US1377742A

US1377742A - Pasteurizer

Info

Publication number: US1377742A
Application number: US179027A
Authority: US
Inventors: Kirk K Wright
Original assignee: RALPH G WRIGHT
Current assignee: RALPH G WRIGHT
Priority date: 1917-07-06
Filing date: 1917-07-06
Publication date: 1921-05-10
Anticipated expiration: 1938-05-10

Description

K. K. WRIGHT. PASTEUR|ZER. APPL-NATION FILED JULY 6.1917.

Patented May 10,11921.

2 SHEETSSHEET I.

K. K; WEIGHT. PASTEURIZER.

APPLICATION FILED JULY 6, I9I7.

atented May MI5 1921'.

2 SHEES-SHEET 2.

[NVE/VTM? f fw* fyi-f 577%@ KIRK K. WRIGHT, OF BUFFALO, NEW" YQRK, ASSIGNOR OF ONE-HALF T0 RALPH G WRIGHT, 0F BUFFALO, NEW YRK. l

PASTEURIZER.

Specification of Letters Patent.

Patented May 10, 1921.

To alt 'whom t may concern.'

Be it known that l, Kinn K. VRIGHT, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful improvement in Fasteurizers, of which the following is a specilication.

This invention relates to pasteurizers, and more particularly to apparatus of the kind consisting of a receptacle adapted to receive the articles to be pasteurized and into which the pasteurizing medium is admitted.

The objects of this invention are to provide a pasteurizer of this kind with means of improved construction for producing a circulation of the pasteurizing medium within the receptacle to obtain a uniform temperature in all parts of the receptacle; also to provide the front wall of the pasteurizer with a removable portion of improved construction which can be readily placed into and out of operative position; also to improve the construction of devices of this kind in other respects hereinafter specified.

In the accompanying drawings:

Figure l is a perspective view of a pasteurizer embodying the invention.

Fig. 2 is a longitudinal sectional elevation thereof, on an enlarged scale, on line 2 2, Fig. 4.

Fig. 3 is a fragmentary elevation, on a still larger scale, of means embodying the invention for producing a circulation of the pasteurizing medium in the receptacle.

Fig. 4C is a transverse sectional elevation on line 4--4, Fig. 2.

Fig. 5 is a fragmentary front elevation, on an enlarged scale, of the pasteurizer showing means embodying the invention for closing the pasteurizer receptacle.

Figs. 6 and 7 are fragmentary transverse sectional elevations thereof showing respectively the closed and open positions of the receptacle closing means.

A represents a box or receptacle in which the articles to be pasteurized are placed, and which includes a front wall a, a hinged cover or lid a which may be opened for placing articles to be pasteurized into the receptacle and removing, the same therefrom. The receptacle is provided with the usual slatted floor a2 on which the articles B to be pasteurized are supported. The articles B shown in the drawings are crates containing bottles of milk but it is understood that the apparatus is not limited to be used only in pasteurizing crates of bottled milk but can be used for pasteurizing other articles. llhe walls of the box may be made of any suitable material, being preferably made with an outer layer or part C, an intermediate partition c of insulating material, and an inner lining or wall c. A receptacle of any other kind may be employed for this purpose. I

ln a pasteurizer of this kind, steam is generally employed to heat the interior of the receptacle to the desired temperature, and after tli'e .articles have been subjected to the pasteurizing temperature of the steam for the desired period of time, water is passed into the pasteurizer for cooling the articles before removing the same from the pasteurizer. I n the construction shown the steam is admitted into the box A. of the pasteurizer by means of a steam pipe D which enters the receptacle and extends lengthwise in the upper portion thereof, and which is provided with any desired number of branch pipes Z extending downwardly adjacent to the rear wall of the receptacle and connected with a number of discharge pipes c3 having discharge openings arranged below the floor a2. The cooling water may be admitted to the pipes d by means of a water pipe F extending through the top wall of the receptacle and extending lengthwise of the receptacle adjacent to ithe rear wall thereof and having branch pipes e connecting with the branch pipes (Z to admit the water to the discharge pipes d. rIhe flow of steam and water in the pipes D and E may be controlled by any suitable means, `such as valves Z2 c2 arranged in the steam and water pipes outside of the receptacle. lil represents an overflow pipe through which the water passes out of the receptacle vwhen the sameis filled above the desired level. All of these parts have heretofore been used in pasteurizers and of themselves constitute no pait of this invention.

it has been found that when steam is admitted to the pasteurizer receptacle, the temperature within the receptacle is not uniform in all parts thereof until the steam i has been turned on for a considerable length of time, so that all of the milk bottles in the receptacle do not receive the saine treatment. ln order to avoid this defect in pasteurizers as heretofore constructed, means are provided for causing a circulation of the air, steam7 or other pasteurizing medium within the receptacle. In the construction shown for this purpose, a circulating device or ejector F is provided in each of the branch pipes Z in the upper portion of the receptacle A. Each ejector has a housing provided with inlet openings f for the air and steam in the upper portion of the receptacle, and a steam nozzle f connected with the steam pipe D. The discharge end of the ejector F is connected with the pipe cl. By means of this construction when a jet of steam is blown through the nozzle f into the ejector F, air and steam from the upper portion of the pasteurizer receptacle are drawn in through 'the openings 7 and pass with the steam entering through the nozzle f through the pipes d and CZ to the lower portion of the 'receptacle. This produces a circulation' of Ithe pasteurizing medium within the receptacle and insures a uniform temperature in all parts of the receptacle. The ejectors F do not interfere with the passing of water into the receptacle since no harm is done if the water passes through the ejectors F.

