RU2594371C2 - Electronic temperature control device, cooler using same, heater using same, and control method thereof - Google Patents

Abstract

FIELD: electronics.

SUBSTANCE: invention relates to electronics and can be used for temperature control. Electronic device to control temperature, cooler, using, heater, using it, and control method therefore are provided. Electronic control device comprises temperature thermoelectric module, including first metal element, having one end in contact with object, and second metal element, having one end connected to other end of first metal element, voltage applied to one end of first metal element and other end of second metal element; voltage supply unit supplying first voltage or variable voltage with range from second voltage to third voltage, in thermoelectric module; and controller which controls voltage supplied in thermoelectric module voltage by power supply unit, according to difference between temperature of object or first metal element and final temperature.

EFFECT: technical result is increased efficiency of temperature control.

25 cl, 13 dwg

Description

FIELD OF THE INVENTION

The present invention relates to an electronic temperature control device for controlling the temperature of an object using a thermoelectric module, a cooler using it, a heater using it, and a method for controlling it.

State of the art

The thermoelectric effect refers to the conversion of energy between heat and electricity, namely the phenomenon in which the carriers inside the device move to create an electromotive force when there is a temperature difference between the two ends of the conversion device.

Research on the thermoelectric phenomenon began in the early 1900s and has advanced enough to allow the institute to them. Ioffe of the former Soviet Union received a conversion efficiency of about 4%, and currently the conversion efficiency is about 10%. Thermoelectricity can be divided into the Seebeck effect, in which the electromotive force is obtained using temperature differences between the two parts, the Peltier effect, in which cooling and heating are performed using the electromotive force, and the Thomson effect, in which the electromotive force occurs due to the temperature difference of the conductive wire or strips, while the basic technology regarding the field of materials or the technology of systems for the production process has come to the fore.

Thermoelectric materials can be divided into room temperature material, medium temperature material, and high temperature material according to temperature ranges based on thermoelectric characteristics. A solid solution-based Bi ₂ Te ₃ alloy having the composition (Bi, Te) ₂ Te ₃ and Bi ₂ (Te, Se) ₃ has excellent thermoelectric characteristics. The generation and thermoelectric cooling module using such thermoelectric materials has a structure in which n-type thermoelectric devices and p-type thermoelectric devices are electrically connected in series and thermally connected in parallel.

In a thermoelectric module, when heat is transferred from a high temperature part to a low temperature part due to the temperature difference between them, electrons and holes are transferred from a high temperature part to a low temperature part in an n-type thermoelectric device and a p-type thermoelectric device , accordingly, thus creating electricity, and in the thermoelectric module, when current flows, cooling occurs on one side of it, while heating occurs on the other due to the movement of carriers, so thus providing cooling and heating.

The efficiency of a thermoelectric module is determined by thermoelectric characteristics, such as thermoelectromotive force, thermal conductivity or resistance of thermoelectric materials of n-type and p-type and the number of connected thermoelectric devices.

Also, a cooling circuit using a thermoelectric module has a high sensitivity of thermal reaction, provides locally selective cooling and has a simple design without moving parts, and thus it is made for partial cooling of electronic components, such as a high-performance powerful transistor, laser diode, etc. , and can also be used for general purposes, for example, for a refrigerator in vehicles, for household refrigerators and air conditioners, etc.

Also, since the use of chlorofluorocarbons (CFC) in vehicles, domestic air conditioners and refrigerators, etc. regulated, the development of air conditioning systems using thermoelectric materials that can be used for cooling without a coolant is a promising area.

The thermoelectric module takes advantage of the fact that heat is transferred from the low-temperature region to the high-temperature region due to the Peltier effect, when current flows along a circuit including a connection between different materials. Based on this principle, a thermoelectric cooler can be made by connecting multiple transitions in series.

Disclosure of invention

Technical problem

An aspect of the present invention provides an electronic temperature control device for controlling an object's temperature using a thermoelectric module, a cooler using it, a heater using it, and a method for controlling it.

Solution

According to another aspect of the present invention, there is provided an electronic temperature control device comprising: a thermoelectric module including a first metal element having one end in contact with an object, and a second metal element having one end connected to the other end of the first metal element, voltage applied to one end of the first metal element and the other end of the second metal element; a voltage supply unit supplying a first voltage or an alternating voltage having a range from a second voltage to a third voltage to a thermoelectric module; and a controller that controls the voltage supplied to the thermoelectric module by the voltage supply unit, according to the difference between the temperature of the object or the first metal element and the final temperature, in which the first voltage is higher than the third voltage and is a fixed voltage.

When the difference between the temperature of the object or the first metal element and the final temperature is equal to or greater than the first preset value, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module, and when the difference between the temperature of the object or the first metal element and the final temperature is less than the first of the set value, the controller can control the voltage supply unit for applying alternating voltage to thermoelectric tric module.

When the difference between the temperature of the object or the first metal element and the final temperature is within a predetermined range, the controller can adjust the voltage supplied to the thermoelectric module in proportion to the difference between the final temperature and the temperature of the object or the first metal element.

When the difference between the temperature of the object or the first metal element and the final temperature is equal to or higher than the first pre-set value, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or first metal element reaches the final temperature, and when the temperature of the object or the first metal element reaches the final temperature, the controller can control the voltage supply unit for supply of alternating voltage to the thermoelectric module.

The controller can compare the final temperature with the temperature of the object or the first metal element, and if the temperature peaks have opposite directions, the controller can switch the connection state between one end of the first metal element and the other end of the second metal element to change the direction of the potential peaks of one end of the first metal element and the other end of the second metal element.

When the controller further compares the temperature of the second metal element or the outside temperature with the final temperature, and the voltage supply unit supplies alternating voltage to the thermoelectric module, the controller can correct the magnitude of the applied alternating voltage.

When the difference between the temperature of the object or the first metal element and the final temperature is equal to or greater than the first preset value, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is less than the first preset values, the controller can control the voltage supply unit to supply alternating voltage to the thermoelectric matic module, and when the difference between the temperature of the second metallic element or the outdoor temperature and the final temperature exceeds the second preset value, the controller may narrow predetermined range.

The electronic temperature control device may further include a fan located on the other side of the second metal element of the thermoelectric module.

When the difference between the temperature of the object or the first metal element and the final temperature is outside the preset range, the controller can rotate the fan at the first speed, and when this difference between the temperature of the object or the first metal element and the final temperature is within the preset range, the controller can rotate the fan at a second speed, and the first speed may be higher than the second speed.

The controller can detect the voltage supplied to the thermoelectric module by the voltage supply unit, and control feedback the voltage supplied by the voltage supply unit to the thermoelectric module.

According to an aspect of the present invention, a cooler is provided, comprising: a storage unit storing a refrigerated object; thermoelectric module including a first metal element having one end in contact with the storage unit or located inside the storage unit, and a second metal element having one end connected to the other end of the first metal element and located outside the storage unit, the voltage applied to one end the first metal element and the other end of the second metal element; a voltage supply unit supplying a first voltage or an alternating voltage having a range from a second voltage to a third voltage to a thermoelectric module; and a controller that controls the voltage supplied to the thermoelectric module by the voltage supply unit according to the difference between the temperature of the object or the first metal element and the final temperature when the temperature of this object or the first metal element is higher than the final temperature, the first voltage being higher than the third voltage and being a fixed voltage.

