Waterproof heat dissipation device for food stirring rod

Abstract

The present invention provides a waterproof heat dissipation device for a food stirring rod, comprising a spacer assembly and a heat dissipation assembly, wherein the spacer assembly wraps the motor assembly of the stirring rod as a whole, the heat dissipation assembly is connected to the motor assembly, and the spacer assembly is installed between the motor assembly of the stirring rod and the housing assembly, the housing assembly is provided with an air inlet and an air outlet, and the two ends of the spacer assembly are respectively provided with a vent and an air outlet hole, so that air can enter the vent along the air inlet and pass through the motor assembly to be discharged from the air outlet hole to the air outlet, and the air outlet hole also extends to the side wall to form a U-shaped air outlet notch. The present invention can meet the testing standards of GB‑4208‑2008, meet the requirements that each live component will not have harmful effects such as leakage and short circuit after spraying water, and fully meet the motor temperature control requirements of the stirring rod. It can effectively protect the safety of the environment, equipment and people.

Description

Technical Field

[0001] The invention relates to the technical field of food machinery, and in particular to a waterproof heat dissipation device for a food stirring rod. Background Art

[0002] With the development of economy, social progress and improvement of quality of life, the food on the table is becoming more and more abundant and diverse. The application of food stirring sticks is becoming more and more extensive. Some developed countries such as the United States, Canada and European countries have successively promulgated relevant laws and regulations, and the safety level requirements for such products are becoming more and more stringent. More specifically, it involves the GB-4208-2008 standard, which is equivalent to IEC60529:2001 "Enclosure Protection Level (IP Code)" (English version). That is: prevent solid objects larger than 12mm from invading the interior of the product, and the water sprayed during the safety verification experiment will not cause harmful effects from the 60-degree corner to the housing components.

[0003] In the field of food stirring bars, the related technical details that can meet this requirement are unprecedented in the prior art. It can also be said that in the future, this related technical detail will have a huge impact on the market of this product.

[0004] During the search, I found Classification internationale des brevets 6: A47J 43 / 08, 43 / 07. This technology has quite detailed considerations for product cleaning and disinfection, and preventing food from entering the output shaft and then corroding. However, in the water spray test, the treatment of water droplets entering the housing assembly from the vents is still lacking in effective features, and cannot meet the GB-4208-2008 standard. Reason: During the water spray test, the water flow entering the housing assembly from the inlet and outlet vents, due to the effect of surface tension, rolls inward along the end face of the spacer sleeve, passes through the gap between the fan and the spacer sleeve, and can still enter the inner wall. When enough water accumulates, it will invade the motor assembly and other live parts and components.

[0005] For this reason, the market is in urgent need of a food stirring rod ventilation and waterproof technology that can meet the requirements of GB-4208-2008 standard.

[0006] More specifically, when the product is placed vertically or horizontally along the motor axis, solid objects larger than 12 mm cannot penetrate into the interior of the product. At the same time, by spraying water, water falling from a 60-degree angle onto the surface of the shell has no harmful effects.

[0007] However, food stirrers usually generate heat when in use, so ventilation and heat dissipation channels must be set up for the motor. Therefore, in general, products with higher power will have air inlets and outlets on the outside of the housing assembly to allow air to pass through the gaps between the rotors and stators and form heat dissipation channels on the surface.

[0008] This is in conflict with the requirements of GB-4208-2008. To put it simply, the need to ventilate the motor assembly in the housing assembly and prevent water from entering the motor assembly and live parts during the water spray test has become a difficult problem that needs to be solved in the field of product technology. In the prior art, there is no effective solution. Summary of the invention

[0009] The present invention provides a waterproof heat dissipation device for a food stirring rod. By technically transforming the existing equipment, when the casing assembly is placed vertically or horizontally, the relevant methods and equipment described in the GB-4208-2008 standard are tested, so that water falling on the surface of the casing assembly can pass through the air inlet and outlet, but cannot enter the motor assembly and other live parts to cause harmful effects.

