CN211609333U

CN211609333U - Oven that heating efficiency is high

Info

Publication number: CN211609333U
Application number: CN201921427722.XU
Authority: CN
Inventors: 王旭宁; 赵鹏军; 张雪岩
Original assignee: Joyoung Co Ltd
Current assignee: Hangzhou Jiuchuang Home Appliances Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-10-02
Anticipated expiration: 2029-08-30

Abstract

The utility model relates to an oven that heating efficiency is high. The steam and hot air delivery path of current oven is inconsistent, leads to eating the material unable thermally equivalent. The utility model discloses a casing, be equipped with the culinary art chamber in the casing, generate heat chamber and steam generation subassembly, generate heat the intracavity and be equipped with fan and heating tube, the fan orders about the air current to flow through the heating tube with the hot-blast of formation input culinary art chamber, is equipped with the motor in the casing, and the motor shaft orders about the fan rotation through the drive shaft, is equipped with gas transmission channel in the drive shaft, and the steam that steam generation subassembly produced passes through gas transmission channel and carries to the intracavity that generates heat to blown away to the culinary art chamber by the fan. Establish gas transmission channel in the drive shaft for steam can be carried to fan department through gas transmission channel, is broken up uniformly again by the fan and blows to each region of culinary art chamber, and existing effect promotes heat utilization efficiency, prevents that the heat from increasing the calorific loss because of concentrating on local area, still ensures to eat each region of material and can be heated by the uniformity, promotes the culinary art quality, promotes and uses experience.

Description

Oven that heating efficiency is high

Technical Field

The utility model relates to a food processing field, concretely relates to oven.

Background

Present steam type oven includes the casing, be equipped with the culinary art chamber in the casing, generate heat chamber and steam generation subassembly, the uncovered that leads to with the external world is seted up to the antetheca in culinary art chamber, be equipped with the door plant subassembly in the uncovered, generate heat the intracavity and be equipped with fan and heating tube, the fan orders about the air current and cooks the hot-blast in chamber in order to form the input with the formation heating tube, and steam generation subassembly forms the steam in input culinary art chamber, utilizes hot-blast and steam promotion culinary art efficiency. Present steam is carried to the culinary art chamber directly, and steam can influence because of the gathering influences eating material heating homogeneity in culinary art chamber local area, influences the culinary art quality, in addition, can blow away steam by the hot-blast of the chamber input culinary art chamber that generates heat, has reduced heat utilization efficiency, and the influence is used and is experienced.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art, the utility model provides an oven that heating efficiency is high adds gas transmission channel in the drive shaft that the fan was used of ordering about for steam can be along with hot-blast evenly blown to each region of culinary art chamber, both promotes heating efficiency, still ensures the culinary art quality, promotes to use and experiences.

The utility model discloses a following mode realizes: the utility model provides an oven that heating efficiency is high, includes the casing, be equipped with the culinary art chamber in the casing, generate heat chamber and steam generation subassembly, the uncovered that leads to with the external world is seted up to the antetheca in culinary art chamber, be equipped with the door plant subassembly in the uncovered, generating heat intracavity is equipped with fan and heating tube, and the fan orders about the air current hot-blast in order to form the input culinary art chamber through the heating tube, be equipped with the motor in the casing, the motor shaft orders about the fan rotation through the drive shaft, be equipped with the gas transmission passageway in the drive shaft, the steam that steam generation subassembly produced is carried to the intracavity that generates heat through the gas transmission. Set up gas transmission channel in original drive shaft for steam can be carried to fan department through gas transmission channel, is broken up uniformly again by the fan and blows to each region of culinary art chamber, and existing effect promotes heat utilization efficiency, prevents that the heat from increasing heat loss because of concentrating on local area, still ensures to eat each region of material and can be heated by the uniformity, promotes the culinary art quality, promotes and uses experience. The drive shaft not only plays a role in driving the fan to rotate, but also plays a role in conveying steam, and the steam generated by the steam generating assembly is conveyed into the heating cavity through the gas conveying channel. The fan not only plays a role in mixing and scattering hot air and steam, but also plays a role in uniformly conveying heat to each area of the cooking cavity.

