CN113154756B - Portable refrigerating device - Google Patents

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 and a first ventilation opening communicated with the refrigerating chamber; the heat preservation device includes: 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 be used for opening and close the thing lid of getting the thing mouth, get the thing lid and rotationally set up in the inside of heat preservation lid, get thing mouth department when heat preservation article reachs, get the thing lid and rotate in order to open.

Description

Portable Freezer

This application is a divisional application with the application number 201811139790.6, the application date is September 28, 2018, and the invention name is "portable refrigeration device".

technical field

The invention belongs to the technical field of household appliances, in particular to a portable refrigeration device.

Background technique

Present portable refrigerating devices, such as car-mounted refrigerators, have the following two problems. One is that although the refrigerating effect of portable refrigerating devices utilizing compressors and evaporators is better, they are too heavy and difficult to carry. One is a portable refrigeration device that relies on the Peltier effect to achieve refrigeration. Although it is small in size and easy to carry and move, its refrigeration effect is relatively poor and it cannot achieve sub-zero refrigeration.

Contents of the invention

The purpose of the present invention is to provide a portable freezer that can not only ensure the convenience of transportation but also ensure the effect of refrigeration and heat preservation.

In order to achieve the purpose of the above invention, one embodiment of the present invention provides a portable refrigeration device, which is characterized in that it includes a refrigeration device and a heat preservation device, the refrigeration device includes a refrigeration chamber and a first vent communicating with the refrigeration chamber, The thermal insulation device includes a thermal insulation chamber and a second vent connected to the thermal insulation chamber, the refrigeration device and the thermal insulation device can be detachably connected, when the refrigeration device and the thermal insulation device are matched together , the first vent and the second vent are oppositely disposed, and the refrigeration chamber and the heat preservation chamber are in fluid communication through the first vent and the second vent.

Compared with the prior art, the low-temperature air formed in the refrigeration chamber of the refrigeration device of the portable refrigeration device provided by the present invention can enter the heat preservation chamber of the heat preservation device through the first vent and the second vent, and the heat preservation chamber The compartment can be used to store insulated items such as food and beverages that need to be frozen. When the user needs to move the heat preservation items to other places, the heat preservation device and the refrigeration device can be separated, and the heat preservation device can be carried separately. In this way, it is not only possible to avoid carrying a relatively heavy refrigeration device, but also it is not necessary to take out the thermal insulation article from the thermal insulation device for the convenience of transportation. Therefore, the convenience of transportation and the effect of refrigeration and heat preservation are guaranteed at the same time.

As a further improvement of an embodiment of the present invention, the second ventilation port includes an air inlet and an air outlet, and the first ventilation port includes an air supply port and an air return port. When the refrigeration device and the heat preservation device are matched together , the air inlet is opposite to the air supply port, and the air outlet is opposite to the return air port. In this way, when the refrigeration device is cooling, the low-temperature air in the refrigeration chamber leaves the refrigeration chamber through the air outlet, and enters the heat preservation chamber from the air inlet, while the high-temperature air in the heat preservation chamber opens the heat preservation chamber through the air outlet. , into the refrigeration chamber from the air return port, thereby realizing the heat exchange between the refrigeration chamber and the heat preservation chamber, and realizing the freezing of the heat preservation items in the heat preservation chamber.

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

As a further improvement of an embodiment of the present invention, the refrigeration device includes a refrigeration box and a compressor, a refrigeration fan, a condenser, and an evaporator arranged in the refrigeration box.

As a further improvement of an embodiment of the present invention, the heat preservation device includes a heat preservation box and a heat preservation cover, the heat preservation chamber is located in the heat preservation box, and the heat preservation cover is used to open and close the heat preservation chamber .

As a further improvement of an embodiment of the present invention, the second vent is located at the bottom of the heat preservation box, and the heat preservation device further includes an air supply housing extending upward from the air inlet. The air supply housing is arranged so that the low-temperature air entering the heat preservation chamber is guided to the upper part of the heat preservation chamber, avoiding being discharged from the air outlet just after entering the heat preservation chamber, thereby improving the cooling efficiency.

As a further improvement of an embodiment of the present invention, the heat preservation device further includes a sealing plug for sealing the air inlet and the air outlet. After the refrigerating device completes cooling of the thermal insulation device, the sealing plug is used to close the air inlet and the air outlet, so that the thermal insulation effect of the thermal insulation device can be improved when the thermal insulation device is transported separately.

