Double-outlet drying fan

Abstract

The utility model relates to a double-outlet drying fan which comprises a volute unit, an impeller unit, a driving unit, a heating unit and two air outlet units. The fan has the advantages that the volute unit is arranged to be of a square structure, the impeller unit and the heating unit are arranged in the volute unit, the heating unit can directly heat airflow generated by the impeller unit, heat is not prone to loss, the structure is more compact and reasonable, and the airflow heating efficiency is improved; the driving unit is arranged outside the volute unit, so that the driving unit is prevented from being located at a high-temperature gas circulation section, the risk of damage to the driving unit is reduced, and the problem that a motor is located at the high-temperature gas fluid position in the fan and easily breaks down is solved; meanwhile, the number of the air outlet units is two, the air outlet efficiency is improved, air outlet can be more uniform, and the problem that drying is not uniform through a single air outlet is solved; and the stainless steel material is adopted, so that the problem of easy rusting is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying fans, in particular to a double-outlet drying fan. Background Art

[0002] With the acceleration of the pace of modern life, the functionality and efficiency of kitchen equipment, as an indispensable part of family life, are increasingly attracting people's attention, especially tableware cleaning and drying, which are directly related to the hygiene and user experience of tableware. Efficient and convenient drying equipment has become a must-have for modern family kitchens. Traditional tableware drying methods, such as natural drying or wiping with a towel, are not only inefficient, but also easily affected by the environment, resulting in residual water stains or bacterial growth on the tableware, which in turn affects the hygiene of the tableware.

[0003] As technology advances and people's quality of life improves, higher requirements are placed on the performance of drying fans. New motors, fan blades, and control technologies are constantly being applied to the design of drying fans. The application of these technologies not only improves the performance of drying fans, but also makes them more intelligent and user-friendly. They can automatically adjust according to different needs, bringing users a better user experience, such as standard outer rotor fans. The emergence of standard outer rotor fans has improved the drying efficiency to a certain extent and reduced the health risks such as water stains and bacterial growth on tableware.

[0004] However, the outer rotor fans currently in use have a single air outlet, and the air outlet is concentrated at a single position, which results in hot air being blown out only from one fixed direction, and the wind force is unevenly distributed, making it difficult to achieve uniform drying of the tableware, resulting in poor drying effect. In addition, the standard outer rotor fans cannot have electric heating tubes installed inside the fans, and electric heating tubes need to be installed on the drying equipment separately. The structure is not compact enough, which not only affects the appearance and safety of the equipment, but also affects the drying efficiency. On the other hand, the motor of the outer rotor fan is arranged inside the fan. Since the drying temperature is between 80 and 100 degrees, the ambient temperature of the drying equipment is relatively high, and the motor is in the circulation section of high-temperature gas for a long time, and the fan is prone to malfunction. In addition, the current outer rotor fans are carbon steel spray-coated, which is prone to rust, which not only reduces the service life of the fan, but also makes it difficult for users to clean.

[0005] There is no effective solution to the problems in the related art such as uneven drying of a single air outlet, the motor being located in the high-temperature gas fluid position inside the fan and prone to failure, and the fan being prone to rust. Utility Model Content

[0006] The purpose of the utility model is to provide a double-outlet drying fan in view of the deficiencies in the prior art, so as to solve the problems existing in the related art such as uneven drying at a single air outlet, the motor being located at a high-temperature gas fluid position inside the fan and prone to malfunction, and the fan being prone to rust.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] Provided is a double-outlet drying fan, comprising:

[0009] A volute unit, the cross section of which is square and is used to guide airflow and increase wind pressure;

[0010] an impeller unit, the impeller unit being arranged inside the volute unit and used for forming an airflow;

[0011] a driving unit, the driving unit being disposed at the second end of the volute unit and connected to the impeller unit, and being used for driving the impeller unit to rotate;

[0012] a heating unit, the heating unit being arranged inside the volute unit and outside the impeller unit, and being used for heating the airflow generated by the impeller unit;

[0013] Two air outlet units are symmetrically arranged at the first end of the volute unit and are used to discharge the gas heated by the heating unit inside the volute unit to dry the object.

