WO2020088122A1

WO2020088122A1 - Automatic box lunch machine

Info

Publication number: WO2020088122A1
Application number: PCT/CN2019/105697
Authority: WO
Inventors: 王滨; 陈昆嵘; 赖航; 廖欣; 叶志坚; 曾定付
Original assignee: 天津友创宝科技有限公司
Priority date: 2018-10-31
Filing date: 2019-09-12
Publication date: 2020-05-07
Also published as: SG10201909254TA; CN109598850A; CN109598850B

Abstract

Provided is an automatic box lunch machine 1000, comprising: a cabinet 500; and a heating device which is provided in the cabinet 500, and comprises a first liquid guide tank group 300a and a second liquid guide tank group 300b. The first liquid guide tank group 300a and the second liquid guide tank group 300b each comprises multiple liquid guide tanks 310; a connecting tube 330 is provided between every two adjacent liquid guide tanks 310 in the first liquid guide tank group 300a/the second liquid guide tank group 300b; each of the first liquid guide tank group 300a and the second liquid guide tank group 300b is provided with a valve assembly 320; the valve assembly 320 comprises several plugs 321, a pull rod 322, and a power element 323; each liquid guide tank 310 is provided with a liquid outlet 316 at a position corresponding to the upper end of the connecting tube 330; the plugs 321 are provided at the liquid outlets 316; the liquid guide tank is provided with a support plate 311; the power element 323 is disposed on the support plate 311 and connected to the pull rod 322; each plug 321 is connected to the pull rod 322. By grouping the multiple liquid guide tanks 310, the liquid discharge processes of the first liquid guide tank group 300a/the second liquid guide tank group 300b are independent of each other, and thus, the efficiency can be improved.

Description

Automatic lunch machine

Technical field

[0001] The present invention relates to the technical field of vending machines, and particularly to an automatic lunch box machine.

Background technique

[0002] A multi-layer storage rack is provided in the box lunch machine, and a liquid-conducting tank is provided for each layer of the storage-rack, and the liquid-conducting tank contains hot water. When it is necessary to heat the bento, the bento placed in the storage rack is immersed in hot water. After a period of time, the heating is completed, and the hot water in the liquid guide tank is discharged through the drain line. 5 See that in the technology, the drainage process of each heat sink is independent of each other, the pipeline structure is complex, and the assembly is difficult.

Summary of the invention

technical problem

Solution to the problem

Technical solution

[0003] Based on this, it is necessary to provide an automatic lunch box machine for the problem of complicated drainage pipes.

[0004] An automatic lunch box machine including:

[0005] cabinet;

[0006] A storage rack is provided in the box, the storage rack includes a plurality of support mechanisms arranged at intervals, the support mechanism includes a plurality of storage units for placing a lunch box;

[0007] The heating device is provided in the box, and includes a first liquid guide tank group and a second liquid guide tank group, and the first liquid guide tank group and the second liquid guide tank group each include a plurality of guides A liquid tank, the liquid guide tank and the supporting mechanism are provided in a one-to-one correspondence, and each two adjacent liquid guide tanks in the first liquid guide tank group / the second liquid guide tank group are provided with A connecting pipe, the first liquid guide tank group and the second liquid guide tank group are respectively provided with a valve assembly, the valve assembly includes a plurality of plugs, a pull rod and a power element, and each of the liquid guide tanks corresponds to the connection The upper end of the tube is provided with a liquid outlet, the plug is provided at the liquid outlet, the liquid guide groove is provided with a support plate, and the power element is provided on the support plate and connected to the pull rod Each plug is connected to the pull rod, and the power element can drive the plug to open or block the liquid outlet [0008] The above-mentioned automatic lunch box machine divides all the liquid-conducting tanks into the first liquid-conducting tank group and the second liquid-conducting tank group. A connecting pipe is provided between adjacent liquid guiding grooves, and when the plug opens the liquid outlet, the liquid guiding grooves can communicate with each other. The valve assembly in the first liquid guide tank group or the second liquid guide tank group can realize the synchronous control of the discharge processes of the multiple liquid guide tanks, and the efficiency is high. In addition, by grouping a plurality of liquid guiding tanks, the liquid discharging processes of the first liquid guiding tank group or the second liquid guiding tank group are independent of each other, which can effectively improve the efficiency.

