CN217678204U - Outer barrel cover of pulsator washing machine and pulsator washing machine with outer barrel cover - Google Patents

Abstract

The utility model discloses an outer barrel cover of a rotary drum washing machine, which comprises a body, wherein a fluid inlet, an annular cavity and a plurality of injection channels are arranged on the body, the annular cavity can be communicated with the fluid inlet, a plurality of inner convex arc parts which are uniformly distributed along the circumferential direction are formed on the inner circumferential cavity wall of the annular cavity, and each inner convex arc part radially bulges inwards from the inner circumferential cavity wall; each of the plurality of injection passages is formed on a corresponding one of the inward bulges so as to inject the fluid from the annular cavity into the inner tub of the pulsator washing machine in the form of an annular waterfall flow. Therefore, the spraying can be covered comprehensively, the spraying efficiency is greatly improved, and the clothes in the inner barrel can be soaked quickly. Further, the spraying channel is a notch formed on an inner convex arc part which directly forms a part of the inner peripheral cavity wall of the annular cavity, so that the structure of the spraying channel is simpler, and the reliability of the spraying structure is greatly improved.

Description

Outer barrel cover of pulsator washing machine and pulsator washing machine with outer barrel cover

Technical Field

The utility model relates to a washing equipment especially relates to a rotary drum washing machine's outer bung and rotary drum washing machine.

Background

A pulsator washing machine, which is one of the common forms of washing apparatuses, generally includes a cabinet, and an outer tub and an inner tub disposed in the cabinet. The outer tub is designed as a tub and thus is fixed in the cabinet, and the inner tub is rotatably disposed in the outer tub. The bottom of the inner barrel is provided with a wave wheel. The pulsator may be driven to rotate by a motor disposed at a lower portion of the outer tub. When the pulsator washing machine performs washing and rinsing operations, the pulsator drives the washing water in the outer tub and the laundry in the inner tub to rotate. When the pulsator washing machine performs spin-drying operation, the inner barrel drives the clothes therein to rotate at high speed under the action of the pulsator, so that the moisture on the clothes is separated from the clothes under the action of centrifugal force.

The pulsator washing machine often causes the following problems in the use process: washing powder and laundry detergent are deposited at the bottom of the outer barrel and are not easily dissolved by the washing water; when the number of the washed clothes is large, the condition that part of the clothes is not soaked by the washing water is easy to occur; when washing, the down and other clothes often float above the level of washing water, and the washing effect is poor. In order to solve these problems, the conventional pulsator washing machine is generally provided with a spraying device. The shower device is generally disposed on an outer tub cover of the outer tub. One common spray assembly includes a spray nozzle and a circulating water pump in fluid communication with the spray nozzle. When the pulsator washing machine works, the circulating water pump can pump the washing water in the outer barrel to the nozzle, so that the washing water is sprayed to the clothes in the inner barrel through the nozzle.

Chinese utility model patent CN212357730U discloses an outer barrel cover of pulsator washing machine and pulsator washing machine with the same. The outer tub cover has a body on which a fluid inlet, an annular chamber communicating with the fluid inlet, and a plurality of spray portions uniformly distributed along a circumferential direction of the annular chamber are provided. Each of the injection parts includes a nozzle hole, a guide part, and a flow blocking part which is located above the guide part and defines a guide flow channel inclined downward together with the guide part so that a fluid injected from the nozzle hole flows along the guide flow channel. Fluid from the annular cavity is sprayed into an inner tub of the pulsator washing machine in an annular waterfall flow form by a plurality of spraying parts evenly distributed along the circumference of the annular cavity. The annular waterfall water flow can realize the comprehensive coverage of spraying, improve the spraying efficiency and quickly soak the clothes in the inner barrel. The flow deflectors and baffles are relatively independent projecting structures extending radially inward from and significantly beyond the inner periphery of the annular cavity. Such relatively independent protruding structures are too complex and the structural stability is not high.