Preferably, the inner end of the driving shaft is inserted into the heating cavity and fixedly connected with the fan, the outer end of the driving shaft is fixedly connected with the motor shaft, the gas transmission channel is formed along the axial direction of the driving shaft, the inner end of the gas transmission channel is communicated with the heating cavity through the gas outlet, and the outer end of the gas transmission channel is communicated with the steam generation assembly through the gas inlet. The fan is arranged in the heating cavity and plays a role in scattering, mixing and blowing the hot air and the steam to the cooking cavity. In use, the motor shaft rotates the drive shaft, which in turn rotates the fan. The gas transmission channel is arranged along the axial direction of the driving shaft, so that two ends of the gas transmission channel are respectively communicated with the steam generation assembly and the heating cavity.

Preferably, a turbine assembly is sleeved on the outer end portion of the driving shaft, an annular turbine cavity is formed in the turbine assembly, and after the driving shaft is installed in place, the driving shaft can rotatably penetrate through the turbine assembly, so that the gas transmission channel is communicated with the turbine cavity through the gas inlet. The turbine chamber both plays the effect that the receipt comes from steam generation subassembly steam, plays the effect of buffering storage, can also provide the effect of steam for the gas transmission passageway, ensures that the chamber that generates heat can obtain sufficient steam, ensures to eat the material by the steaming culinary art. The turbine chamber is cyclic annular, and when the drive shaft rotated, gas transmission channel's air inlet was located annular turbine intracavity all the time, ensured that gas transmission channel can receive the steam that comes from the turbine chamber at any time, ensured to steam and cooks continuation, promoted the culinary art quality.

Preferably, a through hole is formed in the wall surface of the heating cavity, which faces away from the cooking cavity, the turbine assembly is arranged at the outer port of the through hole, the turbine assembly comprises an inner cover and an outer cover, and the inner end part of the driving shaft sequentially penetrates through the turbine cavity and the through hole from outside to inside and then is fixedly connected with the fan. The turbine assembly is arranged on the side, back to the cooking cavity, of the heating cavity, so that the turbine assembly is convenient to install, and the heating cavity is not influenced to be communicated with the cooking cavity. The turbine subassembly is formed by inner cup and dustcoat cooperation installation, has both made things convenient for the superpose assembly, can also make things convenient for after the installation to assemble with the drive shaft. When the fan is installed, the driving shaft sequentially penetrates through the outer cover and the inner cover, then penetrates through the through hole and is fixedly connected with the fan.

Preferably, the inner cover and the outer cover are respectively provided with an internal hole and an external hole which are coaxially arranged with the through hole, and the internal hole and the driving shaft as well as the external hole and the driving shaft are rotationally sealed through shaft seals. The periphery of the inner cover and the periphery of the outer cover are clamped and sealed through a sealing ring. After the installation is in place, the drive shaft can rotationally penetrate through the built-in hole and the built-out hole and is sealed through the shaft seal, the inner cover and the outer cover are connected in a sealing mode through the sealing ring, the drive shaft can be ensured to transmit circumferential driving force to the fan, steam in the turbine cavity is effectively prevented from leaking outwards through gaps between the built-in hole and the drive shaft and between the built-out hole and the drive shaft, the heat utilization efficiency is improved, and the condition that peripheral electric appliances of the turbine cavity break down due to deterioration of the working environment is effectively prevented.

Preferably, the bottom of the turbine cavity is provided with a vent hole communicated with the steam generation assembly. Steam generated by the steam generation assembly is input into the turbine cavity through the vent holes, and due to buoyancy of the steam, the steam can automatically pass through the vent holes and be gathered in the turbine cavity.

Preferably, the turbine cavity is cylindrical, a spiral cleaning brush is arranged in the turbine cavity, the cleaning brush is coaxially and fixedly connected with the driving shaft, and after the cleaning brush is installed in place, the driving shaft drives the cleaning brush to rotate so that the surface of the cleaning brush is attached to and rubbed with the inner wall of the turbine cavity. The cleaning brush is driven by the driving shaft to rotate, so that the wall surface of the turbine cavity is cleaned by the cleaning brush, dirt is driven to the vent hole to be discharged outside, the steam is stirred, and the air inlet can obtain steam with uniform heat at any time.

