CN212511063U - Garment steamer and steam boiler - Google Patents

Abstract

The utility model provides a garment steamer and a steam boiler, wherein the steam boiler comprises a heating element and a boiler cover component sleeved on at least part of the periphery of the heating element; a flow channel is formed between the outer side wall of the heating body and the inner side wall of the boiler cover component, and the flow channel is spirally arranged around the axis of the heating body; one end of the boiler cover component is provided with a water inlet and a steam outlet, a cavity extending along the axial direction is formed in the heating body, the inlet end of the flow channel is communicated with the water inlet, the outlet end of the flow channel is communicated with the inlet of the cavity, and the outlet of the cavity is communicated with the steam outlet. The utility model discloses a set up the runner into helical structure to form the cavity with the exit end intercommunication of runner in the heat-generating body, prolonged the vaporization passageway of water, make the water that does not vaporize that flows from the exit end of runner can also continue to carry out abundant vaporization at the cavity of heat-generating body, thereby effectively improved this steam boiler's vaporization ability.

Description

Garment steamer and steam boiler

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a garment steamer and steam boiler.

Background

The main machine of the garment steamer is provided with a steam boiler which is a boiler device for producing steam, and the specific working principle is that water entering the steam boiler from a water inlet hole is heated by adopting an electric heating mode or a fuel heating mode and the like, so that the water is converted into steam after absorbing heat and is discharged from a steam outlet hole of the steam boiler.

The existing steam boiler comprises a heater and a liquid container, wherein a flow channel with two ends communicated with a water inlet hole and a steam outlet hole is arranged in the liquid container. During operation, external liquid such as water flows into the flow channel from the water inlet hole, continuously absorbs heat released by the heater, is converted into steam, and finally flows out of the steam boiler from the steam outlet hole at one end of the flow channel.

However, the flow channel of the conventional steam boiler is generally in a straight-line shape, a U-shape or an S-shape, and water entering the flow channel from the water inlet hole is difficult to be scattered by the inner wall of the flow channel, so that the water in the flow channel cannot be effectively vaporized, and the vaporization effect of the steam boiler is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a garment steamer and steam boiler to the steam boiler who solves current garment steamer at least sets up the runner into the runner of style of calligraphy, U style of calligraphy or S type, leads to the unable fully vaporized problem of water in the runner.

The utility model provides a steam boiler, which comprises a heating element and a boiler cover component sleeved on at least part of the periphery of the heating element;

a flow channel is formed between the outer side wall of the heating body and the inner side wall of the boiler cover component, and the flow channel is spirally arranged around the axis of the heating body;

one end of the boiler cover component is provided with a water inlet and a steam outlet, a cavity extending along the axial direction is formed in the heating body, the inlet end of the flow channel is communicated with the water inlet, the outlet end of the flow channel is communicated with the inlet of the cavity, and the outlet of the cavity is communicated with the steam outlet.

The utility model sets the boiler cover component on the heating element in a set, when the steam boiler is installed, the boiler cover component can be directly set on the heating element, thus improving the installation efficiency of the steam boiler; a flow channel spirally surrounding the axis of the heating element is formed between the heating element and the side wall of the boiler cover component, and water flows in the flow channel spirally after entering the spirally surrounding flow channel, so that water drops continuously collide with the wall of the spiral flow channel under the action of centrifugal force, water drops in the flow channel can be thoroughly scattered, the water drops are thinned, the specific surface area of the water drops is improved, the heating area of the water drops in the flow channel is improved, and the vaporization efficiency of the water in the flow channel is improved; meanwhile, the flow channel is set to be a spiral flow channel around the axis of the heating element, the effective length of the flow channel is increased in a limited space, on one hand, the volume of the steam boiler is reduced, the space utilization rate of the steam boiler is improved, on the other hand, the flowing heating time of water in the flow channel is prolonged, and the vaporization efficiency is improved. In addition, a cavity extending along the axial direction is formed in the heating body, the inlet of the cavity is communicated with the outlet end of the flow channel, and the outlet of the cavity is communicated with the steam outlet, so that a vaporization channel of water is prolonged, unvaporized water flowing out of the outlet end of the flow channel can be fully vaporized in the cavity of the heating body, the vaporization capacity of the steam boiler is effectively improved, meanwhile, vaporized steam in the flow channel can be discharged from the steam outlet through the cavity in time, and the flow of water in the flow channel is facilitated.

In an optional mode, the outer side wall of the heating body is inwards recessed to form a first groove, and the first groove is spirally arranged around the axis of the heating body;

and the wall of the first groove and the inner side wall of the boiler cover component jointly enclose the flow channel.

The outer side wall of the heating body is directly sunken inwards to form the first groove, and the groove wall of the first groove and the inner wall of the boiler cover component jointly enclose a flow channel, so that on one hand, the integrity of the heating body is ensured, the structure of the heating body is simplified, the production efficiency of the steam boiler is improved, and the trouble of assembling parts is avoided; on the other hand, as the groove wall of the first groove and the inner side wall of the boiler cover component surround the flow channel, when water flows in the flow channel, the groove wall of the first groove can transfer heat to the water in the flow channel, the heat transfer area is increased, and the vaporization efficiency of the water in the flow channel is improved.

In an optional mode, a convex rib extends from the outer side wall of the heating body to the direction of the inner side wall of the boiler cover assembly, and a second groove matched with the convex rib is formed in the inner side wall of the boiler cover assembly;

at least part of the convex rib extends into the second groove.

The outer side wall of the heating body is provided with the convex rib extending towards the inner side wall of the boiler cover component, the inner side wall of the boiler cover component is provided with the second groove matched with the convex rib, and after the steam boiler is assembled, at least part of the convex rib extends into the second groove; so, can effectively guarantee that the lateral wall of heat-generating body and boiler cover subassembly's inside wall closely combine together to guarantee that the spiral runner can not take place to scurry the phenomenon of water each other, avoided taking place because of scurrying the condition that water leads to vaporization efficiency to descend, promoted the vaporization of runner water-logging.

In an alternative, the steam boiler further comprises a heating element;

at least part of the heating member is arranged in the heating body, and the part of the heating member in the heating body is arranged between the cavity and the flow passage.

The part that is located the heating-element through the heating member sets up between cavity and runner, and water is heated the vaporization in the runner, and when vapor after the vaporization passes through the cavity and discharges from the steam outlet, can also further receive the heating of heating member in the cavity to effectively avoided vapor to take place the condition of condensation in the cavity, guaranteed the steam heat from steam outlet exhaust vapor, effectively improved the heat utilization ratio of heating member.

