CN110403554B

CN110403554B - Dispenser and dishwasher

Info

Publication number: CN110403554B
Application number: CN201810395740.8A
Authority: CN
Inventors: 潘家宝; 李章�; 尹斌
Original assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Current assignee: Sanhua Aweco Appliance Systems Wuhu Co Ltd
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2022-09-27
Anticipated expiration: 2038-04-27
Also published as: CN110403554A

Abstract

The application discloses a dispenser and a dishwasher. The dispenser (100) includes a housing (2) and a first valve (60). A first cavity (2a), a second cavity (2b), a third flow channel (21), a first flow channel (23) connected with the first cavity (2a) and a second flow channel (25) connected with the second cavity (2b) are formed in the shell. The first valve (60) has a first state in which the first valve communicates the third flow passage with the first flow passage, and a second state; in the second state, the first valve communicates the third flow passage with the second flow passage. The cross-sectional area of the connection (21f) of the third flow channel (21) to the first valve (60) is smaller than the cross-sectional area of the connection (23f) of the first flow channel (23) to the first valve (60) and/or the cross-sectional area of the connection (25f) of the second flow channel (25) to the first valve (60).

Description

Dispenser and dishwasher

Technical Field

The present application relates to a dispenser and a dishwasher.

Background

The dishwasher may be provided with a dispenser for automatically dispensing detergent to the washing chamber of the dishwasher.

A related dispenser (not the prior art disclosed) may include a first chamber, a second chamber, and a valve, the first chamber and the second chamber having different amounts of detergent disposed therein. In the pre-washing stage, the valve is switched to a state of being communicated with the first cavity, and the liquid can wash the detergent in the first cavity into the washing chamber through the valve. The addition of detergent from the first chamber allows a good pre-wash of the dishes in the washing chamber. In the main washing stage, the valve is switched to a state of being communicated with the second chamber, and the liquid can wash the detergent in the second chamber into the washing chamber through the valve. The addition of detergent from the second chamber allows a good main wash of the dishes to be accomplished in the washing compartment.

However, the authors of the present application have found that dishwashers with associated dispensers do not provide the desired result of dishwashing.

Disclosure of Invention

The authors of the present application have found after their research that (one of) the important reasons why the washing effect of a dishwasher with an associated dispenser is not ideal are: the force required to switch the valve between the first and second chambers is large, resulting in a high chance of failure of the switch in actual operation. Failure of the valve switching will result in the detergent in the respective chamber (first or second chamber) not reaching or not reaching the washing chamber in a sufficient amount at the predetermined stage (pre-wash stage or main wash stage), taking part in the washing, and in turn causing the washing effect to be less than desired. The above-mentioned valve switching failure occurs only occasionally and is difficult to detect directly, and therefore no one skilled in the art prior to the present application has associated it with a non-ideal washing effect.

By improving the switching of the valve and ensuring the success of the switching of the valve, the washing effect of the dish washing machine with the relevant distributor can be improved, the excellent washing effect can be stably maintained, and the phenomenon that the washing effect of some batches of tableware is obviously inferior to that of other batches of tableware does not occur.

Based on the above findings, the present application provides a dispenser and a dishwasher including the dispenser, in which a valve in the dispenser requires less force during switching, thereby ensuring successful switching of the valve or increasing the probability of successful switching of the valve, and thus the working efficiency of the device is improved when the dispenser is applied to the dishwasher, etc.

According to one aspect of the present application, there is provided a dispenser, comprising:

the device comprises a shell, a first cavity, a second cavity, a first flow passage communicated with the first cavity, a second flow passage communicated with the second cavity and a third flow passage are formed in the shell;

a first valve having a first state in which the first valve communicates the third flow passage with the first flow passage and a second state; in the second state, the first valve communicates the third flow passage with the second flow passage;

the cross-sectional area of the joint of the third flow passage and the first valve is smaller than that of the joint of the first flow passage and the first valve and that of the joint of the second flow passage and the first valve.

