CN115682081A - Heating device - Google Patents

Abstract

The invention provides a warmer, comprising: a fan assembly; the air pipe is connected with the fan assembly; the heating body, at least part of heating body sets up in the tuber pipe, and the inside of heating body has first wind channel, is formed with the second wind channel between heating body and the tuber pipe, and the fan subassembly can be to first wind channel and second wind channel air supply. According to the invention, through the design of the first air duct and the second air duct, the contact area of the airflow and the heating body is ensured, the self heat dissipation effect of the heating body is ensured, and meanwhile, the heating effect of the heater is greatly improved.

Description

Heating device

Technical Field

The invention relates to the technical field of household appliances, in particular to a warmer.

Background

When the warmer on the market uses the tubular heating body at present, the heat dissipation of the tubular heating body is uneven, the local overheating condition is easy to exist, the heating body is damaged due to overheating or peripheral parts of the heating body are damaged, and the service life of the warmer is short.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, the invention provides a warmer.

The invention provides a warmer, comprising: a fan assembly; the air pipe is connected with the fan assembly; the heating body, the at least part of heating body sets up in the tuber pipe, and the inside of heating body has first wind channel, is formed with the second wind channel between heating body and the tuber pipe, and the fan subassembly can be to first wind channel and second wind channel air supply.

The heater provided by the invention comprises a fan assembly, an air pipe and a heating body. Wherein, the air pipe is connected with the fan component, and at least part of the heating body is arranged inside the air pipe; the inside self of heat-generating body is provided with first wind channel, is formed with the second wind channel after the room heater assembly is accomplished between heat-generating body and the tuber pipe, and first wind channel and second wind channel are linked together with the fan subassembly simultaneously. In the working process of the warmer, the heating body can generate heat when working, the fan can simultaneously supply air to the first air channel and the second air channel when in operation, and then the heat generated by the heating body is taken out of the warmer, so that the warming purpose is achieved.

Particularly, a first air duct is arranged inside the heating body, and a second air duct is formed between the outside of the heating body and the air duct. Like this can be simultaneously to first wind channel and second wind channel air supply when fan assembly moves to the heat will be taken away from the inside and the outside of heat-generating body simultaneously, promote the area of contact of air current with the heat-generating body in the very big degree, guaranteed the radiating effect of air current to the heat-generating body on the one hand, avoid the heat-generating body local overheat, on the other hand has guaranteed the calorific value that the room heater air current was taken away, with the heating effect of guaranteeing the room heater.

Therefore, through the design of the first air duct and the second air duct, the invention ensures the contact area of the airflow and the heating element, ensures the self heat dissipation effect of the heating element and greatly improves the heating effect of the warmer.

The warmer according to the above technical scheme of the present invention may further have the following additional technical features:

in the above technical scheme, the heating body is a heating tube; the first air duct is positioned at the inner side of the heating tube; the second air duct is located on the periphery of the heating tube.

In the technical scheme, the heating body is a heating tube. Wherein, the interior of the heating tube is hollow to form a first air duct; the heating tube is arranged in the air pipe, and a gap is reserved between the heating tube and the air pipe, so that a second air channel is formed between the outer wall of the heating tube and the inner wall of the air pipe. Like this, in the room heater motion process, the pipe wall of heating tube can produce the heat, and the fan subassembly operation can be simultaneously to the inside air supply in first wind channel and second wind channel, and then has guaranteed that the air current contacts with the inner wall and the outer wall of heating tube simultaneously to take away the heat that the heating tube produced, guaranteed the radiating effect of heating tube on the one hand, promoted the heating effect of room heater simultaneously to a very big degree.

In any of the above technical schemes, the central axis of the heating tube coincides with the central axis of the air pipe.

In the technical scheme, the central axis of the heating tube is coincident with the central axis of the air pipe. Thus, the second air channels are uniformly distributed on the peripheral sides of the heating tubes. That is, guaranteed that the second wind channel has the same size in the footpath of heating tube, guaranteed that the air current that fan assembly produced is at the periphery evenly distributed of heating tube. Like this, in the room heater operation in-process, some air current that the fan subassembly produced enters into the second wind channel, and the second wind channel radially has the same size at the heating tube, has guaranteed that the periphery of heating tube has the air current of the same flow to guaranteed that the second wind channel is at the even radiating effect of week side of heating tube, avoid the local overheated condition of heating tube to take place.

In any of the above technical solutions, the central axis of the heating tube coincides with the central axis of the fan assembly

In this technical scheme, the central axis of heating tube and the central axis coincidence of fan subassembly. Therefore, the first air channel is ensured to correspond to the center of the fan assembly, and the distances from different positions in the circumferential direction of the second air channel to the center of the fan assembly are ensured to be equal. In the operation process of the fan assembly, the air flow strength of the center of the fan assembly is high, and the air flow strength is gradually reduced towards the periphery. Therefore, the distances from different positions in the circumferential direction of the second air duct to the center of the fan assembly are equal, the air flow can uniformly enter the second air duct, and the uniformity of the air flow in the second air duct is further ensured.

In any of the above technical solutions, a ratio of the length to the diameter of the heating tube is greater than or equal to 1 and less than or equal to 50.

In the technical scheme, the length of the heating tube is larger than the diameter of the heating tube, and the ratio of the length of the heating tube to the diameter of the heating tube is more than or equal to 1 and less than 50. Particularly, the overall coordination of the heating tube is ensured by limiting the ratio of the length to the diameter of the heating tube, and the size of the first air channel is ensured to ensure the heat dissipation effect of the first air channel on the heating tube; more importantly, the length of the heating tube is larger than the diameter of the heating tube, so that the sufficient heating distance between the air flow in the first air channel and the air flow in the second air channel in the flowing process is ensured, and the temperature of the air flow blown out of the heater is ensured.

In any of the above technical solutions, the thickness of the heating tube is greater than or equal to 0.1mm.

In the technical scheme, the thickness of the heating tube is more than or equal to 0.1mm. On the one hand, the structural strength of the heating tube is ensured, and on the other hand, the heating efficiency of the heating tube is ensured.

In any of the above technical solutions, the heating power density of the heating element is less than or equal to 50w/cm ² 。

In the technical scheme, the heating power density of the heating element is less than or equal to 50w/cm ² . Therefore, the heating power density of the heating body is reasonably designed, the temperature of the air flow provided by the heater can be ensured to be appropriate, and the condition that the temperature is too high or too low is avoided.

