Valve pump assembly of cleaning machine and cleaning machine

Abstract

The valve pump assembly comprises a valve shell, a valve element and a draining pump, a water outlet is formed in the position, close to the bottom of the valve shell, of the first side of the valve shell, the draining pump is arranged outside the first side of the valve shell and communicated with the water outlet, the valve element is arranged in the valve shell in a reciprocating motion mode, and the moving direction of the valve element right faces the water outlet. The second side, opposite to the first side, of the valve shell is provided with a containing cavity allowing the valve element to retract therein. An existing T-shaped valve pump structure is changed into a linear structure, namely, the valve element and the drainage pump are oppositely arranged, the sealing face of the valve element and the valve shell is directly located at the water outlet, in this way, when the water outlet is closed through the valve element, residual water in the valve shell can be completely squeezed into the drainage pump through the valve element, and no residual water exists in the valve shell thoroughly; and the washing cavity of the cleaning machine communicated with the valve shell realizes complete residual water, so that the sterile storage requirement of the dish-washing machine is met.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and particularly to a valve pump assembly of a cleaning machine and a cleaning machine. Background Art

[0002] A cleaning machine is a device that sprays water onto dishes or fruits and vegetables to remove dirt adhering to the dishes or fruits and vegetables and clean the dishes or fruits and vegetables. Currently, cleaning machines generally use a valve pump assembly at the drainage outlet at the bottom to drain the washing water in the cleaning machine.

[0003] The prior patent ZL202321371090.6 "A Valve Pump Assembly and a Cleaning Machine for a Cleaning Machine" of the applicant discloses a structure, and its valve pump assembly includes: a pump chamber, which has a drainage channel inside, and the drainage channel has an inlet for communicating with the drainage outlet of the cleaning machine and an outlet for communicating with the drainage pipe; and an exhaust port is provided on the top wall of the pump chamber; a floating body, at least partially disposed at a position below the exhaust port in the pump chamber, and can float upward to a second position and a third position above the second position as the water level in the pump chamber rises, and can move downward to a first position below the second position as the water level in the pump chamber drops; a valve constrained together with the floating body and capable of moving synchronously with the floating body, the valve closes the exhaust port when the floating body is in the first position, opens the exhaust port when the floating body is in the second position, and closes the exhaust port when the floating body is in the third position.

[0004] Achieving no remaining water in the cabinet of the dishwasher is one of the conditions for meeting the sterile storage requirements of the dishwasher. However, the above valve pump integrated structure uses a method of sealing the inlet end. When the valve core returns and seals, it is easy to squeeze the remaining water in the valve cavity into the inlet, resulting in incomplete drainage of the same internal remaining water and unable to completely achieve the effect of no remaining water. Summary of the Utility Model

[0005] The first technical problem to be solved by the utility model is, in view of the current situation of the prior art, to provide a valve pump assembly of a cleaning machine that can squeeze the remaining water in the valve cavity into the pump chamber to achieve no remaining water in the valve cavity and thus meet the requirements of sterile storage of the dishwasher.

[0006] The second technical problem to be solved by the utility model is, in view of the current situation of the prior art, to provide a cleaning machine applying the above valve pump assembly.

[0007] The technical solution adopted by the utility model to solve at least one of the above technical problems is as follows:

[0008] A valve pump assembly of a cleaning machine, comprising a valve housing, a valve core and a drainage pump. An inlet is opened at the top of the valve housing and is communicated with the cleaning machine. The drainage pump is communicated with the outlet of the valve housing. The valve core is used to open or close the outlet of the valve housing. An outlet is opened at the first side of the valve housing near its bottom. The drainage pump is arranged outside the first side of the valve housing and is communicated with the outlet. The valve core is reciprocally movable in the valve housing and its moving direction is arranged directly opposite to the outlet. A receiving cavity for the valve core to retract into is arranged on the second side of the valve housing which is arranged opposite to the first side.

[0009] The utility model changes the existing "T"-shaped valve pump structure to an "I"-shaped structure, that is, the valve core and the drainage pump are arranged opposite to each other, and the sealing surface between the valve core and the valve housing is directly located at the outlet. In this way, when the valve core closes the outlet, the remaining water in the valve housing will all be squeezed by the valve core into the drainage pump, achieving a completely water-free state inside the valve housing, and the washing cavity of the cleaning machine communicated with the valve housing will achieve complete water drainage, thus meeting the aseptic storage requirements of the dishwasher.

[0010] Preferably, a first tapered surface with a gradually decreasing inner diameter in the water outlet direction is formed on the inner side wall of the valve housing around the outlet. Correspondingly, a second tapered surface for sealing cooperation with the first tapered surface is formed at the end of the valve core. With the above structure, not only the sealing surface is increased, but also the tapered surface is arranged around the outlet, so as to improve the sealing effect in the closed state of the outlet.