Preferably, a steam nozzle is screwed to the inner end of the drive shaft, and the air outlet is opened in a circumferential wall of the steam nozzle. The steam nozzle is adjacent to the fan, and the air outlets are radially formed, so that the steam can be uniformly conveyed to each area of the cooking cavity by the fan after being output.

Preferably, a snap spring is sleeved and fixedly connected on a section of the driving shaft between the through hole and the steam nozzle, and the fan is sleeved on the outer end part of the driving shaft and is axially clamped and positioned by the steam nozzle and the snap spring. The clamp spring and the steam nozzle are matched to axially clamp the fan, so that the fan is convenient to disassemble and assemble, the fan is still ensured to be linked with the driving shaft all the time when the fan operates, and the operation stability is improved.

Preferably, the air outlet is plural and is circumferentially provided at equal intervals on the inner end portion of the drive shaft, and the air inlet is plural and is circumferentially provided at equal intervals on the outer end portion of the drive shaft. The steam flow and the flow uniformity are improved by increasing the number of the air outlets and the air inlets, and the on-the-way loss is reduced by shortening the time of steam conveying.

The utility model has the advantages that: set up gas transmission channel in original drive shaft for steam can be carried to fan department through gas transmission channel, is broken up uniformly again by the fan and blows to each region of culinary art chamber, and existing effect promotes heat utilization efficiency, prevents that the heat from increasing heat loss because of concentrating on local area, still ensures to eat each region of material and can be heated by the uniformity, promotes the culinary art quality, promotes and uses experience.

Drawings

FIG. 1 is a schematic cross-sectional view of an oven according to an embodiment;

FIG. 2 is a schematic view of a portion of the oven according to the second embodiment;

FIG. 3 is a schematic sectional view showing an assembling structure of a turbine assembly according to a second embodiment;

FIG. 4 is a schematic sectional view of the drive shaft according to the second embodiment;

FIG. 5 is a schematic sectional view showing an assembling structure of a turbine assembly according to the third embodiment;

in the figure: 1. the heating device comprises a shell, 11, a cooking cavity, 12, a heating cavity, 13, a motor, 14, a driving shaft, 141, an air transmission channel, 142, a steam spray head, 143, an air outlet, 144, an air inlet, 145, a clamp spring, 15, a fan, 16, a turbine assembly, 161, an inner cover, 162, an outer cover, 163, a sealing ring, 164, a shaft seal, 165, an air vent, 166, a cleaning brush, 17 and a heating pipe.

Detailed Description

The essential features of the invention will be further explained below with reference to the drawings and the detailed description of the invention.

The first embodiment is as follows:

the embodiment provides an oven with high heating efficiency.

An oven that heating efficiency is high as shown in fig. 1 comprises a casing 1, a cooking cavity 11, a heating cavity 12 and a steam generating assembly are arranged in the casing 1, an opening communicated with the outside is formed in the front wall of the cooking cavity 11, a door panel assembly is arranged in the opening, a fan 15 and a heating pipe 17 are arranged in the heating cavity 12, the fan 15 drives air to flow through the heating pipe to form hot air input into the cooking cavity 11, a motor 13 is arranged in the casing 1, the motor shaft drives the fan 15 to rotate through a driving shaft 14, an air conveying channel 141 is arranged in the driving shaft 14, and steam generated by the steam generating assembly is conveyed into the heating cavity 12 through the air conveying channel 141 so as to be blown away into the cooking cavity 11 by the fan 15.

In this embodiment, be equipped with culinary art chamber 11 in the casing 1, set up uncovered on the preceding wall in culinary art chamber 11, be equipped with the door plant subassembly on the uncovered, the door plant subassembly passes through the hinge and can installs openly on uncovered for the door plant subassembly can be at the uncovered closed station of shutoff and the uncovered swing between opening the station and switch. The user realizes cooking chamber 11 and external space through opening the door plant subassembly and leads to, is convenient for implement to eat and gets to put the operation, realizes cooking chamber 11 and external space completely closed through closing the door plant subassembly, is convenient for heat the culinary art to eating the material.