Accordingly, there is a need in the art for a new solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems that the reliability of the spraying structure in the pulsator washing machine in the prior art needs to be improved, the utility model provides an outer barrel cover of a pulsator washing machine, which comprises a body, wherein a fluid inlet, an annular cavity and a plurality of spraying channels are arranged on the body, the annular cavity can be communicated with the fluid inlet in a fluid manner, a plurality of inner convex arc parts which are uniformly distributed along the circumferential direction are formed on the inner circumferential cavity wall of the annular cavity, and each inner convex arc part bulges inwards in the radial direction from the inner circumferential cavity wall; each of the plurality of injection channels is a notch formed on a corresponding one of the inward convex arc parts so as to inject the fluid from the annular cavity into the inner tub of the pulsator washing machine in the form of annular waterfall flow.

The technical solution of the outer tub cover of the pulsator washing machine of the present invention is that the outer tub cover of the pulsator washing machine has a body, on which a fluid inlet, an annular chamber and a plurality of spray channels are provided. The fluid inlet is used to connect to a water source of the pulsator washing machine, such as washing water supplied by a circulation pump, or external tap water. Through which washing or tap water flows into the annular chamber. The annular cavity is provided with a plurality of inner convex arc parts which are formed on the inner peripheral cavity wall of the annular cavity and are uniformly distributed along the circumferential direction, and each inner convex arc part bulges inwards in the radial direction from the inner peripheral cavity wall. The injection channel is a notch directly arranged on each inner convex arc part so as to inject the fluid from the annular cavity into the inner barrel of the pulsator washing machine in the form of annular waterfall flow. This arrangement enables the water streams ejected from the ejection passages to form annular waterfall water streams together in the inner tub of the pulsator washing machine. The annular waterfall water flow can realize the comprehensive coverage of spraying, thereby greatly improving the spraying efficiency and quickly soaking clothes in the inner barrel, accelerating the circulation rate of washing or rinsing internal water under the condition of circulating washing water, and improving the dissolving effect of the detergent to better exert the efficacy of the detergent. And because the spraying channels are notches formed on the corresponding inner convex arc parts, and the inner convex arc parts directly form a part of the inner peripheral cavity wall of the annular cavity, the firm connection degree of the inner convex arc parts and the annular cavity is ensured, the structure of the inner convex arc parts integrally formed with the annular cavity is more stable and reliable, and the structure of the spraying channels is obviously simplified. Therefore, the spraying structure is simpler, and meanwhile, the reliability of the spraying structure is greatly improved.

In a preferred technical solution of the outer tub cover of the pulsator washing machine, the spray channel has two opposite channel side walls, and the two channel side walls gradually get away from each other from the annular cavity radially inwards to form an outwardly expanded spray channel. Through setting the injection passage to from the annular chamber radially inwards expand outward gradually, can give the fluid pressure boost of annular chamber in order to strengthen the injection effect on the one hand, the other party can be so that rivers are fan-shaped in interior bucket and spray, has increased the scope that sprays of washing water, helps forming annular rivers curtain, and then has optimized rotary drum washing machine's the effect that sprays. In addition, only set up to enlarge gradually two lateral walls of passageway, the roof still keeps the level, is to avoid rivers upwards to take place the scattering in order to guarantee that jet passage realizes enlarging simultaneously to the influence sprays the effect.

In a preferred technical scheme of the outer barrel cover of the pulsator washing machine, a round-off structure is formed around the peripheral wall of each injection channel. Make the inside of injection passage become slick and sly through fillet structure, can make the fluid follow the entering injection passage that the annular chamber can be smooth on the one hand, on the other hand makes the thread scraps can't hang in injection passage to avoid the circulation to spray the phenomenon of blockking up the orifice.

In a preferred technical scheme of the outer barrel cover of the pulsator washing machine, the cross section of each spraying channel is rectangular. The rectangular cross section enables the spraying channel to have enough width in the circumferential direction of the annular cavity, and can help the sprayed water flow to form an annular water flow curtain in the inner barrel.

In a preferred technical scheme of the outer barrel cover of the pulsator washing machine, the annular cavity comprises a lower shell part and an upper cover covering the lower shell part. The annular cavity is arranged to be combined by the upper cover and the lower shell part, so that the complex structure is separately manufactured, and the forming of the machining process is facilitated.

In a preferred technical solution of the outer tub cover of the pulsator washing machine, the plurality of spray channels are formed on a bottom of the lower case. Set up the bottom of jet passage in lower casing, jet passage forms the lowest portion at the annular chamber promptly to make things convenient for the whole exhalations of fluid in the annular chamber, avoid having washing water or running water deposit in the annular chamber, breed the bacterium, cause secondary pollution, influence washing effect.

