CN113218124A

CN113218124A - Portable refrigerating device

Info

Publication number: CN113218124A
Application number: CN202110457947.5A
Authority: CN
Inventors: 殷宝振; 王朋朋; 徐忠歌
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-08-06
Anticipated expiration: 2038-09-28
Also published as: CN109708364B; CN109708364A; CN113218123B; CN113218123A; CN113218124B

Abstract

The invention discloses a portable refrigerating device, which comprises a refrigerating device and a heat preservation device, wherein the refrigerating device comprises a refrigerating chamber, an air supply opening and an air return opening which are communicated with the refrigerating chamber, the heat preservation device comprises a heat preservation chamber, an air inlet and an air outlet which are communicated with the heat preservation chamber, the air inlet is communicated with the air supply opening in a fluid mode, the air outlet is communicated with the air return opening in a fluid mode, the heat preservation device further comprises an air inlet opening and closing device, the air inlet opening and closing device comprises an air inlet sealing plug, a worm which extends upwards from the air inlet, an air inlet motor which drives the worm to rotate and a nut which is fixedly connected with the air inlet sealing plug, the nut is sleeved on the worm, and the rotation of the worm enables the nut to drive the air inlet to move.

Description

Portable refrigerating device

The application is a divisional application with the application number of 201811139761.X, the application date of 2018, 09 and 28 months and the invention name of '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, the ventilation of a refrigerating chamber and a heat-preserving chamber is not smooth, and the refrigerating efficiency is influenced.

Disclosure of Invention

The invention aims to provide a portable refrigerating device which is smooth in ventilation and high in refrigerating efficiency.

In order to achieve the above object, an embodiment of the present invention provides a portable refrigeration device, including a refrigeration device and a thermal insulation device, where the refrigeration device includes a refrigeration chamber, and an air supply outlet and an air return inlet communicated with the refrigeration chamber, the thermal insulation device includes a thermal insulation chamber, and an air inlet and an air outlet communicated with the thermal insulation chamber, the air inlet is in fluid communication with the air supply outlet, and the air outlet is in fluid communication with the air return inlet.

Compared with the prior art, the refrigeration chamber and the heat preservation chamber of the portable refrigeration device provided by the invention are communicated through a plurality of channels, and can form a circulating air path from the air supply outlet to the air inlet, from the air inlet to the air outlet, from the air outlet to the air return inlet, and from the air return inlet to the air supply outlet, so that the refrigeration chamber and the heat preservation chamber are smoothly ventilated, and the refrigeration efficiency is improved.

As a further improvement of an embodiment of the present invention, the refrigeration device includes a refrigeration box, the heat preservation device includes a heat preservation box, the air inlet and the air outlet are located on a bottom wall surface of the heat preservation box, the air supply outlet and the air return inlet are located on a top wall surface of the refrigeration box, and the top wall surface of the refrigeration box and the bottom wall surface of the heat preservation box are arranged oppositely.

As a further improvement of an embodiment of the present invention, the air inlet is located at the center of the bottom wall surface, the air supply outlet is located at the center of the top wall surface, and the air supply outlet and the air inlet are arranged opposite to each other. The arrangement is favorable for low-temperature control to be dispersed into the heat-insulation chamber, and the refrigeration efficiency is improved.

As a further improvement of an embodiment of the present invention, the number of the air outlets and the number of the air return inlets are both multiple and equal, and the air outlets and the air return inlets are arranged in a one-to-one opposite manner.

As a further improvement of an embodiment of the present invention, the air outlet is located around the air inlet, and the air return inlet is located around the air supply inlet. The arrangement is favorable for low-temperature control to be dispersed into the heat-insulation chamber, and the refrigeration efficiency is improved.

As a further improvement of an embodiment of the present invention, the cooling device includes a supply fan provided in the supply port and a return fan provided in the return port. The arrangement of the air supply fan and the air return fan improves the heat exchange efficiency between the refrigeration cavity and the heat preservation cavity.

As a further improvement of an embodiment of the present invention, the heat preservation device further includes an air supply housing extending upward from the air inlet. The air supply shell is arranged to lead low-temperature air entering the heat preservation cavity to be guided to the upper part of the heat preservation cavity, so that the low-temperature air is prevented from being discharged from the air outlet just after entering the heat preservation cavity, and the refrigerating efficiency is improved.

As a further improvement of an embodiment of the present invention, the air supply casing has a hollow columnar structure, and a plurality of air supply holes are provided in a side wall of the air supply casing.

As a further improvement of an embodiment of the present invention, a top of the air supply casing is closed. The arrangement can promote the low-temperature air to be discharged from the plurality of air supply holes on the side wall, thereby further improving the refrigeration efficiency.

As a further improvement of an embodiment of the present invention, the heat retaining device further includes a sealing plug for sealing the air inlet and the air outlet.