In this embodiment, a heat generating cavity 12 is provided in the housing 1, and a fan 15 and a heat generating pipe are provided in the heat generating cavity 12. The heating tube can generate heat under the condition of electrifying. The motor 13 for driving the fan 15 to rotate is arranged in the shell 1, the motor 13 is arranged outside the heating cavity 12, the motor 13 is protected, and the motor 13 is prevented from being broken down due to overhigh ambient temperature. When the electric cooker is used, the heating pipe is connected with electricity and generates heat, the motor 13 is connected with electricity and drives the fan 15 to rotate through the driving shaft 14, the air current driven by the fan 15 flows through the heating element and forms hot air blown into the cooking cavity 11, and the hot air heats and cooks food materials. In the process, the heating cavity 12 plays a role in gathering and heat preservation for heat generated by the heating tube, plays a role in guiding air flow formed by the fan 15, and ensures that the heat on the heating tube can be taken away by the air flow in time and is discharged to the cooking cavity 11.

In this embodiment, a steam generating assembly is arranged in the housing 1, and the steam generating assembly comprises a water tank, a water pump and a steam generator. When the device is installed, the water tank is connected with the water pump, the water pump is connected with the steam generator, and the steam generator is connected with the cooking cavity 11 through pipelines. When the food steaming machine is used, the water pump extracts water source in the water tank and conveys the water source to the steam generator, the steam generator heats the water source and forms steam which is input into the cooking cavity 11, and the steam steams and cooks food materials.

When using the steaming oven, hot-blast subassembly and steam generation subassembly simultaneous working heat the culinary art to eating the material, and at this in-process, steam generation subassembly is to lasting steam of carrying in the culinary art chamber 11, ensures to eat the material and is rich in moisture, and hot-blast subassembly can be heated the steam in the culinary art chamber 11 circulation reciprocatingly, and existing effect promotes the water source utilization efficiency, still imitates and promotes culinary art efficiency. Because steam and hot-blast route entering culinary art chamber 11 that pass through different routes for flow rate and the flow direction when steam and hot-blast entering culinary art chamber 11 are all inequality, steam and hot-blast can flow in culinary art chamber 11 chaotically, lead to eating the local region of material can be because of can't appearing the condition of drying and splitting with the steam contact, the local region can be because of can't appearing the slower condition of cooking speed with hot-blast contact, and then lead to eating the material surface each region and appear the condition that degree of cooking and water content are inconsistent, influence culinary art efficiency and quality. For this, an air delivery passage 141 is provided in the driving shaft 14, and the steam generated by the steam generating assembly is delivered into the heat generating chamber 12 through the air delivery passage 141 to be blown out into the cooking chamber 11 by the fan 15. Steam that the steam generation subassembly produced is carried to the chamber 12 that generates heat through locating the gas transmission passageway 141 in the drive shaft 14 in, and carry to the culinary art chamber 11 in the chamber 12 that generates heat after with hot-blast homogeneous mixing, because hot-blast and steam pass through unified route input culinary art chamber 11, ensure that steam and hot-blast each region of being carried to the culinary art chamber 11 uniformly, and then ensure to eat each region of material and hot-blast and steam contact, promote each regional degree of cooking and the moisture content equilibrium of eating material, guarantee the culinary art quality, can also utilize hot-blast to carry out the secondary heating to steam, prevent that steam from influencing the heating tube normal work because of the condensation gathering in the chamber 12 that generates heat.

In this embodiment, the air delivery passage 141 receives the steam from the steam generating assembly and delivers the steam into the heat generating chamber 12, and the rotating fan 15 functions to mix the hot air and the steam and also to blow the mixed air, thereby ensuring that the mixed air can fill the whole cooking chamber 11 and the temperature and humidity of each region of the cooking chamber 11 are kept consistent.

Example two:

compared with the first embodiment, the present embodiment provides a specific oven structure.