In a preferred technical scheme of the outer barrel cover of the pulsator washing machine, the lower shell and the upper cover form closed connection. A closed connection is formed between the lower housing part and the upper cover to ensure the structural integrity of the annular chamber.

In the preferable technical scheme of the outer barrel cover of the pulsator washing machine, the body is further provided with a splash-proof structure, and the splash-proof structure is positioned above the inner convex arc part. The anti-splashing structure shields all the inner convex arc parts above the inner convex arc parts by positioning, so that a user can be prevented from seeing the raised inner convex arc parts, and the attractiveness of the whole pulsator washing machine is improved. More importantly, the splash-proof structure can help to avoid upward scattering of the sprayed water flow, so that the spraying effect is improved.

In the preferable technical scheme of the outer barrel cover of the pulsator washing machine, the body is further provided with a connecting part for fixing the outer barrel cover to the outer barrel of the pulsator washing machine. The outer barrel cover and the outer barrel can be fixedly connected through the connecting part.

The utility model also provides a rotary drum washing machine, rotary drum washing machine includes any one of the aforesaid rotary drum washing machine's outer bung. Through the annular cavity and the plurality of spraying channels arranged on the outer barrel cover, annular spraying water flow waterfalls can be formed in the inner barrel of the pulsator washing machine, and under the condition that the inner barrel rotates at a high speed, the annular spraying water flow waterfalls can quickly penetrate through clothes in the inner barrel to quickly realize the wetting of the clothes and are centrifuged to the outer barrel, so that the rinsing speed is greatly improved. In addition, such water jet flow forming the annular waterfall can effectively prevent the problem of floating of the laundry, thus achieving efficient washing/rinsing of the laundry and thus improving the ability to wash the laundry. It should also be noted that the angle of view produced by the circular waterfall water flow is also very good, and as a result, the user experience of the whole washing machine is further improved.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a front view structural schematic diagram of an embodiment of the pulsator washing machine of the present invention;

fig. 2 is a schematic top view of an embodiment of an outer tub cover of a pulsator washing machine according to the present invention;

FIG. 3 isbase:Sub>A cross-sectional view of the outer tub cover of the pulsator washing machine of the present invention taken along the line A-A of FIG. 2;

fig. 4 is a schematic enlarged plan view of a part B of the outer tub cover of the pulsator washing machine according to the embodiment of the present invention shown in fig. 3, the part B being related to the annular chamber and the spraying passage;

fig. 5 is a schematic perspective view of an embodiment of an outer tub cover of a pulsator washing machine according to the present invention;

fig. 6 is a schematic perspective view of the upper cover in the embodiment of the outer tub cover of the pulsator washing machine of the present invention;

fig. 7 is a first schematic perspective view of the lower casing portion in an embodiment of the outer tub cover of the pulsator washing machine of the present invention;

fig. 8 is a schematic enlarged plan view of a part C of the outer tub cover of the pulsator washing machine of fig. 7, which is about the inner convex arc part and the injection passage;

fig. 9 is a second schematic perspective view of the lower casing portion in the embodiment of the outer tub cover of the pulsator washing machine of the present invention;

fig. 10 is a schematic enlarged plan view of a part D of the outer tub cover of the pulsator washing machine according to the embodiment of the present invention shown in fig. 9, the part D being related to the inner convex arc part and the injection passage.

List of reference numerals:

