Waterproof structure of micro switch of frozen food manufacturing equipment

Abstract

This utility model discloses a waterproof structure for a microswitch in a frozen food manufacturing equipment, comprising: a shell assembly extending vertically; a cantilever portion extending from one side of the top of the shell assembly; an evaporator and a stirring mechanism extending vertically downwards within the cantilever portion; and a material hopper fitted over the evaporator and stirring mechanism; a compressor and a throttling element inside the shell assembly; refrigeration pipes between the compressor and the evaporator, and between the throttling element and the evaporator; a pipe-penetrating area for the two refrigeration pipes to pass through inside the cantilever portion; a microswitch located on one side of the refrigeration pipes within the cantilever portion; and a waterproof structure is provided around the microswitch to isolate it from the refrigeration pipes. The microswitch is isolated from the refrigeration pipes by the waterproof structure, preventing water droplets forming on the pipe walls of the refrigeration pipes passing through the pipe-penetrating area from penetrating the microswitch, thus preventing water droplets from contacting the microswitch and avoiding problems such as moisture damage and poor electrical contact.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a waterproof microswitch structure for frozen food manufacturing equipment. Background Technology

[0002] As a core component of cold beverage equipment, slush machines are widely used in dessert shops, fast food chains, coffee shops, and home consumption scenarios. Vertical slush machines have the advantage of being small in size. The main body of the slush machine is a vertically oriented column, with a cantilever extending from one side of the top. The cantilever houses an evaporator for cooling raw materials, a stirring mechanism that works in conjunction with the evaporator, and a material container fitted over the evaporator and stirring mechanism. When cleaning or maintenance is required, the material container must be removed and reinstalled. To ensure electrical safety, a microswitch is typically installed between the material container and the main body of the slush machine. The stirring mechanism is activated only when the material container is properly installed and triggered.

[0003] The micro switch is usually located inside the cantilever section. The micro switch has a drive component that protrudes from the outside of the cantilever section and contacts the material tank. The inside of the cantilever section has an input pipe that connects the capillary tube to the input end of the evaporator and a return pipe that connects the output end of the evaporator to the compressor. Both the input pipe and the return pipe pass through one side of the micro switch, and the pipe wall temperature of the input pipe and the return pipe is lower than the room temperature, which causes a large number of water droplets to form on the pipe wall. These water droplets cause the micro switch to become damp and even have poor electrical contact.

[0004] In addition, the micro switch is usually located on the side of the outer peripheral wall of the material tank. The triggering part of the micro switch is pressed against the outer peripheral wall of the material tank to switch to the normally closed state. When the material tank is removed from the main body, it is still easy to touch the triggering part of the micro switch when it is pulled downwards, which will cause the stirring mechanism to operate unexpectedly. This is not only dangerous, but also dirtys the surrounding environment. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a waterproof structure for the microswitch in frozen food manufacturing equipment to prevent water droplets from contacting the microswitch, thereby avoiding the problems of moisture and poor contact of the microswitch.

[0006] A waterproof microswitch structure for a frozen food manufacturing equipment according to an embodiment of the present invention includes: a shell assembly extending vertically; a cantilever portion extending from one side of the top of the shell assembly; an evaporator extending vertically downward and a stirring mechanism cooperating with the evaporator in the cantilever portion; a material tank sleeved on the outside of the evaporator and the stirring mechanism in the cantilever portion; a compressor and a throttling element inside the shell assembly; refrigeration pipes between the compressor and the evaporator, and between the throttling element and the evaporator; a pipe-through area inside the cantilever portion for the passage of two sections of the refrigeration pipes; a microswitch located on one side of the refrigeration pipe in the cantilever portion; a waterproof structure isolated from the refrigeration pipe surrounding the microswitch; and the microswitch being triggered by the material tank to control the on / off power supply of the stirring mechanism.

[0007] The micro-switch waterproof structure of the frozen food manufacturing equipment according to the embodiments of this utility model has at least the following beneficial effects:

[0008] The micro switch is isolated from the refrigeration piping by a waterproof structure. Water droplets formed on the pipe walls of the refrigeration piping passing through the piping area will not penetrate the micro switch, preventing water droplets from contacting the micro switch and avoiding problems such as moisture damage and poor electrical contact.

