Motor heat dissipation structure and food mixer

Abstract

The utility model discloses a motor heat dissipation structure and a food mixer, and relates to the technical field of food mixers.The motor heat dissipation structure comprises a shell, an air inlet cavity, a cooling cavity and an air outlet are formed in the shell, the air inlet cavity is provided with a wind wheel, a motor body is arranged in the cooling cavity, and the air outlet and the air inlet cavity are located at the two ends of the motor body; a flow deflector wrapping the radial periphery of the wind wheel is arranged in the cooling cavity, a gap is formed between the flow deflector and the radial peripheral wall of the wind wheel, the width of the gap is smaller than the distance between the flow deflector and the outer wall of the shell in the radial direction of the wind wheel, and the gap between the flow deflector and the wind wheel is small, so that the air pressure of inlet air can be increased easily; therefore, the exhaust efficiency and the heat dissipation effect are improved, and the working stability and the working efficiency of the motor are improved. The food stirring machine comprises a machine head and a base, the machine head is arranged on the base, the machine head comprises a shell and a motor body, the machine head is provided with a stirrer, and the stirrer is in power connection with a rotating shaft to achieve the stirring function.

Description

Technical Field

[0001] The utility model relates to the technical field of food mixers, in particular to a motor heat dissipation structure and a food mixer. Background Art

[0002] In the related art, food mixers are often used to knead dough, stir or mix a variety of ingredients. Food mixers are driven by motors, and the motors will generate more heat after working for a long time. Therefore, most motors are equipped with cooling fans. The current motor cooling fans have low exhaust efficiency, resulting in insufficient air pressure at the incoming air and poor heat dissipation effect. Food mixers are prone to shut down due to motor overheating, affecting production efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a motor heat dissipation structure and a food mixer, which can improve the heat dissipation effect, thereby improving the working stability and efficiency of the food mixer.

[0004] According to a first aspect of the present invention, a motor heat dissipation structure includes:

[0005] The outer shell has an air inlet cavity, a cooling cavity and an air exhaust port inside. The air inlet cavity is provided with a wind wheel. The cooling cavity is provided with a motor body. The air exhaust port and the air inlet cavity are located at two ends of the motor body. The cooling cavity is provided with a guide vane wrapped around the radial periphery of the wind wheel. A gap is provided between the guide vane and the radial outer peripheral wall of the wind wheel, and along the radial direction of the wind wheel, the width of the gap is smaller than the distance between the guide vane and the outer wall of the outer shell.

[0006] A motor heat dissipation structure according to an embodiment of the first aspect of the utility model has at least the following beneficial effects: this embodiment is provided with a shell, an air inlet chamber, a cooling chamber and an air exhaust port are provided inside the shell, the air inlet chamber is provided with a wind wheel, the cooling chamber is provided with a motor body, the air exhaust port and the air inlet chamber are located at both ends of the motor body, and the cooling chamber is provided with a guide vane wrapped around the radial outer periphery of the wind wheel, a gap is provided between the guide vane and the radial outer peripheral wall of the wind wheel, and along the radial direction of the wind wheel, the width of the gap is smaller than the distance between the guide vane and the outer wall of the shell, and the gap between the guide vane and the wind wheel is small, which helps to increase the wind pressure of the incoming air, thereby improving the exhaust efficiency and heat dissipation effect, and improving the working stability and working efficiency of the motor.

[0007] According to an embodiment of the first aspect of the utility model, along the direction of the rotation axis of the wind wheel, the length of the gap is greater than half of the thickness of the wind wheel.

[0008] According to the embodiment of the first aspect of the utility model, a fairing is provided at one end of the shell where the air inlet cavity is provided, the guide vane is located on the fairing, and the fairing has an air inlet.

[0009] According to an embodiment of the first aspect of the utility model, the distance between the air inlet and the wind wheel along the direction of the rotation axis is smaller than the width of the gap along the radial direction.

[0010] According to an embodiment of the first aspect of the utility model, a support plate is provided in the housing, the support plate is located between the air inlet cavity and the cooling cavity, and the support plate has ventilation holes that allow air to flow.

[0011] According to an embodiment of the first aspect of the utility model, an air guide portion is provided at one end of the housing where the air outlet is provided. The air guide portion has an arc surface, and the inner side of the arc surface faces the motor body.

