US795015A

US795015A - Refrigerating apparatus.

Info

Publication number: US795015A
Authority: US
Inventors: Richard Whitaker
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-03-28
Filing date: 1904-03-28
Publication date: 1905-07-18
Anticipated expiration: 1922-07-18

Description

PATENTED JULY 18, 1905. R. WHITAKER.

REPRIGBRATING APPARATUS.

APPLICATION FILED MAR-28,1904.

4SHEETS-SHEET 1.

Witnesses Inventor No.795,015. PATENTED JULY 18, 1905. R. WHITAKER. REFRIGERATING APPARATUS.

APPLICATION FILED MAR .28,1904.

4 SHEETS-SHEET 2.

W A Wm. WM! Wmnnuuc f a Atlorueys PATENTED JULY 18, 1905 4 SHEETS-SHBBT 3.

In Ven tor Attorneys.

R. WHITAKER.

APPLICATION rum) MAR.2B,1904.

\4fi/////////////////// A REFRIGERATING APPARATUS.

ANNEVI a mum co. nmuLmloonAnm uammuc Witnesses PATBNTED JULY 18, 1905.

R. WHITAKER. REFRIGERATING APPARATUS.

APPL I OATION TILED MAR. 28, 1904- SHBETB-SHEBT 4.

Inventor Attorneys.

No. 795,015. Patented July 18, 1905.

. UNITED STATES PATENT Orricn.

RICHARD WVHITAKER, OF NEW BRUNSWICK, NEW JERSEY, ASSIGNOR OF T'WO-THIRDS TO ROBERT W. JOHNSON AND JAMES W. JOHNSON, OF NEWV BRUNSWICK, NEW JERSEY.

REFRIGERATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 795,015, dated July 18, 1905. Application filed March 28, 1904. Serial No. 200,236.

To aZZ whom it may concern: upon the lower face of the bunker and drip Be it known that I, RIoHARD WHITAKER, a into the contents of the cooling-chamber 3. o citizen of the United States,residing in the A gutter 12 serves to convey away moisture city of New Brunswick, county of Middlesex, which may form on the upper surface of the 5 and State of New Jersey, have invented a cer bunker, and this gutter connects with a pipe tain new and useful Improvement in Refrig- 13 outside of the refrigerating-chamber.

crating Apparatus, of which the following is A partition 14, extending from the bottom 5 5 a specification. up to within a short distance of the top of the The present invention relates to improverefrigeratingchamber and arranged a short 0 ments in refrigerating apparatus of that type distance from the wall of the same, forms a with which a compression-machine is used. passage or duct 15 to convey ascending our- The objects of the invention are to prorents of warm air from the cooling-chamber 3 6o duce a device which will automatically keep to the refrigerating-chamber. A second verthe temperature of the cooling-chamber con tical partition 16, arranged below the bunker,

1 5 stant, and which temperature will be conforms a duct 17 for the descending currents of trolled within very narrow limits. cold air, the air circulating within the boX 1,

Further objects are to produce a device the ascending currents passing upward which will be simple and cheap and which through the duct 15, and after being chilled will not easily get out of order. by contact with the refrigerating means 6 20 I attain these objects by the mechanism will pass down through the .duct 17 and reillustrated in the accompanying drawings, turn to the cooling-chamber. The partition in which acts as a support for one end of the bunker Figure 1 is an end view of an apparatus and also as the support of the temperaturecomprising my invention with the door recontrolling mechanism about to be de- 2 5 moved. Fig. 1 2 is a longitudinal section scribed. In order to control the currents of taken on the lines 2 2 of Fig. 1; Fig. 3, a air, a damper 18 is provided within the coldtransverse section taken on the line 3 3 of air duct 17, and this damper is preferably op- Fig. 2. Fig. 4 is a side view of the motor erated by automatic means, which will be and operating connections, and Fig. 5 a top described.