In an alternative, the heating member includes a heating portion and connecting portions provided at both ends of the heating portion;

the heating part is positioned inside the heating body, the heating part is spirally arranged around the periphery of the cavity, and the connecting part extends to the outside of the boiler cover assembly from the heating body.

The heating element is arranged to comprise a heating part and a connecting part, and the connecting part extends to the outside of the boiler cover assembly, so that the boiler cover assembly can be conveniently connected with an external power supply to supply power to the heating part; the heating part is arranged in the heating body, so that the use safety of the steam boiler is ensured, and the danger of scalding is avoided; the heating part is spirally arranged around the periphery of the cavity; on one hand, the heating part arranged spirally increases the overall length of the heating part, ensures effective heating amount and improves the vaporization efficiency of water in the flow channel; on the other hand, be the spiral setting in the periphery of cavity for the vapor in whole cavity can both evenly receive the heating of the portion that generates heat, has avoided the condition of local condensation in the cavity to take place, has improved the steam quality that steam boiler produced.

In an alternative, the boiler head assembly includes an inner cover and an outer cover;

at least part of the inner cover is arranged on the outer side wall of the heating body, and the inner side wall of the inner cover and the groove wall of the first groove jointly enclose the flow channel;

the outer cover is arranged on the outer wall of the inner cover.

The boiler cover assembly is arranged to comprise the inner cover and the outer cover, and a flow channel is enclosed by the inner side wall of the inner cover and the wall of the first groove formed by the outer side wall of the heating body, so that the formation of the flow channel is facilitated; the arrangement of the outer cover can effectively protect the inner cover, when the boiler cover assembly is damaged, only the outer cover needs to be replaced, and the inner cover does not need to be replaced, so that the situation that an effective flow channel cannot be formed because the boiler cover assembly cannot be matched with a first groove formed on the outer side wall of the heating body due to the fact that the boiler cover assembly is integrally replaced is avoided; on the other hand, set to inner cup and enclosing cover, when the water heating vaporization to in the runner, the enclosing cover can also effectively keep warm to the runner, avoids calorific loss, has improved heating vaporization efficiency, has promoted heat utilization.

In an optional mode, the lateral wall of heat-generating body toward the lateral wall direction extension of inner cup has the protruding muscle, be formed with on the inside wall of inner cup with protruding muscle assorted second recess, at least part of protruding muscle stretch into to in the second recess.

The outer side wall of the heating body is provided with the convex rib extending towards the inner side wall of the inner cover, the inner side wall of the inner cover is provided with the second groove matched with the convex rib, and after the steam boiler is assembled, at least part of the convex rib extends into the second groove; so, can effectively guarantee that the lateral wall of heat-generating body and the inside wall of inner cup closely combine together to guarantee that the spiral runner can not take place to scurry the phenomenon of water each other, avoided taking place because of scurrying the condition that water leads to vaporization efficiency to descend, promoted the vaporization of water in the runner.

And/or, the inner cover comprises a first part and a second part which are detachably arranged, and the first part and the second part are respectively arranged at two sides of the axis of the heating body.

The inner cover is arranged into the first part and the second part which are detachable, and the first part and the second part are respectively arranged at two sides of the axis of the heating body, so that on one hand, when the inner cover is produced and manufactured, the first part and the second part can be conveniently demoulded, the production process is simplified, and the production cost is saved; on the other hand, when assembling the steam boiler, the convex rib of the outer side wall of the heating body can be conveniently matched with the second groove of the inner side wall of the inner cover, and the installation efficiency and the flow passage tightness are improved.

In an alternative form, the inner cover includes an inner cover provided on the side wall of the heat generating body and an inner top cover covering one end of the heat generating body; the outer cover comprises an outer side cover arranged on the outer surface of the inner cover and an outer top cover covered on the inner top cover, and the water inlet and the steam outlet penetrate through the inner top cover and the outer top cover.

The inner cover comprises the inner side cover and the inner top cover, the outer cover comprises the outer side cover and the outer top cover, and the inner top cover and the outer top cover provide connection positions for connecting the water inlet and the steam outlet with external equipment, so that the external equipment can conveniently provide water sources for the steam boiler and output steam generated by the steam boiler; meanwhile, the inner top cover and the outer top cover are arranged at one end of the heating body, so that heat in the steam boiler is prevented from losing from one end of the heating body, and the utilization efficiency of the heat is improved.

In an optional mode, a first extending part is formed at one end of the heating element far away from the inner top cover in the direction far away from the axis, and a second extending part opposite to the first extending part is formed at one end of the outer side cover of the outer cover far away from the outer top cover;

the first extension is connected to the second extension.

The first extension part is arranged at one end of the heating element far away from the inner top cover in the direction far away from the axis, and the second extension part arranged opposite to the first extension part is formed on the outer side cover; and the first extension part is connected with the second extension part, so that the stability of the assembled steam boiler is improved, the tightness of the spiral flow channel is improved, and the vaporization efficiency of water in the flow channel is improved.

In an alternative form, the steam boiler includes a heating element including a heat generating portion and connecting portions provided at both ends of the heat generating portion;

the heating part is positioned in the heating body, and the connecting part extends to the end face of the heating body far away from the inner top cover;

the steam boiler also comprises a temperature control assembly; the temperature control component sets up the heat-generating body is kept away from on the terminal surface of inside top cap, the temperature control component with the connecting portion electricity of heating member is connected, the temperature control component is used for detecting the temperature of heat-generating body, and when the temperature of heat-generating body reaches preset threshold value, control heating member stop work.

The heating element is arranged to comprise a heating part and a connecting part, and the connecting part extends to the outside of the boiler cover assembly, so that the boiler cover assembly can be conveniently connected with an external power supply to supply power to the heating part; the heating part is arranged in the heating body, so that the use safety of the steam boiler is ensured, and the danger of scalding is avoided; by arranging the temperature control component and electrically connecting the temperature control component with the connecting part, when the temperature control component detects that the temperature of the heating body reaches a preset threshold value, heating is stopped; the dangerous condition of dry combustion has been avoided steam boiler high temperature to appear on the one hand and has taken place, has improved the security and the life that steam boiler used, and on the other hand, when the temperature of heat-generating body reaches and predetermines the threshold value, the heating stops promptly, can also utilize the waste heat of heat-generating body to heat the vaporization to the water in the runner, has effectively saved the energy of consumption.

In an optional mode, the steam boiler further comprises a pressing plate, the pressing plate is pressed on one side of the temperature control assembly, which is far away from the heating body, and two ends of the pressing plate are fixed on the heating body.

Through setting up the clamp plate to through fixing the both ends of clamp plate on the heat-generating body, thereby fix the temperature control component on the heat-generating body, guaranteed the effective fixed of temperature control component and heat-generating body.

