A dishwasher having a steam washing function

Abstract

The utility model provides a kind of steam washing function's dish washer, belong to dish washer technical field, comprising: inner bag;Steam injection device includes mounting bracket and steam nozzle, mounting bracket is fixed in inner bag top, and steam nozzle is located in cavity;Steam nozzle inside is equipped with several injection cavities and steam guide chamber, injection cavity is arranged with steam guide chamber interval, steam is transported to adjacent injection cavity in each steam guide chamber, and each steam guide chamber inlet is converged to steam nozzle center, and each steam guide chamber outlet is opened in edge, and it is communicated with corresponding injection cavity, and steam nozzle is equipped with steam outlet hole towards cavity one side, and steam outlet hole is communicated with injection cavity;The beneficial effects of the utility model are that: steam is transported by steam guide chamber from center to edge and shunts, and after being shunted, it is sprayed into cavity downward by multiple steam outlet holes, expands steam coverage, improves steam uniformity, reduces injection dead angle and inner bag top condensation, improves the heating, sterilization, grease softening and drying effect of tableware.

Description

Technical Field

[0001] This utility model belongs to the field of dishwasher technology and relates to a dishwasher with steam washing function. Background Technology

[0002] Traditional dishwashers primarily rely on high-temperature, high-pressure water jets to mechanically clean dishes. However, stubborn grease and bacteria on the surface of dishes cannot be thoroughly removed by water rinsing alone. In recent years, steam washing technology has been increasingly applied to the dishwasher industry. Utilizing the thermal energy and penetrability of high-temperature steam, it can effectively soften grease, kill microorganisms, and accelerate drying, becoming an important technological direction for improving dishwasher performance.

[0003] Existing steam dishwashers typically place the steam jet device on the side wall of the inner drum. Steam generated by the steam generator is sprayed into the inner drum through the steam jet device to achieve steam washing of the dishes. This side-wall spraying method causes the steam to spread laterally in a jet shape, forming localized high-temperature and low-temperature areas inside the drum. Dishes that are far from the nozzle or located in the spray dead zone do not have sufficient contact with the steam, resulting in poor uniformity of steam coverage.

[0004] Furthermore, existing steam jet devices typically lack internal structures for effectively buffering and distributing steam within the nozzle. After entering the nozzle through the steam channel, steam tends to flow directly towards the steam outlet near the inlet, resulting in uneven steam flow between different outlets. Areas closer to the steam channel inlet exhibit higher steam velocities, while areas farther from the inlet have lower velocities. This can even lead to insufficient steam output from some outlets, resulting in uneven steam distribution and difficulty in forming a uniform, continuous steam coverage area. Consequently, this negatively impacts the uniformity of heating on tableware, the softening effect of grease, and the effectiveness of high-temperature sterilization. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a dishwasher with a steam washing function.

[0006] The objective of this utility model can be achieved through the following technical solution: a dishwasher with a steam washing function, comprising: Inner liner, the inner liner having a cavity; At least one steam injection device, the steam injection device including a mounting bracket and a steam nozzle, the mounting bracket being fixedly installed on the top of the inner liner, and the steam nozzle being located in the cavity and fixedly connected to the mounting bracket; The steam nozzle has several injection chambers and several steam guide chambers. The injection chambers and steam guide chambers are spaced apart, and the steam in each steam guide chamber is delivered to the adjacent injection chamber. The inlets of each steam guide chamber converge at the center of the steam nozzle, and the outlets of each steam guide chamber are located near the edge of the steam nozzle. The steam guide chambers are arranged in a circular array with the center of the steam nozzle as the center. The outlet of each steam guide chamber is connected to the corresponding injection chamber. The side of the steam nozzle facing the cavity has several steam outlet holes, which are connected to the injection chambers.

[0007] Preferably, the steam nozzle includes a panel and a steam guide section. The panel faces the bottom of the cavity, and each of the steam outlets is opened on the panel. The panel and the mounting bracket enclose the injection cavity, and the steam guide section is located inside the steam guide section. The panel is provided with a guide groove, and the steam in the steam guide section enters the injection cavity through the guide groove.

[0008] Preferably, there are multiple steam guide sections, and each steam guide section is radially distributed around the center of the steam nozzle; wherein, the injection chamber is formed between any two adjacent steam guide sections.