0 view of the same, the last two views being The boX 1 is provided with an extensiondrawn upon a larger scale than the others. chamber 19, within which a refrigerating ap- In all of the several views like parts are inparatus 20 is located. A suitable form of 8c dicated by identical numerals of reference. apparatus is similar to that illustrated in my In carrying out my invention I provide a application for patent, Serial No. 188,611,

3 5 box 1, which is divided into two parts by a filed January 11, 1904; but the means for auhorizontal partition 2, so as to form a coolingtomatically regulating the amount of eX- chamber 3 and a refrigerating-chamber 4. panded gas in such apparatus as described in The cooling-chamber 3 is provided with the that application may be dispensed with. ordinary door 5, and the refrigerating-cham- In the present invention the refrigerating 4o ber 4 is provided with refrigerating means 6, apparatus is intended to be operated continuthese means in the illustrated embodiment of ously for part of the time and then. stopped, the invention consisting of a coil 7, arranged the accumulated cold within the brine-tank within a tank 8 of brine. 8 serving to keep the cooling-chamber 3 at Below the refrigerating means is an inthe proper temperature while the refrigerat- 5 clined false bottom 10, separated from the ing mechanismQ-O is not running. Itis therelower wall of the bunker by a lining of minfore not essential to employ the thermostat eral wool 11 or other non-conducting mateconnection as described in that application. 5 rial, so that moisture will not be condensed A connection for preventing excessive back pressure, as described in my application for patent before referredto, may be employed. This connection is illustrated in Fig. 1 and consists of a diaphragm 21, connected to the expansion end of the coil 7, so as to be acted upon by varying pressures within the same.

This diaphragm connects to a bell-crank lever 22, which by means of a link 23 is connected to and operates the expansion-valve 24. The lever-arm of the latter valve is provided with a weight 25 or other means for opening it when the pressure on the diaphragm is sulhciently low to permit this to e done.

The damper 18 is secured to a shaft 26, which passes through bearings in the walls of the chamber 3 and extends into the chamber 19, where it is provided with a lever 27 This lever 27 may be connected to the shaft 26 by means of a set-screw, whereby adjustment may be secured. The lever 27 is connected to and operated by an intermittentlymoving motor 28, the movements of which are controlled by a thermostat. This motor is preferably a water-motor and may be operated'by Water from the same system which is used to circulate through the cooler and compressor. In Fig. 1 a pipe 29 supplies water to the motor, while the pipe 30 withdraws it.

The water-motor is shown in detail in Figs. 4 and 5. It consists, preferably, of a body or frame 31 preferably made of castiron and in the form of a tub, the drain-pipe 30 being connected to the bottom thereof. This body is provided with. lugs 32, by means of which it maybe attached to a wall of the chamber 19. The sides of the body at the center are elevated at 33 and form bearings for the shaft '34. Pivoted upon this shaft are the levers 35, and between these levers are pivoted the

buckets

36 and 37. The le- Vers 35 are bent inward at one end and are connected. together at 38 by means of a bolt 39, to which. is pivoted a link 40, which link is connected at the other end to the lever 27. The proportions of the parts described are such that upon the levers 35 being oscillated upon the shaft 34, alternately depressing and elevating the

buckets

36 and 37, the damper 18 will be opened and closed and moved from the positions shown in full lines to that shown in broken lines. The buckets are alternately elevated and depressed by means of a stream of water passing through the pipe 29, which stream. may be diverted from one bucket to the other, the buckets being provided at or adjacent to their bottoms with outlets 41, such outlets being smaller than the pipe 29, so that one or the other of the buckets will be filled, and so long as the water runs into that bucket it will stay in the depressed position. The mechanism for diverting the stream of water comprises a double spout 42, having a centrally-dividing ledge 43. This spout is preferably of cast metal and is formed with legs 44, which are bolted or otherwise secured to the elevated portions 38 of the body 21, thus forming a rigid structure. The sides of the spout 42 have centrally-elevated portions 45, between which is pivoted a trough 46. This trough may be oscillated from one side to the other, so that its dischargeopening 47 will be at one side or the other of the centrally-disposed ledge 43. The trough is so balanced upon its supportin -shaft that it may be oscillated upon its ax le 48 by the expenditure of very littlepower. The trough is oscillated, by means of a thermostat or device, for accomplishing a similar purpose located within the coolingchamber 3.

