CN210740827U - Electrical device - Google Patents
Electrical device Download PDFInfo
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- CN210740827U CN210740827U CN201790001478.3U CN201790001478U CN210740827U CN 210740827 U CN210740827 U CN 210740827U CN 201790001478 U CN201790001478 U CN 201790001478U CN 210740827 U CN210740827 U CN 210740827U
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- fan
- thermoelectric element
- tank
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model provides an electric equipment that can reduce power consumption in the structure that has used thermoelectric element. The electrical device is provided with a Peltier element (30) capable of heating or cooling the interior of the case, and a microcomputer (60) that controls energization of the Peltier element (30). When the temperature in the box of the electrical equipment satisfies a predetermined condition, the microcomputer (60) reduces the power supply to the Peltier element (30) as compared with the case where the predetermined condition is not satisfied. The predetermined condition is a condition that an absolute value of a difference between the inside temperature and the outside temperature is a predetermined value or more.
Description
Technical Field
The present invention relates to an electric apparatus, for example, a heat or cold insulation box using a thermoelectric element.
Background
Patent document 1 listed below discloses a portable cooling box in which a thermoelectric element having a peltier effect is energized from an internal battery.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 9-138047
SUMMERY OF THE UTILITY MODEL
Problem to be solved by utility model
In a heat or cold insulation box which performs at least one of heat insulation and cold insulation by using a thermoelectric element such as a peltier element, there is a problem that the thermoelectric element cannot be used for a long time when driven by a battery because the power consumption of the thermoelectric element is large.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an electric device that can reduce power consumption in a configuration using a thermoelectric element.
Means for solving the problems
The utility model discloses a certain mode is an electrical equipment. The electrical device is characterized by comprising: a body having an intra-tank space therein; a lid body provided on an upper portion of the main body and openable and closable with respect to the main body; a rotation support part for supporting the cover body in an openable and closable manner; a thermoelectric element capable of heating or cooling the inside of the case; a first fan provided outside the case of the thermoelectric element; a second fan provided inside the case of the thermoelectric element; an in-tank temperature sensor for detecting the temperature in the tank; an outside-box temperature sensor for detecting the temperature outside the box; and a control unit for controlling the energization of the thermoelectric element based on whether the detected temperature in the case satisfies a predetermined condition or not, wherein a power supply box for detachably mounting a battery for driving the thermoelectric element is provided on a side surface of the main body.
The predetermined condition may be a condition that an absolute value of a difference between the detected temperature inside the tank and the detected temperature outside the tank is equal to or greater than a predetermined value, and the power supply to the thermoelectric element may be reduced by comparing a case where the predetermined condition is satisfied with a case where the predetermined condition is not satisfied.
The control unit may intermittently drive the second fan while reducing the power supply to the thermoelectric element.
A second fin for increasing a heat transfer area of the thermoelectric element may be further provided on a side of the second fan, the second fan may be a centrifugal fan, and the in-box temperature sensor may be provided on a side of the second fan and on an upstream side of the second fin in a flow path generated by the second fan.
The control unit may reduce power supply to the first fan by comparing a case where the temperature in the tank satisfies a predetermined condition with a case where the temperature in the tank does not satisfy the predetermined condition.
A first fin for increasing a heat transfer area of the thermoelectric element and an opening provided at a side of the first fin may be further provided between the first fan and the thermoelectric element, the first fan may be an axial flow fan, and the outside-box temperature sensor may be provided in a flow path formed by the axial flow fan, the first fin, and the opening.
The thermoelectric element, the first fan, and the second fan may be provided in the cover.
The thermoelectric element may be provided on the power supply box side of the lid body, and a recess facing the space in the case may be provided on the inside of the case of the lid body on the side opposite to the thermoelectric element.
The power supply case may have a battery insertion portion cover that openably and closably covers the battery.
The control unit may include a charging circuit configured to charge the battery with power supplied from the outside.
When the charging of the battery is completed, the power supply to the thermoelectric element may be restored.
The electric device may further include a dc voltage input connection unit for supplying a dc voltage from outside to the thermoelectric element via an adapter, and the battery may be charged in a state where the dc voltage is input from outside via the adapter.
The cover may have a housing portion that can house the adapter.
The battery may be used for an electric power tool.
In addition, any combination of the above-described constituent elements, and the change expressed in the method, system, and the like of the present invention are also effective as aspects of the present invention.
The utility model has the following effects.
According to the present invention, an electrical device can be provided that can reduce power consumption in a configuration using a thermoelectric element.
Drawings
Fig. 1 is a perspective view of a state in which a lid 20 of a hot and cold box 1 according to an embodiment of the present invention is closed.
Fig. 2 is a perspective view of the hot and cold box 1 in a state where the lid 20 is opened.
Fig. 3 is a plan view of the cold-warm box 1.
Fig. 4 is a top cross-sectional view of the cold-warm box 1, which is a cross-sectional view taken directly below the upper fan 32.