As shown in fig. 2, the inner end of the driving shaft 14 is inserted into the heating chamber 12 and fixed to the fan 15, the outer end is fixed to the motor shaft, the air transmission channel 141 is opened along the axial direction of the driving shaft 14, the inner end of the air transmission channel 141 is connected to the heating chamber 12 through the air outlet 143, and the outer end is connected to the steam generating assembly through the air inlet 144. The heating cavity 12 and the steam generator are assembled in a staggered mode, and steam is conveyed through the conveying channel. The gas transmission channel 141 is opened along the axial direction of the driving shaft 14, the distance between the heating cavity 12 and the steam generating component is increased by increasing the length of the gas transmission channel 141, the assembling difficulty is further reduced by increasing the assembling space, and the adjacent components are ensured not to interfere with each other.

When installed, the turbine assembly 16 is first installed on the perforated outer port; then, the inner end of the driving shaft 14 sequentially passes through the turbine assembly 16 and the perforation and then is arranged in the heating cavity 12 in a penetrating way, so that the gas transmission channel 141 is communicated with the heating cavity 12 through the gas outlet 143, and meanwhile, the gas inlet 144 of the gas transmission channel 141 is exposed in the turbine cavity; then, the fan 15 is fixedly connected to the inner end of the driving shaft 14, and the radial projection of the fan 15 and the radial projection of the air outlet 143 are arranged in a staggered manner, so that the air outlet 143 is ensured to be kept unobstructed; finally, the outer end of the driving shaft 14 is coaxially and fixedly connected with the motor shaft.

After the assembly is completed, the driving shaft 14 is fixedly connected with the motor shaft and the fan 15 through two ends respectively, the function of driving the fan 15 to rotate is achieved, the driving shaft is also communicated with the turbine cavity and the heating cavity 12 through the air inlet 144 and the air outlet 143 respectively, the function of conveying steam is achieved, the steam can be conveyed to the middle area of the fan 15, the steam rack and the peripheral airflow of the fan 15 are mixed in the rotating process of the fan 15, mixed gas containing hot air and steam is formed after flowing through the heating tube, and the uniformity of mixing of the steam and the hot air is improved.

In the present embodiment, the fan 15 rotates and forms a low pressure region in the middle thereof, and the air outlet 143 is opened in the low pressure region, so that the fan 15 can extract the steam stored in the turbine chamber through the air delivery passage 141 communicated with the air outlet 143, thereby improving the steam delivery efficiency.

In this embodiment, the heating cavity 12 is disposed behind the cooking cavity 11, and the front wall of the heating cavity 12 is attached to and communicated with the rear wall of the cooking cavity 11, so that the heat generated by the heating cavity 12 can be timely transmitted to the cooking cavity 11.

In this embodiment, the outer end of the driving shaft 14 is sleeved with a turbine assembly 16, an annular turbine chamber (as shown in fig. 3) is arranged in the turbine assembly 16, and after the driving shaft 14 is installed in place, the driving shaft rotatably passes through the turbine assembly 16, so that the gas transmission passage 141 is communicated with the turbine chamber through the gas inlet 144. An annular turbine chamber is provided in the turbine assembly 16, and steam is supplied to the turbine chamber through the vent hole 165, so that the steam in the turbine chamber is extracted through the air inlet 144 by the air supply passage 141. Because the turbine chamber is annular, steam can circulate along the turbine chamber in the circumferential direction, which not only ensures that the air inlet 144 rotating along with the driving shaft 14 can extract steam at any time, but also ensures that the steam in each section of the turbine chamber in the circumferential direction always keeps the same temperature.

In this embodiment, a through hole is formed in a wall surface of the heat generating chamber 12 facing away from the cooking chamber 11, the turbine assembly 16 is disposed at an outer port of the through hole, the turbine assembly 16 includes an inner cover 161 and an outer cover 162, and an inner end portion of the driving shaft 14 sequentially passes through the turbine chamber and the through hole from outside to inside and then is fixedly connected to the fan 15. The outer cover 162 includes an annular side plate and an outer peripheral plate formed by inward recessing of the outer periphery of the side plate, the outer hole is formed in the middle of the outer peripheral plate, and the inner hole is formed in the middle of the inner cover 161. When installed, the inner cover 161 and the outer cover 162 are sequentially axially stacked on the perforated outer port and sequentially fixedly penetrated by the driving shaft 14. After the installation targets in place, the inner edge of periphery board is contradicted on the lateral wall periphery of inner cup 161 for inner cup 161 and dustcoat 162 enclose and close the open annular turbine chamber of formation inner edge, and the inside wall of inner cup 161 matches the laminating with fenestrate outer port periphery, makes perforation, built-in hole and external hole all be located the same axis, makes things convenient for drive shaft 14 to wear to put.