When the temperature of the object or the first metal element has a level equal to or higher than the preset range from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module, and when the temperature of the object or the first metal element has a level below the preset range from the final temperature, the controller can control the voltage supply unit to supply alternating voltage to the thermoelectric module.

When the temperature of the object or the first metal element is below a predetermined range from the final temperature, the controller can supply voltage to the thermoelectric module proportional to the difference between the final temperature and the temperature of the object or the first metal element.

When the temperature of the object or the first metal element has a level equal to or higher than the preset range from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or first metal element reaches the final temperature, and when the temperature of the object or the first metal element reaches the final temperature, the controller can control the voltage supply unit to supply AC voltage in the thermoelectric module.

When the temperature of the object or the first metal element is different from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature, when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element is equal to or lower than the final temperature, the controller can control the unit m supply voltage to supply alternating voltage to the thermoelectric module, when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the final temperature and below the first preset value, the controller can control the voltage supply unit to supply the third voltage to thermoelectric module, and when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the first preset value, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module.

When the temperature of the second metal element or the outside temperature of the storage unit exceeds the final temperature by a preset value, the controller can adjust the amplitude of the alternating voltage when the voltage supply unit supplies alternating voltage to the thermoelectric module.

When the temperature of the object or first metal element has a level equal to or higher than the preset range from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module, when the temperature of the object or first metal element has a level below the preset range from the final temperature , the controller can control the voltage supply unit to supply alternating voltage to the thermoelectric module, and to when the temperature of the second metal element or the outside temperature of the storage unit exceeds the final temperature by a preset value, the controller may narrow the preset range.

The electronic temperature control device may further include a fan located on the other side of the second metal element of the thermoelectric module.

When the temperature of the object or the first metal element has a level equal to or higher than the preset range from the final temperature, the controller can rotate the fan at a first speed, and when the temperature of the object or the first metal element has a level below the preset range from the final temperature, the controller can rotate the fan at a second speed, the first speed being higher than the second speed.

According to an aspect of the present invention, there is provided a heater, including: a storage unit storing a heated object; thermoelectric module including a first metal element having one end in contact with the storage unit or located inside the storage unit, and a second metal element having one end connected to the other end of the first metal element and located outside the storage unit, the voltage applied to one end the first metal element and the other end of the second metal element; a voltage supply unit supplying a first voltage or an alternating voltage having a range from a second voltage to a third voltage to a thermoelectric module; and a controller that controls the voltage supplied to the thermoelectric module by the voltage supply unit according to the difference between the temperature of the object or the first metal element and the final temperature when the temperature of this object or the first metal element is lower than the final temperature, the first voltage being higher than the third voltage and being a fixed voltage.

When the temperature of the object or the first metal element is below a predetermined range from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module, and when the temperature of the object or the first metal element has a level exceeding the preset range from the final temperature, the controller can control the voltage supply unit to supply alternating voltage to the thermoelectric module.

When the temperature of the object or the first metal element has a level exceeding the pre-set range from the final temperature, the controller can supply the thermoelectric module in proportion to the difference between the final temperature and the temperature of the object or the first metal element.

When the temperature of the object or the first metal element is below a predetermined range from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature, and when the temperature of the object or the first metal element reaches the final temperature, the controller can control the voltage supply unit to supply alternating voltage o voltage to the thermoelectric module.

When the temperature of the object or the first metal element is different from the final temperature, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature, when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element is equal to or higher than the final temperature, the controller can control the unit m of supplying voltage to supply alternating voltage to the thermoelectric module, when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or first metal element is lower than the final temperature and exceeds the first preset value, the controller can control the voltage supply unit to supply the third voltage to thermoelectric module, and when the temperature of the object or the first metal element reaches the final temperature, and those Since the temperature of the object or the first metal element is lower than the first preset value, the controller can control the voltage supply unit to supply the first voltage to the thermoelectric module.

According to another aspect of the present invention, there is provided a method for controlling an electronic temperature control device comprising a thermoelectric module comprising a first metal element having one end in contact with an object and a second metal element having one end connected to the other end of the first metal element, voltage, applied to one end of the first metal element and the other end of the second metal element, including: the operation of setting the temperature at which second set or a preset inlet temperature as the final temperature; a temperature detecting operation at which the temperature of the object or the first metal element is detected; the operation of determining the voltage mode, which determines the voltage mode by determining which voltage to supply to the thermoelectric module, the first or alternating voltage having a range from the second voltage to the third voltage, using the difference between the temperature of the object or the first metal element and the final temperature; and a voltage selection operation, at which the amplitude of the alternating voltage is selected using the difference between the temperature of the object or the first metal element and the final temperature, when it was decided to apply alternating voltage to the thermoelectric module, in which the first voltage is higher than the third voltage and is a fixed voltage.

The operation of determining the voltage mode may include: an operation in the constant voltage mode, at which the first voltage is supplied to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is outside a predetermined range; and an operation in the alternating voltage mode, at which an alternating voltage is supplied to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is within a predetermined range.

The operation of determining the voltage mode may include: the operation in constant voltage mode, at which the first voltage is supplied through the voltage supply unit to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature, when the difference between the temperature of the object or the first metal element and the final temperature is outside the preset range; and an operation in the alternating voltage mode, at which an alternating voltage is supplied through the voltage supply unit to the thermoelectric module when the temperature of the object or the first metal element reaches the final temperature.

The operation of determining the voltage mode when the electronic temperature control device cools the object may include: an operation in the first constant voltage mode, where the first voltage is supplied through the voltage supply unit to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature when the temperature of the object or the first metal element is different from the final temperature; an operation in a first alternating voltage mode, in which an alternating voltage is supplied to the thermoelectric module by the voltage supply unit when the temperature of the object or the first metal element reaches a final temperature and the temperature of the object or first metal element is lower than the final temperature; an operation in a second alternating voltage mode, in which a third voltage is supplied to the thermoelectric module by means of a voltage supply unit when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the final temperature and below the first preset value; and an operation in the second constant voltage mode, in which the first voltage is supplied to the thermoelectric module by the voltage supply unit when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the final temperature.

In the voltage selection operation, the voltage supplied to the thermoelectric module can be adjusted in proportion to the difference between the final temperature and the temperature of the object or the first metal element.

The control method of the electronic temperature control device may further include: an operation mode change operation, which compares the final temperature with the temperature of the object or the first metal element and switches the connection state between the voltage supply unit and one end of the first metal element and the other end of the second metal element of the thermoelectric module, when the temperature peaks have opposite directions according to the result of the comparison.

In the voltage selection operation, the temperature of the second metal element or the outside temperature can be further compared with the final temperature to correct the amplitude of the alternating voltage when the alternating voltage is supplied to the thermoelectric module by the voltage supply unit.

The operation of determining the voltage mode may include: an operation in the constant voltage mode, at which the first voltage is supplied to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is outside a predetermined range; an operation in the alternating voltage mode, at which an alternating voltage is supplied to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is within the preset range, and a correction operation, on which the preset range is narrowed, when the difference between the temperature of the second metal element or the outside temperature and the final temperature exceeds the preset value.