[0012] According to an embodiment of the first aspect of the utility model, the air guide portion is annular, and the annular center of the air guide portion is located on the rotation axis of the wind wheel.

[0013] According to the embodiment of the first aspect of the utility model, the motor body includes a stator and a rotor, the stator is fixed in the shell, a rotating shaft is passed through the rotor, and two ends of the rotating shaft are pivotally connected to the air guide part and the support plate respectively.

[0014] According to an embodiment of the first aspect of the utility model, the air outlet is located on the side wall of the housing, and along the axial direction of the motor body, the air outlet is located between the stator and the air guide portion.

[0015] According to an embodiment of the second aspect of the utility model, a food mixer is provided, comprising the above-mentioned motor heat dissipation structure, the motor heat dissipation structure comprising a housing and a motor body, a rotating shaft is provided in the motor body, and the motor body comprises:

[0016] The machine head and the base are arranged on the base, the machine head comprises a shell and a motor body, the machine head is provided with a stirrer, and the stirrer is connected with the rotating shaft by power.

[0017] The food mixer according to the second embodiment of the utility model has at least the following beneficial effects: the embodiment is provided with a head and a base, the head is arranged on the base, and the head is provided with a stirrer to realize the stirring function. The head includes a shell and a motor body, the shell is provided with an air inlet cavity and a cooling cavity, the air inlet cavity is provided with a wind wheel, the cooling cavity is provided with a motor body, the cooling cavity is provided with a guide vane wrapped around the radial periphery of the wind wheel, there is a gap between the guide vane and the radial peripheral wall of the wind wheel, and along the radial direction of the wind wheel, the width of the gap is smaller than the distance between the guide vane and the outer wall of the shell, the gap between the guide vane and the wind wheel is small, which helps to increase the wind pressure of the incoming air, thereby improving the exhaust efficiency and heat dissipation effect, and improving the working stability and working efficiency of the food mixer.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 A cross-sectional view of a motor heat dissipation structure in an embodiment of the first aspect of the utility model;

[0021] Figure 2 for Figure 1 A magnified view of center A;

[0022] Figure 3 for Figure 1 Magnified view of middle B;

[0023] Figure 4 It is a cross-sectional view of a food mixer in an embodiment of the second aspect of the utility model.

[0024] Reference numerals:

[0025] Housing 100; air inlet chamber 101; cooling chamber 102; air outlet 103; wind wheel 104; motor body 105; rotor 106; rotating shaft 107; support plate 108; vent 109; air guide 110; arc surface 111; stator 112;

[0026] Fairing 120; guide vane 121; gap 122; air inlet 123;

[0027] Machine head 130; base 131; stirrer 132; connecting shaft 133. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] In the related art, food mixers are often used to knead dough, stir or mix a variety of ingredients. Food mixers are driven by motors, and the motors will generate more heat after working for a long time. Therefore, most motors are equipped with cooling fans. The current motor cooling fans have low exhaust efficiency, resulting in insufficient air pressure at the incoming air and poor heat dissipation effect. Food mixers are prone to shut down due to motor overheating, affecting production efficiency.

[0033] To solve the above problems, refer to Figure 1 In an embodiment of the first aspect of the utility model, a motor heat dissipation structure is provided, including a shell 100, wherein an air inlet chamber 101, a cooling chamber 102 and an air outlet 103 are arranged inside the shell 100, the air inlet chamber 101 is provided with a wind wheel 104, and a motor body 105 is arranged in the cooling chamber 102, and the air outlet 103 and the air inlet chamber 101 are located at both ends of the motor body 105. It can be understood that when the wind wheel 104 rotates, it drives air from the air inlet chamber 101 into the cooling chamber 102, the air contacts the motor in the cooling chamber 102 and takes away the heat generated by the motor, and then the air is discharged from the air outlet 103 to the outside of the shell 100, thereby realizing the cooling function of the motor. A guide vane 121 is provided in the cooling chamber 102 and is wrapped around the radial outer periphery of the wind wheel 104. A gap 122 is provided between the guide vane 121 and the radial outer peripheral wall of the wind wheel 104, and along the radial direction of the wind wheel 104, the width of the gap 122 is smaller than the distance between the guide vane 121 and the outer wall of the housing 100. This can make the gap 122 between the guide vane 121 and the wind wheel 104 smaller, which helps to increase the wind pressure of the incoming air, thereby improving the exhaust efficiency and heat dissipation effect, and enhancing the working stability and efficiency of the motor.

