CN109708367B

CN109708367B - Portable refrigerating device

Info

Publication number: CN109708367B
Application number: CN201811140879.4A
Authority: CN
Inventors: 殷宝振; 孟亮; 冯衬
Original assignee: Qingdao Haier Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2020-12-25
Anticipated expiration: 2038-09-28
Also published as: CN109708367A

Abstract

The invention discloses a portable refrigerating device, which comprises a heat preservation device, wherein the heat preservation device comprises: the heat preservation box body, the heat preservation lid body and be located the internal heat preservation cavity of insulation can, the heat preservation lid body is used for opening and closing the heat preservation cavity, and the heat preservation device is still including getting the thing mouth and being used for opening and closing of intercommunication heat preservation cavity and getting the thing lid of getting the thing mouth, and the heat preservation device is still including the automatic device of uncapping, and when the heat preservation article reachd gets thing mouth department, the automatic device of uncapping was opened and is got the thing. The portable refrigerating device provided by the invention is provided with the automatic cover opening device, is convenient and fast to operate, does not need manual operation of a user, avoids a long-time opening state of the heat-insulating cover body caused by complex operation, and is beneficial to maintaining the low-temperature environment of the heat-insulating cavity.

Description

Portable refrigerating device

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a portable refrigerating device.

Background

At present, when a user uses a portable refrigerating device, such as a vehicle-mounted refrigerator, if food or beverage in the portable refrigerating device needs to be taken out, the door cover needs to be manually opened and taken out, and the door cover is manually closed, so that the operation is very inconvenient. And because the operation is complicated, the time for opening the door cover is long, the low-temperature environment is not favorably maintained, the refrigeration effect on food and beverage is influenced, and the energy consumption is not favorably saved if the low-temperature environment is restored by refrigeration again.

Disclosure of Invention

The invention aims to provide a portable refrigerating device which is convenient for a user to take and place food and beverage.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a portable refrigeration apparatus including a heat retaining device, the heat retaining device including: the heat preservation device comprises a heat preservation box body, a heat preservation cover body and a heat preservation cavity located in the heat preservation box body, wherein the heat preservation cover body is used for opening and closing the heat preservation cavity, the heat preservation device further comprises a communicating object taking opening of the heat preservation cavity and an object taking cover used for opening and closing the object taking opening, the heat preservation device further comprises an automatic cover opening device, when the heat preservation object reaches the object taking opening, the automatic cover opening device is automatically opened to take the object taking cover.

Compared with the prior art, the portable refrigerating device provided by the invention is provided with the automatic cover opening device, is convenient and fast to operate, does not need manual operation of a user, avoids a long-time opening state of the heat-insulating cover body caused by complex operation, and is beneficial to maintaining the low-temperature environment of the heat-insulating cavity.

As a further improvement of an embodiment of the present invention, the automatic lid opening device includes a motor and a transmission gear which are located inside the heat preservation lid body, the fetching lid is rotatably disposed inside the heat preservation lid body, and the motor can drive the fetching lid to rotate through the transmission gear. With such an arrangement, the opening and closing of the access cover can be realized with a simple structure.

As a further improvement of an embodiment of the present invention, the heat-insulating cover body includes an interlayer, and the motor, the transmission gear, and the heat-insulating cover body are all disposed in the interlayer.

As a further improvement of the embodiment of the present invention, a first sensing device is disposed on the article taking cover, a second sensing device is disposed at the article taking opening, the first sensing device is used for sensing that the heat preservation article reaches the article taking opening, and the second sensing device is used for sensing that the heat preservation article leaves the article taking opening.

As a further improvement of an embodiment of the present invention, the first and second sensing devices are both located within the interlayer. The automatic cover opening device is protected from being damaged by people, and the appearance of the heat preservation cover body is also facilitated.

As a further improvement of an embodiment of the present invention, the first sensing device is a strain gauge for sensing a strain value of the heat-insulating cover.

