Low-temperature refrigerator device structure

Abstract

The invention relates to a low-temperature refrigerator device structure. Foot embedded parts are arranged on the lower parts of support steel upright posts; the support steel upright posts are connected through steel upright post rack connecting pieces; the upper parts of the support steel upright posts are connected through support steel upright post connecting pieces; the foot embedded parts are arranged in a raft foundation; an upper heat insulation board is arranged on the support steel upright posts; lateral surface heat insulation boards are arranged on the outer sides of the support steel upright posts; a bottom surface heat insulation board is arranged below the raft foundation; a compressor, a condenser, a refrigerant circulating barrel, a refrigerant circulating pump and a calandria evaporator are connected through a refrigerant pipeline; and the calandria evaporator is arranged in a refrigerator body consisting of the upper heat insulation board, the lateral surface heat insulation boards and the bottom surface heat insulation board. The low-temperature refrigerator device structure is safe, controllable, high-efficiency and energy-saving.

Description

Technical field: [0001] The invention relates to a low-temperature cold storage structure, in particular to a low-temperature cold storage device structure. Background technique: [0002] The shelf height of the ordinary low-temperature cold storage or the rack-separated low-temperature cold storage makes the structure of the low-temperature cold storage very large, and the basic cost is also high, which cannot make the most of the limited floor area. The most taboo of ordinary low-temperature cold storage or low-temperature cold storage with separate racks is the structural column in the warehouse. If the column is in the cargo compartment, the entire row of goods will be wasted; if the column is between rows of shelves, the width of the three-dimensional low-temperature cold storage will be increased. Large, it not only increases the civil construction investment but also wastes a lot of space in the warehouse; and it is easy to form a cold bridge, wasting a lot of cooling...

AI Technical Summary

Problems solved by technology

But even with thick insulation, a lot of cooling will still be lost

[0006] The evaporative refrigeration of ordinary cold storage adopts flooded or dry evaporative refrigeration. The disadvantages are: although the flooded evaporative refrigeration method has high cooling efficiency, it needs to use a large amount of refrigerant; although the dry evaporative refrigeration uses less refrigerant, However, the utilization rate of the evaporator is low and the refrigeration efficiency is not high. Once the problem of liquid return occurs, the refrigeration equipment will be damaged

[0007] During the use of ordinary refrigeration equipment, the oil circuit in the compressor will generate a lot of heat energy. If it cannot be cooled in time, it will affect the normal use of the compressor.

Ordinary technical solutions rely on additional facilities for cooling, which not only consumes energy but is also inefficient

However, if the general cold storage base insulation layer is kept at low temperature for a long time, it is easy to cause the foundation to freeze due to overcooling and thermal imbalance.

[0008] Ordinary technologies for changing high-temperature and high-pressure refrigerants into low-pressure and low-temperature refrigerants use thermal expansion, which not only has low efficiency, but also has low energy efficiency ratio.

[0009] Ordinary cold storage refrigeration adopts intermittent refrigeration mode, and it usually shuts down after more than ten hours of starting up. This is because the cooling capacity cannot be well controlled. In order not to overcool the cold storage, the refrigeration unit can only be turned on and off intermittently.

This will lead to a large change in the temperature difference of the cold storage, and an increase in the heat transfer temperature difference with the outside world, which reduces the efficiency of the refrigeration system.

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