US1436445A - Refrigerating mechanism - Google Patents

Description

0. HORNER.

REFRIGERATING MECHANISM.

APPLICATION FILED JAN.13, \922.

1,436,445. t d Nov. 21, 1922.

4 SHEETS-SHEET I.

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0. HORNER.

REFRIGERATING MECHANISM.

APPLICATION FILED JAN. 13. 1922.'

1,436,445.- I Patented Nov. 21, 1922.

4 SHEETS-SHEET 2.

m A 2 2 @wmflfiz l 1 1 HI| j 0. HORNER.

REFRIGERATING MECHANISM.

APPLICATION FILED JAN.13. 1922.

1,436,445. 4 Patented Nov. 21, 1922.

4 SHEETSSHEET 3.

WIT/VL-SSES Patented Nov. 21, 192 2.

UNITED STATES onnrn Holman, or GREENVILLE, onto.

Rnrmonmirmo mno mmsm.

Application filed January 13, 1922. Serial No. 529,049.

Kn'other ob'ect is to provide novel means of freezing-ice with the apparatusincluding a combination expansion compartment.

Another object of'the invention is to combinle the expansion box with an expansion CO1 ox and ice tray Another object is'to' provide means of regulating the refrigerant from the'supply line to the combination expansion box and ice tracompartment by means of a vacuum contro led valve mounted on a base or platform entirely exposed to view enabling'one to operate the valve completely, it being free from the usualvalve housing orboxes which usually make such valves inaccessible for either the regulation or attention they may require from time to time.

It is the intention of the invention to im prove generally, and to enhance the utility of devices of this type to which the present invention appertains.

With the above and numerous other objects in view, which will appear as the'de- .scription proceeds, the invention resides in the combination and arrangement of parts,

and in the details of construction hereinafter described and claimed; it being understood that changes in the precise embodiment of the invention herein disclosed,can be made within the scope of what isclaimed without 'departingfrom the spirit of the invention. In the drawing:- a Figure 1 is a rear elevation of the device embodying my invention, 7 Figure 2 is a side elevation thereof, .Figure 3 is a fragmentarydetail view of the manifold used'in connection with the coil. v

Figure 4 is a lon itudinal section taken on the line 4-4 of Figure 3 looking in the direction of the arrow,

Figure 5.is an enlarged detailed fragmentary view of the bottom end of the thermostat coil.

Figure 6 through the vacuum controlled-valve.

Figure 7 is a section taken on the line 7.-7 of Figure 6 looking in the direction of thearrow, and 1 a Figure 81s aside elevation of the com is a vertical section taken bined expansion and ice tray box, 'a portion thereof being shown: in I section.

: Referring to the drawing in detail it will be seen that assen bledviews have been shownin Figures 1 and 2 wherein the combinedexpansion box and ice tray compartment is shown at the bottom of the" apparatus and. is fed with the refrigerant by the pipe 17 leading'from the vacuum controlled valve6.- The refrigerant is introduced into the coils through, the pressure or supply line 15 A vacuum being pumped intothe coil assembly produces a contraction on the diaphragm 5 and in this manner operates the vacuum controlled valve, opening the same by means of a lever 6 which is connected to the yoke 13 mounted on the needle valve stem 10. This lever is pivoted on the rod8 extending from the cap of the valve 6 producing a fulcrum therefor. When this valve is opened by the vacuum, the refrigerant, which is in the form of liquid, passes through the small opening of the vacuum controlled valve into the expansion line 17 and thence into the expansion box 2 and is here further expanded into gas. The constructionof the expansion box is shown to advantage in Figure 8 and is provided with an ice tra-y compartment 2* carried interiorly thereof. and spaced therefrom so that as the refrigerant expands it will absorb heat in I the compartment 2 and the ice. formed therein will be very dry since the temperature therein would probably be approximately ten to twelve degrees above zero (Fahrenheit). The expansion coil system 1 is incommunication with theexpansion box 2 as is shown also in Figure 8 so that the refrigerant may continue its expansion therein and from experience I have found that the temperature of a compartment containing the coils would be a proximately forty degrees above zero Fahrenheit).

When the machine, that is the compressor,

(not shown) stops operating, the weight 7 causes the lever 6' to close the valve.