Fig. 5 is a front view of the cold-warm box 1.
Fig. 6 is a rear sectional view (sectional view a-a of fig. 3) of the cold-warm box 1.
Fig. 7 is a right side view of the cold-warm box 1.
Fig. 8 is a right sectional view of the incubator 1 (sectional view J-J of fig. 3).
Fig. 9 is a cross-sectional view D-D of fig. 5.
Fig. 10 is a cross-sectional view E-E of fig. 5.
Fig. 11 is a bottom cross-sectional view of the cold-warm box 1 taken along a cross-section directly below the lower fan cover 35.
Fig. 12 is a sectional view F-F of fig. 3.
Fig. 13 is an enlarged sectional view of the vicinity of the lower fan 34 in fig. 6.
Fig. 14 is a sectional view H-H of fig. 13.
Fig. 15 is an enlarged view of the operation panel 51.
Fig. 16 is a control block diagram of the cold-warm box 1.
Fig. 17 is a control flowchart of the cold-warm box 1.
Fig. 18 is a timing chart showing an example of the operation of the cold-warm box 1.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same or equivalent constituent elements, components, processes, and the like shown in the respective drawings are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted. The embodiments are merely examples and do not limit the present invention, and all the features and combinations described in the embodiments are not necessarily limited to the essential structure of the present invention.
An example of the electric device will be described with reference to a heat-insulating or cold-insulating box.
Next, the structure of the hot and cold box 1 according to the embodiment of the present invention will be described with reference to fig. 1 to 15. The directions of up and down, front and back, and left and right are defined based on fig. 1. In fig. 10, the upper fin 31 is not shown. The cold-warm box 1 includes a main body 10 having an internal space 10a, a lid 20 provided to be openable and closable with respect to the main body 10, and a power supply box 50 provided on a side surface of the main body 10. The main body 10, the lid body 20, and the power supply box 50 are all made of a material having low thermal conductivity, such as resin.
The main body 10 has four side surface portions 11 and a bottom surface portion 12 (fig. 5 and the like). The side surface portion 11 rises from each side of the substantially rectangular bottom surface portion 12 to form a substantially rectangular parallelepiped box space 10 a. As shown in fig. 6 and 8, the side surface part 11 and the bottom surface part 12 are hollow walls, and the inside is filled with polyurethane foam 19 as a heat insulating material. A rotation support portion 14 that rotatably (openably and closably) supports the lid body 20 is provided at an upper portion of the rear side surface of the main body 10. A pair of lock mechanisms 13 for locking the lid body 20 in a closed state are provided at an upper portion of a front side surface of the main body 10, and a recess 15 into which a hand can be inserted when the lid body 20 is opened is provided at a position between the pair of lock mechanisms 13. In order to lock the cover 20 in the open state, a coupling member 18 is provided between the body 10 and the cover 20. As shown in fig. 7, shoulder straps 16 for carrying are provided so as to straddle the upper centers of the left and right side surfaces of the main body 10. In the drawings other than fig. 7, the shoulder straps 16 are not shown. As shown in fig. 6, the main body 10 is provided at upper portions of both left and right side surfaces thereof with carrying handle portions 17.
The lid 20 opens and closes the upper opening of the main body 10, and is rotatably supported by the main body 10 by the rotation support portion 14 of the main body 10. The lid 20 can be locked in an open state with respect to the body 10 by the coupling member 18. The lid body 20 has an upper surface portion 21, four side surface portions 22, and a lower surface portion 23. The side surface portion 22 is provided so as to straddle each side of the substantially rectangular upper surface portion 21 and lower surface portion 23. An openable and closable housing cover 24a is provided at the upper right portion of the lid body 20, and a housing 24 (fig. 4) is provided below the housing cover 24 a. The housing cover 24 can house a cable or the like for connecting an external power supply. As shown in fig. 6 and 8, the lid body 20 is hollow, and the inside thereof is filled with foamed polyurethane 29 as a heat insulating material. The upper, lower, front, rear, and left and right sides of the interior space 10a are surrounded by the foamed urethane 19 provided in the main body 10 and the foamed urethane 29 provided in the lid body 20.
As shown in fig. 6 and 8, the lid 20 is provided with a peltier element 30 as a thermoelectric element, an upper fin 31 as a first fin, an upper fan 32 as a first fan, a lower fin 33 as a second fin, and a lower fan 34 as a second fan, which are capable of heating or cooling the inside of the tank (the tank space 10 a). The peltier element 30, the upper fin 31, the upper fan 32, the lower fin 33, and the lower fan 34 are provided at positions displaced rightward from the center of the lid body 20 (positions closer to the power supply box 50 than the center of the lid body 20 in a state where the lid body 20 is closed). As shown in fig. 10 and 11, the lower surface portion 23 of the lid body 20 has a recess 23a facing the interior space 10a on the side opposite to the peltier element 30 and the upper fan 32 across the center thereof. The concave portion 23a is provided for the purpose of increasing the capacity of the hot and cold box 1.