As a further improvement of an embodiment of the present invention, the heat preservation cover is further provided with an object access opening passing through the heat preservation cover and an object access cover for opening and closing the object extraction opening. When the user needs to take out the heat preservation items located in the heat preservation chamber, he can only open the pick-up cover instead of opening the whole heat preservation cover, so that the low temperature environment in the heat preservation chamber can be kept from being destroyed quickly, and it is also beneficial to the portable refrigeration device. Reduced energy consumption.

As a further improvement of an embodiment of the present invention, an automatic pick-up device is also provided in the heat preservation box, and the automatic pick-up device is used to push the heat-preservation articles in the heat preservation chamber out of the pick-up port. Setting an automatic pick-up device can facilitate user operation.

As a further improvement of an embodiment of the present invention, the heat preservation device further includes an automatic cover opening device, and when the heat preservation item reaches the object extraction port, the automatic cover opening device automatically opens the object extraction cover. Setting the automatic cover opening device can further facilitate the user's operation.

Description of drawings

Fig. 1 is a perspective view of a portable refrigeration device in an embodiment of the present invention;

Fig. 2 is the front view of the portable refrigeration device shown in Fig. 1;

Fig. 3 is the top view of the heat preservation device of the portable freezer shown in Fig. 1;

Fig. 4 is a perspective view of the refrigeration device of the portable refrigeration device shown in Fig. 1;

Fig. 5 is a perspective view of the heat preservation device shown in Fig. 3;

Fig. 6 is a perspective view of an automatic pick-up device of the portable freezer shown in Fig. 1;

Fig. 7 is an internal schematic diagram of the heat preservation cover of the portable freezer shown in Fig. 1;

Fig. 8 is an external schematic diagram of the thermal insulation cover shown in Fig. 7;

Fig. 9 is an internal schematic diagram of the thermal insulation cover shown in Fig. 7;

Fig. 10 is a cross-sectional view of the air inlet opening and closing device of the portable refrigeration device shown in Fig. 1;

Fig. 11 is a schematic diagram of the air outlet opening and closing device of the portable refrigeration device shown in Fig. 1;

Fig. 12 is a cross-sectional view of the air outlet opening and closing device shown in Fig. 11 .

reference sign

1. Portable freezer

10. Refrigeration device 101, refrigeration chamber 103, first air vent

105. Refrigeration box 107. Compressor 109. Refrigeration fan

111, condenser 113, evaporator 115, water tray

117. Air supply port 119. Return air port 121. Air supply fan

123. Return air fan

20. Heat preservation device

201, insulation chamber 202, operation panel 203, second air vent

205. Insulation box 207. Insulation cover 209. Air inlet

211, air outlet 213, air supply housing 215, air supply hole

217, pick-up port 219, pick-up cover 221, automatic pick-up device

223, lifting seat 225, lifting piece 227, pulley assembly

229, lifting rope 231, lifting ring 233, storage slot

235, spring 237, first pulley 239, second pulley

241, third pulley 243, stop assembly 245, stop block

247, stop spring 249, weight block 251, automatic cover opening device

253, motor 255, transmission gear 257, outer cover

259, interlayer 261, second induction device 263, metal contact body

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 279. Air inlet motor 281. Nut

283. Air outlet sealing plug 285. Air outlet motor 287. Air outlet gear

289, sealing stay rope 291, return spring 293, support column

295, sealing seat 297, sealing groove 299, sealing protrusion

detailed description

The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

It should be understood that terms such as "on", "above", "below", "below", etc. used herein to indicate relative spatial positions are for convenience of description to describe the relative position of an element or feature as shown in the drawings. A relationship to another element or feature. The terms of spatial relative position 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 Fig. 2, an embodiment of the present invention is introduced. In this embodiment, the portable refrigeration device 1 includes a refrigeration device 10 and a heat preservation device 20 . The refrigeration device 10 includes a refrigeration chamber 101 and a first vent 103 communicating with the refrigeration chamber 101 . The heat preservation device 20 includes a heat preservation chamber 201 and a second vent 203 communicating with the heat preservation chamber. Further, the refrigeration device 10 and the heat preservation device 20 can be detachably connected. When the refrigeration device 10 and the heat preservation device 20 are matched together, the first vent 103 and the second vent 203 are arranged oppositely, and the refrigeration chamber 101 and the heat preservation chamber 201 pass through the first vent 103 and the second vent 203. connected. The low-temperature air formed by the refrigeration device 10 in the refrigeration chamber 101 can enter the heat preservation chamber 201 of the heat preservation device 20 through the first vent 103 and the second vent 203 . The thermal insulation chamber 201 can be used to store thermal insulation items, such as food and beverages that need to be frozen. When the user needs to move the thermal insulation items to other places, the thermal insulation device 20 and the refrigeration device 10 can be separated, and the thermal insulation device 20 can be transported separately. In this way, it is possible to avoid carrying the relatively heavy refrigeration device 10 , and it is not necessary to take out the thermal insulation articles from the thermal insulation device 20 for the convenience of transportation. Therefore, the convenience of transportation as well as the effect of refrigeration and heat preservation are guaranteed at the same time.

