Steel thermal insulation door

Abstract

The utility model discloses a steel thermal insulation door, which relates to the technical field of steel thermal insulation doors and comprises a door frame and a door leaf, two hinges are fixedly mounted on one side of the door leaf through bolts, the door leaf is hinged with the door frame through the hinges, a steel plate layer with moderate thickness is arranged on the outer side of the door leaf, a thermal insulation layer is arranged in the steel plate layer, and the thermal insulation layer is arranged on the outer side of the door leaf. The heat preservation layer is made of polyurethane foam, and an electric heating wire is embedded in the surface of the polyurethane foam. The heating wire is embedded in the surface of the polyurethane foam heat preservation layer, an active heat preservation system is constructed, when the environment temperature outside a refrigeration house is extremely low, the heating wire is powered on and emits heat to supplement heat for the door plate, the transfer rate of the heat from the interior of the refrigeration house to the exterior of the refrigeration house is effectively reduced, and the heat preservation effect is greatly enhanced. The operation frequency of a refrigeration house refrigerating system can be obviously reduced, a large amount of electric energy is saved, the operation cost is reduced, a stable and appropriate low-temperature environment is always kept in the refrigeration house, and the refreshing time of food and medicine is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel thermal insulation door, specifically a steel thermal insulation door. BACKGROUND

[0002] With the development of cold storage and low temperature storage technology, the steel thermal insulation door as the main component of the cold storage and other temperature control environment plays a vital role, the steel thermal insulation door can effectively prevent the temperature of external environment from influencing the internal temperature control system, thereby ensuring the temperature stability in the cold storage, however, the traditional steel thermal insulation door simply relies on thermal insulation materials, such as common polyurethane foam, in the extremely cold weather or long time use process, heat still gradually dissipates, it is difficult to maintain the stable low temperature environment in the warehouse, resulting in the frequent start of the refrigeration system, the energy consumption increases greatly, the operating cost is high, on the other hand, the temperature difference between the inside and outside of the cold storage is large, in the low temperature and high humidity environment, the steel door surface is prone to condensation, frosting and even icing, which not only affects the normal opening and closing of the door and shortens the service life of the door, but also may cause water droplets to penetrate into the thermal insulation layer, reduce the thermal insulation effect, and even breed bacteria and mold, which seriously threatens the quality and safety of the food and medicine stored in the cold storage.

[0003] Therefore, the person skilled in the art provides a steel thermal insulation door to solve the problems raised in the background. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a steel thermal insulation door to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A steel thermal insulation door, comprising a door frame and a door leaf, two hinges are fixedly installed on one side of the door leaf through bolts, the door leaf is hinged with the door frame through the hinges, a steel plate layer with appropriate thickness is arranged on the outer side of the door leaf, a thermal insulation layer is arranged in the steel plate layer, the thermal insulation layer adopts polyurethane foam, and an electric heating wire is embedded on the surface of the polyurethane foam.

[0007] As a further scheme of the utility model: a controller and a temperature sensor are embedded in the door leaf, a control panel is fixedly installed on the side of the door leaf away from the hinge, the control panel and the temperature sensor are electrically connected, and the electric heating wire and the controller are electrically connected.

[0008] As a further scheme of the utility model: a horizontal wire channel is formed in the upper part of the door frame, a vertical wire channel is formed in the upper part of the side of the door frame close to the hinge, and the vertical wire channel and the horizontal wire channel are communicated.

[0009] As a further scheme of the utility model: the door frame is close to the inside end face of hinge and is provided with a wiring hole one, the wiring hole one is communicated with the vertical wiring groove.

[0010] As a further scheme of the utility model: the door leaf is close to the side end face of hinge and is provided with a wiring hole two at the position close to the upper side, the wiring hole two corresponds to the position of the wiring hole one.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1, the utility model discloses a polyurethane foam insulation layer surface inserts electric heating wire, constructs the initiative heat preservation system, when the cold storage environment temperature is extremely low, the electric heating wire power heating, supplements the heat of the door board, effectively slows down the transfer rate of heat from the inside of the warehouse to the outside, greatly enhances the heat preservation effect, compared with the traditional steel heat preservation door, can significantly reduce the operation frequency of the cold storage refrigeration system, saves a lot of electric energy, reduces the operation cost, ensures that the cold storage always maintains stable and suitable low temperature environment, prolongs the fresh-keeping period of food, medicine,

