Tissue cooling device
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Solution Overview
Problem
Existing tissue cooling devices face challenges in maintaining a consistent temperature for objects to be cooled, leading to temperature fluctuations that can affect the quality of food and other items.
Innovation Solution
A tissue cooling device comprising a first cooler generating first cold air and a second cooler that adjusts the gas to form second cold air, using a heat exchanger with an adjustment substance supply unit to achieve a target temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional ON-OFF control is used to supply cold air, then cooling operation can be performed, but temperature fluctuation of gas inside the device becomes equal to or greater than 4°C
Solution Approach 1:
The patent introduces an intermediate heat exchanger between the cold air source and the storage space. This intermediate heat exchanger uses a cooling medium (such as ice or refrigerant) to indirectly cool the air, avoiding direct contact with extremely cold air that would cause large temperature fluctuations. The intermediary absorbs and releases heat gradually, stabilizing the temperature of the air supplied to the storage space.
Solution Approach 2:
The patent changes the temperature parameter of the cooling medium in the intermediate heat exchanger to match the desired storage temperature more closely. By adjusting the cooling medium temperature to be only slightly lower than the target temperature (rather than using much colder air), the system achieves better temperature stability while still maintaining effective cooling.
2Temperature
If cold air at low temperature is supplied to keep environmental temperature at predetermined temperature, then cooling effect is achieved, but temperature fluctuation occurs affecting quality of foods
Solution Approach 1:
The intermediate heat exchanger acts as a buffer that prevents direct thermal shock to the food. Instead of supplying cold air that is significantly lower than the target temperature, the system uses the intermediate heat exchanger to gradually transfer heat, ensuring the food is cooled smoothly without sudden temperature changes that would degrade quality.
Solution Approach 2:
The system pre-cools the air in the intermediate heat exchanger to a temperature that is only slightly below the desired storage temperature, rather than using much colder air. This beforehand cushioning prevents temperature overshoot and fluctuations that would harm food quality, by preparing the cooling medium at an appropriate temperature before it contacts the storage space.
3Temperature
If ice is used to keep temperature at about 0 degrees Celsius, then temperature control is improved, but complexity of the device increases with ice crushing unit and multiple blowers
Solution Approach 1:
The patent combines the cooling medium storage and heat exchange functions into a single integrated intermediate heat exchanger unit. Rather than having separate ice storage, ice crushing, and distribution systems, the design merges these functions into one component that directly contacts the air stream, simplifying the overall device structure while maintaining precise temperature control.
Solution Approach 2:
The intermediate heat exchanger serves multiple functions simultaneously: it stores the cooling medium, performs heat exchange, and regulates air temperature. This multi-functional design eliminates the need for separate specialized components for each function, reducing device complexity while achieving the desired temperature control precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively maintains the object to be cooled at a predetermined temperature, reducing temperature fluctuations and preserving the quality of food and other items.
Implementation Method 1
a heat exchanger having a surface to be in contact with the gas supplied from the first cooler
Implementation Method 2
an adjustment substance supply unit configured to supply an adjustment substance for adjusting a temperature of the heat exchanger to the surface of the heat exchanger to be in contact with the gas supplied from the first cooler. The adjustment substance supplied from the adjustment substance supply unit has a freezing point higher than a temperature of the first cold air
Data Source
AI summary
The tissue cooling device includes: a first cooler having a function of generating first cold air; and a second cooler to which gas is supplied from the first cooler, the second cooler adjusting the gas to form second cold air, wherein the second cooler includes: a heat exchanger having a surface to be in contact with the gas supplied from the first cooler; and an adjustment substance supply unit configured to supply an adjustment substance for adjusting a temperature of the heat exchanger to the surface of the heat exchanger, wherein the adjustment substance supplied from the adjustment substance supply unit has a freezing point higher than a temperature of the first cold air.