In this embodiment, in order to ensure the sealing performance of the turbine chamber, the inner cover 161 and the outer cover 162 are respectively provided with an inner hole and an outer hole which are coaxially provided with the through hole, the inner hole and the drive shaft 14, and the outer hole and the drive shaft 14 are rotatably sealed by a shaft seal 164, and the periphery of the inner cover 161 and the periphery of the outer cover 162 are clamped and sealed by a seal ring 163. After the inner cover is installed in place, gaps between the inner hole and the driving shaft 14 and gaps between the outer hole and the driving shaft 14 are sealed through shaft seals 164, rotation of the driving shaft 14 is not affected, steam leakage is effectively prevented, meanwhile, sealing is achieved between the periphery of the outer side wall of the inner cover 161 and the inner edge of the outer peripheral plate through clamping sealing rings 163, and steam transmission sealing performance between the vent holes 165 and the air inlet 144 is guaranteed.

In this embodiment, the bottom of the turbine chamber is provided with a vent hole 165 that is in communication with the steam generating assembly. The vent 165 is formed in the bottom of the turbine chamber to facilitate the transfer of steam into the turbine chamber by its own buoyancy.

In this embodiment, in order to ensure the connection strength between the fan 15 and the driving shaft 14, the steam nozzle 142 (as shown in fig. 4) is screwed onto the inner end of the driving shaft 14, the air outlet 143 is opened on the circumferential wall of the steam nozzle 142, the snap spring 145 is fixedly sleeved on the section of the driving shaft 14 between the through hole and the steam nozzle 142, and the fan 15 is sleeved on the outer end of the driving shaft 14 and axially clamped and positioned by the steam nozzle 142 and the snap spring 145. The steam nozzle 142 is screwed on the inner end of the driving shaft 14, and an annular groove for clamping the clamp spring 145 is formed on the outer side wall of the driving shaft 14. When the clamp spring is installed, firstly, the clamp spring 145 is clamped in the annular groove, so that the outer edge of the clamp spring 145 is exposed out of the annular groove; then, the fan 15 is sleeved on the inner end part of the driving shaft 14, so that the fan 15 is abutted on the outer edge of the clamp spring 145; finally, the steam nozzle 142 is screwed onto the inner end of the drive shaft 14, and the fan 15 is axially clamped and positioned by screwing and locking, so that the fan 15 is firmly connected to the drive shaft 14. The fan 15 and the driving shaft 14 are linked in the circumferential direction through a bolt or an eccentric structure.

In the present embodiment, the air outlet 143 is plural and is circumferentially equidistantly provided on the inner end portion of the driving shaft 14, and the air inlet 144 is plural and is circumferentially equidistantly provided on the outer end portion of the driving shaft 14. The air outlets 143 and the air inlets 144 are four in number and equally spaced circumferentially along the drive shaft 14.

It is understood that the heat generating chamber 12 may be disposed on the side wall, bottom or top of the cooking chamber 11 as long as the communication requirement with the cooking chamber 11 is satisfied.

It will be appreciated that the number of the air outlet ports 143 may be two, three, five, etc., as long as they are circumferentially equally spaced on the inner end portion of the drive shaft 14.

It will be appreciated that the number of the air outlet ports 143 may be two, three, five, etc., as long as it is equally circumferentially spaced on the outer end portion of the drive shaft 14.

Other structures and effects of the oven described in this embodiment are all consistent with those of the embodiment, and are not described again.

Example three:

compared with the second embodiment, the present embodiment provides an oven with another structure.

