CN113384083A

CN113384083A - Indoor cooling file cabinet based on Peltier principle

Info

Publication number: CN113384083A
Application number: CN202110628813.5A
Authority: CN
Inventors: 姜风; 梁宁; 韩衍臣; 赵娜
Original assignee: Yantai Engineering and Technology College
Current assignee: Yantai Engineering and Technology College
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-09-14

Abstract

The utility model provides an indoor cooling filing cabinet based on peltier principle, the filing cabinet includes that the layer is accomodate to the multirow, it all is equipped with the interlayer that adjusts the temperature to accomodate between each layer in layer, be equipped with attemperator in the interlayer that adjusts the temperature, attemperator includes: a first Peltier element layer, a second Peltier element layer, a central conduction layer, and two side conduction layers; the file cabinet is further provided with a blowing device, the blowing device comprises a cabinet internal blowing device and a cabinet external blowing device, the cabinet internal blowing device is arranged in the storage layer, and the cabinet external blowing device is arranged on the rear side of the central conducting layer. Combine blast apparatus to realize nimble temperature to indoor and cabinet and regulate and control, can cool off or heat up indoor according to the temperature demand, also can be according to the demand to the shelves damp-proofing of heating up in the cabinet.

Description

Indoor cooling file cabinet based on Peltier principle

Technical Field

The invention relates to a cooling device based on the Peltier principle, in particular to an indoor cooling file cabinet based on the Peltier principle for a file room.

Background

The archives room in present stage is the administrative or technical offices that the people is rare, and few personnel flow when nobody looks up archives, so each big enterprise unit in present stage is equipped with the cooling device for the archives indoor that the cost-effective can not be, and the environment of archives room is very hot very and is unfavorable for looking for archives when inquiring archives in summer. And the simple refrigerating device has high cost and noise, and is not convenient to popularize in a file room.

The file room in the present stage still all is paper archives mostly, and it is relatively poor to ventilate because of the personnel that have throughout the year flows in the file room, leads to indoor humidity very easily, makes the archives in the filing cabinet wet.

How to manufacture a device which has low cost, can cool down a file room with the least cost and can also take moisture-proof property into consideration in a file cabinet is a problem to be solved at the present stage.

Disclosure of Invention

The invention provides a cooling device for an archive office, which is characterized in that: an indoor cooling file cabinet based on the Peltier principle comprises a plurality of rows of storage layers,

accomodate all to be equipped with the temperature adjustment interlayer between each layer in layer, be equipped with attemperator in the temperature adjustment interlayer, attemperator includes: the first Peltier element layer, the second Peltier element layer and the central conducting layer are used for conducting central conducting fluid and two side conducting layers are used for conducting two side conducting fluids;

wherein the first peltier element layer, the second peltier element layer, the center conducting layer, the two side conducting layers are arranged in a stack such that the center conducting layer and the two side conducting layers are arranged between the first peltier element layer and the second peltier element layer, and wherein a current conducted through the stack adjusts the temperature of the center conducting layer and the two side conducting layers by the peltier effect;

the file cabinet is further provided with a blowing device, the blowing device comprises a cabinet internal blowing device and a cabinet external blowing device, the cabinet internal blowing device is arranged in the storage layer, and the cabinet external blowing device is arranged on the rear side of the central conducting layer.

Further, the filing cabinet is the heat preservation material, the filing cabinet front end is for accomodating the temperature regulation district, and the rear end is the air inlet district, and the side is the distribution area.

Further, accomodate the district of adjusting temperature include accomodate the layer with the interlayer adjusts the temperature, accomodate the layer with all be equipped with a plurality of check bodies in the interlayer adjusts the temperature.

Further, accomodate the inboard top of check and be equipped with blast apparatus in the cabinet, accomodate the check outside and be equipped with sealing door, the sealing door outside is equipped with the handle, be equipped with categorised tablet on the handle, be equipped with the response lamp on the categorised tablet.

