Kitchen garbage disposer

Abstract

A kitchen garbage disposer comprises: a housing having a crushing chamber inside; the crushing part is arranged in the crushing cavity; the guide cylinder is vertically arranged in the crushing cavity and above the crushing part, the outer side circumferential surface of the guide cylinder faces the side wall of the crushing cavity, the outer side circumferential surface is provided with an upper side part, a lower side part and a middle part, the middle part is opposite to the side wall of the crushing cavity at intervals to form an annular cavity with a water inlet hole, and the guide cylinder is provided with a water outlet hole; the upper side part of the peripheral surface of the outer side of the guide cylinder and the corresponding side wall of the crushing cavity are restrained together through a detachable component, and the lower side part of the peripheral surface of the outer side of the guide cylinder is attached to the corresponding side wall of the crushing cavity; the sealing ring is sleeved on the periphery of the upper side part of the outer side peripheral surface of the guide cylinder along the circumferential direction, and the inner side peripheral edge and the outer side peripheral edge of the sealing ring are respectively contacted with the corresponding upper side part of the outer side peripheral surface of the guide cylinder and the side wall of the crushing cavity. According to the utility model, the stability of the assembly structure between the self-cleaning component and the crushing cavity can be ensured while the self-cleaning function is realized.

Description

Technical Field

[0001] This utility model belongs to the field of waste treatment technology, specifically relating to a kitchen waste processor. Background Technology

[0002] Existing food waste disposers generally include a housing with an inlet and an outlet, a shredder inside the housing, and a drive mechanism for driving the shredder. The shredder, driven by the drive mechanism, can shred the food waste that enters from the inlet.

[0003] Specifically, the Chinese utility model patent "A Kitchen Waste Processor" with patent number 202221965311.8 and authorization announcement number CN218292145U includes a housing and a grinding hood. A grinding disc is installed inside the grinding hood. The grinding hood includes an upper grinding hood and a lower grinding hood. A feeding port is opened at the top of the upper grinding hood, and a discharge port is opened on the lower grinding hood. An annular wall is installed on the inner peripheral wall of the lower side of the upper grinding hood. The annular wall is located above the grinding disc, and an annular cavity is formed between the annular wall and the upper grinding hood. A water inlet connected to the annular cavity is opened on the outer peripheral wall of the upper grinding hood. A water outlet is opened on the inner wall of the annular cavity. An annular cutter that can rotate under water pressure is installed in the annular cavity.

[0004] For example, the Chinese utility model patent "A Kitchen Waste Treatment System" with patent number 202321652436.X and authorization announcement number CN220538788U includes a sink and a garbage disposal unit located below the sink. The garbage disposal unit includes a grinding chamber and a grinding disc located inside the grinding chamber. The grinding chamber has a discharge port located below the grinding disc. The bottom of the sink has a stepped structure, and the top of the stepped structure has a main feeding port with a feeding cover installed on it. The top of the grinding chamber is installed on the main feeding port.

[0005] Existing food waste disposers generally use the method of turning on the sink faucet to introduce water, which, together with the grinding component, crushes and grinds the waste, thus processing it and discharging the processed waste. Some food waste disposers also use valves such as solenoid valves to automatically introduce water into the cavity. This method of water introduction is more convenient, requires no manual operation, and automatically shuts off the water after the work is completed, saving time and effort.

[0006] After a food waste disposer processes food waste, some food residue remains on the inner wall of the grinding chamber, which can become moldy and smelly over time. Current water intake methods for food waste disposers cannot effectively clean the chamber walls.

[0007] To address this, Chinese invention patent application No. 202210601189.4, entitled "A Kitchen Waste Processor" (publication No. CN117181374A), discloses a kitchen waste processing device, including a housing and a grinding hood. A grinding disc is installed inside the grinding hood. A feeding port is located at the top of the grinding hood, and a discharge port is located at the bottom. A fixed sprayer is installed inside the grinding hood, positioned above the grinding disc. The fixed sprayer has circumferentially distributed water outlets. A water inlet cavity is formed between the fixed sprayer and the inner wall of the grinding hood. A water inlet communicating with the water inlet cavity is located on the grinding hood. A rotating disc is installed inside the water inlet cavity. The rotating disc rotates under the action of the water flowing in from the water inlet, and the rotation direction of the rotating disc is opposite to that of the grinding disc. During operation, the water flow in the water inlet cavity creates a spraying effect through the water outlets on the fixed sprayer. The water flow is directly sprayed onto the grinding working area, agitating the kitchen waste and improving the grinding effect. At the same time, the spray water can also be sprayed onto the inner wall of the grinding hood, washing away the kitchen waste that has been splashed onto the inner wall of the grinding hood by the grinding disc, thus playing a self-cleaning role.

