The goods showing cabinet that possesses hot and cold storage function
Technical field
The utility model relates to a kind of goods showing cabinet, refers in particular to a kind of hot and cold storage that possesses simultaneously
The goods showing cabinet of function.
Background technology
Common in the market goods showing cabinet is used in supermarket and the convenience store more; Be provided with step shelf in the showcase; Commodity are put into different categories on the shelf that is placed on showcase for sale; Also be provided with the air channel in the cabinet of showcase; Said air channel through the showcase bottom, the showcase back extends to the showcase top, the refrigeration plant that is arranged at the showcase bottom sucks the air channel with air in the showcase cabinet and cools air to the exhaust outlet that again cold air is delivered to top, air channel after temperature required and discharges, and thus the commodity that are given on the shelf is cooled off.
Simultaneously, in order to satisfy the client, also need dispose the goods showing cabinet that band adds temperature function in the supermarket usually to the canned and demand bottled drink hot drink.For this reason, Chinese patent document CN2912392Y will disclose a kind of " hot and cold dual-purpose goods showing cabinet " through reclaiming cooling back air channel design improvement: make it to form the removable structure of a charged heat pipe heater, form the new tunnel of a heat air delivery.Make traditional refrigeration-type goods showing cabinet change over goods showing cabinet with heating function.But say that from function of use it only is to existing a kind of improvement of refrigeration-type goods showing cabinet, does not break away from the traditional mode of a cabinet one usefulness.
In addition; Chinese patent document CN200610139838 discloses the dual-purpose showcase of an a kind of cabinet; The part partition member that it is provided with through the bottom at ventilating duct; The air channel is separated into is communicated with commodity portion one side sections and showcase main body two parts respectively, controlled cold air is provided respectively through two coolers that are arranged on bottom, above-mentioned two separation air channels, and the commodity shelf or the division board that play buffer action through inserting in showcase commodity portion; Insert separation air channel with incorporating section one side; And set up the gas passage that an ability is connected with the separation air channel of incorporating section one side at the commodity shelf that plays buffer action or the bottom of division board, thus control the exhaust position of cold air, the commodity in the showcase partly is divided into the display space in different temperatures district, top and the bottom.Reach indoor designing requirement of taking in the showcase of the different commodity of storage temperature simultaneously to commodity portion.
In addition, in document data, also imagine the electrical heating heater is set on the commodity shelf, make to be given in these commodity that have on the heating function shelf and to be in heated condition, thereby realize preserving simultaneously in the same goods showing cabinet commodity of hot and cold two kinds of demands of different.But, in concrete technical scheme, do not provide feasible heating board structure.
The utility model content
The purpose of the utility model: aim to provide a kind of goods showing cabinet that possesses hot and cold storage function simultaneously.Described electrical heating shelf had both satisfied the purpose of client's heat hot beverage effectively applicable to the refrigeration or the heating environment of complicacy, also improved rate of energy simultaneously.
In order to achieve the above object; This goods showing cabinet that possesses hot and cold storage function simultaneously that the utility model proposes comprises cabinet, commodity portion, shelf, ventilating duct, air channel barrier and electrical heating shelf, and described commodity portion is arranged on the open front portion of cabinet; Be provided with the multilayer shelf in the commodity portion from top to bottom; Ventilating duct extends to the showcase top by the showcase bottom through the showcase back, is provided with air channel barrier moving up and down in the ventilating duct vertical section, and the electrical heating shelf is arranged on the shelf; It is characterized in that: said electrical heating shelf comprises upper cover plate, lower shoe, electrical heating wire and temperature control circuit; Described upper cover plate is inverted " recessed " shape, " recessed " shape that described lower shoe becomes just putting, and the upper cover plate cover is buckled on the lower shoe; Described electrical heating wire is touring ring-type and is arranged on the upper cover plate inner surface, and it is inner that described temperature control circuit is arranged on the electrical heating shelf.
Described temperature control circuit comprises leakage switch, fuse, electronic temperature control sensor, disc type temperature controller and Thermal Cutoffs, and described leakage switch and fuse are followed in series to form current protecting circuit; Described electronic temperature control sensor, disc type temperature controller and Thermal Cutoffs constitute one group of temperature protection circuit; Described current protecting circuit is connected with described electronic temperature control sensor earlier, and then is connected in series with disc type temperature controller, Thermal Cutoffs and the electrical heating wire of two groups of parallel connections, thereby constitutes whole temperature control circuit.
Also be provided with the mineral wool thermal insulation board in the described electrical heating shelf, described mineral wool thermal insulation board evenly is laid on the inner surface of lower shoe.
The outer additional insulation layer that also is provided with in described electrical heating shelf bottom.
The electrical heating shelf bottom that said air channel barrier position is provided with is provided with the air-out passage that is connected with ventilating duct bottom cooling air.
Described upper cover plate and lower shoe are processed by the metal heat-conducting material, and described metal heat-conducting material comprises iron plate, aluminium sheet.