An upper intake port 25 as a first intake port is provided in the upper surface portion 21 of the lid 20 at a position directly above the upper fan 32. An upper air outlet 26 as a second air outlet is provided in the lid 20 at a position that extends over the upper surface portion 21 and the front and rear side surface portions 22 and that is lateral to the upper fins 31 and the upper fan 32. A lower fan cover 35 is provided on the lower surface of the lid body 20 so as to cover the lower fins 33 and the lower fan 34. As shown in fig. 10, a lower intake port 36 as a second intake port is provided on the lower surface of the lower fan cover 35 at a position directly below the lower fan 34. As shown in fig. 10 and 11, a lower air outlet 37 as a second air outlet is provided at a position across the lower surface and the rear side surface of the lower fan cover 35.
The upper fin 31 is made of metal such as aluminum having high thermal conductivity, and is provided on the upper surface (the surface on the opposite side to the case inside) of the peltier element 30 in order to enlarge the heat transfer area. The upper fan 32 is an axial fan (axial fan) and is provided above the upper fin 31. The upper fan 32 blows the outside air introduced from the upper air inlet 25 to the upper fins 31 to promote heat radiation or heat absorption of the upper fins 31. The airflow blown to the upper fins 31 by the upper fan 32 is discharged to the outside of the lid body 20 through the upper air outlet 26.
The lower fin 33 is made of metal such as aluminum having high thermal conductivity, and is provided on the lower surface (surface inside the case) of the peltier element 30 in order to enlarge the heat transfer area. The lower fan 34 is a blower (centrifugal fan) and is provided on a side (front in this case) of the lower fin 33. The lower fan 34 blows the air in the box introduced from the lower air inlet 36 to the lower fins 33 and returns the air in the box from the lower air outlet 37, thereby circulating the air in the box and promoting heating or cooling of the box.
The power supply box 50 is separate from the main body 10 and is attached to the right side surface of the main body 10 (for example, by slide-fitting from below, fixing by screwing, or the like). An operation panel 51, a DC input section cover 52, and a battery insertion section cover 53 are provided on the right side surface of the power supply box 50. As described below, the operation panel 51 includes various switches and a status display unit for the user to operate the cold-warm box 1. The DC input section cover 52 is a cover that openably covers a power cable insertion opening (DC input section) not shown. The battery insertion portion cover 53 is a cover that openably covers the battery pack 54 shown in fig. 6 and 12. A watertight sealing material 57 made of an elastic material such as rubber is sealed between the power supply case 50 and the battery insertion portion cover 53 over the entire circumference in a watertight manner.
As shown in fig. 15, the operation panel 51 is provided with a power button (power switch) 51a, a mode switching button (mode switching switch) 51b, a cold-keeping mode display lamp 51c, a warm-keeping mode display lamp 51d, a power switching button (power switching switch) 51e, a high-power mode display lamp 51f, an energy-saving mode display lamp 51g, and a charging display lamp 51 h. The power button 51a is a switch for switching between driving and stopping of the cold-warm box 1 by the user. The mode switching button 51b is a switch for the user to switch the operation mode of the cold-warm box 1 between the cold-keeping mode and the warm-keeping mode. The cooling mode indicator lamp 51c is a display unit that is turned on when the cooling mode is selected. The warm keeping mode indicator lamp 51d is a display unit that is turned on when the warm keeping mode is selected. The power switch button 51e is a switch for the user to switch the mode of the operation intensity of the cold-warm box 1 between the high-power mode and the energy-saving mode. The high power mode indicator lamp 51f is an indicator unit that is turned on when the high power mode is selected. The energy saving mode display lamp 51g is a display unit that is turned on when the energy saving mode is selected. The charging display lamp 51h is a display portion that lights up when the battery pack 54 mounted in the power supply box 50 is charged by an external power supply. The cold keeping mode indicator lamp 51c, the warm keeping mode indicator lamp 51d, the high power mode indicator lamp 51f, the energy saving mode indicator lamp 51g, and the charging indicator lamp 51h are controlled to be turned on by the microcomputer 60 shown in fig. 16. In fig. 16, the buttons, the lamps, and the connecting lines between these components and the microcomputer 60 are not shown.
As shown in fig. 6 and 12, a battery pack 54 and a circuit board 55 are provided in the power supply box 50. The battery pack 54 is preferably a battery pack for driving an electric power tool, and is detachably provided to a terminal portion in the power supply box 50. The circuit board 55 is disposed above the battery pack 54 in the power supply box 50. The wiring 56 is a cable for various electrical connections. As shown in fig. 6, a part of the wiring 56 enters the side surface 11 (right side surface) of the main body 10 from the inside of the power supply box 50, passes through the inside of the foamed urethane 19, passes through the vicinity of the opening/closing axis of the rotation support 14 from the inside of the side surface 11 (rear side surface) as shown in fig. 8, and then extends from the main body 10 into the lid body 20 to be connected to the peltier element 30, the upper fan 32, and the lower fan 34, respectively.