[0014] In some of the embodiments, the volute unit comprises:

[0015] A volute element, wherein the cross section of the volute element is square, the impeller unit and the heating unit are arranged inside the volute element, the two air outlet units are arranged at the first end of the volute element, and the driving unit is arranged at the second end of the volute element;

[0016] an air inlet element, the air inlet element being arranged on the volute element and being in communication with the impeller unit for taking in air;

[0017] a first mounting element, the first mounting element being disposed at the second end of the volute element and being used for mounting the drive unit;

[0018] A plurality of second mounting elements, which are arranged on the side of the volute element and are used to mount the heating unit;

[0019] A plurality of third mounting elements are symmetrically arranged at the first end of the volute element and are used for mounting the two air outlet units.

[0020] In some of the embodiments, the volute unit further comprises:

[0021] A cover plate element is disposed at a first end of the volute element and connected to the volute element to form a closed space with the impeller unit.

[0022] In some of the embodiments, the impeller unit comprises:

[0023] a shaft disc element, the shaft disc element being arranged at the second end of the volute unit and connected to the driving unit, and being used for rotating under the action of the driving unit;

[0024] A middle disk element, which is disposed inside the volute unit and connected to the shaft disk element for transmitting torque;

[0025] A plurality of blade elements, which are arranged around the middle disk element and are used to rotate under the action of the middle disk element to form an airflow;

[0026] A wheel cover element is connected to a plurality of the blade elements respectively.

[0027] In some embodiments, the driving unit includes:

[0028] an outer rotor motor element, the outer rotor motor element being disposed at the second end of the volute unit and connected to the impeller unit to drive the impeller unit to rotate;

[0029] A housing element is arranged outside the outer rotor motor element and is used to protect the outer rotor motor element.

[0030] In some of the embodiments, the driving unit further comprises:

[0031] A plurality of heat dissipation elements are arranged on the housing element for heat dissipation.

[0032] In some of the embodiments, the driving unit further comprises:

[0033] A fourth mounting element is disposed at the first end of the housing element and connected to the volute unit for stabilizing the housing element to the volute unit.

[0034] In some embodiments, the heating unit comprises:

[0035] A plurality of heating elements are arranged inside the volute unit and outside the impeller unit, and are used to heat the airflow formed by the impeller unit.

[0036] In some embodiments, the air outlet unit includes:

[0037] An air outlet element is symmetrically arranged at the first end of the volute unit and is connected to the volute unit, and is used to output the gas heated by the heating unit.

[0038] In some of the embodiments, it also includes:

[0039] Two guide units are respectively arranged inside the corresponding air outlet units for guiding air.

[0040] In some embodiments, the flow guiding unit comprises:

[0041] A plurality of flow guiding elements, wherein the plurality of flow guiding elements are distributed inside the air outlet unit and are used for guiding flow:

[0042] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0043] The utility model discloses a double-outlet drying fan, in which a volute unit is arranged in a square structure, and an impeller unit and a heating unit are arranged inside the volute unit. The heating unit can directly heat the airflow generated by the impeller unit, and the heat is not easily lost, the structure is more compact and reasonable, and the heating efficiency of the airflow is improved; and by arranging the driving unit outside the volute unit, the driving unit is avoided from being located in the flow section of the high-temperature gas, thereby reducing the risk of damage to the driving unit, and solving the problem that the motor is located at the high-temperature gas fluid position inside the fan and is prone to malfunction; at the same time, two air outlet units are arranged, which not only improves the air outlet efficiency, but also makes the air outlet more uniform, solving the problem of uneven drying at a single air outlet; and stainless steel is used to solve the problem of easy rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic diagram of a double-outlet drying fan according to an embodiment of the utility model;

[0045] Figure 2 is a schematic diagram of a volute unit according to an embodiment of the utility model (I);

[0046] Figure 3 is a schematic diagram of a volute unit according to an embodiment of the utility model (II);

[0047] Figure 4 is a schematic diagram of an impeller unit according to an embodiment of the utility model;

[0048] Figure 5 is a schematic diagram of a drive unit according to an embodiment of the utility model (I);

[0049] Figure 6 is a schematic diagram of a heating unit according to an embodiment of the utility model;

[0050] Figure 7 is a schematic diagram of an air outlet unit according to an embodiment of the utility model;

[0051] Figure 8 is a schematic diagram of a drive unit according to an embodiment of the utility model (II);

[0052] Fig. 9 is a schematic diagram of a drive unit according to an embodiment of the utility model (III);

[0053] Fig.10 It is a schematic diagram of a flow guide unit according to an embodiment of the utility model.