[0013] 2, the heating function of electric heating wire can make the surface temperature of door leaf maintain above dew point temperature, completely eliminates the condensation, frosting and icing of cold storage door in the using process, not only guarantees the smooth opening and closing of the door, reduces the physical damage caused by ice and frost accumulation to the door body, also avoids the moisture penetration into the insulation layer, maintains the heat insulation performance of the insulation material, ensures the sanitary environment of the cold storage, provides solid protection for the storage quality of food and medicine,

[0014] 3, the temperature sensor embedded in the door leaf cooperates with the control panel and the controller, realizes the intelligent accurate monitoring and adjustment of the temperature of the steel heat preservation door, the temperature sensor collects the door plate temperature data in real time, and transmits the information to the controller, and the controller automatically controls the power on, power off and power adjustment of the electric heating wire according to the preset temperature threshold, this intelligent temperature control mode can flexibly adjust the heating state of the heat preservation door according to the dynamic change of the environment inside and outside the cold storage, which not only ensures the heat preservation effect, but also avoids energy waste, meets the needs of modern cold storage high efficiency, energy saving and fine management,

[0015] 4, the horizontal wiring groove, the vertical wiring groove designed on the upper side of the door frame and the corresponding wiring holes on the door frame and the door leaf cooperate with the use of flexible cable, and provide a scientific and reasonable wiring scheme for the power line, in the opening and closing process of the heat preservation door, the flexible cable can freely bend and stretch with the action of the door, effectively avoiding the risk of cable being pulled, worn and even broken, ensuring the stable operation of the electrical circuit, improving the use safety and reliability of the steel heat preservation door, and reducing the maintenance cost and downtime caused by line fault. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a steel thermal insulation door.

[0017] Figure 2 It is a schematic diagram of the structure of a door frame in a steel thermal insulation door.

[0018] Figure 3 It is a schematic diagram of the structure of a door leaf in a steel thermal insulation door.

[0019] Figure 4 It is a main partial sectional view of a steel thermal insulation door.

[0020] In the figure: 1, door frame; 2, door leaf; 3, control panel; 4, hinge; 5, horizontal wiring groove; 6, vertical wiring groove; 7, wiring hole one; 8, steel plate layer; 9, polyurethane foam; 10, heating wire; 11, wiring hole two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0022] Reference Figures 1-4 The embodiment provides a steel thermal insulation door, which comprises a door frame 1 and a door leaf 2. The door frame 1 is made of high-quality steel material and has good strength and stability, so as to provide firm support for the door. Reinforcing ribs are arranged inside the door frame 1 to enhance the deformation resistance of the door frame 1.

[0023] Two hinges 4 are fixedly installed on one side of the door leaf 2 through bolts. The door leaf 2 is hinged to the door frame 1 through the hinges 4. A steel plate layer 8 with appropriate thickness is arranged on the outer side of the door leaf 2. A thermal insulation layer is arranged in the steel plate layer 8. The thermal insulation layer is made of polyurethane foam 9, and the surface of the polyurethane foam 9 is embedded with a heating wire 10.

[0024] The outer surface of the steel plate layer 8 is subjected to corrosion prevention treatment, such as galvanizing and spraying, so as to improve the corrosion resistance and aesthetic appearance of the door. The polyurethane foam 9 is a commonly used thermal insulation material for cold storage door. It has the characteristics of good heat insulation performance and moderate density, and has a certain plasticity, so as to facilitate the embedding and fixing of the heating wire 10. It can withstand certain temperature changes and has a low thermal conductivity. It can effectively maintain the temperature in the cold storage and ensure that the heating wire 10 does not produce excessive heat loss. Embodiment 2

[0025] ReferenceFigures 1-4 The embodiment is based on the previous embodiment, and is different from the previous embodiment in that the door leaf 2 is embedded with a controller and a temperature sensor, the controller controls the closed state of the heat preservation door, a control panel 3 is fixedly installed on the surface of the door leaf 2 away from the hinge 4, the control panel 3 is electrically connected with the temperature sensor, the electric heating wire 10 is electrically connected with the controller, a horizontal wire slot 5 is formed in the upper portion of the door frame 1, a vertical wire slot 6 is formed in the upper portion of the side of the door frame 1 close to the hinge 4, the vertical wire slot 6 communicates with the horizontal wire slot 5, a wire hole one 7 is formed in the inner side end face of the door frame 1 close to the hinge 4, the wire hole one 7 communicates with the vertical wire slot 6, and a wire hole two 11 is formed in the side end face of the door leaf 2 close to the hinge 4 and close to the upper portion;