As a further improvement of the embodiment of the present invention, the second sensing device is a touch switch, when the heat-insulating article is located at the article taking opening, the touch switch is in a conducting state, and when the heat-insulating article leaves the article taking opening, the touch switch is in a disconnecting state.

As a further improvement of an embodiment of the present invention, the number of the tact switches is plural, and two tact switches are provided for one fetching port. The arrangement of the two touch switches is beneficial to accurately judging whether heat-insulating articles exist at the article taking opening, especially for heat-insulating articles with small size.

As a further improvement of an embodiment of the present invention, the directions of the touch actions of the two touch switches of the same fetching port are perpendicular to each other. By the arrangement, the accuracy of judgment can be further improved.

As a further improvement of an embodiment of the present invention, when any one of the two tact switches is in a conducting state, the automatic lid opening device keeps the fetching lid in an open state. By the arrangement, the accuracy of judgment can be further improved.

Drawings

FIG. 1 is a perspective view of a portable freezer in accordance with one embodiment of the invention;

FIG. 2 is a front view of the portable freezer shown in FIG. 1;

FIG. 3 is a top plan view of the warmer unit of the portable freezer shown in FIG. 1;

FIG. 4 is a perspective view of a refrigeration unit of the portable freezer shown in FIG. 1;

FIG. 5 is a perspective view of the temperature maintenance device shown in FIG. 3;

FIG. 6 is a perspective view of the automatic load handling device of the portable freezer shown in FIG. 1;

FIG. 7 is a schematic view of the interior of the insulated cover of the portable freezer shown in FIG. 1;

FIG. 8 is an external view of the insulated cover shown in FIG. 7;

FIG. 9 is a schematic view of the interior of the insulated cover shown in FIG. 7;

fig. 10 is a sectional view of an air inlet opening and closing device of the portable refrigerating apparatus shown in fig. 1;

fig. 11 is a schematic view of an outlet opening and closing device of the portable refrigerating apparatus shown in fig. 1;

fig. 12 is a sectional view of the outlet opening/closing device shown in fig. 11.

Reference numerals

1. Portable refrigerating device
			10. Refrigerating device	101. Refrigeration chamber	103. First ventilation opening
105. Refrigeration box	107. Compressor with a compressor housing having a plurality of compressor blades	109. Refrigeration fan
			111. Condenser	113. Evaporator with a heat exchanger	115. Water pan
117. Air supply outlet	119. Return air inlet	121. Air supply fan
			123. Return air fan
20. Heat preservation device
			201. Heat preservation chamber	202. Operation panel	203. Second vent
205. Thermal insulation box	207. Heat preservation cover body	209. Air inlet
			211. Air outlet	213. Air supply shell	215. Air supply hole
217. Fetching port	219. Fetching cover	221. Automatic object taking device
			223. Lifting seat	225. Lifting piece	227. Pulley assembly
229. Lifting rope	231. Lifting ring	233. Storage groove
			235. Spring	237. First pulley	239. Second pulley
241. Third pulley	243. Stop assembly	245. Stop block
			247. Stop spring	249. Weighting block	251. Automatic cover opening device
253. Electric machine	255. Transmission gear	257. Outer cover
			259. Sandwich layer	261. Touch switch	263. Metal contact
265. Signal receptor receiver	267. Controller	269. Through hole
			271. Air inlet opening and closing device	273. Air outlet opening and closing device	275. Air inlet sealing plug
277. Worm screw	279. Air inlet motor	281. Nut
			283. Air outlet sealing plug	285. Air outlet motor	287. Air outlet gear
289. Sealing pull rope	291. Reset spring	293. Support column
			295. Sealing seat	297. Sealing groove	299. Sealing projection

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

It will be understood that terms used herein such as "upper," "above," "lower," "below," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