In the distributor of the technical scheme of the application, the cross-sectional area of the junction of the third flow channel and the first valve is smaller than that of the junction of the first flow channel and the first valve and that of the junction of the second flow channel and the first valve, so that the switching of the first valve can be realized with less force, the successful switching of the first valve can be ensured or the successful switching probability of the first valve is improved, and further when the distributor is applied to equipment such as a dish washing machine, the working effect of the equipment can be improved.

Further, the first valve includes a valve seat, a valve core movable relative to the valve seat, and a sealing member mounted on the valve core and movable with the valve core, the sealing member may block the second flow passage and the first flow passage by contacting with the valve seat and/or the housing in the first state and the second state of the first valve, and the sealing member is in line contact or surface contact with the valve seat and/or the housing.

In the above dispenser, when the contact of the sealing member with the valve seat and/or the housing is a line contact, the force required for switching the first valve can be further reduced. When the sealing element is in surface contact with the valve seat and/or the shell, the sealing performance can be improved, and the sealing effect on the second flow passage and/or the first flow passage is ensured.

Further, the first flow channel is communicated with the first cavity through a first communication hole, and the cross-sectional area of the first communication hole at the joint of the first communication hole and the first flow channel is larger than or equal to the cross-sectional area of the first communication hole at the joint of the first communication hole and the first cavity;

and/or the second channel is communicated with the second cavity through a second communication hole, and the cross-sectional area of the second communication hole at the joint of the second channel and the second cavity is larger than or equal to that of the second communication hole at the joint of the second channel and the second cavity.

In the above distributor, the cross-sectional area of the first communication hole at the connection with the first flow passage is greater than or equal to the cross-sectional area of the first communication hole at the connection with the first chamber, so that the liquid entering the first chamber from the first flow passage has a high flow rate and impact force, and the washing auxiliary material (for example, detergent) disposed in the first chamber can be sufficiently carried to the washing chamber by the liquid. This is advantageous in securing the washing effect.

The cross-sectional area of the second communication hole at the connection with the second flow passage is greater than or equal to the cross-sectional area of the second communication hole at the connection with the second chamber, so that high flow rate and impact force of the liquid entering the second chamber from the second flow passage can be ensured, and the washing auxiliary material (such as detergent) arranged in the second chamber can be fully carried to the washing chamber by the liquid. This is advantageous in securing the washing effect.

According to another aspect of the present application, there is also provided a dishwasher having a washing chamber and a dispenser as described above, the dispenser having a detergent outlet and/or a brightener outlet in direct or via a pipe communication with the washing chamber.

The dishwasher of the technical scheme of the application is provided with the distributor, so that the switching of the first valve can be realized with small force, the successful switching of the first valve can be ensured or the successful switching probability of the first valve is improved, and the washing effect of the dishwasher is improved.

Drawings

FIGS. 1 and 2 are perspective views of a dispenser according to an embodiment of the present application from different perspectives;

FIGS. 3 and 4 are two schematic cross-sectional views of the dispenser of FIG. 1;

FIG. 5 is a schematic partial cross-sectional view of the dispenser of FIG. 1;

FIG. 6 is another schematic cross-sectional view of the dispenser of FIG. 1;

FIGS. 7 and 8 are schematic cross-sectional views of two variations of FIG. 6;

FIG. 9 is a further schematic cross-sectional view of the dispenser of FIG. 1;

FIGS. 10-12 are schematic views of the base of the dispenser of FIG. 1;

FIGS. 13-15 are schematic views of the construction of the rear cover in the dispenser of FIG. 1;

fig. 16 and 17 are exploded views of the dispenser of fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the use of "first," "second," and similar terms in the description and claims do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Similarly, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; similarly, "plurality" or "multiple layers" etc. means two or more than two. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

The following describes exemplary embodiments of the present application in detail with reference to the drawings. The features of the following examples and embodiments can be supplemented by or combined with each other without conflict.

The dispenser provided herein may be applied to various types of dishwashers (e.g., drawer dishwashers, clamshell dishwashers, sink dishwashers, etc.) for automatically supplying an appropriate amount of detergent and/or brightener to a wash chamber.

