Heat exchanger

• US 4,363,355 A
• Filed: 05/09/1980
• Issued: 12/14/1982
• Est. Priority Date: 05/09/1980
• Status: Expired due to Term

• Current Assignee: Martin D. Prucyk
• Original Assignee: Martin D. Prucyk
• Inventors: Prucyk, Martin D.
• Primary Examiner(s): Richter, Sheldon J.
• Application Number:
  US06/148,366
• Time in Patent Office: 949 Days
• Field of Search: 165/178, 165/176, 165/175, 165/173, 165/69, 165/158, 165/163, 165/70, 165/150, 165/151, 165/152, 165/172, 165/83, 165/81, 165/163, 165/DIG. 13, 285/189, 285/286
• US Class Current: 165/81
• CPC Class Codes: F28D 7/08 the conduits being otherwise bent, e.g. in a serpentine or zig-zag F28D7/10 takes precedenceF28D7/0016 and F28D7/0033 take precedence
• CPC Class Codes: F28F 9/0229 Double end plates; Single end plates with hollow spaces
• CPC Class Codes: Y10S 165/064 including intermediate support
• CPC Class Codes: Y10S 165/91 Tube pattern

Abstract

A heat exchanger is provided, comprising a housing defining a cavity therein, the housing having an inlet and outlet for feeding fluid into, and removing fluid from, the cavity of the housing, a pair of fixed spaced head plates fixed to the housing at either end of the cavity to preclude passage of fluid past the plates between the housing and plates, a pair of second head plates, one for each fixed head plate and secured to the side of the fixed head plate remote the other fixed spaced head plate, at least one of which second plates being removably secured to the fixed head plates, a gasket positioned between the fixed head plates and second plates, the housing further comprising covers for covering the head plates and providing a space between the head plates and cover, a pair of spacer plates secured to the housing between the fixed head plates, each spacer plate positioned adjacent each fixed head plate, the spacer plates permitting fluid within the cavity to flow therethrough, each of the fixed and secured removable head plates having a plurality of aligned apertures therethrough, the apertures being arranged in staggered rows of apertures through the plates, each spacer plate adjacent each set of head plates having staggered rows of apertures oriented with respect to the staggered rows of apertures in the head plates and the staggered row of apertures through the other spacer plate to secure lengths of tubing extending between opposed head plates, through apertures in the spacer plates, lengths of heat conducting metal tubing secured to open into the staggered apertures in the opposed head plates and extending through the apertures in the spacer plates, to provide staggered rows of tubing, the tubing being bowed in their length between the spacer plates to extend into spaces created in the cavity arising from the staggering of the rows of tubing, 180° heat conducting metal U-Bends secured in the spaces between the removably secured head plates and cover for connecting the apertures through the removable head plates to connect the lengths of tubing to create a continuous flow path for fluid passing therethrough, from the tubing inlet to the tubing outlet leading into and out of the heat exchanger and an inlet and outlet into and from the tubing passing through the exchanger.

Claims

1. A heat exchanger comprising a housing defining a cavity therein, the housing having an inlet and outlet for feeding fluid into, and removing fluid from, the cavity of the housing, a pair of fixed spaced head plates fixed to the housing at either end of the cavity to preclude passage of fluid past the plates between the housing and plates, a pair of second head plates, one for each fixed head plate and secured to the side of the fixed head plate remote the other fixed spaced head plate, at least one of which second plates being removably secured to the fixed head plates, a gasket positioned between the fixed head plates and second plates, the housing further comprising covers for covering the head plates and providing a space between the head plates and cover, a pair of spacer plates secured to the housing between the fixed head plates, each spacer plate positioned adjacent each fixed head plate, the spacer plates permitting fluid within the cavity to flow therethrough, each of the fixed and secured removable head plates having a plurality of aligned apertures therethrough, the apertures being arranged in staggered rows of apertures through the plates, each spacer plate adjacent each set of head plates having staggered rows. of apertures oriented with respect to the staggered rows of apertures in the head plates and the staggered row of apertures through the other spacer plates to secure lengths of tubing extending between opposed head plates, through apertures in the spacer plates, lengths of heat conducting metal tubing secured to open into the staggered apertures in the opposed head plates and extending through the apertures in the spacer plates to provide staggered rows of tubing, the tubing being bowed in their length between the spacer plates to extend into spaces created in the cavity arising from the staggering of the rows of tubing, so as not to interfere with one another during the tubings'"'"' expansion, 180°

heat conducting metal U-bends secured in the spaces between the removably secured head plates and cover for connecting the apertures through the removable head plates to connect the lengths of tubing to create a continuous flow path for fluid passing therethrough, from the tubing inlet to the tubing outlet leading into and out of the heat exchanger and an inlet and outlet into and from the tubing passing through the exchanger.