Further, in some embodiments of the present invention, the refrigeration device 10 includes a refrigeration box 105 and a compressor 107 arranged in the refrigeration box 105, a refrigeration fan 109, a condenser 111, an evaporator 113, and a The water receiving tray 115. The specific principle of cooling the refrigeration device 10 through the compressor 107 , the condenser 111 and the evaporator 113 is a conventional technical means, which will not be repeated here. Of course, the refrigerating device 10 may also be refrigerated in other ways to form low-temperature air in the refrigerating chamber 101 .

Further, as shown in FIG. 3 , the heat preservation device 20 includes a heat preservation box 205 and a heat preservation cover 207 , the heat preservation chamber 201 is located in the heat preservation box 205 , and the heat preservation cover 207 is used to open and close the heat preservation chamber 201 .

Referring to FIG. 3 and FIG. 4 , further, in some embodiments of the present invention, the first vent 103 is located on the top of the refrigeration box 105 and is formed as an opening penetrating through the upper surface of the refrigeration box 105 . In some embodiments of the present invention, the first air vent 103 includes an air supply port 117 and an air return port 119 . The air supply port 117 and the air return port 119 communicate with the cooling chamber 101 . The air supply port 117 and the air return port 119 are located on the top wall of the cooling box 105 . In some embodiments of the present invention, the air outlet 117 is located at the center of the top wall of the cooling box 105 . Referring to FIG. 3 , the second vent 203 is located at the bottom of the heat preservation box 205 . The second vent 203 includes an air inlet 209 and an air outlet 211 . The air inlet 209 and the air outlet 211 communicate with the heat preservation chamber 201 . The air inlet 209 and the air outlet 211 are located on the bottom wall of the heat preservation box 205 . In some embodiments of the present invention, the air inlet 209 is located at the center of the bottom wall of the heat preservation box 205 . The top wall of the refrigeration box 105 is opposite to the bottom wall of the heat preservation box 205 . The air inlet 209 is in fluid communication with the air supply port 117 , and the air outlet 211 is in fluid communication with the air return port 119 . In some embodiments of the present invention, the air supply port 117 is set opposite to the air intake port 209 , and the air outlet 211 is set opposite to the air return port 119 . In some embodiments of the present invention, the number of air outlets 211 and the number of return air outlets 119 are multiple and equal, and the plurality of air outlets 211 and the plurality of air return outlets 119 are arranged opposite to each other. Further, the air outlet 211 is located around the air inlet 209 , and the air return port 119 is located around the air supply port 117 . In other embodiments of the present invention, when the refrigeration device 10 and the heat preservation device 20 are mated together, the air inlet 209 is opposite to the air supply port 117 , and the air outlet 211 is opposite to the air return port 119 . When the refrigerating device 10 is cooling, the low-temperature air in the refrigerating chamber 101 leaves the refrigerating chamber 101 through the air outlet 117 and enters the heat preservation chamber 201 through the air inlet 209 . And the high-temperature air in the heat preservation chamber 201 opens the heat preservation chamber 201 through the air outlet 211, and enters the refrigeration chamber from the air return port 119, thereby realizing the heat exchange between the refrigeration chamber 101 and the heat preservation chamber 201, and realizing the cooling of the heat preservation chamber. Freezing of Insulated Items in Chamber 201. Further, referring to FIG. 4 , in some embodiments of the present invention, the refrigeration device 10 further includes an air supply fan 121 disposed in the air supply port 117 and a return air fan 123 disposed in the air return port 119 . Setting the air supply fan 121 and the return air fan 123 improves the heat exchange efficiency between the refrigeration chamber 101 and the heat preservation chamber 201 . Further, referring to FIG. 1 and FIG. 5 , the thermal insulation device 20 further includes an air supply casing 213 extending upward from the air inlet 209 . The air supply casing 213 is a hollow columnar structure, and a plurality of air supply holes 215 are arranged on its side wall. The air supply housing 213 is provided so that the low-temperature air entering the heat preservation chamber 201 is guided to the upper part of the heat preservation chamber, avoiding being discharged from the air outlet 211 just after entering the heat preservation chamber 201, thereby improving the cooling efficiency. Further, the top of the blower housing 213 is closed. Such setting can promote low-temperature air to be discharged from the plurality of air supply holes 215 on the side wall, thereby further improving the cooling efficiency. Further, the thermal insulation device 20 also includes sealing plugs for sealing the air inlet 209 and the air outlet 211 . After the refrigeration device 10 finishes cooling the heat preservation device 20, the sealing plug is used to close the air inlet 209 and the air outlet 211, so as to improve the heat preservation effect of the heat preservation device 20 when the heat preservation device 20 is transported separately. Of course, the heat preservation device 20 can be used in conjunction with the refrigeration device 10, or can be used alone. When the heat preservation device 20 is used in conjunction with the refrigeration device 10, the heat preservation device 20 is used to freeze items and maintain the low temperature state of the items. When the thermal insulation device 20 is used alone, it can be used to store frozen items and keep their temperature at a lower level, or to store high-temperature items and keep their temperature at a higher level.

