CN116802447A - Electric machine - Google Patents

Abstract

The invention provides an electric machine, which can adjust the temperature of each accommodating part in a wide range and improve convenience. In the electric machine 1, the first refrigerant pipe 45 is provided to the right side member 16 constituting the side surface of the first housing chamber 9, and the second refrigerant pipe 46 is provided to the left side member 17 constituting the side surface of the second housing chamber 10. The first refrigerant pipe 45 and the second refrigerant pipe 46 are independent from each other. The regulator valve 47 has: a first regulating valve provided in the first refrigerant pipe 45, and a second regulating valve provided in the second refrigerant pipe 46.

Description

Electric machine

Technical Field

The present invention relates to an electric machine having a cooling or heating function.

Background

Patent document 1 discloses a storage box with a cooling/heating function, which includes two storage portions partitioned by a partition wall, and in which the temperature of each storage portion can be individually adjusted. Patent document 2 discloses a storage box capable of cooling a plurality of storage units by one compressor. Patent document 3 discloses a refrigerator in which a partition plate is detachable.

Patent document 4 discloses an electric machine such as a cold and warm box in which a peltier element can be used to cool the box. Patent documents 5 and 6 disclose electric machines in which a compressor can be used to cool a casing. Patent documents 4 and 5 describe: a battery pack that is detachable from the main body is used as a driving source, and the battery pack is charged. Patent document 5 describes a fan for cooling a condenser. Patent document 6 describes a blower for cooling a condenser (radiator) and a control device. Patent document 7 discloses an electric machine including a thermoelectric element that operates on the power of a battery pack, and having a heat-insulating or cold-insulating space, which can be used outdoors by using the power of the battery pack. The heat or cold insulation box of patent document 7 includes a Direct Current (DC) input section.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2001-194051

Patent document 2: japanese patent laid-open No. 58-173367

Patent document 3: japanese patent laid-open publication No. 2013-76494

Patent document 4: international publication No. 2018-101144

Patent document 5: japanese patent laid-open publication No. 2017-150700

Patent document 6: japanese patent application laid-open No. 2015-014434

Patent document 7: japanese patent laid-open No. 2018-91501

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 discloses a structure in which a cooling/heating member is disposed on a bottom surface of a housing portion, and the bottom surface is cooled or heated. Therefore, the temperature adjustment is easy on the bottom side of each housing portion, but is difficult on the upper side. The first object is to provide an electric machine capable of adjusting the temperature of each housing section individually over a wide range and improving convenience. Moreover, the present inventors found the following problems, namely: when a plurality of storage units can be cooled by one compressor as in patent document 2, when the body is tilted, the flow rate of the refrigerant changes, and the temperature of the storage units deviates from the set temperature. Further, the inventors found that, when a plurality of storage units can be cooled by one compressor as in patent document 2, the temperature of the storage units deviates from the set temperature due to individual differences in the electric machine (such as a dimensional error in the diameter of the refrigerant tube or a difference in the length of the refrigerant tube due to a difference in the winding manner), when two chambers are to be cooled at the same time. Moreover, the present inventors found the following problems: if the set temperatures of the plurality of storage units are set with temperature differences, the temperatures of the respective storage units deviate from the set temperatures. A second object is to provide an electric machine that can accurately control the temperature of a housing unit even when the electric machine includes a plurality of housing units.

Moreover, the present inventors found the following problems: when the difference between the set temperatures of the plurality of storage units is equal to or greater than a predetermined value, it is difficult to make the temperature of at least one storage unit reach the set temperature. A third object is to provide an electric machine capable of suppressing the risk that the temperature of the storage portion cannot reach the set temperature.

Moreover, the present inventors found the following problems: in an electric machine that uses a common compressor to cool a plurality of storage units, if the driving strength of the compressor when only one storage unit is cooled is the same as the driving strength of the compressor when a plurality of storage units are cooled, the refrigerant may return to the compressor while maintaining a liquid state. A fourth object is to provide an electric machine in which the life of a compressor is increased, that is, the burden on the compressor is reduced.

The detachable partition plate of the refrigerator of patent document 3 is a single plate, and it is difficult to carry or store the partition plate. A fifth object is to provide an electric machine in which convenience in carrying or storing a partition plate is improved.

Patent documents 4 and 5 describe that the battery pack can be charged by a built-in charging circuit, but cooling of the charging circuit is not considered. Patent document 6 does not describe how to cool the condenser and the control device. A sixth object is to provide an electric machine capable of efficiently cooling a circuit (circuit board).

The thermal insulation or cold insulation box of patent document 7 has no storage function except for a thermal insulation or cold insulation space, and is inconvenient in the case where it is desired to carry with it an accessory such as a battery pack or a bottle opener for replacement. Further, if the housing function is not provided outside the heat-insulating or cold-insulating space, the use of a structure having a detachable partition plate is inconvenient in terms of the transport and placement place of the detached partition plate. A seventh object is to provide an electric machine capable of adding a housing function independent of a heat-insulating or cold-insulating space.

In the case of using an electric machine in a vehicle, there is a demand for using an on-vehicle power supply. In the heat preservation or cool keeping box of patent document 7, it is considered to input electric power from the vehicle-mounted power supply to the DC input unit. However, depending on the state of the vehicle-mounted power supply, the vehicle-mounted power supply may not be suitable. An eighth object is to provide an electric machine that can preferably distinguish between a vehicle-mounted power supply and a battery pack.

The present invention aims to provide an electric machine which solves at least one of the problems.

Technical means for solving the problems

An embodiment of the present invention is an electric machine. The electric machine includes: the body is provided with a first accommodating chamber and a second accommodating chamber which are adjacent to each other and respectively provided with a bottom surface and a side surface; a cover body openable and closable with respect to the main body; and a cooling mechanism having a first cooling portion for cooling the first housing chamber and a second cooling portion for cooling the second housing chamber, wherein the first cooling portion is provided on at least a side surface of the first housing chamber, and the second cooling portion is provided on at least a side surface of the second housing chamber in the electric machine.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention can provide an electric machine that solves at least one of the problems.

Drawings

Fig. 1 is a perspective view of an electric machine 1 according to an embodiment of the present invention, as viewed from the front upper side, and is a perspective view of a state in which a first cover 6 is opened.

Fig. 2 is a perspective view of the electric machine 1 from the upper right front, and is a perspective view of the partition plate 70 removed from fig. 1.

Fig. 3 is a perspective view of the electric machine 1 from the upper right and front, and is a perspective view of the second cover 7 in a state of being opened.

Fig. 4 is a perspective view of the electric machine 1 from the upper right and front, and is a perspective view of the battery pack 29 removed from fig. 3.

Fig. 5 is a perspective view of the electric machine 1 from the upper right rear side.

Fig. 6 is a rear view of the electric machine 1.

Fig. 7 is a plan view of the electric machine 1, and is a plan view with the second cover 7 omitted.

Fig. 8 is an enlarged rear view of the electric machine 1 with the right outer case 13 omitted.

Fig. 9 is a schematic enlarged view of the inside of the right outer case 13 as viewed from above.

Fig. 10 is an explanatory view of the installation of the battery case 30 with respect to the main frame 11 in the electric machine 1.

Fig. 11 is a view of the main frame 11 with the battery case 30 mounted thereto, as viewed from below.

Fig. 12 is a perspective view of the electric machine 1 from the rear right, with the right outer case 13 omitted.

Fig. 13 is a perspective view of the inside of the electric machine 1 as viewed from the upper right rear.

Fig. 14 is a front view of the inside of the electric machine 1, with the heating mechanism 50 omitted.

Fig. 15 is an assembly explanatory diagram of the bottom surface member 15, the right side surface member 16, the left side surface member 17, and the rail member 18 in the electric machine 1.

Fig. 16 (a) is a right side view of the inside of the electric machine 1 when the electric machine 1 is in a horizontal state. (B) Is a right side view of the inside of the electric machine 1 when the electric machine 1 is in an inclined state.

Fig. 17 is a simple block diagram of the mechanical structure of the electric machine 1.

Fig. 18 (a) is a right side view of the inside of the electric machine according to the modification when the electric machine is in a horizontal state. (B) A right side view of the inside of the electric machine according to a modification is shown when the electric machine is in an inclined state.

Fig. 19 is a simplified block diagram of the mechanical structure of the electric machine according to the modification.

Fig. 20 is a front view of the inside of the electric machine 1.

Fig. 21 is a rear view of the interior of the electric machine 1.

Fig. 22 is an enlarged cross-sectional view showing a portion where the right side member 16 (or the left side member 17), the first refrigerant tube 45 (or the second refrigerant tube 46), and the first heating mechanism 51 (or the second heating portion 52) overlap in the electric machine 1.

Fig. 23 is a perspective view of the left outer case 12 and the inside thereof of the electric machine 1 viewed from the upper right rear.

Fig. 24 is a right side view of the electric machine 1.

FIG. 25 (A) is a sectional view of FIG. 24 A-A. (B) is an enlarged view of portion B of FIG. 25 (A).

Fig. 26 is a schematic perspective view of the bottom surface member 15, the right side surface member 16, the left side surface member 17, and the rail member 18 of the electric machine 1, in which the bottom partition plate 72 is attached without the top partition plate 71, and the storage 79 is stored therein.

Fig. 27 (a) is a view of the partition plate 70 of the electric machine 1 as seen from the plane perpendicular direction. (B) is a C-C cross-sectional view of FIG. 27 (A). (C) is a perspective view of the partition plate 70.

Fig. 28 (a) is a view of the partition plate 70 as seen from the surface vertical direction in a state where the upper partition plate 71 is separated from the lower partition plate 72. (B) is a D-D sectional view of FIG. 28 (A). (C) Is a perspective view of the upper partition plate 71 and the lower partition plate 72 of the partition plate 70 separated from each other.

Fig. 29 (a) is a view of the partition plate 170 having another structure as viewed from the plane perpendicular direction. (B) is an E-E cross-sectional view of FIG. 29 (A). (C) is a perspective view of the partition plate 170.

Fig. 30 (a) is a view of the folded partition plate 170 from the plane vertical direction in the middle. (B) is a F-F sectional view of FIG. 30 (A). (C) is a perspective view of the middle of the folding partition plate 170.

Fig. 31 (a) is a view from the plane vertical direction in a state where the partition plate 170 is folded. (B) is a G-G cross-sectional view of FIG. 31 (A). (C) is a perspective view of the state where the partition plate 170 is folded.

Fig. 32 (a) is an external view of the setting unit 60 of the electric machine 1. (B) Is a diagram showing a display example of the display portion 61 of the setting portion 60 in the two-chamber mode in which the temperatures of the first housing chamber 9 and the second housing chamber 10 are individually controlled. (C) A display example of the display unit 61 in the large-compartment single-mode in which only the first storage compartment 9 side is temperature-controlled is shown. (D) The display unit 61 is shown in a single-compartment mode in which only the second storage compartment 10 is temperature-controlled. (E) A display example of the display unit 61 in the single-chamber mode is shown in which the temperatures of the first and second storage chambers 9 and 10 are controlled in a unified manner. (F) In the double-chamber mode, the display unit 61 is shown in a state where the set temperature of the first housing chamber 9 is set to 0 ℃ and the set temperature of the second housing chamber 10 is set to 60 ℃. (G) Fig. 32 (F) shows a display example of the display unit 61 after the temperature of the second housing chamber 10 is automatically changed to 50 ℃ when the temperature of the first housing chamber 9 is changed to-10 ℃.

Fig. 33 (a) is a table showing an example of the operation of the setting unit 60 and the flow of display and mode switching according to the operation. (B) A table showing an example of the operation of the right chamber temperature setting button 62 or the left chamber temperature setting button 63 of the setting unit 60 and the display corresponding thereto. (C) Is a table showing a display example of the remaining battery amount display portion 61a of the display portion 61 according to the state of the battery pack 29. (D) Is a table showing a display example of the external power supply connection display portion 61b of the display portion 61 according to the presence or absence of the input of the external DC power supply. (E) Is a table showing a display example of the USB device power-on display portion 61c of the display portion 61 according to the presence or absence of power supply to the USB device. (F) Is a table showing a display example of the error display portion 61d of the display portion 61 when an error occurs.

Fig. 34 is a circuit block diagram of the electric machine 1.

Fig. 35 is a circuit block diagram showing the internal configuration of the rotational speed setting circuit 84 shown in fig. 34.

Fig. 36 (a) is a timing chart of the power supply selection when the DC power supply 90 is a normal vehicle-mounted power supply, the voltage of the DC power supply 90, and the driving current of the compressor. (B) In the operation of the comparative example of the electric machine 1, the DC power supply 90 is a timing chart of the power supply selection, the voltage of the DC power supply 90, and the driving current of the compressor 41 when the vehicle-mounted power supply is degraded.

Fig. 37 is a timing chart of the power supply selection when the DC power supply 90 is the vehicle-mounted power supply that has been degraded, the voltage of the DC power supply 90, the voltage of the battery pack 29a or 29b, the input voltage to the compressor driving circuit 48, and the driving current of the compressor 41 in the operation of the embodiment of the electric machine 1.

Fig. 38 is a flowchart showing a main routine of the electric machine 1.

Fig. 39 is a flowchart showing the power supply selection routine of fig. 38.

Fig. 40 is a flowchart showing the DC power state discrimination routine of fig. 39.

Fig. 41 is a flowchart showing a charging routine of the electric machine 1.

Fig. 42 is a flowchart of the operation of the large-compartment individual mode of the electric machine 1.

Fig. 43 is a flowchart of the operation of the small-compartment individual mode of the electric machine 1.

Fig. 44 is a flowchart of the operation of the single-compartment mode of the electric machine 1.

Fig. 45 is a flowchart of the operation of the electric machine 1 in the two-compartment mode.

Fig. 46 is a graph showing time-varying changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the operation is performed in the two-chamber mode with the set temperature of the first storage chamber 9 set to 10 ℃ and the set temperature of the second storage chamber 10 set to-18 ℃.

Fig. 47 is a graph showing time-varying changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the operation is performed in the two-chamber mode with the set temperature of the first storage chamber 9 set at-18 ℃ and the set temperature of the second storage chamber 10 set at 10 ℃.

Fig. 48 is a time chart of the input voltage to the compressor 41, the rotation speed of the compressor 41, the opening/closing signals of the first and second adjustment valves 47a and 47b, the start/closing of the first and second heating units 51 and 52, and the temperatures of the first and second storage chambers 9 and 10 in the double-chamber mode.

Fig. 49 is a flowchart of an operation of the dual chamber mode in which the alternate operation mode is added to the dual chamber mode in fig. 45.

Fig. 50 is an explanatory diagram of a specific example of the determination 1 (S521) in fig. 49.

Fig. 51 is an explanatory diagram of a specific example of the determination 2 (S522) in fig. 49.

Fig. 52 is an explanatory diagram of a specific example of the determination 3 (S80) in fig. 53.

Fig. 53 is a flowchart showing a first version of the alternate operation mode (S523) of fig. 49.

Fig. 54 is a flowchart showing a second version of the alternate operation mode (S523) of fig. 49.

Fig. 55 is a graph (one of) showing time variations between the temperatures of the first housing chamber 9 and the second housing chamber 10 and the rotational speed of the compressor 41 when the temperatures of the first housing chamber 9 and the second housing chamber 10 are set to-18 ℃ and the operation is performed with the transition from the simultaneous operation mode to the alternate operation mode in the double-chamber mode.

Fig. 56 is a graph (two) showing time variation between the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the temperatures of the first and second storage chambers 9 and 10 are set to-18 ℃ in the two-chamber mode and the operation is performed with a transition from the simultaneous operation mode to the alternate operation mode.

Fig. 57 is a graph showing time-varying changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the operation is performed with the transition from the simultaneous operation mode to the alternate operation mode while the set temperature of the first storage chamber 9 is set to-18 ℃ and the set temperature of the second storage chamber 10 is set to-5 ℃ in the double-chamber mode.

Fig. 58 is a graph showing time variations between the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotational speed of the compressor 41 when the temperature of the second storage chamber 10 is controlled to be at 60 ℃ and the temperature of the second storage chamber 10 is at 30 ℃ in the double-chamber mode and the cooling of the second storage chamber 10 by the compressor 41 is stopped.

Fig. 59 is a graph showing time variations between the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotational speed of the compressor 41 when the temperature of the first storage chamber 9 is set to 60 ℃, the temperature of the second storage chamber 10 is set to 30 ℃ and the cooling of the second storage chamber 10 by the compressor 41 is controlled to stop in accordance with the time from the start of cooling in the double-chamber mode.

Fig. 60 is a flowchart of an operation of the dual chamber mode in which time control is added to the dual chamber mode in fig. 45.

Fig. 61 (a) is a waveform diagram of the driving current of the compressor 41 before and after the restarting operation when the control of stopping the operation of the compressor 41 for one minute and restarting the operation is performed. (B) The waveform of the driving current of the compressor 41 before and after the restarting operation is performed when the operation of the compressor 41 is stopped for two minutes and the operation is restarted.

Fig. 62 is a graph showing time-series changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the set temperature of the first storage chamber 9 is 60 ℃ and the set temperature of the second storage chamber 10 is 30 ℃ and the cooling of the second storage chamber 10 by the compressor 41 is repeatedly operated for one minute and stopped for two minutes in the double-chamber mode.

Fig. 63 is a perspective view of a main part of the electric machine 1 having the storage unit (attachment) 200 attached to the right side surface.

Fig. 64 (a) is a front view of a main portion of the electric machine 1. (B) is a right side view of the electric machine 1.

Fig. 65 (a) is a plan view of a main portion of the electric machine 1. (B) is a bottom view of a main portion of the electric machine 1.

Fig. 66 (a) is a front sectional view of a main portion of the electric machine 1 (H-H sectional view of fig. 66 (B)). Fig. 64 (B) shows the pocket 201 removed.

Fig. 67 (a) is a perspective view of the storage unit 200 in which the pocket 201 is opened. (B) A perspective view of the storage unit 200 is shown with the pocket 201 closed. (C) is a perspective view of the storage unit 200 from the back side. (D) A perspective view of a storage unit in which the pocket 201 is replaced with the pocket 201A.

Fig. 68 is a six-sided view of the storage unit 200.

Fig. 69 is a six-sided view of the rack portion of the storage unit 200.

Fig. 70 is a six-sided view of the pocket 201 of the storage unit 200.

Fig. 71 is a perspective view of the electric machine 1 to which the storage unit 200, the accessory bags 231 to 233, and the S-hook 237 are attached.

Fig. 72 is a perspective view of the electric machine 1 in fig. 63, in which the attachment bag 231 is attached instead of the storage unit 200.

Fig. 73 is a perspective view of the main part of the electric machine 1 in which the storage unit (attachment unit) 250 is attached to the movable handle 20.