This goods showing cabinet that possesses the charged heating shelf of hot and cold storage function simultaneously according to above technical scheme proposition; Can fast and effeciently directly heat the commodity of shelving at an upper portion thereof; Not only satisfy the dual-purpose requirement of client's one cabinet, also reduce the loss of freezing and heating energy consumption simultaneously.
Description of drawings
Accompanying drawing 1 is the overall structure sketch map of showcase;
Accompanying drawing 2 is the floor map of electrical heating shelf;
Accompanying drawing 3 is the overall structure sketch map of electrical heating shelf;
Accompanying drawing 4 is the overall structure explosive view of electrical heating shelf;
Accompanying drawing 5 is the sketch map of temperature control circuit.
Among the figure: the 1-cabinet 2-commodity 3-of portion shelf 4-ventilating duct 5-air channel plate washer 6-electrical heating shelf 7-upper cover plate 8-disc type temperature controller 9-Thermal Cutoffs
10-electronic temperature control sensor 11-mineral wool thermal insulation board 12-lower shoe 13-additional insulation layer 14-electrical heating wire 15-leakage switch 16-fuse 17-air-out passage.
The specific embodiment
This goods showing cabinet that possesses hot and cold storage function simultaneously shown in accompanying drawing 1-4; Comprise cabinet 1, commodity portion 2, shelf 3, ventilating duct 4, air channel barrier 5 and electrical heating shelf 6; Described commodity portion 2 is arranged on the open front portion of cabinet 1, is provided with multilayer shelf 3 in the commodity portion 2 from top to bottom, and ventilating duct 4 extends to cabinet 1 top by cabinet 1 bottom through cabinet 1 back; Be provided with air channel barrier 5 moving up and down in ventilating duct 4 vertical sections; Electrical heating shelf 6 is arranged on the shelf 3, it is characterized in that: said electrical heating shelf 6 comprises upper cover plate 7, lower shoe 12, electrical heating wire 14 and temperature control circuit, and described upper cover plate 7 is inverted " recessed " shape; 12 one-tenth " recessed " shapes of just putting of described lower shoe, upper cover plate 7 covers are buckled on the lower shoe 12; Described electrical heating wire 14 is touring ring-type and is arranged on upper cover plate 7 inner surfaces, and described temperature control circuit is arranged on electrical heating shelf 6 inside.
Comprise leakage switch 15, fuse 16, electronic temperature control sensor 10, disc type temperature controller 8 and Thermal Cutoffs 9 like the described temperature control circuit of Fig. 5, described leakage switch 15 is followed in series to form current protecting circuit with fuse 16; Described electronic temperature control sensor 10, disc type temperature controller 8 and Thermal Cutoffs 9 and constitute one group of temperature protection circuit; Described current protecting circuit is connected with described electronic temperature control sensor 10 earlier, and then is connected in series with disc type temperature controller 8, Thermal Cutoffs 9 and the electrical heating wire 14 of two groups of parallel connections, thereby constitutes whole temperature control circuit.When one group of temperature protection circuit broke down, another group temperature protection circuit can work on, and guaranteed that the electrical heating shelf is operated in the confidence band.Usually the electronic temperature control sensor is arranged on 70 ℃, and the working range of disc type temperature controller is arranged on 60 ℃ to 80 ℃, is lower than 60 ℃ or when being higher than 80 ℃, the disc type temperature controller stops heating work when the electronic temperature control sensor detects electrical heating shelf surface temperature; When the electronic temperature control sensor detects that the electrical heating surface temperature is returned to more than 60 ℃ and below 80 ℃ the time, the disc type temperature controller restarts heating work.If electronic temperature control sensor and disk temperature controller all lost efficacy; When that reaches the limiting temperature of Thermal Cutoffs when the electrical heating shelf temperature; Thereby whole heater circuit is cut off in Thermal Cutoffs fusing; Stop the heating work of electrical heating shelf, avoid the generation of peril effectively, the limiting temperature of typical temperature fuse is set to 105 ℃.
Also be provided with mineral wool thermal insulation board 11 in the described electrical heating shelf 6, described mineral wool thermal insulation board 11 evenly is laid on the inner surface of lower shoe 12.
Described electrical heating shelf 6 bottoms also are provided with additional insulation layer 13.
Electrical heating shelf 6 bottoms that said air channel barrier 5 positions are provided with are provided with the air-out passage 17 that is connected with ventilating duct 4 bottom cooling airs.
Described upper cover plate 7 is processed by the metal heat-conducting material with lower shoe 12, and described metal heat-conducting material comprises iron plate, aluminium sheet.
This goods showing cabinet that possesses hot and cold storage function simultaneously according to above technical scheme proposition; Utilize an air channel deep bead 5 isolated ventilation roads 4 that insert ventilating duct 4; And through being arranged on the air-out passage 17 of these air channel deep bead 5 lower portion; Whole cabinet inside is separated into: the commodity area heated directly can be given by electrical heating shelf 6 in top; The bottom is the refrigeration commodity storage space of cooling air control, has reached with the storage cabinet effect that realizes hot and cold two kinds of temperature between same display area.