Dishwasher and disinfection control method thereof

Abstract

The present invention relates to a dishwasher and a disinfection control method thereof. The dishwasher includes a machine body, a disinfection lamp and a spray arm mechanism. The machine body has a cleaning chamber. The disinfection lamp is arranged on the machine body, and is used to emit a first disinfection light into the cleaning chamber. The spray arm mechanism is arranged in the cleaning chamber and includes a light-guiding surface made of a light-guiding material. The disinfection lamp is configured to have a focusing state and a diverging state. When the disinfection lamp is in a diverging state, the emitted first disinfection light is divergently irradiated into the cleaning chamber. When the disinfection lamp is in a focusing state, the emitted first disinfection light is gathered and irradiated on the light-guiding surface and propagated along the light-guiding surface until the light-guiding surface as a whole forms a disinfection light source, and the disinfection light source emits a second disinfection light outward. In the above-mentioned dishwasher, the disinfection lamp switches between two states, so that the tableware can be disinfected by disinfection lights of two different azimuth angles, thereby greatly reducing the shadow area and dead angle, irradiating the tableware more comprehensively, and achieving a more sufficient disinfection effect.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a dishwasher and a disinfection control method thereof. Background Art

[0002] As people's living conditions improve, dishwashers have gradually entered ordinary households, freeing our hands and improving our quality of life. Most of the UV lamps of existing dishwashers on the market are installed on the top of the dishwasher, and the ultraviolet rays they emit play a role in disinfecting tableware.

[0003] However, the UV lamp installed on the top serves as a point light source, and the ultraviolet rays it emits are divergent. The irradiation range is relatively limited and fixed, and there are many shadow areas and dead corners that cannot be covered. Therefore, it is difficult to irradiate the surface of the tableware more comprehensively, which in turn affects the comprehensive and effective disinfection of microorganisms attached to the surface of the tableware. Summary of the invention

[0004] Based on this, it is necessary to provide a dishwasher and a disinfection control method thereof that can fully disinfect tableware in order to address the above-mentioned problems.

[0005] A dishwasher, comprising:

[0006] The machine body has a cleaning chamber;

[0007] a disinfection lamp, disposed on the body, for emitting a first disinfection light beam into the cleaning cavity; and

[0008] A spray arm mechanism, disposed in the cleaning chamber and comprising a light-guiding surface made of a light-guiding material;

[0009] Wherein, the disinfecting lamp is configured to have a divergent state and a focused state; when the disinfecting lamp is in the divergent state, the first disinfecting light emitted by the disinfecting lamp is divergently irradiated into the cleaning cavity;

[0010] When the disinfecting lamp is in a focusing state, the first disinfecting light emitted by the disinfecting lamp converges and shines on the light-guiding surface and propagates along the light-guiding surface until the light-guiding surface as a whole forms a disinfecting light source, and the disinfecting light source emits a second disinfecting light outward.

[0011] In the above-mentioned dishwasher, tableware is received in the cleaning chamber for cleaning. When disinfecting, when the disinfection lamp is in a divergent state, it directly emits a first disinfection light to disinfect the tableware. When the disinfection lamp is in a focused state, the first disinfection light emitted by it is irradiated on a light-guiding surface made of a light-guiding material, and is re-emitted as a second disinfection light to disinfect the tableware under the guidance of the light-guiding surface. The disinfection lamp switches between two states so that the tableware can be disinfected by disinfection lights of two different azimuth angles, thereby greatly reducing shadow areas and dead angles, irradiating the tableware more comprehensively, and achieving a more complete disinfection effect.

[0012] In one of the embodiments, the focal length of the disinfecting lamp is adjustable, and the disinfecting lamp can be switched between the focused state and the divergent state by adjusting the focal length.

[0013] In one embodiment, the disinfecting lamp includes a light source and a focusing lens, and the distance between the focusing lens and the light source can be controlled and adjusted.