[0010] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions:

[0011] A waterproof heat dissipation device for a food stirring rod comprises a spacer sleeve assembly and a heat dissipation assembly, wherein the spacer sleeve assembly wraps the motor assembly of the stirring rod as a whole, the heat dissipation assembly is connected to the motor assembly, and the spacer sleeve assembly is installed between the motor assembly of the stirring rod and a casing assembly, the casing assembly is provided with an air inlet and an air outlet, and both ends of the spacer sleeve assembly are respectively provided with a vent and an air outlet hole, so that air can enter the vent along the air inlet and pass through the motor assembly and be discharged from the air outlet to the air outlet, and the air outlet hole also extends to the side wall to form a U-shaped air outlet notch.

[0012] Preferably, the spacer assembly includes a front spacer, a middle spacer and a rear spacer, and the front spacer, the middle spacer and the rear spacer can be interlocked to wrap the motor assembly, the vent is arranged on the front spacer, and the U-shaped air outlet notch is arranged at the tail end of the rear spacer, that is, close to the air outlet of the casing assembly.

[0013] Preferably, the ventilation opening and the U-shaped air outlet notch are both provided with a protective skirt that is higher than the outer peripheral wall and rolled outward.

[0014] Preferably, the spacer assembly comprises a front spacer, a middle spacer and a rear spacer, and the spacer assembly can be designed to be horizontally separated and capable of interlocking with each other to wrap the upper and lower parts of the stirring rod motor assembly.

[0015] Preferably, the heat dissipation assembly includes a multi-stage fan, the multi-stage fan is mounted on the motor assembly, and the multi-stage fan includes several groups of fans.

[0016] Preferably, the multi-stage fan is divided into two groups, namely a first fan and a second fan, and the trailing edge of the blades of the first fan is staggered with the leading edge of the blades of the second fan.

[0017] Preferably, a wire hole is further provided on the rear spacer, a wire rubber sleeve is provided in the wire hole, and the wire rubber sleeve is used for expansion-tightening the power supply wire.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The water and air flowing in from the air inlet are respectively constrained by the front and rear spacer structures, and their flow paths are different. Water can enter the housing assembly through the air inlet, but is blocked by the protective skirt on the spacer and cannot flow into the inner surface of the spacer. Therefore, water cannot enter the motor assembly and contact the live parts, meeting the conditions and requirements of the standard for the water spray test. However, when in working state, the air driven by the motor fan can pass over the raised protective skirt, flow through the gap between the motor rotor and stator and the inner and outer surfaces, pass through the air outlet holes on the spacer assembly and the U-shaped air outlet notch on the side wall, and finally be discharged from the air outlet of the housing assembly.

[0020] 1) The spacer assembly described in the present invention is designed with ventilation holes and air outlets at both ends and a U-shaped notch extending to its side wall, and the motor assembly is wrapped therein as a whole. The spacer assembly is installed between the casing assembly of the stirring rod and the motor assembly, and plays a role in supporting and positioning the motor assembly.

[0021] 2) The spacer assembly is divided into a front spacer and a rear spacer or a horizontally divided upper and lower spacer part. The ventilation opening of the front spacer assembly is rectangular in shape and has a protective skirt that rolls outward to prevent water from entering the motor assembly when passing through, but allows ventilation and heat dissipation airflow to pass through. However, if the air outlet on the rear spacer also adopts this structure, due to the limitation of the volume of the machine casing assembly, the cross-sectional area formed by the air outlet and the inner wall of the casing assembly and the space for the heat dissipation airflow to rotate are very small, which will produce serious eddy currents and wind resistance, affecting exhaust and heat dissipation. The cross-sectional area between the outlet hole of the spacer assembly and the casing assembly is relatively small, which is not conducive to the heat dissipation of the motor. Therefore, the outlet hole of the spacer assembly of the present invention is improved to be provided with a U-shaped notch extending backward perpendicular to the air outlet on the casing assembly, so that the cross-sectional area between the outlet hole and the casing assembly is enlarged, the eddy current and wind resistance between the spacer assembly and the casing assembly are significantly reduced, the flow rate and flow of the heat dissipation airflow are increased, and the temperature rise and heat dissipation of the motor assembly are significantly reduced.