In an optional mode, a limiting groove is formed on one side, away from the heating body, of the temperature control assembly, and the part, located on the temperature control assembly, of the pressing plate is limited in the limiting groove.

A limiting groove is formed in one side, away from the heating body, of the temperature control component, and the part, located on the temperature control component, of the pressing plate is limited in the limiting groove; so, after fixing the temperature control component through the clamp plate, the spacing groove can further prescribe a limit to the temperature control component, has avoided the condition that the temperature control component takes place to shift to take place, has improved the accuracy that the temperature control component detected the temperature of heat-generating body, has further guaranteed steam boiler's safety in utilization.

In an optional mode, a bulge is formed on the outer wall of the boiler cover assembly, the bulge is arranged on the periphery of the water inlet and the steam outlet, and a first channel and a second channel which respectively penetrate through the water inlet and the steam outlet are formed in the bulge;

the steam boiler further comprises a water inlet joint and a steam outlet joint, and the water inlet joint and the steam outlet joint are respectively inserted into the first channel and the second channel.

The outer wall of the boiler cover assembly is provided with a bulge, and the bulge is provided with a first channel communicated with the water inlet and a second channel communicated with the steam outlet; therefore, the external equipment is convenient to be communicated with the water inlet and the steam outlet, so that a water source is provided for the steam boiler, and the steam generated by the steam boiler is led out. And, the setting of bulge has increased boiler cover subassembly's intensity, provides sufficient mounted position for water supply connector and play vapour joint, has guaranteed the stability of water supply connector and play vapour joint installation.

The utility model also provides a garment steamer, including host computer, water tank and as above steam boiler, steam boiler and the water tank of telling all set up on the host computer, just the water tank with steam boiler intercommunication.

The utility model discloses a communicate the water tank of garment steamer with above-mentioned steam boiler for water in the water tank can fully vaporize after getting into steam boiler, thereby has improved garment steamer's vapor output efficiency, has reduced the energy consumption of garment steamer host computer.

Advantages of additional aspects 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

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a full sectional view of a steam boiler provided in an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic diagram of an explosive structure of a steam boiler provided in an embodiment of the present application;

FIG. 4 is a schematic view showing a structure of a heat-generating body in a steam boiler according to an embodiment of the present application;

FIG. 5 is a schematic view of an overall structure of a steam boiler according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of another perspective of the overall structure of a steam boiler provided in the embodiments of the present application;

FIG. 7 is a cross-sectional view of a steam boiler according to an embodiment of the present application.

Description of reference numerals:

10-a heating element;

101-a first groove; 102-a rib; 103-cavity; 104-a first extension;

20-a boiler cap assembly;

201-a water inlet; 202-a steam outlet; 203-a second groove;

21-inner cover;

211-a first portion; 212-a second portion; 213-inner side cover; 214-inner roof;

22-an outer cover;

221-an outer cover; 222-an outer cap; 2211-a second extension;

23-a projection;

231 — a first channel; 232-a second channel;

30-a flow channel;

301-inlet end; 302-an outlet end;

40-a heating element;

401-a heat generating portion; 402-a connecting portion;

50-a seal;

60-a temperature control component;

61-a limit groove;

70-pressing plate;

80-water inlet joint;

801-a first limit portion;

802-a first stop;

90-steam outlet joint;

901-a second limiting part;

902-second stop.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The steam boiler is a device which vaporizes water into steam in the boiler in a heating mode so as to utilize the steam; conventional steam boilers generally include a heater and a liquid container having a flow channel therein, both ends of which are connected to a water inlet and a steam outlet. During operation, external liquid such as water flows into the flow channel from the water inlet hole, continuously absorbs heat released by the heater, is vaporized into steam, and finally flows out of the steam boiler from the steam outlet hole at one end of the flow channel. Thereby achieving vaporization of the water. However, the flow channel of the existing steam boiler is generally in a straight-line shape, a U-shape or an S-shape structure, and water entering the flow channel from the water inlet hole is difficult to be scattered by the inner wall of the flow channel, which causes that the water in the flow channel cannot be effectively vaporized, thereby reducing the vaporization effect of the steam boiler and having low heat utilization rate to the heater.

In order to solve the problems, in the embodiment of the application, the flow channel of the steam boiler is spirally arranged around the axis of the boiler body, water flows in the flow channel spirally after entering the spirally wound flow channel, and water drops in the flow channel are enabled to continuously collide with the wall of the spiral flow channel by utilizing centrifugal force, so that the water drops in the flow channel are thoroughly scattered, the water drops are made to be fine, and the specific surface area of the water drops is increased; thereby improving the heating area of the water drops in the flow passage, improving the vaporization efficiency of the water in the flow passage and improving the heat utilization rate of the heater.

FIG. 1 is a full sectional view of a steam boiler provided in an embodiment of the present application; FIG. 2 is an enlarged view of a portion of FIG. 1 at A; FIG. 3 is a schematic diagram of an explosive structure of a steam boiler provided in an embodiment of the present application; FIG. 4 is a schematic view showing a structure of a heat-generating body in a steam boiler according to an embodiment of the present application; FIG. 5 is a schematic view of an overall structure of a steam boiler according to an embodiment of the present disclosure; FIG. 6 is a schematic view of another perspective of the overall structure of a steam boiler provided in the embodiments of the present application; FIG. 7 is a cross-sectional view of a steam boiler according to an embodiment of the present application.

Referring to fig. 1 to 7, a detailed implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the embodiment of the present application provides a steam boiler, which includes a heating element 10 and a boiler cover assembly 20 disposed on at least a part of the periphery of the heating element 10; a flow channel 30 is formed between the outer side wall of the heating element 10 and the inner side wall of the boiler cover assembly 20, and the flow channel 30 is spirally arranged around the axis of the heating element 10; the boiler head assembly 20 is formed at one end thereof with a water inlet 201 and a steam outlet 202, for example, the water inlet 201 and the steam outlet 202 are formed at the top of the boiler head assembly 20.

Referring to fig. 1 and 4, in the embodiment of the present invention, a cavity 103 extending in an axial direction is formed in a heat generating body 10, an inlet of the cavity 103 is disposed away from a steam outlet 202, an outlet of the cavity 103 is communicated with the steam outlet 202, for example, when the steam outlet 202 is disposed at the top of a boiler cover assembly 20, the inlet of the cavity 103 is disposed near the bottom of the boiler cover assembly 20 (i.e., the bottom of the heat generating body 10), the outlet of the cavity 103 is communicated with the steam outlet 202, an inlet end 301 of a flow channel 30 is disposed at the top of the heat generating body 10 and is communicated with a water inlet 201, and an outlet end 302 of the flow channel 30 is disposed near the bottom of the heat generating body 10 and is communicated with the inlet.