Fig. 74 is a perspective view of the main part of the electric machine 1 from below.

Fig. 75 is a perspective view of an electric machine 1A in which a housing unit (attachment unit) 300 is mounted on the front surface, according to another embodiment of the present invention.

Fig. 76 is a view of fig. 75 with the pocket 301 removed.

Fig. 77 is a front perspective view of an electric machine 1A in which a housing unit 200 is mounted on the right side surface, a housing unit 300 is mounted on the front surface, and a housing unit (attachment portion) 400 is mounted on the rear surface.

Fig. 78 is a rear perspective view of the electric machine 1A.

Fig. 79 is a front perspective view of the electric machine 1A having the housing unit (attachment portion) 500 mounted on the upper surface.

Fig. 80 is a rear perspective view of the electric machine 1A.

Fig. 81 is a view with the pocket 501 removed in fig. 79.

Fig. 82 is a perspective view of an electric machine 1B according to still another embodiment of the present invention.

Detailed Description

Hereinafter, the same or equivalent constituent elements, members, etc. shown in the drawings are denoted by the same reference numerals, and overlapping description thereof will be omitted as appropriate. The embodiments are not limited to the invention but are exemplified. All the features and combinations thereof described in the embodiments are not necessarily essential to the invention.

The present embodiment relates to an electric machine 1. The electric machine 1 is a portable cooling/heating box having a cooling function. With reference to fig. 1, the directions of the electric machine 1, which are orthogonal to each other, are defined in the front-rear, up-down, and left-right directions. The front-rear direction is the depth direction (short side direction) of the electric machine 1, the left-right direction is the width direction (long side direction) of the electric machine 1, and the up-down direction is the height direction of the electric machine 1.

The electric machine 1 includes a body 2. The body 2 has a first body portion 3 and a second body portion 4 different from the first body portion 3. The first body 3 and the second body 4 are arranged in the left-right direction. The second body portion 4 is located outside and to the right of the first body portion 3.

The first body portion 3 has a left outer case 12. The left outer case 12 is a substantially rectangular parallelepiped resin molded body with an open upper portion, for example, and constitutes an outer package of the first body portion 3. The second body portion 4 has a right outer case 13. The right outer case 13 is a substantially rectangular parallelepiped resin molded body with an upper portion and a left portion opened, for example, and constitutes an outer package of the second body portion 4. The right outer case 13 is fixed to the right side surface of the left outer case 12 by screwing or the like, and is integrated.

The body 2 has a main frame 11. The main frame 11 is, for example, a resin molded body. The main frame 11 is a frame body that spans the upper parts of the first body 3 and the second body 4, and has openings 11c and 11d corresponding to the first body 3 and the second body 4, respectively, as shown in fig. 10.

The electric machine 1 includes a cover 5. The cover 5 is provided on the upper portion of the main body 2 and is openable and closable with respect to the main body 2. The lid 5 has a first lid 6 for opening and closing the first body 3 and a second lid 7 for opening and closing the second body 4 (opening and closing the battery pack housing chamber 22).

As shown in fig. 5, the first cover 6 is rotatably coupled to the rear end portion of the main frame 11 by a first hinge mechanism 25. The first cover 6 has a handle portion 6a. The user rotates the handle portion 6a of the first lid 6 in the closed state shown in fig. 3 forward to release the locking of the first lid 6 with respect to the main frame 11, and thus, the user opens the first lid 6 by grasping the handle portion 6a as shown in fig. 1.

As shown in fig. 5, the second cover 7 is rotatably coupled to the rear end portion of the main frame 11 by a second hinge mechanism 26. The second cover 7 has a handle portion 7a. The user rotates the handle portion 7a of the second lid 7 in the closed state shown in fig. 1 upward to release the locking of the second lid 7, and thus, the user grips the handle portion 7a to open the second lid 7 as shown in fig. 3.

The electric machine 1 includes a pair of right and left handle portions 21, and includes a plurality of (e.g., four) leg portions 35 as ground contact portions at the bottom. The user can lift the electric machine 1 by grasping the left and right handle portions 21 and move the electric machine 1.

The electric machine 1 has casters 19 and a movable handle (carrying handle) 20. Casters 19 are provided in front and rear of the right lower portion of the main body 2, respectively. The rotation axis direction of the caster 19 is parallel to the left-right direction. The movable handle 20 is rotatably provided on the left side surface of the body 2. The rotation axis direction of the movable handle 20 is parallel to the left-right direction. The user rotates the movable handle 20 upward, and grips the movable handle 20 to lift the left part of the main body 2 from the ground, whereby the electric machine 1 can be moved by the caster 19.

The electric machine 1 includes a USB (universal serial bus (Universal Serial Bus)) terminal 27 and a power input terminal 28 in the second body portion 4. The electric machine 1 can supply charging power to a machine connected to the USB terminal 27. The electric machine 1 can input dc power from the outside via the power supply input terminal 28. The electric machine 1 is operated by the direct current power or the power of the battery pack 29.

The first body portion 3 has a housing chamber (housing portion) 8. The housing chamber 8 has a first housing chamber 9 which is a large chamber and is a right chamber, and a second housing chamber 10 which is a small chamber and is a left chamber. The first housing chamber (first housing portion) 9 and the second housing chamber (second housing portion) 10 are adjacent to each other and are partitioned (separated) by a removable partition plate 70.

The first body 3 is a constituent element of the housing chamber 8, and includes a bottom surface member 15, a right side surface member 16, a left side surface member 17, and a rail member 18 shown in fig. 15 and the like. The bottom member 15 is, for example, a resin molded body, and forms the bottom surface of the housing chamber 8. The right side member 16 and the left side member 17 are each made of metal (metal plate) such as U-shaped aluminum when viewed from the up-down direction. The right side member 16 constitutes a side surface of the first housing chamber 9. The left side member 17 forms a side surface of the second housing chamber 10.

The first side surface 9a of the first housing chamber 9 is the right side surface of the first housing chamber 9, and is the side surface farthest from the second housing chamber 10. The second side surface 9b of the first housing chamber 9 is a front surface and a rear surface of the first housing chamber 9, and is a side surface connected to the first side surface 9 a. The first side 10a of the second housing chamber 10 is the left side of the second housing chamber 10, and is the side furthest from the first housing chamber 9. The second side surface 10b of the second housing chamber 10 is a front surface and a back surface of the second housing chamber 10, and is a side surface connected to the first side surface 10 a.

As shown in fig. 15 and 25 (B), the right side member 16 has a pair of left end portions each having an outer curved portion 16a. The left side member 17 has a pair of right end portions each having an outer curved portion 17a. The outer curved portions 16a, 17a extend in the up-down direction, respectively.

The pair of rail members 18 have groove portions 18c, 18d into which the outer curved portions 16a, 17a are fitted (engaged), respectively. The rail member 18 is integrally fixed to the right side member 16 and the left side member 17 (the outer curved portions 16a and 17 a) by screwing or the like in a state where the outer curved portions 16a and 17a are fitted into the groove portions 18c and 18d. That is, the rail member 18 also has a function of connecting the right side member 16 and the left side member 17. The rail member 18 has a cutout portion 18a for screwing to the main frame 11. The cutout 18a communicates with the boss 11b (fig. 11) of the main frame 11. The rail member 18 is fixed to the main frame 11 by a screw (not shown) screwed to the boss 11b through the notch 18a.

The rail member 18 has a recess (groove) 18b extending in the up-down direction. The recess 18b constitutes a recess on the inner surface of the housing chamber 8, and serves as a guide for loading and unloading the partition plate 70. The front rail member 18 does not protrude rearward from the front inner sides of the right side member 16 and the left side member 17, that is, the front inner side of the housing chamber 8. The rear rail member 18 does not protrude forward from the rear surface inner sides of the right side member 16 and the left side member 17, that is, the rear surface inner side of the housing chamber 8.

The right side member 16, the left side member 17, and the rail member 18 combined with each other are fitted into the bottom member 15 from above, and become an inner box of the first body portion 3. A heat insulating material, not shown, is filled between the inner case and the left outer case 12. The heat insulating material is cured after filling, and therefore also has a function of fixing the inner box to the left outer box 12 and further fixing the main frame 11.

As shown in fig. 15, the electric machine 1 includes a first thermistor 55 as a first temperature sensor and a first holder 57 holding the first thermistor 55, and a second thermistor 56 as a second temperature sensor and a second holder 58 holding the second thermistor 56. The first bracket 57 is fixed to a substantially central portion of the right side surface member 16 by screwing or the like. The first thermistor 55 detects the temperature inside the right side member 16, i.e., inside the first housing chamber 9. The second bracket 57 is fixed to a substantially central portion of the left side surface member 17 by screwing or the like. The second thermistor 56 detects the temperature inside the left side member 17, i.e., inside the second housing chamber 10. The electric machine 1 may include a third temperature sensor that detects an outside air temperature, which is a temperature outside the first housing chamber 9 and the second housing chamber 10.

As shown in fig. 4, the second body 4 has a battery pack housing chamber 22. The battery housing chamber 22 has two battery mounting portions 22a (battery connecting portions). The battery pack 29 can be detachably mounted (connected) to each battery pack mounting portion 22a as shown in fig. 3. The battery pack 29 is, for example, a battery pack for an electric power tool having a rated output voltage of 18V. The battery pack housing chamber 22 is a space formed by the battery case 30 and the battery terminal 31 shown in fig. 10 and the like.

The battery case 30 is, for example, a resin molded body. The battery terminal 31 is, for example, a resin molded body that holds a connection terminal with the battery pack 29. As shown in fig. 10, the battery case 30 is inserted into the opening 11d of the main frame 11 from above and is fixed to the main frame 11 by screwing. As shown in fig. 11, the battery case 30 has a boss 30a for screw-fastening to the main frame 11. A drain hole 30b is provided in the bottom surface of the battery case 30.

As shown in fig. 14, the electric machine 1 includes a cooling mechanism 40. The cooling mechanism 40 can cool the housing chamber 8 by dc power input from the outside through the power input terminal 28 or power of the battery pack 29. The cooling mechanism 40 includes a compressor 41, a condenser 42, a refrigerant pipe 44, and an adjustment valve 47 as a cooling machine. The cooling mechanism 40 is provided for the most part of the second body portion 4 except for the portion of the refrigerant tube 44 extending into the first body portion 3. The condenser 42 is provided so as to be offset from the inner surface of the second main body 4 on the opposite side of the first main body 3, that is, the inner surface of the right side surface of the right outer case 13, and has a space with the right side surface of the left outer case 12.

The compressor 41 is an output unit of the electric machine 1, has a motor, compresses a refrigerant, and discharges the refrigerant as a high-temperature and high-pressure gas. The condenser 42 discharges heat of the refrigerant discharged from the compressor 41, and discharges the refrigerant as a liquid. The refrigerant pipe 44 forms a path through which the refrigerant discharged from the condenser 42 passes around the housing chamber 8 and returns to the compressor 41. The refrigerant evaporates by depriving heat from the housing chamber 8 in the process of passing around the housing chamber 8, and becomes a gas. The adjustment valve 47 is provided in a portion of the refrigerant pipe 44 where the refrigerant returns to the compressor 41 from around the housing chamber 8, that is, where the refrigerant flows in a gaseous state.

The refrigerant pipe 44 has a first refrigerant pipe 45 as a first cooling portion and a second refrigerant pipe 46 as a second cooling portion. The refrigerant tube 44 is still kept one and extends into the first main body portion 3, and as shown in fig. 13, the branch portion 44a near the back surface of the right side member 16 is divided into two, i.e., a first refrigerant tube 45 and a second refrigerant tube 46. That is, the refrigerant tube 44 extends to the branch portion 44a near the boundary (the rail 18) between the first housing chamber 9 and the second housing chamber 10 while being kept single. As a result, the surface area of the refrigerant pipe in contact with the outside air is reduced as compared with the case where the refrigerant pipe is branched near the condenser, and unnecessary temperature rise of the refrigerant can be suppressed, so that the housing chamber can be cooled more efficiently. The refrigerant pipe forming the path from the adjustment valve 47 to the suction portion of the compressor 41 is an example of the third cooling portion, and the refrigerant pipe forming the path from the discharge portion of the compressor 41 to the branch portion 44a is an example of the fourth cooling portion.

The first refrigerant pipe 45 is provided on at least a side surface of the first housing chamber 9, and cools the first housing chamber 9. The first refrigerant tube 45 is provided at least on the first side surface 9a, preferably on the first side surface 9a and the second side surface 9b. The second refrigerant pipe 46 is provided on at least a side surface of the second housing chamber 10, and cools the second housing chamber 10. The second refrigerant tube 46 is provided at least on the first side surface 10a, preferably on the first side surface 10a and the second side surface 10b. The first refrigerant pipe 45 and the second refrigerant pipe 46 are independent from each other. That is, the first refrigerant pipe 45 is provided so as to mainly cool the first housing chamber 9, and the second refrigerant pipe 46 is provided so as to mainly cool the second housing chamber 10.

The first refrigerant pipe 45 extends along the right side member 16 from the left end portion of the back surface of the right side member 16 to the front-rear direction central portion of the right side surface of the right side member 16, and is folded back therefrom to the left end portion of the back surface of the right side member 16, and after repeating such a reciprocation three times, extends from the left end portion of the back surface of the right side member 16 to the left end portion of the front surface of the right side member 16, and further extends from the left end portion of the front surface of the right side member 16 to the front-rear direction central portion of the right side surface of the right side member 16, and is folded back therefrom to the left end portion of the front surface of the right side member 16, and after repeating such a reciprocation three times, a path to the adjustment valve 47 is constituted. Before the valve 47 is adjusted, a gas tank 45a is provided for temporarily storing the refrigerant that has been expanded before returning to the compressor.

The second refrigerant tube 46 extends along the left side member 17 from the right end portion of the back surface of the left side member 17 to the front-rear direction central portion of the left side surface of the left side member 17, and is folded back therefrom to the right end portion of the back surface of the left side member 17, and after repeating such a reciprocation three times, extends from the right end portion of the back surface of the left side member 17 to the right end portion of the front surface of the left side member 17, and further extends from the right end portion of the front surface of the left side member 17 to the front-rear direction central portion of the left side surface of the left side member 17, and is folded back therefrom to the right end portion of the front surface of the left side member 17, and after repeating such a reciprocation three times, constitutes a path to the adjustment valve 47. Before the valve 47 is adjusted, a gas tank 46a is provided for temporarily storing the refrigerant that has been expanded before returning to the compressor. Here, the air tanks 45a and 46a are examples of the storage portion.

As shown in fig. 15, at least a part of the first refrigerant tube 45 is integrally provided to the right side member 16, and at least a part of the second refrigerant tube 46 is integrally provided to the left side member 17. That is, the right side member 16 and the left side member 17 are of a refrigerant tube integrated type.

The adjustment valve 47 is connected to the first refrigerant pipe 45 and the second refrigerant pipe 46, and can individually adjust (open/close) the flow of the refrigerant in the first refrigerant pipe 45 and the second refrigerant pipe 46. The adjustment valve 47 includes: a first adjustment valve 47a provided in the first refrigerant pipe 45 and adjusting the flow of the refrigerant in the first refrigerant pipe 45; and a second adjustment valve 47b provided in the second refrigerant pipe 46 to adjust the flow of the refrigerant in the second refrigerant pipe 46. For example, by setting only the first adjustment valve 47a to the open state, the refrigerant flows through the first refrigerant pipe 45 as a path, and thus the first housing chamber 9 can be cooled. This is because, in the branching portion 44a, the internal pressure (P1) of the refrigerant pipe 45 differs from the internal pressure (P2) of the refrigerant pipe 46 (P1 < P2). When it is desired to cool both the first storage chamber 9 and the second storage chamber 10, the first adjustment valve 47a and the second adjustment valve 47b are opened, so that the refrigerant flows through the first refrigerant pipe 45 and the second refrigerant pipe 46 as paths, and therefore both the first storage chamber 9 and the second storage chamber 10 can be cooled. The regulator valve 47 is provided in a single form here with the functions of the first regulator valve 47a and the second regulator valve 47b, but the first regulator valve 47a and the second regulator valve 47b may be independent from each other. The first adjustment valve 47a and the second adjustment valve 47b are solenoid valves, for example.

Providing the first and second adjustment valves 47a and 47b in the portions of the first and second refrigerant tubes 45 and 46 in which the refrigerant flows in the gaseous state helps to suppress the imbalance in the amounts of the refrigerant flowing into the first and second refrigerant tubes 45 and 46 when the electric machine 1 is in the tilted state. This is because the refrigerant is light in the gas state, and therefore, even if there is a difference in the positions of the first adjustment valve 47a and the second adjustment valve 47b, the refrigerant flow is less likely to be deviated due to this difference. Fig. 16 (a) and (B) visually show that the flow of the refrigerant is less likely to be deviated regardless of whether the electric machine 1 is in a horizontal state or an inclined state. In fig. 16 (a) and (B), the first adjustment valve 47a and the second adjustment valve 47B are illustrated as independent bodies.

On the other hand, unlike the present embodiment, the following structure is also considered: as shown in fig. 18 (a) and (B), a first adjustment valve 147a and a second adjustment valve 147B are provided in the portions where the refrigerant flows in a liquid state in the first refrigerant pipe 45 and the second refrigerant pipe 46, respectively. In the structure of the electric machine according to the present modification, the horizontal state shown in fig. 18 (a) is sufficient, but in the inclined state, as shown in fig. 18 (B), the flow of the refrigerant is deviated. This is because the refrigerant is heavy in a liquid state, and therefore the difference in the positions of the first adjustment valve 147a and the second adjustment valve 147b affects the flow of the refrigerant. Therefore, when use in an inclined state is envisaged, the structure of the electric machine 1 of the present embodiment is preferable.

In the electric machine 1, as shown in fig. 17, the refrigerant in the gas state discharged from the compressor 41 flows into the refrigerant pipe 44 in the liquid state through the condenser 42 and the capillary tube 43, branches into the first refrigerant pipe 45 and the second refrigerant pipe 46, absorbs heat from the first housing chamber 9 and the second housing chamber 10, evaporates, and returns to the compressor 41 in the gas state through the first adjustment valve 47a and the second adjustment valve 47 b. On the other hand, in the electric machine according to the modification shown in fig. 18 (a) and (B), as shown in fig. 19, the refrigerant in the gas state discharged from the compressor 41 passes through the condenser 42 and the capillary tube 43, flows into the refrigerant pipe 44 in the liquid state through the first adjustment valve 147a and the second adjustment valve 147B, branches into the first refrigerant pipe 45 and the second refrigerant pipe 46, absorbs heat from the first housing chamber 9 and the second housing chamber 10, and is gasified, and returns to the compressor 41 in the gas state.