The dishwasher has a washing chamber and a dispenser. The washing chamber may be defined by a plurality of walls. One or more of the plurality of panels are provided in a movable fashion, such as translatable, rotatable, or the like. After opening the wall, the dishes to be cleaned can be placed in the washing compartment. After closing the wall panel, the dishwasher may be activated to clean the dishes. The dispenser may be disposed in one of the wall panels. The dispenser may be used to deliver detergent and/or brightener to the washing chamber in predetermined amounts over a predetermined time to improve the washing of the dishes. The detergent outlet and/or the brightener outlet of the dispenser may be in direct communication with the washing chamber or in communication via a conduit such that the detergent and/or brightener dispensed by the dispenser may reach the washing chamber.

As shown in fig. 1 to 17, the dispenser 100 may include a housing 2 and first and

second valves

60 and 70 installed in the housing 2. The housing 2 may be assembled from a base 30, a front cover 40 and a rear cover 50. The front end surface of the base 30 is provided with a mounting hole 32, and a front cover 40 may be assembled at the mounting hole 32. The base 30 may include a first plate portion 34 and a first rib 36 integrally formed with the first plate portion 34. The rear cover 50 may include a second plate portion 54 and a second rib 56 integrally formed with the second plate portion 54. The front cover 40 may include a third plate portion 44 and a third rib 46 integrally formed with the third plate portion 44. The first plate portion 34, the second plate portion 54 and the third plate portion 44 may have a flat plate shape, and may have other shapes, which are not limited herein. The rear cover 50 may be assembled to the rear end surface of the base 30. A knob 80 for controlling the brightener and a switch 90 for controlling the dispenser 100 may be assembled on the front end face of the housing 2.

The housing 2 has formed therein a first chamber 2a, a second chamber 2b, a third chamber 2c, and a buffer chamber 26. The first and

second chambers

2a and 2b may be pre-loaded with a small amount of detergent, wherein the detergent in the first chamber 2a may be less than the detergent in the second chamber 2 b. The detergent may be in the form of a powder, granules or a solid. A large amount of brightener may be pre-disposed in the third chamber 2 c. The brightener may be in liquid form.

A plurality of flow passages, for example, a third flow passage 21, a first flow passage 23, a second flow passage 25, a fourth flow passage 27, and the like are also formed in the housing 2. The first region 212 of the third flow channel 21 is connected to a liquid inlet (not shown). The second region 214 of the third flow passage 21 may selectively communicate with the first region 232 of the first flow passage 23 and the first region 252 of the second flow passage 25 via the first valve 60. The second region 234 of the first flow passage 23 may communicate with the first chamber 2 a. The second region 254 of the second flow passage 25 may communicate with the second chamber 2 b.

It should be noted that the term "a" and "B" as used herein are not necessarily used to describe that a and B are connected to each other at every moment. A and B are considered to conform to the expression "A and B are in communication" as long as they are able to communicate at a certain time or times. For example, a valve is arranged between an object A and an object B, and when the valve is opened, the A and the B are communicated; when the valve is closed, A is not communicated with B. The above example pertains to the case where a and B are linked together as described in the present application.

The first chamber 2a, the second chamber 2b, the third chamber 2c, the buffer chamber 26, the third flow passage 21, the first flow passage 23, the second flow passage 25, the fourth flow passage 27, and the like may be defined by the first plate portion 34, the first rib 36, the second plate portion 54, and the second rib 56. The third plate portion 44 and the third rib 46 of the front cover 40 may together define a first valve receiving cavity and a second valve receiving cavity for receiving the first valve 60 and the second valve 70.

During the pre-wash phase, the first valve 60 is placed in the first state (non-energized state) such that the second region 214 of the third flow passage 21 is in communication with the first region 232 of the first flow passage 23 (while the second region 214 of the third flow passage 21 is not in communication with the first region 252 of the second flow passage 25). In this state, external liquid (e.g. tap water) can enter the third flow passage 21 through the liquid inlet, and then enter the first cavity 2a from the third flow passage 21, and carry the detergent in the first cavity 2a to enter the washing chamber of the dishwasher through the detergent outlet. The detergent from the first chamber 2a contributes to the pre-washing operation of the dishes. The pre-wash stage removes debris from the dishes.