Referring to fig. 7, it can be understood that when the outlet end 302 of the flow channel 30 is specifically communicated with the inlet of the cavity 103, a channel may be opened at a position near the bottom of the heating element 10, one end of the channel is communicated with the flow channel 30, and the other end is communicated with the cavity 103, so that the water vapor and the non-vaporized water in the flow channel 30 flow into the cavity 103 through the channel, and further are vaporized in the cavity 103, and then enter the steam outlet 202 of the boiler cover assembly 20 from the outlet of the cavity 103, and finally are discharged out of the boiler.

Specifically, as described with reference to fig. 1, in the embodiment of the present application, the cross-sectional area of the cavity 103 is larger than the cross-sectional area of the flow channel 30. Like this, water can enter into cavity 103 in the fast after the vaporization in runner 30, and the steam after having avoided the vaporization forms great atmospheric pressure and leads to the condition emergence that the water in runner 30 can not normally flow, and in addition, the steam after the vaporization can further be heated in cavity 103, the condition of condensation can not appear.

According to the embodiment of the application, the cavity 103 extending along the axial direction is formed in the heating element 10, the inlet end of the cavity 103 is communicated with the outlet end 302 of the flow channel 30, and the outlet end of the cavity 103 is communicated with the steam outlet 202, so that the vaporization passage of water is prolonged, unvaporized water flowing out of the outlet end 302 of the flow channel 30 can be fully vaporized in the cavity 103 of the heating element 10, and the vaporization capacity of the steam boiler is effectively improved. In addition, the vaporized water vapor in the flow channel 30 can be discharged from the vapor outlet 202 through the cavity 103 in time, which facilitates the flow of water in the flow channel 30.

In practical applications, the steam boiler may be applied to a garment steamer, for example, a water tank of the garment steamer and the steam boiler are both disposed on the main machine, the water tank is communicated with the water inlet 201 of the steam boiler, one end of the steam pipe is communicated with the steam outlet 202 of the steam boiler, and the other end of the steam pipe is communicated with the ironing nozzle. During operation, after water in the water tank enters the steam boiler to be vaporized, generated steam enters the steam pipe through the steam outlet 202 and then flows to the ironing spray head from the steam pipe, and therefore clothes to be ironed are subjected to steam ironing.

Referring to fig. 1, 3 and 4, the heat-generating body 10 in the embodiment of the present application may be a structure having a columnar shape and a central axis, and in some examples, the heat-generating body 10 may be a columnar structure; wherein, the boiler cover assembly 20 may be coated on at least a portion of the outer circumference of the heating body 10, so that a flow passage 30 through which water flows is formed between the heating body 10 and the boiler cover assembly 20.

The flow channel 30 of the embodiment of the present application is spirally arranged around the axis of the heating element 10, wherein the pitch of the spiral threads of the spiral flow channel 30, that is, the width of the flow channel 30, may be determined according to parameters such as the steam generation amount of the steam boiler or the power of the steam boiler, and the present application does not limit this.

Referring to fig. 1, a water inlet 201 and a steam outlet 202 formed on a boiler head assembly 20 are communicated with an external device. Specifically, the inlet 201 may be in communication with an external inlet conduit to provide a source of water for the steam boiler, and the outlet 202 may be in communication with a steam outlet conduit to provide steam generated by the steam boiler for use by a desired facility. Alternatively, in the embodiment of the present application, the boiler head assembly 20 may be made of an insulating material.

Specifically, referring to FIG. 1, in the present embodiment, the axis of the heat-generating body 10 is the direction indicated by L1-L1 shown in FIG. 1.

The mode of establishing boiler cover subassembly 20 at heat-generating body 10 sets up the complete set with this application embodiment, when steam boiler installation, can directly establish boiler cover subassembly 20 cover to heat-generating body 10, has improved steam boiler's installation effectiveness. Form the runner 30 that is the axis of spiral ring heat-generating body 10 between the lateral wall of heat-generating body 10 and boiler cap subassembly 20, after water gets into the runner 30 that the spiral encircleed, it flows in the runner to be the spiral heliciform, thereby under the effect of centrifugal force, the water droplet incessantly collides with spiral runner wall, can thoroughly break up the water droplet in the runner 30, make the water droplet thin, the specific surface area of water droplet has been promoted, thereby the heated area of water droplet in the runner 30 has been promoted, the vaporization efficiency of the water in the runner 30 has been improved.

In addition, the flow passage 30 is set to be a spiral flow passage around the axis of the heating element 10, and the effective length of the flow passage 30 is increased in a limited space, so that the volume of the steam boiler is reduced, the space utilization rate of the steam boiler is improved, the flowing heating time of water in the flow passage 30 is prolonged, and the vaporization efficiency is improved.

Referring to fig. 1 and 2, in some alternative embodiments, the outer side wall of the heat generating body 10 is recessed inward to form a first groove 101, and the first groove 101 is spirally arranged around the axis of the heat generating body 10; the walls of the first groove 101 and the inner side wall of the boiler head assembly 20 together enclose a flow channel 30.

Specifically, the first groove 101 in the embodiment of the present application may be formed by molding the heat-generating body 10 integrally with the heat-generating body 10. In some alternative modes, the first groove 101 may be integrally formed by a lathe after the heat-generating body 10 is cast.

Specifically, in the embodiment of the present invention, after the steam boiler is assembled, the outer sidewall of the boiler body 10 is closely attached to the inner sidewall of the boiler cover assembly 20, so that the walls of the first groove 101 and the inner wall of the boiler cover assembly 20 together enclose the flow channel 30.

In some possible implementations, the assembly of the boiler body 10 and the boiler cover assembly 20 may be an interference fit such that the outer side wall of the boiler body 10 is closely fitted with the inner side wall of the boiler cover assembly 20. In other possible implementations, when the boiler body 10 is assembled with the boiler cover assembly 20, a thermosetting sealant may be applied to the inner wall of the boiler cover assembly 20, so that the outer side wall of the boiler body 10 is tightly attached to the inner side wall of the boiler cover assembly 20. Of course, in other examples, it is also possible to insert sealing strips and the like on the outer side wall of the boiler body 10, and the embodiments of the present application are not described one by one.

In the embodiment of the application, the outer side wall of the heating element 10 is directly inwards recessed to form the first groove 101, and the groove wall of the first groove 101 and the inner wall of the boiler cover component jointly enclose the flow channel 30, so that on one hand, the integrity of the heating element 10 is ensured, the structure of the heating element 10 is simplified, the production efficiency of a steam boiler is improved, and the trouble of assembling parts is avoided; on the other hand, as the groove wall of the first groove 101 and the inner side wall of the boiler cover assembly 20 enclose the flow channel 30, when water flows in the flow channel 30, the groove wall of the first groove 101 can transfer heat to the water in the flow channel 30, thereby increasing the heat transfer area and improving the vaporization efficiency of the water in the flow channel 30.