Referring to fig. 1 and 2, an embodiment of the present invention will be described. In the present embodiment, the portable refrigeration apparatus 1 includes a refrigeration apparatus 10 and a heat retention apparatus 20. The refrigeration apparatus 10 includes a refrigeration chamber 101 and a first vent 103 communicating with the refrigeration chamber 101. The heat preservation device 20 comprises a heat preservation chamber 201 and a second ventilation opening 203 communicated with the heat preservation chamber. Further, the refrigerating apparatus 10 and the warming apparatus 20 are detachably connected. When the refrigeration device 10 and the temperature keeping device 20 are coupled together, the first ventilation opening 103 and the second ventilation opening 203 are arranged oppositely, and the refrigeration chamber 101 and the temperature keeping chamber 201 are in fluid communication through the first ventilation opening 103 and the second ventilation opening 203. The low-temperature air formed in the refrigerating chamber 101 by the refrigerating apparatus 10 can enter the keeping warm chamber 201 of the keeping warm apparatus 20 through the first ventilation opening 103 and the second ventilation opening 203. While the insulating chamber 201 may be used to store insulating items such as food and beverages that require freezing. When the user needs to move the heat-insulating article to another place, the heat-insulating device 20 and the refrigerating device 10 can be separated, and the heat-insulating device 20 can be transported separately. In this way, it is not necessary to transport the refrigerator 10, which is relatively heavy, and to take out the thermal insulation articles from the thermal insulation device 20 for easy transportation. Therefore, the convenience of transportation and the refrigeration and heat preservation effects are ensured at the same time.

Further, in some embodiments of the present invention, the refrigeration apparatus 10 includes a refrigeration tank 105, and a compressor 107, a refrigeration fan 109, a condenser 111, an evaporator 113, and a water tray 115 disposed below the condenser 111 inside the refrigeration tank 105. The specific principle of the refrigeration device 10 refrigerating through the compressor 107, the condenser 111 and the evaporator 113 is conventional technology means, and is not described herein. Of course, the refrigeration device 10 can also refrigerate in other ways to form low-temperature air in the refrigeration chamber 101.

Further, referring to fig. 3, the thermal insulation apparatus 20 includes a thermal insulation box 205 and a thermal insulation cover 207, wherein the thermal insulation chamber 201 is located in the thermal insulation box 205, and the thermal insulation cover 207 is used for opening and closing the thermal insulation chamber 201.