In any of the above technical solutions, the heating surface of the heating element faces the first air duct and/or the second air duct.

In the technical scheme, the heating body can heat on one side or two sides. That is, the heating surface of the heating body can directly supply heat to the first air channel, can also directly supply heat to the second air channel, and can also simultaneously supply heat to the first air channel and the second air channel. Specifically, when the heating body supplies heat towards the first air duct and the second air duct at the same time, the air flow in the first air duct and the air flow in the second air duct can be directly heated; when the heating surface of the heating body faces one of the first air channel and the second air channel, the other end of the heating body also has a certain temperature under the action of heat conduction, and then the airflow in the other one of the first air channel and the second air channel is heated.

In any of the above technical solutions, the air duct and the heating element are cut by a plane perpendicular to a central axis of the air duct, and a ratio of a cross-sectional area of the second air duct to a cross-sectional area of the first air duct is greater than or equal to 1 and less than or equal to 10.

In this technical solution, the heat generated by the heat generating body toward the inside is different from the heat generated toward the outside during operation, and the heat generated by the heat generating body toward the inside is generally smaller than the heat generated toward the outside. Therefore, the invention optimizes the sizes of the first air duct and the second air duct, and ensures that the ratio of the cross-sectional area of the second air duct to the cross-sectional area of the first air duct is more than or equal to 1 and less than or equal to 10 when the air duct and the heating body are cut by a plane perpendicular to the central axis of the air duct.

Therefore, the airflow generated by the operation of the fan assembly can be divided into two parts, one part of the airflow enters the first air channel, the other part of the airflow enters the second air channel, and the amount of the gas entering the second air channel is larger than the amount of the gas entering the first air channel, so that the distribution of the gas is matched with the distribution of the heat generated by the heating body, and the heat is uniformly radiated inside and outside the heating body.

In any one of the above technical solutions, the fan assembly includes: the air pipe is connected with the bracket; the fan is arranged on the bracket.

In this technical scheme, the fan subassembly includes support and fan. Wherein, the air pipe is connected with the bracket and can be connected by adopting viscose glue or buckles and the like; the fan is arranged on the support and can supply air towards the first air duct and the second air duct during operation.

In any of the above technical solutions, the support is provided with an air guide duct, and the inlet end of the first air duct and the inlet end of the second air duct are communicated with the fan through the air guide duct.

In the technical scheme, the support is provided with an air guide duct. The air guide duct is positioned between the fan and the air pipe, the inlet end of the first air duct is communicated with the fan through the air guide duct, and the inlet end of the second air duct is communicated with the fan through the air guide duct. Therefore, in the using process of the warmer, airflow generated by the fan firstly enters the air guide duct, and then simultaneously enters the first air duct and the second air duct under the action of the airflow in the air guide duct, so that heat of the heating body is dissipated on the inner side and the outer side of the heating body.

In any of the above technical solutions, the air guide duct is tapered in the air supply direction of the fan.

In the technical scheme, the air guide duct is in a reduced state in the air supply direction of the fan. That is, the air guide duct is cut out by a plane perpendicular to the central axis of the air guide duct, and the sectional area of the air guide duct is gradually reduced from the inlet end of the air guide duct to the outlet end of the air guide duct, so that the air guide duct is favorable for the flow of air flow and the concentration of the air flow towards the central axis of the air guide duct.

Specifically, when the axial flow fan is adopted as the fan, the peripheral air speed of the axial flow fan is large due to the characteristics of the axial flow fan, the central air speed of the axial flow fan is small, and the air flow passing through the air guide air duct is distributed on the cross section of the vertical air duct very unevenly, so that the heat dissipation of the heating body is uneven. Therefore, the air guide duct is gradually reduced in the air supply direction of the fan, so that the airflow blown out by the fan is gathered towards the central axis of the air guide duct, the airflow distribution on the cross section of the vertical air pipe is uniform, and the heat radiation of the heating body is more uniform.

In any of the above technical solutions, the end of the air guide duct extends to between the heating element and the air duct.

In the technical scheme, the outlet end of the air guide duct extends towards one side of the air pipe and the heating body and extends to the position between the heating body and the air pipe. Like this, the air current that the fan produced enters into the entrance point in first wind channel and the entrance point in second wind channel under the water conservancy diversion effect in wind-guiding wind channel to can guarantee the effect of gathering together of wind-guiding wind channel to the air current, guarantee that the fan produces the air current distribution on the cross section of perpendicular tuber pipe comparatively even, make heat-generating body heat dissipation itself also more even.

In any of the above technical solutions, the side wall of the bracket extends toward one side of the air duct to form an air guide duct.

In the technical scheme, the support and the air guide duct are of an integrated structure. The side wall of the support extends towards one side of the air pipe, so that an air guide duct is formed, and airflow generated by the fan is guided to the first air duct and the second air duct. Particularly, the side walls of the support gradually draw close towards the inside in the extending process to form a gradually-shrinking air guide duct, so that the air flow distribution of the air flow generated by the fan on the cross section of the vertical air pipe is ensured to be uniform, and the heat dissipation of the heating body is ensured to be more uniform.

In any one of the above technical schemes, the support is provided with a mounting groove, and the fan is positioned in the mounting groove.

In this technical scheme, be provided with the mounting groove on the support to set up the fan in the mounting groove, can play the effect of protection fan on the one hand, shelter from the fan simultaneously, the fan under the running state is touched in the user mistake, and on the other hand accessible mounting groove holds the fan, is favorable to realizing the miniaturized design of fan subassembly.

In any of the above technical solutions, a distance between an axial end face of the fan facing the heating element and the heating element is greater than or equal to 5mm.

In the technical scheme, the distance between the axial end face of the fan facing to the heating element and the heating element is more than or equal to 5mm. Therefore, a certain distance is reserved between the fan and the heating body, and the risk of structural interference caused by too short distance between the fan and the heating body is avoided. More importantly, a certain distance is reserved between the fan and the heating body, heat generated by the heating body can be prevented from radiating to the fan, the fan can be prevented from being damaged to a certain extent, and the service life of the fan is prolonged.

