CN217852829U

CN217852829U - Spray arm, water pumping mechanism and cleaning machine

Info

Publication number: CN217852829U
Application number: CN202221538422.0U
Authority: CN
Inventors: 魏本柱
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-11-22
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a spray arm, pump water mechanism and cleaning machine, spray arm include body and roof, the roof locate on the body and with between the body enclose jointly synthetic gas collection chamber that is used for storage gas, the hole for water spraying distributes in the region that corresponds with the gas collection chamber, it has the spout that corresponds the hole for water spraying to open on the roof, just have the clearance that can produce the negative pressure at the rivers injection in-process between hole for water spraying upper end and the spout lower extreme, the edge of roof is provided with downwardly extending's first surrounding edge, and is corresponding, the upper surface of body is provided with the second surrounding edge that upwards extends, first surrounding edge and second surrounding edge dock each other and constitute jointly and enclose the lateral wall that closes out the gas collection chamber, open on this lateral wall and have the air inlet that the air feed gets into in the gas collection chamber. Above-mentioned structure seals the assembly between with roof and the body and moves to between the lateral wall, has reserved more operating space, is convenient for produce and assemble to improve the reliability that the two are connected.

Description

Spray arm, water pumping mechanism and cleaning machine

Technical Field

The utility model relates to a dish washer technical field specifically indicates a spray arm, pump water mechanism and cleaning machine.

Background

At present, the application of the dishwasher in the household kitchen is wider. The prior application CN202023086995.8 of the applicant discloses a spray arm structure, which comprises a body, wherein a flow channel extending along the length direction of the body is arranged in the body, a water inlet communicated with the flow channel is formed in the bottom wall of the body, water spray holes are formed in the top wall and/or the side wall of the body, a top plate is arranged at the top of the body, a gas collection cavity for storing gas is formed by enclosing the bottom wall of the top plate and the top wall of the body together, the water spray holes are distributed in an area corresponding to the gas collection cavity, a nozzle corresponding to the water spray holes is formed in the top plate, a gap capable of generating negative pressure in the water flow spraying process is formed between the upper end of the water spray holes and the lower end of the nozzle, an air inlet communicated with the gas collection cavity is formed in the top and/or the side part of the spray arm, and a water outlet is formed in the top wall of the body to discharge accumulated water in the gas collection cavity in time.

The spraying arm can automatically suck gas, so that bubbles are carried in the sprayed water flow, and the cleaning effect is improved. However, the top plate and the spray arm body are generally fixed by welding, and when the gas collecting cavity is formed, the connecting gap between the top plate and the spray arm body is located at the bottom periphery of the gas collecting cavity, which causes the assembly difficulty of the top plate and the spray arm body to be large, and affects the connection reliability of the top plate and the spray arm body.

Therefore, further improvements are to be made to the current spray arm configuration.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve the first is to prior art's current situation, provides one kind and can improve the spray arm of being connected the reliability between roof and the spray arm body.

The utility model discloses the second technical problem that will solve is the current situation to prior art, provides an use pump water mechanism that has above-mentioned spray arm.

The utility model aims to solve the third technical problem to prior art's current situation, provide an use pump water mechanism cleaning machine that has above-mentioned spray arm.

The utility model provides a technical scheme that at least one above-mentioned technical problem adopted does:

the utility model provides a spray arm, includes body and roof, the runner that extends along body length direction has in the body, open on the body diapire have with the water inlet that the runner is linked together, roof and/or the lateral wall have the hole for water spraying, the roof locate on the body and with the body between enclose jointly and synthesize the gas collection chamber that is used for storage gas, the hole for water spraying distributes in the region that corresponds with the gas collection chamber, it has the spout that corresponds the hole for water spraying to open on the roof, just have between hole for water spraying upper end and the spout lower extreme and can produce the clearance of negative pressure in rivers injection process, the edge of roof is provided with downwardly extending's first surrounding edge, and is corresponding, the upper surface of body is provided with the second surrounding edge that upwardly extends, first surrounding edge and second surrounding edge dock mutually and constitute the lateral wall that encloses jointly and close the gas collection chamber, open on this lateral wall and supply the air inlet in the gas collection chamber.