[0009] Preferably, the steam nozzle further includes a connecting pipe located at its center, the connecting pipe being integrally connected to each of the steam guide sections, and the inlet of the steam guide chamber of each of the steam guide sections communicating with the outlet of the connecting pipe.

[0010] Preferably, the mounting bracket includes an upper fixing seat and a lower fixing seat. The upper fixing seat is installed on the side of the inner liner facing away from the cavity, and the lower fixing seat is installed on the side of the inner liner facing the cavity. The upper fixing seat and the lower fixing seat are fixedly connected by screws, and the steam nozzle is connected to the lower fixing seat by a snap-fit.

[0011] Preferably, the top of the inner liner is provided with a clearance hole, the upper fixing seat is provided with a connector, the connector is provided with a steam passage, one end of the connector corresponding to the outlet of the steam passage and the inlet end of the connecting pipe passes through the clearance hole and connects with the other end, and the inlet of the steam guide chamber is connected to the outlet of the steam passage through the connecting pipe.

[0012] Preferably, the steam injection device further includes a sealing gasket disposed between the upper fixing seat and the top of the inner liner.

[0013] Preferably, one end of the connector corresponding to the steam channel outlet is inserted into the connecting pipe, and there is a gap between the connector and the connecting pipe, the gap being in communication with the injection chamber.

[0014] Preferably, it also includes a steam generator, the outlet of which is connected to one end of the connector corresponding to the inlet of the steam passage.

[0015] Preferably, the number of steam outlet holes is 50 to 150.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Steam is transported from the center to the edge through the steam guide cavity and then split. It is then sprayed downward into the cavity through multiple steam outlets, thereby expanding the steam coverage area, improving the uniformity of steam output, reducing dead zones in the spray and condensation at the top of the inner liner, which is beneficial to improving the heating, sterilization, oil softening and drying effects of tableware.

[0017] 2. The densely distributed steam outlets divide the steam into multiple fine streams, making the ejected steam closer to a fine mist rather than a concentrated jet. This can form a fog curtain with a sufficiently large coverage area, while maintaining a certain jet speed to drive the hot air inside the liner to form a downward sinking airflow.

[0018] 3. Multiple steam guide sections are radially distributed around the center of the steam nozzle, which quickly and evenly delivers steam from the center to all directions. An injection chamber is formed between two adjacent steam guide sections. Each injection chamber can obtain steam replenishment from the outlet of the adjacent steam guide chamber, so that the steam pressure in each injection chamber is balanced and the steam flow rate between steam outlets at different positions is uniform. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the interior of the inner liner of this utility model.

[0020] Figure 2 This is an external schematic diagram of the inner liner of this utility model.

[0021] Figure 3 This is a half-sectional schematic diagram of the steam injection device of this utility model.

[0022] Figure 4 This is an exploded view of the steam injection device of this utility model.

[0023] Figure 5 This is a schematic diagram of the flow path of steam entering the steam nozzle according to this utility model.

[0024] Figure 6 This is a schematic diagram showing the location of the steam generator of this utility model.

[0025] In the diagram, 100 is the inner liner; 110 is the cavity; 120 is the clearance hole; 200 is the steam nozzle; 210 is the panel; 211 is the injection chamber; 212 is the steam outlet; 220 is the steam guide; 221 is the steam guide chamber; 230 is the connecting pipe; 300 is the upper fixed seat; 310 is the joint; 311 is the steam passage; 400 is the lower fixed seat; 500 is the sealing gasket; and 600 is the steam generator. Detailed Implementation

[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0027] like Figures 1 to 5 As shown, a dishwasher with a steam washing function includes an inner tub 100 and at least one steam jet device; the inner tub 100 has a cavity 110 for accommodating tableware to be washed; the steam jet device includes a mounting bracket and a steam nozzle 200, the mounting bracket is fixedly mounted on the top of the inner tub 100, and the steam nozzle 200 is located inside the cavity 110 and fixedly connected to the mounting bracket.

[0028] The steam nozzle 200 has several injection chambers 211 and several steam guide chambers 221, which are spaced apart. Steam in each steam guide chamber 221 is delivered to the adjacent injection chamber 211. The inlets of each steam guide chamber 221 converge at the center of the steam nozzle 200, and the outlets of each steam guide chamber 221 are located near the edge of the steam nozzle 200. The steam guide chambers 221 are arranged in a circular array with the center of the steam nozzle 200 as the center, and the outlet of each steam guide chamber 221 is connected to the corresponding injection chamber 211. The side of the steam nozzle 200 facing the cavity 110 has several steam outlet holes 212, which are connected to the injection chambers 211.