The electrical configuration and control of the cold-warm box 1 will be described with reference to fig. 16 to 18. As shown in fig. 16, the output voltage of the battery pack 54 is stepped down by the regulator 64 to an operating voltage (for example, DC5V) of the microcomputer 60 as a control unit, and is supplied to the microcomputer 60 as a power source. The output voltage of the battery pack 54 is supplied to the DC/DC converter 65 via a switching element Q5 such as an FET or an IGBT. The switching element Q5 is controlled by the microcomputer 60 and is turned off at the time of charging of the battery pack 54.
The DC/DC converter 65 converts the output voltage of the battery pack 54 into the driving voltages of the peltier element 30, the upper fan 32, and the lower fan 34 under the control of the microcomputer 60. The peltier element 30, the upper fan 32, and the lower fan 34 are provided in parallel between output terminals of the DC/DC converter 65. Switching element Q2 such as an FET and an IGBT is used for drive control of upper fan 32, and is provided in series with upper fan 32. A switching element Q3 such as an FET or an IGBT is used for drive control of the lower fan 34, and is provided in series with the lower fan 34. A switching element Q4 such as an FET or an IGBT is used for drive control of the peltier element 30, and is provided in series with the peltier element 30. The switching mechanism 66 is a relay or the like, and is provided to switch the direction of the drive current flowing to the peltier element 30, that is, to switch whether the peltier element 30 heats or cools the interior space 10 a. In fig. 16, the gates as the control terminals of the switching elements Q2 to Q5, the DC/DC converter 65, and the connection lines between the switching mechanism 66 and the microcomputer 60 are not shown.
The in-box temperature sensor 67 is provided on the inside of the box of the lid 20, detects the temperature of the in-box space 10a, and transmits the detected temperature to the microcomputer 60 (the microcomputer 60 detects the in-box temperature based on a signal from the in-box temperature sensor 67). The outside temperature sensor 68 is provided outside the case of the lid body 20, detects the outside air temperature, and transmits the outside air temperature to the microcomputer 60 (the microcomputer 60 detects the outside temperature based on a signal from the outside temperature sensor 68).
The charging circuit 61 is a circuit that charges the battery pack 54 with a direct-current voltage (hereinafter, referred to as "adapter voltage") input from an external power supply via an AC adapter. The charging circuit 61 includes a charging IC62, a transformer 63, and a switching element Q1 such as an FET and an IGBT. The charging IC62 generates a charging voltage of the battery pack 54 on the secondary side of the transformer 63 based on the switching control of the switching element Q1. The adapter voltage is also supplied to the regulator 64, and even in a state where the battery pack 54 is not mounted, the operating voltage can be supplied to the microcomputer 60 via the regulator 64. The adapter voltage is also supplied to the DC/DC converter 65, and the driving voltage can be supplied to the peltier element 30, the upper fan 32, and the lower fan 34 even in a state where the battery pack 54 is not mounted.
Fig. 17 is a control flowchart of the cold-warm box 1. When the adapter voltage is input (yes at S1), the power button 51a is turned on (yes at S2), and the battery pack 54 is mounted (yes at S3), the microcomputer 60 controls the battery charging if the charging of the battery pack 54 is required (yes at S4), that is, if the battery pack 54 is not fully charged (S5). The microcomputer 60 may control the peltier element 30 in parallel with the charging control (S6 to S11 described later). In this case, the driving of the peltier element 30 may be fixed to the energy saving mode from the viewpoint of speeding up the charging (S10). When the charging is completed, the high power mode may be set (S8, S11).
When the battery pack 54 is not mounted (no at S3) and when charging of the battery pack 54 is not required, the microcomputer 60 confirms whether the cooling mode or the warming mode is performed (S6), and switches the switch mechanism 66 according to the mode. The microcomputer 60 checks whether the high power mode or the energy saving mode is performed in both the cold keeping mode and the warm keeping mode (S7, S9), and drives the peltier element 30 at a duty ratio of 100% by controlling the switching element Q4 in the high power mode (S8, S11). In the energy saving mode, the microcomputer 60 drives the peltier element 30 at a duty ratio of 65% based on the control of the switching element Q4 (S10). The microcomputer 60 drives the upper fan 32 and the lower fan 34 based on the control of the switching elements Q2 and Q3 in parallel with the driving of the peltier element 30.