Preferably, the cross section of the air inlet comprises a first part and a second part which are connected with each other, the first part transversely penetrates through the second peripheral edge and is consistent with the height of the second peripheral edge, and the second part is positioned outside the first part and is gradually inclined downwards from inside to outside to form an outwards expanding structure. The outward-expanding structure is inclined downwards, which is not only beneficial to air intake, but also can prevent water in the environment of the washing cavity from entering the gas-collecting cavity.

Preferably, the inner edge of the second portion is arranged corresponding to the middle of the section of the second skirt, and the outer edge of the second portion is located on the outer surface of the body.

Preferably, the cross section of the air inlet further comprises a third part positioned above the first part, and the third part is gradually inclined upwards from outside to inside to form an inwards-expanding structure. This structure further provides more smooth and easy route for admitting air, avoids water stain invasion to the gas collecting chamber in simultaneously.

Preferably, the outer edge of the third portion is arranged corresponding to the middle of the cross-section of the first skirt, and the inner edge of the third portion is located on the inner surface of the first skirt.

Preferably, the inner edge of the second portion corresponds up and down to the outer edge of the third portion.

Preferably, a water collecting area which is gradually inclined downwards from two ends to the center is formed in the middle of the upper surface of the body, and an overflow port for draining the collected water in the water collecting area is formed in the second surrounding edge. The structure is convenient for draining the collected water in the gas collection cavity.

Preferably, the central portion of the body is wider than the two ends of the body to form a disc-shaped structure in the center, the top plate is a straight strip-shaped structure with the center and the two ends of the top plate having the same width, the top plate covers the body and exposes the two sides of the disc-shaped structure, and the overflow ports are located on the disc-shaped structures on the two sides of the top plate.

Preferably, the top wall of the body is provided with a first nozzle extending upwards from the edge of the water spraying hole, and correspondingly, the top plate is provided with a second nozzle extending axially along the nozzle. The first nozzle and the second nozzle are beneficial to guiding water flow, so that a water column with large spraying force is formed.

Preferably, the first nozzle has a first tapered section and a second tapered section that are sequentially connected along a water flow direction, an inner diameter of the first tapered section gradually decreases along the water flow direction, an inner diameter of the second tapered section gradually increases along the water flow direction, and a taper of the second tapered section is smaller than a taper of the first tapered section. The inner diameter of the second nozzle is larger than that of the upper end of the first nozzle. The first conical section is beneficial to reducing the energy loss of the fluid entering the first nozzle from the flow passage; according to the venturi effect, restricted fluid is when the cross section that overflows through reducing, and the phenomenon that the velocity of flow increases can appear to the fluid, and knows the increase of velocity of flow by bernoulli's law and accompany fluid pressure's reduction to near fluid that flows at a high speed can produce the low pressure, and then produce the adsorption, the utility model discloses a second toper section is intended to realize that the cross-section diminishes and increases the effect that makes the velocity of flow increase again, so that the gas in the gas collecting cavity is inhaled in the rivers through the clearance.

Preferably, the axial length of the second nozzle is 5 to 7mm. The utility model discloses a second nozzle mainly used carries out the gas-liquid mixture, and the size of second nozzle decides the stability of state after the gas-liquid mixture, and the length overlength of second nozzle can cause jet energy loss, undersize can cause the gas-liquid mixture state unstable, and experience proves, adopts above-mentioned length parameter, can obtain the fluid of high-speed and gas-liquid mixture state stability.

Preferably, the length of the gap between the upper end of the water spraying hole and the lower end of the nozzle is 2-5 mm. The gap determines the strength of the jet cavitation capability, namely the amount of air sucked, and the length parameter is adopted to obtain a higher jet cavitation effect proved by experiments.

Preferably, the thickness of the central part of the body is greater than the thickness of the runner parts at the two sides, and the central part of the body is recessed downwards relative to the runner parts at the two sides, so that the spray arm is in a flying swallow shape as a whole, the resistance of the spray arm in the rotating process is reduced, and the movement efficiency is improved.

The utility model provides an use pump water mechanism that has above-mentioned spray arm, includes power unit, impeller subassembly, its characterized in that: the spraying arm is further included, the centrifugal impeller penetrating through the water inlet and located in the spraying arm is arranged on the upper portion of the impeller assembly, the axial-flow impeller located below the water inlet is arranged on the lower portion of the impeller assembly, the power mechanism is arranged below the impeller assembly, and an output shaft of the power mechanism is connected with the impeller assembly.