Referring to fig. 3 and 4, further, in some embodiments of the present invention, the first vent 103 is located at the top of the refrigeration case 105 and is formed as an opening penetrating the upper surface of the refrigeration case 105. In some embodiments of the invention, the first vent 103 includes a supply air opening 117 and a return air opening 119. The supply port 117 and the return port 119 communicate with the refrigerating chamber 101. The supply port 117 and the return port 119 are located on the top wall surface of the refrigeration case 105. In some embodiments of the invention, the supply air outlet 117 is located in the center of the top wall surface of the refrigeration cabinet 105. And as shown in fig. 3, the second ventilation opening 203 is located at the bottom of the thermal insulation case 205. The second ventilation opening 203 includes an intake opening 209 and an outlet opening 211. The air inlet 209 and the air outlet 211 are communicated with the heat preservation chamber 201. The air inlet 209 and the air outlet 211 are located on the bottom wall surface of the heat preservation box 205. In some embodiments of the present invention, the intake vent 209 is located in the center of the bottom wall surface of the thermal container 205. The top wall surface of the refrigeration case 105 and the bottom wall surface of the thermal case 205 are disposed opposite to each other. The intake 209 is in fluid communication with the supply air outlet 117 and the outlet 211 is in fluid communication with the return air outlet 119. In some embodiments of the present invention, the supply air outlet 117 and the intake air inlet 209 are disposed opposite to each other, and the exhaust air outlet 211 and the return air inlet 119 are disposed opposite to each other. In some embodiments of the present invention, the number of the air outlets 211 and the number of the air returns 119 are equal, and the air outlets 211 and the air returns 119 are arranged in a one-to-one manner. Further, the air outlet 211 is located around the air inlet 209, and the air return 119 is located around the air supply outlet 117. In other embodiments of the present invention, when the refrigeration device 10 and the thermal insulation device 20 are mated together, the air inlet 209 is opposite to the air supply outlet 117, and the air outlet 211 is opposite to the air return outlet 119. When the refrigeration device 10 is refrigerating, the low-temperature air in the refrigeration chamber 101 leaves the refrigeration chamber 101 through the air outlet air supply outlet 117 and enters the heat preservation chamber 201 from the air inlet 209. And the high-temperature air in the heat-insulating chamber 201 passes through the air outlet 211 to open the heat-insulating chamber 201, and enters the refrigerating chamber from the air return port 119, so that the heat exchange between the refrigerating chamber 101 and the heat-insulating chamber 201 is realized, and the freezing of heat-insulating articles in the heat-insulating chamber 201 is realized. Further, referring to fig. 4, in some embodiments of the present invention, the cooling device 10 further includes a supply fan 121 disposed in the supply outlet 117 and a return fan 123 disposed in the return outlet 119. The provision of the supply fan 121 and the return fan 123 improves the heat exchange efficiency between the refrigerating compartment 101 and the warming compartment 201. Further, referring to fig. 1 and 5, the thermal insulation device 20 further includes an air supply housing 213 extending upward from the air inlet 209. The blower case 213 has a hollow columnar structure, and a plurality of blower holes 215 are provided in a side wall thereof. The air supply shell 213 is arranged to lead the low-temperature air entering the heat preservation chamber 201 to be guided to the upper part of the heat preservation chamber, so that the air is prevented from being discharged from the air outlet 211 immediately after entering the heat preservation chamber 201, and the refrigeration efficiency is improved. Further, the top of the blower housing 213 is closed. This arrangement can promote the discharge of the low-temperature air from the plurality of blow holes 215 in the side wall, thereby further improving the cooling efficiency. Further, the heat retaining device 20 further includes sealing plugs for sealing the air inlet 209 and the air outlet 211. After the refrigeration device 10 completes the refrigeration of the heat preservation device 20, the sealing plugs are used for sealing the air inlet 209 and the air outlet 211, so that the heat preservation effect of the heat preservation device 20 is improved when the heat preservation device 20 is transported independently. Of course, the thermal insulation device 20 may be used in combination with the refrigeration device 10 or may be used alone. When the warmer 20 is used in conjunction with the cooler 10, the warmer 20 is used to freeze the item and maintain the item in a cold state. When the heat retaining device 20 is used alone, the device can be used for storing frozen articles and keeping the temperature of the frozen articles at a lower level, and can also be used for storing high-temperature articles and keeping the temperature of the high-temperature articles at a higher level.

Referring to fig. 10-12, in some embodiments of the present invention, the warming device 20 further includes a ventilation opening and closing device for automatically opening and closing the second ventilation opening 203. The ventilation opening and closing device comprises an air inlet opening and closing device and an air outlet opening and closing device. The intake opening and closing device 271 is used to open and close the intake port 209, and the outlet opening and closing device 273 is used to open and close the outlet port 211.

Referring to fig. 10, the intake opening/closing device 271 is provided inside the air blowing casing 213. The intake opening and closing device 271 includes an intake sealing plug 275, a worm 277 extending upward from the intake 209, an intake motor 279 driving the worm 277 to rotate, and a nut 281 fixedly connected to the intake sealing plug 275, wherein the nut 281 is sleeved on the worm 277. The nut 281 is provided therein with balls (not shown). When it is desired to open the inlet, the inlet motor 279 rotates the worm 277, and the rotation of the worm 277 causes the nut 281 to move the inlet sealing plug 275 up along the worm 277. When it is desired to close the inlet, the inlet motor 279 drives the worm 277 to rotate in a reverse direction, and the reverse rotation of the worm 277 causes the nut 281 to move the inlet sealing plug 275 downward along the worm 277 until the inlet sealing plug 275 closes the inlet 209. Preferably, the worm 277 is higher than the blow hole 215. So set up, when opening air intake 209, air intake sealing plug 275 can upwards move to the position that is higher than supply-air hole 215 to avoided air intake sealing plug 275 to block up the condition of supply-air hole 215, improved the mobile smoothness of low temperature air, improved refrigeration efficiency.