[0022] 3) In the known technology, the motor assembly uses only one fan or a double-push axial flow fan is set at the front and rear ends respectively, or a centrifugal high-pressure fan is used to increase the wind pressure and flow of the heat dissipation airflow. Due to the limitations of plastic mold technology and cost, as well as the influence of the chord length and helix angle of the fan blades, the number of fan blades and the helix angle are contradictory. When the number of blades is the same, the helix angle will limit the axial height and area of ​​the blades (the vertical projection of the fan blades overlaps, the mold difficulty increases and the cost is high, and vice versa), thereby affecting the wind speed and flow. Wind speed and flow are key factors affecting ventilation and heat dissipation efficiency.

[0023] Therefore, in the present invention, in order to improve the heat dissipation efficiency, both wind pressure and flow rate must be considered, and the manufacturing cost of the mold and other factors such as the volume limit of the housing component must also be considered. After a large number of tests and comparisons, inspired by the fan structure of an aviation jet engine, the present invention adopts a series of at least two-stage axial flow fans, thereby creating a breakthrough in the contradictory relationship between the heat dissipation fan and the volume of the housing component and the mold cost, maximizing the heat dissipation efficiency, minimizing the volume of the housing component and the mold cost, and fully meeting the test requirements of the GB-4208-2008 standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is an exploded view of the assembly of the spacers and the motor assembly of the present invention after assembly;

[0025] FIG2 is an exploded view of the spacer assembly;

[0026] FIG3 is a projection view of the parts of the rear spacer of the present invention;

[0027] FIG4 is a perspective view of the rear spacer of the present invention;

[0028] FIG5 is a projection view, a partial cross-sectional view and a partial enlarged view of each spacer and motor assembly after assembly of the present invention;

[0029] Figure 6 is Figure 5 Sectional view of the middle AA plane;

[0030] Figure 7 is Figure 5 Rotational magnification of the middle M part;

[0031] FIG8 is a projection view of the motor assembly and the heat dissipation assembly after assembly;

[0032] FIG9 is a perspective view of the motor assembly and the heat dissipation assembly after assembly;

[0033] FIG10 is a cross-sectional view of the water spray test when the whole machine of the present invention is placed horizontally according to the GB-4208-2008 standard after assembly;

[0034] FIG11 is a cross-sectional view of the vertical water spray test according to GB-4208-2008 standard after the whole machine of the present invention is assembled;

[0035] Figure 12 is Fig.11 Enlarged view of the middle N part;

[0036] 13 is an exploded view showing the relationship between the housing assembly, the spacer, and the motor assembly after the whole machine of the present invention is assembled, as well as the ventilation and heat dissipation airflow directions during operation and the vertical water spray test of the whole machine;

[0037] FIG14 is a schematic diagram of the upper and lower spacer parts of the spacer assembly of the present invention designed to be horizontally divided;

[0038] FIG. 15 is a schematic diagram of the left and right spacer parts of the spacer assembly of the present invention, which is designed to be divided into left and right parts.

[0039] Explanation of reference numerals: spacer assembly 1, front spacer 11, vent 111, middle spacer 12, rear spacer 13, air outlet 131, U-shaped air outlet notch 1311, wire hole 132, wire rubber sleeve 133, protective skirt 14, heat dissipation assembly 2, multi-stage fan 21, first fan 211, second fan 212, motor assembly 3, casing assembly 4, air inlet 41, air outlet 42, front left casing 43, front right casing 44, rear left casing 45, rear right casing 46, air baffle 47, small hole 48, power wire 5, stirring rod assembly 6. DETAILED DESCRIPTION