[0009] In one embodiment, the liquid guide tank includes a liquid inlet and an overflow tube, the liquid inlet is provided on the support plate, the overflow tube is provided on the bottom wall of the liquid guide tank, In the first liquid guide tank group and / or the second liquid guide tank group, the overflow pipe of one of the liquid guide tanks is in communication with the liquid inlet of another adjacent liquid guide tank.

[0010] In one of the embodiments, the automatic lunch box machine further includes a liquid storage tank and a pump body, the liquid storage tank is provided under the heating device for containing a heat conductive medium, in the first guide In the liquid tank group / the second liquid guide tank group, the liquid inlet of the liquid guide tank at the top is connected to the suction pipe of the pump body, the overflow tube of the liquid guide tank at the bottom and the liquid storage tank Connected.

[0011] In one embodiment, the liquid guide groove includes a bottom wall, a first annular side wall and a second annular side wall provided on the bottom wall, the liquid guide groove is provided with a partition, The partition plate is connected to the first annular side wall, the bottom wall and the second annular side wall in sequence, and the liquid inlet and the overflow pipe are respectively located on both sides of the partition plate.

[0012] In one of the embodiments, the automatic lunch box machine further includes a lifting device for driving the storage rack up and down, when the lifting device drives the storage rack down, the supporting mechanism can Carrying the packed lunch down so that the packed lunch is immersed in the corresponding liquid-conducting tank; when the lifting device drives the storage rack to rise, the supporting mechanism can carry the packed lunch up so that the packed lunch leaves the place The liquid guide tank is opposite to the outlet.

[0013] In one embodiment, the lifting device includes a first fixed plate, a movable plate, a second fixed plate, a number of support columns, a screw and a drive assembly, the first fixed plate is provided in the box, The plurality of support columns are provided on the first fixed plate, the movable plate is sleeved on the support columns, the second fixed plate is connected to an end of the support column away from the first fixed plate, the The screw rod is rotatably connected with the first fixed plate and the second fixed plate respectively and is screwed with the movable plate. The screw rotates to move the movable plate up and down along the support column, the movable plate is connected with a lifting rod, and the lifting rod is connected to the storage rack.

[0014] In one of the embodiments, the lifting device further includes a detection assembly, the detection assembly includes two sensing elements and a detection bar, the detection bar is provided on the movable board, two of the sensing elements Provided on the first fixed plate and the second fixed plate respectively, the detection strip can follow the movement of the movable plate and enter the detection area of the sensing element.

[0015] In one embodiment, the lifting device further includes a limit block, the limit block is provided on the first fixed plate and / or the second fixed plate and is sleeved on the support column When the movable board moves into position, the limit block can form a limit to the movable board.

[0016] In one of the embodiments, the automatic lunch box machine further includes:

[0017] a rotating device, including a motor and a transmission assembly, the motor can drive the storage rack to rotate through the transmission assembly;

[0018] A detection device includes a detection element and an induction disc, the detection element includes a first sensor and a second sensor disposed at intervals, the induction disc can rotate synchronously with the storage rack, and the induction disc is provided along the circumferential direction A plurality of positioning teeth, each of the positioning teeth is corresponding to one of the storage units, the positioning teeth include a first positioning tooth and a second positioning tooth, the first positioning tooth can be used by the first sensor and One of the second sensors detects that the second positioning tooth can be simultaneously detected by the first sensor and the second sensor:

[0019] The number of the first positioning teeth is 1, the number of the second positioning teeth is multiple, in the initial state, the first positioning teeth are located in the first sensor or the second sensor Within the detection area, and one of the storage units is aligned with the take-out opening; or,

[0020] The number of the first positioning teeth is plural, the number of the second positioning teeth is 1, in the initial state, the second positioning teeth are located at the same time as the first sensor and the second In the detection area of the sensor, and one of the storage units is aligned with the take-out opening.

