Cleaning agent feeding mechanism, door body and cleaning machine

Abstract

The utility model relates to a cleaning agent feeding mechanism which comprises a box body, a cavity is formed in the box body, a filling port, a discharging port and a feeding port are formed in the box body, and the filling port and the discharging port are communicated with the cavity; the piston pump is arranged on the box body and connected between the discharging opening and the feeding opening; the one-way valve is arranged in an outlet of the piston pump and faces the feeding opening; a channel independent of the cavity is arranged in the box body, a water inlet hole communicated with the channel is formed in the box body, and a through hole communicated with the channel is formed in the one-way valve. The cleaning agent feeding mechanism can flush the one-way valve, and the risk of one-way valve failure caused by the fact that the cleaning agent blocks the one-way valve is reduced. The utility model further relates to a door body which comprises a door body and the detergent feeding mechanism, and the detergent feeding mechanism is arranged on the door body. The utility model further relates to a cleaning machine which comprises a box body with a washing cavity and the door body, the door body can open and close the washing cavity and is connected to the box body, and the feeding port faces the washing cavity.

Description

Technical Field

[0001] This utility model relates to a cleaning agent dispensing mechanism, a door body, and a cleaning machine. Background Technology

[0002] Dishwashers are increasingly popular due to their advantages such as good cleaning performance, ability to disinfect tableware, and time and labor savings. Currently, dishwashers typically have a dispenser on the door. After opening the door, the user places the detergent in the dispenser, which then releases the detergent into the dishwasher's washing chamber during the wash cycle.

[0003] Chinese utility model patent application CN219680553U (application number 202321297596.7), entitled "Detergent Dispensing Mechanism, Door Structure, and Dishwasher," discloses a detergent dispensing mechanism comprising a housing with an internal chamber for holding detergent. The housing has an inlet and an outlet connected to the chamber. A pump body is mounted on the housing, with its inlet fluidly connected to the chamber and its outlet fluidly connected to the chamber. When the pump body is not in operation, its outlet is closed. Similar to existing technology, the pump body uses a piston pump. Based on the operating characteristics of a piston pump, a one-way valve is required at the outlet to allow detergent in the chamber to flow unidirectionally into the outlet. This combination of the piston pump and the one-way valve enables the dispensing of detergent into the cleaning chamber. However, the cleaning agent has a relatively high viscosity, which, due to the reciprocating motion of the piston pump, can cause it to accumulate inside the check valve. Given the current dispensing mechanism, water cannot pass through the check valve. If the check valve is not flushed after each dispensing of cleaning agent, the cleaning agent remaining inside the check valve may evaporate and clog the check valve, posing a risk of check valve failure. Utility Model Content

[0004] The first technical problem to be solved by this utility model is to provide a cleaning agent dispensing mechanism that can flush the one-way valve and reduce the risk of one-way valve failure due to cleaning agent clogging.

[0005] The second technical problem to be solved by this utility model is to provide a door body that applies the aforementioned cleaning agent dispensing mechanism, in contrast to the prior art.

[0006] The third technical problem to be solved by this utility model is to provide a cleaning machine that applies the aforementioned door body, in contrast to the prior art.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a cleaning agent dispensing mechanism, comprising...

[0008] The box has an internal cavity, and the box has a filling port, a discharging port, and a feeding port, which are connected to the cavity.

[0009] A piston pump is installed on the box and connected between the discharge port and the feed port;

[0010] A one-way valve is installed inside the outlet of the piston pump, facing the feed port;

[0011] The box body has a channel independent of the cavity body, the box body has a water inlet hole connected to the channel, and the one-way valve has a through hole connected to the channel.

[0012] To avoid affecting the one-way flow function of the check valve, the through hole is opened on the side wall of the check valve, and the through hole of the check valve is connected to the outlet of the channel.

[0013] To prevent impurities in the water from entering the check valve and clogging it, the maximum passage distance of the inlet hole is less than the clogging distance of the check valve. The clogging distance of the check valve is the minimum of the smallest spherical particle diameter that cannot pass through the through hole and the smallest spherical particle diameter that cannot pass through the passage surface of the check valve.

[0014] With a simple structure, the box includes a body and a cover, the cavity is disposed on the body, and the cover is disposed on the body with an openable filling port;

[0015] The channel includes a first flow channel formed between the cover and the body, and a second flow channel disposed within the body and connected to a through hole on the one-way valve. The body also has a communication port connecting the first flow channel and the second flow channel.

[0016] The water inlet includes a small hole formed on the cover.

[0017] Preferably, there is a connection gap between the cover and the body, and the water inlet hole further includes the connection gap.