As shown in fig. 8, 12, and the like, the electric machine 1 includes a fan 49. A fan 49 is provided in the right outer case 13. That is, the fan 49 is housed in the second main body 4. The fan 49 generates fan wind for cooling the cooling mechanism 40 (particularly, the condenser 42) and the control circuit board 80 described later. An air inlet 23 for introducing fan air is provided at the front surface of the right outer case 13. An exhaust port 24 for exhausting the fan wind is provided at the rear surface of the right outer case 13. The fan wind flows in the front-rear direction from the intake port 23 toward the exhaust port 24. The relationship between the intake and exhaust may be reversed.

As shown in fig. 8, 12, and the like, the electric machine 1 includes a control circuit board 80. The control circuit board 80 is fixed by screwing to a boss 12a provided on the outer surface (the boundary wall surface of the first body portion 3 and the second body portion 4) of the right side surface of the left outer case 12, and is positioned in the right outer case 13 in a state substantially perpendicular to the left-right direction. That is, the control circuit board 80 is housed in the second main body 4. The control circuit board 80 has an internal circuit enclosed by a broken line in fig. 34, and has a function of controlling the cooling mechanism 40 and a function of controlling the charge of the battery pack 29. The charging is to charge the battery pack 29 attached to the battery pack attachment portion 22a with dc power from the outside via the power supply input terminal 28.

As shown in fig. 8, 9, 12, and the like, the electric machine 1 includes a branch portion 32. The branching portion 32 branches the fan air into a first air passage 33 for cooling the cooling mechanism 40 (particularly, the condenser 42) and a second air passage 34 for cooling the control circuit board 80, which is different from the first air passage 33. The branch portion 32 is a plate-like portion extending downward from the bottom surface of the battery pack accommodating chamber 22 and substantially perpendicular to the left-right direction. The branching portion 32 is preferably integral with the battery case 30.

As shown in fig. 20 to 22, the electric machine 1 includes a heating mechanism 50 that can heat the first housing chamber 9 and the second housing chamber 10. The heating mechanism 50 has a first heating portion 51 and a second heating portion 52. The first heating portion 51 is provided on the outer side surface of the right side member 16 (the outer side surface of the first housing chamber 9), and can heat the first housing chamber 9. The second heating portion 52 is provided on the outer side surface of the left side member 17 (the outer side surface of the second housing chamber 10) and can heat the second housing chamber 10. The first heating portion 51 and the second heating portion 52 are, for example, heating wires, and are provided so as to cover the first refrigerant pipe 45 and the second refrigerant pipe 46, respectively. In order to dispose and provide the rail member so that one heating portion or one refrigerant tube covers the entire housing chamber, the heating portion or the refrigerant tube must be disposed so as to avoid the rail member 18. As a result, the distance between the heating portion or the refrigerant tube and the housing chamber 8 increases, and the heating performance and the cooling performance may deteriorate. However, in the present embodiment, the first heating portion 51 and the second heating portion 52 are divided from the first refrigerant pipe 45 and the second refrigerant pipe 46, respectively, and the rail member 18 is disposed in the divided portion thereof, so that it is not necessary to distance the first heating portion 51 and the second heating portion 52 from the first refrigerant pipe 45 and the second refrigerant pipe 46 from the housing chamber 8, and therefore, it is possible to provide an electric machine capable of loading and unloading the partition plate 70 while maintaining heating property or cooling property.

The electric machine 1 includes a partition plate 70. As shown in fig. 1, the partition plate 70 divides the housing chamber 8 into a first housing chamber 9 and a second housing chamber 10 in a state of being attached to the main body 2. The user can load and unload the partition plate 70 to and from the housing chamber 8 along the recess 18B (fig. 25B) of the rail member 18.

As shown in fig. 27 (a) to (C) and fig. 28 (a) to (C), the partition plate 70 is divided into an upper partition plate 71 and a lower partition plate 72. As shown in fig. 27B and 28B, each of the top partition plate 71 and the bottom partition plate 72 has a heat insulating material 74 in the internal space (the internal space is filled with the heat insulating material 74). The butt joint 73 between the top partition plate 71 and the bottom partition plate 72 is a sleeve joint structure. That is, the upper partition plate 71 and the lower partition plate 72 are partially overlapped in position in the up-down direction, and the repeated portions approach or contact in the plane vertical direction. The insulation 74 extends into the interior of the socket. The partition plate 70 detached from the housing chamber 8 can be housed in a housing portion (not shown) detachably provided to the main body 2. The housing portion is not limited to housing the partition plate 70, and may house a battery, a smart phone, or the like, and is a size capable of housing the partition plate 70 in at least a divided state.

The top partition plate 71 and the bottom partition plate 72 function as a heat insulating material (heat insulating wall) between the first housing chamber 9 and the second housing chamber 10 in a state of being attached to the main body 2 (housing chamber 8) in combination with each other. As shown in fig. 26, the bottom partition plate 72 functions as a scattering preventing wall for the storage article 79 stored in the storage chamber 8 in a state of being attached to the storage chamber 8 alone without being combined with the top partition plate 71.

Fig. 29 (a) to (C) show structures of partition plates 170 that can be attached to the housing chamber 8 instead of the partition plate 70. The partition plate 170 has an upper partition plate 171 and a lower partition plate 172. The top partition plate 171 and the bottom partition plate 172 are connected to each other by a hinge mechanism 175 so as to be foldable. The respective inner spaces of the top separation plate 171 and the bottom separation plate 172 are filled with a heat insulating material 174. The butt portion 173 of the top partition plate 171 and the bottom partition plate 172 is a sleeve structure. The insulation 174 extends into the interior of the socket.

The electric machine 1 includes a setting unit 60. The setting portion 60 is provided at the right upper front end portion of the main body 2, and faces in the front-upper direction. The user can set the temperatures of the first storage chamber 9 and the second storage chamber 10 by the setting unit 60. For example, one of the first housing chamber 9 and the second housing chamber 10 may be frozen, and the other may be refrigerated, or one may be frozen, refrigerated, and the other may be heated, or one may be strongly heated, and the other may be weakly heated, or the other may be at room temperature. When the set temperatures of the first housing chamber 9 and the second housing chamber 10 are different, the partition plate 70 (or the partition plate 170) suppresses thermal movement between the first housing chamber 9 and the second housing chamber 10. In other words, by attaching the partition plate 70 (or the partition plate 170), the first housing chamber 9 and the second housing chamber 10 can be controlled to different temperatures from each other.

As shown in fig. 32 (a), the setting unit 60 includes a display unit 61, a right cabinet temperature setting button 62, a left cabinet temperature setting button 63, a mode switching button 64 (cabinet switching button), a power button 65, a USB device power-on switching button 66, and an execution button 67. The display unit 61 includes a remaining battery level display unit 61a, an external power connection display unit 61b, a USB device power-on display unit 61c, an error display unit 61d, a right-case-temperature display unit 61e, and a left-case-temperature display unit 61f. The display performed by the display unit 61 is controlled by the microcomputer 81 shown in fig. 34. The operation of each button is transmitted to the microcomputer 81.

As shown in fig. 33 (C), the battery state display portion 61a displays the state of the battery pack 29 mounted to the battery pack mounting portion 22 a. During charging of the battery pack 29, the battery state display unit 61a repeatedly performs display in which the remaining capacity is displayed in order of 1, 2, 3, and 4. When the charging of the battery pack 29 is completed, the battery state display portion 61a lights up four of the displays of the remaining capacities. When the electric machine 1 is operated with the electric power of the battery pack 29, the battery state display portion 61a blinks the remaining capacity display of the battery pack 29 in use, and the remaining capacity display of the unused battery pack 29 is lit. When the remaining capacity of the battery pack 29 is empty (equal to or less than the dischargeable threshold), the battery state display unit 61a turns on only the frame in which the remaining capacity is displayed.

As shown in fig. 33 (D), the external power connection display unit 61b is turned on when dc power is input from the outside through the power input terminal 28, and is turned off when this is not the case. As shown in fig. 33 (E), the USB device power-on display portion 61c is turned on when charging power is supplied to the device connected to the USB terminal 27, and is turned off when this is not the case. As shown in fig. 33 (F), the error display portion 61d blinks and displays an error code when an error occurs, and extinguishes when this is not the case. Examples of the error include an abnormality in the temperature of the compressor 41, an abnormality in the overcurrent, an abnormality in the input power supply (low voltage), and an abnormality in which the temperature setting is set to deviate from the temperature settable region.

The right cabinet temperature display unit 61e displays the set temperature or the current temperature of the first housing chamber 9. The left compartment temperature display portion 61f displays the set temperature or the current temperature of the second housing compartment 10. For example, the set temperature is displayed in a blinking manner, and the current temperature is displayed in a lighting manner, whereby the set temperature and the current temperature can be displayed in a distinguishable manner by the same display unit.

The right cabinet temperature setting button 62 is an operation unit for the user to switch the set temperature of the first housing chamber 9. The left cabinet temperature setting button 63 is an operation unit for the user to switch the set temperature of the second housing chamber 10. As shown in fig. 33 (B), with respect to the right cabinet temperature setting button 62 and the left cabinet temperature setting button 63, the set temperature increases by 5 ℃ when the upper part is pressed, and decreases by 5 ℃ when the lower part is pressed. For example, the initial set temperature is 10 ℃, the highest set temperature is 60 ℃, and the lowest set temperature is-18 ℃.

The mode switching button 64 is an operation portion for a user to switch the operation mode of the electric machine 1. The operation modes include a double-chamber mode in which the temperatures of the first storage chamber 9 and the second storage chamber 10 are individually controlled, a large-chamber single-chamber mode (right-chamber single-chamber mode) in which the temperatures of only the first storage chamber 9 side are controlled, a small-chamber single-chamber mode (left-chamber single-chamber mode) in which the temperatures of only the second storage chamber 10 side are controlled, and a single-chamber mode in which the temperatures of the first storage chamber 9 and the second storage chamber 10 are uniformly controlled. For example, the initial operation mode is a two-compartment mode, and each time the mode switching button 64 is pressed, the mode is changed in the order of the large compartment alone mode, the small compartment alone mode, and the single compartment mode.

As shown in fig. 32 (B), in the double-chamber mode, the right chamber temperature display portion 61e and the left chamber temperature display portion 61f display the set temperatures or the current temperatures of the first housing chamber 9 and the second housing chamber 10, respectively. As shown in fig. 32 (C), in the large-compartment independent mode, the right compartment temperature display portion 61e displays the set temperature or the current temperature of the first housing compartment 9, while the left compartment temperature display portion 61f is turned off. As shown in fig. 32 (D), in the small-compartment independent mode, the right compartment temperature display portion 61e is turned off, while the left compartment temperature display portion 61f displays the set temperature or the current temperature of the second housing compartment 10. As shown in fig. 32 (E), in the single-chamber mode, the right-chamber temperature display portion 61E displays the set temperature or the current temperature of the first and second storage chambers 9 and 10, and the left-chamber temperature display portion 61f is turned off. As shown in fig. 32 (C) and (E), the distinction between the large-compartment independent mode and the single-compartment mode is made by the presence or absence of lighting of the separation line between the right compartment temperature display portion 61E and the left compartment temperature display portion 61f (lighting: large-compartment independent mode, extinction: single-compartment mode).

The power button 65 is an operation unit for a user to switch the start and stop of the electric machine 1. The USB device power-on switching button 66 is an operation unit for a user to switch whether or not to supply charging power to a device connected to the USB terminal 27. The execution button 67 is a button for the user to determine the current set temperature and start operation based on the set temperature. The operation based on the set temperature may be started in conjunction with the user's operation of the operation unit by removing the execution button 67.

In the electric machine 1, the difference in the set temperatures of the first housing chamber 9 and the second housing chamber 10 is controlled to be within a predetermined value. This is a limit in consideration of the maximum temperature difference between the first housing chamber 9 and the second housing chamber 10 that can be achieved by the heat insulating effect of the partition plate 70 (or the partition plate 170). Fig. 32 (F) and (G) show: when the difference between the set temperatures of the first housing chamber 9 and the second housing chamber 10 is controlled to be 60 ℃ or less, the set temperature of the second housing chamber 10 is automatically changed to 50 ℃ when the set temperature of the first housing chamber 9 is changed to-10 ℃ from the state where the set temperature of the first housing chamber 9 is 0 ℃ and the set temperature of the second housing chamber 10 is 60 ℃.

When the difference between the set temperatures of the first housing chamber 9 and the second housing chamber 10 is set to be within 60 ℃, the microcomputer 81 switches the temperature settable region of the second housing chamber 10 from-18 ℃ to-60 ℃ to-18 ℃ to 50 ℃ when the set temperature of the first housing chamber 9 is switched from 0 ℃ to-10 ℃. At this time, the changed temperature settable region may be displayed on the left cabinet temperature display unit 61f, which is the display unit of the second housing chamber 10. Thus, the user can perform temperature setting after recognizing the temperature settable region. Even when the left cabinet temperature setting button 63 is operated to set the temperature of the second storage compartment 10 to be higher than 50 ℃ (the temperature deviation settable region), the display of the temperature deviation from the temperature setting range is not performed on the left cabinet temperature display unit 61 f. That is, even if the operation of increasing the set temperature from the 50 ℃ state is performed, the display of the set temperature is maintained at 50 ℃ without switching. The set temperature difference is not limited to 60 ℃. For example, the switching may be controlled based on the temperature of the outside air or the remaining amount of the battery.

Alternatively, the following control may be provided: although the display of the set temperature of the deviation-allowable temperature setting area is permitted, the operation cannot be started even if the execution button 67 is pressed. In this case, the user can be informed of the deviation of the set temperature from the temperature settable region by increasing the blinking speed of the set temperature display, performing an error display, or the like. The notification may be performed at the timing when the execution button 67 is pressed, or at the timing when the display of the set temperature that deviates from the temperature settable region is started. When the temperature settable region of one of the first housing chamber 9 and the second housing chamber 10 is narrower than the normal temperature (18 to 60 ℃), the temperature settable region (not shown) may be displayed on the other temperature display portion in addition to the set temperature.

As shown in fig. 33 (a), when the power button 65 is pressed and the electric machine 1 is started, the electric machine is in the two-compartment mode, which is the initial operation mode, and the right compartment temperature display portion 61e and the left compartment temperature display portion 61f flash to display the initial set temperature, that is, 10 ℃. After three seconds (after a predetermined time), the right case temperature display portion 61e and the left case temperature display portion 61f light up to display the current temperature. When either one of the right and left box temperature setting buttons 62 and 63 is pressed, the right and left box temperature display portions 61e and 61f flash to display the initial set temperature, that is, 10 ℃. The display of the set temperature is three seconds (a predetermined time) from the last depression of the right chamber temperature setting button 62 or the left chamber temperature setting button 63, and the set temperature is switched when the right chamber temperature setting button 62 or the left chamber temperature setting button 63 is depressed during this time.

While the right and left box temperature display portions 61e and 61f flash and display the initial set temperature, that is, 10 ℃, the set temperature display of the right box temperature display portion 61e is switched to-5 ℃ when the lower portion of the right box temperature setting button 62 is pressed three times. Subsequently, when the upper part of the left cabinet temperature setting button 63 is pressed ten times, the set temperature display of the left cabinet temperature display portion 61f is switched to 60 ℃, and the right cabinet temperature display portion 61e is switched to 0 ℃ by controlling the set temperature difference to be within 60 ℃. After three seconds, the right cabinet temperature display portion 61e and the left cabinet temperature display portion 61f are lit to display the current temperature.

When the mode switch button 64 is pressed, the mode is switched to the large-compartment independent mode, the display of the set temperature of the right compartment temperature display portion 61e is switched to 10 ℃, and the left compartment temperature display portion 61f is turned off. After three seconds, the right cabinet temperature display portion 61e and the left cabinet temperature display portion 61f are lit to display the current temperature. When the mode switch button 64 is pressed again, the operation is switched to the small-chamber single mode, the right-chamber temperature display portion 61e is turned off, and the set temperature display of the left-chamber temperature display portion 61f is switched to 10 ℃. After three seconds, the right cabinet temperature display portion 61e and the left cabinet temperature display portion 61f are lit to display the current temperature. When the mode switching button 64 is pressed again, the mode is switched to the single-chamber mode, the set temperature display of the right chamber temperature display portion 61e is switched to 10 ℃, the left chamber temperature display portion 61f is turned off, and the separation line between the right chamber temperature display portion 61e and the left chamber temperature display portion 61f is turned off.

Fig. 34 is a circuit block diagram of the electric machine 1. In the present figure, two battery packs 29 are divided into battery packs 29a and 29b. The DC power supply 90 is, for example, an alternating current (Alternating Current, AC) adapter, and is connected to an external alternating current power supply (not shown), converts alternating current power into direct current power (for example, direct current 12V), and supplies the direct current power to the power supply input terminal 28 of the electric machine 1. Alternatively, the DC power supply 90 is, for example, an in-vehicle power supply (in-vehicle battery), and supplies direct-current power to the power input terminal 28. The power supply input terminal 28 also functions as an in-vehicle power supply connection unit to which an in-vehicle power supply can be connected. The voltage of the in-vehicle power supply is, for example, about 12.5V to 14V, and varies depending on the state of the in-vehicle power supply, the length of the power line, and the like. The magnitude of the voltage drop at the time of current output from the vehicle-mounted power supply is also different depending on the state of the vehicle-mounted power supply, the length of the power supply line, and the like. When deterioration of the vehicle-mounted power supply is intensified, the internal resistance becomes high, and the voltage drop at the time of current output becomes also large. The compressor driving circuit 48 is provided on the compressor 41 side.

The electric machine 1 includes a microcomputer 81 as an operation control unit, a microcomputer 82 as a charge control unit, a control power supply 83, a rotation speed setting circuit 84, a shunt resistor 85, battery voltage detection circuits 86a and 86b, a DC power supply voltage detection circuit 86c as a state detection unit, a charging circuit 88, and a shunt resistor 89 on a control circuit board 80. The microcomputers 81 and 82 function as control units for controlling the supply of electric power to the compressor 41. The microcomputers 81, 82 may not be independent of each other, but may be a single microcomputer (microcontroller). The control power supply 83 converts an input voltage from the DC power supply 90 or the battery pack 29a or 29b into a power supply voltage (for example, 5V) of the microcomputers 81, 82 or the like, and supplies the power supply voltage to the microcomputers 81, 82 or the like. The battery voltage detection circuits 86a, 86b send detection signals corresponding to the voltages of the battery packs 29a, 29b, respectively, to the microcomputer 82. The DC power supply voltage detection circuit 86c transmits a detection signal corresponding to the voltage of the DC power supply 90 to the microcomputer 81.