[0021] In one embodiment, the transmission assembly includes a first transmission member and a second transmission member that cooperate with each other

The output end of the motor is connected to the first transmission member, the second transmission member is coaxially arranged with the storage rack, the induction plate is provided with a plurality of arc-shaped grooves, and a plurality of connection members pass through the The arc-shaped slot is used to fix the induction disk to the second transmission member. Beneficial effects of invention

Brief description of the drawings

BRIEF DESCRIPTION

[0022] FIG. 1 is a schematic structural view of an automatic lunch box machine in an embodiment;

[0023] FIG. 2 is a schematic structural view of a heating device in the automatic lunch box shown in FIG. 1;

[0024] FIG. 3 is a schematic diagram of the structure of the liquid guiding groove in the heating device shown in FIG. 2;

[0025] FIG. 4 is a schematic structural view of the lifting device in the automatic lunch box shown in FIG. 1;

[0026] FIG. 5 is a schematic structural view of a rotating device and a detecting device in the automatic lunch box shown in FIG. 1;

[0027] FIG. 6 is a schematic structural view of a first embodiment of an induction disc in the detection device shown in FIG. 5;

7 is a schematic structural view of a second embodiment of an induction disc in the detection device shown in FIG. 5.

Invention Example

Embodiments of the invention

[0029] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to related drawings. The drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more comprehensive.

[0030] It should be noted that when an element is referred to as being “fixed” to another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to another element or may be centered at the same time. As used herein, the term "inner",

The expressions "outer", "left", "right" and the like are for illustrative purposes only, and are not meant to be the only way of implementation.

[0031] Please refer to FIG. 1, FIG. 2 and FIG. 3, an automatic lunch box 1000 includes a storage rack 100, a heating device 300 and a box 500. The box 500 is provided with a plurality of outlets 510, and the storage rack 100 is provided in the box 500. The storage rack 100 has a multi-layer support mechanism 20, and the support mechanism 20 is used to place a box lunch 200. The heating device 300 is provided in the box 500. The heating device 300 includes a first liquid guide tank group 300a and a second liquid guide tank group 300b, and the first liquid guide tank group 300a and the second liquid guide tank group 300b each include a plurality of The liquid-conducting tank 310 is provided in a one-to-one correspondence with the supporting mechanism 20. The liquid-conducting tank 310 contains a thermally conductive medium for heating the lunch box 200. The first liquid guide tank group 300a / Each two adjacent liquid guide grooves 310 in the second liquid guide groove group 300b are provided with a connecting pipe 330, and the first liquid guide groove group 300a and the second liquid guide groove group 300b are respectively provided with a valve assembly 320, a valve The assembly 320 includes a plurality of plugs 321, a pull rod 322 and a power element 323. A connecting tube 330 is provided between each two adjacent liquid guiding grooves 310, and each liquid guiding groove 310 is opened corresponding to the position of the upper end of the connecting tube 330 There is a liquid outlet 316, a plug 321 is provided in the liquid outlet 316 of each liquid guide groove 310, the liquid guide groove 310 is provided with a support plate 311, a power element 323 is provided on the support plate 311 and is connected to the rod 322, All of the 321 are connected to the pull rod 322, and the power element 323 can drive the plug 321 to open or block the liquid outlet 316.