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

Referring to FIG. 10 , the air inlet opening and closing device 271 is disposed inside the air supply housing 213 . The air inlet opening and closing device 271 includes an air inlet sealing plug 275, a worm 277 extending upward from the air inlet 209, an air inlet motor 279 driving the worm 277 to rotate, and a nut 281 fixedly connected to the air inlet sealing plug 275, and the nut 281 is sleeved on On the worm screw 277. Balls (not shown) are provided in the nut 281 . When the air inlet needs to be opened, the air inlet motor 279 drives the worm 277 to rotate, and the rotation of the worm 277 makes the nut 281 drive the air inlet sealing plug 275 to move upward along the worm 277 . When the air inlet needs to be closed, the air inlet motor 279 drives the worm 277 to rotate in reverse, and the reverse rotation of the worm 277 makes the nut 281 drive the air inlet sealing plug 275 to move down along the worm 277 until the air inlet sealing plug 275 closes the air inlet 209. Preferably, the height of the worm 277 is higher than the air supply hole 215 . In this way, when the air inlet 209 is opened, the air inlet sealing plug 275 can move upward to a position higher than the air supply hole 215, thereby avoiding the situation that the air inlet sealing plug 275 blocks the air supply hole 215, and improving the flow of low-temperature air Unimpeded, improve the cooling efficiency.

Referring to FIG. 11 and FIG. 12 , the air outlet opening and closing device 273 includes an air outlet sealing plug 283 , an air outlet motor 285 , an air outlet gear 287 , a sealing pull rope 289 and a return spring 291 . The air outlet motor 285 is fixedly arranged on the bottom wall of the heat preservation box 205 . One end of the sealing pull rope 289 is fixed on the sealing plug 283 of the air outlet, and the other end is wound on the gear 287 of the air outlet. One end of the return spring 291 is fixed on the sealing plug 283 of the air outlet, and the other end is fixed on the bottom wall of the heat preservation box 205 . Further, there are two return springs 291 , and the two return springs 291 are respectively located on both sides of the sealing pull cord 289 . In this way, the stability of the air outlet opening and closing device 273 can be improved. Further, the sealing pull cord 289 is supported by nylon material. Further, the air outlet opening and closing device 273 also includes a support column 293 extending upward from the bottom wall of the heat preservation box 205, the sealing pull cord 289 and the return spring 291 are all arranged inside the support column 293, and the air outlet sealing plug 283 can Sliding along the longitudinal extension direction of the support column 293 . Further, the air outlet opening and closing device 273 also includes a sealing seat 295 arranged on the bottom wall of the heat preservation box 205, one of the sealing seat 295 and the air outlet sealing plug 283 is provided with a sealing groove 297, and the other is provided with a sealing protrusion The protrusion 299, the sealing groove 297 and the sealing protrusion 299 can cooperate with each other to close the air outlet 211 sealingly. When the air outlet 211 needs to be opened, the air outlet motor 285 drives the air outlet gear 287 to rotate, and the rotation of the air outlet gear 287 loosens the sealing stay rope 289 wound on the air outlet gear 287, and the air outlet sealing plug 283 It moves upwards along the support 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 in reverse, and the reverse rotation of the air outlet gear 287 makes the sealing stay rope 289 wind up on the air outlet gear, and the air outlet sealing plug 283 is on the air outlet gear. Under the pulling force of the sealing pull cord 289 , it overcomes the elastic force of the return spring 291 and moves downward along the support column 293 until the sealing groove 297 and the sealing protrusion 299 are closely fitted together.

