a drain pipe (512), and the drain pipe (512) is provided with an electromagnetic valve (513).

7. The lid-uncovering type dishwasher of claim 5, characterized in that, two sides of the rear part of the main body (500) are provided with side back boards (501), a U-shaped pull rod (550) crossing the upper cover (400) is arranged between the two side back boards (501), two sides of the U-shaped pull rod (550) are provided with connecting boards (560), the upper end of the connecting board (560) is rotatably connected with the U-shaped pull rod (550), and the lower end of the connecting board (560) is fixed on the side board of the upper cover (400).

8. The lid-uncovering type dishwasher of claim 7, characterized in that the upper and lower parts of the side back plate (501) are respectively provided with an upper fixing plate (541) and a lower fixing plate (542), the upper fixing plate (541) is provided with a rotating seat (543), the rotating seat (543) is straddled with a rotating lock plate (544), the rotating lock plate (544) is provided with an irregular round hole (5441) for passing through the end of the U-shaped pull rod (550), the rotating lock plate (544) is provided with a hook plate (545), the hook plate (545) is provided with a tension spring (546), the bottom of the tension spring (546) is provided with a pull rod (547), and the pull rod (547) is fixed on the lower fixing plate (542); first guide rail spare (548) are equipped with on side backplate (501), be equipped with on upper shield (400) curb plate inner wall with first guide rail spare (548) complex second guide rail spare (430), first guide rail spare (548) are from last to being equipped with first gyro wheel (5481), V-arrangement guide rail (5482) down in proper order, second guide rail spare (430) from last to be equipped with down in proper order with first gyro wheel (5481) complex down V-arrangement guide rail (431), with V-arrangement guide rail (5482) complex second gyro wheel (432).

9. The lid-uncovering dishwasher of claim 5, characterized in that a water collecting plate (522) is connected to the side of the main wash tank (520) below the spray arm assembly (530), the water collecting plate (522) being located at the top of the inner cavity of the main body (500).

10. The lid-uncovering dishwasher of claim 5, characterized in that the spray arm assembly (530) is divided into an upper spray arm (531) and a lower spray arm (532), the main wash arm assembly (590) is divided into an upper main wash arm (591) arranged above the upper spray arm (531) and a lower main wash arm (592) arranged below the lower spray arm (532); the bottoms of the lower spray arm (532) and the lower main wash arm (592) are provided with a three-way pipe (700), a first pipe orifice of the three-way pipe (700) is communicated with a main wash water pump (580) through a pipeline, a second pipe orifice of the three-way pipe (700) is provided with a horizontal communicating pipe (800), a third pipe orifice of the three-way pipe (700) is communicated with the lower main wash arm (592), a first spray pipe (710) is arranged in the inner cavity of the three-way pipe (700), the water inlet end of the first spray pipe (710) extends out of the side wall of the three-way pipe (700) and is communicated with the spray water pump (540), and the water outlet end of the first spray pipe (710) is positioned in the third pipe orifice of the three-way pipe (700) and is communicated with the lower spray arm (532); the water-saving washing machine is characterized in that a lower right-angle elbow (900) is installed at the other end of the horizontal communicating pipe (800), a second spray pipe (910) is arranged in the inner cavity of the lower right-angle elbow (900), the water inlet end of the second spray pipe (910) extends out of the side wall of the lower right-angle elbow (900) and is communicated with the spray water pump (540), a right-angle communicating pipe (1000) is installed on the lower right-angle elbow (900), a right-angle pipe (1100) communicated with the water outlet end of the second spray pipe (910) is arranged in the right-angle communicating pipe (1000), an upper right-angle elbow (2000) is installed at the other end of the right-angle communicating pipe (1000), the upper right-angle elbow (2000) is communicated with the upper main washing arm (591), a third spray pipe (2100) communicated with the right-angle pipe (1100) is installed in the upper right-angle elbow (2000), and the.

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