The electronic temperature control device may further include a fan located on the other side of the second metal element of the thermoelectric module, and the method of controlling the electronic temperature control device may further include: a fan driving operation in which the fan is rotated at a first speed when the difference between the temperature of the object or the first metal element and the final temperature is outside the preset range area, and the fan is rotated at a second speed when the difference between the temperature of the object or the first metal member and the final temperature is within a predetermined range, the first speed higher than the second speed.

Preferred Technical Results of the Invention

As stated above, in the case of an electronic temperature control device, a cooler using it, a heater using it, and a method for controlling it according to embodiments of the invention, the object temperature can be controlled by controlling the thermoelectric module at a low power level and with low noise.

Brief Description of the Drawings

FIG. 1 is a view illustrating a temperature control method of a well-known cooler or heater;

FIG. 2 is a view schematically illustrating a configuration of a temperature control apparatus according to an embodiment of the present invention;

FIG. 3 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to an embodiment of the present invention;

FIG. 4 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to another embodiment of the present invention;

FIG. 5 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to another embodiment of the present invention;

FIG. 6 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to an embodiment of the present invention;

FIG. 7 and 8 are flowcharts illustrating a method for controlling an electronic temperature control device according to an embodiment of the present invention, respectively;

FIG. 9-11 are detailed flowcharts illustrating an operation of determining a voltage mode in a method of controlling an electronic temperature control device according to an embodiment of the present invention, respectively;

FIG. 12 is a view schematically illustrating a configuration of a voltage supply unit according to an embodiment of the present invention; and

FIG. 13 is a timing chart illustrating an operation of a voltage supply unit according to an embodiment of the present invention.

Best Mode for Carrying Out the Invention

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that they can be easily implemented by a person skilled in the art to which the present invention relates. In the description of the present invention, if a detailed explanation of the corresponding known function or design is deemed unnecessarily deviating from the essence of the present invention, such an explanation will be excluded, although it will be clear to a person skilled in the technical field.

In order to make the present invention clear for understanding, parts independent of the description will be excluded, and similar reference numbers are used throughout the description.

Except where otherwise clearly stated, the word “comprise” and variations such as “comprises” or “comprising” should be understood as including the elements set forth, but not excluding any other elements.

FIG. 1 is a view illustrating a method of controlling the temperature of a well-known cooler or heater.

A well-known cooler or heater includes a cooling unit and a heating unit, and upon receiving power, the cooling unit and the heating unit absorb the heat of the environment or radiate heat. Here, the degree of cooling or heating is ultimately proportional to the power supplied to the cooling unit or heating unit. Thus, temperature control of a well-known cooler or heater can be achieved by controlling the amplitude of the voltage or current supplied to the cooling unit or heating unit.

In FIG. 1 (a), in order to control the temperature, voltage can be applied to the cooling unit or the heating unit by pulse width modulation (PWM).

In FIG. 1 (b), it can be seen that voltage is applied to the cooling unit or the heating unit by the phase control method, and in FIG. 1 (c), it can be seen that voltage is applied to the cooling unit or the heating unit by the zero crossing method.

Schemes shown in FIG. 1 (b) and 1 (c) apply when AC power is used, and FIG. 1 (a) applies when DC power is used. In all control methods illustrated in FIG. 1, the temperature is controlled by adjusting the time interval over which voltage is applied.

In the case of adjusting the voltage application time interval, intermittent voltage application requires switching. However, in the switching operation, significant switching losses may occur, consuming power. Also, a potentially large amount of switching loss can cause a significant load on the voltage application circuit, resulting in damage to the circuit.

However, in many cases, the heating block or cooling block generally requires a significantly high power level, and the applied voltage or current is required in order to have a small number of ripples. For this reason, equipment, such as a switching power supply (SMPS) or the like, which stably provides high power, is used in temperature control devices.

However, in general, SMPS provides a constant voltage (i.e., a fixed, constant, regular voltage) in order to deliver high power stably, and an SMPS that produces an alternating voltage can be very expensive. Thus, the method for controlling the degree of heating or cooling of the heating unit or cooling unit employs a connection control circuit between the SMPS and the heating unit or cooling unit. Namely, in many cases, the degree of heating or cooling of the heating block or cooling block is controlled using PWM control.

However, as noted above, the use of PWM control leads to a large amount of loss based on the switching operation, significantly impairing the power saving ability that matters for small home devices and the like.

Thus, an electronic temperature control device, a cooler using it, a heater using it, and a method for controlling it according to embodiments of the present invention save power by varying the application voltage according to the temperature section to reduce switching loss.

FIG. 2 is a view schematically illustrating a configuration of a temperature control apparatus according to an embodiment of the present invention.

In FIG. 2, an electronic temperature control device according to an embodiment of the present invention may include a thermoelectric module 100, a voltage supply unit 200, and a controller 300. An electronic temperature control device according to an embodiment of the present invention may further include a fan 400 as necessary.

The thermoelectric module 100 includes a first metal element 110 and a second metal element 120. The first metal element 110 and the second metal element 120 are connected so that current can flow from one to another, and heat can be transferred between them. Here, it is believed that the other end of the first metal element 110 and one end of the second metal element 120 are connected. One end of the first metal element 110 is in contact with an object that requires temperature control (or whose temperature must be controlled). When a voltage is applied to one end of the first metal element 110 and the other end of the second metal element 120, current flows between the first metal element 110 and the second metal element 120, and heat transfer can occur. Here, the first terminal and the second terminal may be mounted at one end of the first metal element 110 and the other end of the second metal element 120, respectively. In the thermoelectric module 100, the heat transfer direction can be determined according to the sign of the voltage applied between one end of the first metal element 110 and the other end of the second metal element 120. Namely, the heat transfer direction can be determined according to the height of the potential of one end of the first metal element 110 and the other end of the second metal element 120.

The voltage supply unit 200 may supply a first voltage or voltage within a range from a second voltage to a third voltage. Namely, the voltage supply unit 200 may supply the first voltage as a constant voltage or may supply an alternating voltage having a range from a second voltage to a third voltage. Here, preferably, the second voltage has a value less than the value of the third voltage, and the first voltage is higher than the third voltage, the maximum AC value of the AC voltage. Namely, the voltage supply unit 200 can supply high voltage as a constant voltage and low voltage as an alternating voltage. When it is considered that the voltage supply unit 200 is difficult to construct, and the manufacturing costs of the voltage supply unit 200 increase, since the AC voltage range and the AC voltage strip are higher, preferably, a high voltage is supplied as a constant voltage and low voltage is supplied to quality of alternating voltage.

The controller 300 may control the voltage supplied from the voltage supply unit 200 to the thermoelectric module 100 according to the difference between the temperature of the object or the first metal element 110 and the final temperature. Namely, according to the temperature of the object as the ultimate for temperature control, the controller 300 can control the temperature of the object by changing the supply voltage from the voltage supply unit 200. Here, if it is difficult to directly measure the temperature of the object, the controller 300 can control the temperature of the first metal element 110, which is balanced by temperature with the object, by changing the supply voltage from the voltage supply unit 200 according to the temperature of the first metal element 110.