[0018] In order to increase the flow rate of water entering the one-way valve, a water guide plate is provided on the outer periphery of the connection port corresponding to the downstream side of the water inlet hole, which converges towards the connection port.

[0019] Preferably, the cross-section of the water guide plate is V-shaped.

[0020] The structure is ingenious, with one end of the cover rotatably connected to the body, and the other end of the cover having a buckle. The water guide plate has a connecting part for the buckle to engage.

[0021] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a door body, including a door body, characterized in that: it also includes the aforementioned detergent dispensing mechanism, which is disposed on the door body.

[0022] The technical solution adopted by this utility model to solve the third technical problem mentioned above is as follows: a cleaning machine, including a box with a washing chamber and the aforementioned door, wherein the door is connected to the box to open and close the washing chamber, and the feeding port faces the washing chamber.

[0023] Compared with existing technologies, the advantages of this invention are as follows: The cleaning agent dispensing mechanism of this invention has a channel for rinsing the one-way valve within the housing. This channel is independent of the cleaning agent placement chamber. During the cleaning process, water can enter the channel through the inlet and flow into the one-way valve, thus rinsing it. The rinsed liquid then re-enters the cleaning chamber of the cleaning machine through the dispensing port, without affecting the normal cleaning operation and solving the problem of handling the rinsed liquid. The channel design effectively rinses the one-way valve, preventing residual cleaning agent from clogging it due to evaporation and reducing the risk of valve failure.

[0024] The gate body employing this check valve reduces the risk of check valve failure, ensuring long-term reliable dispensing of cleaning agents. Cleaning machines using this gate body exhibit a low failure rate in cleaning agent dispensing. Attached Figure Description

[0025] Figure 1 This is a perspective view of the cleaning agent dispensing mechanism in an embodiment of this utility model.

[0026] Figure 2 for Figure 1 A sectional view.

[0027] Figure 3 This is an exploded view of the cleaning agent dispensing mechanism in an embodiment of this utility model.

[0028] Figure 4 for Figure 3 Another perspective view.

[0029] Figure 5 This is a schematic diagram of the minimum value L among the smallest spherical particle diameters that cannot pass through the one-way valve 3 of the first type of one-way valve.

[0030] Figure 6 This is a schematic diagram of the minimum value L among the minimum spherical particle diameters that cannot pass through the passage surface of the second type of check valve 3.

[0031] Figure 7 This is a schematic diagram of the minimum value L among the smallest spherical particle diameters that cannot pass through the passage surface of the third type of check valve 3.

[0032] Figure 8This is a schematic diagram of the minimum value L among the smallest spherical particle diameters that cannot pass through the passage surface of the fourth type of check valve 3. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 4 As shown, the cleaning agent dispensing mechanism in this embodiment includes a housing 1, a piston pump 2, and a one-way valve 3.

[0035] The box body 1 has a cavity 10 inside, which is used to contain cleaning agent. The box body 1 has an injection port 11, a discharge port 12, and a feeding port 13, which are connected to the cavity 10. The injection port 11 is used to inject cleaning agent into the cavity 10, the discharge port 12 is used to output the cleaning agent to the piston pump 2 for dispensing, and the feeding port 13 is used to dispense the cleaning agent into the cleaning chamber of the cleaning machine.

[0036] To prevent leakage of the cleaning agent, the housing 1 in this embodiment includes a body 101 and a cover 102. The cavity 10 is disposed on the body 101, and the cover 102 is disposed on the body 101 with an openable filling port 11. To ensure the sealing effect of the cover 102 on the filling port 11 after it covers the body 101, interface portions are respectively provided on the cover 102 and the body 101 at positions corresponding to the filling port 11, so that a relative seal is achieved between the two after the cover 102 is placed on the body 101 through the interface portions.

[0037] In addition, to prevent the cover 102 from being lost and to facilitate the operation of the cover 102, in this embodiment, the cover 102 is rotatably connected to the body 101 via a connecting shaft.

[0038] Piston pump 2 is mounted on housing 1 and connected between discharge port 12 and feed port 13, i.e., the inlet of piston pump 2 is connected to discharge port 12 and the outlet of piston pump 2 is connected to feed port 13. Based on the function of piston pump 2, the cleaning agent in chamber 10 can be transported from discharge port 12 to feed port 13 and then put into the cleaning chamber of the cleaning machine.

[0039] The one-way valve 3 faces the feed port 13 and is located inside the outlet of the piston pump 2. The one-way valve 3 works in conjunction with the piston pump 2 to prevent the cleaning agent from flowing back and to ensure the one-way output of the cleaning agent.