[0054] The accompanying drawings are denoted as follows:

[0055] 100, volute unit; 110, volute element; 120, air inlet element; 130, first mounting element; 140, second mounting element; 150, third mounting element; 160, cover element;

[0056] 200, impeller unit; 210, shaft disk element; 220, middle disk element; 230, blade element; 240, wheel cover element;

[0057] 300, driving unit; 310, outer rotor motor element; 320, housing element; 330, heat dissipation element; 340, fourth mounting element;

[0058] 400, heating unit; 410, heating element;

[0059] 500, air outlet unit; 510, air outlet element;

[0060] 600, flow guiding unit; 610, flow guiding element. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0062] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0063] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0064] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0065] Example 1

[0066] An illustrative embodiment of the present utility model is as follows: Figure 1As shown, a double-outlet drying fan comprises a volute unit 100, an impeller unit 200, a driving unit 300, a heating unit 400 and two air outlet units 500. The cross section of the volute unit 100 is square, which is used to guide the airflow and increase the wind pressure; the impeller unit 200 is arranged inside the volute unit 100, which is used to form the airflow; the driving unit 300 is arranged at the second end of the volute unit 100 and connected with the impeller unit 200, which is used to drive the impeller unit 200 to rotate; the heating unit 400 is arranged inside the volute unit 100 and outside the impeller unit 200, which is used to heat the airflow generated by the impeller unit 200; the two air outlet units 500 are symmetrically arranged at the first end of the volute unit 100, which are used to discharge the gas heated by the heating unit 400 inside the volute unit 100 to dry the object.

[0067] like Figure 2 As shown, the volute unit 100 includes a volute element 110, an air inlet element 120, a first mounting element 130, a plurality of second mounting elements 140 and a third mounting element 150. The cross section of the volute element 110 is square, an impeller unit 200 and a heating unit 400 are arranged inside the volute element 110, two air outlet units 500 are arranged at the first end of the volute element 110, and a driving unit 300 is arranged at the second end of the volute element 110; the air inlet element 120 is arranged at the volute element 110 and communicated with the impeller unit 200 for air intake; the first mounting element 130 is arranged at the second end of the volute element 110 for mounting the driving unit 300; a plurality of second mounting elements 140 are arranged at the side of the volute element 110 for mounting the heating unit 400; the third mounting element 150 is symmetrically arranged at the first end of the volute element 110 and located on both sides of the third mounting element 150 for mounting the air outlet unit 500.

[0068] In some embodiments, the volute element 110 is made of stainless steel, including but not limited to 304 stainless steel.

[0069] In some of the embodiments, the volute element 110 is square in shape.

[0070] The size of the air inlet element 120 matches the size of the volute element 110. Generally, the radial size (such as outer diameter, length, width) of the air inlet element 120 is smaller than the radial size (such as length, width) of the volute element 110.

[0071] In some of the embodiments, the air inlet element 120 is disposed at the first end of the volute element 110 .

[0072] In some embodiments, the cross-sectional shape of the air inlet element 120 includes but is not limited to a circle or a square.

[0073] In some of the embodiments, the air inlet element 120 is an air inlet.

[0074] The first mounting element 130 is disposed at a central portion of the second end of the volute element 110 .

[0075] The size of the first mounting element 130 matches the size of the volute element 110. Generally, the radial size (eg, outer diameter) of the first mounting element 130 is smaller than the radial size (eg, length, width) of the second end of the volute element 110.

[0076] In some embodiments, the first mounting element 130 is a first mounting hole.