In the main wash stage, the first valve 60 is placed in the second state (energized state) so that the second region 214 of the third flow passage 21 is in communication with the first region 252 of the second flow passage 25 (at the same time, the second region 214 of the third flow passage 21 is not in communication with the first region 232 of the first flow passage 23). In this state, external liquid (e.g. tap water) can enter the third flow passage 21 through the liquid inlet, and then enter the second chamber 2b from the third flow passage 21, and carry the detergent in the second chamber 2b to enter the washing chamber of the dishwasher through the detergent outlet. The detergent from the second chamber 2b contributes to the main washing operation of the dishes. The main wash stage typically occurs after the pre-wash stage, and the dishes are substantially cleaned.

It is noted that the detergent outlet corresponding to the first chamber 2a and the detergent outlet corresponding to the second chamber 2b may be the same outlet or two different outlets. And are not limited herein.

It is generally necessary to provide a relatively large switching force to effect movement of the spool within the first valve 60 and thus switching of the first valve 60 between the first and second states. Excessive switching force may be required to cause the first valve 60 to fail to operate properly. The required switching force can be reduced by appropriately arranging the third flow passage 21, the first flow passage 23, and the second flow passage 25. For example, by setting the cross-sectional area of the junction 21f of the third flow passage 21 and the first valve 60 to be smaller than the cross-sectional area of the junction 23f of the first flow passage 23 and the first valve 60 and the cross-sectional area of the junction 25f of the second flow passage 25 and the first valve 60, the switching force required for switching the state of the first valve 60 can be reduced. Generally, the larger the cross-sectional area of the junction 23f of the first flow passage 23 and/or the cross-sectional area of the junction 25f of the second flow passage 25, the smaller the switching force required, as compared to the cross-sectional area of the junction 21f of the third flow passage 21.

More specifically, the above-described relationship in the size of the cross-sectional area can be achieved by setting the width W1 of the third flow passage 21 at the junction 21f to be smaller than the width W3 of the first flow passage 23 at the junction 23f and the width W5 of the second flow passage 25 at the junction 25 f. It will be readily appreciated that in other embodiments, the above-described relationship of cross-sectional area sizes may be achieved by configuring other dimensions (e.g., height). And are not limited herein.

The first valve 60 may be a direct acting solenoid (directional) valve. The first valve 60 may include a valve seat 63, a valve element 65 movable relative to the valve seat 63, and a seal 67 mounted to the valve element 65 and movable with the valve element 65. The seal 67 may be provided with a first contact 672 and a second contact 674. It will be readily appreciated that the seal 67 may also be integrally formed with the valve core 65, and is not limited thereto.

The first valve 60 has an inlet end 601 communicating with the third flow passage 21, a first outlet end 603 communicating with the first flow passage 23, and a second outlet end 605 communicating with the second flow passage 25.

The valve spool 65 may move upward until the first contact portion 672 contacts and blocks the second flow passage 25, as shown in fig. 5. At this time, the first valve 60 is in the first state. The third flow passage 21 communicates with the first flow passage 23 through the inlet end 601 and the first outlet end 603. The second flow passage 25 does not communicate with the third flow passage 21.

The valve member 65 can move downward until the second contact portion 674 contacts the stop surface 632 of the valve seat 63, in which state the first outlet port 603 and the inlet port 601 are blocked by the sealing member 67, and the first flow passage 23 is not communicated with the third flow passage 21; the third flow passage 21 communicates with the second flow passage 25 through the inlet end 601 and the second outlet end 605. At this time, the first valve 60 is in the second state.

The contact between the first contact portion 672 of the seal 67 and the second flow passage 25 of the housing 2 may be either surface contact or line contact. The contact between the second contact portion 674 of the seal 67 and the valve seat 63 may be a surface contact or a line contact.

The term "line contact" as used herein means that the entire contact area thereof has a linear shape such as a straight line or a curved line. Contact areas that are nearly linear in shape and whose effect is considered by those skilled in the art to approximate linear contact may also be considered "line contact" as referred to herein.

The surface corresponding to the surface contact can be a conical surface, a spherical surface, a cylindrical surface and the like. And are not limited herein.

