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Evaporative cooling systems and methods of controlling product temperatures during delivery

  • US 10,488,095 B2
  • Filed: 05/18/2017
  • Issued: 11/26/2019
  • Est. Priority Date: 05/18/2016
  • Status: Active Grant
First Claim
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1. A system to limit temperature changes of one or more products during transit, comprising:

  • an evaporative cooling system comprising;

    a product cavity that supports a first product while the first product is transported to a delivery location by a delivery vehicle, wherein the cooling system is separate from and removable from the delivery vehicle and comprises an interior wall defining the product cavity, an exterior wall, an evaporative cavity defined between the interior wall and the exterior wall, a coolant dispensing system coupled with the evaporative cavity, at least one evaporative opening exposing a portion of the evaporative cavity to an exterior environment, and a temperature sensor positioned to detect temperature data corresponding to a temperature of the first product while the first product is in transit to be delivered to the delivery location; and

    a temperature control circuit coupled with the temperature sensor and the coolant dispensing system, wherein the temperature control circuit is configured to receive the temperature data from the temperature sensor while the first product is in transit to the delivery location, determine based on the temperature data that the temperature of the first product is greater than a first transport temperature threshold, and autonomously activate the coolant dispensing system to release evaporative coolant into the evaporative cavity while the first product is transported by the delivery vehicle;

    wherein the cooling system further comprises;

    a primary coolant reservoir configured to store the evaporative coolant having a first evaporation rate; and

    a secondary reservoir configured to store a secondary evaporative coolant having a second evaporation rate that is greater than the first evaporation rate such that the secondary evaporative coolant evaporates more rapidly than the first evaporative coolant when in the same conditions;

    wherein the temperature control circuit is configured to identify that the temperature of the first product is greater than a second transport temperature threshold, and activate the coolant dispensing system to inject the secondary evaporative coolant into the evaporative cavity.

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