[0040] The housing 1 has a channel 4 independent of the cavity 10. The housing 1 has a water inlet 5 connected to the channel 4, and the one-way valve 3 has a through hole 31 connected to the channel 4. Based on the path formed by the water inlet 5, the channel 4, and the through hole 31, water can flow into the channel 4 through the water inlet 5 and into the one-way valve 3 through the through hole 31. After the cleaning agent is added, the water flowing into the one-way valve 3 can flush away the residual cleaning agent in the one-way valve 3, preventing the one-way valve 3 from becoming clogged due to water evaporation later.

[0041] The location of the through hole 31 is specifically set according to the relative position of the one-way valve 3 to the channel 4. However, in order to avoid affecting the one-way flow function of the one-way valve 3, the through hole 31 is opened on the side wall of the one-way valve 3. In this way, the outlet of the channel 4 can be set to correspond to the side wall position of the one-way valve 3. The through hole 31 of the one-way valve 3 is connected to the outlet of the channel 4. In this way, the water in the channel 4 can flow into the one-way valve 3 through the side wall of the one-way valve 3 without affecting the normal dispensing operation of the one-way valve 3 when dispensing cleaning agent.

[0042] Since the water entering the channel 4 through the inlet hole 5 is the spray water used by the cleaning machine during cleaning, it is inevitable that impurity particles will remain in the water. If the diameter of the impurity particles is too large, and such impurity particles enter the one-way valve 3 with the water flow through the channel 4, there is a risk of clogging the one-way valve 3. Therefore, in order to avoid impurity particles in the water entering the one-way valve 3 and clogging it, the maximum passage distance of the inlet hole 5 is less than the clogging distance of the one-way valve 3, which is the minimum value among the minimum spherical particle diameter that cannot pass through the through hole 31 and the minimum spherical particle diameter that cannot pass through the passage surface of the one-way valve 3.

[0043] The minimum spherical particle diameter that cannot pass through the through hole 31 is determined according to the specific shape of the through hole 31. For example, when the through hole 31 is a rectangular through hole 31, the minimum spherical particle diameter that cannot pass through the through hole 31 is the width of the rectangular through hole 31. When the through hole 31 is a circular through hole 31, the minimum spherical particle diameter that cannot pass through the through hole 31 is the diameter of the through hole 31.

[0044] The minimum diameter of the smallest spherical particle that cannot pass through the passage surface of the one-way valve 3 is also determined according to the shape of the one-way passage hole of the one-way valve 3. The passage surface of the one-way valve 3 is the flow surface when the one-way valve 3 performs one-way flow operation. Ribs are usually provided on the passage surface of the one-way valve 3 to make the passage surface of the one-way valve 3 have multiple passage areas, such as... Figures 5 to 8 The diagram shows the minimum value L of the smallest spherical particle diameter that cannot pass through the one-way valve 3 through the passage surface of the one-way valve 3.

[0045] In order to better introduce water flow into the channel 4, the channel 4 in this embodiment includes a first flow channel 41 formed between the cover 102 and the body 101, and a second flow channel 42 disposed in the body 101 and connected to the through hole 31 on the one-way valve 3. The second flow channel 42 is independent of the cavity 10. The body 101 is also provided with a communication port 43 connecting the first flow channel 41 and the second flow channel 42.

[0046] Accordingly, the water inlet 5 includes a small hole 51 formed on the cover 102. Based on the rotational connection between the cover 102 and the body 101, a connection gap 52 is also present at the rotational connection point between the cover 102 and the body 101, and the water inlet 5 also includes this connection gap 52. Based on the specific structure of the water inlet 5, the maximum passage distance of the water inlet 5 is the maximum value between the maximum diameter of the small hole 51 and the gap distance of the connection gap 52.

[0047] During cleaning operations within the cleaning chamber of the cleaning machine, the sprayed water enters the first flow channel 41 through the inlet 5, and then enters the second flow channel 42 through the connecting port 43. To increase the flow velocity of the water entering the one-way valve 3, a water guide plate 6 is provided on the outer periphery of the connecting port 43, corresponding to the downstream side of the inlet 5, which converges towards the connecting port 43. The cross-section of the water guide plate 6 is V-shaped. This water guide plate 6 converges and guides the water in the first flow channel 41, and the converged water flow can flow into the second flow channel 42 at a faster speed, improving the flushing effect of the water flow into the one-way valve 3.

[0048] The structure is ingenious. One end of the cover 102 is rotatably connected to the body 101, and the other end of the cover 102 is provided with a buckle 1021. The water guide plate 6 is provided with a connecting part 61 for the buckle 1021 to be fastened. Based on the buckle 1021 connection between the cover 102 and the water guide plate 6, the addition of cleaning agent is greatly facilitated. The structure of the water guide plate 6 can not only fasten the cover 102, but also guide water, thus serving a dual purpose.