1. a pulsator washing machine; 10. a circulating water pipe; 11. a box body; 111. a door cover; 112. a tray seat; 12. an outer tub; 121. an outer barrel cover; 211. a first connection portion; 212. a second connecting portion; 213. an annular cavity; 2131. an inwardly convex arcuate portion; 214. a fluid inlet; 215. an injection channel; 2151. a fillet structure; 2152. a jet channel sidewall; 2152a, a first jet channel sidewall; 2152b, a second jet channel sidewall; 2153. a jet channel first channel port; 2154. an injection channel second passage opening; 216. an upper cover; 216a, an upper cover upper surface; 216b, the lower surface of the upper cover; 216c, an inner edge of the upper cover; 216d, the outer edge of the upper cover; 2161. an outer edge connecting portion; 2162. an inner edge connection portion; 217. a lower housing portion; 217a, the upper surface of the lower shell; 217b, lower inferior surface of inferior shell; 2171. the peripheral cavity wall of the annular cavity; 2172. the inner peripheral cavity wall of the annular cavity; 2173. an annular groove; 218. an anti-splash structure; 219. a body; 13. an inner barrel; 14. a lint filter; 15. an impeller; 16. a drive motor; 17. a drain valve; 18. a drain pipe; 19. and a circulating pump.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", "top", "bottom", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the apparatus or component must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "disposed," and "connected" are used broadly in the description of the present invention, and may include, for example, a fixed connection, a detachable connection, or an integral connection; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In order to solve the above-mentioned problem that the reliability of the spraying structure in the pulsator washing machine in the prior art needs to be improved, the utility model provides an outer barrel cover 121 of a pulsator washing machine, the outer barrel cover 121 has a body 219, be equipped with fluid inlet 214, annular chamber 213 and a plurality of injection channel 215 on the body 219, annular chamber 213 can form fluid communication with fluid inlet 214 to form a plurality of inner convex arc portions 2131 that are evenly distributed along circumference on the inner circumferential cavity wall 2172 of annular chamber 213, each inner convex arc portion 2131 bulges inwards in the radial direction from the inner circumferential cavity wall 2172; each of the plurality of spray channels 215 is a cut-out formed on a corresponding one of the inner convexo-arcs 2131 so as to spray the fluid from the annular cavity 213 into the inner tub 13 of the pulsator washing machine 1 in the form of an annular waterfall flow.

Fig. 1 is a front view structure diagram of an embodiment of the pulsator washing machine of the present invention. As shown in fig. 1, in one or more embodiments, the pulsator washing machine 1 of the present invention mainly includes a cabinet 11, an outer tub 12, an inner tub 13, a lint filter 14, a pulsator 15, a driving motor 16, a drain valve 17, and a drain pipe 18. Wherein the outer tub 12 is fixedly disposed inside the cabinet 11, the inner tub 13 is rotatably disposed in the outer tub 12, and the pulsator 15 is rotatably disposed at the bottom of the inner tub 13. A lint filter 14 is provided on the inner tub 13 to filter lint in the washing water during the washing process. The driving motor 16 is fixedly mounted to the cabinet 11 or the outer tub 12. The driving motor 16 is respectively in driving connection with the inner tub 13 and the pulsator 15 through a rotating shaft. The driving motor 16 can selectively drive the inner duct 13 and the pulsator 15 to rotate. Since the technical means for driving the motor 16 to selectively drive the inner tub 13 and the pulsator 15 are well known to those skilled in the art, they will not be described herein. Further, a water inlet valve port of the drain valve 17 is communicated with an inner cavity of the outer barrel 12 through a water pipe, and a water outlet valve port of the drain valve 17 is communicated to the outside of the box body 11 through a drain pipe 18. When the washing water in the outer tub 12 needs to be drained, the drain valve 17 is opened, and the washing water is drained to the outside through the drain pipe 18.

As shown in fig. 1, in one or more embodiments, a water outlet on the outer tub 12, which is in communication with the drain valve 17, is located at the bottom of the outer tub 12, so that the washing water in the outer tub 12 can be drained through the water outlet. Preferably, the drain valve 17 is mounted to an inner wall of the cabinet 11, and alternatively, the drain valve 17 may be mounted at other suitable positions, for example, the drain valve 17 is mounted to an outer wall of the outer tub 12. In addition, a person skilled in the art may omit a water pipe between the drain valve 17 and the outer tub 12 as needed, so that the drain valve 17 is directly mounted on the outer tub 12 and is communicated with the inner cavity of the outer tub 12.

As shown in FIG. 1, in one or more embodiments, a tray 111 is mounted on the top of the cabinet 11, and a door 112 is pivotally attached to the tray 111. The door 112 is configured to be opened and closed to allow laundry to be put into and taken out of the inner tub 16. An outer tub cover 121 is disposed on the top of the outer tub 12, and the outer tub cover 121 is used for shielding the upper edges of the outer tub 12 and the inner tub 13 to prevent the laundry from entering into the interlayer between the outer tub 12 and the inner tub 13.