As the gas rises in the expansion coil sysheavy weight.

' tern its cold is diminished by the heat it has absorbed and it is returned to the compressor and there recompressed and condensed into liquid in a manner well understood in the art thereby completing onefull cycle. it being ready again to go through the processes follow plates 12. The diaphragm 11 being held securedly between the valve body flanges 9 and the valve cap 8 to prevent any.

leak of gas during periods of time when the machine is idle,' and to provide easy and free movement of the needle point and also to omit-the use of packing ofany kind around the needle point. p is not in operation the liquid Which-has not been-fully expanded into gas continues to expand, thereby producing-cold for-some time after the machine has stopped, this also creating a pressure in the'expansion coil which in turn expands the sylphon or diaphragm 5 which is'in communication therewith through the pipe lGthereby raising lever 6 at the top of the diaphragm 5 thus closing down the needle valve seouredly. This method enables the valve 'to function properly and does not require abundlesome The pipe 18 leads to a compression. i

p The thermostat coil 1 is embodied. in the expansion coil in such a manner as to make the Whole a compact assembly producing uniformity of design which will be an advantage in the rapid and economical production of these machines; also lessen the need of experienced men to install and charge the thermostat.

The purpose of the thermostat coil is clearlyunderstood by referring to Figures 1, 2, 3, 4 and 5. The lower end of the thermostat coil is sealed or closed in any desired manner as at 22 and its upper end is connected to the manifold 3 in a blind hole 30 communicating with the indenture 31 in.

which is situated the valve seat 32. The needle valve' l9 is threadedly mounted so as to engage and disengage with the valve seat 32 and suitable packing 23 is provided therefor. The'head 23' of the needle valve 19 is formed so as to befitted with a tool when it is desired to manipulate the valve. A cap 20 protects the same from being tampered withaccidentally or by unauthorized persons. On the thermostat coil is located a boss suitably secured to which is attached a tube 21 which leads to an automatic diaphragm controlling device (not shown) such as are now commonly in use.

To charge .the thermostat coil 1 after the refrigerating coil has been charged with the refrigerant and the machine allowed to re lvhen theimachine main idle for a period of time, the pressure in the expansion coil equalizeswith that contained in the machine proper (not shown). Then by removing the "alve cap 20 by means of a socket wrench or any other suitable im plement the square end of the needle valve is engaged and actuated for opening the same .and allowing the refrigerant to flow from the expansioncoil 1 into the thermostat coil 1 situated at the front of the expansion coil preferably and being the first coil in the same. The needle valve 19 is-then closed and the valve cap 20 replaced thereby sealing the thermostat coil and preventing accidental or otherwise interference therewith. To set the thermostat the'machine. is startedallowing it to operate until the temperature in thecoil compartment reaches thedesired temperature and then by adjusting the regulating spring on controls (not shown) until the'control switch cuts out. and an automaticthermostatic control is theresult. The pressure withinthe thermostat coil 1" will always be approximatelythesameas the pressure withinthe expansion coil 1. The

pressure of this thermostat coil will there fore allow of expansion and contraction of the sylphon or diaphragm of the automatic.

diaphragm inaccordaucewith the temperature in and about the expansion coil so that the controlling device in turn will operate the switch in the circuit of the electric motive power for operation of the cOmpressor.

Having thus described my invention what I claim as new is: 1

1.- In combinatioma coil including a plurality of sections, an expansion box con'imunicating with some of said coil sections. a manifold in communication with said sections. and a valve disposed between the section which is not in communication with the expansion box and the manifold in the manner and for the purpose specified.

- 2. In combination. a coil including a plurality otsections. an expansion box communicating with thesections ot' said coil. a manifold in communication with said sections. a thermostatic pipe having one. end closed and its bther end conununicating with said manifolch'and a valve disposed between the thermostatic pipe and the manifold.

3. In combination. a coil including a pluralityof sections. an expansion box communicating with 'the sections of said "coil; a manifoldv in communication withsaid'seetions, a thermostatic pipe similar in appearance' to the sections ofsaid .coil having its lower end mounted on said expansion box but not in communication therewith and its upper end communicating with said lnani fold. and a valve disposed between the thermostatic pipe and the manifold.

In testimony whereof I atiix mv signature.

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