Referring to FIG. 3 , in some embodiments of the present invention, the heat preservation device 20 further includes 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 can control the opening and closing of the ventilation switch device through the operation panel 202 . In some embodiments of the present invention, a temperature sensor (not shown) is also provided in the heat preservation chamber 201 . The temperature sensor is used to obtain 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 Figures 5 and 7, in some embodiments of the present invention, the heat preservation cover 207 is also provided with a pick-up opening 217 passing through the heat preservation cover 207 and a pick-up cover for opening and closing the pick-up opening 219 219. The object extraction port 217 communicates with the heat preservation chamber 201 . After the pick-up cover 219 is set on the heat-preservation cover 207, when the user needs to take out the heat-preservation articles located in the heat-preservation chamber 201, he can only open the pick-up cover 219 instead of opening the whole heat-preservation cover 207, so that the heat preservation chamber can be kept The indoor low-temperature environment is not quickly destroyed, which is also conducive to reducing the energy consumption of the portable refrigeration device 1 .

Further, as shown in FIG. 5 and FIG. 6 , in some embodiments of the present invention, an automatic pick-up device 221 is also provided in the insulated box 205, and the automatic pick-up device 221 is used to remove the objects located in the heat preservation chamber 201 The thermal insulation article is pushed out of the pick-up port 217. Further, in some embodiments of the present invention, the automatic object retrieval device 221 includes a lifting base 223 and a lifting member 225 . The lifting seat 223 is located in the heat preservation chamber 201 . Further, the lifting seat 223 is located below the object extraction port 217 . The lifting member 225 is disposed on the insulated box 205 and is located outside the insulated box 205 . The user can pull the lifting base 223 through the lifting member 225 to make the lifting base 223 rise in the heat preservation chamber 201 until the heat preservation items on the lifting base 223 reach the object picking port 217 . Further, in some embodiments of the present invention, the automatic object fetching device 221 further includes a pulley assembly 227 located in the insulated box 205 . The lifting member 225 includes a lifting cord 229 and a lifting ring 231 . The lifting rope 229 is wound on the pulley assembly 227 , and one end is fixed on the lifting base 223 , and the other end is fixed on the lifting ring 231 . Further, in some embodiments of the present invention, the automatic fetching device 221 also includes a storage slot 233 fixedly arranged in the insulated box body 205 and a spring 235 located in the storage slot 233, and the lifting seat 223 is arranged at one end of the storage slot 233 , 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 disposed on the wall of the storage tank 233 . Such setting is beneficial to improve the passage efficiency of low-temperature air. More specifically, one end of the spring 235 is fixed on the storage slot, and the other end is set toward the lifting seat 233 . 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 storage slot 233 . Wherein, the first pulley 237 is located above one end of the storage slot 233 , that is, above the lifting seat 223 . The third pulley 241 is located above the other end of the storage slot 233 . The third pulley 241 is located at the same height as the first pulley 237 in the vertical direction. The second pulley 239 is located between the first pulley 237 and the third pulley 241 in the horizontal direction, and is located 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 seat 223, and then the lifting rope 229 first goes around the top of the first pulley 237, then goes around the bottom of the second pulley 239, and goes around the top of the third pulley 241. Finally, the other end of the lifting rope 229 passes through the insulation box 205 and is fixed on the lifting ring 231 . The automatic pick-up device provided with the pulley assembly 227 can make the user pull the pulling member 225 more smoothly. Further, in some embodiments of the present invention, there are two lifting ropes 229 and two sets of pulley assemblies 227 . One ends of the two lifting ropes are respectively fixed to two sides of the lifting base 223 , and the two sets of pulley assemblies 227 are respectively located on two sides of the storage slot 233 . Preferably, in some embodiments of the present invention, the lifting rope 229 is made of nylon material. Such setting makes the lifting of the lifting base 223 more stable and reliable. The automatic object fetching device 221 also includes a stop assembly 243 disposed in the storage slot 233 , and the stop assembly includes a stop block 245 located below the lifting seat and a stop spring 247 located below the stop block. When pulling the lifting ring 231, the lifting rope 229 pulls the lifting seat 223 to rise, and the thermal insulation articles on the lifting seat 223 rise thereupon. After the lifting seat 233 rises, the stop block 245 moves upwards under the action of the stop spring 247 , and blocks other thermal insulation items in the storage slot 233 from moving to the bottom of the lifting seat 223 under the action of the spring 235 . After the heat preservation article in the lifting seat 233 is taken away, the lifting seat 223 descends to the top of the stop block 245, and after the stop block 245 is pressed down by overcoming the elastic force of the stop spring 247 under the action of gravity, the storage slot 233 The other thermal insulation articles of the spring 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 includes a weight block 249 . The weight block 249 is preferably made of metal material. Such setting increases the gravity of the lifting seat 223 , ensures that the stop block 245 can be pressed down, and improves the reliability of the automatic object fetching device 221 . Preferably, in some embodiments of the present invention, there are multiple automatic object retrieval devices 221, and multiple object retrieval ports 217, and the automatic object retrieval devices 221 correspond to the object retrieval ports 217 one-to-one. The arrangement of multiple pick-up ports 217 and the automatic pick-up device 221 is beneficial to classify and place heat-insulating items in different storage slots 233, so that users can easily take out the heat-insulating items they want. For example, beverages of the same flavor can be placed in the same storage slot 233, beverages of different flavors can be placed in different storage slots 233, and the user can obtain the beverage he needs by opening the corresponding pick-up port.

