Evaporator coil insert

Patent metadata

Field	Value
Publication number	US-11009271-B2
Application number	US-201816170885-A
Country	US
Kind code	B2
Filing date	Oct 25, 2018
Priority date	Oct 25, 2018
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

In one embodiment, an apparatus includes an insert for an evaporator coil. The insert is located within the evaporator coil. The insert for the evaporator coil reduces refrigerant charge in the evaporator coil and causes refrigerant flowing through the evaporator coil to change direction. The insert for the evaporator coil includes a solid core and a plurality of support legs.

First claim

What is claimed is:

1. An apparatus, comprising:
an insert for an evaporator coil, wherein the insert comprises a solid core and a plurality of support legs, wherein the cross-sectional shape of the solid core is non-circular;
wherein:
the insert is located within the evaporator coil;
the insert reduces refrigerant charge in the evaporator coil by reducing a volume of refrigerant within the evaporator coil; and
the insert causes refrigerant flowing through the evaporator coil to change direction;
the solid core comprises a first end upstream of the insert and a second end opposite to the first end downstream of the insert;
a first area of the solid core at the first end is greater than a second area of the solid core at the second end.

2. The apparatus of claim 1 , wherein:
each support leg of the plurality of support legs is attached to a side or a corner of the solid core;
each support leg of the plurality of support legs contacts an inner surface of the evaporator coil; and
the solid core does not contact the inner surface of the evaporator coil.

3. The apparatus of claim 1 , wherein the insert is secured to an inner surface of the evaporator coil using brazing.

4. The apparatus of claim 1 , wherein the insert is secured to an inner surface of the evaporator coil using compression.

5. The apparatus of claim 1 , wherein:
the insert comprises a plurality of sides;
a first side of the plurality of sides faces a first direction at a first end of the insert; and
the first side of the plurality of sides faces a second direction at a second end of the insert.

6. The apparatus of claim 1 , wherein the solid core comprises one or more of the following materials: copper, steel, and aluminum.

7. A system, comprising:
an evaporator coil; and
an insert for the evaporator coil, wherein the insert comprises a solid core and a plurality of support legs, wherein the cross-sectional shape of the solid core is non-circular;
wherein:
the insert is located within the evaporator coil;
the insert reduces refrigerant charge in the evaporator coil by reducing a volume of refrigerant within the evaporator coil; and
the insert causes refrigerant flowing through the evaporator coil to change direction;
the solid core comprises a first end upstream of the insert and a second end opposite to the first end downstream of the insert;
a first area of the solid core at the first end is greater than a second area of the solid core at the second end.

8. The system of claim 7 , wherein:
each support leg of the plurality of support legs is attached to a side or a corner of the solid core;
each support leg of the plurality of support legs contacts an inner surface of the evaporator coil; and
the solid core does not contact the inner surface of the evaporator coil.

9. The system of claim 7 , wherein the insert is secured to an inner surface of the evaporator coil using brazing.

10. The system of claim 7 , wherein the insert is secured to an inner surface of the evaporator coil using compression.

11. The system of claim 7 , wherein:
the insert comprises a plurality of sides;
a first side of the plurality of sides faces a first direction at a first end of the insert; and
the first side of the plurality of sides faces a second direction at a second end of the insert.

12. The system of claim 7 , wherein the solid core comprises one or more of the following materials: copper, steel, and aluminum.

13. A method, comprising:
locating an insert within an evaporator coil, wherein the insert comprises a solid core and a plurality of support legs, wherein the cross-sectional shape of the solid core is non-circular;
wherein:
the insert reduces refrigerant charge in the evaporator coil by reducing a volume of refrigerant within the evaporator coil; and
the insert causes refrigerant flowing through the evaporator coil to change direction;
the solid core comprises a first end upstream of the insert and a second end opposite to the first end downstream of the insert;
a first area of the solid core at the first end is greater than a second area of the solid core at the second end.

14. The method of claim 13 , wherein:
each support leg of the plurality of support legs is attached to a side or a corner of the solid core;
each support leg of the plurality of support legs contacts an inner surface of the evaporator coil; and
the solid core does not contact the inner surface of the evaporator coil.

15. The method of claim 13 , wherein the insert is secured to an inner surface of the evaporator coil using brazing.

16. The method of claim 13 , wherein the insert is secured to an inner surface of the evaporator coil using compression.

17. The method of claim 13 , wherein:
the insert comprises a plurality of sides;
a first side of the plurality of sides faces a first direction at a first end of the insert; and
the first side of the plurality of sides faces a second direction at a second end of the insert.

Assignees

• Heatcraft Refrigeration Products Llc

Inventors

• Sun Xi

Classifications

• F25B2500/09

  Improving heat transfers · CPC title

• F25B39/028 Primary

  having distributing means · CPC title

• F28F1/42

  the means being both outside and inside the tubular element · CPC title

• F25B2500/05

  Cost reduction · CPC title

• F25B39/02 Primary

  Evaporators · CPC title