[0029] In this embodiment, the steam injection device is installed on the top of the inner liner 100, so that the steam injection starting point is located above the cavity 110, solving the problem of uneven coverage caused by side wall injection. More importantly, the steam nozzle 200 is designed with multiple injection chambers 211 and multiple steam guide chambers 221. The injection chambers 211 and the steam guide chambers 221 are arranged at intervals. The inlets of each steam guide chamber 221 converge at the center of the steam nozzle 200, and the outlets of each steam guide chamber 221 are opened near the edge of the steam nozzle 200. The steam guide chambers 221 are arranged in a circular array with the center of the steam nozzle 200 as the center, so that the steam entering from the center can be quickly transferred along each steam guide chamber 221 to the edge area of ​​the steam nozzle 200, and then enter the adjacent injection chamber 211. The design of multiple injection chambers 211 and steam guide chambers 221 arranged at intervals can make the steam pressure in each injection chamber 211 more uniform. After the steam is transported from the center to the edge and split through the steam guide chamber 221, it is sprayed downward into the cavity 110 through multiple steam outlet holes 212, thereby expanding the steam coverage area, improving the uniformity of steam outlet, and reducing injection dead angles.

[0030] Simultaneously, by moving the injection point to the top of the inner liner 100, steam is evenly spread and sprayed downwards from above. When multiple steam outlets 212 simultaneously eject steam at high speed, the ejected steam drives the hot air inside the inner liner 100 to form a downward sinking airflow. The high-temperature steam continues to flow downwards, making it difficult for rising steam to accumulate on the top of the inner liner 100, thus reducing the problem of condensation and dripping. Through this structure, steam can fully cover the tableware in the form of a mist curtain, increasing the contact area for rapid heat exchange, improving the uniformity of heating, softening of oil stains, high-temperature sterilization, and drying effects, while reducing the risk of cross-contamination.

[0031] Based on the above implementation, the number of steam outlet holes 212 is between 50 and 150. The numerous densely distributed steam outlet holes 212 divide the steam into multiple fine streams, dispersing the steam outlet cross-section, resulting in steam that is closer to a fine mist rather than a concentrated jet. Within this range, the steam can form a sufficiently large mist curtain while maintaining a certain jet velocity to drive the hot air inside the inner liner 100 into a downward-flowing airflow.

[0032] Based on the above embodiments, the steam nozzle 200 includes a panel portion 210 and a steam guide portion 220. The panel portion 210 faces the bottom of the cavity 110, and each steam outlet 212 is opened on the panel portion 210. The panel portion 210 and the mounting bracket enclose a spray cavity 211, and the steam guide cavity 221 is located inside the steam guide portion 220. The panel portion 210 is provided with a guide groove, and the steam in the steam guide cavity 221 enters the spray cavity 211 through the guide groove.

[0033] In this embodiment, the panel portion 210 is a plate-shaped structure with steam outlet holes 212, forming the spray surface of the steam nozzle 200 facing the cavity 110. The space enclosed by the panel portion 210 and the mounting bracket provides space for steam distribution and buffering. A guide groove is provided on the panel portion 210, and a steam guide cavity 221 is disposed inside the steam guide portion 220. The steam in the steam guide cavity 221 enters the spray cavity 211 through the guide groove, diffuses in the spray cavity 211, and is then sprayed out from the various steam outlet holes 212 distributed on the panel portion 210. This structural design allows the steam to be first diverted and transmitted through the steam guide cavity 221, and then enters the spray cavity 211 through the guide groove for secondary distribution. This avoids the steam flowing directly to the steam outlet holes 212 near the air inlet, making the steam spray from each steam outlet hole 212 more uniform, which is beneficial for forming a uniformly distributed downward steam mist curtain.

[0034] Based on the above embodiments, there are multiple steam guide sections 220, and each steam guide section 220 is radially distributed around the center position of the steam nozzle 200; wherein, an injection chamber 211 is formed between any two adjacent steam guide sections 220.