Furthermore, both ends are sealed around the temperature regulation check, both sides are equipped with the hole of airing exhaust on central conducting layer corresponding position around the temperature regulation check.

Furthermore, the air inlet area is arranged at the rear end of the file cabinet, an article shelf is arranged on the rear side of each temperature adjusting interlayer of the air inlet area, a plurality of cabinet external blowing machines are placed on the article shelf, and the blowing machines are attached to the air exhaust holes; the air inlet district with the top all is equipped with the opening between the check of accomodating.

Furthermore, a plurality of air inlets are formed in the rear side of the air inlet area.

Furthermore, a current regulation and control device is arranged in the power distribution area, one end of the current regulation and control device is connected with a main power supply, the other end of the current regulation and control device is respectively connected with the two side conducting layers and the blowing device, a direct current converter is arranged on the connecting end of the two side conducting layers of the current control device, alternating current of the main power supply is converted into direct current, and the direct current converter can also adjust the current direction.

Furthermore, the two side conducting layers are provided with electric contacts, wherein the upper conducting layer is provided with a first electric contact, the lower conducting layer is provided with a second electric contact, the current regulation and control device is connected with the first layer of first electric contact, the first layer of second electric contact is connected with the second layer of first electric contact in an analogical manner until the second electric contact at the top layer is connected with the current regulation and control device to form a current loop.

Furthermore, a net-shaped ventilation channel is arranged inside the central conducting layer.

The first peltier element layer and the second peltier element layer may be composed of two differently doped semiconductor materials. Thus, for example, the first peltier element layer is n-doped and the second peltier element layer is p-doped, or vice versa, the first peltier element layer is p-doped and the second peltier element layer is n-doped. Other suitable conductors may be used for the peltier element layer instead of the semiconductor material. The center and both side conductive layers may be made of a metal having good conductivity. The current flowing through the temperature control element can enter the temperature control element at one end of the stack, penetrate the stack and leave the stack again at the opposite end, for example via a suitable contact which is connected to a conducting layer. The central conductive layer may be traversed by a fluid. The central and the two side conducting layers can be arranged in the stack with respect to the first and the second peltier element layers in such a way that the temperature generated by the peltier effect can be transferred to the likewise conducting fluid. According to the Peltier effect and the arrangement of the conductive layers with respect to the Peltier element layers, one of the heat-conducting fluids is always heated and the other is cooled when the temperature control element is driven. In the case of a heat-conducting fluid, which may be, for example, a gas, the task to be fulfilled by the temperature control element, the central conducting layer is blown by a blower for conducting the heat into the archive chamber in order to cool the temperature in the chamber. The conducting layers on the two sides heat the upper and lower layers of the filing cabinet. Increase the filing cabinet temperature and reach dampproofing effect.

The two conductive layer upper layers may have a first electrical contact and the two conductive layer lower layers have a second electrical contact. Here, the first peltier element layer and the second peltier element layer may be disposed between the conductive layers on the second side. The central conductive layer may be disposed between the first peltier element layer and the second peltier element layer. According to this layout, a first peltier effect can be achieved on the central conducting layer, which can therefore be heated or cooled according to the polarity of the current directed through the stack. According to another peltier effect, opposite to the first peltier effect, the conducting layers on both sides can be heated if the central conducting layer is cooled; if the center conductive layer is heated, the conductive layers on both sides can be cooled. The advantage of this arrangement is that no heat-insulating layer is required between the individual layers, and the heat-conducting layers with different temperature control are always separated by the peltier element layer. In addition, when the temperature control element is stacked on another identical temperature control element, only galvanic separation between the temperature control elements is required, but no thermo-galvanic separation is required, since the two heat-conducting layers, which are arranged adjacent to one another, are subjected to the same peltier effect and therefore have the same temperature.