[0077] The size of the second mounting element 140 matches the size of the volute element 110. Generally, the radial size (eg, outer diameter) of the second mounting element 140 is smaller than the radial size (eg, length, width) of the side of the volute element 110.

[0078] A plurality of second mounting elements 140 are symmetrically disposed on the sides of the volute element 110 .

[0079] In some embodiments, there are two second mounting elements 140 , and the two second mounting elements 140 are symmetrically disposed on the sides of the volute element 110 and close to the two side edges of the volute element 110 .

[0080] In some embodiments, the second mounting element 140 is a second mounting hole.

[0081] In some of the embodiments, a plurality of third mounting elements 150 are symmetrically disposed on both sides of the air inlet element 120 .

[0082] The size of the third mounting element 150 matches the size of the volute element 110 and the air inlet element 120. Generally, the width of the third mounting element 150 is smaller than the difference between the radial dimension (such as length and width) of the first end of the volute element 110 and the radial dimension (such as outer diameter) of the air inlet element 120, and the length of the third mounting element 150 is smaller than the length and width of the first end of the volute element 110.

[0083] In some embodiments, there are two third mounting elements 150 , and the two third mounting elements 150 are symmetrically disposed on both sides of the air inlet element 120 .

[0084] In some embodiments, the third mounting element 150 is a third mounting hole.

[0085] Furthermore, if Figure 3As shown, the volute unit 100 further includes a cover plate element 160 . The cover plate element 160 is disposed at a first end of the volute element 110 and connected to the volute element 110 to form a closed space with the impeller unit 200 .

[0086] The connection between the cover element 160 and the volute element 110 is a detachable connection, wherein the detachable connection includes but is not limited to screw connection and clamping.

[0087] The size of the cover plate element 160 matches the size of the volute element 110. Generally, the radial size (eg, outer diameter) of the cover plate element 160 is smaller than the radial size (eg, length, width) of the volute element 110.

[0088] The size of the cover element 160 matches the size of the air inlet element 120. Generally, the radial size (such as the outer diameter) of the first end of the cover element 160 is not less than the radial size (such as the inner diameter) of the air inlet element 120, and the radial size (such as the outer diameter) of the second end of the cover element 160 is less than the radial size (such as the inner diameter) of the air inlet element 120.

[0089] In some embodiments, the cover element 160 is made of metal, including but not limited to stainless steel.

[0090] In some of the embodiments, the cover element 160 is a gland.

[0091] like Figure 4 As shown, the impeller unit 200 includes a shaft disc element 210, a middle disc element 220, a plurality of blade elements 230 and a wheel cover element 240. The shaft disc element 210 is disposed at the second end of the volute unit 100 and connected to the driving unit 300, and is used to rotate under the action of the driving unit 300; the middle disc element 220 is disposed inside the volute element 110 and connected to the shaft disc element 210, and is used to transmit torque; a plurality of blade elements 230 are disposed around the middle disc element 220, and are used to rotate under the action of the middle disc element 220 to form an airflow; and the wheel cover element 240 is respectively connected to the plurality of blade elements 230.

[0092] Specifically, the shaft disc element 210 is disposed at the second end of the volute element 110 ; and the middle disc element 220 is disposed inside the volute element 110 .

[0093] More specifically, the wheel cover element 240 is detachably connected to the cover plate element 160 .

[0094] The size of the shaft disc element 210 matches the size of the volute element 110. Generally, the radial size (such as outer diameter) of the shaft disc element 210 is smaller than the radial size (such as length and width) of the volute element 110, and the height of the shaft disc element 210 is smaller than the height of the volute element 110.

[0095] The size of the shaft disc element 210 matches the size of the first mounting element 130. Generally, the radial size (eg, outer diameter) of the shaft disc element 210 is not greater than the radial size (eg, inner diameter) of the second mounting element 140.

[0096] In some embodiments, the shaft disc element 210 is made of metal, including but not limited to stainless steel, carbon steel, and alloy steel.

[0097] In some of the embodiments, the hub element 210 is a hub.