As shown in fig. 5, the turbine chamber is cylindrical, a spiral cleaning brush 166 is disposed in the turbine chamber, the cleaning brush 166 is coaxially and fixedly connected with the driving shaft 14, and after the cleaning brush 166 is mounted in place, the driving shaft 14 drives the cleaning brush 166 to rotate, so that the surface of the cleaning brush 166 is attached to and rubbed with the inner wall of the turbine chamber. The helical cleaning brush 166 can freely rotate in the cylindrical turbine cavity, and can maintain constant friction force with the wall surface of the turbine cavity, so that the cleaning continuity is effectively improved, and the effectiveness of cleaning the wall surface of the turbine cavity can be ensured. The cleaning brush 166 can brush off dirt adhered to the wall surface of the turbine cavity and then sweep the dirt to the vent hole 165 for discharging, and can stir steam to ensure the uniformity of steam heat. The vent hole 165 is formed in the bottom of the turbine cavity, so that dirt in the turbine cavity is conveniently discharged outside through the vent hole 165 under the action of the cleaning brush 166, the cleanliness of steam input into the cooking cavity 11 is guaranteed, and food sanitation is guaranteed.

Other structures and effects of the oven described in this embodiment are the same as those of the second embodiment, and are not described again.

Claims

1. The utility model provides an oven that heating efficiency is high, includes the casing, be equipped with the culinary art chamber in the casing, generate heat chamber and steam generation subassembly, the uncovered that leads to with the external world is seted up to the antetheca in culinary art chamber, be equipped with door plant subassembly in the uncovered, generate heat the intracavity and be equipped with fan and heating tube, the fan orders about the air current and cooks the hot-blast in chamber in order to form the input with the formation heating tube, a serial communication port, be equipped with the motor in the casing, the motor shaft orders about the fan rotation through the drive shaft, be equipped with the gas transmission passageway in the drive shaft, the steam that steam generation subassembly produced is carried to the intracavity that generates heat.

2. The oven with high heating efficiency as claimed in claim 1, wherein the inner end of the driving shaft is inserted into the heating chamber and fixed to the fan, the outer end is fixed to the motor shaft, the air duct is opened along the axial direction of the driving shaft, the inner end of the air duct is connected to the heating chamber through the air outlet, and the outer end is connected to the steam generating assembly through the air inlet.

3. The oven of claim 2, wherein the outer end of the drive shaft is fitted with a turbine assembly, the turbine assembly having an annular turbine chamber therein, the drive shaft rotatably passing through the turbine assembly after being mounted in place such that the gas delivery passage communicates with the turbine chamber through the gas inlet.

4. The oven with high heating efficiency as claimed in claim 3, wherein the wall of the heating chamber facing away from the cooking chamber is provided with a perforation, the turbine assembly is arranged at the outer port of the perforation, the turbine assembly comprises an inner cover and an outer cover, and the inner end of the driving shaft passes through the turbine chamber and the perforation in sequence from outside to inside and then is fixedly connected with the fan.

5. The oven with high heating efficiency as claimed in claim 4, wherein the inner cover and the outer cover are respectively provided with an inner hole and an outer hole which are coaxially arranged with the through hole, and the inner hole and the driving shaft are rotatably sealed through shaft seals; or the periphery of the inner cover and the periphery of the outer cover are clamped and sealed through a sealing ring.

6. The oven of claim 3, wherein the turbine chamber is vented at the bottom to communicate with the steam generating assembly.

7. The oven of claim 3, wherein the turbine chamber is cylindrical, and a cleaning brush is disposed in the turbine chamber and coaxially and fixedly connected to the driving shaft, and when the cleaning brush is mounted in place, the driving shaft drives the cleaning brush to rotate, so that the surface of the cleaning brush is in contact with and rubbed against the inner wall of the turbine chamber.

8. The oven of any one of claims 2 to 7, wherein a steam nozzle is screwed to the inner end of the driving shaft, and the air outlet is formed in a circumferential wall of the steam nozzle.

9. The oven of claim 8, wherein a snap spring is fixedly sleeved on a section of the driving shaft between the through hole and the steam nozzle, and the fan is sleeved on an outer end of the driving shaft and axially clamped and positioned by the steam nozzle and the snap spring.

10. The oven with high heating efficiency according to any one of claims 2 to 7, wherein the air outlet is plural and is opened on the inner end of the driving shaft at equal intervals in the circumferential direction; or the air inlets are a plurality of and are arranged on the outer end part of the driving shaft at equal intervals in the circumferential direction.