The central conducting layer can be designed as a rib element, the two side conducting layers as media channels, which rib element can be designed, for example, as two webs, between which a zigzag or corrugated metal sheet is arranged, so that, for example, only obliquely arranged ribs are formed at the webs. The central conducting layer fluid may be, for example, air, which is conducted from the surroundings of the filing cabinet into the filing cabinet and through the central conducting layer, where the air is cooled according to the temperature of the central conducting layer. Advantageously, this configuration of the central conducting layer provides a large temperature transition surface for the fluid guided through the central conducting layer,

an insulating layer, i.e., a receiving layer, for current is provided between each two of the plurality of temperature control elements. In this way, it is ensured that the current flows through all temperature control elements of the temperature control device in sequence. The contacts of the first and last thermostat with respect to the current can be connected to a power supply. Furthermore, the galvanic insulation layer provided between adjacent temperature control elements can provide thermal insulation between the individual temperature control elements. This is particularly important if two heat-conducting layers with different temperature control are arranged next to one another in the temperature control device. These temperature control elements can be connected in series, in parallel or in a mixed manner in the temperature control device.

The invention also relates to a tempering device for an archive office, having the following features: a central conductive layer for conducting a fluid; a peltier element layer having a plurality of peltier elements which are disposed adjacent to each other and respectively have a plurality of peltier element conductors; and two side conductive layers; wherein the layers are arranged in a stack, so that the peltier element layers are arranged between the central conducting layer and the two side conducting layers. The peltier element layers may be configured to cool the center conductive layer and heat both side conductive layers, or vice versa, when the thermostat is in operation. Each peltier element can be designed as a separate peltier module. This means that each peltier element has its own electrical interface for inputting and outputting the current flowing through the peltier element conductors of the peltier element. The peltier elements may each have a base plate on which only the peltier element conductors of the respective peltier element are arranged. The pitch between adjacent peltier element conductors inside a peltier element is smaller than the pitch between adjacent peltier elements. The peltier elements may have both n-doped and p-doped peltier element conductors, respectively. The peltier element conductors can also be designed as an infiltrated conductor circuit or as a fabric.

The plurality of peltier elements of the peltier element layer may cover at most one tenth of the entire surface of the peltier element layer. A thermally insulated intermediate cavity may be located between the peltier elements. Alternatively, the plurality of peltier element conductors may cover one tenth of the entire surface of the peltier element layer.

The temperature control device has a switching device which is designed such that the first heat-conducting fluid is conducted through the central conducting layer and the further central conducting layer in a first operating mode of the temperature control device and is conducted either through the central conducting layer or through the further central conducting layer in a second operating mode of the temperature control device. The thermostat can achieve a greater thermal power in the first operating mode than in the second operating mode. Advantageously, the active peltier element conductor can be traversed by a current both in the first operating mode and in the second operating mode, this current having an optimum current intensity for driving the peltier element conductor.

Adjacent peltier element layers (for example, a first peltier element layer and a second peltier element layer) have different numbers of peltier element conductors or peltier elements. Alternatively or additionally, the peltier element conductors or the placement of the peltier elements on adjacently arranged peltier element layers may be different. Alternatively or additionally, the peltier element conductors or the planar extension of the peltier elements on adjacently arranged peltier element layers may be different. By selecting the layout, number and/or size accordingly, the temperature distribution inside the peltier element layer can be influenced. In particular, a uniform temperature distribution can be achieved.

The invention is based on the idea that a heating or cooling body of layered design can be realized by suitably connecting peltier elements in series, so that the same doped peltier elements are respectively arranged adjacently in one layer.

The method according to the invention describes a cooling device with the function of heating the filing cabinet and cooling the temperature inside the filing cabinet, which cooling device can be produced as cost-effectively as possible with as few expenditure and manufacturing processes as are already available and which furthermore has a high efficiency by optimizing the heat transfer.