In particular, the indication of the output voltage from the voltage supply unit 200 may vary depending on whether the difference between the temperature of the object or the first metal element 110 and the final temperature exceeds a predetermined value, and when the voltage supply unit 200 supplies an alternating voltage, the controller 300 may adjust the magnitude (or amplitude) of the voltage according to the difference between the temperature of the object or the first metal element 110 and the final temperature.

In addition, the controller 300 can control the voltage supplied by the voltage supply unit 200 to the thermoelectric module 100, further comparing the temperature of the second metal element 120 or the outside temperature around the second metal element 120 with the final temperature.

Namely, the controller 300 can control the operation of the thermoelectric module 100, further reflecting the temperature of the second metal element 120, which radiates heat transmitted from the object, or absorbs heat transferred to the object, and the temperature of the peripheral portion of the second metal element 120.

Also, the controller 300 can control the rotational speed of the fan 400 located at the other end of the second metal element 120 according to the difference between the temperature of the object or the first metal element 110 and the final temperature. The reason is that the speed of circulation of the outside air around the second metal element 120 is different according to the rotational speed of the fan 400.

Next, a method for controlling the temperature of an object by a controller 300 of an electronic temperature control device according to an embodiment of the present invention will be described by controlling the voltage supplied from the voltage supply unit 200 to the thermoelectric module 100. However, only the object temperature will be described, but it can also be applied to the temperature control circuit the first metal element 110.

FIG. 3 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to an embodiment of the present invention.

In FIG. 3, the relationship between the object temperature and the supply voltage when performing cooling using an electronic temperature control device according to an embodiment of the present invention can be checked.

When the temperature of the object is higher than the final temperature Ts, the voltage supplied to the thermoelectric module 100 can be adjusted according to the temperature of the final and applied. When the temperature of the object is lower than the final temperature Ts, the voltage supply to the thermoelectric module 100 is stopped to save power and reduce noise.

In FIG. 3 in an electronic temperature control device according to an embodiment of the present invention, in the case (a) when the difference between the object temperature and the final temperature Ts is equal to or greater than the first preset value ΔT, the first voltage V1 is supplied as a constant voltage to the thermoelectric module 100, and cases (b, c, d), when this difference is less than the preset first value ΔТ, an alternating voltage that varies in the range from the second voltage V3 to the third voltage V2, odaetsya a thermoelectric module 100 for cooling the object.

In section b, in the electronic temperature control device according to an embodiment of the present invention, when the difference between the object temperature and the final temperature Ts is less than the first preset value ΔT, the voltage amplitude can be adjusted proportionally to the difference between the object temperature and the final temperature Ts and supplied to the thermoelectric module 100.

In section c, in the electronic temperature control device according to an embodiment of the present invention, when the difference between the object temperature and the final temperature Ts reaches the final temperature Ts, the electronic temperature control device does not work until the object temperature changes by a certain value from the final temperature Ts, and when the temperature of the object changes by a certain value, the electronic temperature control device can apply voltage in proportion to the difference between the temperature object temperature and final temperature Ts. This should reduce energy loss and noise generation due to the frequent operation of the voltage supply unit 200.

In section d, in an electronic temperature control device according to an embodiment of the present invention, when the temperature of the object is different from the final temperature Ts, a voltage is applied proportional to the difference between the temperature of the object and the final temperature Ts, when the difference between the temperature of the object and the final temperature Ts is equal to or greater than the first the set value ΔT, the first voltage V1 as a constant voltage can be supplied to the thermoelectric module 100.

Here, the first preset value ΔT can be the temperature by which the temperature of the object can reach the final temperature Ts within a certain period of time when the third voltage V2 is supplied to the thermoelectric module 100. Namely, the first preset value ΔT can be set by taking into account the third voltage V2 and heat transfer capabilities of the thermoelectric module 100.

Although not shown, the controller 300 can detect the voltage supplied to the thermoelectric module 100 from the voltage supply unit 200 in order to control feedback the voltage supplied by the voltage supply unit 200 to the thermoelectric module 100. Namely, despite being sent the voltage control signal supplied from the voltage supply unit 200, the voltage supplied from the voltage supply unit 200 to the thermoelectric module 100 can vary due to various factors, so the controller 300 can supply the proposed voltage to the thermoelectric module 100 using feedback control.

When the above control methods are combined, the controller 300 can analyze the difference between the temperature of the object and the final temperature Ts to determine how to cool the object, quickly by applying a high DC voltage or slowly by applying an AC voltage having a low voltage strip. Also, in the case of applying an alternating voltage, the amplitude of the alternating voltage can be set using the difference between the temperature of the object and the final temperature Ts.

FIG. 4 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to another embodiment of the present invention.

In FIG. 4 in the electronic temperature control device according to the present embodiment, in the case (a) when the difference between the object temperature and the final temperature Ts is equal to or greater than the first preset value ΔT, the first voltage V1 as a constant voltage can be applied to the thermoelectric module 100, and when the temperature of the object reaches the final temperature Ts, an alternating voltage having a range from the second voltage V3 to the third voltage V2 can be applied to the thermoelectric The module 100 for cooling the object. Namely, a constant voltage can be continuously applied to the object until the temperature of the object reaches the final voltage Ts, in order to quickly cool the object, and when the temperature of the object reaches the final temperature Ts, an alternating voltage can be applied to maintain a cooled state.

In section b, since the temperature of the object is within the range of the final temperature Ts and the first preset value ΔT, an alternating voltage can be supplied to the thermoelectric module 100 to maintain the temperature of the object within the range of the first preset value ΔT. Here, the amplitude of the alternating voltage can be adjusted in proportion to the difference between the temperature of the object and the final temperature Ts, so that it is supplied to the thermoelectric module 100.

As discussed above, the first preset value ΔT can be a temperature by which the temperature of the object can be able to reach the final temperature Ts within a certain period of time when the third voltage V2 is supplied to the thermoelectric module 100. Namely, the first preset value ΔT can be established when taking into account the third voltage V2 and the heat transfer ability of the thermoelectric module 100.

When the above control methods are combined, the controller 300 can analyze the difference between the object temperature and the final temperature Ts and the cooling data (cooling history) to determine how to cool the object quickly by applying a high DC voltage or slowly by applying an AC voltage having a low voltage strip , and the amplitude of the alternating voltage can be set using the difference between the temperature of the object and the final temperature Ts.

FIG. 5 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to another embodiment of the present invention.

In FIG. 5, the relationship between the object temperature and the supply voltage when performing cooling using the electronic temperature control device according to an embodiment of the present invention can be checked. Regarding the voltage supplied to the thermoelectric module 100 of the electronic temperature control device according to an embodiment of the present invention, when the temperature of the object is higher than the final temperature Ts, a constant voltage is applied, and when the temperature of the object is lower than the final temperature Ts, an alternating voltage can be applied. Also, with respect to the voltage supplied to the thermoelectric module 100 of the electronic temperature control device according to an embodiment of the present invention, after the temperature of the object has reached the final temperature Ts, if the temperature of the object rises above the final temperature Ts by a first preset value ΔT or higher, again DC voltage can be applied.