[0035] In this embodiment, each steam guide section 220 has a steam guide cavity 221 inside. Multiple steam guide sections 220 can quickly and evenly deliver steam from the center to all directions of the steam nozzle 200, ensuring the uniformity of steam distribution in each injection cavity 211. An injection cavity 211 is formed between any two adjacent steam guide sections 220. Each injection cavity 211 receives steam replenishment from the outlet of the adjacent steam guide cavity 221, avoiding the problem of steam flowing directly towards the air inlet position. This ensures that the steam pressure in each injection cavity 211 is balanced, guaranteeing the uniformity of steam flow between steam outlets 212 at different positions.

[0036] Based on the above embodiments, the steam nozzle 200 also includes a connecting pipe section 230 located at its center. The connecting pipe section 230 is integrally connected to each steam guide section 220, and the inlet of the steam guide chamber 221 of each steam guide section 220 is connected to the outlet of the connecting pipe section 230.

[0037] In this embodiment, the connecting pipe section 230 is located at the center of the steam nozzle 200, serving as the inlet channel for steam to enter the steam nozzle 200. The connecting pipe section 230 is integrally connected to each steam guide section 220, forming a steam distribution center. Externally supplied steam first enters the connecting pipe section 230, and then is simultaneously distributed from the outlet of the connecting pipe section 230 into the inlet of the steam guide chamber 221 of each steam guide section 220, and then transported to the edge along each steam guide chamber 221. The arrangement of the connecting pipe section 230 allows steam to enter all steam guide chambers 221 simultaneously, achieving synchronous and uniform steam distribution, ensuring that each steam guide chamber 221 receives a similar steam flow rate, thereby further improving the uniformity of steam distribution within the injection chamber 211.

[0038] like Figures 1 to 5 As shown, based on the above embodiment, the mounting bracket includes an upper fixing seat 300 and a lower fixing seat 400. The upper fixing seat 300 is installed on the side of the inner liner 100 facing away from the cavity 110, and the lower fixing seat 400 is installed on the side of the inner liner 100 facing the cavity 110. The upper fixing seat 300 and the lower fixing seat 400 are fixedly connected by screws, and the steam nozzle 200 is connected to the lower fixing seat 400 by a snap-fit.

[0039] Specifically, the upper fixing seat 300 and the lower fixing seat 400 are located on the outer and inner sides of the top of the inner liner 100, respectively. They are clamped to the top of the inner liner 100 by screws to fix the steam injection device to the top of the inner liner 100. The steam nozzle 200 is connected to the lower fixing seat 400 by a snap-fit, which facilitates assembly, disassembly and maintenance.

[0040] Based on the above-described embodiments, the top of the inner liner 100 is provided with a clearance hole 120, the upper fixing seat 300 is provided with a connector 310, and a steam passage 311 is provided inside the connector 310. One end of the connector 310 corresponding to the outlet of the steam passage 311 and the inlet end of the connecting pipe 230 passes through the clearance hole 120 and connects with the other end. The inlet of the steam guide chamber 221 is connected to the outlet of the steam passage 311 through the connecting pipe 230.

[0041] In the actual structure, the upper fixed seat 300 is similar to a flange structure with a pipe. The joint 310 is the tubular part on the upper fixed seat 300. The steam passage 311 passes through the joint 310, forming a passage for steam to enter the steam nozzle 200 from the outside of the inner liner 100. The clearance hole 120 provides space for the inlet end of the joint 310 or the connecting pipe 230 to pass through the top wall of the inner liner 100. After the steam enters the connecting pipe 230 through the steam passage 311, it is simultaneously distributed from the outlet of the connecting pipe 230 into the inlet of each steam guide chamber 221, realizing a complete transmission path of steam from the outside to the inside nozzle.

[0042] Based on the above embodiments, the steam injection device further includes a sealing gasket 500, which is disposed between the upper fixed seat 300 and the top of the inner liner 100. The sealing gasket 500 is pressed between the upper fixed seat 300 and the outer wall surface of the top of the inner liner 100, filling the gap between the contact surfaces of the two.

[0043] Based on the above embodiment, one end of the connector 310 corresponding to the outlet of the steam channel 311 is inserted into the connecting pipe 230, and there is a gap between the connector 310 and the connecting pipe 230, which communicates with the injection chamber 211.

[0044] In this embodiment, a portion of the steam ejected from the steam channel 311 is distributed to each steam guide chamber 221 via the connecting pipe 230, while another portion of the steam directly enters the central region of the injection chamber 211 through the gap.