[0026] It should be noted that the wire of the power line is considered the opening and closing of the door, and the cable is ensured not to be pulled or damaged due to the opening and closing of the door. The utility model adopts a soft cable, which can bend and stretch with the opening and closing of the door, is not easy to be pulled off, and is sequentially wired through the horizontal wire slot 5, the vertical wire slot 6, the wire hole one 7 and the wire hole two 11, so as to be connected with the controller in the door leaf 2.

[0027] Working principle: firstly, the temperature sensor senses the temperature of the door leaf 2 in real time, and transmits the temperature signal to the control panel 3 electrically connected therewith; the control panel 3 analyzes and processes the received data, and then transmits the information to the controller; when the ambient temperature outside the cold storage is low, so that the temperature of the door leaf 2 approaches or is lower than the preset lower limit temperature value, the controller receives the signal, and automatically starts the electric heating wire 10; the current passes through the soft cable, and sequentially passes through the horizontal wire slot 5, the vertical wire slot 6, the wire hole one 7 of the door frame 1 and the wire hole two 11 of the door leaf 2, so as to supply power for the electric heating wire 10 embedded on the surface of the polyurethane foam 9; the electric heating wire 10 generates heat after being powered on, and the heat is rapidly transmitted to the entire door plate through heat conduction, so that the temperature of the door leaf 2 is increased; on the one hand, the increased temperature of the door leaf 2 can effectively prevent the low temperature in the cold storage from diffusing to the outside of the cold storage, slow down the heat exchange speed, maintain the stability of the low temperature environment in the cold storage, reduce the load of the refrigeration system, and on the other hand, ensure that the temperature of the door leaf 2 is higher than the dew point temperature, prevent the water vapor in the air from condensing into water droplets, frost or ice on the surface of the door leaf 2, and protect the integrity of the door body structure and the thermal insulation layer; as the temperature of the door leaf 2 gradually rises, when it reaches or exceeds the preset upper limit temperature value, the controller receives the signal feedback by the temperature sensor again, and automatically cuts off the power supply of the electric heating wire 10 to stop heating; the cycle is repeated, and the intelligent linkage among the temperature sensor, the controller and the electric heating wire 10 realizes the precise control of the temperature of the steel heat preservation door, so that the steel heat preservation door is always in the best heat preservation and anti-condensation state, and the efficient operation of the cold storage is guaranteed.

[0028] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments should, therefore, be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0029] Furthermore, it should be understood that although the present specification is described in terms of exemplary embodiments, not every implementation embodies only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other implementations that those skilled in the art can understand.

Claims

1. A steel thermal door comprising a door frame (1) and a door leaf (2), characterized in that, One side of the door leaf (2) is provided with two hinges (4) fixed by bolts, the door leaf (2) is hinged with the door frame (1) through the hinges (4), the outer side of the door leaf (2) is provided with a steel plate layer (8) with moderate thickness, an insulation layer is arranged in the steel plate layer (8), the insulation layer is made of polyurethane foam (9), and the surface of the polyurethane foam (9) is embedded with an electric heating wire (10).

2. A steel insulated door according to claim 1, characterized in that The door leaf (2) is embedded with a controller and a temperature sensor, a control panel (3) is fixedly installed on the side of the door leaf (2) away from the hinges (4), the control panel (3) is electrically connected with the temperature sensor, and the electric heating wire (10) is electrically connected with the controller.

3. The steel insulated door according to claim 1, wherein, The upper part of the door frame (1) is provided with a horizontal wire channel (5), the upper part of the side of the door frame (1) close to the hinges (4) is provided with a vertical wire channel (6), and the vertical wire channel (6) is communicated with the horizontal wire channel (5).

4. A steel insulated door according to claim 3, wherein, The inner side of the end face of the door frame (1) close to the hinges (4) is provided with a wire hole one (7), and the wire hole one (7) is communicated with the vertical wire channel (6).

5. The steel insulated door according to claim 1, wherein, The side end face of the door leaf (2) close to the hinges (4) is provided with a wire hole two (11) close to the upper part, and the wire hole two (11) corresponds to the position of the wire hole one (7).

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