[0008] Adding a ring-shaped sprayer to create a ring-shaped water flow for cleaning is crucial, but the key lies in the assembly between the sprayer and the grinding chamber. This includes the installation and fixing of the sprayer, whether a seal is formed between it and the grinding chamber, and whether the connection structure between the sprayer and the grinding chamber will be damaged under the working conditions of processing hard kitchen waste such as bones. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a food waste disposer that can be self-cleaning while ensuring the stability of the assembly structure between the self-cleaning component and the pulverizing chamber, in light of the current state of the technology.

[0010] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a kitchen waste disposer, comprising:

[0011] The machine casing has a grinding chamber inside, with a feed inlet at the top and a discharge outlet at the bottom. The side wall of the grinding chamber is provided with a water inlet for external water to enter.

[0012] A shredder is disposed inside the shredding chamber and can work under the drive of the drive mechanism to shred kitchen waste entering from the feed inlet;

[0013] A guide tube is vertically disposed inside the grinding chamber and above the grinding components. The inner circumferential surface of the guide tube defines a channel for food waste to pass through. The outer circumferential surface of the guide tube faces the side wall of the grinding chamber and has an upper part, a lower part, and a middle part located between the upper and lower parts. The middle part is spaced apart from the side wall of the grinding chamber to form an annular cavity with the aforementioned water inlet hole. The guide tube is provided with a water outlet hole to connect the annular cavity and the channel.

[0014] Its features are:

[0015] The upper part of the outer circumference of the guide tube is constrained to the corresponding crushing chamber sidewall by a detachable component, and the lower part is in contact with the corresponding crushing chamber sidewall.

[0016] It also includes:

[0017] The sealing ring is circumferentially fitted around the outer periphery of the upper part of the outer circumferential surface of the guide tube, and the inner and outer peripheries of the sealing ring are in contact with the upper part of the corresponding outer circumferential surface of the guide tube and the side wall of the crushing chamber, respectively.

[0018] This invention enables the guide tube to be assembled into the grinding chamber, and the sealing ring between the upper part of the outer circumference of the guide tube and the side wall of the grinding chamber, and the close fit between the lower part of the outer circumference of the guide tube and the side wall of the grinding chamber, ensure the sealing between the guide tube and the side wall of the grinding chamber, preventing water in the annular cavity from leaking from the upper and lower sides of the guide tube. All water in the annular cavity is sprayed into the grinding chamber through the water outlet to clean the inside of the grinding chamber. At the same time, since the sealing ring and the detachable component are built into the outer circumference of the guide tube and the side wall of the grinding chamber, there is no need to worry about them being damaged by hard kitchen waste, thus ensuring the stability of the assembly structure between the guide tube and the side wall of the grinding chamber.

[0019] Preferably, the upper part of the outer circumferential surface of the guide tube is provided with a circumferentially extending annular groove for the sealing ring to be disposed therein.

[0020] Preferably, the upper and lower portions of the outer circumferential surface of the guide tube extend vertically, and the upper and lower portions of the sidewall of the crushing chamber corresponding to the outer circumferential surface of the guide tube also extend vertically.

[0021] Furthermore, the middle portion of the outer circumference of the guide tube slopes upwards towards the center of the guide tube, and the outer diameter of the upper portion of the outer circumference of the guide tube is smaller than the outer diameter of the lower portion. The guide tube's smaller upper outer diameter and larger lower outer diameter facilitates its assembly into the grinding chamber. Simultaneously, the channel formed by the guide tube itself has a smaller upper diameter and a larger lower diameter, which facilitates the downward passage of kitchen waste and prevents it from splashing upwards during the grinding process.