[0034] It can be understood that the wind wheel 104 has multiple blades. When the wind wheel 104 rotates, the blades drive the air to pass through the wind wheel 104 and reach the cooling chamber 102. By providing the guide vane 121, the airflow can be more concentrated, which helps to increase the wind pressure in the air inlet chamber 101, and the width of the gap 122 is smaller than the distance between the guide vane 121 and the outer wall of the shell 100. By reducing the gap 122 between the guide vane 121 and the wind wheel 104, the concentration of the airflow is further improved to increase the wind pressure and improve the heat dissipation efficiency.

[0035] Furthermore, a fairing 120 is provided at one end of the housing 100 where the air inlet cavity 101 is provided, and a guide vane 121 is located on the fairing 120. The fairing 120 has an air inlet 123, and the distance between the air inlet 123 and the wind wheel 104 along the direction of the rotation axis is smaller than the width of the gap 122 along the radial direction, so that the guide vane 121 is closer to the radial periphery of the wind wheel 104 and the width of the gap 122 is reduced, further improving the exhaust efficiency of the wind wheel 104 and the wind pressure of the air inlet cavity 101. In the embodiment of the present application, the width of the gap 122 along the radial direction of the wind wheel 104 is preferably 3 mm to 5 mm to ensure good air extraction efficiency.

[0036] Furthermore, along the direction of the rotation axis of the wind wheel 104, the length of the gap 122 is greater than half the thickness of the wind wheel 104. It can be understood that the wind wheel 104 overlaps with the guide vane 121 along the direction of the rotation axis, and the length of the gap 122 is the overlapping length of the wind wheel 104 and the guide vane 121. Limiting the length of the gap 122 to be greater than half the thickness of the wind wheel 104 helps to ensure that the guide vane 121 effectively guides the air, thereby ensuring a good effect of increasing wind pressure and effectively improving the exhaust efficiency of the wind wheel 104.

[0037] Reference Figure 2 It can be understood that a fixed support plate 108 is provided in the housing 100, and the support plate 108 is located between the air inlet chamber 101 and the cooling chamber 102. The support plate 108 has a vent 109 that allows air to flow. It can be understood that the motor body 105 includes a stator 112 and a rotor 106, and the stator 112 is fixed in the housing 100. A rotating shaft 107 is passed through the rotor 106, and one end of the rotating shaft 107 is pivotally connected to the support plate 108. The vent 109 is provided on the support plate 108 to help air flow from the air inlet chamber 101 to the cooling chamber 102, thereby realizing the function of cooling the motor body 105.

[0038] It can be understood that the wind wheel 104 is fixedly connected to the end of the rotating shaft 107 away from the motor body 105. When the rotor 106 rotates, the wind wheel 104 can rotate synchronously with the rotating shaft 107, so that when the motor body 105 is started, the wind wheel 104 can realize the function of exhausting air and dissipating heat, thereby meeting the reliability of the heat dissipation function.

[0039] Reference Figure 3 The end of the housing 100 where the air outlet 103 is arranged is provided with an air guide portion 110, and the air guide portion 110 has an arc surface 111, and the inner side of the arc surface 111 faces the motor body 105. It can be understood that the air guide portion 110 is located at the end of the motor body 105 away from the wind wheel 104, and the air outlet 103 is located on the side wall of the housing 100, and along the axial direction of the motor body 105, the air outlet 103 is located between the stator 112 and the air guide portion 110. When the wind wheel 104 rotates, the air flows from the air inlet chamber 101 to the direction of the air outlet 103. When the air flows to the air guide portion 110, under the guidance of the arc surface 111, the air flows in the direction close to the rotating shaft 107 (refer to Figure 1 N1 and Figure 3 N2 in the air outlet 103), so that the air is guided to the exhaust port 103 and discharged to the outside of the housing 100 to take away the heat of the motor body 105. Further, the air guide 110 is annular, and the air guide 110 is fixedly installed in the housing 100. The annular center of the air guide 110 is located on the rotation axis of the wind wheel 104. At the same time, the end of the rotating shaft 107 away from the wind wheel 104 is pivotally connected to the air guide 110. Therefore, the arc surface 111 is annularly arranged on the outer periphery of the rotating shaft 107, which helps to optimize the flow efficiency of the air, thereby improving the heat dissipation effect on the motor.