[0098] The connection between the middle disk element 220 and the shaft disk element 210 is a detachable connection, wherein the detachable connection includes but is not limited to screw connection and clamping.

[0099] The size of the middle disc element 220 matches the size of the volute element 110. Generally, the radial size (such as the outer diameter) of the middle disc element 220 is smaller than the radial size (such as the length, width) of the second end of the volute element 110.

[0100] The size of the middle disk element 220 matches the size of the shaft disk element 210. Generally, the radial size (such as the outer diameter) of the middle disk element 220 is greater than the radial size (such as the outer diameter) of the shaft disk element 210.

[0101] In some embodiments, the cross-section of the middle plate element 220 is circular.

[0102] In some embodiments, the middle plate element 220 is made of metal, including but not limited to stainless steel.

[0103] The plurality of blade elements 230 are evenly distributed along the circumference of the middle disk element 220 .

[0104] The blade element 230 and the middle plate element 220 are connected in a fixed connection or a detachable connection. The fixed connection includes but is not limited to integral molding; the detachable connection includes but is not limited to screw connection.

[0105] In some embodiments, the blade element 230 is made of metal, including but not limited to stainless steel.

[0106] In some of these embodiments, blade element 230 is a blade.

[0107] The wheel cover element 240 and the blade element 230 are connected in a detachable manner, wherein the detachable connection manner includes but is not limited to screw connection.

[0108] The size of the wheel cover element 240 matches the size of the blade element 230. Generally, the radial size (such as the outer diameter) of the wheel cover element 240 is not less than the radial size (such as the outer diameter) of the circle surrounded by the blade element 230.

[0109] The size of the wheel cover element 240 matches the size of the air inlet element 120. Generally, the radial size (such as the outer diameter) of the wheel cover element 240 is greater than the radial size (such as the inner diameter) of the air inlet element 120.

[0110] The size of the wheel cover element 240 matches the size of the cover plate element 160. Generally, the radial size (such as the outer diameter) of the wheel cover element 240 is greater than the radial size (such as the inner diameter) of the air inlet element 120.

[0111] In some embodiments, the wheel cover element 240 is made of metal, including but not limited to stainless steel.

[0112] In some of the embodiments, the wheel cover element 240 is a wheel cover.

[0113] like Figure 5 As shown, the driving unit 300 includes an outer rotor motor element 310 and a housing element 320. The outer rotor motor element 310 is disposed at the second end of the volute unit 100 and connected to the impeller unit 200 to drive the impeller unit 200 to rotate; the housing element 320 is disposed outside the outer rotor motor element 310 to protect the outer rotor motor element 310.

[0114] Specifically, the outer rotor motor element 310 is disposed at the second end of the volute element 110 and connected to the shaft disk element 210 to drive the middle disk element 220 to drive the blades to rotate; the outer shell element 320 is connected to the volute element 110 .

[0115] The outer rotor motor element 310 is connected to the shaft disk element 210 in a rotational connection.

[0116] The size of the outer rotor motor element 310 matches the size of the first mounting element 130 . Generally, the radial size (eg, outer diameter) of the first end of the outer rotor motor element 310 is smaller than the radial size (eg, inner diameter) of the first mounting element 130 .

[0117] In some of the embodiments, the outer rotor motor element 310 is an outer rotor motor.

[0118] The housing element 320 and the outer rotor motor element 310 are connected in a detachable manner, wherein the detachable connection manner includes but is not limited to a snap connection and a screw connection.

[0119] The housing element 320 and the volute element 110 are connected in a detachable manner, wherein the detachable connection manner includes but is not limited to screw connection.

[0120] The size of the housing element 320 matches the size of the outer rotor motor element 310. Generally, the radial size (such as the outer diameter) of the housing element 320 is larger than the radial size (such as the outer diameter) of the outer rotor connecting element, and the axial size (such as the length) of the housing element 320 is larger than the axial size (such as the length) of the outer rotor motor element 310.

[0121] The size of the housing element 320 matches the size of the volute element 110. Generally, the radial size (eg, outer diameter) of the housing element 320 is smaller than the radial size (eg, length, width) of the volute element 110.