The microcomputer 81 controls the overall operation related to cooling and heating of the electric machine 1. The microcomputer 81 controls the on/off of the switching element Q3 provided in the current path of the compressor driving circuit 48 to control the driving and stopping of the compressor 41. The microcomputer 81 transmits a rotation speed determination signal to the compressor driving circuit 48 via the rotation speed setting circuit 84, and controls the rotation speed of the compressor 41. As shown in fig. 35, the rotation speed setting circuit 84 includes resistors R1 to R3 having different resistances between rotation speed determination terminals connected in parallel to the compressor driving circuit 48, and switching elements Q6 to Q8 connected in series to the resistors R1 to R3, respectively. The switching elements Q6 to Q8 are selectively turned on, for example, in response to a rotation speed selection signal from the microcomputer 81. The voltage between the rotation speed determining terminals of the compressor driving circuit 48 is changed to determine the set rotation speed of the compressor 41 according to which of the switching elements Q6 to Q8 is turned on.

The microcomputer 81 receives an operation of the setting unit 60 as an electrical signal, and controls a display (display of the display unit 61) in the setting unit 60. The microcomputer 81 controls the opening and closing of the first and second adjustment valves 47a and 47b to control the flow of the refrigerant in the first and second refrigerant tubes 45 and 46. The microcomputer 81 controls on/off of the switching elements Q4, Q5 provided in the current paths of the first heating portion 51 and the second heating portion 52, respectively, to control driving of the first heating portion 51 and the second heating portion 52. The microcomputer 81 detects the temperatures (current temperatures) of the first housing chamber 9 and the second housing chamber 10 from the output signals of the first thermistor 55 and the second thermistor 56. The microcomputer 81 detects the driving current of the compressor 41 and the driving currents of the first heating portion 51 and the second heating portion 52 from the voltage of the shunt resistor 85. The shunt resistor 85 is a block that combines resistors connected in series with the switching elements Q3 to Q5, respectively. The microcomputer 81 detects the voltage of the DC power supply 90 based on the detection signal from the DC power supply voltage detection circuit 86 c.

The microcomputer 82 controls the charging of the battery packs 29a, 29b in the electric machine 1. The microcomputer 82 controls the charging voltage by control of the charging circuit 88. The charging circuit 88 converts an input voltage from the DC power supply 90 into a charging voltage of the battery pack 29a or 29b and supplies the charging voltage to the battery pack 29a or 29b (charges the battery pack 29a or 29 b) under control of the microcomputer 82. The microcomputer 82 controls on/off of the switching elements Q1, Q2 provided between the output terminal of the charging circuit 88 and the charging terminals (c+ terminals) of the battery packs 29a, 29b to determine which of the battery packs 29a, 29b is charged. Diodes D5 and D6 for preventing backflow are connected between the switching elements Q1 and Q2 and the microcomputer 82. The microcomputer 82 detects the voltages of the battery packs 29a, 29b based on the detection signals from the battery voltage detection circuits 86a, 86 b. The microcomputer 82 detects a charging current from the voltage of the shunt resistor 89 provided in the output current path of the charging circuit 88.

The microcomputer 82 controls the on/off of the relays S1, S2 as switches connected to the positive terminals (+terminals) of the battery packs 29a, 29b independently of the charge control to determine from which of the battery packs 29a, 29b the discharge is performed. When power is supplied from the DC power supply 90, the microcomputer 82 turns off the relays S1 and S2, and does not discharge the battery packs 29a and 29 b. Fuses F1 to F3 and diodes D1 to D3 for preventing backflow are connected to the positive terminals of the battery packs 29a and 29b and the DC power supply 90. The microcomputers 81, 82 can communicate with each other, and can share various information. For example, the microcomputer 82 can acquire voltage information of the DC power supply 90 through communication with the microcomputer 81.

Fig. 36 (a) is a time chart of the power supply selection when the DC power supply 90 is a normal vehicle-mounted power supply, the voltage of the DC power supply 90, and the driving current of the compressor. The normal in-vehicle power supply is an in-vehicle power supply in which degradation is not intensified, and is in a state of sufficiently having the capability required for starting the compressor 41. After the operation at time t11 is started, a large start-up current temporarily flows, and the voltage of the DC power supply 90 decreases. However, the voltage of the DC power supply 90 is not lower than 11V, which is a threshold value for switching the power supply source (hereinafter, referred to as a "switching threshold value to the battery") to the compressor 41 from the DC power supply 90 to the battery pack 29a or 29b, and the operation of the electric machine 1, which is the start-up of the compressor 41, can be performed. After a large starting current is temporarily supplied, the driving current of the compressor 41 is reduced to a value corresponding to the load. With this, the voltage of the DC power supply 90 also rises.

Fig. 36 (B) is a time chart of the power supply selection, the voltage of the DC power supply 90, and the driving current of the compressor 41 when the DC power supply 90 is degraded in the operation of the comparative example of the electric machine 1. The vehicle-mounted power supply, in which deterioration occurs, has a lower voltage than a normal vehicle-mounted power supply, and also has a large voltage drop when a current flows. The microcomputer 82 first selects the DC power supply 90 as the power supply source (turns off the relays S1, S2). After the operation at time t11 is started, a large start-up current temporarily flows, and the voltage of the DC power supply 90 decreases. At this time, the voltage of the DC power supply 90 becomes lower than 11V, which is the switching threshold to the battery. Thus, the microcomputer 81 determines that the operation of the electric machine 1 cannot be performed by the electric power of the DC power supply 90, and starts the stop process of the compressor 41. Further, the microcomputer 82 switches the power supply source to the battery pack 29a or 29b. The relays S1 and S2 correspond to the switching circuit in the present invention.

At time t13, the stop processing of the compressor 41 is completed, and the driving current of the compressor 41 becomes 0. At this time, the voltage of the DC power supply 90 is restored to a value higher than 12V, which is a threshold value at which the power supply source is switched from the battery pack 29a or 29b to the DC power supply 90 (hereinafter referred to as "switching threshold value to the in-vehicle power supply"). Therefore, the microcomputer 82 switches the power supply source from the battery pack 29a or 29b to the DC power supply 90, and tries again to start the compressor 41 by the power of the DC power supply 90 at time t 15. However, since the state of the DC power supply 90 is not changed, the compressor 41 cannot be started (the operation of the electric machine 1 cannot be performed) as in the case of the operation start at time t 11. The interval between times t13 and t15 is a waiting time required for protecting the compressor 41, for example, two minutes. Since the compressor 41 discharges the refrigerant, if the refrigerant is restarted immediately after the stop, the mechanism of the compressor 41 may be adversely affected depending on the state of the refrigerant. Accordingly, a waiting time is provided between the stop of the compressor 41 and the restart.

In this way, when the power supply source is switched to the DC power supply 90 only under the condition that the voltage of the DC power supply 90 is higher than 12V, there is a possibility that the cycle of failure in starting the compressor 41 by the power of the DC power supply 90, switching the power supply source to the battery pack 29a or 29b, switching the power supply source to the DC power supply 90 by the recovery of the voltage of the DC power supply 90, and failure in starting the compressor 41 by the power of the DC power supply 90 may occur, and the operation of the electric machine 1, which is the driving of the compressor 41, may be substantially impossible, and the cooling failure may occur. The operation of the electric machine 1 for solving such a problem is shown in fig. 37.

Fig. 37 is a time chart of the power supply selection when the DC power supply 90 is the vehicle-mounted power supply that has been degraded, the voltage of the DC power supply 90, the voltage of the battery pack 29a or 29b, the input voltage to the compressor driving circuit 48, and the driving current of the compressor 41 during the operation of the embodiment of the electric machine 1.

During the period a after the power button 65 is pressed, the microcomputer 82 selects the DC power supply 90 as the power supply source (sets the relays S1, S2 to be off). During the period B, the microcomputer 81 starts the compressor 41 with the power of the DC power supply 90, but stops the compressor 41 until the voltage of the DC power supply 90 drops below the operation stop threshold (for example, 11V) due to the start current of the compressor 41. The microcomputer 82 determines that the compressor 41 cannot be started by the DC power supply 90 (determines that the DC power supply 90 is not in use), and switches the power supply source to the battery pack 29a or 29b at the time C (opens the relay S1 or S2). The operation stop condition in the present invention corresponds to the voltage of the DC power supply 90 falling below the operation stop threshold value due to the start-up current of the compressor 41.

In the period D after the waiting time required for protecting the compressor 41 has elapsed since the stop of the compressor 41 in the period B, the microcomputer 81 starts the compressor 41 by using the electric power of the battery pack 29a or 29B, and the compressor 41 is successfully started because the voltage of the battery pack 29a or 29B is high, and the compressor 41 is driven by the electric power of the battery pack 29a or 29B at a predetermined time regardless of the voltage of the DC power supply 90. During this period, the voltage of the in-vehicle power supply increases due to, for example, running of the vehicle on which the in-vehicle power supply is mounted. At the time point E when the predetermined time elapses, the microcomputer 81 temporarily ends the driving of the compressor 41. Since the state of the in-vehicle power supply may change and become operable, the microcomputer 82 switches the power supply source to the DC power supply 90 again at the time F. The lapse of the predetermined time corresponds to the restart operation condition in the present invention. Further, if the voltage of the DC power supply 90 does not rise to the restart operation threshold (for example, 12V) or more after the lapse of the predetermined time, the compressor 41 may be continuously driven by the electric power of the battery pack 29a or 29b (without stopping the driving of the compressor 41). At this time, the restart operation condition becomes: when the predetermined time elapses and the voltage of the DC power supply 90 exceeds the restart operation threshold value.

At the time G after the waiting time required for the protection of the compressor 41 has elapsed from the time E, the microcomputer 81 starts the compressor 41 by using the electric power of the DC power supply 90. The voltage of the DC power supply 90 has risen as compared with the previous start-up by the electric power of the DC power supply 90, and at this time of start-up, the voltage of the DC power supply 90 is not lower than the operation stop threshold, and the start-up of the compressor 41 is successful. When the voltage of the DC power supply 90 also decreases to be less than the operation stop threshold value at the time of the start, the compressor 41 is stopped, the compressor 41 is driven for a predetermined time by the electric power of the battery pack 29a or 29b, and then the start of the compressor 41 by the electric power of the DC power supply 90 is attempted again.

In this way, when the power supply source is switched from the vehicle-mounted power source to the battery pack 29a or 29b based on the detection result of the DC power source voltage detection circuit 86c in a state in which the vehicle-mounted power source is connected to the power source input terminal 28 as the DC power source 90 and the battery pack 29a or 29b is connected to the battery pack mounting portion 22a, the microcomputer 82 maintains the supply of electric power from the battery pack 29a or 29b to the compressor 41 until a predetermined time elapses, regardless of whether or not the voltage of the DC power source 90 is higher than the switching threshold value to the vehicle-mounted power source. This can avoid the operation of the electric machine 1, which is a substantially impossible operation of the compressor 41, and suppress the cooling failure. That is, the problem in the operation of the comparative example shown in fig. 36 (B) can be preferably solved. The effect of substantially failing to operate the electric machine can be avoided even when the output unit is not the compressor 41 (for example, a motor other than the compressor) or the electric machine is not the cold/warm box. The in-vehicle power supply connection unit 28 corresponds to a first power supply source in the present invention, and the battery pack attachment unit 22a corresponds to a second power supply source in the present invention.

The prescribed time is longer than the waiting time required for the protection of the compressor 41. Therefore, the interval for determining whether the DC power supply 90 is usable or not is longer than the waiting time required for the protection of the compressor 41 based on the detection result of the DC power supply voltage detection circuit 86.

The predetermined time may be a time until the user stops the operation of the compressor 41, that is, until the user presses the power button 65. In other words, when the DC power supply 90 is determined to be unusable based on the detection result of the DC power supply voltage detection circuit 86, the microcomputer 82 may prohibit the supply of electric power from the DC power supply 90 to the compressor 41 until the stop operation of the compressor 41 is performed by the user. At this time, when the plug is detected to be inserted into or removed from the power input terminal 28, an attempt may be made to start the compressor 41 by using the electric power of the DC power supply 90.

The microcomputer 81 may notify the user by flashing the external power connection display portion 61b or the like when the power supply source is not the DC power supply 90 although the DC power supply 90 is connected to the power input terminal 28. Thus, the user can recognize that the electric machine 1 is not operated or the battery pack 29a or 29b has become the power supply source due to the poor state of using the in-vehicle power supply as the DC power supply 90, and thus the convenience is high.

As a modification of the operation of fig. 37, when the DC power supply 90 is determined to be unusable based on the detection result of the DC power supply voltage detection circuit 86, the microcomputer 82 may switch the power supply source from the DC power supply 90 to the battery pack 29a or 29b without stopping the driving of the compressor 41. Specifically, at the end of the period B, the relay S1 or S2 may be turned on without stopping the driving of the compressor 41, and the power supply source may be switched to the battery pack 29a or 29B to continue the driving of the compressor 41.

Fig. 38 is a flowchart showing a main routine of the electric machine 1. When the power button 65 is pressed, the control power source 83 is raised, and the microcomputers 81 and 82 are started (S1). The microcomputer 81, 82 executes the power supply selection routine shown in fig. 39 (S2). The microcomputer 81 reads the set temperature selected by the setting unit 60 (S5), reads the output signals of the first thermistor 55 and the second thermistor 56 (the first housing chamber 9 and the second housing chamber 10) (S6), and executes control in the operation mode selected by the setting unit 60 (any one of S7 to S10).

Fig. 39 is a flowchart showing the power supply selection routine (S2) of fig. 38. The microcomputer 82 executes a DC power supply state determination routine (S3) when power is supplied from the DC power supply 90 (yes in S2 a) and at least one of the battery packs 29a, 29b is connected (yes in S2 b). When the battery priority flag is not on (no in S2 c), the microcomputer 82 executes a charging routine shown in fig. 41 (S4), and sets the power supply source to the DC power supply 90 (S2 d). In the case where the battery priority flag is on (yes in S2 c), the microcomputer 82 sets the power supply source to the battery pack 29a or 29b (S2 e). When no power is supplied from the DC power supply 90 (no in S2 a), the microcomputer 82 sets the power supply source as the battery pack 29a or 29b (S2 e). When both the battery packs 29a and 29b are not connected (no in S2 b), the microcomputer 82 sets the power supply source to the DC power supply 90 (S2 d). When the power supply source is decided, the power supply selection routine ends.

Fig. 40 is a flowchart showing the DC power state discrimination routine (S3) of fig. 39. The power state discrimination routine is a routine for setting activation and deactivation of the battery priority flag. The battery priority flag is enabled in an initial state. That is, the battery priority flag becomes deactivated according to the power supply disconnection.

When the voltage of the DC power supply 90 falls below the switching threshold to the battery at the time of motor start of the compressor 41 (yes at S3 b) in the case where the battery priority flag is not enabled (no at S3 a), the microcomputer 81 sets the battery priority flag to be enabled (S3 c), ending the DC power supply state discrimination routine. When the voltage of the DC power supply 90 does not drop below the threshold value for switching to the battery at the time of motor activation of the compressor 41 in S3b (no in S3 b), the microcomputer 81 ends the DC power supply state determination routine without changing the battery priority flag from off.

When the battery priority flag is on (yes in S3 a), the microcomputer 81 sets the battery priority flag to off (S3 e) and ends the DC power state determination routine when fifteen minutes, which is an example of a predetermined time elapsed from when the battery priority flag is on (yes in S3 d). When fifteen minutes have not elapsed since the battery priority flag was changed to on in S3d (no in S3 d), the microcomputer 81 ends the DC power state determination routine without changing the battery priority flag from on.

Proceeding to yes in S3b, the condition that the battery priority flag is set to on may also be that, instead of the voltage of the DC power supply 90 dropping below or in addition to the switching threshold to the battery, there is no detection of the driving current of the compressor 41. At this time, the following structure is adopted: the battery priority flag is set to on in accordance with detection of the failure of the motor of the compressor 41 to start up by the driving current of the compressor 41. At this time, the battery priority flag may be set to on when a state in which the driving current of the compressor 41 cannot be detected is detected for a predetermined time (for example, thirty seconds). Alternatively, the condition for advancing to yes in S3b and setting the battery priority flag to on may be that the driving current of the compressor 41 is excessively large (exceeds a prescribed value). When the voltage of the DC power supply 90 is low, the current increases in order to secure electric power. Thus, an excessive drive current of the compressor 41 indicates that the voltage of the DC power supply 90 does not reach a desired value.

Proceeding to yes in S3d, the condition to set the battery priority flag to inactive may also be: the voltage of the DC power supply 90 has risen to a voltage (a predetermined voltage higher than the switching threshold to the in-vehicle power supply) that can withstand the start of the compressor 41 or more. This voltage is a voltage that is high enough not to fall below the threshold value of switching to the battery even if a voltage drop due to the start-up current of the compressor 41 is caused, for example, 15.5V.

Fig. 41 is a flowchart showing a specific operation of the charging routine (S4 of fig. 38) of the electric machine 1. The microcomputer 82 selects a connection port (port 1) of the battery pack 29a (S11), and if the battery pack 29a is chargeable (yes at S12), the battery pack 29a is charged (S13). When the charging of the battery pack 29a is completed (yes in S14), the microcomputer 82 selects the connection port (port 2) of the battery pack 29b (S15), and if the battery pack 29b is chargeable (yes in S16), the battery pack 29b is charged (S17). The microcomputer 82 recognizes the charged battery packs 29a, 29b as dischargeable (S19).

Fig. 42 is a flowchart showing a specific operation of the large compartment alone mode (S7 of fig. 38) of the electric machine 1. The microcomputer 81 reads the set temperature of the first housing chamber 9 (S21), and reads the output signal of the first thermistor 55 (the current temperature of the first housing chamber 9) (S22). When the current temperature of the first housing chamber 9 is higher than the set temperature +2deg.C (YES in S23), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,500rpm (S24). The microcomputer 81 sets the first adjustment valve 47a to be open (on) and the second adjustment valve 47b to be closed (off) (S25), and then drives the compressor 41 (S26). When the current temperature of the first storage chamber 9 is not higher than the set temperature +2deg.C in S23 (NO in S23), the microcomputer 81 drives the first heating unit 51 and stops the second heating unit 52 if the current temperature of the first storage chamber 9 is lower than the set temperature-2deg.C (YES in S27).

Fig. 43 is a flowchart showing a specific operation of the small compartment alone mode (S8 in fig. 38) of the electric machine 1. The microcomputer 81 reads the set temperature of the second housing chamber 10 (S31), and reads the output signal of the second thermistor 56 (the current temperature of the second housing chamber 10) (S32). When the current temperature of the second housing chamber 10 is higher than the set temperature +2deg.C (YES in S33), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000rpm (S34). The microcomputer 81 sets the second adjustment valve 47b to be open (on), sets the first adjustment valve 47a to be closed (off) (S35), and then drives the compressor 41 (S36). When the current temperature of the second storage chamber 10 is not higher than the set temperature +2deg.C in S33 (NO in S33), the microcomputer 81 stops the first heating unit 51 and drives the second heating unit 52 if the current temperature of the second storage chamber 10 is lower than the set temperature-2deg.C (YES in S37).