When the adapter voltage is not input (no at S1), the microcomputer 60 confirms whether the cooling mode or the warming mode is performed when the power button 51a is turned on (yes at S21) (S22), and switches the switch mechanism 66 according to the mode. The microcomputer 60 checks whether the high power mode or the energy saving mode is performed in both the cold keeping mode and the warm keeping mode (S23, S30), and drives the peltier element 30 at a duty ratio of 100% based on the control of the switching element Q4 in the high power mode (S24, S37). In the energy saving mode, the microcomputer 60 drives the peltier element 30 at a duty ratio of 65% based on the control of the switching element Q4 (S31). The microcomputer 60 drives the upper fan 32 and the lower fan 34 based on the control of the switching elements Q2 and Q3 in parallel with the driving of the peltier element 30. Further, when the power button 51a is not turned on in steps S2 and S21, the standby is continued until the on.
Next, the power consumption reduction control during the cooling operation will be described. When the microcomputer 60 drives the peltier element 30 at a duty ratio of 100% in the cold insulation mode (S24), if the inside temperature detected by the inside temperature sensor 67 is lower than the outside air temperature (outside temperature) detected by the outside temperature sensor 68 by 20 ℃ or higher (yes in S25), the power supply to the peltier element 30, the upper fan 32, and the lower fan 34 is stopped (S26). After a predetermined time has elapsed after the microcomputer 60, the lower fan 34 is driven for several minutes (S27), and the intermittent driving of the lower fan 34 is repeated while the peltier element 30 and the upper fan 32 are kept stopped (S26) as long as the internal temperature of the box is equal to or lower than the outside air temperature of-15 ℃ (yes at S28) (S27). When the temperature in the cabinet exceeds the outside air temperature of-15 ℃ (no at S28), the microcomputer 60 drives the peltier element 30 at a duty ratio of 100% (S29), drives the upper fan 32 and the lower fan 34, and returns to step S25.
When the microcomputer 60 drives the peltier element 30 at a duty ratio of 65% in the cold insulation mode (S31), if the inside temperature detected by the inside temperature sensor 67 is lower than the outside air temperature (outside temperature) detected by the outside temperature sensor 68 by 15 ℃ or higher (yes in S32), the power supply to the peltier element 30, the upper fan 32, and the lower fan 34 is stopped (S33). After a predetermined time has elapsed, the microcomputer 60 drives the lower fan 34 for several minutes (S34), and repeats the intermittent driving of the lower fan 34 while maintaining the stop of the peltier element 30 and the upper fan 32 (S33) as long as the internal temperature of the cabinet is equal to or lower than-10 ℃ (yes at S35) (S34). When the temperature in the cabinet exceeds the outside air temperature by-10 ℃ (no at S35), the microcomputer 60 drives the peltier element 30 at a duty ratio of 100% (S36), drives the upper fan 32 and the lower fan 34, and returns to step S32.
Note that the microcomputer 60 performs power consumption reduction control during the warm-up operation as well as during the cold-up operation, and illustration thereof is omitted in fig. 17.
Fig. 18 is a timing chart showing an example of the operation of the cold-warm box 1. The timing chart of fig. 18 shows, in order from above, example 1 of the duty ratio of the voltage supplied to the peltier element 30 and example 2 of the duty ratio, in which the peltier element 30 and the upper fan 32 are driven (turned on) and stopped (turned off), the lower fan 34 is driven and stopped, the temperature in the box is changed during the cooling operation, the temperature in the box is changed during the warming operation, and the voltage is supplied to the peltier element 30. At time t0, when the power supply of the cold-warm box 1 is turned on, the microcomputer 60 drives the peltier element 30, the upper fan 32, and the lower fan 34. At time t1 after a predetermined time has elapsed since the power was turned on, the microcomputer 60 checks the inside temperature and the outside air temperature, and in the example of fig. 18, the inside temperature is equal to or lower than a first temperature lower by a predetermined temperature (for example, 20 ℃) than the outside air temperature during the cooling operation, or the inside temperature is equal to or higher than a second temperature higher by a predetermined temperature (for example, 40 ℃) than the outside air temperature during the warming operation, and therefore the peltier element 30, the upper fan 32, and the lower fan 34 are stopped in either case. After time t1, until the temperature in the box exceeds a third temperature lower than the outside air temperature by a predetermined temperature (for example, 15 ℃) during the cooling operation and until the temperature in the box becomes equal to or lower than a fourth temperature higher than the outside air temperature by a predetermined temperature (for example, 35 ℃) during the warming operation, the microcomputer 60 intermittently drives the lower fan 34 while maintaining the peltier element 30 and the upper fan 32 at a stop. At time t2, since the temperature in the box exceeds the third temperature during the cooling operation or becomes equal to or lower than the fourth temperature during the warming operation, the microcomputer 60 restarts driving the peltier element 30 and the upper fan 32, and the lower fan 34 also returns to the continuous driving. Thereafter, at time t3, since the internal temperature becomes equal to or lower than the first temperature during the cooling operation or the internal temperature becomes equal to or higher than the second temperature during the warming operation, the power consumption amount reduction control is performed in the same manner as from time t1 to t 2. The duty ratio of the drive voltage of the peltier element 30 in the power consumption reduction control is not limited to 0% (off) as shown in example 1, but may be 10% (weak drive) as shown in example 2. The duty ratio of the driving voltage of the peltier element 30 in the normal control is not limited to 100% as shown in example 1, and may be 90% as shown in example 2. Note that, in fig. 18, the cooling operation and the warming operation are illustrated at the same time, but actually, the operation modes are independently controlled according to the selected operation mode.