[0122] The size of the housing element 320 matches the size of the first mounting element 130. Generally, the radial size (eg, outer diameter, length, width) of the housing element 320 is greater than the radial size (eg, inner diameter) of the first mounting element 130.

[0123] In some embodiments, the housing element 320 is made of metal, including but not limited to stainless steel.

[0124] In some of the embodiments, the housing element 320 is a protective shell.

[0125] like Figure 6 As shown, the heating unit 400 includes a plurality of heating elements 410. The plurality of heating elements 410 are disposed inside the volute unit 100 and outside the impeller unit 200, and are used to heat the airflow formed by the impeller unit 200.

[0126] Specifically, a plurality of heating elements 410 are disposed inside the volute element 110 and connected to corresponding second mounting elements 140 , so as to heat the airflow formed by the plurality of blade elements 230 .

[0127] The heating element 410 is connected to the volute element 110 in a detachable manner, wherein the detachable connection manner includes but is not limited to a screw connection.

[0128] The size of the heating element 410 matches the size of the second mounting element 140. Generally, the radial size (eg, outer diameter, length, width) of the heating element 410 is smaller than the radial size (eg, outer diameter, length, width) of the second mounting element 140.

[0129] The size of the heating element 410 matches the size of the volute element 110 and the middle disk element 220. Generally, the radial size (such as the outer diameter) of the heating element 410 is smaller than the distance from the middle disk element 220 to the side of the volute element 110 it is close to, and the length of the heating element 410 is smaller than the length of the volute element 110.

[0130] The number of heating elements 410 matches the number of second mounting elements 140. Generally, the number of heating elements 410 is equal to the number of second mounting elements 140.

[0131] In some embodiments, the heating element 410 is a heating tube.

[0132] like Figure 7 As shown, the air outlet unit 500 includes an air outlet element 510. The air outlet element 510 is symmetrically arranged at the first end of the volute unit 100 and communicated with the volute unit 100, and is used to output the gas heated by the heating unit 400.

[0133] Specifically, the air outlet element 510 is connected to the third installation element 150 and communicates with the volute element 110 for outputting the gas heated by the heating element 410 .

[0134] The air outlet element 510 and the volute element 110 are connected in a detachable manner, wherein the detachable connection manner includes but is not limited to screw connection.

[0135] The size of the air outlet element 510 matches the size of the third installation element 150. Generally, the radial size (such as length and width) of the air outlet element 510 is not less than the radial size (such as length and width) of the third installation element 150.

[0136] The size of the air outlet element 510 matches the size of the volute element 110. Generally, the width of the air outlet element 510 is smaller than the distance between the air inlet element 120 and the side of the volute element 110 to which it is close, and the length of the air outlet element 510 is smaller than the length and width of the second end of the volute element 110.

[0137] In some embodiments, the air outlet element 510 is made of metal, including but not limited to stainless steel.

[0138] In some embodiments, the air outlet element 510 is an air outlet.

[0139] The use of the utility model:

[0140] When in use, the outer rotor motor element 310 drives the shaft disk element 210, the blade element 230, and the wheel cover element 240 to rotate, and the air enters the interior of the volute element 110 from the air inlet element 120, and generates airflow inside the volute element 110 through the rotation of the blade element 230. The heating element 410 heats the airflow to form hot air, which is then discharged from the volute element 110 through a plurality of second installation elements 140, a plurality of third installation elements 150, and an air outlet element 510 to dry the items.

[0141] The technical effects of the utility model are as follows:

[0142] The volute unit is set to a square structure, and the impeller unit and the heating unit are set inside the volute unit. The heating unit can directly heat the airflow generated by the impeller unit, and the heat is not easy to lose. The structure is more compact and reasonable, and the heating efficiency of the airflow is improved; and by arranging the drive unit outside the volute unit, the drive unit is avoided from being located in the flow section of the high-temperature gas, reducing the risk of damage to the drive unit, and solving the problem that the motor is located in the high-temperature gas fluid position inside the fan and is prone to failure; at the same time, two air outlet units are set, which not only improves the air outlet efficiency, but also makes the air outlet more uniform, solving the problem of uneven drying of a single air outlet; stainless steel is used to solve the problem of easy rust.

