US1883921A

US1883921A - Heat dissipating device for refrigerating apparatus

Info

Publication number: US1883921A
Application number: US316253A
Authority: US
Inventors: Harry B Hull
Original assignee: Frigidaire Corp
Current assignee: Frigidaire Corp
Priority date: 1928-10-31
Filing date: 1928-10-31
Publication date: 1932-10-25
Anticipated expiration: 1949-10-25

Description

Oct. 25, 1932.

H. B. HULL HEAT DISSIPATING DEVICE FOR REFRIGERATING APPARATUS Original Filed Oct. 31, 1928 June/14ml h d! Patented Oct. 25, '1932 UNITED STATES.

PATENT OFFICE HARRY B. HULL, DAYTON, OHIO, ASSIGNOB TO FBIGIDAIBE CORPORATION, 01 DAYTON, OHIO, A CORPORATION OF DELAWARE HEAT DISSIIATING DEVICE FOR REFBIGEBATING AIPABATUS Application filed October 81, 1928, Serial No. 816,258. Renewed June 4, 1982.

This invention relates to refrigerating apparatus particularly to compressors and driving means therefor.

One of the objects of the invention is to 5 provide an improved means for reducing the noise incident to the operation of apparatus of this type.

More specifically it is an object of the invention to inclose the noisy parts of a refrigerating apparatu's'in a sound absorbing housing and to provide an improved means for dissipating the heat generated within the housing.

Another object of the invention is to provide sound absorbing meansof a character indicated which is readily removable from the refrigerating apparatus to permit inspection and adjustment.

More specifically it is an object of the invention to rovide a heat transmitting member including a quantity of volatile liquid for conducting the heat from within the housin to the outside atmosphere.

Anot erobject of theinvention is to provide improved means for cooling the com-:

pres'sor in arrangements of the character indicated.

Another object of the invention is to provide a sound absorbing ousing for inclosing 80 the noisy parts of a re rigeratm apparatus and exposing to the atmosphere eat generating parts which do not make noise.

Further objects and advantages of the present invention will be apparent from the 8 following description, reference being had to the accompanying drawing, wherein a preferred form of the present invention isclear- 1y shown.

In the drawing:

Fig. 1 is a horizontal section of a refrigerating apparatus constructed in accordance with the invention; A

Fig. 2 is a vertical section of the apparatus shown in Fig. 1; and I Fig. 3 is a vertical section showing the compressor cooling device.

Referring to the drawing 10 designates any suitable base upon which is mounted a compressor 11 and a motor 12 which drives the compressor through a belt 13 and pulley wheels 14 and 15.- Connected to the compressor is a condenser 18 which receives compressed gaseous refrigerant from the compressor, cools and liquefies the refrigerant and discharges the refrigerant to a receiver or reservoir 19. If desired, for thesake of convenience the receiver may be mounted on a pair of brackets 20 supported in the base 10. The brackets 20 also support a housing 22 containing a switch for controlling the to motor. Sinceit is the motor, compressor and switch which make noise in operation, I-propose to avoid annoyance by preventing such noise from transmitting from the apparatus itself. This may be accomplished by .completely inclosing the nois parts of the apparatus in a housing w ich prevents the transmission of sound from the apparatus to distant points. As shown in the drawing this housing may include a 25 upon which 7 the apparatus is supported, and a housing proper consistingof side walls 26 and a cover 27. The base and housing may be made of an suitable material, .preferably some material "which absorbs sound waves and prevents the transmission of sound through the housing.

Since the motor, compressor and condenser all generate heat during 0 ration and since this heat must be remove I provide means so for dissipating to the outside atmosphere the heat generated. Since the condenser does not make noise this may be placed outside of the housing where it is cooled'by contact with the atmosphere, which cooling may be enhanced 86 by ci'rculatingair over the condenser in any desired manner.

Heat conducting members 30 are passed through one of the walls 26 of the housing. 7

, The inside ends of the heat conductors are in 90 the path of air circulated by the fan and the outside ends of the heat conductors dissi-- pate the heat to the atmosphere.

In order toincrease the" heat conducting capacity of the members so they are prefer- 96 ably formed as closed chambers containing a volatile liquid such as diethyl ether, pentane, or isopentane. The liquid runs to the lower end of the tubes where it absorbs heat from the air circulated by the fans and is evapo-- rated. The vapor rises in the" tubes to the cooled ends outside of the housing. The vapor is condensed outside of the housing by the atmospheric temperature and the condensed liquid flows back into the lower end of the tubes. Thus as long as heat is applied to the lower ends the liquid circulates and removes heat from the housing.

This arrangement is particularly advantageous in providing means for cooling the comressor and motor directly. A tube 31 has its lower and thermally attached to some part of the compressor to cooled, for example to the valve plate 82 ordinarily provided in com ressors for carrying the discharge valves.