As shown in fig. 1, in one or more embodiments, the pulsator washing machine 1 of the present invention further includes a spraying system. The sprinkler system includes a circulation pump 19, a circulation pipe 10, an annular chamber 213, a fluid inlet 214 and a plurality of spray channels 215. As shown in fig. 1, in one or more embodiments, the water inlet pump port of the circulation pump 19 is communicated with the inner cavity of the outer tub 12 through a water pipe, and the water outlet pump port of the circulation pump 19 is communicated with the fluid inlet 214 on the outer tub cover 121 through the circulation water pipe 10. Preferably, a water outlet of the outer barrel 12 communicated with the circulating pump 19 is located at the bottom of the outer barrel 12. It is further preferred that the circulation pump 19 is mounted to the inner wall of the cabinet 11, and alternatively, the circulation pump 19 may be mounted to other suitable positions, for example, to the outer wall of the outer tub 2. In addition, a person skilled in the art can omit a water pipe between the circulating pump 8 and the outer tub 2 as required, so that the circulating pump 8 is directly mounted on the outer tub 2 and is communicated with the inner cavity of the outer tub 2.

In an alternative embodiment, the utility model discloses a rotary drum washing machine 1's spraying system can also set up to: the fluid inlet 214 on the outer barrel cover 121 is communicated with a water inlet valve (not shown) of the pulsator washing machine 1 through a water pipe. When the inlet port of the inlet valve is connected to the faucet, the tap water can be supplied to the annular chamber 213 along the path of the inlet valve, the water pipe and the fluid inlet 214, so that the spray channel 215 sprays the tap water onto the laundry in the inner tub 13 to wet the laundry.

In another alternative embodiment, the spraying system of the pulsator washing machine 1 of the present invention has a circulation pump 19, a circulation water pipe 10, a water inlet valve (not shown in the figure) and a water pipe connecting the water inlet valve and the fluid inlet 214, and a stop valve is connected in series between the water inlet valve and the fluid inlet 213. At this time, the circulation pump 8 and the water inlet valve may be separately or collectively used as water supply means. When the tap water is required to spray the laundry, the water inlet valve and the cut-off valve are opened. The circulation pump 19 is operated when it is required to spray the washing water in the outer tub 2 to the laundry.

The following explains the preferred technical solution of the outer barrel cover of the pulsator washing machine in combination with the pulsator washing machine.

Fig. 2 is a schematic top view of an embodiment of an outer tub cover of a pulsator washing machine according to the present invention; FIG. 3 isbase:Sub>A cross-sectional view of the outer tub cover of the pulsator washing machine of the present invention taken along the line A-A of FIG. 2; fig. 4 is a schematic enlarged plan view of a part B of the outer tub cover of the pulsator washing machine according to the embodiment of the present invention shown in fig. 3, the part B being related to the annular chamber and the spraying passage; fig. 5 is a schematic perspective view of the structure of the outer tub cover of the pulsator washing machine according to the embodiment of the present invention. As shown in fig. 2-5, in one or more embodiments, the body 219 of the lid 121 is a ring structure that can match the upper edges of the inner barrel 13 and the outer barrel 12 (i.e., the outer diameter of the lid 121 is approximately the outer diameter of the outer barrel 12, and the inner diameter of the lid 121 is approximately the inner diameter of the inner barrel 13).

As shown in fig. 2 to 5, in one or more embodiments, a first connection portion 211 and a second connection portion 212 are disposed on an outer circumference of the body 219 of the outer tub cover 121, and these connection portions are used to fix the outer tub cover 121 to the outer tub 12 of the pulsator washing machine 1 or other suitable positions. In one or more embodiments, the first connection portion 211 is a bolt or screw connection structure to help firmly fix the outer tub cover 121 on the outer tub 12. In one or more embodiments, the second connection portion 212 is in the form of a pawl. A plurality of jaws are evenly distributed along the outer circumference of the body 219 to be caught to the outer tub 12. Alternatively, the second connecting portion 212 may employ other suitable connecting structures, such as a snap-fit structure.