[0143] Example 2

[0144] This embodiment is a variation of Embodiment 1.

[0145] like Figure 8 As shown, the driving unit 300 further includes a plurality of heat dissipation elements 330. The plurality of heat dissipation elements 330 are disposed on the housing element 320 for heat dissipation.

[0146] In some of the embodiments, a plurality of heat dissipation components 330 are disposed around the housing component 320 with the housing component 320 as the center.

[0147] The size of the heat dissipation element 330 matches the size of the housing element 320. Generally, the radial size (such as the outer diameter) of the heat dissipation element 330 is smaller than the radial size (such as the outer diameter, length, width) of the housing element 320.

[0148] In some embodiments, the heat dissipation element 330 is a heat dissipation hole.

[0149] The technical effects of this embodiment are as follows:

[0150] By providing a heat dissipation element, the outer rotor motor element can be cooled in time to keep the working environment temperature of the outer rotor motor element not too high, thereby ensuring that the outer rotor motor element can operate continuously and stably.

[0151] Example 3

[0152] This embodiment is a variation of Embodiment 1 to Embodiment 2.

[0153] like Fig. 9 As shown, the drive unit 300 further includes a fourth mounting element 340 . The fourth mounting element 340 is disposed at a first end of the housing element 320 and connected to the volute unit 100 , and is used to stabilize the housing element 320 to the volute unit 100 .

[0154] The fourth mounting element 340 is connected to the volute element 110 in a detachable manner, wherein the detachable connection manner includes but is not limited to screw connection.

[0155] The fourth installation element 340 is connected to the housing element 320 in a fixed connection or a detachable connection. The fixed connection includes but is not limited to integral molding and welding; the detachable connection includes but is not limited to screw connection.

[0156] The size of the fourth mounting element 340 matches the size of the fourth mounting element 340. Generally, the radial size (eg, length, width) of the fourth mounting element 340 is greater than the radial size (eg, outer diameter) of the first mounting element 130.

[0157] The size of the fourth mounting element 340 matches the size of the housing element 320. Generally, the radial size (eg, outer diameter) of the fourth mounting element 340 is greater than the radial size (eg, outer diameter, length, width) of the housing element 320.

[0158] In some embodiments, the fourth mounting element 340 is made of metal, including but not limited to stainless steel.

[0159] In some of the embodiments, the fourth mounting element 340 is a fixing plate.

[0160] The method of using this embodiment is as follows:

[0161] During installation, the housing element 320 may be connected to the fourth installation element 340 , and then the fourth installation element 340 may be connected to the volute element 110 .

[0162] The technical effects of this embodiment are as follows:

[0163] By providing the fourth mounting element, the housing element can be stably fixed to the volute element, the force-bearing area can be increased, and installation near the first mounting element can be avoided, so that the housing element can be fixed more stably.

[0164] Example 4

[0165] This embodiment is a variation of Embodiments 1 to 3.

[0166] like Fig.10 As shown, the double-outlet drying fan further includes two air guide units 600. The two air guide units 600 are respectively arranged inside the corresponding air outlet units 500 for air guide.

[0167] like Fig.10 As shown, the air guiding unit 600 includes a plurality of air guiding elements 610. The plurality of air guiding elements 610 are distributed inside the air outlet unit 500 for guiding air.

[0168] Specifically, a plurality of air guiding elements 610 are disposed inside the air outlet element 510 .

[0169] The connection between the air guide element 610 and the air outlet element 510 is a detachable connection, wherein the detachable connection includes but is not limited to a snap connection.

[0170] In some of the embodiments, the inclination angle of the flow guiding element 610 is adjustable.

[0171] In some of the embodiments, the inclination angles of the plurality of air guide elements 610 are gradually increased from the middle of the air outlet element 510 to the two sides of the air outlet element 510 .

[0172] The size of the air guide element 610 matches the size of the air outlet element 510. Generally, the width of the air guide element 610 is smaller than the width of the air outlet element 510, and the length of the air guide element 610 is smaller than the height of the air outlet element 510.