Referring to fig. 11 and 12, the outlet opening and closing device 273 includes an outlet sealing plug 283, an outlet motor 285, an outlet gear 287, a sealing cord 289, and a return spring 291. The air outlet motor 285 is fixedly arranged on the bottom wall surface of the heat preservation box 205. The sealing rope 289 has one end fixed to the outlet sealing plug 283 and the other end wound around the outlet gear 287. One end of the return spring 291 is fixed to the air outlet sealing plug 283, and the other end is fixed to the bottom wall surface of the heat preservation box 205. Further, the number of the return springs 291 is two, and the two return springs 291 are respectively located on both sides of the seal rope 289. This improves the stability of the air outlet opening/closing device 273 in operation. Further, the seal stay 289 is supported by a nylon material. Further, the outlet opening and closing device 273 further includes a support column 293 extending upward from the bottom wall of the thermal insulation box 205, the sealing rope 289 and the return spring 291 are both disposed inside the support column 293, and the outlet sealing plug 283 can slide along the longitudinal extension direction of the support column 293. Further, the outlet opening and closing means 273 further includes a sealing seat 295 provided on the bottom wall surface of the thermal container 205, one of the sealing seat 295 and the outlet sealing plug 283 is provided with a sealing groove 297, and the other is provided with a sealing projection 299, and the sealing groove 297 and the sealing projection 299 may cooperate with each other to hermetically close the outlet 211. When the outlet 211 needs to be opened, the outlet motor 285 drives the outlet gear 287 to rotate, the rotation of the outlet gear 287 releases the sealing rope 289 wound around the outlet gear 287, and the outlet sealing plug 283 moves upwards along the supporting column 293 under the elastic force of the return spring 291. When the air outlet 211 needs to be closed, the air outlet motor 285 drives the air outlet gear 287 to rotate reversely, the reverse rotation of the air outlet gear 287 enables the sealing rope 289 to wind on the air outlet gear, and the air outlet sealing plug 283 overcomes the elastic force of the return spring 291 to move downwards along the supporting column 293 under the pulling force of the sealing rope 289 until the sealing groove 297 and the sealing protrusion 299 are tightly matched together.

Referring to fig. 3, in some embodiments of the invention, the thermal device 20 further comprises an operation panel 202, a control panel, and a battery. The control panel is electrically connected with the battery, the operation panel and the ventilation opening and closing device. In some embodiments of the present invention, the user may control the opening and closing of the ventilation opening and closing device through the operation panel 202. In some embodiments of the present invention, a temperature sensor (not shown) is also disposed within the incubation chamber 201. The temperature sensor is used for acquiring the temperature value in the heat preservation chamber 201. The ventilation opening and closing device opens and closes the air outlet 211 according to the temperature value in the heat preservation chamber 201.

Referring to fig. 5 and 7, in some embodiments of the present invention, the heat-insulating cover 207 is further provided with an article taking opening 217 penetrating the heat-insulating cover 207 and an article taking cover 219 for opening and closing the article taking opening 217. The fetching port 217 is communicated with the heat preservation chamber 201. After the object taking cover 219 is arranged on the heat preservation cover body 207, when a user needs to take out the heat preservation object located in the heat preservation chamber 201, the object taking cover 219 can be only opened without opening the whole heat preservation cover body 207, so that the low-temperature environment in the heat preservation chamber can be kept from being rapidly destroyed, and the reduction of the energy consumption of the portable refrigerating device 1 is facilitated.