[0022] Furthermore, the sidewall of the pulverizing chamber has:

[0023] The first annular wall extending upward corresponds to the lower part of the outer circumferential surface of the guide tube;

[0024] The second annular wall, which slopes upward from the upper edge of the first annular wall and towards the center of the crushing chamber, corresponds to the middle part of the outer circumferential surface of the guide tube;

[0025] The third annular wall extends upward from the upper edge of the second annular wall, corresponding to the upper part of the outer circumferential surface of the guide tube.

[0026] In the above arrangement, preferably, the detachable component is located above the sealing ring. This prevents water within the annular cavity from affecting the detachable component.

[0027] For ease of assembly, preferably, the sidewall of the crushing chamber is annular, and the detachable component includes:

[0028] A circumferentially extending strip groove and a protrusion are selectively disposed on the upper part of the outer circumferential surface of the guide tube and the sidewall of the crushing chamber, respectively. The strip groove has a circumferentially extending groove wall, a first end of which has a notch for the protrusion to pass through, and a second end of which is closed, so that the protrusion entering the strip groove through the notch can move along the strip groove to the second end of the groove wall. During installation, the guide tube can be locked relative to the sidewall of the crushing chamber by rotating it.

[0029] To further improve structural stability, preferably, there are at least two detachable components arranged circumferentially at intervals, and at least one of the strip grooves has a limiting protrusion on its groove wall, located between the first end and the second end of the groove wall. The limiting protrusion can prevent the guide tube from accidentally rotating and detaching from the strip groove.

[0030] Preferably, the detachable component includes a slot and a buckle, one of which is selectively provided on the upper part of the outer circumferential surface of the guide tube and the sidewall of the crushing chamber, respectively, so that the guide tube is engaged with the sidewall of the crushing chamber. This facilitates the assembly and disassembly of the guide tube while also improving the stability of the overall structure.

[0031] Preferably, the matching slots and buckles are arranged as a group, with at least two groups and spaced apart along the circumference.

[0032] In the above-mentioned schemes, preferably, the water outlet is inclined upwards.

[0033] Preferably, there are at least two water outlet holes, which are spaced apart circumferentially along the guide tube.

[0034] Compared with the prior art, the advantages of this utility model are as follows: This utility model can realize the assembly of the guide tube into the crushing chamber, and the setting of the sealing ring between the upper part of the outer circumference of the guide tube and the side wall of the crushing chamber, and the close fit between the lower part of the outer circumference of the guide tube and the side wall of the crushing chamber, and ensure the sealing between the guide tube and the side wall of the crushing chamber, preventing water in the annular cavity from leaking from the upper and lower sides of the guide tube. The water in the annular cavity is sprayed into the crushing chamber through the water outlet to achieve the cleaning of the inside of the crushing chamber; at the same time, since the sealing ring and the detachable component are built between the outer circumference of the guide tube and the side wall of the crushing chamber, there is no need to worry about them being damaged by hard kitchen waste, thus ensuring the stability of the assembly structure between the guide tube and the side wall of the crushing chamber. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0036] Figure 2 This is a longitudinal sectional view of Embodiment 1 of the present utility model;

[0037] Figure 3 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0038] Figure 4 This is another cross-sectional view of Embodiment 1 of the present invention;

[0039] Figure 5 This is a schematic diagram of the flow guide tube according to Embodiment 1 of this utility model;

[0040] Figure 6 This is a longitudinal sectional view of the guide tube according to Embodiment 1 of this utility model;

[0041] Figure 7 This is a longitudinal sectional view of the side wall of the crushing chamber in Embodiment 1 of this utility model;

[0042] Figure 8 This is another cross-sectional view of Embodiment 1 of the present invention;

[0043] Figure 9 This is a longitudinal sectional view of Embodiment 2 of the present invention;

[0044] Figure 10 This is a cross-sectional view of Embodiment 2 of the present invention. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Example 1:

[0047] like Figures 1-8As shown, this is a preferred embodiment of a kitchen waste disposer of the present invention. The kitchen waste disposer includes a shell 1, a crushing component 2, a driving mechanism 3, a guide tube 4, and a sealing ring 5.