[0032] The above-mentioned automatic lunch box 1000 divides all the liquid guiding tanks 310 into a first liquid guiding tank group 300a and a second liquid guiding tank group 300b, within the first liquid guiding tank group 300a or the second liquid guiding tank group 300b By providing a connecting tube 330 between two adjacent liquid guiding grooves 310, when the plug 321 opens the liquid outlet 316, the liquid guiding grooves 310 can communicate with each other. The valve assembly 320 in the first liquid guide tank group 300a or the second liquid guide tank group 300b can realize the synchronous control of the discharging processes of the multiple liquid guide tanks 310. By grouping the liquid guiding tanks 310, the liquid discharging processes of the first liquid guiding tank group 300a or the second liquid guiding tank group 300b are independent of each other, which can effectively improve the efficiency.

[0033] The power element 323 may be a cylinder or a stepper motor. The liquid outlet 316 is provided on the bottom wall of the liquid guiding groove 310 to ensure that the liquid guiding medium in the liquid guiding groove 310 can be discharged cleanly.

[0034] The liquid guide tank 310 each includes a liquid inlet 313 and an overflow pipe 314, the liquid inlet 313 is provided in the support plate 311, the overflow pipe 314 is provided in the bottom wall of the liquid guide tank 310, in the first liquid guide tank group 300a / In the second liquid guide tank group 300b, the overflow pipe 314 of one of the liquid guide tanks 310 communicates with the inlet 313 of the other liquid guide tank 310 provided adjacently. For example, when it is necessary to heat the lunch 200 corresponding to the first liquid-conducting tank group 300a, a heat-conducting medium is injected into the liquid-conducting tank 310 at the top in the first liquid-conducting tank group 300a. Under the action of gravity, the heat-conducting medium passes through The overflow pipe 314 flows into the next liquid guiding groove 310. Since the first liquid guide tank group 300a and the second liquid guide tank group 300b are independent of each other, the liquid injection operation can be performed simultaneously, and the heating efficiency is improved.

[0035] The automatic lunch box 1000 further includes a liquid storage tank (not shown) and a pump body, the liquid storage tank is provided under the heating device 300, is used to contain a heat transfer medium, in the first liquid guide tank group 300a / second guide In the liquid tank group 300b, the liquid inlet 313 of the liquid guide tank 310 at the top is connected to the pumping pipe of the pump body, and the heat transfer medium in the liquid storage tank is pumped into the liquid guide tank 310 at the top through the pump body, and The liquid guiding groove 310 at the top gradually flows into other liquid guiding grooves 310.

[0036] The overflow pipe 314 of the liquid guiding tank 310 at the bottom communicates with the liquid storage tank. The first liquid guide tank group 300a / the second liquid guide After the lunch 200 in the tank group 300b is heated, the power element 323 drives the plug 321 to open the liquid outlet 316 through the pull rod 322, and the heat transfer medium can flow from the liquid guiding groove 310 located at the upper layer to the liquid guiding groove 310 located at the lower layer The overflow pipe 314 of the liquid guiding tank 310 flows to the liquid storage tank. In other words, the thermally conductive medium can be recovered from the liquid guiding tank 310 into the liquid storage tank, and the thermally conductive medium can be recycled.

[0037] Referring to FIG. 3, the support plate 311 is provided with a sleeve 312, and the plug 321 is passed through the sleeve 312. The plug 321 has a tubular structure, and a flange 321a is formed at the end of the plug 321. On the one hand, when the plug 321 blocks the liquid outlet, the flange 321a bears against the inner wall of the liquid guide groove 310 to prevent the leakage of the heat transfer medium. When the plug 321 moves upward, the flange 321a bears against the end of the sleeve 312, forming a stop for the plug 321. In addition, the setting of the sleeve 312 forms a limit to the movement process of the plug 321, while ensuring that the plug 321 remains stable during the movement.

[0038] Further, the screw penetrates the plug 321 and is screwed to the pull rod 322, so that the plug 321 and the pull rod 322 are fixedly connected.