The thermostat 49 is of any type, that illustrated in my application for patent before referred to being one form. It is attached, preferably, to the partition 16, by means of which it is supported. To the moving element of the thermostat is connected a link 50, which passes through an opening in the walls of the box and enters the chamber 19, where it connects with one arm 51 of a bellcrank lever 52, the other arm 53 being connected to the trough 46 by a link 54, so that the trough will be oscillated by the expan-. sion and contraction of the thermostat. The bell-crank lever is supported from the wall of the chamber 19 by means of brackets 55.

The operationof the device is as follows:

The refrigerating apparatus being started,

the brine within the tank 8 will be lowered in temperature. The warm air ascending from the cooling-chamber 3 through the passage 15 will pass around the tank and be lowered in temperature. The cold air will descend through the passage 17 and enter the coolingchamber 3, the circulation of air continuing. In starting the apparatus the motor will be in the position shown in Fig. 4, the bucket 37 depressed for the reason that the thermostat will be in an expanded condition, and the trough 46 moved to the right in the position shown. The bucket 37 will therefore be full of Water and will remain so until the temperature in the chamber 3 becomes-sufficiently low to cause the thermostat by contracting to move the trough 46 to the left and divert the stream of water into the bucket 36. i As soon as the latter overbalances the bucket 37 the damper 18 will be moved to the closed position, thus interrupting the current of cold air. When the temperature rises within the chamber 3 sufficiently to move the thermostat and oscillate the trough 46, the bucket 36 will be filled, and after its bucket has been sufficiently emptied to be overbalanced by the bucket 36 the two will change relative positions and the damper Will become opened. This alternating action will keep up so long as the stream of water continues through the pipe 29 and the temperature within the chamber 3 varies above or below the fixed normal. After the cooling apparatus has run a certain timefor instance, in practice after it has run twelve hours it may be stopped. At this time the temperature of the brine within the tank 8 may be as low as Zero, Fahrenheit, while the temperature of the cooling-chamber 3 will be just above freezing. A supply of cold will therefore be stored which will serve to cool the chamber 3 during the time that the refrigerating apparatus is not running; but it is of course to be understood that the watermotor will continue to run and the damper will be alternately opened and closed, so that the temperature within the cooling-chamber will be substantially constant.

It is to be understood that the refrigerating-chamber may be supplied by refrigerant from a source other than the mechanism attached to the box 1, such being simply shown for the purpose of illustration.

Having now described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a refrigerating apparatus, the combination with a box, containing a coolingchamber and a refrigerating-chamber, of flues connecting the two, and a damper for controlling the circulation through flues and chambers, and a motor outside of the box and means connecting the motor and the damper, and a thermostat within the cooling-chamber and means passing through the Walls of the box and connecting the thermostat and the motor for controlling the movements of the latter.

2. In a refrigerating apparatus, the combination with a box, containing a coolingchamber and a refrigerating-chamber, of fines connecting the two, and a damper for controlling the circulation through fiues and chambers, a shaft connected to the damper and extending outside of the box, and a motor outside of the box and connected to the shaft, and a thermostat within the cooling chamber for controlling the movements of the motor.

3. In a refrigerating apparatus, the combination with a box containing a coolingchamber and a refrigerating-chamber, of flues connecting the two, and a damper for controlling the circulation through flues and chambers, a shaft connected with the damper and extending outside of the box, a motor outside of the box connected to the shaft, a thermostat within the cooling-chamber, and connected to a bell-crank lever outside of the box, and connections between the lever and motor for controlling the latter.

This specification signed and witnessed this th day of March, 1904.

RICHARD WHITAKER. Witnesses:

T. G. PHINNY, JAMES T. TOMNEY.