Fig. 44 is a flowchart showing a specific operation of the electric machine 1 in the single-compartment mode (S9 in fig. 38). The microcomputer 81 reads the set temperature as the single-chamber mode (S41), and reads the output signal of the first thermistor 55 (the current temperature of the first housing chamber 9) (S42). When the current temperature of the first housing chamber 9 is higher than the set temperature +2deg.C (YES in S43), the microcomputer 81 sets the rotation speed of the compressor 41 to 3,000rpm (S44). The microcomputer 81 sets the first regulator valve 47a and the second regulator valve 47b to open (open) (S45), and then drives the compressor 41 (S46). When the current temperature of the first storage chamber 9 is not higher than the set temperature +2deg.C in S43 (NO in S43), the microcomputer 81 drives the first heating unit 51 and the second heating unit 52 if the current temperature of the first storage chamber 9 is lower than the set temperature-2deg.C (YES in S47). In S42, S43, and S47, the current temperature may be used by using the output signal of the second thermistor 56 (the current temperature of the second housing chamber 10), or by calculating the average of the current temperatures of the first housing chamber 9 and the second housing chamber 10 from both the output signals of the first thermistor 55 and the second thermistor 56.

Fig. 45 is a flowchart showing a specific operation of the two-compartment mode (S10 of fig. 38) of the electric machine 1. The microcomputer 81 reads the set temperatures of the first housing chamber 9 and the second housing chamber 10 (S51), and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first housing chamber 9 and the second housing chamber 10) (S52). When the current temperature of the first housing chamber 9 is higher than the set temperature +2deg.C (YES in S53), the microcomputer 81 sets the rotation speed of the compressor 41 to 3,000rpm (S55) when the current temperature of the second housing chamber 10 is higher than the set temperature +2deg.C (YES in S54). The microcomputer 81 sets the first regulator valve 47a and the second regulator valve 47b to open (open) (S56), and then drives the compressor 41 (S57). The microcomputer 81 sets the rotation speed of the compressor 41 to 2,500rpm (S58) when the current temperature of the second housing chamber 10 is not higher than the set temperature +2deg.C in S54 (NO in S54). The microcomputer 81 sets the first adjustment valve 47a to be open (on) and the second adjustment valve 47b to be closed (off) (S59), and then drives the compressor 41 (S60). If the current temperature of the second housing chamber 10 is lower than the set temperature-2 ℃ (yes in S74), the microcomputer 81 stops the first heating section 51 and drives the second heating section 52 (S75).

When the current temperature of the first housing chamber 9 is not higher than the set temperature +2deg.C in S53 (NO in S53), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000rpm (S63) when the current temperature of the first housing chamber 9 is lower than the set temperature-2deg.C (YES in S61) and the current temperature of the second housing chamber 10 is higher than the set temperature +2deg.C (S62). The microcomputer 81 sets the first adjustment valve 47a to be closed (blocked) and the second adjustment valve 47b to be opened (opened) (S64), and then drives the compressor 41 (S65). On the other hand, the microcomputer 81 drives the first heating section 51 and stops the second heating section 52 (S66). When the current temperature of the second storage chamber 10 is not higher than the set temperature +2deg.C in S62 (NO in S62), the microcomputer 81 drives the first heating unit 51 and the second heating unit 52 if the current temperature of the second storage chamber 10 is lower than the set temperature-2deg.C (YES in S67). When the current temperature of the second housing chamber 10 is not lower than the set temperature of-2 ℃ in S67, the microcomputer 81 drives the first heating unit 51 and stops the second heating unit 52 (S69).

When the current temperature of the first housing chamber 9 is not lower than the set temperature of-2 ℃ in S61 (no in S61), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000rpm if the current temperature of the second housing chamber 10 is higher than the set temperature +2% (yes in S70). The microcomputer 81 sets the first adjustment valve 47a to be closed (blocked) and the second adjustment valve 47b to be opened (opened) (S72), and then drives the compressor 41 (S73). When the current temperature of the second storage chamber 10 is not higher than the set temperature +2deg.C in S70 (NO in S70), the microcomputer 81 stops the first heating unit 51 and drives the second heating unit 52 if the current temperature of the second storage chamber 10 is lower than the set temperature-2deg.C (YES in S74).

In the cooling control of the first storage chamber 9, the microcomputer 81 stops the opening of the first regulator valve 47a and the driving of the compressor 41 when the current temperature of the first storage chamber 9 is lower than the set temperature by a predetermined value (for example, 2 ℃). In order to prevent the first heating portion 51 from being driven immediately after the opening of the first adjustment valve 47a and the driving of the compressor 41 are stopped, a waiting time may be set from the opening of the first adjustment valve 47a and the driving of the compressor 41 are stopped until the judgment of whether or not to drive the first heating portion 51.

Similarly, in the cooling control of the second storage chamber 10, the microcomputer 81 stops the opening of the second regulator valve 47b and the driving of the compressor 41 when the current temperature of the second storage chamber 10 is lower than the set temperature by a predetermined value (for example, 2 ℃). In order to prevent the second heating portion 52 from being driven immediately after the opening of the second regulator valve 47b and the driving of the compressor 41 are stopped, a waiting time may be set from the opening of the second regulator valve 47b and the driving of the compressor 41 are stopped until the judgment of whether or not to drive the second heating portion 52.

In the heating control of the first storage chamber 9, the microcomputer 81 stops the driving of the first heating unit 51 when the current temperature of the first storage chamber 9 is higher than the set temperature by a predetermined value (for example, 2 ℃). In order to prevent the cooling control of the first storage chamber 9 from being started immediately after the stop of the first heating portion 51, a waiting time may be set in a period from the stop of the first heating portion 51 until the judgment of whether or not to start the cooling control of the first storage chamber 9.

Similarly, in the heating control of the second storage chamber 10, the microcomputer 81 stops the driving of the second heating unit 52 when the current temperature of the second storage chamber 10 is higher than the set temperature by a predetermined value (for example, 2 ℃). In order to prevent the start of the cooling control of the second storage chamber 10 immediately after the stop of the second heating portion 52, a waiting time may be set in a period from the stop of the second heating portion 52 until the judgment of whether or not to start the cooling control of the second storage chamber 10.

In fig. 42 to 45, 2,500rpm is an example of the maximum driving strength (first strength) of the compressor 41 according to the size of the first housing chamber 9. 2,000rpm is an example of the maximum driving strength (second strength) of the compressor 41 according to the size of the second housing chamber 10. 3,000rpm is an example of the maximum driving strength (third strength) of the compressor 41 corresponding to the total size of the first housing chamber 9 and the second housing chamber 10. That is, the microcomputer 81 switches the driving state (maximum driving strength) of the compressor 41 according to the size of the housing chamber to be cooled. The microcomputer 81 can perform control to switch the driving state after switching the opening/closing state of the adjustment valve 87 when the driving state is raised, and perform control to switch the opening/closing state of the adjustment valve 87 after switching the driving state when the driving state is lowered.

Fig. 46 is a graph showing time-varying changes in the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotational speed of the compressor 41 when the operation is performed in the two-chamber mode with the set temperature of the first storage chamber 9 set to 10 ℃ and the set temperature of the second storage chamber 10 set to-18 ℃. At the beginning of the operation, the temperatures of the first storage chamber 9 and the second storage chamber 10 were set to about 30 ℃, and the control of S55 to S57 in fig. 45 was performed, whereby the compressor 41 was driven at 3,000rpm. Thereby, the temperatures of the first housing chamber 9 and the second housing chamber 10 decrease. When the temperature of the first housing chamber 9 becomes 8 ℃ in the vicinity of eight minutes, the control of S71 to S73 in fig. 45 is performed, and the cooling of the first housing chamber 9 is stopped (the cooling is changed to the cooling of only the second housing chamber 10), and the rotation speed of the compressor 41 is reduced to 2,000rpm. When the temperature of the first housing chamber 9 exceeds 12 ℃ in the vicinity of fifteen minutes, the control of S55 to S57 in fig. 45 is performed, and cooling of the first housing chamber 9 is restarted, and the rotation speed of the compressor 41 is increased to 3,000rpm. Thereafter, the same operation is repeated, the temperature of the first housing chamber 9 is kept around 10 ℃, and the temperature of the second housing chamber 10 is lowered toward-18 ℃.

Fig. 47 is a graph showing time variations in the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotational speed of the compressor 41 when the operation is performed in the two-chamber mode with the set temperature of the first storage chamber 9 set at-18 ℃ and the set temperature of the second storage chamber 10 set at 10 ℃. At the beginning of the operation, the temperatures of the first storage chamber 9 and the second storage chamber 10 were set to about 30 ℃, and the control of S55 to S57 in fig. 45 was performed, whereby the compressor 41 was driven at 3,000rpm. Thereby, the temperatures of the first housing chamber 9 and the second housing chamber 10 decrease. When the temperature of the second housing chamber 10 becomes 8 ℃ in the vicinity of eight minutes, the control of S58 to S60 in fig. 45 is performed, and the cooling of the second housing chamber 10 is stopped (the cooling is changed to the cooling of only the first housing chamber 9), and the rotation speed of the compressor 41 is reduced to 2,500rpm. When the temperature of the second housing chamber 10 exceeds 12 ℃ in the vicinity of fifteen minutes, the control of S55 to S57 in fig. 45 is performed, the cooling of the second housing chamber 10 is restarted, and the rotation speed of the compressor 41 is increased to 3,000rpm. Thereafter, the same operation is repeated, the temperature of the second housing chamber 10 is kept around 10 ℃, and the temperature of the first housing chamber 9 is lowered toward-18 ℃.

Fig. 48 is a time chart of the input voltage to the compressor 41, the rotation speed of the compressor 41, the opening/closing signals of the first adjustment valve 47a and the second adjustment valve 47b, the start/closing of the first heating unit 51 and the second heating unit 52, and the temperatures of the first housing chamber 9 and the second housing chamber 10. The first adjustment valve 47a and the second adjustment valve 47b use solenoid valves that apply pulse signals only when switching between open and closed.

At time t0, the temperatures of the first storage chamber 9 and the second storage chamber 10 are 30 ℃, and the microcomputer 81 performs the control of S55 to S57 in fig. 45. That is, the microcomputer 81 outputs a valve opening/closing signal that sets both the first adjustment valve 47a and the second adjustment valve 47b to an open state, and then drives the compressor 41 at 3,000 rpm. At time t1, when the temperature of the second housing chamber 10 becomes 8 ℃, the microcomputer 81 performs the control of S58 to S60 in fig. 45. That is, the microcomputer 81 outputs a valve opening/closing signal that sets the first adjustment valve 47a to an open state and sets the second adjustment valve 47b to a closed state, and then drives the compressor 41 at 2,500 rpm. At time t2, when the temperature of the second housing chamber 10 becomes 12 ℃, the microcomputer 81 performs the control of S55 to S57 in fig. 45. That is, the microcomputer 81 outputs a valve opening/closing signal that sets both the first adjustment valve 47a and the second adjustment valve 47b to an open state, and then drives the compressor 41 at 3,000 rpm.

At time t3, when the temperature of the second housing chamber 10 becomes 8 ℃, the microcomputer 81 outputs a valve opening/closing signal that sets the first adjustment valve 47a to an open state and sets the second adjustment valve 47b to a closed state, as in the control at time t1, and then drives the compressor 41 at 2,500 rpm. At time t3, the cooling control of the second storage chamber 10 is temporarily stopped, but the temperature of the second storage chamber 10 is still lowered after time t3 due to the movement of heat toward the first storage chamber 9 having a lower temperature. At time t4 when the predetermined time has elapsed from time t3, the microcomputer 81 starts driving the second heating unit 52 (S75 in fig. 45). Thereby, the temperature of the second housing chamber 10 is increased. At time t5, when the temperature of the second housing chamber 10 becomes 12 ℃, the microcomputer 81 stops the second heating unit 52 and controls S55 to S57 in fig. 45. That is, the microcomputer 81 outputs a valve opening/closing signal that sets both the first adjustment valve 47a and the second adjustment valve 47b to an open state, and then drives the compressor 41 at 3,000 rpm. The microcomputer 81 performs the same control as the time t3 to t5 at the time t6 to t 8.

According to the present embodiment, the following effects can be achieved.

(1) Since the control circuit board 80 on which the charging circuit 88 is mounted and the fan 49 are housed in the second main body 4, the charging circuit 88 can be cooled efficiently.

(2) Since the fan air generated by the fan 49 is branched into the first air passage 33 for cooling the cooling mechanism 40 (particularly, the condenser 42) and the second air passage 34 for cooling the control circuit board 80 by the branching portion 32, the cooling mechanism 40 and the control circuit board 80 can be cooled with good efficiency by fresh air, respectively.

(3) By integrating the branch portion 32 with the battery case 30, the influence on the assembly process due to the provision of the branch portion 32 can be suppressed.

(4) Since the first refrigerant pipe 45 is provided on the side surface of the first housing chamber 9 and the second refrigerant pipe 46 is provided on the side surface of the second housing chamber 10, the temperature can be adjusted individually over a wide range including the upper portions of the first housing chamber 9 and the second housing chamber 10, as compared with the configuration in which the refrigerant pipe is provided on the bottom surface, and convenience is improved. The effect is remarkable by providing the first refrigerant pipe 45 on the three sides of the first housing chamber 9 and providing the second refrigerant pipe 46 on the three sides of the second housing chamber 10.

(5) Since the first adjustment valve 47a is provided in the first refrigerant pipe 45 and the second adjustment valve 47b is provided in the second refrigerant pipe 46, the flow of the refrigerant in the first refrigerant pipe 45 and the second refrigerant pipe 46 can be individually adjusted, and the temperatures of the first storage chamber 9 and the second storage chamber 10 can be individually adjusted. Thus, one of the first housing chamber 9 and the second housing chamber 10 can be frozen and the other can be refrigerated, thereby improving convenience.

(6) Since the first heating portion 51 for heating the first housing chamber 9 and the second heating portion 52 for heating the second housing chamber 10 are provided, not only cooling but also heating can be performed, and convenience is improved. Further, convenience can be improved by setting one of the first housing chamber 9 and the second housing chamber 10 to be frozen or refrigerated and the other to be heated, or setting one to be strongly heated and the other to be weakly heated.

(7) The microcomputer 81 also operates the first heating unit 51 or the second heating unit 52 as necessary in the process of controlling the first housing chamber 9 and the second housing chamber 10 to a temperature lower than the outside air temperature. Therefore, for example, when the difference between the set temperatures of the first housing chamber 9 and the second housing chamber 10 is large, and the temperature of one of the first housing chamber 9 and the second housing chamber 10 is lower than the set temperature and further decreases due to movement of heat toward the other, the other can be prevented from deviating downward from the set temperature by heating the other.

(8) The microcomputer 81 also operates the cooling mechanism 40 as necessary in the process of controlling the first housing chamber 9 and the second housing chamber 10 to a temperature higher than the outside air temperature. Therefore, for example, when the difference between the set temperatures of the first housing chamber 9 and the second housing chamber 10 is large and the temperature of one of the high set temperatures of the first housing chamber 9 and the second housing chamber 10 is further increased by the movement of heat from the other one exceeding the set temperature, the other one can be prevented from being upwardly deviated from the set temperature by cooling the other one.

(9) Since the microcomputer 81 switches the maximum driving strength of the compressor 41 according to the size of the housing chamber to be cooled, the compressor 41 can be driven with a strength corresponding to the size of the housing chamber, and the burden on the compressor 41 can be reduced, and the life of the compressor 41 can be prolonged. Specifically, for example, when only the second housing chamber 10 is cooled, if the rotation speed of the compressor 41 is 2,500rpm or 3,000rpm, the rotation speed is too high (the driving strength is too high), and a phenomenon may occur in which the refrigerant returns to the compressor 41 in a liquid state. If the refrigerant returns to the compressor 41 while being kept in a liquid state, an excessive load is applied to the compressor 41, and the life of the compressor 41 is shortened. According to the present embodiment, this problem can be preferably solved.

(10) Since the first adjustment valve 47a and the second adjustment valve 47b are provided in the portions of the first refrigerant pipe 45 and the second refrigerant pipe 46 where the refrigerant flows in a gaseous state, the refrigerant is sent out to the first refrigerant pipe 45 and the second refrigerant pipe 46 by the single compressor 41, and even when the electric machine 1 is in an inclined state, the deviation of the flow of the refrigerant due to the inclination can be suppressed. This can suppress the phenomenon that the refrigerant flows in a deviated manner to either the first refrigerant pipe 45 or the second refrigerant pipe 46, and can suppress insufficient cooling of either the first housing chamber 9 or the second housing chamber 10. Thus, the temperature of the first storage chamber 9 and the second storage chamber 10 can be prevented from deviating from the set temperature.

(11) The microcomputer 81 controls the set temperature difference between the first housing chamber 9 and the second housing chamber 10 to be within a predetermined value. Therefore, the set temperature difference can be suppressed from exceeding the maximum temperature difference between the first housing chamber 9 and the second housing chamber 10 which can be achieved by the heat insulating effect by the partition plate 70 (or the partition plate 170). This can suppress the risk that the temperatures of the first storage chamber 9 and the second storage chamber 10 cannot be brought to the set temperature.

(12) When the set temperature of one of the first housing chamber 9 and the second housing chamber 10 is changed so that the set temperature difference exceeds a predetermined value, the microcomputer 81 automatically changes the set temperature of the other so that the set temperature difference falls within the predetermined value, which results in high convenience.

(13) The partition plate 70 has a one-to-two structure, and is therefore convenient to carry and store, as compared with the case of one plate. Further, the partition plate 170 is configured to be foldable, and thus, it is convenient to carry or store as compared with the case of one plate.

(14) The partition plate 70 is divided into the top partition plate 71 and the bottom partition plate 72, and as shown in fig. 26, the bottom partition plate 72 can be attached to use a scattering preventing wall as the storage 79 stored in the storage chamber 8, so that convenience is high.

(15) Since the abutting portion 73 of the top partition plate 71 and the bottom partition plate 72 has a sleeve structure, and the heat insulating material 74 extends to the inside of the sleeve structure, thermal movement between the first housing chamber 9 and the second housing chamber 10 can be suppressed. Similarly, the abutting portion 173 of the top partition plate 171 and the bottom partition plate 172 has a sleeve structure, and the heat insulating material 174 extends to the inside of the sleeve structure, so that thermal movement between the first housing chamber 9 and the second housing chamber 10 can be suppressed.