In any one of the above technical solutions, the air duct includes: the second air duct is formed between the air guide section and the heating body; the air inlet section is arranged at one end of the air guide section and is connected with the fan assembly; and the air outlet section is arranged at the other end of the air guide section.

In the technical scheme, the air pipe comprises an air inlet section, an air guide section and an air outlet section which are connected. Wherein, the air inlet section is communicated with the fan through an air guide duct; the air guide section is connected between air inlet section and air-out end to the second wind channel is located between the outer wall of air guide section and heat-generating body. Like this, at the room heater working process, the produced air current of fan operation gets into the air inlet section under the water conservancy diversion effect in wind-guiding wind channel, then passes through the wind-guiding section and takes away the produced heat of heat-generating body to finally discharge through the air-out section.

In any of the above technical solutions, the air duct is cut out by a plane perpendicular to a central axis of the air duct, and a cross-sectional area of the air inlet section is larger than a cross-sectional area of the air guide section.

In this technical scheme, with the plane intercepting tuber pipe of the center pin of perpendicular to tuber pipe, the cross sectional area of air inlet section is greater than the cross sectional area of wind-guiding section to guarantee the smooth transition of joint department of air inlet section and wind-guiding section, form big-end-up's structure like this. The opening that is close to the air inlet section of wind-guiding section is great also, and the opening that the wind-guiding section is close to the air-out section is less for the wind-guiding section narrows gradually, when improving the wind speed, the speed and the efficiency of heat transfer between the air current in the increase wind-guiding section and the heat-generating body.

In any of the above technical schemes, the air pipe is intercepted by a plane perpendicular to the central axis of the air pipe, and the cross-sectional area of the air outlet section is larger than that of the air inlet section.

In this technical scheme, the air-out section generally needs to assemble with other parts. Consequently, with the plane intercepting tuber pipe of the center pin of perpendicular to tuber pipe, the cross sectional area of air-out section is greater than the cross sectional area of air inlet section, agrees to increase the size of air-out section, and then needs reserve certain space, the air-out section of being convenient for assembles with other parts.

In any one of the above technical solutions, the warmer further includes: the fan assembly and the air pipe are arranged in the transparent shell; wherein, the tuber pipe is transparent tuber pipe, and the heat-generating body is transparent body.

In the technical scheme, the warmer further comprises a transparent shell, the air pipe is also a transparent air pipe, and the heating body is a transparent pipe body. Wherein, the tuber pipe is established in the outside of heat-generating body, and transparent shell is located the outside of tuber pipe. When the warmer is used by a user, the internal structure of the warmer can be directly observed, particularly the work of the heating element is observed, and a warm visual effect is provided for the user.

In any of the above technical solutions, an electrode is disposed on the heating element; the two ends that the heat-generating body axial is relative are provided with fixed subassembly respectively, and fixed subassembly is connected with the electrode electricity, and fixed subassembly can be used to fixed heat-generating body to for the heat-generating body power supply when getting electricity.

In the technical scheme, the heating body is provided with electrodes, and two ends of the heating body, which are opposite to each other in the axial direction, are respectively provided with a fixing component. Wherein, the fixing component can ensure the installation and fixation of the heating element; and, supply power for the heat-generating body through the fixed subassembly that gets under the electric condition for fixed subassembly has the function of fixed and power supply concurrently, has simplified the structure of fixed subassembly in very big degree, reduces the spare part quantity of fixed subassembly, is favorable to realizing that the structure of fixed subassembly is the simplest, reduces the cost of fixed subassembly simultaneously.

In any of the above technical solutions, the fixing assembly includes: the first fixing piece is arranged at the axial end part of the heating body, is contacted with the electrode and can supply power to the heating body when being electrified; and the first fixing piece is arranged on the second fixing piece.

In the technical scheme, the fixing assembly comprises a first fixing piece and a second fixing piece. The first fixing member is disposed at an axial end of the heating body and contacts with an electrode of the heating body to fix the heating body and supply power to the heating body through the first fixing member. In addition, first mounting is installed at the second mounting, and whole fixed subassembly is connected with exterior structure through the second mounting to guarantee the stable installation of heat-generating body. In addition, according to the fixing assembly provided by the invention, the first fixing piece supplies power to the heating element in an electrified state, and the second fixing piece ensures that the whole heating element is installed on an external structure, so that the fixing assembly has the fixing and power supply effects, the number of parts of the warmer is reduced, the structure of the warmer is simplified to the greatest extent, and the cost of the warmer is reduced.

In any of the above technical solutions, the warmer further comprises a sealant. The sealing glue is arranged at the joint of the support and the air pipe, and the sealing glue is mainly used for ensuring that air flow does not leak when flowing in the air pipe and the support, ensuring that the sealing glue can resist high temperature and being not influenced by heat radiation or hot air of the heating body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a warmer of one embodiment of the present invention;

FIG. 2 is a cross-sectional view of the warmer of FIG. 1;

FIG. 3 is a top plan view of the warmer of FIG. 1;

FIG. 4 is an exploded view of the warmer of FIG. 1;

FIG. 5 is a schematic view of the structure of the bracket in the warmer shown in FIG. 1;

FIG. 6 is a schematic structural view of a fan in the warmer shown in FIG. 1;

FIG. 7 is a schematic view showing a fixed relationship of a heat generating body in the warmer according to one embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of the structure shown in FIG. 7 at A;

fig. 9 is a partial enlarged view of the structure shown in fig. 7 at B.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

102 fan components, 104 air pipes, 106 heating bodies, 108 first air channels, 110 second air channels, 112 supports, 114 fans, 116 air guide air channels, 118 mounting grooves, 120 air guide sections, 122 air inlet sections, 124 air outlet sections, 126 fan blades, 128 screw holes, 130 screw columns, 132 driving parts, 134 electrodes, 136 fixing components, 138 first fixing parts and 140 second fixing parts.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

A warmer provided according to some embodiments of the present invention is described below with reference to fig. 1 to 9. The dotted line in fig. 2 shows the central axis of the heat pipe, and also the central axis of the air pipe 104, and also the central axis of the fan assembly 102, and also the central axis of the fan 114 (since the central axes of the above components are collinear).

As shown in fig. 1, 2, 3 and 4, a first embodiment of the present invention proposes a warmer, comprising: a blower assembly 102, an air duct 104, and a heater 106.