[0011] Preferably, the valve core is in a cylindrical structure, and a matching area adapted to the lower part of the valve core and communicating with the receiving cavity is formed at the bottom of the valve housing. The side wall of the matching area near the outlet forms the first tapered surface. With the above structure, the cooperation between the valve core and the valve housing is compact and reliable, and the sealing performance of the valve core to the outlet is further improved.

[0012] Preferably, the drainage pump includes an inlet pipe section communicated with the outlet of the valve housing and a pump chamber connected downstream of the inlet pipe section. The inlet pipe section forms a height difference decreasing along the water flow direction. Setting the above height difference is beneficial to improving the drainage effect and further improving the water-free effect.

[0013] Preferably, the inlet pipe section includes a first horizontal section connected to the outlet and a second horizontal section communicated with the pump chamber. The second horizontal section is lower than the first horizontal section and the two are connected by a smooth transition section. This structure is beneficial to improving the drainage effect and avoiding residue jamming.

[0014] Preferably, the power component of the drainage pump is located at the outer end of the pump chamber, an impeller connected to the power component is arranged in the pump chamber, and a drainage pipe section connected to the drainage pipe is arranged at the side of the pump chamber.

[0015] Preferably, a valve rod connected to the end of the valve core and arranged along the moving direction of the valve core is provided in the accommodation cavity. The valve rod extends out from the end of the accommodation cavity and is connected to an eccentric drive wheel outside the accommodation cavity, and the eccentric drive wheel is connected to a motor. With such a structure, it is convenient to drive the valve rod to reciprocate by the rotation of the eccentric drive wheel, so as to open or close the water outlet of the valve housing, with convenient operation and reliable use.

[0016] Preferably, the drainage pump includes an inlet pipe section communicated with the water outlet of the valve housing and a pump cavity connected downstream of the inlet pipe section. A drainage pipe connecting the pump cavity and the valve housing is provided outside the valve housing, and the outlet of the drainage pipe is arranged corresponding to the upper surface of the valve core in the valve housing. When the water outlet of the valve housing is in the closed state, since part of the valve core surface will be exposed inside the valve housing and communicated with the water body in the dishwasher, during the cleaning process, some residues may remain on the valve core surface, resulting in jamming of the valve core during operation and poor sealing. To solve this problem, the above-mentioned drainage pipe is provided to ensure that there is no residue on the valve core surface before drainage, improving the overall operation reliability of the valve.

[0017] Preferably, a pressure sensor capable of detecting the pressure in the pump cavity to judge whether the drainage is complete is provided at the bottom of the pump cavity. By detecting the pressure in the pump cavity during the operation of the pump, it is detected whether the water inside the dishwasher is drained completely, more effectively controlling the operation time of the drainage pump and realizing more energy-saving of the dishwasher.

[0018] A cleaning machine includes a box body, a drainage port is opened at the bottom of the box body, and also includes the above-mentioned valve pump assembly. The valve pump assembly is arranged under the box body, and the water inlet at the top of the valve housing is communicated with the drainage port of the box body.

[0019] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model changes the existing "T"-shaped valve pump structure to an "I"-shaped structure, that is, the valve core and the drainage pump are arranged relatively, and the sealing surface between the valve core and the valve housing is directly located at the water outlet. In this way, when the valve core closes the water outlet, the remaining water in the valve housing will be completely squeezed into the drainage pump by the valve core, realizing that there is no remaining water inside the valve housing, and the washing cavity of the cleaning machine communicated with the valve housing realizes complete drainage of the remaining water, thus meeting the aseptic storage requirements of the dishwasher. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the valve pump assembly according to the embodiment of the present utility model;

[0021] Figure 2 is Figure 1 a schematic diagram from another angle;

[0022] Figure 3 is Figure 1 an exploded view of;

[0023] Figure 4 is Figure 1 a sectional view of Specific embodiments

[0024] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments.

[0025] As Figures 1 to 4 shown, the valve pump assembly of the cleaning machine in this embodiment includes a valve housing 1, a valve core 2 and a drainage pump 3. An inlet 11 communicating with the cleaning machine is opened at the top of the valve housing 1. The drainage pump 3 is connected to the outlet 12 of the valve housing 1. The valve core 2 is used to open or close the outlet 12 of the valve housing 1.

[0026] An outlet 12 is opened on the first side of the valve housing 1 near its bottom. The drainage pump 3 is arranged outside the first side of the valve housing 1 and communicates with the outlet 12. The valve core 2 is reciprocally movable in the valve housing 1 and its moving direction is arranged opposite to the outlet 12. A receiving cavity 13 for the valve core 2 to retract into is provided on the second side of the valve housing 1 opposite to the first side.