With continued reference to fig. 2-5, in one or more embodiments, a fluid inlet 214, such as a radially outwardly extending short tube, is also provided on the outer periphery of the body 219 of the outer tub cover 121 such that the fluid inlet 214 can be connected to a source of available water, such as wash water from the outer tub 12 or tap water introduced directly from the outside. An annular cavity 213 is also provided in the body 219 of the outer tub cover 121. The annular chamber 213 communicates with the fluid inlet 214 (see fig. 2) so that wash or tap water can enter the annular chamber 213 through the fluid inlet 214. A plurality of inner raised arcs 2131 are circumferentially uniformly distributed on the inner peripheral cavity wall 2172 (see fig. 7 and 8) of the annular cavity 213, and each inner raised arc 2131 bulges radially inward from the inner peripheral cavity wall 2172.

With continued reference to fig. 2-5, in one or more embodiments, a jet channel 215 formed by a cutout is provided on each inner lobe 2131. This means that the spraying channels 215 are evenly distributed along the inner circumferential cavity wall of the annular cavity 213 in the circumferential direction so as to spray the fluid from the annular cavity 213 into the inner tub 12 of the pulsator washing machine 1 in the form of an annular waterfall flow. As shown in fig. 2-5, in one or more embodiments, a splash guard 218 is formed on an inner periphery of the body 219 of the outer drum lid 121. As shown in FIG. 4, in one or more embodiments, the splash guard 218 is an annular arcuate wall extending obliquely downward from the inner circumference of the body 219. The splash guard 218 prevents water sprayed from the spray channel 215 from scattering upward. In addition, based on the orientation shown in fig. 1, the splash guard 218 is positioned over the inner arcs 2131 to shield the inner arcs 2131 from above. Therefore, the inner convex portion 2131 is not visible from above the outer tub cover 15 by the user, so that the splash guard 218 also serves a beautifying function.

Fig. 6 is a schematic perspective view of the structure of the upper cover in the embodiment of the outer tub cover of the pulsator washing machine of the present invention. As shown in fig. 2-6, in one or more embodiments, the body 219 includes an upper cover 216 and a lower shell 217. Alternatively, the body 219 of the tub cover 121 may be an integrally formed structure. The cover 216 has opposing cover upper and lower surfaces 216a, 216b, opposing cover inner and outer edges 216c, 216d. A substantially annular outer edge connecting portion 2161 is provided on the upper lid lower surface 216b near the upper lid outer edge 216d. An inner edge connecting portion 2162 is provided on the upper cover lower surface 216b near the upper cover inner edge 216 c. The shapes of the inner edge connecting portion 2162 and the outer edge connecting portion 2161 are matched to conform to the shape of the annular cavity 213.

Fig. 7 is a first schematic perspective view of the lower shell portion in an embodiment of the outer tub cover of the pulsator washing machine of the present invention; fig. 8 is a C-portion enlarged plan view of the inner convex arc portion and the injection channel of the embodiment of the outer tub cover of the pulsator washing machine of the present invention shown in fig. 7; fig. 9 is a second schematic perspective view of the lower housing portion in the embodiment of the outer tub cover of the pulsator washing machine of the present invention; fig. 10 is a schematic enlarged plan view of a part D of the outer tub cover of the pulsator washing machine according to the embodiment of the present invention shown in fig. 9, the part D being related to the inner convex arc part and the injection passage. 7-10, in one or more embodiments, the inferior shell portion 217 has opposing inferior shell superior and inferior shell surfaces 217a, 217b.

As shown in fig. 7-10, in one or more embodiments, a peripheral cavity wall 2171 of the annular cavity is provided at an outer edge on the lower shell upper surface 217 a. The outer peripheral cavity wall 2171 extends upward along the centerline direction of the lower shell portion 217 and is configured to be mateable with the outer edge connecting portion 2161. An inner peripheral cavity wall 2172 of the annular cavity is provided at the inner edge on the lower shell lower surface 217 a. The inner peripheral cavity wall 2172 extends upward along a centerline direction of the lower shell portion 217 and is configured to mate with the inner edge connector portion 2162. An annular recess 2173 is defined in the lower shell upper surface 217a by the outer perimeter cavity wall 2171 and the inner perimeter cavity wall 2172. Alternatively, the annular groove 2173 may be formed on the upper cover lower surface 216b, or the annular groove 2173 may be formed on both the upper cover lower surface 216b and the lower shell upper surface 217 a. The complete annular cavity 213 may be formed when the upper cover 216 and the lower cover 217 are assembled together by a mating, closed connection between the outer edge connector 2161 and the outer peripheral cavity wall 2171 and the inner edge connector 2162 and the inner peripheral cavity wall 2172.