[0045] like Figures 2 to 6 As shown, based on the above embodiment, a steam generator 600 is also included. The outlet of the steam generator 600 is connected to one end of the connector 310 corresponding to the inlet of the steam channel 311. The steam generator 600 is the steam source, and its outlet is connected to one end of the connector 310 corresponding to the inlet of the steam channel 311 through a steam delivery pipe. The steam is delivered to the connecting pipe 230 of the steam nozzle 200 through the steam channel 311 in the connector 310.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A dishwasher with a steam washing function, characterized in that, include: Inner liner (100), the inner liner (100) having a cavity (110); At least one steam injection device, the steam injection device including a mounting bracket and a steam nozzle (200), the mounting bracket being fixedly installed on the top of the inner liner (100), and the steam nozzle (200) being located inside the cavity (110) and fixedly connected to the mounting bracket; The steam nozzle (200) has several injection chambers (211) and several steam guide chambers (221) inside. The injection chambers (211) and the steam guide chambers (221) are spaced apart, and the steam in each steam guide chamber (221) is correspondingly transported to the adjacent injection chamber (211). The inlets of each steam guide chamber (221) converge at the center of the steam nozzle (200), and the outlets of each steam guide chamber (221) are opened near the edge of the steam nozzle (200). Each steam guide chamber (221) is arranged in a circular array with the center of the steam nozzle (200) as the center. The outlet of each steam guide chamber (221) is connected to the corresponding injection chamber (211). The side of the steam nozzle (200) facing the cavity (110) is provided with several steam outlet holes (212), and the steam outlet holes (212) are connected to the injection chambers (211).

2. A dishwasher with steam washing function as described in claim 1, characterized in that, The steam nozzle (200) includes a panel (210) and a steam guide (220). The panel (210) faces the bottom of the cavity (110), and each of the steam outlets (212) is opened on the panel (210). The panel (210) and the mounting bracket enclose the injection chamber (211), and the steam guide (221) is located inside the steam guide (220). The panel (210) is provided with a guide groove, and the steam in the steam guide (221) enters the injection chamber (211) through the guide groove.

3. A dishwasher with a steam washing function as described in claim 2, characterized in that, There are multiple steam guide sections (220), and each steam guide section (220) is radially distributed around the center position of the steam nozzle (200); wherein, the injection chamber (211) is formed between any two adjacent steam guide sections (220).

4. A dishwasher with a steam washing function as described in claim 3, characterized in that, The steam nozzle (200) also includes a connecting pipe (230) located at its center. The connecting pipe (230) is integrally connected to each of the steam guide sections (220). The inlet of the steam guide chamber (221) of each of the steam guide sections (220) is connected to the outlet of the connecting pipe (230).

5. A dishwasher with a steam washing function as described in claim 4, characterized in that, The mounting bracket includes an upper fixing seat (300) and a lower fixing seat (400). The upper fixing seat (300) is installed on the top of the inner liner (100) facing away from the cavity (110), and the lower fixing seat (400) is installed on the top of the inner liner (100) facing the cavity (110). The upper fixing seat (300) and the lower fixing seat (400) are fixedly connected by screws, and the steam nozzle (200) is connected to the lower fixing seat (400) by a snap-fit.

6. A dishwasher with a steam washing function as described in claim 5, characterized in that, The inner liner (100) is provided with a clearance hole (120) at the top, and the upper fixing seat (300) is provided with a connector (310). A steam channel (311) is provided inside the connector (310). One end of the connector (310) corresponding to the outlet of the steam channel (311) and the other end of the connecting pipe (230) pass through the clearance hole (120) and connect with the other end. The inlet of the steam guide chamber (221) is connected to the outlet of the steam channel (311) through the connecting pipe (230).

7. A dishwasher with a steam washing function as described in claim 6, characterized in that, The steam injection device further includes a sealing gasket (500) disposed between the upper fixing seat (300) and the top of the inner liner (100).

8. A dishwasher with a steam washing function as described in claim 6, characterized in that, The connector (310) is inserted into the connecting pipe (230) at one end corresponding to the outlet of the steam channel (311). There is a gap between the connector (310) and the connecting pipe (230), and the gap communicates with the injection chamber (211).

9. A dishwasher with a steam washing function as described in claim 6, characterized in that, It also includes a steam generator (600), the outlet of which is connected to one end of the connector (310) corresponding to the inlet of the steam passage (311).

10. A dishwasher with a steam washing function as described in claim 1, characterized in that, The number of steam outlet holes (212) is between 50 and 150.

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