[0027] A first tapered surface 121 with a gradually decreasing inner diameter along the water outlet direction is formed on the inner side wall of the valve housing 1 around the outlet 12. Correspondingly, a second tapered surface 21 for sealing cooperation with the first tapered surface 121 is formed at the end of the valve core 2. With the above structure, not only the sealing surface is increased, but also the tapered surface is arranged around the outlet, so as to improve the sealing effect when the outlet is in the closed state.

[0028] The valve core 2 has a cylindrical structure. A matching area 14 that is adapted to the lower part of the valve core 2 and communicates with the receiving cavity 13 is formed at the bottom of the valve housing 1. The side wall of the matching area 14 close to the outlet 12 forms the first tapered surface 121. With the above structure, the cooperation between the valve core 2 and the valve housing 1 is compact and reliable, and the sealing performance of the valve core to the outlet is further improved.

[0029] The drainage pump 3 includes an inlet pipe section 31 connected to the outlet 12 of the valve housing 1 and a pump chamber 32 connected downstream of the inlet pipe section 31. The inlet pipe section 31 forms a height difference that decreases along the water flow direction. Setting the above height difference is beneficial to improving the drainage effect and further improving the effect of no remaining water.

[0030] The inlet pipe section 31 includes a first horizontal section 311 connected to the outlet 12 and a second horizontal section 312 connected to the pump chamber 32. The second horizontal section 312 is lower than the first horizontal section 311 and the two are connected by a smooth transition section 313. This structure is beneficial to improving the drainage effect and avoiding residue jamming.

[0031] The power component 33 of the drainage pump 3 is located at the outer end of the pump chamber 32. An impeller 331 connected to the power component 33 is arranged in the pump chamber 32. A drainage pipe section 321 connected to the drainage pipe is provided on the side of the pump chamber 32.

[0032] A valve rod 22 connected to the end of the valve core 2 and arranged along the moving direction of the valve core 2 is provided in the accommodating cavity 13. The valve rod 22 extends out from the end of the accommodating cavity 13 and is connected to an eccentric transmission wheel 23 outside the accommodating cavity 13, and the eccentric transmission wheel 23 is connected to a motor 24. With such a structure, it is convenient to drive the valve rod 22 to reciprocate by the rotation of the eccentric transmission wheel 23, so as to open or close the water outlet 12 of the valve housing 1, with convenient operation and reliable use.

[0033] A drainage pipe 5 connected between the pump cavity 32 and the valve housing 1 is provided outside the valve housing 1, and the outlet 51 of the drainage pipe 5 is arranged corresponding to the upper surface of the valve core 2 in the valve housing 1. When the water outlet 12 of the valve housing 1 is in the closed state, since part of the surface of the valve core 2 will be exposed inside the valve housing 1 and communicate with the water body in the dishwasher, during the cleaning process, some residues may remain on the surface of the valve core 2, resulting in jamming of the valve core 2 during operation and problems of poor sealing. To solve this problem, the above-mentioned drainage pipe 5 is provided to ensure that there is no residue on the surface of the valve core 2 before draining, improving the overall operation reliability of the valve.

[0034] A pressure sensor 6 capable of detecting the pressure in the pump cavity 32 to judge whether the drainage is complete is provided at the bottom of the pump cavity 32. By detecting the pressure during the operation of the pump in the pump cavity 32, it is detected whether the water inside the dishwasher is drained completely, and the operation time of the drainage pump is controlled more effectively, realizing more energy-saving of the dishwasher.

[0035] The cleaning machine of this embodiment includes a box body. A drainage port is opened at the bottom of the box body, and the valve-pump assembly is arranged under the box body. The water inlet 11 at the top of the valve housing 1 is communicated with the drainage port of the box body.

[0036] During drainage:

[0037] The drainage pump 3 operates for 3 - 5 s first and then opens the water outlet 12 through the valve core 2. At this time, the water inside the dishwasher will be pumped out through the water suction port of the drainage pump 3. At this time, the pressure sensor 5 in the pump cavity 32 is in a compressed state and will detect a pressure F; at the same time, most of the water in the pump cavity 32 will be drained through the drainage pipe, and a part will wash the surface of the valve core 2 through the drainage pipe 5 to ensure that there is no foreign object jamming on the surface of the valve core 2 during the opening process;

[0038] When the water inside the dishwasher is drained completely, air will enter the water suction port of the drainage pump 3. At this time, the negative pressure inside the drainage pump 3 will disappear, and the whole inside the pump cavity 32 is in a stirring state. At this time, the pressure sensor 5 senses the pressure F1; at this time, the valve core 2 starts to close, and the valve core 2 will squeeze the residual water inside the valve housing 1 into the drainage pump 3. After the water outlet 12 is completely closed, the drainage pump 3 stops operating.