Means are preferably provided for removing a part of the front wall of the receptacle to permit the articles to be pasteur- Vized to be more readily placed into or removed from the receptacle, and for readily securing the removable portion in its operative position in the receptacle. In the construction shdwn for this purpose, the front wall is provided with a portion or section G, which may be removed fromits operative position in which it forms substantially a continuation of the front wall of the receptacle, to a position in which it does not interfere with the placing of the articles to be pasteurized into the receptacle, or removing the same therefrom. The removable section Gr of the front wall of the receptacle is preferably made of the same material as the body portion of the box and is provided at its edges with pads or packing strips g which insure a tight closing of the receptacle. The upper edge of the removable section G is preferably made to form a tight joint with the front edge of the lid va of the receptacle.

The removable section G is slidably arranged on rods or links I-I which are pivotally secured on brackets 7L secured on the front wall of the receptacle and which pass through holes or slots formed in brackets it ft2 4secured on the removable section G, so as to permit the section G to move lengthwise of the rods or links H. The outer ends of the rods or links II are preferably provided with suitable means for clamping the lid or cover a of the receptacle in its closed position. In the construction shown for this purpose, cam levers I are provided at the outer ends of the links and are adapted to engage bearing straps or bars t' secured on the lid a so that when the cam levers are moved into operative or clamping position, the lid will be drawn tightly against the upper edge of the removable section G, and will press the removable section firmly into engagement with the wall a. Then the pressure of the cam levers is released, the links or members H may be swung to the position shown in Fig. 7 in 'which the removable section drops below the upper edge of the wall a, so that case of milk bottles may be placed on the upper edge of the front wall a without resting on or damaging the removable section u, as would be the case if this section were hinged on the front wall or otherwise supported 'near the upper edge thereof.

The pasteurizer embodying the improvements described is thoroughly efficient in operation since it insures a uniform temperature in all parts of 'the pasteurizer 'receptacle so that all of the articles to be pasteurized subjected to the same temperature. In order to secure a uniform distribution of the steam or other pasteurizing mediumV in the lower portion of the receptacle, a small quantity of water is preferably left in the bottom of the receptacle7 through which the mixture of steam and air or other Huid from the upper portion of the receptacle is passed. The removable portion of the front wall of the pasteurizer receptacle greatly facilitites the placing of the crates into the pasteurizer and the removal of the same, since it is desirable to make the pasteurizer of sufficient height to accommodate three tiers of crates, and some ice if the same is to be used for cooling the milk after pasteurizing. This height would make it awkward to remove the crates if a portion of the front wall were not made removable I claim as my invention:

l. A pasteurizer including a receptacle adapted to contain the articlesV t0 be pasteurized, a pipe for admitting steamto the bottom of said receptacle, and `an ejectorin said pipe arranged in the upper portion of said receptacle, said ejector mixing the incoming 'steam with air and steam drawn into the ejector from the upper portion of the receptacle and' causing the mixture to be discharged into the bottom of said receptacle.

2. A pasteurizer including a receptacle Vadapted to contain the articles to be pasteurized, a pipe for admitting steam to the bottom of said receptacle, and a mixing device in said pipe adapted to mix incoming steam with steam 'and air from said receptacle, said mixing device including inlet openings arranged adjacent to the upper portion of said receptacle through which air and steam in said receptacle is drawn into said mixing device and passed with the incoming steam to the bottom of said receptacle.

3. A pasteurizer including a receptacle adapted to contain the articles to be pasteurized, a pipe for admitting steam to said receptacle, a plurality of distributing pipes connected with said admission pipe and having discharge openings arranged at intervals adjacent to the bottom of said receptacle, ejectors in each of said distributing pipes arranged in the upper part of said receptacle and having inlet openings for the steam and air in said receptacle whereby the steam blown into said receptacle is mixed with the air and steam from the upper part of said receptacle and is discharged into the bottom of said receptacle.

4. A pasteurizer including a receptacle adapted to contain the articles to be pasteurized, a pipe for admitting steamto the bottom of said receptacle, and an ejector in said pipe arranged in the upper portion of said receptacle, said ejector mixing the incoming steam with air and steam drawn into the ejector from the upper portion of the receptacle and causing the mixture to be discharged into the bottom of said receptacle, and a water inlet pipe connected with said admission pipe for admitting water to said receptacle.

5. A pasteurizer including a receptacle adapted to receive the articles to be pasteurized and the pasteurizing medium, means in said receptacle for introducing the pasteurizing medium, said receptacle having upright side walls, a removable portion in the upper end of one of said side walls, rods pivoted on said side walls, and a sliding connection between said rods and said removable portion.

6. A pasteurizer including a receptacle adapted to receive the articles to be pasteurized and the pasteurizing medium, means in said receptacle for introducing the pasteurizing medium, said receptacle havlng upright side walls, a removable portion in the upper end of one of said side walls,

' wall and on which said removable portion is slidably mounted, and means on the outer ends of said rods adapted to engage said cover for pressing the same against said removable portion of said side wall.

8. A pasteurizer including a receptacle adapted to receive the articles to be pasteurized and the pasteurizing medium, means in said receptacle for introducing the pasteurizing medium, said receptacle having upright side walls, and a cover, a removable portion at the upper end of one of said side walls, a plurality of pairs of parallel rods connected at their ends, each pair of rods being pivoted at one end on said wall, a sliding connection between said rods and said removable portion whereby the removable portion can slide lengthwise of said rods, and a cam lever on the outer ends of each pair of rods and adapted to .engage said cover to press the same against said removable portion and thereby press said removable portion against said wall.

Witness my hand, this 11th day of June,

KIRK K. WRIGHT. Witnesses F. M. PRATT, B. HANNERKAM.