[0014] In one embodiment, the spray arm mechanism can rotate relative to the machine body, and the spray arm mechanism includes a spray arm body and a rotating shaft. The spray arm body includes the light guiding surface, and one side of the spray arm body is connected to the rotating shaft and can rotate relative to the machine body through the rotating shaft.

[0015] In one of the embodiments, the disinfection lamp is arranged opposite to the spray arm mechanism.

[0016] In one of the embodiments, the spray arm body includes a shell, and at least the portion of the shell facing the disinfection lamp is the light-guiding surface of the spray arm mechanism.

[0017] In one embodiment, the spray arm body includes at least two sub-arms, one end of each of the sub-arms is connected to each other and to the rotating shaft, and the other end extends away from the rotating shaft.

[0018] In one of the embodiments, when the disinfection lamp is in a focusing state, the first disinfection light emitted by the disinfection lamp converges and irradiates the rotation center of the spray arm body.

[0019] In one embodiment, the light-guiding material is PMMA, PC or PS.

[0020] A method for controlling the disinfection of a dishwasher, wherein the dishwasher is the above-mentioned dishwasher, and the method for controlling the disinfection of a dishwasher comprises the following steps:

[0021] When performing a washing operation, the disinfection lamp is placed in the focusing state;

[0022] When performing the drying operation, the disinfection lamp is placed in the divergent state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a cross-sectional schematic diagram of a disinfection lamp in a dishwasher in an embodiment of the present invention in a divergent state;

[0025] Figure 2 for Figure 1 The schematic cross-sectional view of the disinfection lamp in the dishwasher shown is in a focused state and the spray arm mechanism transmits the first disinfection light;

[0026] Figure 3 for Figure 1 A cross-sectional schematic diagram of a light guide surface in a spray arm mechanism of a dishwasher emitting a second disinfection light;

[0027] Figure 4 It is a schematic flow chart of the disinfection control method in one embodiment of the present invention.

[0028] Explanation of the reference numerals: 100, dishwasher; 10, machine body; 30, disinfection lamp; 50, spray arm mechanism; 51, spray arm body; 511, light guide surface; 513, water spray hole; 515, sub-arm; 53, rotating shaft; Q, cleaning chamber. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] See also Figures 1 to 3 An embodiment of the present invention provides a dishwasher 100, comprising a body 10, a disinfection lamp 30 and a spray arm mechanism 50. The body 10 has a cleaning cavity Q. The disinfection lamp 30 is disposed on the body 10, and is used to emit a first disinfection light into the cleaning cavity Q. The spray arm mechanism 50 is disposed in the cleaning cavity Q and comprises a light guide surface 511 made of a light guide material.

[0036] The disinfecting lamp 30 is configured to have a divergent state and a focused state. When the disinfecting lamp 30 is in the divergent state, the first disinfecting light emitted by the disinfecting lamp 30 is divergently irradiated into the cleaning cavity Q. When the disinfecting lamp 30 is in the focused state, the first disinfecting light emitted by the disinfecting lamp 30 is gathered and irradiated on the light guide surface 511 and propagates along the light guide surface 511 until the light guide surface 511 forms a disinfecting light source as a whole, and the disinfecting light source emits a second disinfecting light outward.

[0037] It is not difficult to understand that the spray arm mechanism 50 is a component for performing a spraying operation in the dishwasher 100, and the disinfection lamp 30 and the spray arm mechanism 50 are arranged at different positions, and the disinfection lamp 30 is satisfied that at least the first disinfection light emitted by the disinfection lamp 30 in the focusing mode can be irradiated onto the light guide surface 511. The light guide surface 511 is the structural surface of the spray arm mechanism 50. When the disinfection lamp 30 is in the focusing state, the first disinfection light emitted and concentrated is irradiated onto a point on the light guide surface 511, and can be propagated in all directions along the light guide surface 511 made of light guide material with this point as the center, and cover the entire light guide surface 511, and at the same time can be re-emitted from different positions of the light guide surface 511 as the second disinfection light, so at this time the light guide surface 511 as a whole also serves as a disinfection light source.

