US1768258A - Condenser - Google Patents

Description

f June 24, R, L, K|NG CONDENSER Filed July 21, 1927 I gwn/co1, ROBE/BTL/YG abbozmq Patented June 24, 193@ i UNETED STT ROBERT L. KNG, 0F RICHMOND, VIRGINIA CONDENSER' Application filed July 21, 1927. Serial No. 20?,490.

rlhis invention relates to condensers for refrigerating systems.

An important object of the invention is to provide a novel condenser adapted to be employed in connection with domestic refrigerating systems whereby the apparatus as a whole may be made small and compact.

A further object is to provide a condenser' which is adapted to rapidly dissipate heat and which is assisted in its operation by afan driven by the compressor motor.

A further object is to provide a condenser' including spaced inner and outer walls forming a ccndensinfr chamber provided therein with a coarse screen contacting with the inner and outer vwalls forming the casing to assist in conducting heat thereto to be radiated therefrom. j

A further object is to lprovide a ypreferably cylindrical condensing chamber having slightly spaced inner and cuter walls between which is arranged the screen referred to, the chamber surrounding the compression tanlr and forming tunnel through which air is adapted to be drawn to assist in dissipating heat from the condensing chamber.

Other objects and advantages of the invention will become apparent during the course of the following description.

n the drawings l have shown one embodiment of the invention. ln this showing,

Tligure 1 is a central longitudinal sectional view of a refrigerating apparatus, parts being shown in elevation, and,

Figure 2 is a transverse vertical section ron line 2-2 of Figure 1.

Referring to the drawings the numeral 10 designates a base preferably cast with an interior chamber 11 adapted to receive liquid refrigerant 12 of desired character. A motor 13 is mounted on the base adjacent one end thereof and is provided with an armature shaft 14C adapted to drive a compressor 15. The compressor is provided with an outlet u* opening 16 through which gasified refrigerant is pumped into a compression chamber 17 preferably provided with radiating fins 1S. rllhe compressor receives gaseous refrigerant from the expansion coil (not shown) through a pipe 19, as shown in Figure 1. The compression chamber 17 preferably contains abody of a lubricant 2O which'is fed to the moving parts of the compressor through a pipe 2l carrying a screen 22 at its end. The pressure of the gasilied refrigerantin the pressure tanlr is utilized for feeding the lubricant to the compressor. The motor and compressor described are preferably of the type shown and described in my copending application Serial No. 112,3t2, filed May. 28th, and need not be referred to in detail. As will become apparent however, the present inven-l tion is not limited in its application to a compressor and associated parts of any particular types. l

A device forming the subject matter of the present invention comprises a condenser indicated as a whole by the numeral 23. `This condenser is formed of outer and inner preferablv cylindrical and slightly lspaced walls F 24 and 25, and it is preferred that these walls be formed of a metal possessing `a high degree of heat conductivity, such as copper or Athe like. The ends of the outer wall 2li may be turned inwardly around the adjacent ends of the inner Wall as at 26 to form a fluid tight joint. rlhe inner end of the condenser may be mounted in a'cylindrical recess 27 formed in a bracket 28 arranged between the motor and condenser. Arms 29 are connected between the inner end of the pressure tank and the corresponding end of the condenser to properly space these elements with respect to each other, andsimilar supporting arms 30 may be arranged at the forward end of the pressure tank. The latter arms are preferably connected to an end member 81 having a cy 'lindrical recess 32 formed therein to receive the forward end of the condenser. The pressure chamber preferably tapers toward its outer end as indicated in Eigure 1`to facilitate the entrance of air into the condenser in a manner to be described.

The outer and inner walls 24 and 25 of the condenser are conccntrically arranged where by they are uniformly spaced throughout. Between these walls there is arranged a preferably coarse Ymesh* screen 33 which may be formed of bronze or any other metal possessing a high degree of heat conductivity and the Vlchamber whereby it is necessary for the refrigerant being condensed to flow substantially throughout the length of the condenser before passing into the chamber 11. The motor 13 is spaced a substantial distance fromV the compressor and in this space a fan 36 is mounted upon the armature shaft lll. The

bracket 23 is provided with large circumfer.

entially spaced openings 37 to permit air to pass through the bracket.

VThe operation of the device is as follows:

The compressor is driven by the motor 13 and is supplied with gaseous refrigerant through the pipe 19. The refrigerant is pumped into the tank 17 in gaseous form and underV pressure, and from the pressure tanl it flows through the pipe 34 to the forward end of the condensing chamber. The gas flows rearwardly through the condenser and circulates throughout the circumference thereof. It is necessary for the gas to flow substantially throughout the entire length of the condenser and in so doing, it flows through themeshes of the screen 33. The screen conducts heat to the walls of the condensing chamber, while these walls themselves absorb heat from the gaseous refrig erant and radiate it to the surrounding atmosphere. Thus the refrigerant is liquefied and'returns to t-he chamber 11 through the pipe 35.y From the chamber 11 the liquid goes to the expansion coil through the pipe 38, and from the coil back to the compressor through the pipe 19. The space between the pressure tank and condenser constitutes an air tunnel, and the fan 36 pumps air through this tunnel to assist in carrying off heat from the inner wall of the condenser. The fan also tends to create aA rearwardly moving column of air which also affects the air surrounding the outer wall of the condensing chamber, thus assisting this wall also in radiating heat. `The condenser is highly etlicient and may be made relatively small for a refrigerating unit of a given size. By making the condenser in the form ydescribed and placing it around the pressure chamber, the device as a whole may be made very compact and thus is particularly adapted for use in domestic refrigeration. The column of air moving rearwardly also tends to cool the pressure chamber 17, as will be apparent.

lt is to be understood that the form of thev U5 invention herewith shown and described is to be taken as a preferred example ofthe same, and that various changes in the shape, size and arrangement of parts'ma-y be resorted to Without departing from the spirit of the invention or the scope of the subj oined claims.

I claim:

1. A refrigerating unit including an elongated pressure chamber, and a condenser surrounding said chamber, said condenser comprising spaced concentric inner and outer walls forming a condensing chamber therebetween, and structural means arranged in said chamber and contacting with said walls.

2. A refrigerating unit comprising an elongated pressure chamber, said chamber being substantially circular in cross section and tapering toward one end, and a con-denser sur-k rounding said chamber, said condenser comprising spaced inner and outer walls forming a condensing chamber therebetween, said walls being concentric to each other and to said pressure chamber, and a screen arranged in said condensing chamber and contacting with said walls.

3. A refrigerating unit including an elongated pressure chamber, and a condenser surrounding said chamber, and forming a tunnel, the walls of which are spaced from Y said chamber, said condenser comprising'Y spaced inner and outer walls forming a condensing chamber therebetween, structural means arranged in said chamber and contacting with said walls, and a fan adapted fo force air through said tunnel and around said pressure chamber. Y

ll. A refrigerating unit including a pressure chamber, and a condenser surrounding said chamber, said condenser comprising a casing formed with spaced inner and outer walls forming a condensing chamber therebetween, and structural means arranged in said chamber and contacting'with said walls.

5. A refrigerating unit including a pressure chamber,'a condenser surrounding said chamber and forming a tunnel therefor, said condenser comprising spaced inner and out-V er walls forming a condensing chamber therebetween, structural means arranged in said chamber and contacting with said walls, and means for forcing air through said tunnel.

In testimony whereof l: afhX my signature.

' ROBERT L. KING.

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