Namely, when the temperature of the object is higher than the final temperature Ts, a constant voltage V1 as a high voltage is supplied for quick cooling. When the temperature of the object reaches the final temperature Ts, the third voltage V2 is applied to maintain a cooled state. When the temperature of the object is lower than the final temperature Ts, an alternating voltage having a range from the second voltage V3 to the third voltage V2 can be applied to prevent overcooling. Here, the amplitude of the alternating voltage can be set using the difference between the temperature of the object and the final temperature Ts. When the temperature of the object increases by a first preset value ΔT above the final temperature Ts, it can be determined that the cooled state cannot be maintained by supplying only the third voltage V2, and again a constant voltage V1 can be applied.

FIG. 6 is a graph showing the relationship between the temperature of an object and the voltage supplied to a thermoelectric module of an electronic temperature control device according to an embodiment of the present invention.

In FIG. 6, the relationship between the object temperature and the supply voltage when performing heating using the electronic temperature control device according to an embodiment of the present invention can be controlled. When the temperature of the object is lower than the final temperature Ts, the voltage supplied to the thermoelectric module 100 can be adjusted according to the temperature of the object. And vice versa, when the temperature of the object is higher than the final temperature Ts, no voltage is applied to it in order to save power and reduce noise.

In FIG. 6 in an electronic temperature control device according to an embodiment of the present invention, when the difference between the object temperature and the final temperature Ts is equal to or greater than the first preset value ΔT, the first voltage V1 as a constant voltage can be supplied to the thermoelectric module 100, and when the temperature of the object reaches final temperature Ts, an alternating voltage having a range from a second voltage V3 to a third voltage V2 can be applied to the thermoelectric mode 100 l for heating of the object. Namely, a constant voltage can be continuously applied to the object until the temperature of the object reaches the final voltage Ts, in order to quickly cool the object, and when the temperature of the object reaches the final temperature Ts, an alternating voltage can be applied to maintain the heated state.

When the above control methods are combined, the controller 300 may analyze the difference between the object temperature and the final temperature Ts and the cooling data (cooling history) to determine how to heat the object quickly by applying a high DC voltage or slowly by applying an AC voltage having a low voltage strip , and the amplitude of the alternating voltage can be set using the difference between the temperature of the object and the final temperature Ts.

According to the heating and cooling method, as described above, by providing a high constant voltage and a voltage having a variable strip having a relatively low maximum value according to the object temperature or the temperature of the first metal element 110, power saving can be increased with increasing temperature control speed.

In the case of the prior art, since the switching operation is performed near the final temperature to maintain the temperature, a large amount of switching loss can occur due to the frequent application of voltage and voltage interruption, and in particular, during such a switching operation, a large amount of heat can be generated from voltage supply unit 200, adding the risk of fire.

However, in the present embodiment, which is described above, after heating or cooling to a final temperature using a constant voltage is performed, the final temperature is controlled to be maintained using an alternating voltage. Thus, since the switching operation is not performed, the power consumption due to the switching operation and the risk of fire due to heating can be significantly reduced.

In addition, unlike the cases illustrated in FIG. 3-5, when the temperature of the object is regulated to maintain within a predetermined range above and below the final temperature, both cooling and heating of the object are required. In detail, since the direction of heat transfer is determined by the potential difference between both ends of the thermoelectric module 100, cooling and heating can be reversed by changing the connection of the positive (+) pole and the negative (-) pole of the voltage supply unit 200 connected to one end of the first metal element 110 and the other end of the second metal element 120.

Corresponding embodiments of the cooling method can be applied to the heating method by changing the design.

Also, although it is not shown when the temperature of the second metal element 120 or the air temperature in contact with the other end of the second metal element 120 has a significant difference from the final temperature, the ability to control high temperature is required. Thus, in this case, the voltage value supplied from the voltage supply unit 200 to the thermoelectric module 100 in the electronic temperature control device needs to be adjusted. Namely, the value of the supply voltage can be increased by a certain amount, or the speed or section in which a high DC voltage is applied can be increased.

In order to increase the section in which a constant voltage is applied, the first preset value can be lowered. In other words, when the difference between the temperature of the second metal element 120 or the outside temperature and the final temperature exceeds a second preset voltage, the first preset value can be lowered. In addition, when the difference between the temperature of the second metal element 120 or the outside temperature and the final temperature is small, the first preset value can be increased.

Next, a method for controlling an electronic temperature control device using the aforementioned temperature control circuit will be described.

FIG. 7 and 8 are flowcharts illustrating a method for controlling an electronic temperature control device according to an embodiment of the present invention, respectively.

An electronic temperature control device according to an embodiment of the present invention may include a thermoelectric module 100, and a control method according to an embodiment of the present invention can be performed by controlling the voltage applied to the thermoelectric module 100.

In FIG. 7 and 8, a method for controlling an electronic temperature control device according to an embodiment of the present invention may include a temperature setting operation 10, a temperature detection operation 20, a voltage mode determination operation 30, and a voltage selection operation 40.

In the temperature setting operation 10, a previously stored or inlet temperature can be set as the final temperature. Namely, a pre-set end temperature or an end temperature desired by the user can be set.

In the temperature detecting operation 20, the temperature of the object or the first metal element 110 can be detected. Temperature detection can be performed using a temperature sensor.

In step 30 of determining the voltage mode, it can be determined which voltage is supplied to the thermoelectric module 100, a first voltage or an alternating voltage having a range from a second voltage to a third voltage, using the difference between the temperature of the object or the first metal element 110 and the final temperature. Preferably, the first voltage may be higher than the third voltage and may have a constant voltage value. For example, when the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value, a high constant voltage can be applied to regulate the temperature of the object to the final temperature with a fast speed, and when the difference between the temperature of the object or the first metal element 110 and the final temperature is less than the first preset value, an alternating voltage is applied to maintain the temperature tours object at finite temperature without incurring the switching losses.

In the voltage selection operation 40, when the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value, the value of the alternating voltage applied to the thermoelectric module 100 can be selected within the range from the second voltage to the third voltage with using the difference between the temperature of the object or the first metal element 110 and the final temperature.

FIG. 9-11 are detailed flowcharts illustrating an operation of determining a voltage mode in a method of controlling an electronic temperature control device according to an embodiment of the present invention, respectively.

In FIG. 9, in step 30 of determining the voltage mode of the electronic temperature control device according to an embodiment of the present invention, the voltage mode can be determined according to whether the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value.

In detail, the voltage mode determination operation 30 may include a determination operation 31, which determines whether the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value, the operation 33 in the constant voltage mode, at which the first voltage as a constant voltage, when the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first a set value, and operation 35 in the alternating voltage mode, on which any one voltage is set within the range from the second voltage to the third voltage, and this voltage is applied when the difference between the temperature of the object or the first metal element 110 and the final temperature is less than the first preset values. According to a voltage mode determining operation 30 of an electronic temperature control device according to an embodiment of the present invention illustrated in FIG. 7, the temperature of the object or the first metal element 110 can be quickly adjusted to a final temperature, while still being within the first preset value.