[0038] The cleaning cavity Q is formed in the body 10. When the dishwasher 100 is working, the dishes are stored in the cleaning cavity Q for cleaning. In addition, in order to realize the normal function of the dishwasher 100, the dishwasher 100 may also include conventional pipelines, a driving motor, and a door connected to the cleaning cavity Q, which will not be described in detail here.

[0039] In the above-mentioned dishwasher 100, tableware is received in the cleaning cavity Q for cleaning. When disinfection is being performed, when the disinfection lamp 30 is in a divergent state, the first disinfection light is directly emitted to disinfect the tableware. When the disinfection lamp 30 is in a focused state, the first disinfection light emitted by it is irradiated on the light-guiding surface 511 made of light-guiding material, and is re-emitted as the second disinfection light to disinfect the tableware under the guidance of the light-guiding surface 511. The disinfection lamp 30 switches between two states so that the tableware can be disinfected by disinfection lights of two different azimuth angles, thereby greatly reducing shadow areas and dead angles, irradiating the tableware more comprehensively, and achieving a more complete disinfection effect.

[0040] It should be noted that the disinfecting light 30 is a device that can emit disinfecting light, and the disinfecting light refers to electromagnetic waves that can kill, inhibit, and other microorganisms such as viruses and bacteria. In this embodiment, the disinfecting light is ultraviolet light, and accordingly, the disinfecting light 30 is a UV (Ultraviolet) lamp. In some other embodiments, the disinfecting light can also be infrared light, microwave, etc.

[0041] Furthermore, the focal length of the disinfecting lamp 30 is adjustable, and the switching of the disinfecting lamp 30 between the focusing state and the diverging state is achieved by adjusting the focal length.

[0042] The state of the first disinfecting light emitted by the disinfecting lamp 30 is directly related to its focal length, and can diverge or converge with the change of the focal length until the disinfecting lamp 30 switches to a divergent state or a focused state.

[0043] It is understandable that in some other embodiments, the state switching of the disinfecting lamp 30 can also be completed by switching the light source of the disinfecting lamp 30, etc., as long as the convergence and dispersion state of the first disinfecting light emitted by the disinfecting lamp 30 can be changed to meet the requirements, and no specific limitation is made here.

[0044] Furthermore, the disinfecting lamp 30 includes a light source and a focusing lens, and the distance between the focusing lens and the light source can be controlled and adjusted.

[0045] The light source is the component in the disinfecting lamp 30 that directly generates the first disinfecting light. The first disinfecting light generated by the light source is emitted after the focal length is adjusted to a suitable value according to the needs by the focusing lens.

[0046] The focal length of the disinfecting lamp 30 can be changed by adjusting the distance between the focusing lens and the light source, so that the disinfecting lamp 30 has a divergent state and a focused state, and switches between the two convergent and divergent states.

[0047] In this specific embodiment, the focusing lens is a convex lens. When the distance increases, the light converges; when the distance decreases, the light diverges. It is understandable that in some other embodiments, the focusing lens can also be other optical lenses or optical lens groups, or the focal length of the disinfecting lamp 30 can be adjusted directly by switching the optical lens without changing the distance between the optical lens and the light source, etc., which are not specifically limited here.

[0048] In some embodiments, the spray arm mechanism 50 can rotate relative to the body 10. The spray arm mechanism 50 includes a spray arm body 51 and a rotating shaft 53. The spray arm body 51 includes a light guiding surface 511. The spray arm has a side of the spray arm body 51 connected to the rotating shaft 53 and can rotate relative to the body 10 through the rotating shaft 53.

[0049] The spray arm body 51 can rotate continuously to achieve the purpose of sufficient spray cleaning when the dishwasher 100 performs a cleaning operation to wash the dishes. The spray arm body 51 can be centrally symmetrical about the axis of the rotating shaft 53 and rotate about the axis of the rotating shaft 53, which is provided on the machine body 10. It can be understood that the spray arm body 51 has a conventional water spray hole 513 for spraying.

