The ice Wen Ku of multiple spot temperature control
Technical field
The utility model belongs to food storage preservation device technical field, is specifically related to a kind of ice Wen Ku of multiple spot temperature control.
Background technology
The Icetemperature Storage preservation technique is to originate from Japan, it be with food storage in 0 ℃ between the food freezing point, it has unique advantage at aspects such as keeping food freshness and local flavor, is the refrigeration that continues, a kind of emerging storage practice after freezing is paid attention to more and more widely.Icing warm refrigerating equipment compares with common refrigerating equipment, maximum difference is to ice warm storehouse accuracy of temperature control height, generally require storehouse temperature fluctuation range in ± 0.5 ℃, bigger temperature fluctuation will reduce the food storage quality greatly, ice the uniformity that warm warehouse temperature distributes, very big to the storage period influence of preserving the food of position in different sink.Application number is that 2008201526940 Chinese patent discloses a kind of ice Wen Ku, the fluctuation range of utilizing converter technique will ice Wen Kukuwen is controlled at ± 0.5 ℃ in, it is the mean temperature of control ice Wen Kunei each point, does not relate to the uniformity of each point Temperature Distribution in the warm Kuku of ice.When frequency conversion air-cooler in the storehouse was operated in low frequency (slow-speed of revolution), wind speed was lower, the inhomogeneous of each point Temperature Distribution can occur, the point for measuring temperature temperature height that promptly has, and the point for measuring temperature temperature that has is low, and Icetemperature Storage food is caused adverse effect.
Summary of the invention
Technical problem to be solved of the present utility model is, a kind of ice Wen Ku of multiple spot temperature control is provided, and improves the uniformity that the warm warehouse temperature of ice distributes.
In order to address the above problem the technical solution of the utility model be:
The ice Wen Ku of multiple spot temperature control, but comprise a storehouse body, be arranged on the storehouse external body the condensate compressor group that is used to freeze, be arranged on two frequency conversion air-coolers of the alternation of body inside, storehouse, the condensate compressor group that is arranged on the storehouse external body is passed the storehouse body by pipeline and is connected with two frequency conversion air-coolers that are arranged on body inside, storehouse; It is characterized in that be evenly distributed with a plurality of temperature sensors in body inside, storehouse, described a plurality of temperature sensors connect a controller, described controller connects condensate compressor group and two air-coolers.
Described condensate compressor group is a frequency-changeable compressor, frequency-changeable compressor is wherein not a kind of.
Described controller is the wherein a kind of of single-chip microcomputer, computer, Programmable Logic Controller.
Body top, described storehouse is provided with air channel and the air-supply orifice plate that is connected with the air channel, and two air-coolers are arranged side by side in the same air channel.
The air channel is made up of supply air duct and return airway.
When the condensate compressor group is freezed, a frequency conversion air-cooler work refrigeration; Lower or close at the rotation speed of fan of this air-cooler, when the maximum of the temperature difference is greater than 1 ℃ or certain assigned temperature between any two points for measuring temperature in the temperature data that a plurality of points for measuring temperature collect, controller is controlled the blower fan operation of an other frequency conversion air-cooler and is worked in a certain frequency, and the temperature difference between any two points for measuring temperature of feasible ice Wen Kunei is less than 1 ℃ or certain assigned temperature.
Arrange the main purpose of two air-coolers in the storehouse, when being wherein air-cooler defrosting on the one hand, other air-cooler refrigeration to offset air-cooler defrosting heat, avoids it to be diffused into the rise that causes the storehouse temperature in the storehouse; When being frequency conversion air-cooler refrigeration on the other hand, the frequency conversion fan in another air-cooler assists it to control the uniformity that storehouse temperature distributes well.
The main task of control system is that according to the temperature arithmetic mean of instantaneous value variation of a plurality of points for measuring temperature, the operating frequency (rotating speed) of blower fan in the regulation and control refrigeration air-cooler is with the fluctuating range of mean temperature in the control storehouse; The temperature difference between two points for measuring temperature in the temperature data that collects according to a plurality of points for measuring temperature is regulated and control the operating frequency (rotating speed) of blower fan in another air-cooler, the uniformity that distributes with the control storehouse temperature.If what refrigeration unit adopted is frequency-changeable compressor, electric expansion valve, their duty is also regulated and control by control system.
The utility model has the advantages that: the temperature difference between each point for measuring temperature of ice Wen Kunei can be controlled at 1 ℃ with interior or certain specified for temperature ranges, improve the uniformity that the warm warehouse temperature of ice distributes greatly.
Description of drawings
Fig. 1 is the control system principle schematic of the ice Wen Ku of the utility model multiple spot temperature control;
Fig. 2 is an ice Wen Kuku body internal structure schematic diagram described in the utility model;
Fig. 3 is an ice Wen Kuku body other direction internal structure schematic diagram described in the utility model;
Among the figure: 1. temperature sensor, 2. controller, 3. condensate compressor group, 4. first supplying valve, the 5. first sweat cooling gilled tube, the 6. second sweat cooling gilled tube, 7. second supplying valve, 8. first blower fan, 9. second blower fan, 10. first frequency converter, 11. second frequency converters, 12. supply air ducts, 13. air-supply orifice plate, 14. the return air baffle plate, 15. return airways, 16. storehouse bodies
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As Figure 1-3, in the present embodiment be 20m
3Ice Wen Ku, evenly arrange eight temperature sensors 1 in the storehouse, be divided into two-layer, four on upper strata, four of lower floors, temperature sensor 1 and controller 2 are connected by holding wire, controller 2 respectively with condensate compressor group 3, first frequency converter, 10, the second frequency converters 11 connect by holding wire, first frequency converter 10 and second frequency converter 11 respectively with first blower fan 8, second blower fan 9 connects by electric wire, condensate compressor group 3 is connected with second supplying valve 7 with first supplying valve 4 by pipeline respectively, and first supplying valve 4 is connected with the first sweat cooling gilled tube 5 by pipeline, and second supplying valve 7 is connected with the second sweat cooling gilled tube 6 by pipeline.The first sweat cooling gilled tube 5 and first blower fan 8 are formed first air-cooler, and the second sweat cooling gilled tube 6 and second blower fan 9 are formed second air-cooler.First air-cooler and second air-cooler are installed in a side of storehouse inner top side by side, the air-out oral-lateral of air-cooler, storehouse inner top are installed air-supply orifice plate 13, the return air oral-lateral of air-cooler, install back windshield plate 14, air-cooler, air-supply orifice plate 13 and return air baffle plate 14 are formed the air blow and return system.
The course of work is as follows: put into the temperature control program that weaves in advance in controller, when mean temperature in the detected storehouse during more than or equal to (design temperature+0.5 ℃), the work of condensate compressor group, in two air-coolers one, the for example first air-cooler work, promptly first supplying valve is opened, the first blower fan work; When the maximum of the temperature difference is greater than 1 ℃ or certain assigned temperature between any two points for measuring temperature in the temperature data that a plurality of points for measuring temperature collect, the second blower fan work, second supplying valve still keeps closing, promptly second air-cooler air feed does not freeze, the temperature difference in the storehouse between any two points for measuring temperature is less than 1 ℃ or certain assigned temperature, and second blower fan quits work.The operating frequency of first blower fan and second blower fan (rotating speed) is to be regulated and control by the program of finishing in advance in the controller.
Although the disclosed ice Wen Ku that relates to a kind of multiple spot temperature control has been carried out special description with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from the spirit and scope of the present invention, all variations and modification are all within the scope of the present invention.