(16) The rail member 18 is configured to guide the attachment of the partition plate 70 (or the partition plate 170) by the recess 18b, and does not protrude inward from the inner surface of the housing chamber 8. Therefore, the reduction in the volume of the housing chamber 8 due to the structure for guiding the partition plate 70 (or the partition plate 170) can be suppressed. The rail member 18 protrudes outward from the outer surface of the housing chamber 8, but the first refrigerant tube 45 and the second refrigerant tube 46 are wound around the housing chamber 8 while being separated from the left and right sides of the rail member 18, and therefore, the arrangement of the first refrigerant tube 45 and the second refrigerant tube 46 is limited in influence.

(17) The microcomputer 82 is configured to maintain the supply of electric power from the battery pack 29a or 29b to the compressor 41 for a predetermined time when the electric power supply source is switched from the vehicle-mounted power supply to the battery pack 29a or 29b based on the detection result of the DC power supply voltage detection circuit 86c in a state in which the vehicle-mounted power supply is connected to the power supply input terminal 28 as the DC power supply 90 and the battery pack 29a or 29b is connected to the battery pack mounting portion 22 a. Thus, unlike the case where the power supply source is switched to the DC power supply 90 only under the condition that the voltage of the DC power supply 90 is higher than 12V, it is possible to avoid the unnecessary switching of the power supply source repeatedly between the DC power supply 90 and the battery pack 29a or 29b, and the operation of the electric machine 1, which is the driving of the compressor 41, is substantially impossible, and it is possible to suppress the cooling failure.

The electric machine 1 is configured such that the first refrigerant pipe 45 and the second refrigerant pipe 46 are sent out by the single compressor 41 (the first housing chamber 9 and the second housing chamber 10 are cooled), but when the refrigerant is to be sent out to the first refrigerant pipe 45 and the second refrigerant pipe 46 at the same time (the first housing chamber 9 and the second housing chamber 10 are cooled), the temperatures of the first housing chamber 9 and the second housing chamber 10 may deviate from the set temperatures (both chambers cannot reach the set temperatures) due to a difference in diameter dimension of the first refrigerant pipe 45 and the second refrigerant pipe 46 or a difference in length due to a difference in winding methods of the first refrigerant pipe 45 and the second refrigerant pipe 46, a dimensional error of a capillary (capillary) of two systems connected to the first refrigerant pipe 45 and the second refrigerant pipe 46, or the like.

To cope with this problem, the electric machine 1 may implement an alternate operation mode. The alternate operation mode is a mode in which alternate cooling is performed in which only the refrigerant flows to the first refrigerant pipe 45 and only the refrigerant flows to the second refrigerant pipe 46 repeatedly. In the alternate operation mode, the opening (opening) of the first regulator valve 47a and the opening (opening) of the second regulator valve 47b are not performed simultaneously.

Fig. 49 is a flowchart of an operation of the dual chamber mode in which the alternate operation mode is added to the dual chamber mode in fig. 45. In the present flowchart, after S52 in fig. 45, determination 1 (S521) and determination 2 (S522) for determining whether or not to shift to the alternate operation mode are added. When the conditions of both the determination 1 (S521) and the determination 2 (S522) are satisfied (yes in S521 and yes in S522), the microcomputer 81 shifts to the alternate operation mode (S523). The microcomputer 81 proceeds to S53 of fig. 45 when at least one of the conditions of discrimination 1 (S521) and discrimination 2 (S522) is not satisfied (no in S521 or no in S522).

Fig. 50 is an explanatory diagram of a specific example of the determination 1 (S521) in fig. 49. The criterion 1 is a first condition required for switching to the alternate operation mode, and is, for example, any one of the following modes. Type 1 … determination of whether or not the set temperature of at least one of the first and second storage chambers 9 and 10 is less than the predetermined temperature (for example, 0 ℃). Type 2 … determination of whether or not the set temperatures of the first and second storage chambers 9 and 10 are less than the predetermined temperature (for example, 0 ℃). If the result of determination 1 is yes, the process proceeds to determination 2 (S522).

Fig. 51 is an explanatory diagram of a specific example of the determination 2 (S522) in fig. 49. Discrimination 2 is a second condition required for transition to the alternate operation mode, and is, for example, any one of the following modes. Type 1 … determination of whether or not the temperature of at least one of the first and second storage chambers 9 and 10 is less than a predetermined temperature (for example, 0 ℃). Type 2 … a determination as to whether or not the temperatures of the first storage chamber 9 and the second storage chamber 10 are less than a predetermined temperature (for example, 0 ℃). Pattern 3 … determines whether or not cooling has been performed for a predetermined time (for example, twenty minutes) while simultaneously feeding the refrigerant (simultaneously cooling the first housing chamber 9 and the second housing chamber 10) to the first refrigerant pipe 45 and the second refrigerant pipe 46. Type 4, …, whether the outside air temperature exceeds a predetermined temperature (e.g., 35 ℃). Determination as to whether or not the drive current of the type 5 … compressor 41 exceeds a predetermined current value (for example, 8A). A determination as to whether or not the input voltage to the compressor 41 of the type 6 … is smaller than the predetermined voltage value (12V). Type 7 … determination of whether or not the temperature difference between the first and second storage chambers 9 and 10 exceeds a predetermined temperature difference (e.g., 2 ℃). If the determination 2 is yes, that is, if the first housing chamber 9 and the second housing chamber 10 are in the predetermined state, the simultaneous operation mode is changed from the simultaneous cooling operation mode to the alternate operation mode even if the temperatures of the first housing chamber 9 and the second housing chamber 10 are not set to the set temperature (S523).

In the discrimination 1 and 2, the specified temperature with respect to the set temperature of the first storage chamber 9 and the second storage chamber 10 and the specified temperature with respect to the current temperature (the specified temperature) are temperatures that can be reliably reached as the temperatures of the first storage chamber 9 and the second storage chamber 10 even in the simultaneous operation mode. The predetermined temperature may be, for example, an outside air temperature of-20 ℃.

Fig. 52 is an explanatory diagram of a specific example of the determination 3 (S80) of fig. 53. The determination 3 is a determination or setting of which refrigerant is sent to the first refrigerant pipe 45 and the second refrigerant pipe 46 (which of the first housing chamber 9 and the second housing chamber 10 is cooled first) in the alternate operation mode, and is, for example, any one of the following types. In pattern 1 …, the refrigerant is first sent to the refrigerant pipe corresponding to the higher temperature of the first housing chamber 9 and the second housing chamber 10 (cooling is started from the high temperature chamber). Pattern 2 …, the refrigerant is first sent to the first refrigerant pipe 45 (cooling from the first housing chamber 9). Pattern 3 …, the refrigerant is first sent to the second refrigerant pipe 46 (cooling from the second housing chamber 10). In the determination 3, 1 is substituted into the flag when the refrigerant is sent to the first refrigerant pipe 45 (cooling is started from the first housing chamber 9), and 0 is substituted into the flag when the refrigerant is sent to the second refrigerant pipe 46 (cooling is started from the second housing chamber 10).

Fig. 53 is a flowchart showing a first version of the alternate operation mode (S523) of fig. 49. In the first mode of the alternate operation mode, when the temperature difference between the first housing chamber 9 and the second housing chamber 10 exceeds a predetermined temperature difference (for example, 2 ℃), the refrigerant pipe (the tank to be cooled) to be the delivery target of the refrigerant is switched. After the determination 3 (S81), if the flag is 0 (yes in S82), the microcomputer 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S83), and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first storage chamber 9 and the second storage chamber 10) (S84). When the current temperature of the second housing chamber 10 is lower than the set temperature (yes in S85), the microcomputer 81 stops the compressor 41 if the current temperature of the first housing chamber 9 is lower than the set temperature (yes in S86) (S87). The microcomputer 81 drives the second heating unit 52 when the current temperature of the second housing chamber 10 is lower than the set temperature of-2 ℃ (yes in S88), and stops the second heating unit 52 when this is not the case (no in S88) (S90). The microcomputer 81 substitutes 1 for the flag (S95), and confirms whether or not the discrimination 2 is satisfied (S96).

When the temperature of the first storage chamber 9 is not less than the set temperature in S86 (no in S86), the microcomputer 81 substitutes 1 for the flag (S95), and confirms whether or not the determination 2 is satisfied (S96).

When the current temperature of the second housing chamber 10 is not less than the set temperature in S85 (no in S85), the microcomputer 81 sets the first adjustment valve 47a to be closed (blocked) and the second adjustment valve 47b to be opened (opened) if the current temperature of the second housing chamber 10 is not less than the current temperature of the first housing chamber 9-2 ℃ (no in S91) (S92), sets the rotation speed of the compressor 41 to 2,000rpm (S93), and drives the compressor 41 (S94). Thereby, the refrigerant is sent to the second refrigerant pipe 46 (the refrigerant is not sent to the first refrigerant pipe 45). Subsequently, the microcomputer 81 confirms whether or not the discrimination 2 is satisfied (S96). If the current temperature of the second housing chamber 10 is lower than the current temperature of the first housing chamber 9 by-2 deg.c (yes in S91) in S91, the microcomputer 81 substitutes 1 for the flag (S95) and confirms whether the judgment 2 is satisfied (S96).

If the flag is 1 in S82 (no in S82), the microcomputer 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S103), and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first storage chamber 9 and the second storage chamber 10) (S104). When the current temperature of the first housing chamber 9 is lower than the set temperature (yes in S105), the microcomputer 81 stops the compressor 41 if the current temperature of the second housing chamber 10 is lower than the set temperature (yes in S106) (S107). The microcomputer 81 drives the first heating unit 51 when the current temperature of the first housing chamber 9 is lower than the set temperature of-2 ℃ (yes in S108), and stops the first heating unit 51 when this is not the case (no in S108) (S110). The microcomputer 81 substitutes 0 for the flag (S115), and confirms whether or not the discrimination 2 is satisfied (S96).

When the temperature of the second storage chamber 10 is not less than the set temperature in S106 (no in S106), the microcomputer 81 substitutes 0 for the flag (S115), and confirms whether or not the determination 2 is satisfied (S96).

When the current temperature of the first housing chamber 9 is not less than the set temperature in S105 (no in S105), the microcomputer 81 sets the first adjustment valve 47a to open (open) and the second adjustment valve 47b to close (shut) if the current temperature of the first housing chamber 9 is not less than the current temperature of the second housing chamber 10-2 ℃ (no in S111) (S112), sets the rotation speed of the compressor 41 to 2,500rpm (S113), and drives the compressor 41 (S114). Thereby, the refrigerant is sent out to the first refrigerant pipe 45 (the refrigerant is not sent out to the second refrigerant pipe 46). Subsequently, the microcomputer 81 confirms whether or not the discrimination 2 is satisfied (S96). If the current temperature of the first housing chamber 9 is lower than the current temperature of the second housing chamber 10 by-2 deg.c (yes in S111) in S111, the microcomputer 81 substitutes 0 for the flag (S115), and confirms whether the judgment 2 is satisfied (S96).

If the determination 2 is satisfied (yes in S96), the microcomputer 81 returns to S82, and if the determination 2 is not satisfied (no in S96), the alternate operation mode is terminated and returns to S51 in fig. 49.

In fig. 53, the microcomputer 81 can control to increase the output (rotation speed) of the compressor 41 after switching the open/close state of the adjustment valve 47 when switching the cooling target from the second housing chamber 10 to the first housing chamber 9, and can control to switch the open/close state of the adjustment valve 47 after reducing the output (rotation speed) of the compressor 41 when switching the cooling target from the first housing chamber 9 to the second housing chamber 10.

In fig. 53, when the set temperature of at least one of the first storage chamber 9 and the second storage chamber 10 is switched and the determination 2 is satisfied and the alternating operation mode is changed, the microcomputer 81 may send the refrigerant to only one of the refrigerant tubes corresponding to one of the storage chambers having a high current temperature. Subsequently, the microcomputer 81 may switch the refrigerant tube to be sent out of the refrigerant when the gradient of the temperature of the other housing chamber changes from negative to positive or when the temperature difference becomes a predetermined value (for example, 2 ℃) or more due to the inversion of the current temperature.

Fig. 54 is a flowchart showing a second version of the alternate operation mode (S523) of fig. 49. In the second mode of the alternate operation mode, a refrigerant pipe (a tank to be cooled) to be sent out of the refrigerant is switched according to time. In addition, in both the first housing chamber 9 and the second housing chamber 10, the rotation speed of the compressor 41 was set to 2,000rpm, and the cooling time per time was prolonged in the first housing chamber 9 having a large volume compared to the second housing chamber 10 having a small volume. The microcomputer 81 starts a timer after discriminating 3 (S81) (S122).

When the flag is 0 (yes in S123) and the elapsed time of the timer does not exceed 300 seconds, which is an example of the second predetermined time (no in S124), the microcomputer 81 reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S125), and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first storage chamber 9 and the second storage chamber 10) (S126).

When the current temperature of the second housing chamber 10 is lower than the set temperature (yes in S127), the microcomputer 81 stops the compressor 41 if the current temperature of the first housing chamber 9 is lower than the set temperature (yes in S128) (S129). The microcomputer 81 drives the second heating unit 52 when the current temperature of the second housing chamber 10 is lower than the set temperature of-2 ℃ (yes in S130), and stops the second heating unit 52 when it is not (no in S130) (S132). The microcomputer 81 substitutes 1 for the flag (S136), resets the timer (S137), and confirms whether or not the judgment 2 is satisfied (S138).

When the temperature of the first storage chamber 9 is not less than the set temperature in S128 (no in S128), the microcomputer 81 substitutes 1 for the flag (S136), resets the timer (S137), and confirms whether or not the determination 2 is satisfied (S138).

When the current temperature of the second storage chamber 10 is not less than the set temperature in S127 (no in S127), the microcomputer 81 sets the first adjustment valve 47a to be closed (blocked), sets the second adjustment valve 47b to be open (opened) (S133), sets the rotation speed of the compressor 41 to 2,000rpm (S134), and drives the compressor 41 (S135). Thereby, the refrigerant is sent to the second refrigerant pipe 46 (the refrigerant is not sent to the first refrigerant pipe 45). Subsequently, the microcomputer 81 confirms whether or not the discrimination 2 is satisfied (S138).

When the elapsed time of the timer exceeds 300 seconds in S124 (yes in S124), the microcomputer 81 substitutes 1 into the flag (S136), resets the timer (S137), and confirms whether or not the judgment 2 is satisfied (S138).

If the microcomputer 81 marks 1 in S123 (yes in S123) and the elapsed time of the timer does not exceed 450 seconds, which is an example of the first predetermined time (no in S144), the microcomputer reads the set temperatures of the first storage chamber 9 and the second storage chamber 10 (S145), and reads the output signals of the first thermistor 55 and the second thermistor 56 (the current temperatures of the first storage chamber 9 and the second storage chamber 10) (S146).

When the current temperature of the first housing chamber 9 is lower than the set temperature (yes in S147), the microcomputer 81 stops the compressor 41 if the current temperature of the second housing chamber 10 is lower than the set temperature (yes in S148) (S149). The microcomputer 81 drives the first heating unit 51 when the current temperature of the first housing chamber 9 is lower than the set temperature of-2 ℃. The microcomputer 81 substitutes 0 for the flag (S156), resets the timer (S157), and confirms whether or not the judgment 2 is satisfied (S138).

When the temperature of the second storage chamber 10 is not less than the set temperature in S148 (no in S148), the microcomputer 81 substitutes 0 for the flag (S156), resets the timer (S157), and confirms whether or not the determination 2 is satisfied (S138).

When the current temperature of the first storage chamber 9 is not less than the set temperature in S147 (no in S147), the microcomputer 81 turns on the first adjustment valve 47a, turns off the second adjustment valve 47b (on) (S153), sets the rotation speed of the compressor 41 to 2,000rpm (S154), and drives the compressor 41 (S155). Thereby, the refrigerant is sent out to the first refrigerant pipe 45 (the refrigerant is not sent out to the second refrigerant pipe 46). Subsequently, the microcomputer 81 confirms whether or not the discrimination 2 is satisfied (S138).

When the elapsed time of the timer exceeds 450 seconds in S144 (yes in S144), the microcomputer 81 substitutes 0 into the flag (S156), resets the timer (S157), and confirms whether or not the judgment 2 is satisfied (S138).

The microcomputer 81 returns to S123 when the determination 2 is satisfied (yes in S138), and returns to S51 of fig. 49 after ending the alternate operation mode when the determination 2 is not satisfied (no in S138).

In the second mode of the alternate operation mode, the rotation speed of the compressor 41 when cooling the first storage chamber 9 may be set to 2,500rpm, and the rotation speed of the compressor 41 when cooling the second storage chamber 10 may be set to 2,000rpm, and the cooling time may be set to be the same for each of the first storage chamber 9 and the second storage chamber 10. The pattern thus modified is set to the third pattern of the alternate operation mode.

Fig. 55 is a graph showing time variations between the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the third mode of operation is changed from the simultaneous operation mode to the alternate operation mode while setting the set temperatures of the first and second storage chambers 9 and 10 to-18 ℃. At 0 minutes, the temperatures of the first housing chamber 9 and the second housing chamber 10 were 30 ℃. The microcomputer 81 is in the simultaneous operation mode for a period of from 0 minutes to twenty minutes, and sets the rotation speed of the compressor 41 to 3,000rpm, and cools the first housing chamber 9 and the second housing chamber 10. The microcomputer 81 shifts to the alternate operation mode because the temperature of the second housing chamber 10 as the small chamber becomes less than 0 ℃ within twenty minutes. In the alternate operation mode, the microcomputer 81 starts cooling from the first housing chamber 9 (large chamber) having a high temperature, and then switches the cooling target chamber every 300 seconds. Thus, the temperatures of the first housing chamber 9 and the second housing chamber 10 approach the set temperature, i.e., -18 ℃. The rotation speed of the microcomputer 81 was set to 2,500rpm for the first housing chamber 9 and 2,000rpm for the second housing chamber 10.

In fig. 55, at the time point of twenty minutes, the cooling of the second housing chamber 10 is stopped, but the temperature of the second housing chamber 10 is reduced until about 22 minutes. This is caused by heat exchange between the low-temperature refrigerant remaining in the second refrigerant tube 46 and the second housing chamber 10. Similarly, even when the cooling of the first housing chamber 9 has stopped, the temperature of the first housing chamber 9 is reduced for several minutes. In this way, even if cooling of one of the chambers is stopped, the temperature drop of the one chamber continues for about several minutes after the cooling is stopped. The same applies to fig. 56 and 57.

