JPH0375135B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] This invention relates to a method for producing an ice cream product with excellent dimensional stability. [Prior Art] In general, ice cream products such as ice cream, ice milk, and lacto ice cream are produced in a mix tank 1 using an ice cream mix containing milk ingredients, sugars, and stabilizers as the main ingredients, as shown in Figure 3.
This is stored in a continuous freezer 4 via a pipe, frozen together with air bubbles, and continuously extruded. This is introduced into a molding machine 7 through an extrudate supply pipe 6, and in this molding machine 7. The extruded product is manufactured by continuously extruding the extruded product into a rectangular cross-sectional shape through a die, etc., and cutting the resulting molded product with a constant-speed cutter (not shown) that operates at regular time intervals. ing. In FIG. 3, 2 is a valve, 3 is a mix transfer pump, and 5 is an air supply pipe. [Problems to be Solved by the Invention] When producing ice cream products using the above-mentioned production apparatus, the extrusion pressure of the extruded product of the continuous freezer 4 depends on the supply amount of ice cream mix and the supply amount of air. As a result, the amount of extrudate flowing through the extrudate supply pipe 6 fluctuates, resulting in variations in the length l (see Figure 4) of the ice cream product 7a obtained, making it difficult to obtain a product with stable dimensions. The problem is that you can't get it. The present invention was made in view of the above circumstances, and an object of the present invention is to provide a method for continuously manufacturing ice cream products without causing variations in dimensions, etc. [Means for Solving the Problems] In order to achieve the above object, the method for producing an ice cream product of the present invention involves producing an ice cream mix containing milk components, sugars, and stabilizers as main components in a continuous freezer. In the production method of ice cream products, the ice cream product is obtained by freezing the frozen product with fine air bubbles, extruding it continuously, applying the extruded product to a molding machine to form it into a predetermined shape, and then cutting it into a predetermined length with a constant speed cutter. , a combination of a constant pressure hopper and a positive displacement pump is installed between the continuous freezer and the molding machine, and the extruded product extruded from the continuous freezer is supplied to the constant pressure hopper to reduce the extrusion pressure applied by the continuous freezer. equalize,
The liquid is then supplied to a positive displacement pump. [Operation] That is, the present invention provides a combination of a constant pressure hopper and a positive displacement pump between a continuous freezer and a molding machine, temporarily stores the extruded product extruded from the continuous freezer in the constant pressure hopper, and The extrusion pressure applied by the freezer is equalized, then supplied to a positive displacement pump, which sends a fixed amount to the molding machine, so a constant speed cutter is used to cut it into a predetermined length. Improves dimensional stability when cutting. Next, examples will be described. Example 1 FIG. 1 shows an apparatus used in this invention.
That is, in this apparatus, a constant pressure hopper 8 and a positive displacement pump 9 are provided between the continuous freezer 4 and the molding machine 7 in FIG. The constant pressure hopper 8 is provided with a rotor 8a therein, and the rotor 8a is rotated at a constant speed by the action of a motor M to supply the extrudate to a positive displacement pump 9. As the positive displacement pump 9, any one of a rotary pump, a gear pump, a monopump, a peristaltic pump, etc. is used. When producing an ice cream product using the pump 9 described above, it is carried out, for example, as follows.
That is, fat content 8% by weight (hereinafter abbreviated as "%"),
200ml ice cream mix with 35% total solids
/Hr from mix tank 1 to continuous freezer 4. At the same time, air is supplied from the air supply pipe 5 at a rate of 200/hr, and the continuous freezer 4 mixes the two vigorously to mix air bubbles into the ice cream mixture. As a result, an extruded product with 100% overrun (increase in volume (%) with respect to the original ice cream mass) is supplied to the molding device 7, and is continuously extruded from a molding die with a cross section of 40 mm square. The ice cream product is obtained by cutting with a constant speed cutter (not shown) set to drive so that the length is 30 mm. Embodiment 2 FIG. 2 shows another apparatus for use in the present invention. This device has an additive supply pipe 12 connected to its upper part as a constant pressure hopper 8, and is equipped with a pressure sensor 10 at the outlet.The detected pressure of this pressure sensor 10 is input to a pressure controller 11, and the input signal is Rotor motor M
The drive speed of the motor can be changed. Other than that, the device is the same as the device shown in FIG.
More specifically, the additive supply pipe 12
From there, fruit pieces and the like are supplied and mixed into the ice cream mix. Further, the pressure sensor 10 detects the pressure at the outlet of the constant pressure hopper 8, and sends a detection signal to the pressure controller 11 so as to change the rotational speed of the rotor 8a correspondingly. It is designed to control the motor M of. Thereby, the pressure of the extruded product sent out from the outlet of the constant pressure hopper 8 is always kept constant. When producing fruit-containing ice cream products using this apparatus, it is carried out as follows. In other words, ice cream mixture is supplied from the mixture tank 1 to the continuous freezer at 160/hr, and air is supplied from the air supply pipe 5 at 160/hr, resulting in an overrun of 100%.
The extruded product is extruded at a rate of 320/Hr, and at this time, mandarin orange pulp is supplied from the additive supply pipe 12 at a rate of 80/Hr, and the extruded product with a total amount of 400/Hr is supplied to the positive displacement pump 9 to make an ice cream product. obtain. [Comparative Example] An ice cream product was made using the apparatus shown in FIG. 3 and supplying the same raw materials and air as used in the apparatus shown in FIG. The table below shows a comparison of the extrusion speed of the extruded product from the continuous freezer and the length l of the obtained ice cream product in Examples 1 and 2 and Comparative Example. The table shows 30 pieces of data.

〔Effect of the invention〕

As described above, the present invention provides a combination of a constant pressure hopper and a positive displacement pump between a continuous freezer and a molding machine, and stores the extruded product extruded from the continuous freezer in the constant pressure hopper. Since the extrusion pressure applied by the molding machine is equalized and supplied to the positive displacement pump, the extruded product is always supplied to the molding machine with uniform pressure. As a result, the dimensions of the ice cream product obtained through the molding machine become stable.

[Brief explanation of drawings]

Fig. 1 is a block diagram of one example of the apparatus used in the present invention, Fig. 2 is a block diagram of another example, Fig. 3 is a block diagram of a conventional ice cream product manufacturing apparatus, and Fig. 4 is a block diagram of an example of the apparatus used in the present invention. FIG. 1... Mix tank, 4... Continuous freezer, 7... Molding machine, 8... Constant pressure hopper, 9...
Positive displacement pump.

Claims (1)

[Scope of Claims] 1. An ice cream mix containing milk components, sugars, and stabilizers as main components is placed in a continuous freezer, frozen together with air bubbles, and continuously extruded, and this extruded product is placed in a molding machine. In the manufacturing method of ice cream products, the ice cream product is formed into a predetermined shape using a constant speed cutter and then cut into a predetermined length using a constant speed cutter. An ice cream characterized in that the extruded product extruded from a continuous freezer is supplied to a constant pressure hopper to equalize the extrusion pressure applied by the continuous freezer, and then supplied to a positive displacement pump. Product manufacturing method. 2. The constant pressure hopper has a built-in mechanism for transferring contents toward the outlet, and is also equipped with a pressure sensor at the outlet, and controls the drive state of the transfer mechanism in response to the pressure detected by the pressure sensor, A method for producing an ice cream product according to claim 1, wherein the pressure is kept constant. 3. The method for producing an ice cream product according to claim 1 or 2, wherein an additive supply line is connected to the upper part of the constant pressure hopper.