[0039] In this embodiment, the existing "T"-shaped valve pump structure is changed to an "I"-shaped structure, that is, the valve core 2 and the drainage pump 3 are arranged opposite to each other, and the sealing surface between the valve core 2 and the valve housing 1 is directly located at the water outlet 12. In this way, when the valve core 2 closes the water outlet 12, the remaining water in the valve housing 1 will be completely squeezed into the drainage pump 3 by the valve core 2, achieving a completely water-free interior in the valve housing 1, and the washing chamber of the washing machine connected to the valve housing 1 will be completely free of water, thus meeting the requirement of sterile storage for the dishwasher.

[0040] In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present utility model. However, these terms are used here only for the purpose of convenient explanation and are determined based on the exemplary orientations shown in the drawings. Since the disclosed embodiments of the present utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A valve pump assembly for a cleaning machine, comprising a valve housing (1), a valve core (2) and a drainage pump (3), wherein the top of the valve housing (1) is provided with a water inlet (11) connected to the cleaning machine, the drainage pump (3) is connected to a water outlet (12) of the valve housing (1), and the valve core (2) is used to open or close the water outlet (12) of the valve housing (1), characterized in that: The first side of the valve housing (1) is provided with a water outlet (12) near the bottom thereof; the drainage pump (3) is arranged outside the first side of the valve housing (1) and is in communication with the water outlet (12); the valve core (2) is arranged in the valve housing (1) so as to be reciprocatingly movable and its moving direction is arranged opposite to the water outlet (12); and a second side of the valve housing (1) arranged opposite to the first side is provided with a receiving chamber (13) into which the valve core (2) is withdrawn.

2. The valve pump assembly of a cleaning machine according to claim 1, characterized in that: The inner wall of the valve housing (1) is formed with a first conical surface (121) around the water outlet (12), the inner diameter of which gradually decreases along the water outlet direction; correspondingly, the end of the valve core (2) is formed with a second conical surface (21) that cooperates with the first conical surface (121) for sealing.

3. The valve pump assembly of the cleaning machine according to claim 2, characterized in that: The valve core (2) is of cylindrical structure, and the bottom of the valve housing (1) forms a matching area (14) which is adapted to the shape of the lower part of the valve core (2) and is connected to the accommodating cavity (13), and the side wall of the matching area (14) close to the water outlet (12) forms the first conical surface (121).

4. The valve pump assembly of a cleaning machine according to claim 1, characterized in that: The drainage pump (3) comprises an inlet pipe section (31) connected to the water outlet (12) of the valve housing (1) and a pump chamber (32) connected downstream of the inlet pipe section (31); the inlet pipe section (31) is formed with a height difference that decreases along the water flow direction.

5. The valve pump assembly of a cleaning machine according to claim 4, characterized in that: The inlet pipe section (31) comprises a first horizontal section (311) connected to the water outlet (12) and a second horizontal section (312) connected to the pump chamber (32); the second horizontal section (312) is lower than the first horizontal section (311) and the two are connected via a smooth transition section (313).

6. The valve pump assembly of a cleaning machine according to claim 4, characterized in that: The power part (33) of the drainage pump (3) is located at the outer end of the pump chamber (32), an impeller (331) connected to the power part (33) is arranged in the pump chamber (32), and a drainage pipe section (321) connected to a drainage pipe is arranged on the side of the pump chamber (32).

7. The valve pump assembly of a cleaning machine according to any one of claims 1 to 6, characterized in that: A valve stem (22) connected to the end of the valve core (2) and arranged along the moving direction of the valve core (2) is provided in the accommodating chamber (13); the valve stem (22) extends from the end of the accommodating chamber (13) and is connected to an eccentric transmission wheel (23) outside the accommodating chamber (13); and the eccentric transmission wheel (23) is connected to a motor (24).

8. The valve pump assembly of a cleaning machine according to any one of claims 1 to 6, characterized in that: The drainage pump (3) comprises an inlet pipe section (31) connected to a water outlet (12) of a valve housing (1) and a pump chamber (32) connected downstream of the inlet pipe section (31); a drainage pipe (5) connected between the pump chamber (32) and the valve housing (1) is arranged outside the valve housing (1); and the outlet of the drainage pipe (5) is arranged corresponding to the upper surface of the valve core (2) in the valve housing (1).

9. The valve pump assembly of a cleaning machine according to any one of claims 4 to 6, characterized in that: A pressure sensor (6) is arranged at the bottom of the pump chamber (32) and is capable of detecting the pressure in the pump chamber (32) to determine whether the water has been completely drained.

10. A cleaning machine, comprising a box, wherein a drain port is provided at the bottom of the box, wherein: It also comprises a valve pump assembly as claimed in any one of claims 1 to 9, wherein the valve pump assembly is arranged under the box body, and the water inlet (11) at the top of the valve housing (1) is connected to the drain outlet of the box body.

Images