Fig. 56 is a graph showing time-varying changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the second type of operation is changed from the simultaneous operation mode to the alternate operation mode while setting the set temperatures of the first and second storage chambers 9 and 10 to-18 ℃. At 0 minutes, the temperatures of the first housing chamber 9 and the second housing chamber 10 were 25 ℃. The microcomputer 81 is in the simultaneous operation mode during a period from 0 minutes to fifteen minutes, and sets the rotation speed of the compressor 41 to 3,000rpm, and cools the first housing chamber 9 and the second housing chamber 10. The microcomputer 81 shifts to the alternate operation mode because the temperatures of the first housing chamber 9 and the second housing chamber 10 become less than 0 ℃ within fifteen minutes. In the alternate operation mode, the microcomputer 81 switches the cooling target chamber from the start of cooling the second housing chamber 10, the second housing chamber 10 to 300 seconds, and the first housing chamber 9 to 450 seconds for each cooling time. Thus, the temperatures of the first housing chamber 9 and the second housing chamber 10 approach the set temperature, i.e., -18 ℃. The rotation speed of the microcomputer 81 was set to 2,000rpm for both the cooling of the first housing chamber 9 and the cooling of the second housing chamber 10.

Fig. 57 is a graph showing time-varying changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the operation is performed with a transition from the simultaneous operation mode to the alternate operation mode while the set temperature of the first storage chamber 9 is set to-18 ℃ and the set temperature of the second storage chamber 10 is set to-5 ℃ in the double-chamber mode. At 0 minutes, the temperatures of the first housing chamber 9 and the second housing chamber 10 were 25 ℃. The microcomputer 81 is in the simultaneous operation mode for a period of from 0 minutes to twenty minutes, and sets the rotation speed of the compressor 41 to 3,000rpm, and cools the first housing chamber 9 and the second housing chamber 10. The microcomputer 81 shifts to the alternate operation mode because the temperature of the second housing chamber 10 as the small chamber becomes lower than the set temperature (-5 ℃) within twenty minutes. In the alternate operation mode, the microcomputer 81 first cools only the first storage chamber 9, and when the temperature of the second storage chamber 10 exceeds the set temperature +2deg.C, it switches to cooling only the second storage chamber 10, and when the temperature of the second storage chamber 10 becomes lower than the set temperature, it switches to cooling only the first storage chamber 9. The microcomputer 81 stops the cooling of the first storage chamber 9 when the temperature of the first storage chamber 9 reaches the set temperature during the cooling of only the first storage chamber 9, and does not cool the second storage chamber 10 (stops the compressor 41) if the temperature of the second storage chamber 10 does not exceed the set temperature +2 ℃, and cools only the second storage chamber 10 if the temperature of the second storage chamber 10 exceeds the set temperature +2 ℃. The rotation speed of the microcomputer 81 was set to 2,500rpm for the first housing chamber 9 and 2,000rpm for the second housing chamber 10.

By executing the alternate operation mode as described above, even if there is a difference in length due to a difference in diameter dimension of the first refrigerant pipe 45 and the second refrigerant pipe 46 or a difference in winding form of the first refrigerant pipe 45 and the second refrigerant pipe 46, a dimension error of a capillary (capillary) of two systems connected to the first refrigerant pipe 45 and the second refrigerant pipe 46, or the like, the temperatures of the first housing chamber 9 and the second housing chamber 10 can be reliably brought to the set temperatures, and the temperatures of the first housing chamber 9 and the second housing chamber 10 can be accurately controlled.

Fig. 58 is a graph showing time-series changes in the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotational speed of the compressor 41 when the temperature of the second storage chamber 10 is controlled to be at 60 ℃ and the temperature of the first storage chamber 9 and the second storage chamber 10 is controlled to be at 30 ℃ in the double-chamber mode and the cooling of the second storage chamber 10 by the compressor 41 is stopped according to the temperature of the second storage chamber 10.

Fig. 59 is a graph showing time variations between the temperatures of the first storage chamber 9 and the second storage chamber 10 and the rotational speed of the compressor 41 when the temperature of the first storage chamber 9 is set to 60 ℃, the temperature of the second storage chamber 10 is set to 30 ℃ and the cooling of the second storage chamber 10 by the compressor 41 is controlled to stop in accordance with the time from the start of cooling in the double-chamber mode.

In fig. 58 and 59, the microcomputer 81 performs control to maintain the temperature of the second housing chamber 10 at 30 ℃ by cooling the second housing chamber 10 when the temperature of the second housing chamber 10 also exceeds the set temperature, i.e., 30 ℃ and approaches 60 ℃ under the influence of the first housing chamber 9 being 60 ℃.

In the case of fig. 58, when the temperature of the second storage chamber 10 exceeds 32 ℃ (30 ℃ +2 ℃), cooling of only the second storage chamber 10 is started, and when the temperature of the second storage chamber 10 reaches 28 ℃ (30 ℃ -2 ℃) 3 in cooling of only the second storage chamber 10, cooling of the second storage chamber 10 is stopped (the compressor 41 is stopped), but as described above, even if cooling of the second storage chamber 10 is stopped, the temperature of the second storage chamber 10 continues to decrease for about several minutes, and therefore, the temperature of the second storage chamber 10 decreases with respect to the set temperature, and the second heating portion 52 is driven. Therefore, the second housing chamber 10 is repeatedly cooled and heated, which is not preferable in terms of power consumption.

In the case of fig. 59, when the temperature of the second housing chamber 10 exceeds 32 ℃ (30 ℃ +2 ℃), cooling of only the second housing chamber 10 is started and continued for one minute (predetermined time) and then stopped. By limiting the cooling time of only the second storage chamber 10, supercooling of the second storage chamber 10 with respect to the set temperature can be suppressed, and driving of the second heating portion 52 can be reduced to reduce power consumption.

Fig. 60 is a flowchart of an operation of the dual chamber mode in which time control is added to the dual chamber mode in fig. 45. Time control means: when the number of the cooling target chambers is one and the set temperature of the chambers exceeds the predetermined temperature, the compressor 41 is intermittently operated. The following description will be focused on the processing added to fig. 45. In FIG. 60, 20℃is an example of the normal temperature. Instead of 20 ℃, the outside air temperature may be set.

When the current temperature of the first housing chamber 9 is higher than the set temperature +2deg.C (yes in S53) and the current temperature of the second housing chamber 10 is not higher than the set temperature +2deg.C (no in S54), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,500rpm (S542), sets the first adjustment valve 47a to open (on), sets the second adjustment valve 47b to close (off) (S543), drives the compressor 41 for a predetermined time (S544), stops the compressor 41 for a predetermined time (S545), and returns to S51. If the set temperature of the first storage chamber 9 is 20 ℃ or lower in S541 (no in S541), the microcomputer 81 proceeds to S58 in fig. 45.

When the current temperature of the first housing chamber 9 is lower than the set temperature-2 ℃ (yes in S61) and the current temperature of the second housing chamber 10 is higher than the set temperature +2deg.C (yes in S62), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000rpm (S622), closes (blocks) the first adjustment valve 47a, opens (opens) the second adjustment valve 47b (S623), drives the compressor 41 for a predetermined time (S624), drives the first heating unit 51 and stops the second heating unit 52 (S625), stops the compressor 41 for a predetermined time (S626), and returns to S51. When the set temperature of the second storage chamber 10 is 20 ℃ or lower in S621 (no in S621), the microcomputer 81 proceeds to S63 in fig. 45.

When the current temperature of the first housing chamber 9 is not higher than the set temperature +2℃andnot lower than the set temperature-2 ℃ (no in S53, no in S61) and the current temperature of the second housing chamber 10 is higher than the set temperature +2℃ (yes in S70), the microcomputer 81 sets the rotation speed of the compressor 41 to 2,000rpm (S702), sets the first adjustment valve 47a to be closed (blocked), sets the second adjustment valve 47b to be open (on) (S703), drives the compressor 41 for a predetermined time (S704), stops the compressor 41 for a predetermined time (S705), and returns to S51 when the set temperature of the second housing chamber 10 is higher than 20 ℃ (yes in S701). When the set temperature of the second housing chamber 10 is 20 ℃ or lower in S701 (no in S701), the microcomputer 81 proceeds to S71 in fig. 45.

Fig. 61 (a) is a waveform diagram of the driving current of the compressor 41 before and after the restart operation when the control of stopping the operation of the compressor 41 for one minute and restarting the operation is performed. Fig. 61 (B) is a waveform diagram of the driving current of the compressor 41 before and after the restart operation when the control of stopping the operation of the compressor 41 for two minutes and restarting the operation is performed. As shown in fig. 61 (a), when the stop time of the compressor 41 is one minute, the start current of the compressor 41 at the time of restarting the operation is as large as 12.2A. In contrast, as shown in fig. 61 (B), when the stop time of the compressor 41 is two minutes, the start current of the compressor 41 at the time of restarting the operation is relatively suppressed to 5.2A. Therefore, it is preferable that the specified time for stopping the compressor 41 in S545, S626, and S705 in fig. 60 is two minutes or more.

Fig. 62 is a graph showing time-varying changes in the temperatures of the first and second storage chambers 9 and 10 and the rotational speed of the compressor 41 when the set temperature of the first storage chamber 9 is set to 60 ℃ and the set temperature of the second storage chamber 10 is set to 30 ℃ and the cooling of the second storage chamber 10 by the compressor 41 is repeatedly operated for one minute and stopped for two minutes in the double-chamber mode. At 0 minutes, the temperatures of the first housing chamber 9 and the second housing chamber 10 were 60 ℃. From this point on, the microcomputer 81 controls the temperature of the second storage chamber 10 to be lowered to 30 ℃ by cooling the second storage chamber 10 when the temperature of the second storage chamber 10 is less likely to be lowered under the influence of the first storage chamber 9 being 60 ℃. At this time, by repeating the operation for one minute and the stop for two minutes, the temperature of the second housing chamber 10 can be reduced smoothly while suppressing the start-up current of the compressor 41, and the supercooling of the second housing chamber 10 with respect to the set temperature can be suppressed, thereby reducing the driving of the second heating portion 52 and reducing the power consumption. When the temperature of the second storage chamber 10 reaches the set temperature, as in fig. 59, when the temperature of the second storage chamber 10 exceeds 32 ℃ (30 ℃ +2 ℃), control is repeatedly performed to start cooling of only the second storage chamber 10 and to continue for one minute and then stop.

As shown in fig. 63 to 66, the electric machine 1 can mount and dismount the storage unit (attachment unit) 200 on the right side surface. The main frame 11 has a groove 36 as a first engaged portion at the right side. The right outer case 13 has a pair of protruding portions (protruding portions) 37 as second engaged portions at both front and rear end portions of a lower portion of the right side surface. The groove 36 and the projection 37 are disposed at positions spaced apart from each other to constitute a locking portion for locking the storage unit 200.

As shown in fig. 68 to 70, the storage unit 200 includes a pocket 201, a belt 221, a hook portion 222 serving as a first engagement portion, a pair of fastening tapes 224, a pair of loop portions 226 serving as a second engagement portion, and four buttons 230. The band 221 is formed by sewing three nylon bands (nylon strips) in an H-shape, for example. The hook 222 is made of, for example, resin, and is provided so that a pair of upper ends of the belt 221 are bridged to each other. Specifically, the upper end portion of the belt 221 is passed through the through hole of the hook 222 and folded back to be stapled. The fastening tapes 224 are respectively provided (sewn) to the left and right portions of the belt 221. The ring portions 226 are, for example, elastic rings (rubber rings) provided at a pair of lower ends of the belt 221. Specifically, the lower end portion of the belt 221 is passed through the loop 226 and folded back to be stapled. Four buttons 230 are provided on the belt 221 at the upper and lower portions of the pair of fastening tapes 224.

As shown in fig. 70, the pocket 201 includes a housing portion 202, a handle portion 203, fastening tapes 204 to 206, cloth portions 208 and 209, and four buttons 210. The housing portion 202 is made of, for example, cloth and has a snap-type opening and closing mechanism, and as shown in fig. 67 (a), has a size capable of housing the partition plate 70. The housing 201 may be replaced with a larger housing 201A as shown in fig. 67 (D). As shown in fig. 70, the handle 203 for conveyance is made of the same material as the belt 221, for example, and is provided on the upper surface of the housing 202. A pair of fastening tapes 204 are provided (stapled) to the back surface of the housing 202. Four buttons 210 are provided on the back surface of the housing 202, and are located at the upper and lower portions of the pair of fastening tapes 204. The fastening tape 205 and the cloth 208 are provided (stapled) to the back surface of the housing 202. The cloth 208 is connected to the lower side of the fastening tape 205. The cloth 209 is connected to the lower side of the cloth 208. The fastening tape 206 is connected to the lower side of the cloth 209.

When the pocket 201 is attached to the belt 221, the pair of fastening tapes 204 of the pocket 201 and the pair of fastening tapes 224 provided on the belt 221 are brought into surface contact with each other to be detachably coupled (bonded) to each other. The four buttons 210 of the pocket 201 and the four buttons 230 provided on the belt 221 are detachably coupled to each other. The portion of the belt 221 extending in the lateral direction is folded back at the boundary line between the cloth portions 208 and 209 so as to be sandwiched between the cloth portions 208 and 209, and the fastening tapes 205 and 206 are detachably coupled (bonded) to each other by being brought into surface contact with each other.

When the housing unit 200 is mounted to the electric machine 1, as shown in fig. 4, in a state in which the second cover 7 is opened, as shown in fig. 63, the hook portion 222 is engaged (snapped) with the groove portion 36, and the ring portion 226 is engaged (snapped) with the protrusion 37. The distance between the groove 36 and the protrusion 37, the vertical length of the belt 221, and the diameter of the ring 226 are in dimensional relationship such that the ring 226 is engaged with the protrusion 37 in a state stretched over the natural length. Therefore, when the housing unit 200 is mounted to the electric machine 1, tension (tension) applied to the belt 221 in the up-down direction by the elastic force of the ring portion 226 is provided. Thus, the rattling of the pocket 201 is suppressed, and the pocket 201 is stably held.

In the engaged state of the groove 36 and the hook 222, the second cover 7 in the closed state serves as an anti-release portion of the hook 222. This is because, as shown in fig. 66 a, the distance L1 from the upper end of the hook 222 in the engaged state of the groove 36 and the hook 222 to the portion of the second cover 7 facing the upper end is smaller than the thickness (vertical length) L2 of the hook 222 (L1 < L2). The second cover 7 serves as a drop-preventing portion of the hook 222, so that the storage unit 200 can be prevented from being separated from the electric machine 1 due to vibration or the like.

Since the electric machine 1 is detachable from the storage unit 200, a storage function different from the heat-insulating or cold-insulating space (the first storage chamber 9 and the second storage chamber 10) can be added, and convenience is high. By attaching the storage unit 200, the electric machine 1 can store the accessory such as the battery pack or the bottle opener, which is replaced, in the pocket 201, thereby facilitating the carrying of the accessory that does not require heating or cooling. Further, the detachable partition plate 70 can be accommodated in the pocket 201, and the handling and placement of the detachable partition plate 70 are facilitated.

As shown in fig. 71, the electric machine 1 can be attached to and detached from the attachment bags 231 to 233 and the S-hook 237 in addition to the storage unit 200. The second cover 7 has a locking portion (groove portion) 91 that can lock (latch) the accessory bag 231, a locking portion 102 (groove portion) that can lock (latch) the accessory bag 233, and locking portions (through holes) 93, 94 that can lock (latch) the S-hook 237. The first cover 6 has engaging portions (groove portions) 92 that can engage (lock) the accessory bag 232 and engaging portions (through holes) 95, 96 that can engage (lock) the S-hook 237. The accessory bags 231 to 233 are convenient as temporary storage bags. The S-hook 237 facilitates snap attachment. The attachment bag 231 can be engaged with the groove 36 shown in fig. 72, but in this case, the storage unit 200 cannot be mounted.

As shown in fig. 73 and 74, the electric machine 1 is configured such that a storage unit (attachment portion) 250 is detachable from the movable handle 20. The movable handle 20 has a grip portion 20a and a bridge portion 20b. The storage unit 250 has a pocket 251 and two strips 253. One end of each of the tapes 253 is sewn to the pocket 251, extends between the rear surface of the pocket 251 so as to surround the bridge portion 20b, and is detachably coupled (bonded) to the other end side of the fastening tape 254 provided (sewn) to the rear surface of the pocket 251 by being in surface contact with a fastening tape (not shown). Instead of or in addition to the bonding of the fastening tapes, the buttons may be bonded to each other. Between the pocket 251 and the grip portion 20a, a finger insertion space 20c is secured, and the use of the movable handle 20 is not hindered. The storage unit 250 also has the same operational effects (addition of the storage function) as the storage unit 200. The electric machine 1 may be provided with both the housing units 200 and 250.

Fig. 75 to 81 relate to an electric machine 1A according to another embodiment of the present invention. The electric machine 1A is different from the electric machine 1 in that the storage units 300, 400, 500 as the additional parts can be further attached and detached, and other aspects are identical. Hereinafter, the difference will be described mainly.

As shown in fig. 75 and 76, the electric machine 1 can mount and dismount the storage unit (attachment portion) 300 on the front surface (front surface). The main frame 11 has a pair of groove portions 38 as first engaged portions at both left and right end portions of the front edge portion. The left outer case 12 has a pair of protruding portions (protruding portions) 39 as second engaged portions at both left and right end portions of the lower portion of the front surface. The groove 38 and the projection 39 are disposed at positions spaced apart from each other to constitute a locking portion for locking the storage unit 300.

The storage unit 300 includes a pocket 301, a band 321, a pair of hooks 322 serving as a first engaging portion, a pair of fastening tapes 324, a pair of loops 326 serving as a second engaging portion, and four buttons 330. The band 321 is formed by sewing three nylon bands (nylon strips) in an H-shaped manner, for example. The pair of hooks 322 are made of, for example, resin, and are provided at a pair of upper ends of the belt 321. Specifically, the upper end portion of the band 321 is passed through the through hole of the hook 322 and folded back to be stapled. The fastening tapes 324 are respectively provided (sewn) to the left and right portions of the tape 321. The ring portions 326 are, for example, elastic rings (rubber rings) provided at a pair of lower ends of the belt 321. Specifically, the lower end portion of the belt 321 is passed through the loop 326 and folded back to be stapled. Four buttons 330 are provided on the belt 321 at the upper and lower portions of the pair of fastening tapes 324.

The pouch 301 has the same structure as the pouch 201 except that no handle portion is provided. Further, the pocket 301 may also have a handle portion. The attachment of the pocket 301 to the strap 321 may be performed in the same manner as the attachment of the pocket 201 to the strap 221.