[0040] The specific contents of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0041] like Figure 1-15 As shown, the present embodiment provides a waterproof heat dissipation device for a food stirring rod, comprising a spacer assembly 1 and a heat dissipation assembly 2, wherein the spacer assembly 1 wraps the motor assembly 3 of the stirring rod as a whole, the heat dissipation assembly 2 is connected to the motor assembly 3, and the spacer assembly 1 is installed between the motor assembly 3 of the stirring rod and the casing assembly 4, the casing assembly 4 is provided with an air inlet 41 and an air outlet 42, and the two ends of the spacer assembly 1 are respectively provided with a vent 111 and an air outlet hole 131, air can enter the vent 111 along the air inlet 41, pass through the motor assembly 3, and be discharged from the air outlet 131 to the air outlet 42, and the air outlet 131 is also provided with a U-shaped air outlet notch 1311 extending toward the side wall.

[0042] Furthermore, shutters are provided at the air inlet 41 and the air outlet 42, which can prevent the water flow from directly entering the interior of the casing assembly 4 and disperse and decompose the impact force of the water flow when water is sprayed on the entire machine.

[0043] Furthermore, the spacer assembly 1 includes a front spacer 11, a middle spacer 12 and a rear spacer 13, and the front spacer 11, the middle spacer 12 and the rear spacer 13 can be interlocked to wrap the motor assembly 3, the vent 111 is arranged on the front spacer 11, and the U-shaped air outlet notch 1311 is arranged at the tail end of the rear spacer 13.

[0044] The housing assembly 4 includes a front left housing 43, a front right housing 44, a rear left housing 45 and a rear right housing 46. The width of the air inlet 41 and the air outlet 42 arranged in the front left housing 43, the front right housing 44, the rear left housing 45 and the rear right housing 46 is less than 12.5 mm, and the cross-section thereof is in the shape of a louver and has a turning surface so that the water flow cannot directly enter the housing assembly 4. The motor assembly 3 can be mounted in the spacer assembly 1 composed of the front spacer 11, the middle spacer 12 and the rear spacer 13, forming a wrapped new assembly with only the motor fan assembly 22, the vent 111 and the air outlet 131 exposed. The wrapped new assembly is embedded and positioned in the housing assembly 4, and a stirring rod assembly 6 is also arranged outside the housing assembly 4.

[0045] Furthermore, the ventilation opening 111 and the U-shaped air outlet opening 1311 are both provided with a protective skirt 14 which is higher than the outer peripheral wall and rolled outward.

[0046] When the assembled whole machine is subjected to a water spray test, multiple small water jets are sprayed onto the whole machine at a specified pressure. Although some water jets are refracted and reflected when passing through the small gaps of the shutters of the air inlet 41 and the air outlet 42, reducing the impact force, under the influence of surface tension, the outer surface of the spacer assembly 1 will still be stained or flowed with water marks, and will flow to a lower place after being gathered into running water. Because the motor assembly 3 is completely wrapped by the spacer assembly 1, only the vent 111 and the air outlet 131 are exposed, and the positions of the vent 111 and the air outlet 131 are not projected on the air inlet 41 and the air outlet 42. Position, but maintains an angle close to 90° with it, and the vent 111 and the U-shaped air outlet notch 1311 are both provided with a protective skirt 14 which is higher than the outer peripheral wall and rolled outward, so as to suppress and block water from flowing to the inner surface of the spacer assembly 1. Since the periphery of the raised protective skirt 14 is far away from the air inlet 41 of the front left casing 43 and the front right casing 44, and also far away from the projected position of the air outlet 42 of the rear left casing 45 and the rear right casing 46, it can effectively prevent water droplets from entering the motor assembly 3. In this way, the water only flows on the surface between each casing and the spacer assembly 1, and cannot enter the motor assembly 3. When the whole machine is placed horizontally for a water sprinkling test, the water flow entering the casing assembly 4 will bypass the outer surface of the spacer assembly 1 and be discharged through the louvers provided at the air inlet 41 and the air outlet 42 on the other side of the casing assembly 4; when the whole machine is placed vertically for a water spraying test, the splashed water flow will flow out through the air inlet 41 of the front left casing 43, the front right casing 44 and the small hole 48 opened at the front end of the casing assembly 4.