Pre erably a hollow chamber 37 is provided in the valve plate 32 in any suitable manner and the tube or tubes 31 communicate with this chamber. This arrangement is shown in go the fragmentary vertical section view of the upper part of the compressor, Fig. 3. One manner of cooling the motor is to wrap a hollow jacket 38 about the field frame and connect it with a tube 39. It is of course to an be understood that the chamber 37 and jacket 38 contain a-quantity of'volatil'e liquid and like the tubes 30, the

tubes

31 and 39 conduct vaporto the-exterior of the housing where it condenses and returns to the chamber and 80 jacket. It is to be understood that other porconductin without dlsturbing the relation of the heat tions within the housing may be cooled in the same manner as shown with regard to the compressor and motor and that the condensing portionexterior 'of the housing may be readily increased if desired by increasing the volume of the condensing tubes outside the housing and fins 40 may be added.

In order to provide for the removing of the housing, the cover 27 is made removable from the side walls 26 and the tube '31 is passed through a slot 34 in the upper edge of the heat wall. To remove the housing transmitting members the cover is first reinoved, after which the tubes 31 and. 39 can be bent upwardl through slots formed in the side wall. A ter'that is done, the wall 26 can be removed. Preferably the housing is hermetically sealed to prevent noises created therein from being transmitted to the exterior. Therefore, the slots-in the wall 26 may be suitablyclosed as for example by rubber grommets 42 each having a groove which snugly embraces the opposite sides of the housing wall and each having an opening for. receiving the tube. The joint of the walls suc as solder.

While the form of embodiment of the invention as herein disclosed constitutes a pre- 'ferred form, it is to be understood that other forms-mi ht be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. Refrigerating apparatus comprising in combination a com ressor, means for driving the compressor, a ousin completely inclosing the compressor and riving means, and heat conducting members extending through the housing for transmitting to the outsi e atmosphere heatgenerated within the housing, and means for circulating the air confined within the housing over said heat conducting members.

--2. Refrigerating apparatus comprisin in combination a compressor, means for riving the compressor, a housing completely 1nclosing the compressor and driving means, and wheat 'conductin members extending throu h the housing %or transmitting to the outsi e atmosphere heat generated within the housing, one of said members being thermally connected to the compressor and means for circulating the air confined within the housing over said heat conducting member.

3. Refrigerating apparatus comprising in combination a compressor, means for driving the compressor,--a housing completely inclosing the compressor and driving means, and heat conductin members extending throu h-"the housing for transmitting to the outside atmosphere heat generated within the housing, said heat conducting members including closed containers for volatile liquid, and means for circulating air confinedwithin the housing over said heat conducting members.

4. Refrigerating apparatus comprising in combination a compressor, means for driving the compressor, a housing completely inclosing the compressor and driving means, and heat conducting members extending throu h the housing for transmitting to the outsitfe atmosphere heat enerated within the housing, said heat con ucting members including closed elongated containers for volatile'liquid, the end of each container in the housing being lower than the end outside the housing, and means for circulating air confined within the housing over said heat, conducting members.

5. Refrigerating apparatus comprising in combination a compressor, means for driving the compressor, a housing completely inclosing the compressor and driving means,

and heat conducting members extending through the housingfor transmitting to the outside atmosphere heat generated within the housing,said' heat conducting members ud n isl s d'. ch mbe s m nsm assen tile liquid, the end. of each chamher within. the housing being lower than the end outside the housing, means for circulating the air confined in the housing over the lower ends of the heat conducting members whereby the volatile liquid within the heat conducting members will be evaporated.

6. Refrigerating apparatus comprising in combination a compressor, means for driving the compressor, a housing completely inclosingthe compressor and driving means, and means for conducting to the atmosphere heat generated within the compressor including a container for volatile liquid thermally connected. to the compressor body,

means for conducting vapor evaporated within said container outside the houslng, means for condensing said vapor outside the housing and returning the liquid to the container.

7. Refrigerating apparatus comprising in combination a compressor, a motor for driving a compressor, a housing completely enclosing the compressor and motor, and heat conducting members extending through the housing for transmitting to the outside atmosphere heat generated within the housing, one of said members being thermally connected to the motor, and means for circu1ating the air confined within the housing over said membersa 4 8. Refrigerating apparatus comprising in combination a compressor, means for driving the compressor, said compressor having a cooling chamber therein, a housing completely enclosing the compressor and driving means, and means for conducting through said housing and dissipating to the atmosphere heat generated by the compres sor including a volatile fluid in said cooling chamber and a tube extending from said chamber through the housing for condensing the volatile fluid outside the housing and returning the liquidto the chamber,

In testimony whereof I hereto aflix my signature.

- HARRY B, HULL.