Wherein, the air duct 104 is connected with the blower assembly 102, and at least part of the heating element 106 is arranged inside the air duct 104; the first air channel 108 is arranged in the heating element 106, the second air channel 110 is formed between the heating element 106 and the air pipe 104 after the heater is assembled, and the first air channel 108 and the second air channel 110 are communicated with the fan assembly 102 at the same time. During the operation of the heater, the heating element 106 can generate heat, and the fan 114 can simultaneously supply air into the first air channel 108 and the second air channel 110, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purpose of heating.

Specifically, as shown in fig. 2, the inside of the heat generating body 106 has a first air passage 108, and a second air passage 110 is formed between the outside of the heat generating body 106 and the air duct 104. Therefore, when the fan assembly 102 operates, air can be supplied to the first air duct 108 and the second air duct 110 simultaneously, so that heat can be taken away from the inside and the outside of the heating body 106, the contact area between the airflow and the heating body 106 is greatly increased, on one hand, the heat dissipation effect of the airflow on the heating body 106 is ensured, the local overheating of the heating body 106 is avoided, on the other hand, the heat value taken away by the airflow of the warmer is ensured, and the warming effect of the warmer is ensured. Specifically, the material of the air duct 104 may be any temperature-resistant material.

Therefore, in this embodiment, through the design of the first air duct 108 and the second air duct 110, the contact area between the airflow and the heating element 106 is ensured, the heat dissipation effect of the heating element 106 is ensured, and the heating effect of the heater is greatly improved.

As shown in fig. 1, 2, 3 and 4, a second embodiment of the present invention proposes a warmer, comprising: a fan assembly 102, an air duct 104 and a heating element 106; the heating element 106 is a heating tube.

As shown in fig. 2, the air duct 104 is connected to the blower assembly 102, and the heater 106 is disposed inside the air duct 104; a first air channel 108 is arranged in the heater 106, and a second air channel 110 is formed between the heater 106 and the air pipe 104 after the heater is assembled; the heating element 106 can generate heat when working, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110 when working, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purposes of heat dissipation and heating.

In this embodiment, further, as shown in fig. 2 and 4, the heat generating body 106 is a heat generating tube. Wherein, the interior of the heating tube is hollow to form a first air duct 108; the heat generating pipe is disposed inside the air duct 104, and a space is formed between the heat generating pipe and the air duct 104, so that a second air duct 110 is formed between an outer wall of the heat generating pipe and an inner wall of the air duct 104. Like this, in the room heater motion in-process, the pipe wall of heating tube can produce the heat, and fan subassembly 102 operation can be simultaneously to the inside air supply of first wind channel 108 and second wind channel 110, and then has guaranteed that the air current contacts with the inner wall and the outer wall of heating tube simultaneously to take away the heat that the heating tube produced, guaranteed the radiating effect of heating tube on the one hand, greatly promoted the heating effect of room heater simultaneously to the extent.

In this embodiment, further, as shown in fig. 2, the central axis of the heat generating tube coincides with the central axis of the air duct 104. Thus, the second air ducts 110 are ensured to be uniformly distributed around the heat generating pipes. That is, it is ensured that the second air ducts 110 have the same size in the radial direction of the heat pipes, and that the air flow generated by the fan assembly 102 is uniformly distributed on the outer peripheries of the heat pipes. Thus, in the operation process of the warmer, a part of the airflow generated by the fan assembly 102 enters the second air duct 110, and the second air duct 110 has the same size in the radial direction of the heating tube, so that the periphery of the heating tube is ensured to have the airflow with the same flow rate, the uniform heat dissipation effect of the second air duct 110 on the peripheral side of the heating tube is ensured, and the occurrence of the local overheating condition of the heating tube is avoided.

Further in this embodiment, as shown in FIG. 2, the central axis of the heat pipe coincides with the central axis of the fan assembly 102. In this way, it is ensured that the first air chute 108 corresponds to the center position of the fan assembly 102, while it is ensured that the second air chute 110 is equally distanced from the center of the fan assembly 102 at circumferentially different locations. During operation of the fan assembly 102, the air flow intensity at the center of the fan assembly 102 is relatively high, and the air flow intensity gradually decreases toward the periphery. Therefore, it is ensured that the distances from different positions in the circumferential direction of the second air duct 110 to the center of the fan assembly 102 are equal, that is, it is ensured that the air flow can uniformly enter the second air duct 110, and further, the uniformity of the air flow in the second air duct 110 is ensured.

Specifically, the central axis of the fan assembly 102 is the central axis of the fan 114.

As shown in fig. 1, 2, 3 and 4, a third embodiment of the present invention proposes a warmer, comprising: a fan assembly 102, an air duct 104 and a heating element 106; the heating element 106 is a heating tube.

As shown in fig. 2, the air duct 104 is connected to the blower assembly 102, and the heater 106 is disposed inside the air duct 104; a first air duct 108 is arranged in the heating element 106, and a second air duct 110 is formed between the heating element 106 and the air duct 104 after the heater is assembled; the heat generator 106 can generate heat when operating, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110 when operating, so as to take the heat generated by the heat generator 106 out of the heater, thereby achieving the purposes of heat dissipation and heating.

In this embodiment, further, as shown in fig. 1 and 4, the heat generating body 106 is a heat generating tube. The length of the heating tube is larger than the diameter of the heating tube, and the ratio of the length of the heating tube to the diameter is ensured to be larger than or equal to 1 and smaller than 50. Particularly, the ratio of the length to the diameter of the heating tube is limited, so that the overall coordination of the heating tube is ensured, and the size of the first air duct 108 is ensured to ensure the heat dissipation effect of the first air duct 108 on the heating tube; more importantly, the length of the heating tube is larger than the diameter of the heating tube, so that the air flow in the first air duct 108 and the air flow in the second air duct 110 have a sufficient heating distance in the flowing process, and the temperature of the air flow blown out from the heater is ensured.

In this embodiment, further, the thickness of the heat generating tube is greater than or equal to 0.1mm. On the one hand, the structural strength of the heating tube is ensured, and on the other hand, the heating efficiency of the heating tube is ensured.

In this embodiment, further, the heat generation power density of the heat generating body 106 is 50w/cm or less ² . Therefore, the heating power density of the heating element 106 is reasonably designed, the temperature of the air flow provided by the warmer can be ensured to be appropriate, and the condition that the temperature is too high or too low is avoided.