[0048] The housing 1 has a grinding chamber 10 inside. The top of the grinding chamber 10 has an upward-facing feed inlet 10a, the lower side wall of the grinding chamber 10 has a discharge outlet 10b, and the upper side wall of the grinding chamber 10 has a water inlet hole 10c for external water to enter. In this embodiment, the upper side wall of the grinding chamber 10 is annular, having an upward-extending first annular wall 11, a second annular wall 12 extending upward from the upper edge of the first annular wall 11 and inclined towards the center of the grinding chamber 10, a third annular wall 13 extending upward from the upper edge of the second annular wall 12, and a fourth annular wall 14 extending horizontally towards the center of the grinding chamber 10 from the upper edge of the third annular wall 13.

[0049] The aforementioned crushing component 2 is disposed within the crushing chamber 10 and can operate under the drive of the drive mechanism 3 to crush the kitchen waste entering from the feed inlet 10a. In this embodiment, the drive mechanism 3 is a motor, and the crushing component 2 is an existing grinding disc. The grinding disc rotates around its own vertically extending axis under the drive of the motor output shaft to crush the kitchen waste entering from the feed inlet 10a.

[0050] The guide tube 4 is vertically positioned inside the grinding chamber 10, above the grinding element 2. The inner circumferential surface of the guide tube 4 defines a channel 40 for the passage of kitchen waste. The flow area of ​​the channel 40 gradually increases from top to bottom. The outer circumferential surface of the guide tube 4 faces the side wall of the grinding chamber 10 and has a vertically extending upper portion 41, a vertically extending lower portion 42, and a middle portion 43 located between the upper and lower portions. The middle portion 43 is inclined from bottom to top towards the center of the guide tube 4. The outer diameter of the upper portion 41 is smaller than the outer diameter of the lower portion 42.

[0051] The upper portion 41 is opposite to the third annular wall 13 of the crushing chamber 10 and the two are constrained together by a detachable component 6. The detachable component 6 includes a circumferentially extending strip groove 61 and a protrusion 62. The strip groove 61 is located on the upper portion 41 of the outer circumferential surface of the guide tube 4, and the strip groove 61 has a groove wall 610 arranged one above the other and extending circumferentially. The first end of the upper groove wall 610 has a notch 611 for the protrusion 62 to pass through, and the second end of the upper groove wall 610 is closed, so that the protrusion 62 entering the strip groove 61 through the notch 611 can move along the strip groove 61 to the second end of the groove wall (in this embodiment, the first end and the second end of the groove wall 610 are arranged in a counterclockwise direction). At the same time, in this embodiment, there are two detachable components 6, which are arranged circumferentially at intervals. One of the strip grooves 61 has a limiting protrusion 612 on the upper groove wall 610, such as Figure 6As shown, the limiting protrusion 612 is located between the first end and the second end of the groove wall 610 to prevent the protrusion 62 from accidentally dislodging from the strip groove 61. During installation, the guide tube is moved upward so that the notch 611 on the guide tube allows the corresponding protrusion 62 to pass through and enter the strip groove 61. Then, the guide tube is rotated clockwise so that the protrusion 62 passes over the limiting protrusion 612.