According to the present embodiment, the following effects can be obtained.
(1) Since the cover 20 is provided with the peltier element 30, the upper fin 31, the upper fan 32, the lower fin 33, and the lower fan 34, the heating or cooling efficiency is higher than that of a structure in which only peltier elements are arranged as in the related art.
(2) Since the battery pack 54 is a battery pack for driving the electric power tool, the versatility is high.
(3) Since the battery pack 54 can be attached and detached, unlike the case of using a built-in battery that cannot be attached and detached, even if the battery pack 54 has reached the end of its life or has failed, the cold-hot box 1 can be used by replacing it with another battery pack 54, and if a spare battery pack 54 is provided, the cold-hot box 1 can be continuously used by replacing it even if the amount of electricity is used up (the driving time can be extended).
(4) Since the peltier element 30, the upper fin 31, the upper fan 32, the lower fin 33, and the lower fan 34 are disposed so as to be offset from the center of the lid body 20 toward the power supply box 50, the wiring 56 may be short, and the recess 23a may be provided on the side opposite to the power supply box 50 in the lower portion of the lid body 20 that is left by the offset, so that the in-box space 10a can be enlarged to increase the capacity.
(5) By using the foamed polyurethanes 19 and 29 as the heat insulating material and filling the foamed polyurethanes 19 and 29 after the wiring 56 is laid, the wiring 56 can easily pass through the foamed polyurethanes 19 and 29.
(6) Since the power supply box 50 is separate from the main body 10, a watertight structure is easily formed.
(7) When the internal temperature of the case satisfies the predetermined condition during the battery driving, that is, when the internal temperature of the case is equal to or lower than the first temperature in the cooling mode or when the internal temperature of the case is equal to or higher than the second temperature in the warm mode, the microcomputer 60 performs the power consumption reduction control, and therefore, compared to the case where the peltier element 30 is driven at the duty ratio of 100% regardless of the internal temperature, the power consumption can be reduced and the driving time of the battery pack 54 can be extended. In particular, when a coolant is contained in the case, unnecessary driving of the peltier element 30 can be suppressed, and power consumption can be effectively reduced.
(8) Since the first to fourth temperatures are set in relation to the outside air temperature, the power consumption amount reduction control that is optimal in accordance with the capability of the peltier element 30 can be performed as compared with the case where the temperatures are set independently of the outside air temperature.
(9) In the power consumption reduction control, the lower fan 34 is intermittently driven to circulate the air in the case while the peltier element 30 is stopped, so that the temperature difference between the upper portion and the lower portion in the case can be reduced to make the temperature in the case uniform, and efficient operation can be performed.
(10) The peltier element 30, the fans 32 and 34, and the wiring to the circuit board 55 can be optimally arranged. Further, lid 20 can be made lighter than when battery pack 54 is disposed on lid 20, and lid 20 can be opened and closed easily. Further, as compared with the case where the peltier element 30 and the fans 32 and 34 are disposed on the main body 10 side, the recess 23a can be provided so as to ensure a space on the left and right sides of the in-box space 10a and a space on the upper and lower sides.
While the present invention has been described above by way of examples of the embodiments, it will be understood by those skilled in the art that various modifications can be made to the components and the processing steps of the embodiments within the scope of the claims. Modifications are shown below.
In the embodiment, the present invention has been described by taking the cold-warm box 1 capable of heating and cooling as an example, but the present invention can be applied to any of an incubator capable of only heating and an incubator capable of only cooling.
Description of the symbols
1-a cooling and warming box, 10-a body, 11-a side surface portion, 12-a bottom surface portion, 13-a locking mechanism, 14-a rotation support portion, 15-a recess, 16-a shoulder strap, 17-a handle portion, 18-a connecting member, 19-a foamed polyurethane (heat insulating material), 20-a cover, 21-an upper surface portion, 22-a side surface portion, 23-a lower surface portion, 24-a storage portion, 24 a-a storage portion cover, 25-an upper air inlet, 26-an upper air outlet, 29-a foamed polyurethane (heat insulating material), 30-a peltier element (thermoelectric element), 31-an upper fin (first fin), 32-an upper fan (first fan), 33-a lower fin (second fin), 34-a lower fan (second fan), 35-a lower fan cover, 36-a lower air inlet, 37-a lower air outlet, 50-a power supply box, 51-an operation panel, 51 a-a power supply button, 51 b-mode switching button, 51 c-cold-keeping mode display lamp, 51 d-warm-keeping mode display lamp, 51 e-power switching button, 51 f-high power mode display lamp, 51 g-energy-saving mode display lamp, 51 h-charging display lamp, 52-DC input section cover, 53-battery insertion section cover, 54-battery pack, 55-circuit substrate, 56-wiring, 57-watertight seal, 60-microcomputer (control section), 61-charging circuit, 62-charging IC, 63-transformer, 64-regulator (power supply circuit), 65-DC/DC converter, 66-switching mechanism, 67-in-box temperature sensor, 68-out-box temperature sensor.