Referring to fig. 1 and 2, in order to further ensure that water flows stably along the flow channel 30 without mixing, in the embodiment of the present invention, a rib 102 may be extended from an outer side wall of the heating element 10 toward an inner side wall of the boiler cover assembly 20, a second groove 203 matched with the rib 102 is formed in the inner side wall of the boiler cover assembly 20, and at least a portion of the rib 102 extends into the second groove 203.

Specifically, in the embodiment of the present application, the rib 102 may be integrally formed with the heating element 10 when the heating element 10 is cast, or may be formed by machining through a lathe after the heating element 10 is cast; this is not particularly limited in the embodiments of the present application. Accordingly, the second groove 203 may be integrally cast with the boiler head assembly 20, or may be machined after the boiler head assembly 203 is cast.

In the embodiment of the present application, the rib 102 and the second groove 203 may be in interference fit, so as to avoid the occurrence of water channeling in the spiral flow channel. In some examples, the top and bottom surfaces of the rib 102 may also be spaced apart from the top and bottom surfaces of the second groove 203, respectively, to facilitate extending the rib 102 into the second groove 203.

It should be noted that in the present embodiment, the rib 102 is formed on the outer side wall of the heat generating body 10, and the second groove 203 matching with the rib 102 is formed on the inner side wall of the boiler cover assembly 20 as an example, in some possible ways, the second groove 203 may be formed on the outer side wall of the heat generating body 10, and the rib 102 may be formed on the inner side wall of the boiler cover assembly 20.

In the embodiment of the present application, the rib 102 extending to the inner side wall of the boiler cover assembly 20 is provided on the outer side wall of the heating element 10, and the second groove 203 matching with the rib 102 is formed on the inner side wall of the boiler cover assembly 20, after the steam boiler is assembled, at least part of the rib 102 extends into the second groove 203; so, can effectively guarantee that the lateral wall of heat-generating body 10 and boiler cover subassembly 20's inside wall closely combine together to guarantee that spiral runner 30 can not take place to scurry the phenomenon of water each other, avoided taking place because of scurrying the condition that water leads to vaporization efficiency to descend, promoted the vaporization of runner 30 internal water.

Referring to fig. 1, the steam boiler provided in the embodiment of the present application further includes a heating element 40, at least a portion of the heating element 40 is disposed in the heating body 10, and a portion of the heating element 40 located in the heating body 10 is disposed between the cavity 103 and the flow passage 30.

The part of the heating element 40 positioned on the heating body 10 is arranged between the cavity 103 and the flow channel 30, water is heated and vaporized in the flow channel 30, and when the vaporized water vapor is discharged from the steam outlet 202 through the cavity 103, the water vapor can be further heated by the heating element 40 in the cavity 103, so that the condition that the water vapor is condensed in the cavity 103 is effectively avoided, the steam heat of the water vapor discharged from the steam outlet 202 is ensured, and the heat utilization rate of the heating element is effectively improved.

Specifically, the heating member 40 includes a heating portion 401 and connecting portions 402 provided at both ends of the heating portion 401; the heat generating member 401 is located inside the heat generating body 10, the heat generating member 401 is spirally arranged around the outer periphery of the cavity 103, and the connecting portion 402 extends from the heat generating body 10 to the outside of the boiler hood assembly 20.

Optionally, in this embodiment of the application, the heating portion 401 may be a heating resistance wire made of a carbon crystal tube, a heating copper tube, an iron-chromium-aluminum alloy, a nickel-chromium alloy, a copper-nickel alloy, or the like. The specific material of the heat generating portion 401 is not limited in the embodiment of the present application.

By providing the heating member 40 to include the heat generating portion 401 and the connection portion 402, the connection portion 402 extends to the outside of the boiler head assembly 20, so that it is possible to facilitate connection with an external power source to supply power to the heat generating portion 401. The heating part 401 is arranged inside the heating body 10, so that the use safety of the steam boiler is ensured, and the danger of scalding is avoided.

Meanwhile, the heating part 401 is spirally arranged around the periphery of the cavity 103, on one hand, the spirally arranged heating part 401 improves the overall length of the heating part 401, ensures effective heating amount and improves the vaporization efficiency of water in the flow channel; on the other hand, the spiral steam generator is spirally arranged on the periphery of the cavity 103, so that the steam in the whole cavity 103 can be uniformly heated by the heating part 401, the situation of local condensation in the cavity 103 is avoided, and the quality of the steam generated by the steam boiler is improved.

Referring to fig. 1 and 3, in some alternative embodiments, the boiler head assembly 20 includes an inner cover 21 and an outer cover 22; at least part of the inner cover 21 is arranged on the outer side wall of the heating element 10, and the inner side wall of the inner cover 21 and the groove wall of the first groove 101 jointly enclose a flow channel 30; the outer cap 22 is disposed on the outer wall of the inner cap 21.

It should be noted that, in some alternative examples, the boiler head assembly 20 may also include only the outer cover 22, and the groove wall of the first groove 101 and the inner side wall of the outer cover 22 enclose the composite flow channel 30.

In the embodiment of the present application, by providing the boiler cap assembly 20 including the inner cap 21 and the outer cap 22, the channel wall of the first groove 101 formed by the inner sidewall of the inner cap 21 and the outer sidewall of the heating element 10 is enclosed into the flow channel 30, which facilitates the formation of the flow channel 30; moreover, the arrangement of the outer cover 22 can effectively protect the inner cover 21, when the boiler cover assembly 20 is damaged, only the outer cover 22 needs to be replaced, and the inner cover 21 does not need to be replaced, so that the situation that the first groove 101 formed on the outer side wall of the heating element 10 cannot be matched with the boiler cover assembly 20 in the integral replacement process, and an effective flow channel 30 cannot be formed is avoided; on the other hand, set to inner cup 21 and enclosing cover 22, when the water heating vaporization in the runner 30, enclosing cover 22 can also effectively keep warm runner 30, avoids calorific loss, has improved heating vaporization efficiency, has promoted heat utilization.

Referring to fig. 2, the second groove 203 of the embodiment of the present application, which is matched with the rib 102 on the outer side wall of the heat-generating body 10, is specifically provided on the inner side wall of the inner lid 21, and at least a part of the rib 102 is extended into the second groove 203.