[0052] Meanwhile, the upper part 41 is provided with a circumferentially extending annular groove 411 for the sealing ring 5 to be placed therein, and the inner and outer peripheries of the sealing ring 5 are in contact with the upper part 41 of the corresponding outer periphery of the guide tube 4 and the side wall of the crushing chamber 10, respectively. The sealing ring 5 is located below the detachable component 6. The lower part 42 is in contact with the first annular wall 11 of the crushing chamber 10. The middle part 43 is spaced apart from the second annular wall 12 of the crushing chamber 10 to form an annular cavity 400 with the aforementioned water inlet hole 10c, and the upper part of the guide tube 4 is provided with three water outlet holes 44 at equal intervals along the circumference to connect the annular cavity 400 and the channel 40. Each water outlet hole 44 is inclined upwards, and the upward inclination angle b of the water outlet hole 44 relative to the horizontal surface is 50-60° (the inclination angle b can be any value between 50-60°, such as 50°, 55°, 60°, etc.), please see details. Figure 6 The tilt angle b ensures that the water flow reaches the inner surface of the feed inlet 10a at the top of the crushing chamber. Simultaneously, as... Figure 4 As shown, the extension direction of the water outlet 44 is arranged at an angle α with the radial direction of the corresponding guide tube 4, so that the orientation of each water outlet 44 is arranged in a clockwise or counterclockwise spiral direction in the circumferential direction, and the included angle α is 30-40° (the included angle α can be any value between 30-40°, such as 30°, 35°, 40°, etc.). The included angle α ensures that the water flows along the side wall of the crushing chamber to form an annular flow. At the same time, the water outlet 44 in this embodiment is a parallelogram, with the short side of the parallelogram extending along the circumference of the guide tube 4 and the long side extending along the longitudinal direction of the guide tube 4. Along the water flow direction, the flow area on the cross-section of the water outlet 44 gradually decreases. Specifically, the size of the water inlet end of the water outlet is 10×5mm, the size of the water outlet end is 5×2.5mm, and the sum of the water outlet end areas of the three water outlets 44 is 37.5mm². 2 The water inlet area of ​​inlet hole 10c is 111.3 mm². 2 It is exactly three times the sum of the outlet areas of the three outlet holes 44 (of course, in this embodiment, the inlet area of ​​the inlet hole 10c can be increased or the outlet area of ​​the outlet hole 44 can be decreased to satisfy that the inlet area of ​​the inlet hole 10c is three to four times the sum of the outlet areas of each outlet hole 44). This is equivalent to pressurizing the water in the annular cavity 400, so that the water will be sprayed out obliquely upward and will not sink under the action of gravity.

[0053] At the same time, such as Figure 8As shown, the water inlet 10c extends tangentially along the annular cavity 400 so that the water entering through the water inlet 10c can flow clockwise or counterclockwise along the annular cavity 400. In this embodiment, the water flows clockwise within the annular cavity 400, and the flow direction corresponds to the clockwise arrangement of the second end and the first end of the aforementioned tank wall 610. That is, the flow direction of the water within the annular cavity 400 is the same as the tightening direction of the guide tube 4. This design ensures that the assembly between the guide tube and the side wall of the crushing chamber becomes increasingly tight, preventing the guide tube from accidentally detaching from the side wall of the crushing chamber.

[0054] Example 2:

[0055] like Figure 9 , 10 The image shows a preferred embodiment of the food waste disposer of this utility model. This embodiment is basically the same as the first embodiment, except that the detachable component 6 in this embodiment includes a slot 63 and a buckle 64, which are respectively disposed on the upper part 41 of the outer circumferential surface of the guide tube 4 and the side wall of the crushing chamber 10, so that the guide tube 4 is engaged with the side wall of the crushing chamber 10. In this embodiment, the matching slots 63 and buckles 64 are grouped into two groups and arranged at equal intervals along the circumference.

[0056] In the specification and claims of this utility model, terms indicating direction, such as "upper," "lower," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only 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.

[0057] The term "vertical" is also used in the specification and claims of this utility model, meaning basically along the up and down direction, and is not limited to just the vertical direction, but can also be slightly deviated from the vertical direction.

[0058] The term "radial" is also used in the specification and claims of this utility model, meaning basically along the inside and outside direction, and is not limited to the radial direction that passes through the center of the circle, but can also be slightly deviated from the radial direction.