[0047] Furthermore, the heat dissipation component 2 includes a multi-stage fan 21 at the rear end, the multi-stage fan 21 at the rear end is installed on the motor component 3, and the multi-stage fan 21 at the rear end includes several groups of fans.

[0048] Furthermore, the multi-stage fan 21 is divided into two groups, namely a first fan 211 and a second fan 212. The trailing edge of the blades of the first fan 211 is staggered with the starting edge of the blades of the second fan 212 to facilitate rectifying the airflow passing through the blades of the previous stage fan and reduce turbulence and wind resistance.

[0049] Furthermore, an air baffle 47 is provided in the rear left casing 45 and the rear right casing 46. Since the vents 111 and the air outlet holes 131 are provided on the front sleeve 11 and the rear sleeve 13, when the two sets of fans in the heat dissipation assembly 2 rotate, cold air enters the outer surface of the motor assembly 3 from the vents 111 of the front sleeve 11 in the sleeve assembly 1, and after absorbing the heat emitted by the motor, it is discharged from the U-shaped air outlet notch 1311 of the rear sleeve 13 under the negative pressure of the front fan on the motor assembly 3 and the multi-stage fan 21 at the rear end of the heat dissipation assembly 2. The discharged airflow is blocked, turned back and rotated by the air baffle 47 in the rear left casing 45 and the rear right casing 46, and can only be discharged to the air outlet 42.

[0050] Furthermore, a wire hole 132 is provided on the rear spacer 13 , and a wire rubber sleeve 133 is provided in the wire hole 132 . The wire rubber sleeve 133 is used for expansion and tightening the motor power supply wire 5 .

[0051] The water and air flowing into the whole machine from the air inlet 41 of this embodiment are respectively constrained by the front spacer 11 and the rear spacer 13 structures, and the water cannot enter the motor assembly 3 and contact the live parts, meeting the requirements of the standard. When in working state, the air driven by the two sets of fans, the first fan 211 and the second fan 212 on the heat dissipation assembly 2, can pass over the protrusion of the spacer assembly 1 and the protective skirt 14, and flow through the gap between the rotor and stator and the inner and outer surfaces of the motor assembly 3, forming an air cooling and heat dissipation effect.

[0052] Figure 1 It is an exploded view of the spacer assembly 1 and the motor assembly 3 after being assembled according to the present invention.

[0053] Figure 2 It is an exploded view of the spacer assembly 1 of the present invention.

[0054] Figure 3The figure is a projection view of the rear spacer 13 of the present invention, and its important feature is the U-shaped air outlet notch 1311 on the end surface. Due to the addition of the U-shaped air outlet notch 1311, most of the airflow passing through the front fan and the rear multi-stage fan 21 is deflected by the air baffle 47, and then turned from the U-shaped air outlet notch 1311 and discharged from the air outlet 42 of the housing assembly 4. Since the U-shaped air outlet notch 1311 has a large cross-section, the wind resistance is significantly reduced, thereby improving the heat dissipation efficiency, thereby reducing the motor temperature and meeting the motor temperature control requirements.

[0055] Figure 5 It is a diagram of the assembly after the motor assembly 3, the front spacer 11, the middle spacer 12, and the rear spacer 13 are assembled. Please note that the heat dissipation assembly 2 at the rear end of the motor assembly 3 adopts a dual-fan design, and the diameters of the first fan 211 and the second fan 212 are different, the number of fan blades is also different, and the spiral angles of the fan blades are also different. In addition, the end edge and the starting edge of the two are staggered during installation, which is conducive to rectifying the airflow discharged by the previous fan and reducing wind resistance.