[0173] In some of the embodiments, the guide element 610 is made of metal, including but not limited to stainless steel.

[0174] In some of the embodiments, the guide element 610 is configured to be in the shape of an arc.

[0175] In some of the embodiments, the guide element 610 is a guide plate.

[0176] The technical effects of this embodiment are as follows:

[0177] By setting up a guide unit, the direction of the airflow discharged from the air outlet unit can be dispersed, ensuring the air outlet efficiency while avoiding turbulence, making the air outlet unit discharge air evenly, and solving the problem of uneven drying.

[0178] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-outlet drying fan, characterized in that: include: A volute unit, the cross section of which is square and is used to guide airflow and increase wind pressure; an impeller unit, the impeller unit being arranged inside the volute unit and used for forming an airflow; a driving unit, the driving unit being disposed at the second end of the volute unit and connected to the impeller unit, and being used for driving the impeller unit to rotate; a heating unit, the heating unit being arranged inside the volute unit and outside the impeller unit, and being used for heating the airflow generated by the impeller unit; Two air outlet units are symmetrically arranged at the first end of the volute unit and are used to discharge the gas heated by the heating unit inside the volute unit to dry the object.

2. The double-outlet drying fan according to claim 1, characterized in that: The volute unit comprises: A volute element, wherein the cross section of the volute element is square, the impeller unit and the heating unit are arranged inside the volute element, the two air outlet units are arranged at the first end of the volute element, and the driving unit is arranged at the second end of the volute element; an air inlet element, the air inlet element being arranged on the volute element and being in communication with the impeller unit for taking in air; a first mounting element, the first mounting element being disposed at the second end of the volute element and being used for mounting the drive unit; A plurality of second mounting elements, which are arranged on the side of the volute element and are used to mount the heating unit; A plurality of third mounting elements are symmetrically arranged at the first end of the volute element and are used for mounting the two air outlet units.

3. The double-outlet drying fan according to claim 2, characterized in that: The volute unit also includes: A cover plate element is disposed at a first end of the volute element and connected to the volute element to form a closed space with the impeller unit.

4. The double-outlet drying fan according to claim 1, characterized in that: The impeller unit comprises: a shaft disc element, the shaft disc element being arranged at the second end of the volute unit and connected to the driving unit, and being used for rotating under the action of the driving unit; A middle disk element, which is disposed inside the volute unit and connected to the shaft disk element for transmitting torque; A plurality of blade elements, which are arranged around the middle disk element and are used to rotate under the action of the middle disk element to form an airflow; A wheel cover element is connected to a plurality of the blade elements respectively.

5. The double-outlet drying fan according to claim 1, characterized in that: The driving unit comprises: an outer rotor motor element, the outer rotor motor element being disposed at the second end of the volute unit and connected to the impeller unit to drive the impeller unit to rotate; A housing element is arranged outside the outer rotor motor element and is used to protect the outer rotor motor element.

6. The double-outlet drying fan according to claim 5, characterized in that: The driving unit further comprises: a plurality of heat dissipation elements, wherein the plurality of heat dissipation elements are arranged on the housing element for dissipating heat; and / or A fourth mounting element is disposed at the first end of the housing element and connected to the volute unit for stabilizing the housing element to the volute unit.

7. The double-outlet drying fan according to claim 1, characterized in that: The heating unit comprises: A plurality of heating elements are arranged inside the volute unit and outside the impeller unit, and are used to heat the airflow formed by the impeller unit.

8. The double-outlet drying fan according to claim 1, characterized in that: The air outlet unit comprises: An air outlet element is symmetrically arranged at the first end of the volute unit and is connected to the volute unit, and is used to output the gas heated by the heating unit.

9. The double-outlet drying fan according to any one of claims 1 to 8, characterized in that: Also includes: Two guide units are respectively arranged inside the corresponding air outlet units for guiding air.

10. The double-outlet drying fan according to claim 9, characterized in that: The flow guiding unit comprises: A plurality of flow guiding elements are distributed inside the air outlet unit for guiding flow.

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