The utility model provides an use and have above-mentioned pump water mechanism cleaning machine, includes the box, its characterized in that: the water pumping mechanism is arranged at the bottom of the box body and used for pumping out water at the bottom of the box body upwards through the spraying arm. Compared with the prior art, the utility model has the advantages of: the utility model discloses be provided with downwardly extending's first surrounding edge in the edge of roof, be provided with the second surrounding edge that upwards extends at the upper surface of body, first surrounding edge docks each other with the second surrounding edge and constitutes jointly and encloses the lateral wall that closes out the gas collecting cavity, offers the air inlet on this lateral wall, and above-mentioned structure seals the assembly between with roof and the body and moves to between the lateral wall, has reserved more operating space, is convenient for produce and assemble to improve the reliability that the two is connected.

Drawings

Fig. 1 is a schematic structural view of a spray arm according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a drawing showing the first nozzle and the second nozzle according to the embodiment of the present invention;

fig. 6 is a schematic structural view of a water pumping mechanism according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 6, the spray arm a of the present embodiment includes a body 1, a water collecting cavity 16 having a substantially disk shape is provided at a central portion of the body 1, two sides of the water collecting cavity 16 are respectively communicated with a flow channel 11 extending along a length direction of the body 1, a water inlet 12 communicated with the water collecting cavity 16 is provided on a bottom wall of the body 1, a water spraying hole 13 is provided on a top wall, a plurality of water spraying holes 13 are distributed above the flow channel 11, and no water spraying hole is provided above the water collecting cavity 16. 1 top of body is provided with the roof 2 that can enclose synthetic gas collecting cavity 20 jointly with 1 roof of body, and gas collecting cavity 20 is linked together with the outside air, and the hole for water spraying 13 distributes in the region that corresponds with gas collecting cavity 20, is surrounded in gas collecting cavity 20, and it has the spout 21 that corresponds hole for water spraying 13 to open on the roof 2, and has clearance 100 between hole for water spraying 13 upper end and the spout 21 lower extreme.

The thickness of the central part of the spray arm a is larger than the thickness of the runner parts on the two sides, and the central part of the spray arm a is sunken downwards relative to the runner parts on the two sides, so that the resistance of the spray arm in the rotating process is reduced, and the movement efficiency is improved.

The top wall of the body 1 is provided with a first nozzle 14 extending upwards from the edge of the water spraying hole 13, and correspondingly, the top plate 2 is provided with a second nozzle 22 extending along the axial direction of the nozzle 21. The first nozzle 14 and the second nozzle 22 are beneficial to guiding the water flow, so that a water column with large spraying force is formed.

Specifically, the first nozzle 14 has a first tapered section 141 and a second tapered section 142 that are sequentially connected along the water flow direction, the inner diameter of the first tapered section 141 gradually decreases along the water flow direction, the inner diameter of the second tapered section 142 gradually increases along the water flow direction, and the taper of the second tapered section 142 is smaller than the taper of the first tapered section 141. The second nozzle 22 has an inner diameter greater than the inner diameter of the upper end of the first nozzle 14. The first tapered section 141 facilitates reducing energy loss from the fluid flowing into the first nozzle 14; according to the venturi effect, when the restricted fluid passes through the narrowed flow cross section, the flow velocity of the fluid is increased, and the increase of the flow velocity is accompanied by the decrease of the pressure of the fluid, so that a low pressure is generated near the fluid flowing at a high speed, and an adsorption effect is generated, and the second conical section 142 of the embodiment is intended to realize the effects of reducing the cross section and increasing the flow velocity, so that the gas in the gas collecting cavity 20 is sucked into the water flow through the gap 100.

The axial length d1 of the second nozzle 22 is 5 to 7mm. The second nozzle 22 of the present embodiment is mainly used for gas-liquid mixing, the size of the second nozzle 22 determines the stability of the state after gas-liquid mixing, the length of the second nozzle 22 is too long, which causes jet energy loss, and too small, which causes the unstable state of gas-liquid mixing. The length d2 of the gap 100 between the upper end of the water jet hole 13 and the lower end of the nozzle 21 is 2-5 mm. The gap determines the strength of the jet cavitation capability, namely the amount of air sucked, and the length parameter is adopted to obtain a higher jet cavitation effect proved by experiments.