[0040] Reference Figure 4 According to an embodiment of the second aspect of the utility model, a food mixer is provided, including the aforementioned motor heat dissipation structure, the food mixer also includes a head 130 and a base 131, the head 130 is arranged on the base 131, the head 130 is provided with a stirrer 132, it can be understood that the stirrer 132 is used to stir food, the stirrer 132 is provided with a connecting shaft 133, the connecting shaft 133 is inserted into the shell 100 and is dynamically connected to the rotating shaft 107, so that the motor body 105 drives the stirrer 132 to realize the stirring function.

[0041] It can be understood that the head 130 includes a shell 100 and a motor body 105, the shell 100 is provided with an air inlet chamber 101 and a cooling chamber 102, the air inlet chamber 101 is provided with a wind wheel 104, the cooling chamber 102 is provided with a motor body 105, the cooling chamber 102 is provided with a guide vane 121 wrapped around the radial outer periphery of the wind wheel 104, and a gap 122 is provided between the guide vane 121 and the radial outer peripheral wall of the wind wheel 104, and along the radial direction of the wind wheel 104, the width of the gap 122 is smaller than the distance between the guide vane 121 and the outer wall of the shell 100, and the gap 122 between the guide vane 121 and the wind wheel 104 is small, which helps to increase the wind pressure of the incoming air, thereby improving the exhaust efficiency and heat dissipation effect, and improving the working stability and work efficiency of the food mixer.

[0042] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A motor heat dissipation structure, characterized in that: include: The outer shell has an air inlet cavity, a cooling cavity and an air outlet inside, the air inlet cavity is provided with a wind wheel, the cooling cavity is provided with a motor body, the air outlet and the air inlet cavity are located at two ends of the motor body, the cooling cavity is provided with a guide vane wrapped around the radial outer periphery of the wind wheel, a gap is provided between the guide vane and the radial outer peripheral wall of the wind wheel, and along the radial direction of the wind wheel, the width of the gap is smaller than the distance between the guide vane and the outer wall of the outer shell.

2. A motor heat dissipation structure according to claim 1, characterized in that: Along the rotation axis direction of the wind wheel, the length of the gap is greater than half of the thickness of the wind wheel.

3. A motor heat dissipation structure according to claim 1, characterized in that: One end of the shell where the air inlet cavity is arranged is provided with a fairing, the guide vane is located on the fairing, and the fairing has an air inlet.

4. A motor heat dissipation structure according to claim 3, characterized in that: The distance between the air inlet and the wind wheel along the direction of the rotation axis is smaller than the width of the gap along the radial direction.

5. The motor heat dissipation structure according to claim 1, characterized in that: A support plate is arranged inside the shell, and the support plate is located between the air inlet cavity and the cooling cavity. The support plate has a ventilating opening that allows air to flow.

6. A motor heat dissipation structure according to claim 5, characterized in that: An air guide portion is provided at one end of the housing where the air outlet is provided. The air guide portion has an arc surface, and the inner side of the arc surface faces the motor body.

7. A motor heat dissipation structure according to claim 6, characterized in that: The wind guide portion is annular in shape, and the center of the annular shape of the wind guide portion is located on the rotation axis of the wind wheel.

8. The motor heat dissipation structure according to claim 7, characterized in that: The motor body comprises a stator and a rotor, wherein the stator is fixed in the housing, a rotating shaft is passed through the rotor, and two ends of the rotating shaft are pivotally connected to the air guide portion and the support plate respectively.

9. A motor heat dissipation structure according to claim 8, characterized in that: The air outlet is located on the side wall of the shell and along the axial direction of the motor body, and the air outlet is located between the stator and the air guide portion.

10. A food mixer, comprising a motor heat dissipation structure according to any one of claims 1 to 9, the motor heat dissipation structure comprising a housing and a motor body, wherein a rotating shaft is provided in the motor body, wherein: include: A machine head and a base, wherein the machine head is arranged on the base, the machine head comprises the shell and the motor body, the machine head is provided with a stirrer, and the stirrer is dynamically connected to the rotating shaft.

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