In this embodiment, the heat generating element 106 may generate heat on one side or both sides. That is, the heating surface of the heating unit 106 can directly supply heat to the first air channel 108, can directly supply heat to the second air channel 110, and can simultaneously supply heat to the first air channel 108 and the second air channel 110. Specifically, when the heating element 106 supplies heat to the first air duct 108 and the second air duct 110 at the same time, the air flow in the first air duct 108 and the second air duct 110 can be directly heated; when the heating surface of the heating element 106 faces one of the first air duct 108 and the second air duct 110, the other end of the heating element 106 also has a certain temperature under the action of heat conduction, thereby heating the air flow in the other one of the first air duct 108 and the second air duct 110.

As shown in fig. 1, 2, 3 and 4, a fourth embodiment of the present invention proposes a warmer, comprising: a blower assembly 102, an air duct 104, and a heater 106.

As shown in fig. 2, the air duct 104 is connected to the blower assembly 102, and the heating element 106 is disposed inside the air duct 104; a first air duct 108 is arranged in the heating element 106, and a second air duct 110 is formed between the heating element 106 and the air duct 104 after the heater is assembled; the heating element 106 can generate heat when working, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110 when working, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purposes of heat dissipation and heating.

In this embodiment, further, the heat generated toward the inside of the heat generating body 106 during operation is different from the heat generated toward the outside, and the heat generated toward the inside of the heat generating body 106 is generally smaller than the heat generated toward the outside. Therefore, as shown in fig. 2, the present invention optimizes the dimensions of the first air path 108 and the second air path 110, and ensures that the ratio of the cross-sectional area of the second air path 110 to the cross-sectional area of the first air path 108 is greater than or equal to 1 and less than or equal to 10 when the air duct 104 and the heat generating body 106 are cut in a plane perpendicular to the central axis of the air duct 104. In this way, the airflow generated by the operation of the fan assembly 102 can be divided into two parts, one part of the airflow enters the first air duct 108, the other part of the airflow enters the second air duct 110, and the amount of the gas entering the second air duct 110 is larger than the amount of the gas entering the first air duct 108, so that the distribution of the gas is matched with the distribution of the heat generated by the heating element 106, and the heat is uniformly dissipated inside and outside the heating element 106.

As shown in fig. 1, 2, 3 and 4, a fifth embodiment of the present invention proposes a warmer, comprising: a fan assembly 102, an air duct 104 and a heating element 106; the fan assembly 102 includes a bracket 112 and a fan 114.

As shown in fig. 2, the air duct 104 is connected to the blower assembly 102, and the heating element 106 is disposed inside the air duct 104; a first air duct 108 is arranged in the heating element 106, and a second air duct 110 is formed between the heating element 106 and the air duct 104 after the heater is assembled; the heating element 106 can generate heat when working, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110 when working, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purposes of heat dissipation and heating.

In this embodiment, further, as shown in fig. 1, 2, and 4, the fan assembly 102 includes a bracket 112 and a fan 114. The air duct 104 is connected to the bracket 112, and can be connected by glue or by a snap fit; the fan 114 is disposed on the bracket 112 and is operable to blow air toward the first air chute 108 and the second air chute 110.

In this embodiment, as shown in fig. 2, the air guiding duct 116 is disposed on the bracket 112. The air guiding duct 116 is located between the fan 114 and the air duct 104, and the inlet end of the first air duct 108 is communicated with the fan 114 through the air guiding duct 116, and the inlet end of the second air duct 110 is communicated with the fan 114 through the air guiding duct 116. Thus, in the use process of the warmer, the airflow generated by the fan 114 firstly enters the air guiding duct 116, and then enters the first air duct 108 and the second air duct 110 simultaneously under the action of the airflow of the air guiding duct 116, so as to radiate heat to the heating element 106 on the inner side and the outer side of the heating element 106.

In this embodiment, as shown in fig. 2, the wind guide duct 116 is reduced in the blowing direction of the fan 114. That is, the air guide duct 116 is cut out by a plane perpendicular to the central axis of the air guide duct 116, and the cross-sectional area of the air guide duct 116 is gradually reduced from the inlet end of the air guide duct 116 to the outlet end of the air guide duct 116, which is favorable for the flow of the air flow and the concentration of the air flow toward the central axis of the air guide duct 116.

In this embodiment, further, specifically, when the axial flow fan 114 is adopted as the fan 114, the characteristic of the axial flow fan 114 itself causes the peripheral air speed to be large and the central air speed to be small, which causes the airflow passing through the air guide duct 116 to be distributed very unevenly on the cross section of the vertical air duct 104, thereby causing uneven heat dissipation of the heat generating body 106 itself. Therefore, as shown in fig. 2, in the present embodiment, the wind guide duct 116 is arranged to taper in the air supply direction of the fan 114, so that the airflow blown out by the fan 114 gathers towards the central axis of the wind guide duct 116, the airflow distribution on the cross section of the vertical air duct 104 is relatively uniform, and the heat dissipation of the heating element 106 is also more uniform.

In this embodiment, as shown in fig. 2, the outlet end of the air guide duct 116 extends toward the air duct 104 and the heat generating element 106, and extends between the heat generating element 106 and the air duct 104. In this way, the airflow generated by the fan 114 enters the inlet end of the first air duct 108 and the inlet end of the second air duct 110 under the guiding action of the air guiding duct 116, and the gathering action of the air guiding duct 116 on the airflow can be ensured, and the airflow generated by the fan 114 on the cross section of the vertical air duct 104 is ensured to be distributed more uniformly, so that the heat dissipation of the heating element 106 is more uniform.

In this embodiment, as shown in fig. 4 and 5, the bracket 112 and the wind guide duct 116 are of an integral structure. The side wall of the bracket 112 extends toward one side of the air duct 104, so as to form an air guiding duct 116, so as to guide the air flow generated by the fan 114 to the first air duct 108 and the second air duct 110. Particularly, the side walls of the support 112 gradually draw close to the inside in the extending process to form a gradually-reduced air guiding duct 116, so as to ensure that the airflow generated by the fan 114 is distributed more uniformly on the cross section of the vertical air duct 104, and ensure that the heat dissipation of the heating element 106 is more uniform.