When the housing unit 300 is mounted to the electric machine 1A, as shown in fig. 2, in a state in which the first cover 6 is opened, the hook portion 322 is engaged (locked) with the groove portion 38, and the ring portion 326 is engaged (locked) with the convex portion 39, as shown in fig. 76. The distance separating the groove 38 and the protrusion 39 from each other, the vertical length of the belt 321, and the diameter of the ring 326 are in dimensional relationship such that the ring 326 is engaged with the protrusion 39 in a state stretched over the natural length. Therefore, when the housing unit 300 is mounted to the electric machine 1A, tension (tension) applied to the belt 321 in the up-down direction by the elastic force of the ring 326 is provided. Thus, the rattling of the pocket 301 is suppressed, and the pocket 301 is stably held.

In the engaged state of the groove 38 and the hook 322, the first lid 6 in the closed state serves as a release preventing portion of the hook 322. This is because the second cover 7 in the closed state becomes the anti-slip portion of the hook portion 222 in the engaged state of the groove portion 36 and the hook portion 222 as described above. The first cover 6 serves as a drop-preventing portion of the hook 322, so that the storage unit 300 can be prevented from being separated from the electric machine 1A due to vibration or the like.

Since the electric machine 1 is detachable from the storage unit 300, a storage function different from the heat-insulating or cold-insulating space (the first storage chamber 9 and the second storage chamber 10) can be added, and convenience is high. By attaching the storage unit 300, the electric machine 1A can store an accessory such as a battery pack or a bottle opener, which is replaced, in the pocket 301, thereby facilitating the carrying of the accessory that does not require heating or cooling. Further, the detachable partition plate 70 can be accommodated in the pocket 301, and the handling and placement of the detachable partition plate 70 are facilitated.

As shown in fig. 77 and 78, the electric machine 1A is capable of attaching and detaching the housing unit 200 to the right side, attaching and detaching the housing unit 300 to the front surface, and attaching and detaching the housing unit 400 to the rear surface (back surface). The mounting of the receiving units 200, 300 is as described above. The housing unit 400 has the same structure as the housing unit 300, and can be mounted on the rear surface of the electric machine 1A in the same manner as the mounting method of the housing unit 300 on the front surface of the electric machine 1A. The main frame 11 also has a pair of groove portions 38 as first engaged portions at the rear side portion. The groove 38 engages with a hook (first engaging portion) 422 of the storage unit 400. The left outer case 12 also has a pair of protruding portions (protruding portions) 39 as second engaged portions at both left and right end portions of the lower portion of the rear surface. The protruding portion 39 is engaged with a ring portion (second engaging portion) 426 of the storage unit 400.

The belt 221 of the storage unit 200 and the belt 321 of the storage unit 300 are connected to each other by the connection portion 240. The belt 221 of the storage unit 200 and the belt 421 of the storage unit 400 are connected to each other by a connecting portion 241. That is, the storage units 200, 300, 400 are connected to each other by the connecting portions 240, 241. The connecting portions 240 and 241 may be omitted, and the storage units 200, 300, and 400 may be independent of each other.

As shown in fig. 79 to 81, the electric machine 1A can mount and dismount the storage unit 500 on the upper surface. The first cover 6 has a pair of downward facing groove portions 97 as first engaged portions at both left and right end portions of the front side portion, and a downward facing groove portion 98 as a second engaged portion at a center portion of the rear side portion. The groove portions 97 and 98 are disposed at positions spaced apart from each other, and constitute locking portions for locking the storage unit 500.

The storage unit 500 includes a pocket 501, a tape 521, a hook 522, a fastening tape 524, and buttons 530. The hooks 522 are provided at the front end portions of the bands 521 and the rear end portions of the bands 521, respectively. The front hook 522 is engaged with the groove 97. The rear hook 522 is engaged with the groove 98. The fastening tape 524 and the button 530 are used for attaching the pocket 501, and are provided on the tape 521. The pocket 501 has a fastener and a button, not shown, on the back surface thereof, corresponding to the fastener 524 and the button 530. The storage unit 500 also has the same operational effects (addition of the storage function) as the storage unit 200.

The second cover 7 has a downward facing groove 99 as a first engaged portion at a front side portion, and a pair of downward facing grooves 100 as second engaged portions at left and right end portions of a rear side portion. Although not shown, the electric machine 1A can mount and dismount the storage unit following the structure of the storage unit 500 by using the grooves 99 and 100.

Fig. 82 is a perspective view of an electric machine 1B according to still another embodiment of the present invention. Hereinafter, the difference from the electric machine 1 will be mainly described. The electric machine 1B has grooves 101 as first engaged portions at both left and right ends of a front edge portion of the first cover 6. The left outer case 12 has a pair of protruding portions (protruding portions) 39 as second engaged portions at both left and right end portions of the lower portion of the front surface.

The tape 621 is formed by sewing three nylon tapes (nylon tapes) in an H-shape, for example. The pair of hooks 622 are made of, for example, resin, and are provided at a pair of upper ends of the belt 621. Specifically, the upper end portion of the tape 621 is passed through the through hole of the hook 622 and folded back to be stapled. The fastening tapes 624 are respectively provided (sewn) on the left and right portions of the tape 621. The ring portions 626 are, for example, elastic rings (rubber rings) provided at a pair of lower ends of the belt 621, respectively. Specifically, the lower end portion of the belt 621 is passed through the ring portion 626 and folded back to be stapled. Four buttons 630 are provided on the belt 621, at the upper and lower portions of the pair of fastening tapes 624. A pocket not shown in the figure having the same structure as the pocket 301 of fig. 75 can be attached to the belt 621, so that a storage unit can be constituted.

When this housing unit is mounted to the electric machine 1B, the hook 622 is engaged (snapped) with the groove 101 and the ring 626 is engaged (snapped) with the protrusion 39 in a state where the first cover 6 is closed. The distance between the grooves 101 and the protrusions 39, the vertical length of the belt 621, and the diameter of the ring portion 626 are in dimensional relationship such that the ring portion 626 is engaged with the protrusions 39 in a state stretched over the natural length, and tension (tension) applied to the belt 621 in the vertical direction is given by the elastic force of the ring portion 626. This suppresses rattling of the pocket, not shown, attached to the belt 621, and the pocket is stably held. The tape 621 suppresses accidental opening of the first cover 6 due to tipping or vibration of the electric machine 1B.

Fig. 83 is a perspective view of the interior of the electric machine 1 in a state in which the housing chamber 8 is divided into three by the partition plates 70a and 70b (three-compartment mode) as viewed from the upper right. Here, a flow path of the refrigerant will be described. The structure and control other than the flow path of the refrigerant are basically as described above. The refrigerant flowing out of the compressor 41 flows into the regulator valve 703 through the condenser 42. The regulator valve 703 is connected to the first refrigerant pipe 45 as the first cooling unit, the second refrigerant pipe 46 as the second cooling unit, and the fifth refrigerant pipe 701 as the fifth cooling unit, and the refrigerant flowing into the regulator valve 703 flows out to at most three channels. That is, the refrigerant flowing into the regulator valve 703 in one flow path separately flows out to at most three flow paths (the first refrigerant pipe 45, the second refrigerant pipe 46, and the fifth refrigerant pipe 701). The regulator valve 703 has a third regulator valve that can control the flow of the first refrigerant pipe 45, a fourth regulator valve that can control the flow of the second refrigerant pipe 46, and a fifth regulator valve that can control the flow of the fifth refrigerant pipe 701. These adjustment valves can be switched between an open state and a closed state in response to a signal from the microcomputer 81, respectively, and by switching between the open state and the closed state, it is possible to control whether or not to flow the refrigerant to the respective refrigerant tubes. The specific control contents are as described above.

The first refrigerant pipe 45 is provided on at least the side surface of the first housing chamber 9 as described above, and cools the first housing chamber 9. The second refrigerant tube 46 is provided on at least the side surface of the second housing chamber 10 as described above, and cools the second housing chamber 10. The fifth refrigerant pipe 701 is provided on the side surface and the bottom surface of the third housing chamber 704, and cools the third housing chamber 704. The first refrigerant pipe 45, the second refrigerant pipe 46, and the fifth refrigerant pipe 701 are independent of each other. That is, the first refrigerant pipe 45 is provided to cool mainly the first housing chamber 9, the second refrigerant pipe 46 is provided to cool mainly the second housing chamber 10, and the fifth refrigerant pipe 701 is provided to cool mainly the third housing chamber 704.

The first refrigerant pipe 45 and the second refrigerant pipe 46 extend similarly to fig. 13, and therefore a description thereof is omitted. The fifth refrigerant tube 701 extends along the rear side member 706 from an upper end portion toward a lower end portion of a rear surface of the rear side member 706. The fifth refrigerant tube 701 repeats six times a reciprocating operation for turning back the rear side surface of the rear side surface member 706 back and forth, and extends toward the front side surface member 705 while turning back the bottom surface side member, not shown, back and forth. The fifth refrigerant tube 701 reaching the front side member 705 extends the front side member 705 from the lower end portion toward the upper end portion while turning back left and right. A fifth refrigerant pipe 701 having a front side member 705 extending from a lower end portion to an upper end portion is connected to the adjustment valve 702. The regulator valve 702 is connected so that the first refrigerant pipe 45, the second refrigerant pipe 46, and the fifth refrigerant pipe 703 merge together. The refrigerant converged by the adjustment valve 702 is discharged from one refrigerant pipe 44 and flows into the compressor 41. In this way, by arranging the three refrigerant tubes so as to extend independently to the three storage chambers, when the three-chamber mode is intended for use, the three refrigerant tubes can be controlled independently.

While the present invention has been described with reference to the embodiments, it will be understood by those skilled in the art that various modifications may be made to the constituent elements or processes of the embodiments within the scope of the claims. The following relates to modifications.

The first housing chamber 9 and the second housing chamber 10 may have the same size. The first refrigerant tube 45 and the second refrigerant tube 46 may be independent of the right side member 16 and the left side member 17. The setting unit 60 may be configured to determine the set temperature and start the operation without pressing the execution button 67 instead of determining the set temperature of the first storage chamber 9 and the second storage chamber 10 by pressing the execution button 67. For example, the following structure may be adopted: when three seconds (a predetermined time) have elapsed since the right chamber temperature setting button 62 or the left chamber temperature setting button 63 was last pressed, the set temperature is determined and the operation is started. At this time, the execution button 67 may be omitted.

The material of the band, pocket, hook, loop, etc. in the storage unit may be changed as appropriate. In the embodiment relating to the attachment and detachment of the storage unit, other cooling means such as a peltier element may be provided instead of the cooling means 40 using the compressor 41.

The number of connectable battery packs or rated output voltage of the battery packs, the voltage of the DC power supply 90, various times, various threshold values, and the like, which are exemplified as specific numerical values in the embodiment, are not limited to any particular values, and may be arbitrarily changed according to the required specifications.

Description of symbols

1. 1A, 1B: electric machine

2: body

3: a first body part

4: a second body part

5: cover body

6: first cover body

6a: handle portion

7: second cover body

7a: handle portion

8: accommodating chamber (accommodating part)

8a: bottom surface

9: first accommodation chamber (first accommodation part)

9a: first side surface

9b: second side surface

10: second accommodation chamber (second accommodation part)

10a: first side surface

10b: second side surface

11: main frame

11b: boss

11c, 11d: an opening part

12: left outer box

12a: boss

13: right outer case

15: bottom surface member

16: right side member

16a: outer curved part

17: left side member

17a: outer curved part

18: rail member

18a: cut-out part

18b: concave part

18c, 18d: groove part

19: caster wheel

20: movable handle (carrying handle)

20a: holding part

20b: bridge portion

20c: finger insertion space

21: handle portion

22: battery pack accommodating chamber

22a: battery pack mounting part

23: air inlet

24: exhaust port

25: first hinge mechanism

26: second hinge mechanism

27: USB terminal

28: power input terminal (vehicle power connection part)

29: battery pack

30: battery box

30a: boss

30b: drainage hole

31: battery terminal

32: branching portion

33: first air path

34: second air path

35: foot portion

36: groove (first engaged part)

37: convex portion (second engaged portion)

38: groove (first engaged part)

39: convex portion (second engaged portion)

40: cooling mechanism

41: compressor (cooler)

42: condenser

43: capillary (callory tube)

44: refrigerant tube

44a: branching portion

45: first refrigerant pipe (first cooling part)

45a: air storage tank

46: second refrigerant pipe (second cooling part)

46a: air storage tank

47: adjusting valve

47a: first regulating valve

47b: second regulating valve

48: compressor driving circuit

49: fan with fan body

50: heating mechanism

51: a first heating part

52: a second heating part

55: first thermistor (first temperature sensor)

56: second thermistor (second temperature sensor)

57: first support

58: second support

60: setting part

61: display unit

61a: battery state display unit

61b: external power supply connection display unit

61c: USB machine power-on display part

61d: error display unit

61e: right box room temperature display part

61f: left box room temperature display part

62: right box room temperature setting button

63: left box room temperature setting button

64: mode switch button (Chamber switch button)

65: power button

66: USB machine power-on switching button

67: execution button

70: partition plate

71: top partition plate

72: bottom partition plate

73: butt joint part

74: heat insulation material

79: storage article

80: control circuit board

81: microcomputer (operation control part)

82: microcomputer (charging control part)

83: control power supply

84: rotating speed setting circuit

85: shunt resistor

86a, 86b: battery voltage detection circuit

86c: DC power supply voltage detection circuit

87: adjusting valve

88: charging circuit

89: shunt resistor

90: DC power supply

91-96: fastening part

97-101: groove part

102: fastening part

147a: first regulating valve

147b: second regulating valve

170: partition plate

171: top partition plate

172: bottom partition plate

173: butt joint part

174: heat insulation material

175: hinge mechanism

200: storage unit (attachment)

201. 201A: pocket

202: storage part

203: handle portion

204-206: sticking buckle belt

208. 209: cloth part

210: button

221: belt with a belt body

222: hook (first clamping part)

224: sticking buckle belt

226: ring part (second clamping part)

230: button

231-233: accessory bag

237: s-shaped hook

240. 241: connecting part

250: storage unit (attachment)

251: pocket

253: belt with a belt body

254: sticking buckle belt

300: storage unit (attachment)

301: pocket

321: belt with a belt body

322: hook (first clamping part)

324: sticking buckle belt

326: ring part (second clamping part)

330: button

400: storage unit (attachment)

401: pocket

421: belt with a belt body

422: hook (first clamping part)

426: ring part (second clamping part)

500: storage unit (attachment)

501: pocket

521: belt with a belt body

522: hook part

524: sticking buckle belt

530: button

621: belt with a belt body

622: hook part

624: sticking buckle belt

630: button

Claims (15)

1. An electric machine, comprising:

a main body is provided with: a first accommodating chamber and a second accommodating chamber adjacent to each other and having a bottom surface and a side surface, respectively;

a cover body openable and closable with respect to the main body; and

a cooling mechanism includes: a first cooling part for cooling the first accommodating chamber and a second cooling part for cooling the second accommodating chamber,

wherein, the liquid crystal display device comprises a liquid crystal display device,

the first cooling part is arranged on at least one side surface of the first accommodating chamber,

The second cooling part is arranged on at least one side surface of the second accommodating chamber.

2. The electric machine of claim 1, wherein the motor is configured to control the motor to drive the motor,

the first housing chamber and the second housing chamber each have: a first side surface furthest from each other and a second side surface connected with the first side surface,

the first cooling part and the second cooling part are arranged on at least the first side surface.

3. The electric machine of claim 2, wherein the motor is configured to control the motor to drive the motor,

the first cooling part and the second cooling part are arranged on the second side surface.

4. The electric machine according to any one of claims 1 to 3, characterized by further comprising:

a control unit for controlling the first cooling unit and the second cooling unit,

the cooling mechanism has: a cooling machine that discharges a refrigerant, the first cooling portion and the second cooling portion through which the refrigerant discharged from the cooling machine passes, and an adjustment valve that can adjust the flow of the refrigerant in the first cooling portion and the second cooling portion,

the first cooling unit has: a first refrigerant pipe provided on at least the side surface of the first housing chamber,

The second cooling unit has: and a second refrigerant tube provided in at least the side surface of the second housing chamber.

5. The electric machine of claim 4, wherein the motor is configured to control the motor to drive the motor,

the first refrigerant tube and the second refrigerant tube are independent of each other,

the regulator valve has: a first regulating valve arranged on the first refrigerant pipe and a second regulating valve arranged on the second refrigerant pipe.

6. The electric machine according to any one of claims 1 to 5, characterized by further comprising:

a setting unit for setting the temperatures of the first and second chambers,

one of the first housing chamber and the second housing chamber may be frozen, and the other of the first housing chamber and the second housing chamber may be refrigerated.

7. The electric machine of claim 6, further comprising:

a heating mechanism capable of heating at least one of the first housing chamber and the second housing chamber,

the heating mechanism has: at least one of a first heating part arranged on the side surface of the first accommodating chamber, a second heating part arranged on the side surface of the second accommodating chamber, and a third heating part arranged on the side surfaces of the first accommodating chamber and the second accommodating chamber.

8. The electric machine of claim 7, wherein the motor is configured to control the motor to drive the motor,

one of the first housing chamber and the second housing chamber may be set to be frozen or refrigerated, and the other of the first housing chamber and the second housing chamber may be set to be heated.

9. The electric machine according to any one of claims 1 to 8, characterized by further comprising:

and a removable partition plate that partitions the first housing chamber and the second housing chamber.

10. The electric machine according to any one of claims 1 to 9, characterized by further comprising:

a control unit for controlling the cooling mechanism,

the control unit switches the driving state of the cooling mechanism according to the size of the housing chamber to be cooled.

11. The electric machine of claim 10, wherein the motor is configured to control the motor to drive the motor,

the control unit reduces the maximum driving strength of the cooling mechanism when cooling only one of the first housing chamber and the second housing chamber, compared to when cooling both the first housing chamber and the second housing chamber.

12. The electric machine of claim 11, wherein the motor is configured to control the motor to drive the motor,

The maximum driving strength when only the first housing chamber is cooled is a first strength,

the maximum driving strength when only the second housing chamber is cooled is a second strength,

the first and second chambers have the same volume and the first and second intensities are equal to each other, or the first chamber has a volume greater than the second chamber and the first intensity is greater than the second intensity.

13. The electric machine according to any one of claims 10 to 12, characterized in that,

the control unit stops cooling one of the first housing chamber and the second housing chamber and reduces the maximum driving strength of the cooling mechanism when the temperature of the one of the first housing chamber and the second housing chamber is equal to or lower than a set temperature.

14. The electric machine according to any one of claims 10 to 13, characterized in that,

when the size of the housing chamber to be cooled is changed to be large, the control unit changes the driving state after switching the flow path of the refrigerant.

15. The electric machine as set forth in any one of claims 10 to 14 wherein,

When the size of the housing chamber to be cooled is changed to be smaller, the control unit switches the flow path of the refrigerant after switching the driving state.