In this embodiment, the edge of roof 2 is provided with downwardly extending's first surrounding edge 01, and is corresponding, and the upper surface of body 1 is provided with the second surrounding edge 02 that upwardly extends, and first surrounding edge 01 docks the back welding each other with second surrounding edge 02 and constitutes jointly and encloses the lateral wall that closes out gas collecting cavity 20, opens the air inlet 154 that supplies the air admission gas collecting cavity 20 on this lateral wall.

The cross section of the air inlet 154 includes a first portion 1541, a second portion 1542 and a third portion 1543 which are connected with each other, the first portion 1541 transversely penetrates the second surrounding edge 02 and corresponds to the height of the second surrounding edge 02, and the second portion 1542 is located outside the first portion 1541 and gradually inclines downwards from inside to outside to form an outwardly expanding structure. The inner edge of the second portion 1542 is arranged in correspondence of the middle of the section of the second skirt 02, the outer edge of the second portion 1542 being located on the outer surface of the body 1. The third portion 1543 is disposed on the first portion 1541, and the third portion 1543 is gradually inclined upward from outside to inside to form an inwardly expanded structure. The outer edge of the third portion 1543 is arranged in correspondence of the middle of the section of the first skirt 01, and the inner edge of the third portion 1543 is located on the inner surface of the first skirt 1541. The corresponding outer structure downward sloping that expands about the outward flange of the inward flange of second part 1542 and third part 1543 is not only favorable to admitting air, can avoid again the washing chamber environment water get into the gas collecting chamber in, the structure that expands further provides more smooth and easy route for admitting air in, avoids water stain invasion to the gas collecting chamber simultaneously.

In the embodiment, the central part of the upper surface of the body 1 is formed with the water collecting area 15 which is gradually inclined downwards from two ends to the center, and the second surrounding edge 02 is provided with an overflow port 151 for draining the accumulated water in the water collecting area 15. This configuration facilitates the removal of collected water from the gas collection chamber 20.

In this embodiment, the central portion of the main body 1 is wider than the two ends to form a disc-shaped structure in the center, the top plate 2 is a straight strip-shaped structure with the center having the same width as the two ends, the top plate 2 covers the main body 1 and exposes the two sides of the disc-shaped structure, and the overflow ports 151 are located on the disc-shaped structures at the two sides of the top plate 2.

The water pumping mechanism b of the embodiment comprises a power mechanism 3, an impeller assembly and a spraying arm a, wherein the upper part of the impeller assembly is a centrifugal impeller which penetrates through a water inlet 12 and is positioned in a water collecting cavity 16, the lower part of the impeller assembly is an axial-flow impeller which is positioned below the water inlet 12, the power mechanism 3 is arranged below the impeller assembly, and an output shaft 31 of the power mechanism is connected with the impeller assembly.

The cleaning machine of this embodiment includes the box and above-mentioned pump water mechanism b, and pump water mechanism b locates the bottom half for pump the water of bottom half upwards through spraying arm a.

This embodiment is provided with downwardly extending's first surrounding edge 01 in the edge of roof 2, upper surface at body 1 is provided with the second surrounding edge 02 that upwardly extends, first surrounding edge 01 docks each other with second surrounding edge 02 and constitutes the lateral wall that encloses and closes out gas collecting cavity 20 jointly, set up air inlet 154 on this lateral wall, above-mentioned structure seals the assembly between roof 2 and the body 1 and moves to between the lateral wall, more operating space has been reserved, be convenient for production and assembly, thereby improve the reliability that the two are connected.

Directional terms such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the present invention, but these terms are used herein for convenience of description only and are determined based on example orientations shown in the drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent with the direction of gravity.

Claims

1. The utility model provides a spray arm, includes body (1) and roof (2), runner (11) that have in body (1) and extend along body (1) length direction, open on body (1) bottom wall has water inlet (12), the roof that is linked together with runner (11) and/or the lateral wall has blowhole (13), roof (2) locate on body (1) and with body (1) between enclose jointly and synthesize gas collection chamber (20) that are used for the storage gas, blowhole (13) distribute in the region that corresponds with gas collection chamber (20), open spout (21) that correspond blowhole (13) on roof (2), just have between blowhole (13) upper end and spout (21) lower extreme and can produce clearance (100) of negative pressure in rivers injection process, its characterized in that: the edge of roof (2) is provided with downwardly extending's first surrounding edge (01), and is corresponding, the upper surface of body (1) is provided with second surrounding edge (02) that upwards extend, first surrounding edge (01) and second surrounding edge (02) dock each other and constitute the lateral wall that encloses and close out gas collecting cavity (20) jointly, open air inlet (154) in supplying air admission gas collecting cavity (20) on this lateral wall.