In this embodiment, as shown in fig. 4, a mounting groove 118 is provided on the bracket 112, and the fan 114 is disposed in the mounting groove 118, so that on one hand, the fan 114 can be protected, and the fan 114 is shielded, so that a user can touch the fan 114 in an operating state by mistake, and on the other hand, the fan 114 can be accommodated in the mounting groove 118, which is beneficial to implementing a miniaturized design of the fan assembly 102.

In this embodiment, further, the distance between the axial end face of the fan 114 on the side facing the heat-generating body 106 and the heat-generating body 106 is 5mm or more. Thus, a certain distance is kept between the fan 114 and the heating element 106, and the risk of structural interference caused by too close distance between the fan 114 and the heating element is avoided. More importantly, a certain distance is reserved between the fan 114 and the heating element 106, so that heat generated by the heating element 106 can be prevented from radiating to the fan 114, the fan 114 can be prevented from being damaged to a certain extent, and the service life of the fan 114 is prolonged.

In this embodiment, further, the warmer further comprises a sealant. The sealant is disposed at the joint of the support 112 and the air pipe 104, and is mainly used to ensure that the air flow does not leak when flowing in the air pipe 104 and the support 112, and meanwhile, the sealant is high temperature resistant and is not affected by the heat radiation or hot air of the heating element 106.

As shown in fig. 1, 2, 3 and 4, a sixth embodiment of the present invention proposes a warmer, comprising: a fan assembly 102, an air duct 104 and a heating element 106; the air duct 104 includes an air inlet section 122, an air guiding section 120 and an air outlet section 124 connected to each other.

As shown in fig. 2, the air duct 104 is connected to the blower assembly 102, and the heating element 106 is disposed inside the air duct 104; a first air duct 108 is arranged in the heating element 106, and a second air duct 110 is formed between the heating element 106 and the air duct 104 after the heater is assembled; the heating element 106 can generate heat when working, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110 when working, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purposes of heat dissipation and heating.

Further, as shown in fig. 2, the air duct 104 includes an air inlet section 122, an air guiding section 120, and an air outlet section 124 connected to each other. Wherein, the air intake section 122 is communicated with the fan 114 through the air guide duct 116; the air guiding section 120 is connected between the air inlet section 122 and the air outlet end, and the second air duct 110 is located between the air guiding section 120 and the outer wall of the heating body 106. Thus, in the working process of the warmer, the airflow generated by the operation of the fan 114 enters the air inlet section 122 under the guiding action of the air guiding duct 116, then passes through the air guiding section 120 and takes away the heat generated by the heating element 106, and finally is discharged through the air outlet section 124.

In this embodiment, as shown in fig. 2, the air duct 104 is cut by a plane perpendicular to the central axis of the air duct 104, the cross-sectional area of the air intake section 122 is larger than that of the air guiding section 120, and the joint of the air intake section 122 and the air guiding section 120 is ensured to be in smooth transition, so as to form a structure with a large front part and a small back part. That is, the opening of the air guiding section 120 close to the air inlet section 122 is larger, and the opening of the air guiding section 120 close to the air outlet section 124 is smaller, so that the air guiding section 120 is gradually narrowed, and the speed and efficiency of heat exchange between the air flow in the air guiding section 120 and the heating element 106 are increased while the air speed is increased.

Further, in this embodiment, the air outlet section 124 generally needs to be assembled with other components. Therefore, the air pipe 104 is cut by a plane perpendicular to the central axis of the air pipe 104, the cross-sectional area of the air outlet section 124 is larger than that of the air inlet section 122, the size of the air outlet section 124 is increased, a certain space needs to be reserved, and the air outlet section 124 is convenient to assemble with other components.

In this embodiment, further, the warmer further includes a transparent shell, and the air duct 104 is also a transparent air duct 104, and the heating element 106 is a transparent tube. The air duct 104 is sleeved outside the heating element 106, and the transparent shell is located outside the air duct 104. During the use process of the user, the internal structure of the warmer can be directly observed, particularly the operation of the heating element 106 is observed, and the warm visual effect is provided for the user.

As shown in fig. 1, 2, 3 and 4, a seventh embodiment of the present invention proposes a warmer, comprising: a fan assembly 102, an air duct 104 and a heating element 106; the fan assembly 102 includes a bracket 112 and a fan 114.

As shown in fig. 2, the air duct 104 is connected to the blower assembly 102, and the heater 106 is disposed inside the air duct 104; a first air duct 108 is arranged in the heating element 106, and a second air duct 110 is formed between the heating element 106 and the air duct 104 after the heater is assembled; the heating element 106 can generate heat when working, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110 when working, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purposes of heat dissipation and heating.

In this embodiment, as shown in fig. 7, 8 and 9, an electrode 134 is provided on the heating element 106, and fixing members 136 are provided at axially opposite ends of the heating element 106, respectively. Wherein, the fixing component 136 can ensure the installation and fixation of the heating element 106; moreover, the fixing assembly 136 supplies power to the heating body 106 in the powered state, so that the fixing assembly 136 has fixing and power supplying functions, the structure of the fixing assembly 136 is greatly simplified, the number of parts of the fixing assembly 136 is reduced, the structure of the fixing assembly 136 is simplified to the greatest extent, and meanwhile, the cost of the fixing assembly 136 is reduced.

In this embodiment, further, as shown in fig. 8 and 9, the fixing assembly 136 includes a first fixing member 138 and a second fixing member 140. Wherein the first fixing member 138 is provided at an axial end portion of the heating body 106 and is brought into contact with the electrode 134 of the heating body 106 to fix the heating body 106 and supply power to the heating body 106 through the first fixing member 138. In addition, the first fixing member 138 is installed at the second fixing member 140, and the entire fixing member 136 is connected to an external structure through the second fixing member 140, so as to ensure stable installation of the heating body 106. In addition, according to the fixing assembly 136 provided by the invention, the heating element 106 is powered by the first fixing piece 138 in an electrified state, and the whole heating element 106 is ensured to be mounted on an external structure by the second fixing piece 140, so that the fixing assembly 136 has fixing and power supplying effects, the number of parts of the warmer is reduced, the structure of the warmer is simplified to the greatest extent, and meanwhile, the cost of the warmer is reduced.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a first embodiment of the present invention provides a warmer, including: a blower assembly 102, an air duct 104, and a heater 106. The air pipe 104 is connected with the fan assembly 102, and the heating element 106 is arranged inside the air pipe 104; the first air channel 108 is arranged in the heating element 106, the second air channel 110 is formed between the heating element 106 and the air pipe 104 after the heater is assembled, and the first air channel 108 and the second air channel 110 are communicated with the fan assembly 102 at the same time. During the operation of the heater, the heating element 106 can generate heat, and the fan 114 can simultaneously supply air into the first air duct 108 and the second air duct 110, so as to take the heat generated by the heating element 106 out of the heater, thereby achieving the purpose of heating.

