Combination discharge gas muffler and water heater

• US 4,373,354 A
• Filed: 09/28/1981
• Issued: 02/15/1983
• Est. Priority Date: 09/28/1981
• Status: Expired due to Fees

• Current Assignee: American Standard Inc. (Trane Technologies plc)
• Original Assignee: Trane CAC Incorporated
• Inventors: Sawyer, George N.
• Primary Examiner(s): King, Lloyd L.
• Application Number:
  US06/306,024
• Time in Patent Office: 505 Days
• Field of Search: 62/296, 62/238.6, 62/324.4, 237/2 B
• US Class Current: 62/238.6
• CPC Class Codes: F24D 17/02 using heat pumps
• CPC Class Codes: F25B 13/00 Compression machines, plants or systems, with reversible cycle defrosting cycles F25B47/02

Abstract

A muffler for attenuating the sound of the hot refrigerant gas discharged from a hermetic refrigeration compressor and for transferring heat from the hot discharged refrigerant gas to a water tube arranged in heat exchange relationship with the muffler. The water tube is adapted to be connected to a water heater tank in a manner that recirculates water from the tank through the water tube in a closed circuit.

Claims

1. A muffler for a refrigeration system having heat exchange means being adapted to be connected to a water source, said refrigeration system including a compressor, a condenser for condensing hot gaseous refrigerant discharged from said compressor, an evaporator for evaporating said condensed refrigerant, said muffler comprising:

a cylindrical housing, a cap portion closing each end of said housing;

an inlet on said housing connected to the refrigerant system for receiving said hot gaseous refrigerant and an outlet arranging said housing in series flow in said refrigeration system;

a tubular casing arranged in said housing having its longitudinal wall spaced from the interior wall of said housing;

a cap on one end of said casing including an inlet, means connecting said inlet to said housing inlet for directing said hot gaseous refrigerant into said casing;

a cap on the other end of said casing including a plurality of outlet apertures for delivering said hot gaseous refrigerant to the interior of said housing;

a helical wall extending between the casing outer wall and housing interior wall to form a passage for said hot gaseous refrigerant between the outlet aperture of said casing and said housing inlet to return said hot gaseous refrigerant to said refrigerant system; and

a water passageway connected to said water source being arranged in heat exchange relationship with the outer surface of said housing being heated by said hot gaseous refrigerant to increase the temperature of said water as it flows through said water tube.

2. The muffler for a refrigeration system recited in claim 1 further including a partition having a plurality of apertures dividing said tubular casing.

3. The muffler for a refrigeration system recited in claim 2 wherein said water passageway is a tube in coil form helically wound in intimate contact with the outer wall of said cylindrical housing.

4. The muffler for the refrigeration system recited in claim 3 wherein said hot gaseous refrigerant flow through said passage is in one longitudinal direction relative to said muffler and said water flow through said tube in coil form is in the other longitudinal direction relative to said muffler.

5. In a refrigeration system including a compressor, a discharge line for receiving hot gaseous refrigerant from said compressor, a condenser, an evaporator and a suction line connected to said compressor in series to form a closed refrigerant circuit, a muffler connected in said discharge line including heat exchange means adapted to be connected to a water source, said muffler comprising:

a cylindrical housing having end portions closing said housing;

an inlet in said housing connected to secure hot gaseous refrigerant from said discharge line;

an outlet in said housing connected to return the hot gaseous refrigerant to said discharge line;

a cylindrical casing arranged in said housing having its longitudinal walls spaced from the interior walls of said housing;

a cap on one end of said casing including an inlet, means connected to said housing inlet to divert said hot gaseous refrigerant to the interior of said casing;

an outlet cap on the other end of said casing being provided with openings for discharging said hot gaseous refrigerant into said housing interior;

a partition dividing the interior of said casing, said partition having a plurality of apertures;

a helical wall extending between the housing and casing to form a passage between the casing and housing between said outlet opening in said other end of said casing and said housing outlet; and

a water passageway arranged in heat exchange relationship with the outer surface of said housing being heated by said hot gaseous refrigerant to increase the temperature of said water as it flow through said water tube.

6. In the refrigeration system recited in claim 5 wherein said muffler further includes a partition having a plurality of apertures dividing said tubular casing.

7. The refrigeration system recited in claim 6 wherein said water passageway is a tube in coil form helically wound in intimate contact with the outer wall of said cylindrical housing.

8. The refrigeration system recited in claim 7 wherein said hot gaseous refrigerant flow through said passage is in one longitudinal direction relative to said muffler and said water flow through said water tube in coil form is in the other longitudinal direction relative to said muffler.

9. In the refrigeration system recited in claim 8 wherein said system is a heat pump further including a reversing valve for reversibly connecting said compressor to said heat exchanger for effecting flow through said system in either direction whereby said system may be operated on a cooling cycle with said first heat exchanger functioning as an evaporator or on a heating cycle with said second heat exchanger functioning as an evaporator.

10. A refrigeration system comprising:

a first heat exchanger;

a second heat exchanger;

a conduit including flow restricting means serially connected with said heat exchangers;

means including a compressor having a suction line for withdrawing low pressure refrigerant from said first heat exchanger and discharging hot gaseous refrigerant to said second heat exchanger;

a muffler connected for receiving hot gaseous refrigerant including;

(a) a cylindrical housing, a cap portion at each end of said housing,

(b) an inlet on said housing connected to the hot gaseous refrigerant source and an outlet arranging said housing in series flow between said compressor and said second heat exchanger,

(c) a tubular casing arranged in said housing having its longitudinal walls spaced from the interior walls of said housing,

(d) a cap on one end of said casing including an inlet,

(e) means connecting said casing inlet to said housing inlet for receiving said gaseous refrigerant,

(f) a helical wall extending between the casing outer wall and housing interior wall to form a passage between the outlet aperture of said casing and said housing inlet, and

(g) a water heat exchanger means adapted to be connected to a water source including a water tube arranged in heat exchange relationship with the outer surface of said housing being heated by said gaseous refrigerant to increase the temperature of said water as it flows through said water tube.

11. A refrigeration system recited in claim 10 wherein said muffler includes a partition having a plurality of apertures dividing said tubular casing.

12. A refrigeration system recited in claim 11 wherein said water tube is in coil form helically wound in intimate contact with the outer wall of said cylindrical housing.

13. The refrigeration system recited in claim 12 wherein said hot gaseous refrigerant flow through said passage is in one longitudinal direction relative to said muffler and said water flow through said coil form is in the other longitudinal direction relative to said muffler.