Further, referring to fig. 5 and 6, in some embodiments of the present invention, an automatic picking device 221 is further disposed in the thermal insulation box 205, and the automatic picking device 221 is configured to push the thermal insulation object located in the thermal insulation chamber 201 out of the picking port 217. Further, in some embodiments of the present invention, the automatic picking apparatus 221 includes a lifting base 223 and a pulling member 225. The elevating base 223 is located in the heat-insulating chamber 201. Further, the lifting seat 223 is located below the fetching hole 217. The pulling member 225 is provided on the heat-insulating case 205 and is located outside the heat-insulating case 205. The user can pull the lifting seat 223 through the lifting piece 225, so that the lifting seat 223 ascends in the heat preservation chamber 201 until the heat preservation objects on the lifting seat 223 reach the fetching opening 217. Further, in some embodiments of the present invention, the automatic picking device 221 further comprises a pulley assembly 227 located within the insulated housing 205. The pull member 225 includes a pull string 229 and a pull ring 231. The lifting rope 229 is wound around the pulley assembly 227, and has one end fixed to the lifting base 223 and the other end fixed to the lifting ring 231. Further, in some embodiments of the present invention, the automatic picking device 221 further includes a storage slot 233 fixedly disposed in the thermal insulation box 205 and a spring 235 disposed in the storage slot 233, wherein the lifting seat 223 is disposed at one end of the storage slot 233, and the spring 235 is disposed at the other end of the storage slot 233. In some embodiments of the present invention, a plurality of through holes 269 are provided on the walls of the storage compartment 233. The arrangement is favorable for improving the passing efficiency of low-temperature air. More specifically, one end of the spring 235 is fixed to the storage groove, and the other end is disposed toward the lifting seat 223. Further, in some embodiments of the present invention, the pulley assembly 227 includes a first pulley 237, a second pulley 239, and a third pulley 241. The first pulley 237, the second pulley 239 and the third pulley 241 are all fixedly arranged on the object placing groove 233. The first pulley 237 is located above one end of the storage trough 233, i.e. above the lifting seat 223. The third pulley 241 is located above the other end of the storage tub 233. The third pulley 241 is located at the same height in the vertical direction as the first pulley 237. The second pulley 239 is located between the first pulley 237 and the third pulley 241 in the horizontal direction and below the first pulley 237 and the third pulley 241 in the vertical direction. One end of the lifting rope 229 is fixed on the lifting base 223, then the lifting rope 229 firstly passes over the first pulley 237, then passes under the second pulley 239, and passes over the third pulley 241, and finally the other end of the lifting rope 229 passes through the insulated box 205 and is fixed on the lifting ring 231. The automatic picking device provided with the pulley assembly 227 can make the user more smooth when pulling the pull-up member 225. Further, in some embodiments of the present invention, there are two lift cords 229 and two sets of pulley assemblies 227. One end of each of the two lifting ropes is fixed to both sides of the lifting base 223, and the two sets of pulley assemblies 227 are respectively located at both sides of the storage groove 233. Preferably, in some embodiments of the present invention, the lift cords 229 are made of a nylon material. So set up for lift seat 223's lift is more steady reliable. The automatic material taking device 221 further includes a stopping assembly 243 disposed in the object placing groove 233, and the stopping assembly includes a stopping block 245 positioned below the lifting seat and a stopping spring 247 positioned below the stopping block. When the lifting ring 231 is pulled, the lifting rope 229 pulls the lifting base 223 to ascend, and the heat insulating article on the lifting base 223 ascends. After the lifting seat 223 is lifted, the stop block 245 moves upwards under the action of the stop spring 247, and other heat-insulating objects in the storage tank 233 are stopped from moving to the lower part of the lifting seat 223 under the action of the spring 235. After the thermal insulation articles in the lifting seat 223 are taken away, the lifting seat 223 descends to the upper side of the stopping block 245, the stopping block 245 is pressed down by overcoming the elastic force of the stopping spring 247 under the action of gravity, and then other thermal insulation articles in the article holding groove 233 move into the lifting seat 223 under the action of the spring 235. More preferably, in some embodiments of the present invention, the lifting base 223 further comprises a weight 249. The weight 249 is preferably made of a metal material. With the arrangement, the gravity of the lifting seat 223 is increased, the stop block 245 can be pressed down, and the reliability of the automatic fetching device 221 is improved. Preferably, in some embodiments of the present invention, the number of the automatic object taking devices 221 is multiple, the number of the object taking ports 217 is multiple, and the automatic object taking devices 221 and the object taking ports 217 correspond to each other one by one. The plurality of object taking openings 217 and the automatic object taking device 221 are arranged, so that the heat-preservation objects can be placed in different object placing grooves 233 in a classified mode, and a user can take out the heat-preservation objects. For example, beverages with the same taste may be placed in the same storage tank 233, beverages with different tastes may be placed in different storage tanks 233, and a user may obtain a desired beverage by opening the corresponding access opening.