The invention provides an inventive cooling device, wherein the net-shaped ventilation ducts provide through-connections which are simple to produce and through-channels for cooling air, which are each designed as an electrical conductor. Since the peltier elements are thermally bonded as directly as possible to the cabinet interior and/or cabinet exterior ventilation side, a higher heat transfer can be achieved, in particular due to the absence of an electrical insulator as a heat insulator in this region. Advantageously, this combination of series and parallel can be adjusted to 12V. A further advantage of this configuration is that the possible thermal insulation effect of the galvanic separation is not problematic, since here no temperature gradients exist due to the symmetry requirements. Overall, it is an important advantage that the deviations from the cooling device already produced according to the existing production method are as small as possible while maintaining an optimum temperature transfer. Thus, the best efficiency or COP (coefficient of performance) is obtained.

Advantageously, heating with COP >1 can be performed without combustion waste heat and the cooling and heating functions can be unified in one configuration. Furthermore, due to the repetition of the layers and the surface texture inside the layers, the cooling medium can be omitted and a simple dispersion can be created by the variation.

Utilize this theory to combine blast apparatus to realize nimble temperature to indoor and cabinet and regulate and control, can cool off or heat up indoor according to the temperature demand, also can heat up dampproofingly according to the demand to shelves in the cabinet.

Drawings

Advantageous embodiments of the invention will be described in detail below with reference to the accompanying drawings, in which:

FIG. 1 shows a schematic view of a cooling device according to an embodiment of the invention;

FIG. 2 shows a file cabinet structure according to the invention;

FIG. 3 shows another perspective view of a filing cabinet according to the present invention;

FIG. 4 shows a sectional view of the front side of a file cabinet according to the invention;

fig. 5 shows a sectional view of the rear side of a file cabinet according to the invention.

Reference numerals

A first Peltier element layer (1), a second Peltier element layer (2), a central conducting layer (3), two side conducting layers (4), an in-cabinet blowing device (5), an out-cabinet blowing device (6), a storage temperature adjusting area (7) and an air inlet area (8),

distribution area (9), sealing door (10), handle (11), exhaust hole (12), supporter (13), opening (14), air intake (15), electric current regulation and control device (16), first electric contact (17), second electric contact (18).

Detailed Description

The following detailed description of the present invention will be made in conjunction with the accompanying drawings, but the following examples are merely illustrative of preferred embodiments, which are provided to assist understanding of the present invention, and are not to be construed as limiting the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout.

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

The utility model provides an indoor cooling filing cabinet based on peltier principle, the filing cabinet includes that the layer is accomodate to the multirow, it all is equipped with the interlayer that adjusts the temperature to accomodate between each layer in layer, be equipped with attemperator in the interlayer that adjusts the temperature, attemperator includes: a first Peltier element layer 1, a second Peltier element layer 2, a central conduction layer 3 for conducting a central conduction fluid and two side conduction layers 4 for conducting two side conduction fluids;

wherein the first peltier element layer 1, the second peltier element layer 2, the central conduction layer 3, the two side conduction layers 4 are arranged in a stack such that the central conduction layer 3 and the two side conduction layers 4 are arranged between the first peltier element layer 1 and the second peltier element layer 2, and wherein the current conducted through the stack regulates the temperature of the central conduction layer 3 and the two side conduction layers 4 by the peltier effect;

the file cabinet is further provided with a blowing device, the blowing device comprises a cabinet internal blowing device 5 and a cabinet external blowing device 6, the cabinet internal blowing device 5 is arranged in the storage layer, and the cabinet external blowing device 6 is arranged on the rear side of the central conducting layer 3.

The filing cabinet is the heat preservation material, ensures that the temperature can not pass, the filing cabinet front end is for accomodating temperature regulation district 7, and the rear end is intake area 8, and the side is distribution area 9.

Accomodate temperature adjusting zone 7 include accomodate the layer with the interlayer adjusts the temperature, accomodate the layer with all be equipped with a plurality of check bodies in the interlayer adjusts the temperature, accomodate the inboard top of check and be equipped with blast apparatus 5 in the cabinet, accomodate the outer side of check and be equipped with sealing door 10, the sealing door 10 outside is equipped with handle 11, be equipped with categorised tablet on the handle 11, be equipped with the response lamp on the categorised tablet. The response lamp with current regulation and control device 16 is connected, the response lamp is the acoustic control response lamp, makes things convenient for the environment dim time convenient for see clearly the categorised tablet of archives under energy-conserving prerequisite.