[0050] When the spray arm body 51 is performing a rotating action such as spraying, its light-guiding surface 511 also rotates continuously. The second disinfection light emitted by the light-guiding surface 511 also continuously changes its angle and position relative to the tableware in the cleaning chamber Q during this rotation process, which greatly enriches the irradiation angle and irradiation range of the second disinfection light, fully irradiates the tableware, and avoids the problem of incomplete disinfection caused by blind spots and shadows in the irradiation.

[0051] Furthermore, the spray arm body 51 includes at least two sub-arms 515 , one end of each sub-arm 515 is connected to each other and to the rotating shaft 53 , and the other end of each sub-arm 515 extends away from the rotating shaft 53 .

[0052] All the sub-arms 515 are connected to each other to form the spray arm body 51, and are connected to the rotating shaft 53 at one side of the connection. The shape of the sub-arm 515 can be, but is not limited to, a straight arm shape, a curved arm shape, etc. The number of sub-arms 515 can be set according to the spraying needs, and is preferably arranged evenly spaced.

[0053] It can be understood that each sub-arm 515 should have a light-guiding surface 511 and the light-guiding surfaces 511 of each sub-arm 515 should be connected to each other at one point. In this way, when the disinfection lamp 30 is in a focusing state, all the sub-arms 515 can be lit by irradiating the concentrated first disinfection light to the connecting point of the light-guiding surfaces 511 of all the sub-arms 515.

[0054] In some other embodiments, the spray arm body 51 may also be in a disc shape, and the light guiding surface 511 is formed on one side of the entire spray arm body 51 , which is not specifically limited here.

[0055] Furthermore, when the disinfection lamp 30 is in a focusing state, the first disinfection light emitted by the disinfection lamp 30 is gathered and irradiated on the rotation center of the spray arm body 51 .

[0056] It is not difficult to understand that the rotation center of the spray arm body 51 where the first disinfecting light converges and irradiates is the light guide surface 511. The rotation center mainly changes in angle without obvious displacement, so the first disinfecting light converges and irradiates here to stably light up the light guide surface 511, and the light guide surface 511 can also continuously convert the first disinfecting light into the second disinfecting light and emit it. Specifically, the rotation center of the spray arm body 51 is the area where the axis of the shaft 53 passes through, and all the sub-arms 515 are connected to each other.

[0057] In some embodiments, the disinfection lamp 30 is arranged opposite to the spray arm mechanism 50 .

[0058] The disinfection lamp 30 is directly opposite to the spray arm mechanism 50, and the first disinfection light emitted by the disinfection lamp 30 can better irradiate the surface of the spray arm mechanism 50, especially irradiate the light guide surface 511 in a focused state. On the other hand, the disinfection lamp 30 and the spray arm mechanism 50 are arranged opposite to each other, which means that the tableware in the cleaning cavity Q is located between the two. The disinfection lamp 30 and the spray arm mechanism 50 can respectively produce an irradiation effect on the tableware in the cleaning cavity Q of the machine body 10 on opposite sides, which helps to eliminate the shadows and dead angles of the irradiation.

[0059] Commonly, the spray arm mechanism 50 is arranged at the bottom of the cleaning chamber Q, and the disinfection lamp 30 is correspondingly arranged at the top of the cleaning chamber Q. Based on this situation, when the disinfection lamp 30 is in a divergent state, the first disinfection light emitted by it radiates from top to bottom into the cleaning chamber, and when the disinfection lamp 30 is in a focused state, the first disinfection light emitted by it converges from top to bottom onto the light-guiding surface 511 of the spray arm mechanism 50, and diffuses around with the irradiation point as the center and covers the entire light-guiding surface 511, and at the same time can be used as the second disinfection light from different positions of the light-guiding surface 511 to irradiate into the cleaning chamber from bottom to top.