Referring to fig. 5 and 7, the warming device 20 further includes an automatic cover opening device 251. When the heat-preservation object reaches the fetching opening 217, the automatic uncovering device 251 automatically opens the fetching cover 219. The automatic cover opening device 251 comprises a motor 253 and a transmission gear 255 which are positioned inside the heat-insulating cover body 207. The fetching cover 219 is rotatably disposed inside the heat insulation cover 207, and the motor 253 can drive the fetching cover 219 to rotate through the transmission gear 255. The automatic cap opening device 251 further includes a first sensing device (not shown) provided on the access cap 219 and a second sensing device provided at the access port 217. The first sensing device is used for sensing that the heat-preservation object reaches the object taking opening 217, and the second sensing device is used for sensing that the heat-preservation object leaves the object taking opening 217. The temperature keeping device 20 further includes a controller 267, wherein the controller 267 is electrically connected to the motor 253, the first sensing device and the second sensing device. When the first sensing device senses that the heat-preservation object reaches the fetching port 217, the controller controls the motor 253 to drive the fetching cover 219 to open. When the second sensing device senses that the thermal insulation object leaves the fetching opening 217, the fetching cover 219 is driven to close. In some embodiments of the present invention, the first sensing device comprises a strain gauge for sensing a strain value of the thermal cover 207. When the heat preservation object reaches the fetching opening 217, the heat preservation object is in contact with the fetching cover 219, the acting force of the heat preservation object on the fetching cover 219 enables the fetching cover 219 to generate strain, and the first sensing device can be used for sensing the strain value. The second sensing device is a touch switch 261, when the heat-insulating article is located at the article taking opening 217, the touch switch 261 is in a conducting state, and when the heat-insulating article leaves the article taking opening 217, the touch switch 261 is in a disconnecting state. Further, referring to fig. 9, the tact switch 261 includes a metal contact 263 and a signal receptor receiver 265. Wherein the signal receptor receiver 265 is electrically connected to the controller 267. The signal receptor receiver 265 is located in the fetching port 217, when the heat preservation object enters the fetching port 217, the trigger switch 261 is in a conducting state when the signal receptor receiver 265 is contacted with the metal contact 263 under the action of the heat preservation object, and when the heat preservation object leaves the fetching port 217, the signal receptor receiver 265 is reset, and the trigger switch 261 is in a disconnecting state.

Referring to fig. 9, in some embodiments of the present invention, when the number of the fetching ports 217 is multiple, the number of the fetching covers 219 is also multiple, and each fetching port is provided with a corresponding fetching cover 219. The number of the automatic cap opening devices 251 is also plural, and the plural automatic cap opening devices 251 correspond to the plural access caps 219 one by one, and similarly, correspond to the plural access ports 217 one by one. Further, in some embodiments of the present invention, the number of the tact switches 261 is plural, and two tact switches 261 are provided for one fetching port 217. The directions of the touch actions of the two touch switches 261 are perpendicular to each other. Further, when any one of the two tact switches 261 is in a conducting state, the automatic lid opening device 251 keeps the fetching lid 219 corresponding to the fetching port 217 in an open state. When both the two tact switches 261 are in the off state, the automatic lid opening device 251 closes the fetching lid 219 corresponding to the fetching port 217. The two touch switches 261 are provided to facilitate accurately determining whether there is a thermal insulation object at the object taking port 217, especially for a thermal insulation object with a small size.