[0039] The liquid guiding groove 310 includes a bottom wall 310a, a first annular side wall 310b and a second annular side wall 310b provided on the bottom wall 310a, the liquid guiding groove 310 is provided with a partition 315, and the partition 315 is sequentially connected to The first annular side wall 310b, the bottom wall 310a and the second annular side wall 310c, the liquid inlet 313 and the overflow pipe 314 are located on both sides of the partition 315. The above-mentioned setting method makes the heat conducting medium 310 located at the upper layer full, and then the heat conducting medium can flow into the liquid conducting tank 310 located at the lower layer, ensuring that each heat conducting tank 310 can be injected with a sufficient amount of heat conducting medium to the lunch box 200 Perform heating.

[0040] In some embodiments, the side wall of the overflow pipe 314 is provided with an overflow hole, please refer to FIG. 3, the liquid guide tank 310 further includes an overflow plate 317, and the overflow plate 317 is sequentially connected to the second annular side wall 310c and the bottom wall 310a And the partition plate 315, and the height of the overflow plate 317 is lower than the height of the partition plate 315, and when the liquid level in the liquid guiding groove 310 exceeds the overflow plate 317, the heat transfer medium can flow into the liquid guiding groove 310 located at the lower layer, the overflow plate The setting of 317 ensures that sufficient heat conduction medium is stored in the liquid guiding tank 310 to heat the lunch box. In other embodiments, the height of the overflow pipe 314 is designed to be lower than the height of the partition plate 315. At this time, the overflow pipe 314 does not need to be provided with an overflow hole. When the liquid level in the liquid guide tank 310 exceeds the overflow pipe 314, the heat transfer medium It can flow into the lower surface of the liquid guiding tank 310.

[0041] Referring to FIGS. 1 and 4, the automatic lunch box 1000 further includes a lifting device 400. The lifting device 400 includes a first fixed plate 410, a movable plate 420, a second fixed plate 430, a plurality of support columns 440, a screw 450, and a driving assembly 460, the first fixed plate 410 is disposed in the box, and the plurality of support columns 440 are disposed in the first Fixed plate 410, movable plate 420 Set on the support column 440, the second fixing plate 430 is connected to the end of the support column 440 away from the first fixing plate 410. The driving assembly 460 is used to drive the screw 450 to rotate to move the movable plate 420 along the support column 440. The movable plate 420 is connected to a lifting rod 470, and the lifting rod 470 is connected to the storage rack 100. The lifting device 400 is provided on the top of the box. Please refer to FIGS. 3 and 10 together. The central portion of the storage rack 100 is provided with a central shaft 10. The lifting rod 470 is fixedly connected to the central shaft 10.

[0042] Specifically, the driving assembly 460 drives the screw 450 to rotate. Since the screw 450 and the movable plate 420 are threaded, the screw 450 can drive the movable plate 420 to move up and down, and the storage rack 100 is connected to the movable plate 420 through the lifting rod 470 When the movable plate 420 moves up and down, accordingly, the storage rack 100 moves up or down. The support column 440 is used to fix the relative positions of the first fixing plate 410 and the second fixing plate 430, and to guide the movable plate 420. It can be understood that the number of the supporting columns 440 is four, and the four supporting columns 440 are symmetrically disposed on the first fixing plate 410 / the second fixing plate 430.

[0043] The driving assembly 460 includes a first gear 461, a second gear 462, and a rotating electrical machine 463, the first gear 461 and the second gear 462 mesh with each other, the output end of the rotating electrical machine 463 is connected to the first gear 461, the second gear 46 2 Set coaxially with the screw 450. The rotating motor 463 is a geared motor, which can be decelerated when the movable plate 420 is close to ascent or descent, thus preventing an emergency stop from generating large vibrations.