The front end and the rear end of the temperature adjusting grid are sealed, and the air exhaust holes 12 are formed in the corresponding positions of the central conducting layer 3 on the front side and the rear side of the temperature adjusting grid, so that the temperature of the central conducting layer can be accurately adjusted and controlled to the outside when air blowing is carried out.

The air inlet district 8 is located the filing cabinet rear end, the air inlet district 8 is every layer the interlayer rear side that adjusts the temperature all is equipped with supporter 13, put a plurality of cabinets on supporter 13 and blow out device 6 outward, blow out device 6 outward and paste in make wind get into in central conducting layer 3 from the hole 12 of airing exhaust of rear end and realize temperature control again and blow out from front end hole 12 of airing exhaust on the hole 12 of airing exhaust, the air inlet district 8 with it all is equipped with opening 14 to accomodate the top between the check, air inlet district 8 rear side is equipped with a plurality of air intakes 15, opening 14 and air intake 15 stabilize the interior blast apparatus 5 of cabinet and the interior atmospheric pressure of cabinet when blowing device 6 starts outward.

The power distribution area 9 is internally provided with a current regulation and control device 16, one end of the current regulation and control device 16 is connected with a main power supply, and the other end of the current regulation and control device 16 is respectively connected with the two side conducting layers 4 and the blowing device, the current control device 16 is provided with a direct current converter on the connecting end of the two side conducting layers 4, the direct current converter converts alternating current of the main power supply into direct current, and the direct current converter can also adjust the current direction.

And a reticular ventilation channel is arranged in the central conducting layer 3.

Example 2

In the following description of the preferred embodiments of the present invention, the same or similar reference numerals are used for elements shown in different drawings, which have similar functions, and repeated description of the elements is omitted.

Fig. 1 shows a principle view of a temperature adjusting apparatus according to an embodiment of the present invention.

The temperature control device is formed here by a stack of four temperature control elements. For the sake of clarity, only one of the temperature control elements is provided with a reference numeral. The temperature control device can also have more or fewer temperature control elements.

In fig. 1, each of the temperature control elements has a first peltier element layer, a second peltier element layer, a central conducting layer, a two-sided conducting layer upper layer and a two-sided conducting layer lower layer. According to the view of fig. 1, the lower layers of the conducting layers on both sides constitute the base of the stack. On which a first peltier-element layer is arranged, on which a central conducting layer is arranged in turn. The central conductive layer is in turn covered by a second peltier element layer, on which finally a two-sided conductive layer upper layer is provided. In the view of fig. 1, the first peltier element layer and the second peltier element layer are each formed by three individual, spaced-apart groups of adjacent peltier element conductors. For the sake of clarity, only one of the peltier element conductors is marked with a reference numeral. According to the illustration of fig. 1, the peltier element conductors of the first peltier element layer are n-doped and the peltier element conductors of the second peltier element layer are p-doped.

In the exemplary embodiment of the temperature control device according to fig. 1, the central conducting layer is in each case designed as a rib-like element having two parallel-arranged webs and having ribs arranged obliquely between the webs. The two side conduction layers and the other two side conduction layers are respectively designed as cooling medium channels. And a receiving layer is arranged between every two adjacent temperature regulating elements.

According to the embodiment of the temperature-regulating device shown in fig. 1, the upper layers of the two side conducting layers each have a first electrical contact and the lower layers of the two side conducting layers each have a second electrical contact. In order to establish an electrical series connection between the temperature control elements, the second electrical contacts of the temperature control elements are each connected to the first electrical contacts of the adjacent temperature control elements by an electrical line. According to the illustration in fig. 1, the first electrical contact of the lowermost temperature control element and the second electrical contact of the uppermost temperature control element in the temperature control device are connected to electrical input leads or output leads, so that an electrical current entering the temperature control device via the input leads can flow through the entire stack and leave the stack again via the output leads.