Further, in some embodiments of the present invention, the area of the access opening 217 is less than one-fourth of the area of the heat-insulating cover 207. Further, when the plurality of article taking openings 217 are provided, the area of each article taking opening 217 is smaller than one fourth of the area of the heat-insulating cover 207. Specifically, the area of the thermal insulation cover 207 refers to the surface area of the thermal insulation cover 207 for closing the thermal insulation chamber 201. In some embodiments of the invention, the access opening 217 is circular. The small-area fetching port enables a user to keep the temperature of the heat preservation chamber to the maximum degree when taking the heat preservation object. And the cylindrical article of the beverage bottle can be conveniently taken by a user by adopting the round article taking opening.

Further, referring to fig. 7, in some embodiments of the invention, the number of the fetching ports 217 is four. Preferably, four fetching holes 217 are arranged in the center of the heat-insulating cover 207 and are uniformly distributed in a 2 × 2 manner.

Further, referring to fig. 8, in some embodiments of the present invention, an outer cover 257 is further disposed outside the heat-insulating cover 207. The outer cover 257 covers the access opening 217 from the outside of the thermal cover 207. The arrangement of the outer cover 257 can further improve the heat preservation effect of the heat preservation device 20. The cover 257 also prevents air in the insulated chamber from directly convecting with the outside air when the access cover 219 is opened and the insulated item has not been removed. Preferably, when the article taking opening 217 is plural, the number of the outer covers 257 is plural, and the outer covers correspond to the article taking openings 217 one by one.

Further, referring to fig. 5, 7-9, in some embodiments of the present invention, the insulated cover 207 includes a compartment 259, and the access cover 219 is disposed in the compartment 259. The interlayer 259 is beneficial to the heat preservation effect, and the fetching cover 219 can be arranged in the interlayer, so that the appearance of the heat preservation cover 207 is improved. Further, in some embodiments of the present invention, motor 253 and drive gear 255 are also disposed in interlayer 259. By such arrangement, the automatic cover opening device 251 is protected from being damaged by people, and the heat preservation cover body 207 is also attractive. Further, in some embodiments of the present invention, both the first sensing device and the second sensing device are located within the interlayer 259. By such an arrangement, reliability and safety between the respective electrically connected components can be improved.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A portable refrigeration apparatus, comprising a thermal insulation device, the thermal insulation device comprising: the heat preservation device comprises a heat preservation box body, a heat preservation cover body and a heat preservation cavity arranged in the heat preservation box body, wherein the heat preservation cover body is used for opening and closing the heat preservation cavity, the heat preservation device further comprises a fetching opening communicated with the heat preservation cavity and a fetching cover used for opening and closing the fetching opening, the heat preservation device further comprises an automatic uncovering device, when heat preservation objects reach the fetching opening, the automatic uncovering device automatically opens the fetching cover, the automatic uncovering device comprises a motor and a transmission gear which are arranged inside the heat preservation cover body, the fetching cover is rotatably arranged inside the heat preservation cover body, the motor can drive the fetching cover to rotate through the transmission gear, a first induction device is arranged on the fetching cover, a second induction device is arranged at the fetching opening, the first induction device is used for inducing the heat preservation objects to reach the fetching opening, the second sensing device is used for sensing that the heat-preservation object leaves the fetching opening.

2. The portable freezing apparatus of claim 1, wherein the insulated cover includes an interlayer, and the motor, the transmission gear, and the insulated cover are disposed in the interlayer.

3. The portable freezing device of claim 2 wherein said first sensing device and said second sensing device are both located within said interlayer.

4. The portable freezing device of claim 1 wherein the first sensing device is a strain gauge for sensing strain in the insulated lid.

5. The portable freezing device of claim 1 wherein the second sensing device is a trigger switch, the trigger switch is in an on state when the insulation item is located at the article-taking opening, and the trigger switch is in an off state when the insulation item is away from the article-taking opening.

6. The portable freezing device of claim 5 wherein the number of said tact switches is plural, and two said tact switches are provided for one said fetching port.

7. The portable freezer of claim 6, wherein the two trigger switches of the same access opening are oriented in directions perpendicular to each other.

8. The portable freezer of claim 6, wherein the automatic lid opener maintains the access lid in an open position when either of the two tact switches is in an on state.