In FIG. 9, in step 30 of determining the voltage mode of the electronic temperature control device according to an embodiment of the present invention, the voltage mode can be determined according to whether the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value or according to the current voltage mode .

In detail, the voltage mode determination operation 30 may include a determination operation 31, which determines whether the difference between the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value, the operation 33 in the constant voltage mode, at which the first voltage as a constant voltage until the temperature of the object or the first metal element 110 reaches the final temperature, when the difference between the temperature the temperature of the object or the first metal element 110 and the final temperature is equal to or greater than the first preset value, operation 34, in which it is determined whether the temperature of the object or the first metal element 110 has reached the final temperature, and operation 35 in the alternating voltage mode, on which any one voltage within the range from the second voltage to the third voltage, and apply this voltage when the difference between the temperature of the object or the first metal element and 110 and the final temperature is less than the first predetermined value. According to the voltage mode determining operation 30 of the electronic temperature control device according to an embodiment of the present invention, the temperature of the object or the first metal element 110 can be quickly adjusted to a final temperature, while still being within the first preset value.

According to a voltage mode determining operation 30 of an electronic temperature control device according to an embodiment of the present invention illustrated in FIG. 9, the temperature of the object or the first metal element 110 can be quickly adjusted to a final temperature.

In FIG. 11, in the step 30 of determining the voltage mode of the electronic temperature control device according to an embodiment of the present invention, the voltage mode can be determined according to whether the temperature of the object or the first metal element 110 is equal to the final temperature, the current voltage mode, and according to whether the difference between the temperature object or the first metal element 110 and a final temperature equal to or greater than the first preset value.

In detail, the voltage mode determination operation 30 may include an operation 31 for determining whether the temperature of the object or the first metal element 110 is equal to the final temperature, operation 33 in the first constant voltage mode, at which the first voltage is output as constant voltage when the temperature of the object or the first metal element 110 is not equal to the final temperature, operation 34, in which it is determined whether the temperature of the object or the first metal element 110 is equal to the final temperature re, operation 35 in the first alternating voltage mode, on which, by means of the voltage supply unit, any one voltage is set within the range from the second voltage to the third voltage, and this voltage is applied when the temperature of the object or the first metal element 110 reaches the final temperature, and the temperature of the object or the first metal element 110 is equal to or lower than the final temperature, the operation 36, which detect if the difference between the temperature of the object or the first metal of the element 110 and the final temperature, the first preset value, operation 37 in the second constant voltage mode, at which the first voltage is supplied by the voltage supply unit to the thermoelectric module 100 when the temperature of the object or the first metal element 110 reaches the final temperature and the temperature of the object or the first metal element 110 exceeds the first preset value, and operation 38, in which it is determined whether the temperature of the object or the first allicheskogo element 110 final temperature during the operation in the second mode DC voltage. Although not shown, the voltage mode determination operation 30 may further include an operation in the second alternating voltage mode, where a third voltage is supplied by the voltage supply unit to the thermoelectric module 100 when the temperature of the object or the first metal element 110 reaches the final temperature, and the temperature of the object or the first metal element 110 exceeds the final temperature and is equal to or less than the first preset value, unlike the first mode Ima of alternating voltage. The voltage mode determination operation 30 illustrated in FIG. 11 can only be used for a heating operation or a cooling operation.

Despite the fact that in FIG. 9-11 is not illustrated, a method for controlling an electronic temperature control device according to an embodiment of the present invention may further include the operation of driving a fan 400, on which the fan 400 is rotated, located at the other end of the second metal element 120 at a first speed, when the difference between the temperature of the object or the first metal element 110 and the final temperature is outside the preset range, and rotate the fan 400 for the first speed when the difference between the temperature of the object or the first metal member 110 and the final temperature is within a predetermined range. Here, preferably, the first speed is higher than the second speed.

Next, a method for providing cold water in the case of developing a water purifier supplying cold water using an electronic temperature control device according to an embodiment of the present invention will be described.

The tank for purified water of the water purifier may include a main tank body made of synthetic resin and having an inlet and outlet and a thermoelectric module in which one end of the first metal element 110 is hermetically connected to one open side of the main tank body. The other end of the second metal element 120 of the thermoelectric module 100 protrudes outward, a fan 400 can be attached to it.

When it is considered that the final cold water temperature is adjusted to 5.5 ° C, the first preset value is set to 2 ° C, the first voltage is set to 21 V, the second voltage is set to 8.5 V, and the third voltage is set to 12 V The final temperature of cold water can be set equal to any one value from the temperature range from 0 to 7 ° C. It can also be set to any one value from a temperature range of 0 to 2 ° C. Here, however, preferably, the temperature of the cold water does not exceed 10 ° C.

The temperature of the purified water inside the purified water tank when the cooling operation is started is equal to room temperature. Thus, since it differs from the final temperature, the purified water can be rapidly cooled by applying a first voltage to the thermoelectric module 100. When a certain period of time passes and the temperature of the purified water reaches the final temperature, a second voltage can be applied to the thermoelectric module 100 to maintain cold water temperature.

However, the temperature of cold water can be changed due to various factors, such as outside temperature or the like, and here, when the temperature of cold water drops to 2 ° C, below the final temperature, the voltage supply can be stopped. When the temperature of the cold water varies from 5 to 7 ° C, a third voltage can still be applied.

However, when the cold water temperature reaches 7 ° C, a first voltage as a constant voltage can be applied to cool the cold water.

In addition, the second voltage can be adjusted to lower to 5 V, as needed.

The feedback control can be performed so that the voltage supplied to the thermoelectric module 100 is the final voltage, while the current consumption can be measured, and the feedback control can be performed so that the heat transfer ability of the thermoelectric module 100 is at the final level, as needed.

In addition, the configuration and operation of the voltage supply unit 200 of the electronic temperature control device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 12 is a view schematically illustrating a configuration of a voltage supply unit according to an embodiment of the present invention.

In FIG. 12, the voltage supply unit 200 may include a constant voltage generator 210, an alternating voltage generator 220, and a voltage controller 230. The voltage supply unit 200 may further include any one of the switching unit 240 and the current direction controller 250.

The DC voltage generator 210 may generate a first voltage out1 when receiving power from a voltage source. The first voltage out1 created and supplied by the constant voltage generator 210 has a small number of ripples, while the constant voltage generator 210 can supply high power. Namely, the constant voltage generator 210 is a component for providing high quality constant voltage. The DC voltage generator 210 may be implemented using SMPS, as needed.

The alternating voltage generator 220 may generate an alternating voltage out2 having a range from a second voltage to a third voltage according to a second control signal ctrl2 upon receiving the first voltage out1 generated by the constant voltage generator 210. Namely, the alternating voltage generator 220 can convert the first voltage out1 to any one voltage out2 corresponding to the second control signal ctrl2, and here, the converted voltage out2 can be included within the range from the second voltage to the third voltage. If necessary, the alternating voltage generator 220 may be implemented using a DCDC converter, and the second control signal ctrl2 may be a signal for controlling the voltage conversion coefficient of the DCDC converter. Here, the first voltage may be a higher voltage than the third voltage, and may be a constant voltage. Namely, the voltage supply unit 200 according to an embodiment of the present invention can supply a constant voltage as a high voltage to the thermoelectric module 100 or apply an alternating voltage having a relatively low voltage strip.