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. Refrigeration device 101, refrigeration chamber 103, first vent

105. Refrigeration box 107, compressor 109 and refrigeration fan

111. Condenser 113, evaporator 115 and water pan

117. Air supply outlet 119, air return inlet 121 and air supply fan

123. Return air fan

20. Heat preservation device

201. Insulation chamber 202, operation panel 203, second ventilation opening

205. Insulation box 207, insulation cover 209 and air inlet

211. Air outlet 213, air supply casing 215, air supply hole

217. Get thing mouth 219, get thing lid 221, automatic load handling device

223. Lifting seat 225, lifting piece 227 and pulley assembly

229. Lifting rope 231, lifting ring 233 and storage groove

235. Spring 237, first pulley 239, second pulley

241. Third pulley 243, stop assembly 245 and stop block

247. Stop spring 249, weight 251, automatic uncapping device

253. Motor 255, drive gear 257 and outer cover

259. Interlayer 261, touch switch 263 and metal contact

265. Signal receptor receiver 267, controller 269, vias

271. Air inlet opening and closing device 273, air outlet opening and closing device 275 and air inlet sealing plug

277. Worm 279, air inlet motor 281, nut

283. Air outlet sealing plug 285, air outlet motor 287 and air outlet gear

289. Sealing pull rope 291, return spring 293 and support column

295. Sealing seat 297, sealing groove 299 and sealing bulge

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 is in a conducting state when the heat preservation object is located at the

object taking opening

217, and 261 is in a disconnecting state when the heat preservation object leaves the object taking opening 217. 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. The utility model provides a portable refrigerating plant, its characterized in that, includes refrigerating plant and heat preservation device, refrigerating plant includes refrigeration cavity and intercommunication the supply-air outlet and the return air inlet of refrigeration cavity, the heat preservation device includes heat preservation cavity and intercommunication the air intake and the air outlet of heat preservation cavity, the air intake with supply-air outlet fluid intercommunication, the air outlet with return air inlet fluid intercommunication, the heat preservation device still includes air intake opening and closing device, air intake opening and closing device includes the air intake sealing plug, upwards extends the worm from the air intake, drive the rotatory air intake motor of worm and with air intake sealing plug fixed connection's nut, the nut cover is established on the worm, and the rotation of sealing plug worm makes the nut drive the air intake upwards or the downstream in order to open or close along the worm the air intake.

2. The portable freezing device of claim 1, wherein the heat retaining device further comprises an air supply housing extending upward from the air inlet, the air supply housing is a hollow cylindrical structure and has a top portion closed, a plurality of air supply holes are formed in a side wall of the air supply housing, and the air inlet opening/closing device is disposed in the air supply housing.

3. The portable freezing device of claim 2, wherein the air inlet is located at the center of the bottom wall surface of the heat preservation box body, the air supply outlet is located at the center of the top wall surface of the refrigeration box body, and the air supply outlet and the air inlet are arranged oppositely.

4. The portable freezing device of claim 3, wherein the number of the air outlets and the number of the air return inlets are equal to each other, the air outlets and the air return inlets are arranged in a one-to-one manner, the air outlets are arranged around the air inlet, the air return inlets are arranged around the air supply outlet, and fans are arranged in the air supply outlet and the air return inlets.

5. The portable freezing apparatus of claim 1, wherein the warming apparatus comprises: the heat insulation box comprises a heat insulation box body and a heat insulation cover body, wherein the heat insulation cavity is positioned in the heat insulation box body, and the heat insulation cover body is used for opening and closing the heat insulation cavity; still be provided with on the heat preservation lid and link up the thing mouth of getting of heat preservation lid and get the thing lid, it rotationally sets up in the inside of heat preservation lid in order to open and close to get the thing mouth to get the thing lid.

6. The portable freezing device of claim 5, wherein the heat-insulating cover body comprises an interlayer, the fetching cover is arranged in the interlayer, the motor drives the fetching cover to rotate through the transmission gear, and the motor and the transmission gear are both positioned in the heat-insulating cover body.

7. The portable freezing device of claim 5, wherein the thermal insulation box is further provided with an automatic object taking device, the automatic object taking device comprises a lifting seat and a lifting piece, the lifting seat is located below the object taking opening in the thermal insulation chamber, the lifting piece is arranged on the thermal insulation box and located outside the thermal insulation box, and the lifting seat is pulled by the lifting piece to enable the lifting seat to ascend in the thermal insulation chamber until the thermal insulation objects on the lifting seat reach the object taking opening.

8. The portable freezing device as claimed in claim 7, wherein the automatic fetching device further comprises a pulley assembly located in the thermal insulation box, the pulling member comprises a pulling rope and a pulling ring, the pulling rope is wound around the pulley assembly, and one end of the pulling rope is fixed on the lifting seat, and the other end of the pulling rope is fixed on the pulling ring.

9. The portable freezing device of claim 7, wherein the automatic object-taking device further comprises an object-placing groove fixedly arranged in the heat-preservation box body and a spring positioned in the object-placing groove, the lifting seat is arranged at one end of the object-placing groove, and the spring is arranged at the other end of the object-placing groove.

10. The portable freezing device of claim 5, wherein the heat preservation device further comprises an automatic cover opening device, the automatic cover opening device comprises a first sensing device arranged on the object taking cover and a second sensing device arranged at the object taking opening, the first sensing device is used for sensing that the heat preservation object reaches the object taking opening, and the second sensing device is used for sensing that the heat preservation object leaves the object taking opening.

11. The portable freezing device of claim 10, wherein the first sensing device comprises a strain gauge for sensing a strain value of the insulation cover, when the insulation object reaches the object-taking opening, the insulation object contacts the object-taking cover, and the object-taking cover is strained by the action force of the insulation object on the object-taking cover; the second sensing device is a touch switch, when the heat preservation object is positioned at the object taking opening, the touch switch is in a conducting state, and when the heat preservation object leaves the object taking opening, the touch switch is in a disconnecting state.

12. The portable freezing device of claim 11, wherein the number of the fetching openings is plural, and each fetching opening is provided with two touch switches, and the touch action directions of the two touch switches are perpendicular to each other.