[0060] It can be understood that the rotating shaft 53 is located on the side of the spray arm body 51 facing away from the disinfection lamp 30 to avoid affecting the first disinfection light irradiating the spray arm body 51.

[0061] Furthermore, the spray arm body 51 includes an outer shell, and at least the portion of the outer shell facing the disinfection lamp 30 is a light-guiding surface 511 of the spray arm mechanism 50 .

[0062] The portion facing the disinfection lamp 30 is also the portion facing the tableware, and at least this portion is the light-guiding surface 511, which can enhance the reception of the first disinfection light and enhance the effect of emitting the second disinfection light to the tableware. For example, when the spray arm mechanism 50 is located at the bottom of the cleaning chamber Q and the disinfection lamp 30 is located at the top of the cleaning chamber Q, at least the upper half of the housing is the light-guiding surface 511.

[0063] In this specific embodiment, the housing is the light-guiding surface 511. In other words, the entire housing is made of a light-guiding material, which can fully receive the first disinfection light and emit the second disinfection light to the cleaning chamber in a wider range. At the same time, no special distinction is made, which is more convenient for production. In addition, a water spray hole 513 is also provided on the housing, and the water for spraying flows in the housing and sprays outward through the water spray hole 513.

[0064] In some embodiments, the light guide material is PMMA (Polymethyl Methacrylate, also known as organic glass), PC (Polycarbonate, polycarbonate) or PS (Polystyrene, polystyrene) material.

[0065] PMMA, PC, and PS materials have high transparency and suitable materials are selected according to the disinfecting light. Among them, PMMA material is particularly preferred. PMMA has the advantages of light weight, high mechanical strength, and high light transmittance. It can help reduce the weight of the product, adapt to the strength requirements of the spray arm mechanism 50, and can conduct the first disinfecting light well, especially it has the advantage of high stability under ultraviolet irradiation, and modified polymethyl methacrylate can be specifically selected. It can be understood that the light-guiding material can also use other high-transparency materials, or select a suitable light-guiding material according to the properties of the first disinfecting light, which is not specifically limited here.

[0066] In the dishwasher 100, the focal length of the disinfection lamp 30 can be adjusted, and according to the different focal lengths, it has a divergent state of emitting the first disinfection light and a focused state of gathering the first disinfection light. The shell of the spray arm mechanism 50 is made of a light-guiding material, and the first disinfection light emitted by the disinfection lamp 30 can propagate along the shell and cover the shell, and then be emitted from various parts of the shell as the second emission light. When the dishwasher 100 is in use, the disinfection lamp 30 can be selected to be cut into a focused state when the spray arm mechanism 50 rotates. The second disinfection light emitted by the light-guiding surface 511 continuously changes its angle and orientation during the continuous rotation process to fully irradiate the tableware from bottom to top. When the spray arm mechanism 50 does not rotate, the disinfection lamp 30 can be cut into a divergent state, and the divergent first disinfection light can be directly used to irradiate the tableware from another angle. And switch between the two states to achieve the purpose of irradiating the tableware from multiple angles and multiple ranges to disinfect the tableware.

[0067] See also Figure 4 On the other hand, the present invention also provides a disinfection control method for the above-mentioned dishwasher 100, the disinfection control method comprising the following steps:

[0068] S10, when performing the washing operation, the disinfection lamp 30 is in a focused state;

[0069] S30, when performing the drying operation, the disinfection lamp 30 is in a diverging state.

[0070] It can be understood that the washing operation is a stage of cleaning the tableware, which may specifically include pre-washing, main washing and rinsing. The drying operation is to drain the water and remove the water on the surface of the tableware in an active or passive manner.