Referring to FIG. 5 and FIG. 7 , the heat preservation device 20 further includes an automatic cover opening device 251 . When the thermal insulation item reaches the pick-up port 217, the automatic cover opening device 251 automatically opens the pick-up cover 219. The automatic cover opening device 251 includes a motor 253 and a transmission gear 255 located inside the heat preservation cover 207 . The pick-up cover 219 is rotatably arranged inside the heat preservation cover body 207 , and the motor 253 can drive the pick-up cover 219 to rotate through the transmission gear 255 . The automatic cover opening device 251 also includes a first sensing device (not shown) disposed on the object retrieval cover 219 and a second sensing device disposed at the object retrieval port 217 . The first sensing device is used for sensing that the heat preservation item arrives at the pick-up port 217 , and the second sensing device is used for sensing the heat-preservation item leaving the pick-up port 217 . The heat preservation device 20 further includes a controller 267, and the controller 267 is electrically connected to the motor 252, the first induction device, and the second induction device. When the first sensing device senses that the thermal insulation item reaches the pick-up port 217, the controller controls the motor 252 to drive the pick-up cover 219 to open. When the second sensing device senses that the heat-preserving item has left the pick-up port 217, the pick-up cover 219 is driven to close. In some embodiments of the present invention, the first sensing device includes a strain gauge, and the strain gauge is used to sense the strain value of the heat preservation cover 207 . When the heat preservation item reaches the pick-up port 217, the heat-preservation item contacts the pick-up cover 219, and the force exerted by the heat-preservation item on the pick-up cover 219 makes the pick-up cover 219 strain, and the first sensing device can be used to sense the strain value. The second sensing device is a touch switch, 261. When the thermal insulation item is located at the pick-up port 217, the touch switch 261 is in a conduction state, and when the heat-insulation item leaves the pick-up port 217, the touch switch 261 is in a disconnected 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 pick-up port 217. When the thermal insulation article enters the pick-up port 217, the signal receptor receiver 265 contacts the metal contact 263 under the action of the thermal insulation article, and the touch switch 261 is in a conducting state. , when the insulated article leaves the pick-up port 217, the signal receptor receiver 265 is reset, and the touch switch 261 is in an off state.