If necessary, the output terminals of the alternating voltage generator 210 and the alternating voltage generator 220 can be annularly connected, and the voltage can be supplied from the node in which the two terminals are connected to the thermoelectric module 100. Namely, from the node in which two output terminals are connected, one of the first voltage out1 or an alternating voltage out2 having a range from a second voltage to a third voltage can be output.

A switching unit 240 is located between the output terminal of the constant voltage generator 210 and the node in which the two output terminals are connected, and controls the transmission of the first voltage out1 output from the constant voltage generator 210 to the node in which the two terminals are connected. In particular, when the two output terminals are connected, the first voltage out1 is relatively high, so if the first voltage out1 is transmitted simultaneously with the alternating voltage, only the first voltage out1, higher than the alternating voltage, can be transferred, and therefore it is necessary to control transferring the first voltage out1. In order to control the supply of the first voltage out1, high voltage and high power, the switching unit 240 can be made in the form of a high power transistor or a powerful field effect transistor. This should prevent the switching unit 240 from damage or short circuit due to a high power signal.

A current direction controller 250 may be located between the alternating voltage generator 220 and the assembly in which the two output terminals are connected, and controls the current so that it is generated from the alternating voltage generator 220 only to the assembly in which the two output terminals are connected. Namely, the current direction controller 250 may be configured as an element for forming a unidirectional current path. Examples of an element for forming a unidirectional current path may include diodes, a transistor, and the like, and these elements can be used.

In particular, when the first voltage from the DC voltage generator 210 is transmitted to a node in which two output terminals are connected, the output terminal or the internal circuit of the AC voltage generator 220 needs to be protected from the first voltage out1 as a high voltage. In addition, since the first voltage is a high voltage, an element having characteristics capable of withstanding high voltage and high power can be used as a current direction controller 250.

The voltage controller 230 may generate and output a first control signal ctrl1 for controlling the interruption of the first voltage out1 of the switching unit 240 or may generate and output a second control signal ctrl2 for controlling the voltage generated by the alternating voltage generator 220. If necessary, the voltage controller 230 can control the amplitude of the voltage generated by the alternating voltage generator 220 using the voltage level of the second control signal ctrl2. Also, a second control signal ctrl2 may be provided as a data signal consisting of a plurality of bits to provide information regarding the voltage level generated by the alternating voltage generator 220.

According to the voltage supply unit 200 having the above configuration, a constant voltage as a high voltage and an alternating voltage having a relatively low voltage strip can be selectively provided for the thermoelectric module 100.

FIG. 13 is a timing chart illustrating an operation of a voltage supply unit according to an embodiment of the present invention.

In FIG. 13, the voltage supply unit 200 can control the voltage V0 of the node in which the two output terminals are connected, according to the first control voltage ctrl1 and the second control voltage ctrl2.

A constant voltage out1 is output as the first voltage V1 independently of the first control voltage ctrl1 and the second control voltage ctrl2. The alternating voltage out2 is alternately outputted as one of the second voltage V2 and the third voltage V3 according to the second control signal ctrl2.

Regarding the voltage V0 of the node in which the two output terminals are connected, when the first control signal ctrl1 is supplied, the first voltage V1 can be output from the node, and when the second control signal ctrl2 is supplied instead of the first control signal ctrl1, an alternating voltage can be output from it, having a range from a second voltage V2 to a third voltage V3.

While the present invention has been shown and described in connection with embodiments, it will be clear to those skilled in the art that transformations and changes can be made without departing from the scope and scope of the invention as defined by the appended claims.

Claims (25)