As shown in fig. 7-10, in one or more embodiments, each injection passage 215 is formed at a location intermediate inner raised arc 213 on inner peripheral cavity wall 2172 and takes the form of a cut through the wall of inner raised arc 213. Jet channel 215 extends on lower housing upper surface 217a radially inwardly of the lower housing portion and is formed with a jet channel first passage port 2153 and a jet channel second passage port 2154 in that order. Injection channel first passage opening 2153 and injection channel second passage opening 2154 are substantially rectangular holes. Alternatively, jet channel first port 2153 and jet channel second port 2154 may take other suitable cross-sectional shapes, such as square, trapezoidal, etc. In one or more embodiments, a rounded structure 2151 is formed on the peripheral wall of jet channel 215 around jet channel first channel opening 2153. When the pulsator washing machine sprays circulating washing water, the washing water easily carries small threads and scraps from clothes. The round-off structure around the spray hole leads the inner part and the vicinity of the spray hole to be smooth, so that the thread scraps can not be hung in the spray hole and the vicinity of the spray hole, thereby avoiding the blockage of the spray hole. Alternatively, fillets 2151 are also formed in the peripheral wall of jet channel 215 around jet channel second opening 2154.

As shown in fig. 7-10, in one or more embodiments, spray channel sidewalls 2152 are provided on both sides of spray channel 215, and spray channel sidewalls 2152 include opposing first spray channel sidewalls 2152a and first spray channel sidewalls 2152b. First jet channel side wall 2152a and first jet channel side wall 2152b taper away from each other from jet channel first channel opening 2153 to jet channel second channel opening 2154, and first jet channel side wall 2152a and first jet channel side wall 2152b have a predetermined angle a therebetween. This forms the outwardly expanding spray channel 215 (i.e., the width of the second port 2154 is greater than the width of the first port 2153) so that the water stream can be sprayed in a fan shape in the inner tub, increasing the spray range of the washing water.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art may combine the technical features of different embodiments, and may also make equivalent changes or substitutions for the related technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims (10)

1. An outer barrel cover of a pulsator washing machine is characterized in that the outer barrel cover is provided with a body, a fluid inlet, an annular cavity and a plurality of jet channels are arranged on the body,

the annular cavity and the fluid inlet can be communicated in a fluid mode, and a plurality of inner convex arc portions which are evenly distributed along the circumferential direction are formed on the inner circumferential cavity wall of the annular cavity, and each inner convex arc portion bulges inwards in the radial direction from the inner circumferential cavity wall;

each of the plurality of injection channels is a notch formed on a corresponding one of the inward convex arc parts so as to inject the fluid from the annular cavity into the inner tub of the pulsator washing machine in the form of annular waterfall flow.

2. The outer tub cover of the pulsator washing machine as claimed in claim 1, wherein the spouting channel has opposite channel sidewalls, and the two channel sidewalls are gradually spaced apart from each other radially inward from the annular chamber to form a flared spouting channel.

3. The outer tub cover of a pulsator washing machine according to claim 1 or 2, wherein a rounded structure is formed around a circumferential wall of each of the spray channels.

4. The outer tub cover of a pulsator washing machine according to claim 3, wherein each of the spraying channels has a rectangular cross-section.

5. The outer tub cover of the pulsator washing machine according to claim 1 or 2, wherein the annular chamber includes a lower casing portion and an upper cover covering the lower casing portion.

6. The outer tub cover of a pulsator washing machine according to claim 5, wherein the plurality of spray channels are formed on a bottom of the lower case.

7. The outer tub cover of a pulsator washing machine according to claim 5, wherein a closed connection is formed between the lower casing and the upper cover.

8. The outer barrel cover of the pulsator washing machine as claimed in claim 1 or 2, wherein a splash prevention structure is further provided on the body, and the splash prevention structure is positioned above the inner convex arc portion.

9. The outer tub cover of the pulsator washing machine as claimed in claim 1 or 2, wherein a connection part for fixing the outer tub cover to an outer tub of the pulsator washing machine is further provided on the body.

10. Pulsator washing machine, characterized in that it comprises an outer tub cover of a pulsator washing machine according to any one of claims 1 to 9.

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