Referring to Fig. 9, in some embodiments of the present invention, when there are multiple extraction openings 217, there are multiple extraction covers 219, and each extraction opening is provided with a corresponding extraction cover. Object cover 219. The number of automatic cover-opening devices 251 is also multiple, and the multiple automatic cover-opening devices 251 correspond to the multiple pick-up covers 219 one-to-one, and similarly, also correspond to the multiple pick-up ports 217 one-to-one. Further, in some embodiments of the present invention, there are multiple touch switches 261 , and one object extraction port 217 is provided with two touch switches 261 . The actuation directions of the two actuation switches 261 are perpendicular to each other. Further, when any one of the two touch switches 261 is in a conducting state, the automatic cover opening device 251 keeps the pick-up cover 219 corresponding to the pick-up port 217 in an open state. When the two touch switches 261 are both in the off state, the automatic cover opening device 251 closes the pick-up cover 219 corresponding to the pick-up port 217 . Setting two touch switches 261 is helpful for accurately judging whether there are thermal insulation items at the object extraction port 217, especially for thermal insulation items with small volume.

Further, in some embodiments of the present invention, the area of the object extraction port 217 is less than a quarter of the area of the heat preservation cover 207 . Further, when there are multiple object extraction ports 217 , the area of each object extraction port 217 is less than a quarter of the area of the heat preservation cover 207 . Specifically, the area of the heat preservation cover 207 refers to the surface area of the heat preservation cover 207 used to close the heat preservation chamber 201 . In some embodiments of the present invention, the extraction port 217 is circular. The use of a small-area pick-up port enables the user to maintain the temperature of the heat-insulation chamber to the greatest extent when taking heat-insulated items. And adopting the circular pick-up port can facilitate the user to take the cylindrical article of the beverage bottle.

Further, as shown in FIG. 7 , in some embodiments of the present invention, the number of extraction ports 217 is four. Preferably, the four extraction ports 217 are arranged in the center of the heat preservation cover 207 and are evenly distributed in a 2×2 manner.

Further, referring to FIG. 8 , in some embodiments of the present invention, an outer cover 257 is provided on the outside of the heat preservation cover 207 . The outer cover 257 covers the object taking port 217 from the outside of the heat preservation cover 207 . Setting the outer cover 257 can further improve the thermal insulation effect of the thermal insulation device 20 . And when the pick-up cover 219 has been opened, and the thermal insulation article has not been taken away, the outer cover 257 also prevents the air in the thermal insulation chamber from convecting directly with the outside air. Preferably, when there are multiple object extraction ports 217 , there are also multiple outer covers 257 , which correspond to the object extraction ports 217 one by one.

Further, as shown in FIGS. 5 , 7-9 , in some embodiments of the present invention, the heat preservation cover 207 includes an interlayer 259 , and the access cover 219 is disposed in the interlayer 259 . On the one hand, setting the interlayer 259 is beneficial to the heat preservation effect; on the other hand, the pick-up cover 219 can be arranged therein, which is beneficial to the appearance of the heat preservation cover 207 . Further, in some embodiments of the present invention, the motor 253 and the transmission gear 255 are also arranged in the interlayer 259 . Such setting is beneficial to protect the automatic cover opening device 251 from being damaged by human beings, and is also beneficial to the appearance of the heat preservation cover 207 . Further, in some embodiments of the present invention, both the first sensing device and the second sensing device are located in the interlayer 259 . With such an arrangement, the reliability and safety between the various electrically connected components can be improved.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.

Claims (11)