2. The spray arm of claim 1, wherein: the cross section of the air inlet (154) comprises a first part (1541) and a second part (1542) which are connected with each other, the first part (1541) transversely penetrates through the second surrounding edge (02) and is consistent with the height of the second surrounding edge (02), and the second part (1542) is positioned outside the first part (1541) and is gradually inclined downwards from inside to outside to form an outwards expanding structure.

3. The spray arm of claim 2, wherein: the inner edge of the second portion (1542) is arranged in correspondence of the middle of the section of the second skirt (02), the outer edge of the second portion (1542) being located on the outer surface of the body (1).

4. The spray arm of claim 2, wherein: the cross-section of the air inlet also includes a third portion (1543) positioned over the first portion (1541), the third portion (1543) being gradually inclined upwardly from the outside to the inside to form an inwardly diverging configuration.

5. The spray arm of claim 4, wherein: the outer edge of the third portion (1543) is arranged in correspondence of the middle of the section of the first skirt (01), and the inner edge of the third portion (1543) is located on the inner surface of the first skirt (01).

6. The spray arm of claim 4, wherein: the inner edge of the second portion (1542) corresponds above and below the outer edge of the third portion (1543).

7. The spray arm according to any one of claims 1 to 6, wherein: the middle part of the upper surface of the body (1) is provided with a water accumulation area (15) which is gradually inclined downwards from two ends to the center, and the second surrounding edge (02) is provided with an overflow port (151) for draining accumulated water in the water accumulation area (15).

8. The spray arm of claim 7, wherein: the central part of the body (1) is wider than the two ends so as to form a disc-shaped structure in the center, the top plate (2) is in a straight strip-shaped structure with the center consistent with the width of the two ends, the top plate (2) covers the body (1) and exposes the two sides of the disc-shaped structure, and the overflow ports are positioned on the disc-shaped structures on the two sides of the top plate (2).

9. The spray arm according to any one of claims 1 to 6, wherein: the top wall of the body (1) is provided with a first nozzle (14) extending upwards from the edge of the water spraying hole (13), and correspondingly, the top plate (2) is provided with a second nozzle (22) extending along the axial direction of the nozzle (21).

10. The spray arm of claim 9, wherein: the first nozzle (14) is provided with a first conical section (141) and a second conical section (142) which are sequentially connected along the water flow direction, the inner diameter of the first conical section (141) is gradually reduced along the water flow direction, the inner diameter of the second conical section is gradually increased along the water flow direction, and the taper of the second conical section is smaller than that of the first conical section.

11. The spray arm of claim 9, wherein: the inner diameter of the second nozzle (22) is larger than the inner diameter of the upper end of the first nozzle (14).

12. The spray arm of claim 9, wherein: the axial length of the second nozzle (22) is 5-7 mm.

13. The spray arm of claim 9, wherein: the length of a gap (100) between the upper end of the first nozzle and the lower end of the second nozzle is 2-5 mm.

14. The spray arm according to any one of claims 1 to 6, wherein: the thickness of the central part of the body (1) is larger than that of the runner parts at two sides, and the central part of the body (1) is sunken downwards relative to the runner parts at two sides.

15. A water pumping mechanism applying the spray arm of any one of claims 1 to 14, comprising a power mechanism (3) and an impeller assembly, and characterized in that: the spraying device is characterized by further comprising a spraying arm (a), the upper portion of the impeller assembly is a centrifugal impeller which penetrates through the water inlet (12) and is located in the spraying arm (a), the lower portion of the impeller assembly is an axial-flow impeller located below the water inlet (12), the power mechanism (3) is arranged below the impeller assembly, and an output shaft (31) of the power mechanism is connected with the impeller assembly.

16. A water pumping mechanism cleaning machine applied with the water pumping mechanism cleaning machine of claim 15, which comprises a box body and is characterized in that: the water pumping mechanism (b) is arranged at the bottom of the box body and is used for pumping out water at the bottom of the box body upwards through the spraying arm (a).