[0009] In some embodiments of the present invention, the waterproof structure includes a surrounding plate around the periphery of the micro switch, the surrounding plate having a side opening facing the interior of the housing assembly, and the power terminals of the micro switch facing the side opening of the surrounding plate.

[0010] In some embodiments of this utility model, the overhang includes a side plate extending horizontally along the top of the side wall of the outer casing assembly near the evaporator. The upper part of the outer casing assembly is provided with a side shell covering the side plate. The surrounding plate is formed on the upper surface of the side plate, and the side plate forms the pipe penetration area on the outside of the surrounding plate.

[0011] In some embodiments of this utility model, the middle part of the side extension plate is provided with a mounting through hole for the evaporator to pass through downwards, and a limiting guide groove is provided between the end of the side extension plate near the outer shell assembly and the mounting through hole, which is recessed along the upper surface of the side extension plate, and the refrigeration pipeline is arranged along the extension direction of the limiting guide groove.

[0012] In some embodiments of this utility model, the enclosure has an upward-facing top opening, and the side extension plate is provided with a mounting groove located inside the enclosure to accommodate the micro switch. The mounting groove has an upward-facing mounting opening, and the edge of the mounting opening is provided with a plurality of elastic hooks that are spaced apart to engage and fix the micro switch.

[0013] In some embodiments of this utility model, the mounting groove is elongated, one end of the bottom wall of the mounting groove is provided with a through opening, the other end of the bottom wall of the mounting groove is provided with a positioning protrusion, and the bottom wall of the micro switch is provided with a positioning groove that matches the positioning protrusion.

[0014] In some embodiments of this utility model, the mounting groove is provided with a plurality of elastic hooks at intervals on both sides along its length direction. Each elastic hook includes an elastic arm extending vertically upward and a hook portion disposed at the upper end of the elastic arm. The hook portion has a guide slope for the micro switch to be inserted downward into the mounting groove.

[0015] In some embodiments of this utility model, the upper surface of the side extension plate is provided with an upwardly extending support column on the side near the outer shell assembly, and the support column abuts against the inner top wall of the side extension shell.

[0016] In some embodiments of this utility model, the material bucket has an upward-opening cavity, and the material bucket can be fitted onto the outside of the evaporator and stirring mechanism from bottom to top and detached from the evaporator and stirring mechanism from top to bottom. The micro switch is movably provided with a driving component extending below the cantilever. When the material bucket is installed in the cantilever, the upper end of the material bucket can keep pushing the driving component upward to trigger the micro switch.

[0017] In some embodiments of this utility model, the material barrel is cylindrical, the upper end of the material barrel is an annular abutment plane opposite to the driving component, the lower end of the overhang is provided with an annular mounting member that can extend downward into the material barrel, the evaporator passes downward through the middle channel of the annular mounting member, the upper edge of the inner peripheral wall of the material barrel is formed with at least two rotating fasteners, and the outer peripheral wall of the annular mounting member is provided with rotating grooves that correspond one-to-one with the rotating fasteners.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the micro-switch waterproof structure of the frozen food manufacturing equipment of this utility model, showing the separation of the material tank and the evaporator.

[0021] Figure 2 This is a cross-sectional schematic diagram of an embodiment of a waterproof microswitch structure for frozen food manufacturing equipment;

[0022] Figure 3 yes Figure 2 A schematic diagram of the structure after removing a portion of the outer casing assembly and the side extension shell in the embodiment;

[0023] Figure 4 This is a partial structural diagram showing the separation of the micro switch from the mounting slot.

[0024] Figure label:

[0025] 100 housing assembly; 200 overhang; 201 side extension plate; 202 side extension shell; 203 mounting through hole; 204 limiting guide groove; 205 mounting groove; 206 elastic hook; 207 through port; 208 positioning protrusion; 210 micro switch; 211 drive component; 220 waterproof structure; 230 support column; 240 annular mounting part; 241 rotating slot; 300 evaporator; 400 stirring mechanism; 500 material bucket; 510 rotating fastener; 600 compressor; 700 throttling element; 800 refrigeration piping. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] See Figures 1 to 3 This utility model discloses a waterproof micro-switch structure for a frozen food manufacturing equipment, comprising: a housing assembly 100 extending vertically; a cantilever portion 200 extending from one side of the top of the housing assembly 100; an evaporator 300 extending vertically downward and a stirring mechanism 400 cooperating with the evaporator 300; a material hopper 500 fitted around the evaporator 300 and the stirring mechanism 400; and a compressor 600 and a throttling element 700 disposed inside the housing assembly 100. A refrigeration pipe 800 is provided between the compressor 600 and the evaporator 300, and between the throttling element 700 and the evaporator 300. The interior of the overhang 200 is provided with a pipe-passing area for the two sections of the refrigeration pipe 800 to pass through. A micro switch 210 is provided inside the overhang 200 on one side of the refrigeration pipe 800. The periphery of the micro switch 210 is provided with a waterproof structure 220 that is isolated from the refrigeration pipe 800. The micro switch 210 can be triggered by the material tank 500 to control the power supply of the stirring mechanism 400.

[0031] The micro switch 210 is isolated from the cooling pipe 800 by the waterproof structure 220. Water droplets formed on the pipe wall of the cooling pipe 800 passing through the pipe area will not penetrate the micro switch 210, preventing water droplets from contacting the micro switch 210 and avoiding problems such as moisture and poor electrical contact of the micro switch 210.

[0032] See Figure 3 and Figure 4In some embodiments of this invention, the waterproof structure 220 includes a surrounding plate around the micro switch 210, the surrounding plate having a side opening facing the interior of the housing assembly 100, and the electrical terminals of the micro switch 210 facing the side opening of the surrounding plate. It is conceivable that air condenses into water droplets on the outer wall of the cooling pipe 800, and these droplets are blocked by the surrounding plate after dripping. The water can be diverted to other locations (such as a drip tray) by the guide channel, preventing water from contacting the micro switch 210. Furthermore, since the micro switch 210 requires electrical power, the electrical control device is typically located inside the housing assembly 100, and the side opening of the surrounding plate allows wires to enter the surrounding plate to connect to the micro switch 210.

[0033] See Figure 2 and Figure 3 In some embodiments of this utility model, the overhang 200 includes a side plate 201 extending horizontally along the top of the side wall of the outer casing assembly 100 near the evaporator 300. The upper part of the outer casing assembly 100 is provided with a side shell 202 covering the side plate 201. A surrounding plate is formed on the upper surface of the side plate 201, and the side plate 201 forms the pipe-penetrating area outside the surrounding plate. It is understood that the side plate 201 and the side shell 202 together enclose components such as the micro switch 210, the refrigeration pipe 800, and the drive portion of the stirring mechanism 400.

[0034] See Figure 3 and Figure 4 In some embodiments of this utility model, the side extension plate 201 has a mounting through hole 203 in the middle for the evaporator 300 to pass through downwards. A limiting guide groove 204 is provided between the end of the side extension plate 201 near the outer shell assembly 100 and the mounting through hole 203, recessed along the upper surface of the side extension plate 201. The refrigeration pipe 800 is arranged along the extending direction of the limiting guide groove 204. It is understood that the limiting guide groove 204 can guide and restrict the displacement of the refrigeration pipe 800, improving the utilization rate of the internal space of the overhang 200, making the refrigeration pipe 800 more orderly arranged. Furthermore, water dripping from the refrigeration pipe 800 can accumulate in the limiting guide groove 204. The water flows along the limiting guide groove 204 to the inner wall of the outer shell assembly 100 and then flows downwards to be discharged outside the outer shell assembly 100 or downwards to a water collection tray. The limiting guide groove 204 serves a dual purpose.

[0035] See Figure 4In some embodiments of this utility model, the enclosure has an upward-facing top opening, and the side extension plate 201 is provided with a mounting groove 205 located within the enclosure to accommodate the micro switch 210. The mounting groove 205 has an upward-facing mounting opening, and the edge of the mounting opening is provided with a plurality of elastic hooks 206 at intervals to engage and fix the micro switch 210. It can be understood that when installing the micro switch 210, one only needs to grasp the micro switch 210 and insert it downwards along the top opening of the enclosure. The micro switch 210 enters the mounting groove 205 from the mounting opening and is fixed by the engagement of the elastic hooks 206, without the need for screws, making assembly very simple.