The convex rib 102 extending towards the inner side wall of the inner cover 21 is arranged on the outer side wall of the heating body 10, and the second groove 203 matched with the convex rib 102 is formed on the inner side wall of the inner cover 21, so that after the steam boiler is assembled, at least part of the convex rib 102 extends into the second groove 203; so, can effectively guarantee that the lateral wall of heat-generating body 10 and the inside wall of inner cup 21 closely combine together to guarantee that spiral runner 30 can not take place to scurry the phenomenon of water each other, avoided taking place because of scurrying the condition that water leads to vaporization efficiency to descend, promoted the vaporization of runner water-logging.

In the process of assembling the heating element 10 and the inner cover 21, thermosetting sealant can be coated on the inner wall of the second groove 203, so as to further improve the sealing property of the spiral flow channel after at least part of the rib 102 extends into the second groove 203.

In an alternative example, the rib 102 may be provided on the inner side wall of the inner lid 21 and extend toward the outer side wall of the heat-generating body 102; accordingly, a second groove 203 matching with the rib 102 is provided on the outer side wall of the heat-generating body 102.

Referring to FIG. 3, the inner lid 21, when specifically arranged, may include a first part 211 and a second part 212 detachably arranged, the first part 211 and the second part 212 being respectively arranged on both sides of the axis of the heat-generating body 10.

Specifically, in the embodiment of the present application, the first portion 211 and the second portion 212 may be two identical portions, or two different portions. For example, in some examples, the first portion 211 may be one fourth or one third of the entire cylinder of the inner lid 21 around the axis of the heat generating body 10.

In the embodiment of the present application, the water inlet 201 may be disposed on the first portion 211 or the second portion 212, and the steam outlet 202 may be formed by the first portion 211 and the second portion 212 in cooperation.

Alternatively, a sealing gasket may be provided at a portion where the first portion 211 and the second portion 212 are in contact fit, or the first portion 211 and the second portion 212 are in sealing connection in a snap-fit manner.

By arranging the detachable first part 211 and the detachable second part 212 of the inner cover 21 and arranging the first part 211 and the second part 212 at two sides of the axial line of the heating element 10 respectively, on one hand, when the inner cover 21 is produced, the demoulding of the first part 211 and the second part 212 after pouring forming can be facilitated, the production process is simplified, and the production cost is saved; on the other hand, when assembling the steam boiler, the rib 102 on the outer side wall of the heating element 10 can be conveniently matched with the second groove 203 on the inner side wall of the inner cover 21, and the installation efficiency and the flow passage tightness are improved.

Of course, in some examples, the inner lid 21 may be formed as an integral piece to simplify the structure of the inner lid 21 and improve the assembling efficiency between the inner lid 21 and the heat-generating body 10.

Referring to FIG. 1, in the present embodiment, the inner lid 21 includes an inner lid 213 provided on the side wall of the heat generating body 10 and an inner top lid 214 covering the first end of the heat generating body 10; the outer cover 22 includes an outer cover 221 disposed on the outer surface of the inner cover 213 and an outer cover 222 disposed on the inner cover 214, and the inlet port 201 and the outlet port 202 both penetrate the inner cover 214 and the outer cover 222.

Specifically, in the embodiment of the present application, the inner cover 213 and the inner top cover 214 may be formed by integral molding, and the outer cover 221 and the outer top cover 222 may also be formed by integral molding. Of course, in some possible examples, the inner cover 213 and the inner top cover 214 may be detachably disposed, and the outer cover 221 and the outer top cover 222 may be detachably disposed.

By arranging the inner cover 21 to include the inner cover 213 and the inner cover 214, and the outer cover 22 to include the outer cover 221 and the outer cover 222, the inner cover 214 and the outer cover 222 provide connection sites for the water inlet 201 and the steam outlet 202 to be connected with external equipment, thereby facilitating the external equipment to provide water source for the steam boiler and the output of the steam generated by the steam boiler; meanwhile, the inner top cover 214 and the outer top cover 222 cover the first end of the heating element 10, so that heat in the steam boiler is prevented from being lost from the first end of the heating element 10, and the utilization efficiency of the heat is improved.

Referring to fig. 1, in order to improve the connection strength between the outer cover 22 and the heat-generating body 10, in the embodiment of the present invention, a first extension portion 104 may be formed in a direction away from the axis line at the second end of the heat-generating body 10, a second extension portion 2211 disposed opposite to the first extension portion 104 may be formed at one end of the outer cover 221 of the outer cover 22 away from the outer top cover 222, and the first extension portion 104 may be connected to the second extension portion 2211.

Here, the heating element 10 may be integrally cast to form the first extension portion 104, and the second extension portion 2211 is integrally formed with the outer cover 22.

In some specific examples, the first extension part 104 is provided with a plurality of through holes, and the plurality of through holes are uniformly arranged around the axis of the heat generating body 10. The second extension 2211 is provided with a plurality of threaded holes, so that the first extension 104 and the second extension 2211 can be connected by screws to ensure stable connection of the heating body 10 and the boiler cover assembly.

By providing the first extension part 104 at the second end of the heating element 10 in the direction away from the axis and forming the second extension part 2211 provided opposite to the first extension part 104 on the outer cover 221, the first extension part 104 is connected to the second extension part 2211 when assembling the steam boiler, thereby improving the assembling efficiency of the steam boiler; and by connecting the first extension part 104 with the second extension part 2211, the stability of the assembled steam boiler is improved, and further the tightness of the spiral flow channel 30 is improved, and the vaporization efficiency of water in the flow channel is improved.

Referring to fig. 1, 3, in some examples, the steam boiler further includes a seal 50 disposed between the first extension 104 and the second extension 2211.

In a specific implementation, the width of the sealing member 50 is the same as the width of the first extension portion 104, so that after the first extension portion 104 is connected with the second extension portion 2211, the sealing member 50 completely covers the first extension portion 104, which is beneficial to buffering of the first extension portion 104 and the second extension portion 2211, and the heating element is effectively protected. Alternatively, in the present embodiment, the sealing member 50 may be made of a heat insulating material.

By arranging the sealing element 50 between the first extension part 104 and the second extension part 2211, after the steam boiler is assembled, on one hand, the sealing element 50 can prevent water and steam in the flow passage 30 from leaking, and the safety of the steam boiler in use is ensured; on the other hand, the sealing element 50 can also reduce the leakage of heat in the steam boiler, and improve the heat utilization rate.

Referring to fig. 1, 3 and 6, the steam boiler further comprises a temperature control assembly 60; the temperature control assembly is arranged at the second end of the heating element 10, the temperature control assembly 60 is electrically connected with the connecting part 402 of the heating element 40, and the temperature control assembly 60 is used for detecting the temperature of the heating element 10 and controlling the heating element 40 to stop working when the temperature of the heating element 10 reaches a preset threshold value.