In this embodiment, further, as shown in fig. 2 and 4, the heat generating body 106 is a heat generating tube. The interior of the heating tube is hollow to form a first air duct 108; the heat generating pipe is disposed inside the air duct 104, and a space is formed between the heat generating pipe and the air duct 104, so that a second air duct 110 is formed between an outer wall of the heat generating pipe and an inner wall of the air duct 104. The central axis of the heating tube coincides with the central axis of the air duct 104, so that the second air duct 110 has the same size in the radial direction of the heating tube, and the periphery of the heating tube has the same flow of air flow, thereby ensuring the uniform heat dissipation effect of the second air duct 110 around the heating tube. The length of the heating tube is larger than the diameter of the heating tube, and the ratio of the length of the heating tube to the diameter is larger than or equal to 1 and smaller than 50, so that the sufficient heating distance between the air flow in the first air duct 108 and the air flow in the second air duct 110 in the flowing process is ensured, and the temperature of the air flow blown out of the heater is ensured. The thickness of the heating tube is more than or equal to 0.1mm, and the structural strength and the heating efficiency of the heating tube are ensured. The heating power density of the heating element 106 is 50w/cm or less ² And the temperature of the air flow provided by the heater is ensured to be proper. The heating element 106 may generate heat on one side or both sides.

In this embodiment, further, as shown in fig. 2, the heat generating body 106 generates heat toward the inside differently from the heat toward the outside during operation, and the heat generating body 106 generates heat toward the inside smaller than the heat toward the outside in general. Therefore, when the air duct 104 and the heat generating body 106 are cut in a plane perpendicular to the central axis of the air duct 104, the ratio of the cross-sectional area of the second air duct 110 to the cross-sectional area of the first air duct 108 is 1 or more and 10 or less. So that the distribution of the gas matches the distribution of the heat generated from the heating body 106 to uniformly dissipate the heat inside and outside the heating body 106.

In this embodiment, as shown in fig. 2, the support 112 is provided with an air guide duct 116, the inlet end of the first air duct 108 is communicated with the fan 114 through the air guide duct 116, and the inlet end of the second air duct 110 is communicated with the fan 114 through the air guide duct 116. In the air blowing direction of the fan 114, the air guide duct 116 is in a reduced state. That is, the air guide duct 116 is cut out by a plane perpendicular to the central axis of the air guide duct 116, and the cross-sectional area of the air guide duct 116 is gradually reduced from the inlet end of the air guide duct 116 to the outlet end of the air guide duct 116, which is beneficial to the flow of the air flow and the concentration of the air flow toward the central axis of the air guide duct 116. The outlet end of the air guide duct 116 extends toward the air duct 104 and the heating element 106, and extends between the heating element 106 and the air duct 104. The distance between the axial end face of fan 114 facing heating element 106 and heating element 106 is 5mm or more.

In this embodiment, as shown in fig. 7, 8 and 9, an electrode 134 is provided on the heating element 106, and fixing members 136 are provided at axially opposite ends of the heating element 106, respectively. The securing assembly 136 includes a first securing member 138 and a second securing member 140. The first fixing member 138 is provided at an axial end portion of the heating body 106, and is in contact with the electrode 134 of the heating body 106 to fix the heating body 106 and supply power to the heating body 106 via the first fixing member 138. In addition, the first fixing member 138 is installed at the second fixing member 140, and the entire fixing member 136 is connected to an external structure through the second fixing member 140, so as to ensure stable installation of the heating body 106.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a second embodiment of the present invention provides a warmer, which includes a blower 114, a bracket 112, a heating element 106 and a draft tube 104. Wherein, the fan 114 is installed on the fan 114 bracket 112; the bracket 112 is connected with the air pipe 104 by means of glue or a buckle; the heating element 106 is located opposite to the bracket 112 and at the center inside the air duct 104. In the invention, the heating element 106 is positioned in the center of the air pipe 104, the transparent air pipe 104 is distributed outside the heating element 106, the shape of the transparent air pipe 104 ensures that the heating element 106 can fully radiate heat, and the fan 114 is arranged in front of or behind the heating element 106 and plays a role of blowing or sucking air.

In a specific embodiment, as shown in fig. 2 and fig. 6, the fan 114 operates, and the driving portion 132 drives the fan blades 126 to rotate, so that the air near the air inlet of the fan 114 is sucked, and the air is pushed forward by the fan blades 126 of the fan 114 after being sucked, then flows into the air guiding duct 116, and then is divided into two paths, one path flows into the first air duct 108, the other path flows into the second air duct 110, and then flows through the air outlet of the first air duct 108 and the air outlet of the second air duct 110, and finally is blown out. The blower 114 is usually placed in front of the wind pipe 104, and mainly functions to drive the wind and overcome the resistance caused by the heater 106 and the wind pipe 104. Specifically, the driving portion 132 may be a motor, the fan 114 may be a centrifugal fan, an axial flow fan, a cross flow fan, or the like, and one or more fans 114 may be provided.

In the embodiment, as shown in fig. 2, an air guiding duct 116 is provided between the fan 114 and the heating element 106, and is used for guiding the air generated by the fan 114 to the heating element 106, and the sectional area of the air guiding duct is usually reduced from large to small, which is beneficial for the air to flow and gather toward the center. The reason for concentrating the wind toward the center is that the axial flow fan 114 has a characteristic that the peripheral wind speed is high and the central wind speed is low, so that the wind passing through the wind guide duct 116 is not uniformly distributed on the cross section of the vertical wind pipe 104, and the heat dissipation of the heating element 106 is not uniform; if the cross-sectional area of the air guide duct 116 is changed from large to small, the air blown by the fan 114 is gathered toward the center, so that the air distribution on the cross section of the vertical air duct 104 is uniform, and the heat dissipation of the heating element 106 is more uniform.