The above-mentioned contact of the seal 67 with the valve seat 63 and/or the housing 2 is a line contact, which further reduces the force required for switching the first valve 60. When the sealing member 67 is in surface contact with the valve seat 63 and/or the housing 2, the sealing performance can be improved, and the sealing effect of the sealing member 67 on the second flow passage 25 and/or the first flow passage 23 can be ensured. Generally, the larger the area of contact, the better the sealing effect.

The first flow passage 23 may communicate with the first chamber 2a through one or more first communication holes 235. A sectional area of the first communication hole 235 at a connection with the first flow passage 23 (simply referred to as a sectional area S1) may be greater than or equal to a sectional area of the first communication hole 235 at a connection with the first chamber 2a (simply referred to as a sectional area S2). With the above arrangement, it is ensured that the liquid entering the first chamber 2a from the first flow passage 23 has a high flow rate and impact force, so that the detergent disposed in the first chamber 2a can be sufficiently carried to the washing chamber by the liquid. This is advantageous in securing the washing effect. In general, the larger the cross-sectional area S1 is, the higher the flow rate of the liquid entering the first chamber 2a from the first flow passage 23 is, the larger the impact force is, as compared with the cross-sectional area S2.

The second flow channel 25 may communicate with the second chamber 2b through one or more second communication holes 255. A sectional area of the second communication hole 255 at a connection with the second flow passage 25 (simply referred to as a sectional area S3) may be greater than or equal to a sectional area of the second communication hole 255 at a connection with the second chamber 2b (simply referred to as a sectional area S4). With the above arrangement, it is ensured that the liquid entering the second chamber 2b from the second flow passage 25 has a high flow rate and impact force, so that the detergent disposed in the second chamber 2b can be sufficiently carried to the washing chamber by the liquid. This is advantageous in securing the washing effect. Generally, the larger the cross-sectional area S3 is compared to the cross-sectional area S4, the higher the flow rate of the liquid entering the second chamber 2b from the second flow passage 25, and the larger the impact force.

The cross sections of the first and second communication holes 235 and 255 may be circular. Specifically, the first communication hole 235 and/or the second communication hole 255 may have a truncated cone shape (as shown in fig. 6), a cylindrical shape (as shown in fig. 7), a combined shape of a truncated cone shape and a cylindrical shape (as shown in fig. 8). It is easily understood that the first and second communication holes 235 and 255 may have any other shapes in other embodiments.

The buffer chamber 26 may selectively communicate with the third chamber 2c and the fourth flow passage 27 through the second valve 70. In the first state (non-energized state) of the second valve 70, the buffer chamber 26 is not communicated with the third chamber 2c, and the buffer chamber 26 is communicated with the fourth flow passage 27. In the second state (energized state) of the second valve 70, the buffer chamber 26 communicates with the third chamber 2c, and the buffer chamber 26 does not communicate with the fourth flow passage 27.

During the polishing stage, the second valve 70 may be first placed in the second state to place the third chamber 2c in communication with the buffer chamber 26, whereby a quantity of polishing agent may enter the buffer chamber 26 from the third chamber 2 c. Thereafter, the second valve 70 may be placed in the first state, such that the third chamber 2c is not communicated with the buffer chamber 26, and the buffer chamber 26 is communicated with the fourth flow passage 27, whereby the brightener in the buffer chamber 26 may enter the fourth flow passage 27 and further enter the washing chamber of the dishwasher through the brightener outlet. The shine stage typically occurs after the main wash stage for maintaining the cleanliness, gloss, and color fastness of the dishware, among other things.

With the second valve 70 opened and closed, a constant amount of brightener from the third chamber 2c always enters the buffer chamber 26. The quantity of brightener may be adapted to the operation of the primary brightening stage. When the next brightening stage is to be started, the second valve 70 is operated again without manually adding brightener again.

The volume of the third chamber 2c can be enlarged as much as possible to store a larger amount of brightener and reduce the replenishment frequency of the brightener. For example, the volume of the third chamber 2c may be increased by increasing the thickness of the housing 2 at which the third chamber 2c is located, as shown in fig. 1 and 2.