[0071] In two different stages, different irradiation schemes of the disinfection lamp 30 are respectively adopted, so that the tableware can be irradiated and disinfected by disinfection lights of two different azimuth angles, thereby greatly reducing the shadow area and dead angles, irradiating the tableware more comprehensively, and achieving a more complete disinfection effect. Especially for the situation in which the spray arm mechanism 50 is constantly rotating to perform the spraying operation during the washing operation, at this time, the disinfection lamp 30 is selected to be cut into the focusing state, and the second disinfection light emitted by the light-guiding surface 511 of the spray arm mechanism 50 continuously changes its angle and position relative to the tableware in the washing chamber Q due to the rotation of the spray arm mechanism 50, which greatly enriches the irradiation angle and irradiation range of the second disinfection light, fully irradiates the tableware, and avoids the problem of incomplete disinfection caused by dead angles and shadows in the irradiation. During the drying operation, the spray arm mechanism 50 no longer rotates, and at this time, the disinfection lamp 30 is selected to be cut into the divergent state, and the divergent first disinfection light is directly used to irradiate the tableware from another angle in a large range.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A dishwasher (100), characterized in that: include: The machine body (10) has a cleaning chamber (Q); a disinfection lamp (30), arranged on the machine body (10), and used for emitting a first disinfection light beam into the cleaning chamber (Q); and A spray arm mechanism (50) is arranged in the cleaning chamber (Q) and comprises a light-guiding surface (511) made of a light-guiding material; Wherein, the disinfecting lamp (30) is configured to have a divergent state and a focused state; when the disinfecting lamp (30) is in the divergent state, the first disinfecting light emitted by the disinfecting lamp (30) is divergently irradiated into the cleaning chamber (Q); When the disinfecting lamp (30) is in a focusing state, the first disinfecting light emitted by the disinfecting lamp (30) is collected and irradiated on the light-guiding surface (511) and propagates along the light-guiding surface (511), until the light-guiding surface (511) as a whole forms a disinfecting light source, and the disinfecting light source emits a second disinfecting light outward.

2. The dishwasher (100) according to claim 1, characterized in that: The focal length of the disinfecting lamp (30) is adjustable, and the switching of the disinfecting lamp (30) between the focusing state and the diverging state is achieved by adjusting the focal length.

3. The dishwasher (100) according to claim 2, characterized in that: The disinfecting lamp (30) comprises a light source and a focusing lens, and the distance between the focusing lens and the light source can be controlled and adjusted.

4. The dishwasher (100) according to any one of claims 1 to 3, characterized in that: The spray arm mechanism (50) can rotate relative to the machine body (10), and the spray arm mechanism (50) comprises a spray arm body (51) and a rotating shaft (53), the spray arm body (51) comprises the light guiding surface (511), and one side of the spray arm body (51) is connected to the rotating shaft (53) and can rotate relative to the machine body (10) through the rotating shaft (53).

5. The dishwasher (100) according to claim 4, characterized in that: The disinfecting lamp (30) is arranged opposite to the spray arm mechanism (50).

6. The dishwasher (100) according to claim 5, characterized in that: The spray arm body (51) comprises a shell, and at least the portion of the shell facing the disinfection lamp (30) is the light-guiding surface (511) of the spray arm mechanism (50).

7. The dishwasher (100) according to claim 4, characterized in that: The spray arm body (51) comprises at least two sub-arms (515), one end of each of the sub-arms (515) is connected to each other and to the rotating shaft (53), and the other end extends away from the rotating shaft (53).

8. The dishwasher (100) according to claim 4, characterized in that: When the disinfecting lamp (30) is in a focusing state, the first disinfecting light emitted by the disinfecting lamp (30) converges and irradiates the rotation center of the spray arm body (51).

9. The dishwasher (100) according to claim 1, characterized in that: The light-guiding material is PMMA, PC or PS.

10. A method for controlling the disinfection of a dishwasher (100), characterized in that: The dishwasher (100) is the dishwasher (100) according to any one of claims 1 to 9, and the disinfection control method comprises the following steps: When performing a washing operation, the disinfection lamp (30) is placed in the focusing state; When performing the drying operation, the disinfection lamp (30) is placed in the diverging state.

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