[0056] Figure 7 shows Figure 5 In the enlarged view of the M part in the rotation, a wire rubber sleeve 133 is installed in the rear spacer 13, and the motor power wire 5 is inserted into it and electrically connected to the motor assembly 3. The expansion seal of the wire rubber sleeve 133 prevents the low-pressure water flow flowing through the rear spacer 13 from entering the interior of the motor assembly 3, preventing the occurrence of dangerous situations such as leakage and short circuit.

[0057] Figure 8 FIG. 9 is a projection view of the motor assembly 3 and the heat dissipation assembly 2, and FIG. 10 is a stereogram of the motor assembly 3 and the heat dissipation assembly 2. A first fan 211 is installed at the rear end of the motor, and a second fan 212 is installed thereafter. This multi-stage fan structure can more effectively utilize the space inside the casing, and can significantly increase the flow rate and wind pressure during operation. Under the premise that the casing space conditions are the same, the heat dissipation effect of the motor during operation can be significantly improved. Since the fan is a bipolar axial flow fan composed of two parts, the cost of the fan mold can be significantly reduced. Of course, this bipolar fan can also be replaced by a multi-stage axial flow fan, and its reason and effect are similar. It is also worth mentioning that the blade tail end of the first fan 211 and the blade front end of the second fan 212 are staggered, which can significantly improve the exhaust efficiency of the multi-stage fan.

[0058] Fig.10 This is a cross-sectional view of the whole machine placed horizontally for water spray test in accordance with the requirements of GB-4208-2008 standard.

[0059] In the figure, the direction indicated by the hollow arrow is the direction of the spray water flow. The 120-degree angle shown is the range of the nozzle swing angle change when spraying. The hollow arrows show that when spraying, the water flows in from the air inlet 41 and the air outlet 42 of the upper casing, and after being blocked by the shutters of the air inlet 41 and the air outlet 42, it is driven by gravity and converges into multiple streams of water, flowing to the outer surfaces of the front spacer 11, the middle spacer 12, and the rear spacer 13 of the spacer assembly 1, and finally flows out from the air inlet 41 and the air outlet 42 at the bottom of the casing. The water flow is constrained by the protective skirt 14 on the spacer assembly 1 and cannot climb over the inner surface of the spacer assembly 1.

[0060] Fig.11 This is a cross-sectional view of the whole machine when placed vertically for water spray test. Fig.12 for Fig.11 The hollow arrow in the enlarged view of the N part is the direction of the spray water flow. The 120-degree angle shown is the range of the nozzle swing angle when spraying. A small amount of water flows in from the air inlet 41 and the air outlet 42 of the upper housing, passes through the rear spacer 13, the middle spacer 12 and the front spacer 11, and is collected at the bottom of the front left housing 43 and the front right housing 44, and then flows out from the Fig.12 The housing is shown with a small hole 48 for discharge.

[0061] Fig.13 This is the water flow and air flow diagram during the vertical water spray test of the whole machine. The hollow arrow indicates the water flow direction, and the small arrow indicates the air flow direction.

[0062] As shown in the figure, water flows in from the front left housing 43, the front right housing 44, and the air outlet 42 through the shutters thereof, and reaches the outer circumferential surface of the front spacer 11, the middle spacer 12, and the rear spacer 13, i.e., the assembly 1. Since the vent 111 and the U-shaped air outlet notch 1311 of the rear spacer 13 have protective skirts 14 that are higher than their circumferential surfaces, the water cannot cross over and cannot enter the inner surface of the vent 111 and the air outlet hole 131. However, the airflow is not affected by the protective skirt 14, and can enter the vent 111, the air outlet hole 131, and the U-shaped air outlet notch 1311 of the front spacer 11 through the shutters thereof from the air inlet 41.

[0063] Because the spacer assembly 1 is mounted on and wraps the motor assembly 3, and there is a boss on the spacer assembly 1 that is mounted on the housing, the air flow can only enter through the vent 111 on the spacer assembly 1, flow through the motor assembly 3 to absorb heat, and then turn through the large-area U-shaped air outlet notch 1311 and be discharged through the air outlet 42 of the housing assembly 4.

