Heating and/or cooling system and method for reducing or removing solidified phase change material

Patent metadata

Field	Value
Publication number	US-11499783-B2
Application number	US-202016826672-A
Country	US
Kind code	B2
Filing date	Mar 23, 2020
Priority date	Mar 29, 2019
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

The disclosure relates to a heating and/or cooling system having an energy conversion device included in a refrigerant circuit and having reducing means for reducing and/or removing solidified phase change material from a component of a heat transfer circuit, wherein the reducing means are driven by energy provided from the energy conversion device. The disclosure also relates to a corresponding method for reducing or removing solidified phase change material.

First claim

The invention claimed is:

1. Heating and/or cooling system with a heat transfer medium in which a phase change material to be solidified is contained, comprising:
a circuit, configured to circulate the heat transfer medium;
a reducing means for reducing the phase change material having been solidified in the heat transfer medium; and
an energy conversion device configured to convert a form of energy of the circulated heat transfer medium into a different form of energy, wherein
the different form of energy drives the reducing means for reducing the phase change material.

2. Heating and/or cooling system according to claim 1 , wherein the reducing means reduces the phase change material from a concerned component of the heat transfer circuit.

3. Heating and/or cooling system according to claim 2 , comprising:
a refrigerant circuit configured to circulate a refrigerant therein; and a heat exchanger for transferring heat between the refrigerant circuit and the heat transfer medium,
wherein the concerned component is the heat exchanger.

4. Heating and/or cooling system according to claim 2 , wherein the reducing means comprise any of the following:
a heating device attached to the concerned component,
a device for generating vibrations on and/or in the concerned component,
a device for generating a pulsating flow of the heat transfer material,
a rotating screw within the concerned component that runs at least partially along a heat transfer medium flow path within the concerned component,
a scraping device within the concerned component, that at runs at least partially along a heat transfer medium flow path within the concerned component, the scraping device comprising at least one blade in contact or contactable with a surface of the concerned component, which surface is in contact with the heat transfer medium during operation of the heating and/or cooling system,
a device for impinging ultra sound on the concerned component,
a device comprising at least one piezoelectric transducer.

5. Heating and/or cooling system according to claim 3 , wherein the energy conversion device comprises a generator configured to generate electric energy from the energy transported by the refrigerant,
wherein the reducing means is electrically driven, and wherein the energy conversion device and the reducing means are connected electrically.

6. Heating and/or cooling system according to claim 1 , wherein the energy conversion device comprises or is a turbine or a turbo expander.

7. Heating and/or cooling system according to claim 6 , wherein the turbine or the turbo expander is connected to the reducing means by a shaft.

8. Heating and/or cooling system according to claim 6 , wherein the reducing means is connected to the energy conversion device via a gearbox and/or a belt.

9. Heating and/or cooling system according to claim 3 , wherein the refrigerant circuit comprises expansion means, wherein the expansion means is part of the energy conversion device, and wherein the energy conversion device generates the target form of energy by expanding the refrigerant.

10. Heating and/or cooling system according to claim 3 , wherein the refrigerant circuit comprises a compressor, a condenser, and an evaporator.

11. Heating and/or cooling system according to claim 1 , wherein the circuit comprises a storage device and/or storage tank configured for storing the heat transfer medium and/or the phase change material.

12. Heating and/or cooling system according to claim 1 , wherein the heat transport medium comprises or is a phase change slurry.

13. Method for reducing or removing solidified phase change material from a concerned component of a circuit configured to circulate a heat transfer medium,
wherein a form of energy transported by the heat transfer medium is converted to a different form of energy, and the energy of the different form of energy output produced by this converting is used to reduce the solidified phase change material from the concerned component.

14. Method according to claim 13 , wherein the method is carried out by a heating and/or cooling system.

Assignees

• Mitsubishi Electric Corp

Inventors

• Wu Duan
• Kawaley Georgeanna

Classifications

• F25B13/00

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• F28B9/08 Primary

  for collecting and removing condensate · CPC title

• F25B29/003 Primary

  of the compression type system · CPC title

• F25B2400/14

  Power generation using energy from the expansion of the refrigerant · CPC title

• F25B33/00

  Boilers; Analysers; Rectifiers (boiler-absorbers F25B35/00) · CPC title