Claims

1. A kitchen garbage disposer comprising: a housing (1) having a crushing chamber (10) inside, an upper portion of the crushing chamber (10) having an inlet (10a), a lower portion of the crushing chamber (10) having an outlet (10b), and a side wall of the crushing chamber (10) having a water inlet hole (10c) for water from outside to enter; a crushing element (2) arranged in the crushing chamber (10) and capable of crushing kitchen garbage entering from the inlet (10a) under the drive of a drive mechanism (3); a flow guide cylinder (4) vertically arranged above the crushing element (2) in the crushing chamber (10), an inner side surface of the flow guide cylinder (4) defining a passage (40) for kitchen garbage to pass through, an outer side surface of the flow guide cylinder (4) facing the side wall of the crushing chamber (10), and the outer side surface having an upper portion (41), a lower portion (42), and an intermediate portion (43) between the upper and lower portions, the intermediate portion (43) being spaced from the side wall of the crushing chamber (10) to form an annular chamber (400) with the water inlet hole (10c), and the flow guide cylinder (4) being provided with a water outlet hole (44) to communicate the annular chamber (400) with the passage (40); characterized in that: the upper portion (41) of the outer side surface of the flow guide cylinder (4) is constrained together with the corresponding side wall of the crushing chamber (10) by a detachable component (6), and the lower portion (42) is attached to the corresponding side wall of the crushing chamber (10); further comprising: a sealing ring (5) circumferentially sleeved on the outer periphery of the upper portion (41) of the outer side surface of the flow guide cylinder (4), and the inner and outer side edges of the sealing ring (5) being in contact with the corresponding upper portion (41) of the outer side surface of the flow guide cylinder (4) and the side wall of the crushing chamber (10), respectively.

2. The garbage disposer of claim 1, wherein: The upper portion (41) of the outer side surface of the flow guide cylinder (4) is provided with a circumferentially extending annular groove (411) for the sealing ring (5) to be arranged therein.

3. The garbage disposer of claim 1, wherein: The upper and lower portions of the outer side surface of the flow guide cylinder (4) both vertically extend, and the side wall of the crushing chamber (10) also vertically extends corresponding to the upper and lower portions of the outer side surface of the flow guide cylinder (4).

4. The garbage disposer of claim 3, wherein: The intermediate portion (43) of the outer side surface of the flow guide cylinder (4) is inclined from bottom to top towards the center of the flow guide cylinder (4), and the outer diameter of the upper portion (41) of the outer side surface of the flow guide cylinder (4) is smaller than that of the lower portion (42).

5. The garbage disposer of claim 4, wherein: The side wall of the crushing chamber (10) has: a first annular wall (11) extending upward corresponding to the lower portion (42) of the outer side surface of the flow guide cylinder (4); a second annular wall (12) inclined upward from the upper edge of the first annular wall (11) and towards the center of the crushing chamber (10) corresponding to the intermediate portion (43) of the outer side surface of the flow guide cylinder (4); a third annular wall (13) extending upward from the upper edge of the second annular wall (12) corresponding to the upper portion (41) of the outer side surface of the flow guide cylinder (4).

6. The garbage disposer of claim 1, wherein: The detachable component (6) is located above the sealing ring (5).

7. The garbage disposer of claim 1, wherein: The side wall of the crushing chamber (10) is annular, and the detachable component (6) comprises: The circumferentially extending strip-shaped groove (61) and the protrusion (62) are respectively arranged on the upper side portion (41) of the outer circumferential surface of the flow guide cylinder (4) and the side wall of the pulverizing cavity (10), the strip-shaped groove (61) has a circumferentially extending groove wall (610), the first end portion of the groove wall (610) has a gap (611) for the protrusion (62) to pass through, and the second end portion of the groove wall (610) is closed, so that the protrusion (62) entering the strip-shaped groove (61) from the gap (611) can move along the strip-shaped groove (61) to the second end portion of the groove wall.

8. The garbage disposer of claim 7, wherein: The removable component (6) is at least two and is arranged in a circumferential interval, and the groove wall (610) of at least one strip-shaped groove (61) is provided with a limiting convex (612) between the first end portion and the second end portion of the groove wall (610).

9. The garbage disposer of claim 1, wherein: The removable component (6) comprises a clamping groove (63) and a clamping buckle (64), which are respectively arranged on the upper side portion (41) of the outer circumferential surface of the flow guide cylinder (4) and the side wall of the pulverizing cavity (10) to enable the flow guide cylinder (4) to be clamped with the side wall of the pulverizing cavity (10).

10. The garbage disposer of claim 9, wherein: The matched clamping groove (63) and clamping buckle (64) are a group, and there are at least two groups and are arranged in a circumferential interval.

11. The garbage disposer as described in any one of claims 1-10, wherein: The water outlet hole (44) is upwardly inclined.

12. The garbage disposer of claim 11, wherein: The water outlet hole (44) is at least two and is arranged in a circumferential interval along the flow guide cylinder (4).

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