[0044] In an embodiment, the lifting device 400 further includes a detection assembly 480, the detection assembly 480 includes two sensing elements 481 and a detection strip 482, the detection strip 482 is provided on the movable plate 420, the detection strip 482 can follow the movable plate 420 It moves and enters the detection area of the sensing element 481 to determine whether the movable plate 420 moves in place. The two sensing elements 481 are respectively provided on the first fixing plate 410 and the second fixing plate 430. The sensing element 481 is in communication with the controller. When the sensing element 481 detects the in-position signal of the rise or fall of the movable plate 420, the in-position signal is transmitted to the controller, and the controller sends a stop signal to the drive assembly 460 to realize the movable plate The real-time monitoring of the movement status of 420 prevents the movable plate 420 from exceeding the maximum movement range, causing the storage rack 100 to collide with other components in the box 500.

[0045] It should be noted that only one detection bar 482 may be provided, and the projections of the two sensing elements 481 on the top of the box 500 coincide, and the detection bar 482 enters the corresponding sensing element when the movable plate 420 moves upward or downward 481 within the detection area. Alternatively, a detection bar 482 is provided for each sensing element 481.

[0046] The lifting device 400 further includes a limit block 490, the limit block 490 is sleeved on the support column 440, and the limit block 490 Connected to the first fixed plate 410, the second fixed plate 430 or the movable plate 420. When the movable plate 420 is raised and lowered, the limit block 490 is clamped between the first fixed plate 410 and the movable plate 420 (or the second fixed plate 430 and the movable plate 420), which can form a limit to the movable plate 420 and prevent the detection assembly When 480 fails, the movable board 420 exceeds the maximum lifting stroke.

[0047] The sensing element 481 includes an optical signal transmitter and an optical signal receiver disposed oppositely, and the detection bar 482 can block the optical signal emitted by the optical signal transmitter. The area between the optical signal transmitter and the optical signal receiver is the detection area. When the detection strip 482 enters the detection area, the optical signal from the optical signal transmitter is blocked, and the optical signal receiver cannot receive the optical signal. The sensing element 481 obtains the in-position signal of the movable plate 420

[0048] It should be noted that the sensing element 481 may also be a contact sensor or a potentiometer.

[0049] In an embodiment, the first fixing plate 410 and the box body are an integral structure. In other words, the first fixing plate 410 is a part of the box, so that one end of the support column 440 can be directly provided on the box.

[0050] Referring to FIG. 5, the automatic lunch box 1000 further includes a rotating device 600 and a detecting device 700. The rotating device 600 includes a motor and a transmission assembly 620. The motor can drive the storage rack 100 to rotate through the transmission assembly 620. The detection device 700 includes a detection element 710 and an induction disc 720. The detection element 710 includes a first sensor 711 and a second sensor 712 that are arranged at intervals. The induction disc 720 can rotate synchronously with the storage rack 100, and the induction disc 720 is provided with multiple positioning along the circumferential direction Each positioning tooth corresponds to one of the storage units 22. The positioning teeth include first positioning teeth 721 and second positioning teeth 722, the first positioning teeth 721 can be detected by one of the first sensor 711 and the second sensor 712, and the second positioning teeth 722 can be detected by the first sensor 711 and The second sensor 712 detects at the same time.

[0051] In the first embodiment, the number of the first positioning teeth 721 is 1, and the number of the second positioning teeth 722 is multiple. In the initial state, the first positioning teeth 721 are located on the first sensor 711 or the second The detection area of the sensor 712, and one of the storage units 22 is aligned with the outlet. The induction disk 720 rotates synchronously with the storage rack 100. When the detection element 710 detects the second positioning tooth 722, it indicates that the next storage unit 22 has reached the position aligned with the take-out port, and the motor stops running so as to be placed in the storage unit Take away the lunch box on 22. When the detecting element 710 detects the first positioning tooth 721 again, it indicates that the storage rack 100 has rotated once, that is, all the lunches on the storage unit 22 have been removed.