According to the illustration in fig. 1, each heating body or each temperature control element comprises a coolant channel and an air passage. By means of the peltier element, heat is transferred between the cooling medium and the peltier element and between the peltier element and the air side to which the ribs are added. By means of an advantageous electrical interconnection, a simple construction principle to be formed can be achieved. Furthermore, electrically non-insulated heating bodies have also appeared, which generally have a negative effect on the heat-conducting properties in areas where high heat transfer is required.

The medium channel is traversed by the medium. On both sides of which peltier elements are connected, so that heat transfer can take place in both directions. The heat is transferred through the peltier element and to the air side where ribs are added, which ribs make the temperature easier to transfer to the air.

The peltier elements in fig. 1 are designed to be doped only p-type or n-type in one row (layer). The electrical interconnection is made by enlarging the temperature control device in the vertical direction by increasing the number of layers of temperature control elements, which increases the overall voltage drop across the temperature control device. In the exemplary embodiment shown in fig. 1, the temperature control device comprises three temperature control elements, each of which has the same internal structure. In contrast, a horizontal extension of the temperature control device increases the current intensity, since all elements in one layer are electrically connected in parallel.

In general, for the embodiment of the temperature control device shown in fig. 1, the current can also be described as follows: the current flows through a row of peltier elements doped identically and connected in parallel to the central conducting layer (here ribs or a base plate to which the ribs are added, for example by soldering), and through them to a row of elements doped the other kind, also connected in series. Through the two-sided conducting layers there is an electrical connection towards a separate (possibly arbitrarily designed) conductor which causes a current to flow on the two-sided conducting layers of the other layer. The doping is respectively alternated in electrically series-adjacent elements.

Example 3

In summer, the current direction and the current quantity are controlled by the control current regulation and control device to enter the temperature regulation device, the first Peltier element layer and the second Peltier element layer are electrified to lead to the temperature rise of the conducting layers at the two sides of the central conducting layer for cooling, the air blowing device outside the cabinet is started according to requirements, and the fan blows air into the central conducting layer from the air inlet area for cooling and then discharges air from the front air exhaust hole for cooling the indoor temperature. Also can start blast apparatus in the cabinet in more period in rainy season in summer, because steam upwards walks, so start the even from the top of the temperature that blast apparatus will come from both sides conducting layer intensification in the cabinet at top and blow to the archives box, wind discharges from the opening and gets into the air inlet district and discharge from the air intake again, realizes clearing damp to the archives box.

In winter, the current direction and the current quantity are controlled by the control current regulation and control device to enter the temperature regulation device, the first Peltier element layer and the second Peltier element layer are electrified to cause the central conduction layer to be heated and the conduction layers on the two sides to be cooled, the air blowing device outside the cabinet is started according to requirements, the fan enters air from the air inlet area and blows into the central conduction layer to be heated, then the air is discharged from the air outlet in the front, and the indoor temperature is heated to achieve indoor temperature rising.

And be equipped with the response lamp on the cabinet door and can make the user can be clear under dim environment see the archives sign clearly.

In cooling device in-service use, can possess 15 ℃'s scavenge air cooling temperature, 35 ℃'s filing cabinet heating temperature, realize heating and removing damp for the filing cabinet when cooling down for the filing room to only need micro constant current can reach this effect. Low cost and good effect.

Embodiments of the present invention, it should be understood that the above-described embodiments are illustrative and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above-described embodiments without departing from the principle and spirit of the present invention, and that all such changes in combination are intended to be within the scope of the present invention.