Specifically, in the embodiment of the present application, the temperature control element 60 may be one of a physical temperature control element and an electronic temperature control element. As a specific example, the temperature control assembly 60 may be a temperature sensor such as a thermocouple or a platinum resistor.

In the embodiment of the application, by arranging the temperature control assembly 60 and electrically connecting the temperature control assembly 60 with the connecting part 402, when the temperature control assembly 60 detects that the temperature of the heating element 10 reaches a preset threshold value, the heating is stopped; on the one hand, the dangerous condition that the steam boiler is excessively heated and is dried is avoided, the use safety of the steam boiler is improved, the service life of the steam boiler is prolonged, on the other hand, when the temperature of the heating body 10 reaches a preset threshold value, heating is stopped, the waste heat of the heating body 10 can be utilized to heat and vaporize water in the flow channel, and consumed energy is effectively saved.

Referring to fig. 6, the steam boiler according to the embodiment of the present invention further includes a pressing plate 70, the pressing plate 70 is press-fitted on a side of the temperature control assembly 60 away from the heating element 10, and both ends of the pressing plate 70 are fixed on the heating element 10.

Specifically, referring to fig. 6, in the present embodiment, the heat generating element 10 has a fixing portion for fixing the pressure plate 70, and both ends of the pressure plate 70 are fixed to the heat generating element 10 via the fixing portion. The fixing portion may be a fixing screw hole, and both ends of the pressing plate 70 are fixed to the heating element 10 by bolts or screws.

By arranging the pressing plate 70 and fixing the two ends of the pressing plate 70 on the heating body 10, the temperature control component 60 is fixed on the heating body 10, and the temperature control component 60 is effectively fixed with the heating body 10.

Referring to fig. 6, in an alternative mode, a limiting groove 61 is formed on a side of the temperature control member 60 facing away from the heating body 10, and a portion of the pressure plate 70 located on the temperature control member 60 is limited in the limiting groove 61.

Specifically, in the embodiment of the present application, the width of the limiting groove 61 matches with the width of the pressing plate 70.

The side of the temperature control component 60, which is far away from the heating body 10, is provided with a limiting groove 61, and the part of the pressure plate 70, which is positioned on the temperature control component 60, is limited in the limiting groove 61; so, after the temperature control assembly 60 is fixed through the pressing plate 70, the limiting groove 61 can further limit the temperature control assembly 60, thereby avoiding the situation that the temperature control assembly 60 shifts, improving the accuracy of the temperature control assembly 60 in detecting the temperature of the heating body 10, and further ensuring the use safety of the steam boiler.

Referring to fig. 1 and 5, in some alternative examples, the outer wall of the boiler cap assembly 20 is formed with a protrusion 23, the protrusion 23 is disposed at the outer circumference of the water inlet 201 and the steam outlet 202, the protrusion 23 is formed with a first passage 231 and a second passage 232 penetrating the water inlet 201 and the steam outlet 202, respectively, and the steam boiler further includes a water inlet joint 80 and a steam outlet joint 90, and the water inlet joint 80 and the steam outlet joint 90 are inserted into the first passage 231 and the second passage 232, respectively.

Wherein, the water inlet joint 80 is used for being connected with an external water inlet pipeline, and the steam outlet joint 90 is used for being connected with an external steam pipeline. The arrangement of the water inlet joint 80 and the steam outlet joint 90 further facilitates the quick communication between the external water inlet pipe and the steam pipeline and the water inlet 201 and the steam outlet 202 of the steam boiler in the embodiment of the present application respectively.

Specifically, in the present embodiment, the protrusion 23 may be integrally formed with the boiler cover assembly 20, for example, the protrusion 23 may be integrally formed with the outer top cover 222.

By forming a projection 23 on an outer wall of the boiler head assembly 20 and providing a first passage 231 communicating with the inlet port 201 and a second passage 232 communicating with the outlet port 202 at the projection 23; this facilitates communication between external equipment and the inlet 201 and outlet 202 to provide a source of water for the steam boiler and to conduct steam generated by the steam boiler away. And, the provision of the protrusion 23 increases the strength of the boiler cover assembly 20, provides a sufficient installation position for the water inlet joint 80 and the steam outlet joint 90, and ensures the stability of the installation of the water inlet joint 80 and the steam outlet joint 90.

Referring to fig. 1, when the water inlet joint 80 is specifically arranged, a first limiting portion 801 may extend from one end of the water inlet joint close to the water inlet 201 to a direction away from a hole axis of the water inlet 201, and the first limiting portion 801 abuts against an outer wall of the top of the first channel 231;

specifically, in the embodiment of the present application, the hole axis of the water inlet 201 may be an axis shown by L2-L2 in fig. 1.

Similarly, a second limiting portion 901 extends from one end of the steam outlet joint 90 close to the steam outlet 202 to a direction away from the hole axis of the steam outlet 202, and the second limiting portion 901 abuts against the top outer wall of the second channel 232.

Specifically, in the embodiment of the present application, the first passage 231 and the second passage 232 may be passages having internal threads, and the water inlet connector 80 and the steam outlet connector 90 may be connectors having external threads, such that the water inlet connector 80 is connected to the first passage 231 by threads, and the steam outlet connector 90 is connected to the second passage 232 by threads.

By arranging the first limiting part 801 far away from the hole axis direction on the water inlet joint 80 and the second limiting part 901 on the steam outlet joint 90, after the water inlet joint 80 is installed in the first channel 231, the first limiting part 801 abuts against the outer wall of the top of the first channel 231, and after the steam outlet joint 90 is installed in the second channel 232, the second limiting part 901 abuts against the outer wall of the top of the second channel 232; so, the condition that excessively extends to water inlet 201 and play steam port 202 when having avoided water supply connector 80 and the installation of play steam head 90 takes place, effectively protects boiler body 10 not destroyed to can also effectively guarantee that water supply connector 80 is connected with first passageway 231 and play steam head 90 and the leakproofness of second channel connection, the condition of having avoided appearing leaking or leaking is taken place.

Referring to fig. 1 and 3, in the embodiment of the present application, one end of the water inlet joint 80 away from the heating element 10 may further be provided with a first stopping portion 802, and after the water inlet joint 80 is communicated with an external pipeline, the first stopping portion 802 is provided to avoid the pipeline from falling off, so as to ensure the stability of the connection between the water inlet joint 80 and the external pipeline. Similarly, the end of the steam outlet joint 90 away from the heating element 10 can also be formed with a second stopping portion 902, and after the steam outlet joint 90 is communicated with an external pipeline, the second stopping portion 902 can prevent the pipeline from falling off, so that the stability of the connection between the steam outlet joint 90 and the external pipeline is ensured, and the safety of the use of the steam boiler is improved.