The upper end 263 of the buffer chamber 26 may communicate with the upper end of the third chamber 2c, whereby the air pressure of the buffer chamber 26 and the third chamber 2c may be equalized. Because of the equal air pressure, the brightener in the third chamber 2c can automatically enter the buffer chamber 26 when the buffer chamber 26 and the third chamber 2c are communicated through the second valve 70. The brightener in the third chamber 2c cannot enter the buffer chamber 26 through this communication at the upper end.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A dispenser, characterized in that the dispenser (100) comprises:

the device comprises a shell (2), wherein a first cavity (2a), a second cavity (2b), a first flow passage (23) communicated with the first cavity (2a), a second flow passage (25) communicated with the second cavity (2b) and a third flow passage (21) are formed in the shell;

a first valve (60) having a first state in which the first valve communicates the third flow passage with the first flow passage and a second state; in the second state, the first valve communicates the third flow passage with the second flow passage;

wherein the cross-sectional area of the junction (21f) of the third flow channel (21) and the first valve (60) is smaller than the cross-sectional area of the junction (23f) of the first flow channel (23) and the first valve (60) and/or the cross-sectional area of the junction (25f) of the second flow channel (25) and the first valve (60).

2. A distributor as claimed in claim 1, wherein the width of the third flow channel (21) at the junction (21f) is smaller than the width of the first flow channel (23) at the junction (23f) and the width of the second flow channel (25) at the junction (25 f).

3. A dispenser as claimed in claim 1, characterized in that the first valve (60) comprises a valve seat (63), a valve element (65) which is movable relative to the valve seat and a sealing element (67) which is connected to the valve element and is movable therewith, the sealing element (67) being movable in the first state and the second state of the first valve to block the second flow channel (25), the first flow channel (23) by contact with the valve seat and/or the housing (2), the contact of the sealing element with the valve seat and/or the housing (2) being line contact or surface contact.

4. A distributor according to claim 1, wherein the first flow channel (23) communicates with the first chamber (2a) through a first communication hole (235) having a cross-sectional area at the junction with the first flow channel greater than or equal to that of the first communication hole at the junction with the first chamber;

and/or the second flow channel (25) is communicated with the second cavity (2b) through a second communication hole (255), and the cross-sectional area of the second communication hole at the joint of the second flow channel is larger than or equal to that of the second communication hole at the joint of the second flow channel and the second cavity.

5. A dispenser as claimed in claim 1, characterized in that a detergent is provided in the first chamber (2a) and/or in the second chamber (2 b).

6. The dispenser according to claim 1, wherein a third chamber (2c), a buffer chamber (26) and a fourth flow passage (27) are further formed in the housing (2);

the dispenser (100) further comprises a second valve (70), the second valve (70) having a first state and a second state, in the first state, the second valve (70) communicating the buffer chamber (26) with the fourth flow passage (27); in the second state, the second valve (70) communicates the buffer chamber (26) with the third chamber (2 c).

7. The dispenser according to claim 6, wherein the upper end (263) of the buffer chamber (26) communicates with the upper end of the third chamber (2 c).

8. A dispenser according to claim 6, characterized in that a brightener is arranged in the third chamber (2 c).

9. The dispenser according to claim 1, characterized in that said casing (2) comprises a base body (30), a front cover (40) and a rear cover (50), said front cover (40) being assembled on a front end face of said base body (30) and said rear cover (50) being assembled on a rear end face of said base body (30);

the base body (30) comprises a first plate body portion (34) and a first convex rib (36) integrally formed on the first plate body portion (34), the rear cover (50) comprises a second plate body portion (54) and a second convex rib (56) integrally formed on the second plate body portion (54), and the first plate body portion (34), the first convex rib (36), the second plate body portion (54) and the second convex rib (56) jointly enclose the first cavity (2a), the second cavity (2b), the first flow channel (23), the second flow channel (25) and the third flow channel (21).

10. The dispenser of claim 1, wherein the first valve (60) is a direct-acting solenoid valve.

11. A dishwasher, characterized in that it has a washing chamber and a dispenser (100) according to any one of claims 1 to 10, the detergent outlet and/or brightener outlet of which communicates with the washing chamber directly or via a line.