[0036] See Figure 4 In some embodiments of this utility model, the mounting groove 205 is elongated, one end of the bottom wall of the mounting groove 205 is provided with a through opening 207, and the other end of the bottom wall of the mounting groove 205 is provided with a positioning protrusion 208. The bottom wall of the micro switch 210 is provided with a positioning groove that matches the positioning protrusion 208. The positioning groove and the positioning protrusion 208 cooperate to prevent the micro switch 210 from moving along the length direction of the mounting groove 205.

[0037] See Figure 4 In some embodiments of this utility model, the mounting groove 205 is provided with a plurality of elastic hooks 206 at intervals along both sides of its length direction. Each elastic hook 206 includes an elastic arm extending vertically upward and a hook portion located at the upper end of the elastic arm. The hook portion has a guide slope for the micro switch 210 to be inserted downward into the mounting groove 205. It should be noted that the elastic hooks 206, the mounting groove 205, the surrounding plate, and the side extension plate 201 are an integral structure made of plastic, which is obtained by integral injection molding, making the processing very simple. When assembling the micro switch 210, the lower edges of the two side walls of the micro switch 210 contact the guide slope and continue to move downward. The two elastic arms facing each other can move away from each other. When the micro switch 210 completely passes the hook portion, the elastic arm restores its elastic deformation and fixes the micro switch 210 in the mounting groove 205, making the assembly very quick.

[0038] See Figure 2 and Figure 3 In some embodiments of this utility model, the upper surface of the side extension plate 201 near the outer shell assembly 100 is provided with an upwardly extending support column 230, which abuts against the inner top wall of the side extension shell 202. When the side extension plate 201 is bent and deformed downward by the gravity of the evaporator 300 and the stirring mechanism 400, the side extension shell 202 and the side extension plate 201 form a frame, which suppresses the downward bending deformation of the side extension plate 201. The above-mentioned support column 230 can support the inside of the frame, improving the bending resistance of the frame.

[0039] See Figure 1 and Figure 2 In some embodiments of this utility model, the material tank 500 has an upward-opening cavity. The material tank 500 can be fitted onto the outside of the evaporator 300 and the stirring mechanism 400 from bottom to top and can be detached from the evaporator 300 and the stirring mechanism 400 from top to bottom. The micro switch 210 is movably provided with a driving component 211 extending below the cantilever portion 200. When the material tank 500 is installed on the cantilever portion 200, the upper end of the material tank 500 can keep pushing the driving component 211 upward to trigger the micro switch 210.

[0040] The upper end of the material tank 500 pushes the drive component 211 upward to trigger the micro switch 210. At this time, the stirring mechanism 400 can be powered on and started. After the material tank 500 is separated from the evaporator 300 and the stirring mechanism 400 from top to bottom, the micro switch 210 automatically disconnects when the drive component 211 is no longer being pushed up, so that the stirring mechanism 400 cannot be driven. This avoids the problem of accidentally touching the micro switch 210 during the removal of the material tank 500, and also avoids the problem of the horizontal dimension of the electrical equipment increasing when the drive component 211 is placed horizontally, which helps to reduce the size of the electrical equipment.

[0041] See Figure 1 In some embodiments of this utility model, the material tank 500 is cylindrical, and its upper end is an annular abutment plane opposite to the driving component 211. The lower end of the overhang 200 is provided with an annular mounting member 240 that can extend downward into the material tank 500. The evaporator 300 passes downward through the middle channel of the annular mounting member 240. At least two rotating fasteners 510 are formed on the upper edge of the inner peripheral wall of the material tank 500, and the outer peripheral wall of the annular mounting member 240 is provided with rotating grooves 241 that correspond one-to-one with the rotating fasteners 510. The installation structure using rotating fasteners 510 and rotating grooves 241 is beneficial for the disassembly of the material tank 500 and its stability after installation.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A micro switch waterproof structure of a frozen food manufacturing apparatus, characterized by comprising: include: A vertically extending outer casing assembly (100) has a cantilever portion (200) extending out from one side of its top. The cantilever portion (200) houses a vertically downward extending evaporator (300) and a stirring mechanism (400) cooperating with the evaporator (300). The cantilever portion (200) also includes a material container (500) fitted around the evaporator (300) and the stirring mechanism (400). Inside the outer casing assembly (100) are a compressor (600) and a throttling element (700). The compressor (600) and the evaporator (300)... A refrigeration pipe (800) is provided between the throttling element (700) and the evaporator (300). The interior of the overhang (200) is provided with a pipe-passing area for the two sections of the refrigeration pipe (800) to pass through. The overhang (200) is provided with a micro switch (210) located on one side of the refrigeration pipe (800). The periphery of the micro switch (210) is provided with a waterproof structure (220) that is isolated from the refrigeration pipe (800). The micro switch (210) can be triggered by the material tank (500) to control the power supply of the stirring mechanism (400).

2. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 1, characterized in that: The waterproof structure (220) includes a surrounding plate around the periphery of the micro switch (210), the surrounding plate having a side opening toward the interior of the housing assembly (100), and the electrical terminals of the micro switch (210) toward the side opening of the surrounding plate.

3. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 2, characterized in that: The overhang (200) includes a side plate (201) extending horizontally along the top of the side wall of the housing assembly (100) near the evaporator (300). The upper part of the housing assembly (100) is provided with a side shell (202) covering the side plate (201). The surrounding plate is formed on the upper surface of the side plate (201), and the side plate (201) forms the pipe penetration area on the outside of the surrounding plate.

4. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 3, characterized in that: The side extension plate (201) has a mounting through hole (203) in the middle for the evaporator (300) to pass through downward. The side extension plate (201) near the outer shell assembly (100) has a limiting guide groove (204) recessed along the upper surface of the side extension plate (201) between the end of the side extension plate (201) and the mounting through hole (203). The refrigeration pipe (800) is arranged along the extension direction of the limiting guide groove (204).

5. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 3, characterized in that: The enclosure has an upward-facing top opening, and the side extension plate (201) is provided with a mounting groove (205) located inside the enclosure to accommodate the micro switch (210). The mounting groove (205) has an upward-facing mounting opening, and the edge of the mounting opening is provided with a plurality of elastic hooks (206) that are spaced apart to engage and fix the micro switch (210).

6. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 5, characterized in that: The mounting groove (205) is elongated, and one end of the bottom wall of the mounting groove (205) is provided with a through opening (207). The other end of the bottom wall of the mounting groove (205) is provided with a positioning protrusion (208). The bottom wall of the micro switch (210) is provided with a positioning groove that matches the positioning protrusion (208).

7. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 6, characterized in that: The mounting groove (205) is provided with a plurality of elastic hooks (206) at intervals on both sides along its length direction. Each elastic hook (206) includes an elastic arm extending vertically upward and a hook portion provided at the upper end of the elastic arm. The hook portion has a guide slope for the micro switch (210) to be inserted downward into the mounting groove (205).

8. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 3, characterized in that: The upper surface of the side extension plate (201) near the outer shell assembly (100) is provided with an upwardly extending support column (230), which abuts against the inner top wall of the side extension shell (202).

9. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 1, characterized in that: The material tank (500) has an upward-opening cavity. The material tank (500) can be fitted onto the outside of the evaporator (300) and the stirring mechanism (400) from bottom to top and can be detached from the evaporator (300) and the stirring mechanism (400) from top to bottom. The micro switch (210) is movably provided with a driving component (211) extending below the cantilever (200). When the material tank (500) is installed on the cantilever (200), the upper end of the material tank (500) can keep pushing the driving component (211) upward to trigger the micro switch (210).

10. The waterproof microswitch structure for a frozen food manufacturing equipment according to claim 9, characterized in that: The material barrel (500) is cylindrical. The upper end of the material barrel (500) is an annular abutment plane opposite to the driving component (211). The lower end of the overhang (200) is provided with an annular mounting member (240) that can extend downward into the material barrel (500). The evaporator (300) passes downward through the middle channel of the annular mounting member (240). At least two rotating fasteners (510) are formed on the upper edge of the inner peripheral wall of the material barrel (500). The outer peripheral wall of the annular mounting member (240) is provided with rotating slots (241) that correspond one-to-one with the rotating fasteners (510).

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