Claims (21)
1. An electrical device, comprising:
a body having an intra-tank space therein; a lid body provided on an upper portion of the main body and openable and closable with respect to the main body; a rotation support part for supporting the cover body in an openable and closable manner; a thermoelectric element capable of heating or cooling the inside of the case; a first fan provided outside the case of the thermoelectric element; a second fan provided inside the case of the thermoelectric element; an in-tank temperature sensor for detecting the temperature in the tank; an outside-box temperature sensor for detecting the temperature outside the box; and a control unit for controlling the energization of the thermoelectric element based on whether the detected temperature in the tank satisfies a predetermined condition or not,
a power supply box for detachably driving the battery of the thermoelectric element is arranged on the side surface of the main body.
2. The electrical device of claim 1,
the predetermined condition is a condition that an absolute value of a difference between the detected temperature inside the tank and the detected temperature outside the tank is equal to or greater than a predetermined value, and the power supply to the thermoelectric element is reduced by comparing a case where the predetermined condition is satisfied with a case where the predetermined condition is not satisfied.
3. The electrical device of claim 2,
the control unit intermittently drives the second fan while reducing power supply to the thermoelectric element.
4. The electrical device of claim 1,
a second fin for increasing a heat transfer area of the thermoelectric element is further provided on a side of the second fan, the second fan is a centrifugal fan, and the in-box temperature sensor is provided on a side of the second fan and on an upstream side of the second fin in a flow path generated by the second fan.
5. The electrical apparatus of any one of claims 2 to 4,
the control unit reduces power supply to the first fan by comparing a case where the temperature in the tank satisfies a predetermined condition with a case where the temperature in the tank does not satisfy the predetermined condition.
6. The electrical device of claim 1 or 4,
a first fin for increasing a heat transfer area of the thermoelectric element and an opening provided at a side of the first fin are further provided between the first fan and the thermoelectric element, the first fan is an axial flow fan, and the outside-box temperature sensor is provided in a flow path formed by the axial flow fan, the first fin, and the opening.
7. The electrical apparatus of any one of claims 1 to 4,
the thermoelectric element, the first fan, and the second fan are provided on the cover.
8. The electrical device of claim 7,
the thermoelectric element is provided on the power supply box side of the lid body, and a recess facing the space in the case is provided on the inside of the case of the lid body on the side opposite to the thermoelectric element.
9. The electrical device of claim 8,
the power supply box has a battery insertion part cover which can cover the battery in an opening and closing mode.
10. The electrical apparatus of any one of claims 1 to 4,
the control unit includes a charging circuit for charging the battery with power supplied from the outside.
11. The electrical device of claim 10,
the power supply to the thermoelectric element is reduced during the charging of the battery as compared with during the non-charging.
12. The electrical device of claim 11,
when the charging of the battery is completed, the power supply to the thermoelectric element is restored.
13. The electrical device of claim 10,
the electric device may further include a dc voltage input connection unit for supplying a dc voltage from outside to the thermoelectric element via an adapter, and the battery may be charged in a state where the dc voltage is input from outside via the adapter.
14. The electrical device of claim 13,
the cover body has a receiving portion capable of receiving the adapter.
15. The electrical apparatus of any one of claims 1 to 4,
the battery can be used for an electric tool.
16. An electrical device, comprising:
a body having an intra-tank space therein; a lid body provided on an upper portion of the main body and openable and closable with respect to the main body; a rotation support part for supporting the cover body in an openable and closable manner; a thermoelectric element capable of heating or cooling the inside of the case; an in-tank temperature sensor for detecting the temperature in the tank; and a control unit for controlling the energization of the thermoelectric element based on the detected temperature in the case,
a power supply box for detachably driving the battery of the thermoelectric element is arranged on the side surface of the main body,
the power supply box is provided with a circuit board on which the control unit is mounted.
17. An electrical device, comprising:
a body having an intra-tank space therein; a lid body provided on an upper portion of the main body and openable and closable with respect to the main body; a rotation support part for supporting the cover body in an openable and closable manner; a thermoelectric element capable of heating or cooling the inside of the case; a first fan provided outside the case of the thermoelectric element; a first fin provided between the first fan and the thermoelectric element; a second fan provided inside the case of the thermoelectric element; and a second fin provided on a side of the second fan,
the thermoelectric element, the first fan, the first fin, the second fan, and the second fin are provided on the cover.
