US1069840A - Refrigerating apparatus. - Google Patents

Description

MONARY P. ADAMS.

PPPRIGBRATING APPARATUS. `-APLIOATION FILED DEO. 5. 1911.

Patented Aug. 12, 1913.

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Application ed December 5, 1911. Serial No. 664,102.

To all whom t may concern.'

Be it known that I, MCNARY FQ ADAMS, a citizen of the United States, residing at Denrer, in the county of Denver and State of Colorado, haveinvented certain new and useful improvements in Refrigerating Apparatus, ot which the following is a specification, reference being had to the accompanying drawings.

This invention is an improved automatically operating refrigerating system for use on railway cars and also foruse in connection with a common house refrigerator, a cold storage room, or any other form of refrigerator or cooling chamber, the object of the invention being to provide a compact refrigerating apparatus which may be contained in a comparatively small chamber, admitting of its use on railway cars and in otherplaces zonvhere space is limited, and which,V when once started in operation, continues to oper# ate indefinitely and'is automatically controlled so as to adapt itself to variations of temperature in the refrigerating chamber and hence dispense with the services of an attendant.

rlhr invention consists in the construction, combination and arrangement of de'- vices hereinafter described and claimed.

ln the accompanying drawings: Figure 1 is a sectional view of a refrigerating car provided with my improved automatically operating refrigerating system, the storage'v battery and the condenser being indicated in section; Fig. 2 is a vertical sectional vie-w.

of the same on the plane indicated by the line. aa of Fig. 1; and, -F ig. 3- is a similar view of the same on the plane indicated by' the line b-b of Fig. 1. r

F or the purposes of this specification my improved automatically operating refrigerating lsystem is shown installed in a refrigerator' car 1, which comprises a refrigerating chamber2 and a chamber 3 in which the operating parts of the refrigerating system are installed, the said" chambers-being separated by a partition'wall 4 and the chamber 3 being of small capacity as compared with the refrigerating chamber 2,"the refrigerating apparatus, in accordance with j ,my invention, being compactly disposed and taking up only a lsmall portion of the space in the car.

The usual vexpansion or evaporating pipes 5 are shown in the upper portion of the rerigerating chamber 2, anl auxiliary amand preferably near the adjacent end of the car. The lower'end of the condensing coil is connected to the receiver' 9 as `at 13, and the pipe 14 leads to the upper end of the said condensing coil -from4 va compressor pump of the common rotary type, indicated at 15, the said pipe 14 being,r provided with av check valve, which is indicated at 16. A pipe 17 discharges-into the 4compressor' from the auxiliary receiver 6.

The operation of 'the refrigerating apparatus per se .will be readily understood by those skilled in the art to which my invention relates and need not be described. All these parts of the apparatus are located in the chamber 3. Also arranged in the said chamber is an electric motor 18 and a I storage battery 19. The driving pulley of the electric motor is connected to that of the compressor pump by means of an endless belt 20. An electric generator 21 is also provided, which is arranged under the bottom of the rcar and'is suitably connected to one of the car aXles to be driven thereby. The generator is connected in electric cir d cuit with the vstorage battery and also withl the electric motor by means of suitable conductors indicated at 2 2. Below the car is an air pipe 23 which is connected byva branch 24 to the bottom of the tank 12 of the condenser coil and this branch pipe includes a valve 25. Air is forced by this means to the bottom of the tank 12 and passes up through the water therein for the purpose of reducing its temperature, as will be understood. I also arrange in the refrigerating chamber a thermostat v26 which is hereindicated as a bar secured at one end on a suitable bracket or support 27 x and comprises members of different metals having different co-eficients of' expanslon so that the free, upper end of the thermostatic bar is adapted to move to a consideri able extent under `variations of temperature in the refrigerating chamber. Ialso ,arrange, in the chamber 3, anelectrlc switch 28, the terminals of which are included in the motor circuit. The movable element of this switch, which is here shown as a knife .29, is operated 'by-a rod 30 which is pivotally -connected to its upper end, as at 31. A rod 32 is directly pivotally connected to the upper end of the thermostatic bar as at 33 and is also pivotally connected to the rod as at 34. IVhen the temperature in the refrigerating chamber is as vlow as is desired the switch is kept open by the thermostat and hence' the motor and the compressor will remain inoperative. When, however, the temperature rises in the refrigerating chamber the thermostat acts to ciose the switch and thereby start the motor andV hence the refrigerating apparatus in operation. l v

It will be understood from the lforegoing that the operation of the apparatus is entirely automatic and that it does not require the services of an attendant.

When my automatically operating refrigerating system is in use on a car as here shown I also Aprovide the car with elecytric connections 35 whereby the motor may.

be supplied with4 current from any source of electric power, when the car is at a sta- /tion' or is held on a side track.' Wit-hin the scope of my invention, also, the generator may be driven byother means than by being connected to one of the car axles.

Having thus described my invention I claim: j

TheI combination with a refrigerating car,

lofvrefrigerating apparatus including a fiat `ammonia supply reservoir ext-ending longitudinally of and underneath said cooling tank, a cooling coil comprising superposed tlat convolutions disposed in said tank, a pipe connection from said reservoir opening through the bot-tom of said tank and connectedto said coil, an auxiliary ammo.- nia reservoir disposed near the top of the car, a U-shaped pipe disposed vertically between said auxiliary reservoir and said tank with the lowest point of the bight disposed near the car Hoor, one leg of said pipe being connected to said auxiliary reservoir, and the other leg having a horizont-al extension entering the open top of said tank and con- .a

nected to said coil, a compressor communieating with the bight of said pipe, an evaporating pipe extending from said auxiliary reservoir and disposed horizontally above said auxiliary reservoir, a reduced pipe connection between said evaporating pipe and said supply reservoir, and means for actuating said compressor.

IRENE E. YOUNG, R. R. RoLLINs.

In testimony whereof I hereunto aiix my

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