1. An electronic temperature control device comprising:
a thermoelectric module including a first metal element having one end in contact with the object, and a second metal element having one end connected to the other end of the first metal element, the voltage being applied to one end of the first metal element and the other end of the second metal item;
a voltage supply unit supplying a first voltage or an alternating voltage having a range from a second voltage to a third voltage to a thermoelectric module; and
a controller that controls the voltage supplied to the thermoelectric module by the voltage supply unit according to the difference between the temperature of the object or the first metal element and the final temperature, the first voltage being higher than the third voltage and is a fixed voltage. 2. The electronic temperature control device according to claim 1, wherein the difference between the temperature of the object or the first metal element and the final temperature is equal to or greater than the first preset value, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module, and when the difference between the temperature of the object or the first metal element and the final temperature is less than the first preset value, the controller controls the feed unit conjugation for applying an alternating voltage to the thermoelectric module. 3. The electronic temperature control device according to claim 2, in which, when the difference between the temperature of the object or the first metal element and the final temperature is within the preset range, the controller regulates the voltage supplied to the thermoelectric module in proportion to the difference between the final temperature and the temperature of the object or the first metal element. 4. The electronic temperature control device according to claim 1, wherein when the difference between the temperature of the object or the first metal element and the final temperature is equal to or higher than the first preset value, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module until until the temperature of the object or the first metal element reaches the final temperature, and
when the temperature of the object or the first metal element reaches the final temperature, the controller controls the voltage supply unit to supply alternating voltage to the thermoelectric module. 5. The electronic temperature control device according to claim 1, wherein the controller can compare the final temperature with the temperature of the object or the first metal element, and if the temperature peaks have opposite directions, the controller switches the connection state between one end of the first metal element and the other end of the second metal element to change the direction of the potential peaks of one end of the first metal element and the other end of the second metal element. 6. The electronic temperature control device according to claim 1, wherein when the controller further compares the temperature of the second metal element or the external temperature with the final temperature and the voltage supply unit supplies alternating voltage to the thermoelectric module, the controller corrects the magnitude of the applied alternating voltage. 7. The electronic temperature control device according to claim 6, wherein when the difference between the temperature of the object or the first metal element and the final temperature is equal to or greater than the first preset value, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is less than the first preset value, the controller controls the feed unit yazheniya for supplying AC voltage to the thermoelectric module, and when the difference between the temperature of the second metallic element or the outdoor temperature and the final temperature exceeds the second preset value, the controller narrows a preset range. 8. The electronic temperature control device according to claim 1, further comprising a fan located on the other side of the second metal element of the thermoelectric module. 9. The electronic temperature control device according to claim 8, in which, when the difference between the temperature of the object or the first metal element and the final temperature is outside the preset range, the controller rotates the fan at the first speed, and when this difference is between the temperature of the object or the first metal element and the final temperature is within the preset range, the controller rotates the fan at a second speed, and the first speed is higher than the second th speed. 10. The electronic temperature control device according to claim 1, wherein the controller detects the voltage supplied to the thermoelectric module by the voltage supply unit, and controls, with feedback, the voltage supplied to the thermoelectric module by the voltage supply unit. 11. A cooler containing:
a storage unit storing a refrigerated object;
thermoelectric module including a first metal element having one end in contact with the storage unit or located inside the storage unit, and a second metal element having one end connected to the other end of the first metal element and located outside the storage unit, the voltage applied to one end the first metal element and the other end of the second metal element;
a voltage supply unit supplying a first voltage or an alternating voltage having a range from a second voltage to a third voltage to a thermoelectric module; and
a controller that controls the voltage supplied to the thermoelectric module by the voltage supply unit according to the difference between the temperature of the object or the first metal element and the final temperature when the temperature of this object or the first metal element is higher than the final temperature, the first voltage being higher than the third voltage and is a fixed voltage. 12. The cooler according to claim 11, in which, when the temperature of the object or the first metal element has a level equal to or higher than the preset range from the final temperature, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module, and when the temperature of the object or the first the metal element has a level below the predetermined range from the final temperature, the controller controls the voltage supply unit to supply alternating voltage to the thermoelectric tric module. 13. The cooler according to claim 12, wherein when the temperature of the object or the first metal element is below a predetermined range from the final temperature, the controller supplies voltage to the thermoelectric module proportional to the difference between the final temperature and the temperature of the object or first metal element. 14. The cooler according to claim 11, in which, when the temperature of the object or the first metal element has a level equal to or higher than the preset range from the final temperature, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or the first metal element does not reach the final temperature, and
when the temperature of the object or the first metal element reaches the final temperature, the controller controls the voltage supply unit to supply alternating voltage to the thermoelectric module. 15. The cooler according to claim 11, in which, when the temperature of the object or the first metal element is different from the final temperature, the controller controls the voltage supply unit for supplying the first voltage to the thermoelectric module until the temperature of the object or first metal element reaches the final temperature when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element is equal to or lower than the final temperature, control ep controls the voltage supply unit for supplying an AC voltage to the thermoelectric module,
when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the final temperature and below the first preset value, the controller controls the voltage supply unit to supply the third voltage to the thermoelectric module, and when the temperature of the object or the first metal element reaches final temperature, and the temperature of the object or the first metal element exceeds the first pre but the set value, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module. 16. A heater containing:
a storage unit storing a heated object;
thermoelectric module including a first metal element having one end in contact with the storage unit or located inside the storage unit, and a second metal element having one end connected to the other end of the first metal element and located outside the storage unit, the voltage applied to one end the first metal element and the other end of the second metal element;
a voltage supply unit supplying a first voltage or an alternating voltage having a range from a second voltage to a third voltage to a thermoelectric module; and
a controller that controls the voltage supplied to the thermoelectric module by the voltage supply unit according to the difference between the temperature of the object or the first metal element and the final temperature when the temperature of this object or the first metal element is lower than the final temperature,
moreover, the first voltage is higher than the third voltage and is a fixed voltage. 17. The heater according to claim 16, wherein when the temperature of the object or the first metal element is below a predetermined range from the final temperature, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module, and when the temperature of the object or the first metal element has level exceeding the preset range from the final temperature, the controller controls the voltage supply unit to supply alternating voltage to the thermoelectric esky module. 18. The heater according to claim 17, in which, when the temperature of the object or the first metal element has a level exceeding the preset range from the final temperature, the controller supplies voltage to the thermoelectric module proportional to the difference between the final temperature and the temperature of the object or the first metal element. 19. The heater according to claim 16, wherein when the temperature of the object or the first metal element is below a predetermined range from the final temperature, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or the first metal element does not reach the final temperature, and
when the temperature of the object or the first metal element reaches the final temperature, the controller controls the voltage supply unit to supply alternating voltage to the thermoelectric module. 20. The heater according to claim 16, in which, when the temperature of the object or the first metal element is different from the final temperature, the controller controls the voltage supply unit to supply the first voltage to the thermoelectric module until the temperature of the object or first metal element reaches the final temperature when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element is equal to or higher than the final temperature, control ler controls the voltage supply unit for supplying an AC voltage to the thermoelectric module,
when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element is lower than the final temperature and exceeds the first preset value, the controller controls the voltage supply unit to supply the third voltage to the thermoelectric module, and when the temperature of the object or the first metal element reaches final temperature, and the temperature of the object or the first metal element below the first is preset inventive value, the controller controls the voltage supply unit for supplying a first voltage to the thermoelectric module. 21. A method for controlling an electronic temperature control device comprising a thermoelectric module comprising a first metal element having one end in contact with an object and a second metal element having one end connected to the other end of the first metal element, voltage applied to one end of the first a metal element and the other end of the second metal element, the method comprising:
a temperature setting operation at which a previously stored or input temperature is set as the final temperature;
a temperature detecting operation at which the temperature of the object or the first metal element is detected;
an operation of determining a voltage mode, in which the voltage mode is determined by determining which voltage to supply to the thermoelectric module, a first or alternating voltage having a range from a second voltage to a third voltage, using the difference between the temperature of the object or the first metal element and the final temperature; and
a voltage selection operation, at which the amplitude of the alternating voltage is selected using the difference between the temperature of the object or the first metal element and the final temperature, when it was decided to apply alternating voltage to the thermoelectric module, the first voltage being higher than the third voltage and is a fixed voltage. 22. The control method according to p. 21, in which the operation of determining the voltage mode contains:
an operation in the constant voltage mode, in which the first voltage is supplied to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is outside the preset range; and
an operation in the alternating voltage mode, at which an alternating voltage is supplied to the thermoelectric module, when the difference between the temperature of the object or the first metal element and the final temperature is within a predetermined range. 23. The control method according to p. 21, in which the operation of determining the voltage mode contains:
an operation in the constant voltage mode, in which, by means of the voltage supply unit, the first voltage is supplied to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature, when the difference between the temperature of the object or the first metal element and the final temperature is outside the preliminarily set range; and
an operation in the alternating voltage mode, in which, through the voltage supply unit, an alternating voltage is supplied to the thermoelectric module when the temperature of the object or the first metal element reaches the final temperature. 24. The control method according to p. 21, in which the operation of determining the voltage mode when the electronic temperature control device cools the object, contains:
an operation in the first constant voltage mode, in which, by means of the voltage supply unit, the first voltage is supplied to the thermoelectric module until the temperature of the object or the first metal element reaches the final temperature, when the temperature of the object or the first metal element is different from the final temperature; an operation in a first alternating voltage mode, in which an alternating voltage is supplied to the thermoelectric module by the voltage supply unit when the temperature of the object or the first metal element reaches a final temperature and the temperature of the object or first metal element is lower than the final temperature;
an operation in a second alternating voltage mode, in which a third voltage is supplied to the thermoelectric module by means of a voltage supply unit when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the final temperature and below the first preset value; and
an operation in the second constant voltage mode, in which the first voltage is supplied to the thermoelectric module by the voltage supply unit when the temperature of the object or the first metal element reaches the final temperature, and the temperature of the object or the first metal element exceeds the final temperature. 25. The control method according to claim 21, in which the electronic temperature control device further comprises a fan located on the other side of the second metal element of the thermoelectric module, and the control method of the electronic temperature control device further comprises a fan driving operation on which the fan is rotated on the first speed, when the difference between the temperature of the object or the first metal element and the final temperature is outside, precede no set range, and the fan is rotated at a second speed when the difference between the temperature of the object or the first metal member and the final temperature is within a predetermined range, the first speed higher than the second speed.

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