[0052] In the second embodiment, the number of the first positioning teeth 721 is plural, and the number of the second positioning teeth 722 is 1, In the initial state, the second positioning tooth 722 is located in the detection area of the first sensor 711 and the second sensor 712 at the same time, and one of the storage units 22 is aligned with the extraction port. The induction disk 720 rotates synchronously with the storage rack 100. When the detection element 710 detects the first positioning tooth 721, it indicates that the next storage unit 22 has reached the position aligned with the take-out port, and the motor stops running so as to be placed in the storage unit Take away the lunch box on 22. When the detection element 710 detects the second positioning tooth 722 again, it indicates that the storage rack 100 has rotated once, that is, all the lunches on the storage unit 22 have been removed.

[0053] Please refer to FIG. 5, the transmission assembly 620 includes a first transmission member 621 and a second transmission member 622 that mesh with each other, the output end of the motor is connected to the first transmission member 621, the second transmission member 622 is the same as the storage rack 100 For the setting of the shaft, please refer to FIGS. 6 and 7, the sensing plate 720 is provided with a plurality of arc-shaped grooves 723, and a plurality of connecting members penetrate the arc-shaped groove 723 to fix the sensing plate 720 on the second transmission member. The arrangement of the arc-shaped groove 723 facilitates the adjustment of the relative position of the sensing plate 720 and the storage rack 100, so that the positions of the first positioning teeth 721 / second positioning teeth 722 on the sensing plate 720 and the storage unit 22 on the storage rack 100 The location corresponds.

[0054] Each of the first sensor 711 and the second sensor 712 includes an optical signal transmitter and an optical signal receiver disposed oppositely. When the sensing disk 720 rotates, the first positioning tooth 721 / second positioning tooth 722 can selectively block light The optical signal emitted by the signal transmitter.

[0055] The technical features of the above-mentioned embodiments can be arbitrarily combined. To simplify the description, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as the combination of these technical features is not If there are contradictions, they should all be regarded as the scope of this specification.

[0056] The above-mentioned embodiment only expresses several embodiments of the present invention, and its description is more specific and detailed, but it should not be understood as limiting the scope of the invention patent. It should be noted that, for a person of ordinary skill in the art, without departing from the concept of the present invention, a number of modifications and improvements can also be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

[Claim 1] An automatic lunch box machine, characterized by comprising:

Cabinet

A storage rack is provided in the box, the storage rack includes a plurality of support mechanisms arranged at intervals, and the support mechanism includes a plurality of storage units for placing lunch boxes;

The heating device is provided in the box and includes a first liquid guide tank group and a second liquid guide tank group, and the first liquid guide tank group and the second liquid guide tank group each include a plurality of liquid guide tanks, The liquid guiding grooves are provided in one-to-one correspondence with the supporting mechanism, and a connection is provided between every two adjacent liquid guiding grooves in the first liquid guiding groove group / the second liquid guiding groove group A pipe, the first liquid guide tank group and the second liquid guide tank group are respectively provided with a valve assembly, the valve assembly includes a plurality of plugs, tie rods and power components, the liquid guide tank corresponds to the upper end of the connecting pipe The positions are all provided with a liquid outlet, the plug is provided at the liquid outlet, the liquid guide groove is provided with a support plate, the power element is provided on the support plate and connected to the pull rod, each The plugs are all connected with the pull rod, and the power element can drive the plug to open or block the liquid outlet.

[Claim 2] The automatic lunch box machine according to claim 1, wherein the liquid guide tank includes a liquid inlet and an overflow pipe, the liquid inlet is provided on the support plate, and the overflow pipe is provided At the bottom wall of the liquid-conducting tank, in the first liquid-conducting tank group and / or the second liquid-conducting tank group, an overflow pipe of one of the liquid-conducting tanks is adjacent to the other The liquid inlet of the liquid guiding tank is communicated.

[Claim 3] The automatic lunch box machine according to claim 2, wherein the automatic lunch box machine further comprises a liquid storage tank and a pump body, the liquid storage tank is provided under the heating device for Containing heat conduction medium, in the first liquid guide tank group / the second liquid guide tank group, the inlet of the liquid guide tank at the top is connected to the suction pipe of the pump body, and the liquid guide at the bottom The overflow pipe of the tank communicates with the liquid storage tank.