In a specific embodiment, as shown in fig. 2, a distance between the blower 114 and the heating element 106 is required, and is usually more than 5 mm; the central axis of the heating element 106 and the central axis of the fan 114 are arranged in a superposition manner, the length and the diameter of the heating element 106 need to satisfy a certain proportional relationship, and the ratio of the length to the diameter of the heating element 106 is usually less than or equal to 50; the power density of the surface of the heat-generating body 106 is usually less than 50w/cm ² (ii) a The cross-sectional shape of the heating element 106 is usually circular, but is not limited thereto, and the thickness thereof is usually 0.1mm or more; the heat generating element 106 generates heat on one side in general, but may generate heat on both sides.

In a specific embodiment, as shown in fig. 2, two air ducts, namely a first air duct 108 and a second air duct 110, are usually arranged inside and outside the heat generating body 106, a certain proportional relationship exists between the cross-sectional area of the second air duct 110 and the cross-sectional area of the first air duct 108, and the ratio of the cross-sectional area of the second air duct 110 to the cross-sectional area of the first air duct 108 is usually not greater than 10.

In the embodiment, as shown in fig. 2 and 4, an air duct 104 is usually provided outside the heating element 106, and the air duct is used for limiting the flow area of the air, and mainly aims at enhancing the heat exchange efficiency and speed of the surface of the heating element 106. The shape of the air duct 104 is generally large in the front and small in the back, i.e., the air duct is larger near the air inlet and smaller near the air outlet, and the size of the air duct is generally gradually changed from the front to the back. The purpose is to gradually narrow the second air duct 110, and increase the speed and efficiency of heat exchange between the air and the heating element 106 while increasing the air speed. The size of the air outlet section 124 is usually larger than that of the air inlet section 122, mainly because the end of the air pipe 104 needs to be assembled with other components, and a certain space needs to be reserved.

In a specific embodiment, the joint between the support 112 and the air pipe 104 is usually filled with an insulating and temperature-resistant sealant, which is mainly used to ensure that air does not leak when flowing in the air pipe 104 and the support 112, and to ensure that the sealant can resist high temperature and is not affected by the heat radiation of the heating element 106 or hot air. As shown in fig. 5 and 6, the bracket 112 is provided with a mounting groove 118, and a gap between an edge of the mounting groove 118 and an edge of the fan 114 is small in order to ensure that wind does not leak. Meanwhile, the mounting slot 118 is usually provided with a screw hole 128, and the blower 114 can be fixed on a screw column 130 of the bracket 112 by screwing or the like.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present specification, the description of "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (17)

1. A warmer, comprising:

a fan assembly;

the air pipe is connected with the fan assembly;

the heating element, the at least part of heating element set up in the tuber pipe, the inside of heating element has first wind channel, the heating element with be formed with the second wind channel between the tuber pipe, the fan subassembly can to first wind channel with the air supply of second wind channel.

2. The warmer of claim 1,

the heating body is a heating tube;

the first air duct is positioned on the inner side of the heating tube;

the second air duct is located on the periphery of the heating tube.

3. The warmer of claim 2,

the central axis of the heating tube is coincident with the central axis of the air pipe; and/or

The central axis of the heating tube is coincident with the central axis of the fan component.

4. The warmer of claim 2,

the ratio of the length to the diameter of the heating tube is greater than or equal to 1 and less than or equal to 50; and/or

The thickness of the heating tube is more than or equal to 0.1mm.

5. The warmer of claim 1,

the heating power density of the heating body is less than or equal to 50w/cm ² (ii) a And/or

The heating surface of the heating body faces the first air duct and/or the second air duct.

6. The warmer according to any one of claims 1 through 5,

and cutting the air pipe and the heating body by using a plane vertical to the central shaft of the air pipe, wherein the ratio of the cross-sectional area of the second air channel to the cross-sectional area of the first air channel is more than or equal to 1 and less than or equal to 10.

7. The warmer of any one of claims 1 through 5, wherein the fan assembly comprises:

the air pipe is connected with the bracket;

and the fan is arranged on the bracket.

8. The warmer of claim 7,

the air guide air duct is arranged on the support, and the inlet end of the first air duct and the inlet end of the second air duct are communicated with the fan through the air guide air duct.

9. The warmer of claim 8,

the wind guide air duct is gradually reduced in the air supply direction of the fan.

10. The warmer of claim 8,

the end part of the air guide duct extends to the position between the heating body and the air duct.

11. The warmer of claim 8,

the side wall of the support extends towards one side of the air pipe to form the air guide duct.

12. The warmer of claim 7,

the bracket is provided with a mounting groove, and the fan is positioned in the mounting groove; and/or

The fan towards the axial terminal surface of heat-generating body one side, with the distance between the heat-generating body is more than or equal to 5mm.

13. The warmer of any one of claims 1 through 5, wherein the air duct comprises:

the second air duct is formed between the air guide section and the heating body;

the air inlet section is arranged at one end of the air guide section and is connected with the fan assembly;

and the air outlet section is arranged at the other end of the air guide section.

14. The warmer of claim 13,

intercepting the air pipe by using a plane vertical to a central shaft of the air pipe, wherein the cross-sectional area of the air inlet section is larger than that of the air guide section; and/or

And intercepting the air pipe by using a plane perpendicular to a central shaft of the air pipe, wherein the section area of the air outlet section is larger than that of the air inlet section.

15. The warmer according to any one of claims 1 through 5, further comprising:

the fan assembly and the air pipe are arranged in the transparent shell;

the air pipe is a transparent air pipe, and the heating body is a transparent pipe body.

16. The warmer according to any one of claims 1 through 5,

an electrode is arranged on the heating body;

the two ends that the heat-generating body axial is relative are provided with fixed subassembly respectively, fixed subassembly with the electrode electricity is connected, fixed subassembly can be used to fix the heat-generating body to do when getting electricity the heat-generating body power supply.

17. The warmer of claim 16, wherein said securing assembly comprises:

the first fixing piece is arranged at the axial end part of the heating body, is in contact with the electrode and can supply power to the heating body when being electrified;

and the first fixing piece is arranged on the second fixing piece.

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