Method and apparatus for heat accumulation from refrigeration machine

• US 5,511,384 A
• Filed: 01/11/1995
• Issued: 04/30/1996
• Est. Priority Date: 01/13/1994
• Status: Expired due to Fees

• Current Assignee: Pichit Likitcheva
• Original Assignee: Pichit Likitcheva
• Inventors: Likitcheva, Pichit
• Primary Examiner(s): Sollecito, John M.
• Application Number:
  US08/371,355
• Time in Patent Office: 475 Days
• Field of Search: 62/59, 62/185, 62/356, 62/430, 62/431, 62/432, 62/436, 62/439, 165/154, 165/168, 165/169
• US Class Current: 62/59
• CPC Class Codes: F24H 4/04 Storage heaters
• CPC Class Codes: F25B 2339/047 Water-cooled condensers
• CPC Class Codes: F25B 39/04 Condensers
• CPC Class Codes: F25B 40/04 Desuperheaters
• CPC Class Codes: F28D 20/00 Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
• CPC Class Codes: F28D 7/106 consisting of two coaxial conduits or modules of two coaxial conduits
• CPC Class Codes: F28D 7/14 both tubes being bent
• CPC Class Codes: Y02E 60/14 Thermal energy storage

Abstract

The losing of a huge amount of energy is overcome by a method and an apparatus for heat accumulation from refrigeration machine of the present invention. The apparatus comprises of two sections. The first section is the smalled diameter heat carrying fluid tube inserted inside the larger diameter refrigerant tube of the condenser, the second section is the expanded cross sectional area refrigerant tube enclosed inside the heat carrying fluid tube. By replacing the conventional refrigerant tube of the condenser by the first section of this invention, by connecting the second section of this invention between the compressor and the condenser of the conventional refrigeration machine, and by feeding the heat carrying fluid into the two heat carrying fluid tubes connected in series in the direction opposite to the direction of the refrigerant flowing inside the refrigerant tube of the refrigeration machine, the heat carrying fluid with its temperature high enough for an industrial use can be obtained.

Claims

1. An apparatus for heat accumulation from a refrigeration machine comprising a first section apparatus for heat accumulation from the refrigeration machine connected to a second section apparatus for heat accumulation from a refrigeration machine connected in series, in which:

a) the first section apparatus for heat accumulation from a refrigeration machine comprises;

a preliminary heat accumulation tube which is smaller in diameter and inserted inside a first refrigerant tube of the condenser of the refrigeration machine such that both its ends emerge outside said first refrigerant tube of the condenser at the regions where the first refrigerant tube enters and leaves said condenser;

a feeding tube for the preliminary heat accumulation tube which at one end is connected to one end of said preliminary heat accumulation tube emerging from said region in which said first refrigerant tube leaves said condenser and at another end is used as an inlet to feed lower temperature heat carrying fluid used to accumulate heat, into said preliminary heat accumulation tube;

a discharge tube for the preliminary heat accumulation tube which at one end is connected to one end of said preliminary heat accumulation tube emerging from said region in which said first refrigerant tube enters into said condenser and at another end is used as an outlet to discharge higher temperature heat carrying fluid used to accumulate heat out of said preliminary heat accumulation tube; and

an inlet and an outlet for said first refrigerant tube of said condenser;

b) the second section apparatus for heat accumulation from a refrigeration machine comprises;

a second refrigerant tube a part of which is increased in its cross sectional area and/or increased in its total internal and external wall surfaces relative the remainder of the tube;

a primary heat accumulation tube which is constructed to enclose said part of said second refrigerant tube which is increased in its cross sectional area and/or increased in its total internal and external wall surfaces relative the remainder of the tube, and constructed to have a space between its internal wall surface and the external wall surface of said part of said second refrigerant tube which is increased in its cross sectional area and/or increased in its total internal and external wall surfaces, and also constructed to have an inlet and an outlet for said space;

a feed tube for said primary heat accumulation tube which at one end is connected to said inlet for said space of said heat accumulation tube and at another end is used as an inlet to feed lower temperature heat carrying fluid used to accumulate heat into said space of said primary heat accumulation tube;

a discharge tube for the primary heat accumulation tube which at one end is connected to said outlet for said space of said primary heat accumulation tube and at another end is used as an outlet to discharge higher temperature heat carrying fluid used to accumulate heat out of the said space of said primary heat accumulation tube; and

an inlet and an outlet for said second refrigerant tube;

c) the connection is made by connecting said discharge tube for the preliminary heat accumulation tube to said feeding tube for the primary heat accumulation tube and by connecting the outlet for said second refrigerant tube to the inlet for said first refrigerant tube of said condenser.

2. A method for modifying a heat accumulation system in a refrigeration machine comprising the steps of replacing the condenser of the refrigeration machine by an apparatus for heat accumulation from a refrigeration machine according to claim 1;

connecting the inlet for said second refrigerant tube to the outlet of the compressor of said refrigeration machine; and

connecting the outlet for said first refrigerant tube of said condensor to the inlet of the evaporator of said refrigeration machine.

3. A method for modifying a heat accumulation system in a refrigeration machine according to claim 2 in which the refrigeration machine is a refrigerator.

4. A method for modifying a heat accumulation system in a refrigeration machine according to claims 2 or 3 in which the heat carrying fluid is water.