1. A portable refrigerating device, characterized in that it comprises a refrigerating device and a thermal insulation device, the refrigerating device comprises a refrigerating chamber and a first vent communicating with the refrigerating chamber, and the thermal insulation device comprises a thermal insulation chamber and a communication The second ventilation opening of the heat preservation chamber, the first ventilation opening and the second ventilation opening are arranged oppositely, and the refrigeration chamber and the heat preservation chamber pass through the first ventilation opening and the second ventilation opening. The vents are optionally in fluid communication; the heat preservation device includes: a heat preservation box and a heat preservation cover, the heat preservation chamber is located in the heat preservation box, and the heat preservation cover is used to open and close the heat preservation chamber; The heat preservation cover is also provided with a pick-up opening through the heat preservation cover and a pick-up cover for opening and closing the pick-up opening. The pick-up cover is rotatably arranged inside the heat preservation cover. Arriving at the pick-up port, the pick-up cover is rotated to open, the second vent includes an air outlet, the heat preservation device includes an air outlet opening and closing device, and the air outlet opening and closing device includes an air outlet sealing plug, an air outlet The air outlet motor, the air outlet gear, the sealing pull cord and the return spring, the air outlet motor is fixedly arranged on the bottom wall of the heat preservation box, one end of the sealing pull rope is fixed on the air outlet sealing plug, and the other end is wound on the outlet On the air outlet gear, the rotation of the air outlet gear loosens the sealing pull rope wound on the air outlet gear, and the air outlet sealing plug moves upward under the elastic force of the return spring to open the air outlet, and the reaction of the air outlet gear Rotate to make the sealing stay rope wind up on the air outlet gear, the air outlet seal plug under the tension of the seal stay rope, overcome the elastic force of the return spring and move down along the support column to close the air outlet. 2. The portable refrigeration device according to claim 1, wherein the second vent includes an air inlet, the heat preservation device includes an air inlet opening and closing device, and the air inlet opening and closing device includes an air inlet sealing plug , the worm extending upward from the air inlet, the air inlet motor driving the worm to rotate, and the nut fixedly connected with the air inlet sealing plug, the nut is sleeved on the worm, and the rotation of the worm makes the nut drive the air inlet sealing plug upward along the worm Or move down to open or close the air inlet. 3. The portable freezer according to claim 1, wherein the opening and closing device for the air outlet further comprises a support column extending upward from the bottom wall of the insulated box, and the sealing pull cord and the return spring are both provided Inside the support column, the air outlet sealing plug slides along the longitudinal extension direction of the support column. 4. The portable freezer according to claim 1, wherein the opening and closing device for the air outlet also includes a sealing seat arranged on the bottom wall of the insulated box, and one of the sealing seat and the sealing plug of the air outlet One is provided with a sealing groove, and the other is provided with a sealing protrusion, and the sealing groove and the sealing protrusion cooperate with each other to hermetically close the air outlet. 5. The portable refrigerating device according to claim 1, wherein an automatic pick-up device is also provided in the insulated box, the automatic pick-up device includes a lifting seat and a lifting member, and the lifting seat is located in the heat preservation box. Below the pick-up port in the chamber, the lifting member is arranged on the insulation box and is located outside the insulation box. The lifting member pulls the lifting seat so that the lifting seat rises in the heat preservation chamber until the lifting seat The thermal insulation items on the top reach the extraction port. 6. The portable freezer according to claim 5, wherein the automatic pick-up device also includes a pulley assembly located in the insulated box, the lifting member includes a lifting rope and a lifting ring, and the lifting The stay rope is wound on the pulley assembly, and one end is fixed on the lifting seat, and the other end is fixed on the lifting ring. 7. The portable freezer according to claim 6, wherein the automatic pick-up device also includes a storage slot fixedly arranged in the insulated box and a spring located in the storage slot, and the lifting seat is arranged in the storage slot At one end, the spring is arranged at the other end of the storage slot. 8. The portable freezer according to claim 7, wherein the pulley assembly comprises a first pulley, a second pulley and a third pulley, and the first pulley, the second pulley and the third pulley are fixedly arranged On the storage trough, the first pulley is located above one end of the storage trough, the third pulley is located above the other end of the storage trough, and the third pulley is located at the same height as the first pulley in the vertical direction , the second pulley is located between the first pulley and the third pulley in the horizontal direction, and one end of the lifting rope is fixed on the lifting seat. The bottom of the pulley is bypassed, and then the top of the third pulley is bypassed, and finally the other end of the pull rope passes through the insulation box and is fixed on the pull ring. 9. The portable refrigerating device according to claim 7, wherein there are two lifting ropes, two sets of pulley assemblies, one end of the two lifting ropes is respectively fixed to both sides of the lifting seat, Two sets of pulley assemblies are respectively located on both sides of the storage slot. 10. The portable refrigerating device according to claim 7, wherein the automatic fetching device further comprises a stopper assembly arranged in the storage slot, and the stopper assembly includes a stopper block and a The stop spring located under the stop block, when pulling the lifting ring, the lifting rope pulls the lifting seat up, and the heat preservation article on the lifting seat rises accordingly. After the lifting seat rises, the stop block is on the stop spring Under the action of the spring, it moves upwards, and blocks other thermal insulation items in the storage tank from moving to the bottom of the lifting seat under the action of the spring. 11. The portable freezer according to claim 10, wherein the lifting base further includes a weight block, the lifting base descends to the top of the stop block, and overcomes the force of the stop spring under the action of gravity and the assistance of the weight block. After the elastic force presses down the stop block, other thermal insulation items in the storage slot move to the lifting seat under the action of the spring.

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