The embodiment of the application also comprises a garment steamer, which comprises a main machine and a steam boiler arranged on the main machine, wherein in practical application, the water tank and the steam boiler of the garment steamer are both arranged on the main machine, the water tank is communicated with the water inlet 201 of the steam boiler, one end of the steam pipe is communicated with the steam outlet 202 of the steam boiler, and the other end of the steam pipe is communicated with the ironing spray head. During operation, after water in the water tank enters the steam boiler to be vaporized, generated steam enters the steam pipe through the steam outlet 202 and then flows to the ironing spray head from the steam pipe, and therefore clothes to be ironed are subjected to steam ironing.

The utility model discloses a communicate above-mentioned steam boiler with the water tank of garment steamer for water in the water tank can fully vaporize after getting into steam boiler, thereby has improved the vapor output efficiency of garment steamer, has reduced the energy consumption of garment steamer host computer.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (14)

1. A steam boiler is characterized by comprising a heating body (10) and a boiler cover component (20) sleeved on at least part of the periphery of the heating body (10);

a flow channel (30) is formed between the outer side wall of the heating body (10) and the inner side wall of the boiler cover component (20), and the flow channel (30) is spirally arranged around the axis of the heating body (10);

one end of the boiler cover assembly (20) is provided with a water inlet (201) and a steam outlet (202), a cavity (103) extending along the axial direction is formed in the heating body (10), an inlet end (301) of the flow channel (30) is communicated with the water inlet (201), an outlet end (302) of the flow channel (30) is communicated with an inlet of the cavity (103), and an outlet of the cavity (103) is communicated with the steam outlet (202).

2. A steam boiler according to claim 1, characterized in that the outer side wall of the heat generating body (10) is recessed inwardly to form a first groove (101), and the first groove (101) is spirally arranged around the axis of the heat generating body (10);

the wall of the first groove (101) and the inner side wall of the boiler cover assembly (20) jointly enclose the flow channel (30).

3. A steam boiler according to claim 2, characterized in that a rib (102) is formed on the outer side wall of the heating element (10) extending in the direction of the inner side wall of the boiler cover assembly (20), and a second groove (203) matching with the rib (102) is formed on the inner side wall of the boiler cover assembly (20);

at least part of the rib (102) extends into the second groove (203).

4. A steam boiler according to claim 2, characterized in that the steam boiler further comprises a heating element (40);

at least part of the heating member (40) is arranged in the heating body (10), and the part of the heating member (40) in the heating body (10) is arranged between the cavity (103) and the flow passage (30).

5. A steam boiler according to claim 4, characterized in that the heating element (40) comprises a heat generating portion (401) and connecting portions (402) arranged at both ends of the heat generating portion (401);

the heating part (401) is positioned inside the heating body (10), the heating part (401) is spirally arranged around the periphery of the cavity (103), and the connecting part (402) extends from the heating body (10) to the outside of the boiler hood assembly (20).

6. A steam boiler according to any of the claims 2-5, characterized in that the boiler cover assembly (20) comprises an inner cover (21) and an outer cover (22);

at least part of the inner cover (21) is arranged on the outer side wall of the heating body (10), and the inner side wall of the inner cover (21) and the groove wall of the first groove (101) jointly enclose the flow channel (30);

the outer cover (22) is arranged on the outer wall of the inner cover (21).

7. A steam boiler according to claim 6, characterized in that the side wall of the heating element (10) is extended with a rib (102) towards the side wall of the inner cover (21), the inner side wall of the inner cover (21) is formed with a second groove (203) matching with the rib (102), at least part of the rib (102) is extended into the second groove (203);

and/or, the inner cover (21) comprises a first part (211) and a second part (212) which are detachably arranged, and the first part (211) and the second part (212) are respectively arranged at two sides of the axial line of the heating body (10).

8. A steam boiler according to claim 6, characterized in that the inner cover (21) comprises an inner side cover (213) provided on the side wall of the heat generating body (10) and an inner top cover (214) covering one end of the heat generating body (10); the outer cover (22) comprises an outer side cover (221) arranged on the outer surface of the inner side cover (213) and an outer top cover (222) covered on the inner top cover (214), and the water inlet (201) and the steam outlet (202) both penetrate through the inner top cover (214) and the outer top cover (222).

9. A steam boiler according to claim 8, characterized in that one end of the heat generating body (10) remote from the inner top cover (214) is formed with a first extension part (104) in a direction away from the axis, and one end of the outer cover (221) of the outer cover (22) remote from the outer top cover (222) is formed with a second extension part (2211) disposed opposite to the first extension part (104);

the first extension (104) is connected to the second extension (2211).

10. A steam boiler according to claim 8, characterized in that the steam boiler comprises a heating element (40), the heating element (40) comprising a heat generating portion (401) and connecting portions (402) arranged at both ends of the heat generating portion (401);

the heating part (401) is positioned in the heating body (10), and the connecting part (402) extends to the end face of the heating body (10) far away from the inner top cover (214);

the steam boiler also comprises a temperature control assembly (60); the temperature control component sets up heat-generating body (10) are kept away from on the terminal surface of inside cap (214), temperature control component (60) with connecting portion (402) electricity of heating member (40) is connected, temperature control component (60) are used for detecting the temperature of heat-generating body (10), and when the temperature of heat-generating body (10) reached and predetermines the threshold value, control heating member (40) stop work.

11. A steam boiler according to claim 10, characterized in that the steam boiler further comprises a pressure plate (70), the pressure plate (70) is press-fitted on the side of the temperature control assembly (60) facing away from the heating element (10), and both ends of the pressure plate (70) are fixed on the heating element (10).

12. A steam boiler according to claim 11, characterized in that the side of the temperature control assembly (60) facing away from the heat generating body (10) is formed with a limiting groove (61), and the part of the pressure plate (70) located at the temperature control assembly (60) is limited in the limiting groove (61).

13. A steam boiler according to any of the claims 1-5, characterized in that the outer wall of the boiler cap assembly (20) is formed with a protrusion (23), the protrusion (23) is arranged at the outer periphery of the inlet (201) and the outlet (202), the protrusion (23) is formed with a first channel (231) and a second channel (232) penetrating the inlet (201) and the outlet (202), respectively;

the steam boiler further comprises a water inlet joint (80) and a steam outlet joint (90), wherein the water inlet joint (80) and the steam outlet joint (90) are respectively inserted into the first channel (231) and the second channel (232).

14. A garment steamer comprising a main unit, a water tank and a steam boiler as claimed in any one of claims 1 to 13, wherein the steam boiler and the water tank are both arranged on the main unit and the water tank is in communication with the steam boiler.

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