[0064] Near the air outlet 42 of the casing, the left rear cover casing is provided with an air baffle 47 which can turn back the air flow and discharge it from the air outlet 42 on the casing through the U-shaped air outlet notch 1311 on the spacer assembly 1.

[0065] In this embodiment, the water and air flowing in from the air inlet 41 and the air outlet 42 are each constrained by the structure of the spacer assembly 1, and their flow paths are different. Water can enter the casing through the air inlet 41 and the air outlet 42, but is blocked by the protective skirt 14 on the spacer assembly 1 and cannot flow into the inner surface of the spacer assembly 1. Therefore, water cannot enter the motor assembly 3 and contact the live parts, which can meet the requirements of the standard. When in working state, the air driven by the fan at the front end of the motor and the heat dissipation assembly 2 connected thereto can pass over the raised protective skirt 14, flow through the gap between the motor rotor and the inner and outer surfaces, and pass through the air outlet holes on the spacer assembly 1 and the U-shaped air outlet notch 1311 on the side wall, and be discharged to the outside from the air outlet 42 of the casing assembly 4.

[0066] FIG. 14 is another embodiment 2 of the spacer assembly 1 of the present invention. The spacer assembly 1 is horizontally divided into upper and lower spacer parts, which can still completely wrap the motor assembly 3 and the heat dissipation assembly 2. Its functions, effects and effects are the same as those of the above embodiments.

[0067] Figure 15 is another embodiment 3 of the spacer assembly 1 of the present invention. This figure is another embodiment of the spacer assembly 1 in the present invention. The spacer assembly 1 can be designed to be separated into left and right parts, and the left and right parts can be interlocked to wrap the motor assembly 3. Its function, effect and effect are the same as the above-mentioned embodiment.

[0068] The above description is an explanation of the present invention in combination with three specific embodiments. It cannot be considered that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the field to which the present invention belongs, several deductions and substitutions can be made without departing from the concept of the present invention, and the effects are equivalent, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A waterproof heat dissipation device for a food stirring rod, characterized in that: It includes a spacer assembly and a heat dissipation assembly, wherein the spacer assembly wraps the motor assembly as a whole, the heat dissipation assembly is connected to the motor assembly, and the spacer assembly is installed between the motor assembly of the stirring rod and the housing assembly, the housing assembly is provided with an air inlet and an air outlet, the two ends of the spacer assembly are respectively provided with a vent and an air outlet, and the air outlet end surface and the side wall of the spacer assembly are provided with a U-shaped air outlet notch; The cross-sections of the air inlet and the air outlet are louver-shaped and have turning surfaces to prevent water from directly entering the casing assembly; the positions of the vents and the air outlets are not at the projected positions of the air inlet and the air outlet, but are arranged at an angle of close to 90° thereto, and the vents and the U-shaped air outlet notches are both provided with protective skirts that are higher than the outer peripheral wall and rolled outward, and the periphery of the protective skirts is away from the air inlet and also away from the projected position of the air outlet.

2. The waterproof heat dissipation device for a food stirring stick according to claim 1, characterized in that: The spacer assembly includes a front spacer, a middle spacer and a rear spacer, which can be interlocked to wrap the motor assembly. The vent is arranged on the front spacer, and the U-shaped air outlet is arranged on the side wall of the rear end of the rear spacer.

3. The waterproof heat dissipation device for a food stirring stick according to claim 1, characterized in that: The spacer assembly comprises a front spacer, a middle spacer and a rear spacer, and the spacer assembly is designed to be horizontally separated and capable of being interlocked with each other to wrap the upper and lower parts of the motor assembly.

4. The waterproof heat dissipation device for a food stirring stick according to claim 1, characterized in that: The heat dissipation component includes a multi-stage fan, which is mounted on the motor component and includes several groups of fans.

5. The waterproof heat dissipation device for a food stirring stick according to claim 2, characterized in that: The rear spacer is also provided with a wire hole, in which a wire rubber sleeve is arranged, and the wire rubber sleeve is used for expanding and tightening the sheathed wire.

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