Claims

1. An indoor cooling file cabinet based on the Peltier principle, which comprises a plurality of rows of storage layers, is characterized in that,

accomodate all to be equipped with the temperature adjustment interlayer between each layer in layer, be equipped with attemperator in the temperature adjustment interlayer, attemperator includes: a first Peltier element layer (1), a second Peltier element layer (2), a central conduction layer (3) for conducting a central conduction fluid and two side conduction layers (4) for conducting two side conduction fluids;

wherein the first peltier element layer (1), the second peltier element layer (2), the central conducting layer (3), the two side conducting layers (4) are arranged in a stack such that the central conducting layer (3) and the two side conducting layers (4) are arranged between the first peltier element layer (1) and the second peltier element layer (2), and wherein an electric current conducted through the stack regulates the temperature of the central conducting layer (3) and the two side conducting layers (4) by means of the peltier effect;

the file cabinet is further provided with a blowing device, the blowing device comprises a cabinet internal blowing device (5) and a cabinet external blowing device (6), the cabinet internal blowing device (5) is arranged in the storage layer, and the cabinet external blowing device (6) is arranged on the rear side of the central conducting layer (3).

2. An indoor cooling file cabinet based on the peltier principle as claimed in claim 1, wherein the file cabinet is made of heat preservation material, the front end of the file cabinet is a storage temperature adjusting area (7), the rear end of the file cabinet is an air inlet area (8), and the side end of the file cabinet is a power distribution area (9).

3. An indoor cooling filing cabinet based on peltier principle according to claim 2, characterized in that, the housing temperature-adjusting area (7) comprises the housing layer and the temperature-adjusting partition layer, and a plurality of cells are provided in both the housing layer and the temperature-adjusting partition layer.

4. An indoor cooling file cabinet based on the Peltier principle as claimed in claim 3, wherein the top end of the inner side of the containing grid is provided with an in-cabinet air blowing device (5), the outer side of the containing grid is provided with a sealing door (10), the outer side of the sealing door (10) is provided with a handle (11), the handle (11) is provided with a classification board, and the classification board is provided with an induction lamp.

5. An indoor cooling file cabinet based on Peltier principle as claimed in claim 3, wherein the front and rear ends of the temperature adjusting grid are sealed, and the front and rear sides of the temperature adjusting grid are provided with air exhaust holes (12) at corresponding positions on the central conducting layer (3).

6. The peltier principle based indoor cooling file cabinet according to claims 2, 3 and 5, wherein the air intake area (8) is arranged at the rear end of the file cabinet, the air intake area (8) is provided with a shelf (13) at the rear side of each temperature adjusting interlayer, a plurality of outdoor cabinet blowing devices (6) are arranged on the shelf (13), and the outdoor cabinet blowing devices (6) are attached to the air exhaust holes (12); air inlet district (8) with top all is equipped with through hole (14) between the check of accomodating.

7. An indoor cooling filing cabinet based on peltier principle according to claim 2, characterized in that the air intake area (8) is provided with a plurality of air intakes (15) at the rear side.

8. The peltier principle based indoor cooling filing cabinet of claim 2, wherein a current regulation device (16) is installed in the power distribution area (9), one end of the current regulation device (16) is connected to a main power supply, and the other end is connected to the two side conducting layers (4) and the blowing device, respectively, the current control device (16) is provided with a dc converter on the connecting ends of the two side conducting layers (4) to convert ac of the main power supply into dc, and the dc converter can also regulate the current direction.

9. An indoor cooling filing cabinet based on peltier principle according to claim 8, characterized in that both conducting layers (4) on the two sides are provided with electrical contacts, wherein the upper conducting layer is provided with a first electrical contact (17) and the lower conducting layer is provided with a second electrical contact (18), the current regulating device (16) is connected with the first layer first electrical contact (17), the first layer second electrical contact (18) is connected with the second layer first electrical contact (17) and so on until the top layer second electrical contact (18) is connected with the current regulating device (16) to form a current loop.

10. An indoor cooling filing cabinet based on the peltier principle according to claim 1, characterized in that the central conducting layer (3) is internally provided with ribbed ventilation ducts.