[Claim 4] The automatic lunch box machine according to claim 3, wherein the liquid guide groove includes a bottom wall, a first annular side wall and a second annular side wall provided on the bottom wall, the A separator is provided in the liquid guiding tank, and the separator is sequentially connected to the first annular side wall, the bottom wall and the first With two annular side walls, the liquid inlet and the overflow pipe are located on both sides of the partition respectively.

[Claim 5] The automatic lunch box machine according to claim 1, wherein the automatic lunch box machine further comprises a lifting device for driving the storage rack to move up and down, when the lifting device drives the storage box When the rack is lowered, the supporting mechanism can carry the bento to move down so that the packed lunch is immersed in the corresponding liquid guiding tank; when the lifting device drives the storage rack to rise, the supporting mechanism can carry the The bento is moved up so that the bento leaves the channel and faces the take-out opening.

[Claim 6] The automatic lunch box machine according to claim 5, wherein the lifting device includes a first fixed plate, a movable plate, a second fixed plate, a plurality of support columns, a screw, and a drive assembly, and the first A fixed plate is arranged on the box body, the plurality of support columns are arranged on the first fixed plate, the movable plate is sleeved on the support column, and the second fixed plate is connected to the support column away from One end of the first fixing plate, the screw is rotatably connected with the first fixing plate and the second fixing plate respectively and is screwed with the movable plate, and the driving assembly is used to drive the screw to rotate to make The movable plate moves up and down along the support column, the movable plate is connected with a lifting rod, and the lifting rod is connected to the storage rack.

[Claim 7] The automatic lunch box machine according to claim 6, wherein the lifting device further comprises a detection component, the detection component comprises two sensing elements and a detection strip, the detection strip is provided on the On the movable plate, two of the sensing elements are respectively provided on the first fixed plate and the second fixed plate, and the detection bar can follow the movement of the movable plate and enter the detection area of the sensing element.

[Claim 8] The automatic lunch box machine according to claim 6, wherein the lifting device further includes a limit block, the limit block is provided on the first fixing plate and / or the second The fixed plate is sleeved on the support column, and when the movable plate moves into position, the limiting block can form a limit to the movable plate.

[Claim 9] The automatic lunch box machine according to claim 1, wherein the automatic lunch box machine further comprises:

A rotating device, including a motor and a transmission component, the motor can drive the storage rack to rotate through the transmission component; A detection device includes a detection element and an induction disk. The detection element includes a first sensor and a second sensor arranged at intervals. The induction disk can rotate synchronously with the storage rack. The induction disk is provided with a plurality of positions along the circumferential direction Each positioning tooth is corresponding to one of the storage units, the positioning tooth includes a first positioning tooth and a second positioning tooth, the first positioning tooth can be used by the first sensor and the first One of the two sensors detects that the second positioning tooth can be simultaneously detected by the first sensor and the second sensor:

The number of the first positioning teeth is 1, and the number of the second positioning teeth is multiple, and in the initial state, the first positioning teeth are located in the detection area of the first sensor or the second sensor Inside, and one of the storage units is aligned with the take-out port; or,

The number of the first positioning teeth is plural, and the number of the second positioning teeth is 1, in the initial state, the second positioning teeth are located at the detection of the first sensor and the second sensor at the same time Within the area, and one of the storage units is aligned with the fetching opening.

[Claim 10] The automatic lunch box machine according to claim 9, wherein the transmission assembly includes a first transmission member and a second transmission member that cooperate with each other, and an output end of the motor is connected to the first A transmission member, the second transmission member is coaxially arranged with the storage rack, a plurality of arc grooves are formed on the induction disk, and a plurality of connection members are penetrated through the arc groove to fix the induction disk to the Describe the second transmission member.