18. The electrical device of claim 17,
an in-tank temperature sensor for detecting the temperature in the tank,
the second fan is a centrifugal fan,
the in-box temperature sensor is provided on a side of the second fan and on an upstream side of the second fin in the flow path generated by the second fan.
19. The electrical device of claim 17 or 18,
an outside temperature sensor for detecting the outside temperature of the tank and an opening provided on the side of the first fin,
the first fan is an axial flow fan,
the outside-box temperature sensor is provided in a flow path formed by the axial flow fan, the first fin, and the opening.
20. An electrical device, comprising:
a body having an intra-tank space therein; a lid body provided on an upper portion of the main body and openable and closable with respect to the main body; a rotation support part for supporting the cover body in an openable and closable manner; a thermoelectric element capable of heating or cooling the inside of the case; an in-tank temperature sensor for detecting the temperature in the tank; and a control unit for controlling the energization of the thermoelectric element based on whether the detected temperature in the tank satisfies a predetermined condition or not,
the predetermined condition is a condition that an absolute value of a difference between the detected temperature inside the tank and the detected temperature outside the tank is equal to or greater than a predetermined value,
the control unit drives the thermoelectric element in a state where power supply to the thermoelectric element is reduced when the predetermined condition is satisfied, as compared with when the predetermined condition is not satisfied.
21. An electrical device, comprising:
a body having an intra-tank space therein; a lid body provided on an upper portion of the main body and openable and closable with respect to the main body; a rotation support part for supporting the cover body in an openable and closable manner; a thermoelectric element capable of heating or cooling the inside of the case; and a control unit for controlling the energization of the thermoelectric element,
a power supply box having a cover for covering the battery and capable of attaching and detaching the battery for driving the thermoelectric element is provided on a side surface of the main body, and an elastic material is provided between the power supply box and the cover.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-232667 | 2016-11-30 | ||
| JP2016232667 | 2016-11-30 | ||
| PCT/JP2017/041996 WO2018101144A1 (en) | 2016-11-30 | 2017-11-22 | Hot or cold storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210740827U true CN210740827U (en) | 2020-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201790001478.3U Active CN210740827U (en) | 2016-11-30 | 2017-11-22 | Electrical device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2018101144A1 (en) |
| CN (1) | CN210740827U (en) |
| WO (1) | WO2018101144A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7302809B2 (en) * | 2019-02-20 | 2023-07-04 | 株式会社Ｅサーモジェンテック | Insulated container |
| JP7363672B2 (en) | 2020-05-26 | 2023-10-18 | 株式会社デンソー | cooling system |
| WO2022172774A1 (en) | 2021-02-09 | 2022-08-18 | 工機ホールディングス株式会社 | Electric device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610574B2 (en) * | 1989-03-15 | 1994-02-09 | 株式会社是沢鉄工所 | Portable box |
| KR930006408A (en) * | 1991-09-30 | 1993-04-21 | 박원희 | Combined thermoelectric refrigeration / heating device with thermoelectric semiconductor elements |
| JP3446280B2 (en) * | 1994-01-10 | 2003-09-16 | 松下電工株式会社 | Cold and hot storage |
| JPH1068570A (en) * | 1996-08-27 | 1998-03-10 | Matsushita Electric Works Ltd | Electronic cooling and warming cabinet |
| GB2331838A (en) * | 1997-11-24 | 1999-06-02 | Coolbox | Portable,thermoelectric,temperature controlled receptacles. |
| JP3935291B2 (en) * | 1999-06-25 | 2007-06-20 | シチズンホールディングス株式会社 | Power adapter housing for electrical equipment |
| JP2007139328A (en) * | 2005-11-18 | 2007-06-07 | Seishi Takagi | Cooling/cold insulating vessel and peltier module thereof |
| JP5686982B2 (en) * | 2010-03-29 | 2015-03-18 | ホシザキ電機株式会社 | Cooling storage |
| JP6067519B2 (en) * | 2011-04-22 | 2017-01-25 | 株式会社マキタ | Fan |
| JP5884716B2 (en) * | 2012-12-11 | 2016-03-15 | トヨタ自動車株式会社 | In-vehicle system |
| JP2014178106A (en) * | 2013-02-18 | 2014-09-25 | Cbc Est Co Ltd | Temperature-controlled conveyance box |
| JP6473968B2 (en) * | 2014-12-18 | 2019-02-27 | パナソニックＩｐマネジメント株式会社 | Heat storage |
| JP6769031B2 (en) * | 2016-01-06 | 2020-10-14 | 工機ホールディングス株式会社 | Electrical equipment |
-
2017
- 2017-11-22 JP JP2018553808A patent/JPWO2018101144A1/en active Pending
- 2017-11-22 CN CN201790001478.3U patent/CN210740827U/en active Active
- 2017-11-22 WO PCT/JP2017/041996 patent/WO2018101144A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018101144A1 (en) | 2019-08-08 |
| WO2018101144A1 (en) | 2018-06-07 |
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