[0049] The cleaning agent dispensing mechanism of this invention features a channel 4 in the housing 1 for rinsing the one-way valve 3. This channel 4 is independent of the cleaning agent placement chamber 10. During the cleaning process, water can enter the channel 4 through the inlet 5 and flow into the one-way valve 3, thus rinsing it. The rinsed liquid then re-enters the cleaning chamber of the cleaning machine through the feed port 13, without affecting the normal cleaning operation and solving the problem of handling the rinsed liquid. The channel 4 effectively rinses the one-way valve 3, preventing residual cleaning agent from clogging it due to evaporation and reducing the risk of valve 3 failure.

[0050] This utility model also relates to a door body, including a door body 101 and the aforementioned cleaning agent dispensing mechanism, which is disposed on the door body 101. The door body employing this one-way valve 3 reduces the risk of valve 3 failure and ensures long-term normal dispensing of cleaning agent.

[0051] This utility model also relates to a cleaning machine, including a housing with a washing chamber and the aforementioned door, the door being openable and closable and connected to the housing to accommodate the washing chamber, with the feeding port 13 facing the washing chamber. Cleaning machines using this door have a low failure rate in dispensing cleaning agents.

[0052] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of the invention. However, the use of these terms is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered 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 cleaning agent dispensing mechanism, comprising a box body (1) having a cavity (10) inside, the box body (1) being provided with a filling opening (11), a discharge opening (12) and a dispensing opening (13), the filling opening (11) and the discharge opening (12) being in communication with the cavity (10); a piston pump (2) arranged on the box body (1) and connected between the discharge opening (12) and the dispensing opening (13); a one-way valve (3) arranged on the outlet of the piston pump (2) facing the dispensing opening (13); characterized in that a channel (4) arranged in the box body (1) outside the cavity (10), the box body (1) being provided with a water inlet hole (5) in communication with the channel (4), and the one-way valve (3) being provided with a through hole (31) in communication with the channel (4).

2. The cleaning agent dispensing mechanism according to claim 1, characterized in that: The through hole (31) is arranged on the side wall of the one-way valve (3), and the through hole (31) of the one-way valve (3) is connected with the outlet of the channel (4).

3. The cleaning agent dispensing mechanism of claim 1, wherein: The maximum passing distance of the water inlet hole (5) is smaller than the blocking distance of the one-way valve (3), and the blocking distance of the one-way valve (3) is the minimum value of the minimum spherical particle diameter that cannot pass through the through hole (31) and the minimum spherical particle diameter that cannot pass through the passing surface of the one-way valve (3).

4. The cleaning agent dispensing mechanism according to any one of claims 1 to 3, characterized in that: The box body (1) comprises a body (101) and a cover (102), the cavity (10) is arranged on the body (101), and the cover (102) is arranged on the body (101) and can open and close the filling opening (11); The channel (4) comprises a first flow channel (41) formed between the cover (102) and the body (101), and a second flow channel (42) arranged in the body (101) and connected with the through hole (31) of the one-way valve (3), and the body (101) is further provided with a communication opening (43) in communication with the first flow channel (41) and the second flow channel (42); The water inlet hole (5) comprises a small hole (51) arranged on the cover (102).

5. The cleaning agent dispensing mechanism of claim 4, wherein: The cover (102) and the body (101) have a connecting gap (52), and the water inlet hole (5) further comprises the connecting gap (52).

6. The cleaning agent dispensing mechanism of claim 4, wherein: The periphery of the communication opening (43) on the downstream side of the water inlet hole (5) is surrounded by a water guide plate (6) converging to the position of the communication opening (43).

7. The cleaning agent dispensing mechanism of claim 6, wherein: The cross section of the water guide plate (6) is V-shaped.

8. The cleaning agent dispensing mechanism of claim 6, wherein: One end of the cover (102) is rotationally connected to the body (101), the other end of the cover (102) is provided with a buckle (1021), and the water guide plate (6) is provided with a connecting portion (61) for buckling the buckle (1021).

9. A door body comprising a door body (101), characterized by: Further comprising the cleaning agent dispensing mechanism according to any one of claims 1 to 8, and the cleaning agent dispensing mechanism is arranged on the door body (101).

10. A cleaning machine comprising a cabinet having a wash chamber, characterised in that: Further comprising the door body according to claim 9, the door body is arranged on the box body and can open and close the washing cavity, and the dispensing opening (13) faces the washing cavity.

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