2. The heat exchanger of claim 1, wherein the gasket is made of asbestos and vitron rubber.

3. The heat exchanger of claim 1, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-Bends against which the tubing and U-bends abut when secured to the head plates.

4. The heat exchanger of claim 1, wherein the tubing and U-Bends are made of copper or a copper alloy.

5. The heat exchanger of claim 4, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

6. The heat exchanger of claim 3, wherein the tubing and U-bends are silver or copper phosphate soldered to the head plates.

7. The heat exchanger of claim 6, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

8. The heat exchanger of claim 5, wherein the tubing is silver or copper phosphate soldered to the spacer plates.

9. The heat exchanger of claim 7 wherein an arcuate portion of the tubing is soldered to the spacer plates.

10. The exchanger of claim 8, wherein the gasket is made of asbestos and vitron rubber.

11. The heat exchanger of claim 8 wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

12. The heat exchanger of claim 1, wherein both second plates are removably secured to the fixed head plates.

13. The heat exchanger of claim 12, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-Bends against which the tubing and U-bends abut when secured to the head plates.

14. The heat exchanger of claim 2, wherein the tubing and U-Bends are made of copper or a copper alloy.

15. The heat exchanger of claim 14, wherein the gasket is made of asbestos and vitron rubber.

16. The heat exchanger of claim 14, wherein apertures of the head plates into which the tubing and U-bends are connected having internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

17. The heat exchanger of claim 4, wherein the tubing and U-bends are silver or copper phosphate soldered to the head plates.

18. The heat exchanger of claim 17, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

19. The heat exchanger of claim 6, wherein the tubing is silver or copper phosphate soldered to the spacer plates.

20. The heat exchanger of claim 8, wherein an arcuate portion of the tubing is soldered to the spacer plates.

21. The heat exchanger of claim 19, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

22. The heat exchanger of claim 19, wherein apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

26. The heat exchanger of claim 17, wherein the tubing and U-bends are silver or copper phosphate soldered to the head plates.

27. The heat exchanger of claim 26, wherein the apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.

28. The heat exchanger of claim 18, wherein the tubing is silver or copper phosphate soldered to the spacer plates.

29. The heat exchanger of claim 19, wherein an arcuate portion of the tubing is soldered to the spacer plates.

30. The heat exchanger of claim 28, wherein the aperture of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends about when secured to the head plates.

23. A heat exchanger comprising a housing defining a cavity therein, the housing having an inlet and outlet for feeding fluid into, and removing fluid from, the cavity of the housing, a pair of fixed spaced head plates fixed to the housing at either end of the cavity to preclude the passage of fluid past the plates between the housing and plates, a pair of removable head plates, one for each fixed head plate and being removably secured to the side of the fixed head plate remote the other fixed spaced head plate, a gasket positioned between the fixed head plates and second plates, the housing further comprising covers for covering the head plates and providing a space between the head plates and cover, a pair of spacer plates secured to the housing between the fixed head plates, each spacer plate positioned adjacent each fixed head plate, the spacer plates permitting fluid within the cavity to flow therethrough, each of the fixed and secured removable head plates having a plurality of aligned apertures therethrough, the apertures being arranged in staggered rows of apertures through the plates, each spacer plate adjacent each set of head plates having staggered rows of apertures oriented with respect to the staggered rows of apertures in the head plates and the staggered row of apertures through the other spacer plate to secure lengths of tubing extending between opposed head plates, through apertures in the spacer plates, lengths of copper or copper alloy tubing secured to open into the staggered apertures in the opposed head plates and extending through the apertures in the spacer plates, to provide staggered rows of tubing, the tubing being bowed in their length between the spacer plates to extend into spaces created in the cavity arising from the staggering of the rows of tubing, so as not to interfere with one another during the tubings'"'"' expansion 180°

U-bends secured in the spaces between the removably secured head plates and cover for connecting the apertures through the removable head plates to connect the lengths of tubing to create a continuous flow path for fluid passing therethrough, from the tubing inlet to the tubing outlet leading into and out of the heat exchanger and an inlet and outlet into and from the tubing passing through the exchanger.

24. The heat exchanger of claim 23, wherein the gasket is made of asbestos and vitron rubber.

25. The heat exchanger of claim 23, wherein the apertures of the head plates into which the tubing and U-bends are connected have internal ledges extending radially inwardly from the aperture wall, the ledges having a width about the thickness of the tubing and U-bends against which the tubing and U-bends abut when secured to the head plates.