RU2557170C2 - Energy-saving plant for obtaining ice water at farms and milk-receiving stations - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to cooling of agricultural products. The proposed energy-saving plant for obtaining ice water at farms and milk-receiving stations includes cold accumulator 1, heat exchanger 2, heat-insulated pipes 2 and 3, air pipes 5, fan, evaporator 4, compression and condensing unit (CCU) 8, pipelines 9, valve cocks 10, safety valve 11, air 12 and coolant 13 temperature sensors, coolant pump 14 and control unit 15. Cold accumulator 1 is installed in the open air and heat-insulated, separated with a partition wall into the first 16 reservoir and the second 17 reservoir. At the heat-insulated partition wall there arranged is pipe 18 connecting the lower part of the first 16 reservoir to the upper part of the second 17 reservoir. In the upper part of the first 16 reservoir there located is perforated pipe 19 connected via heat-insulated pipe 3 to production premises and through valve cocks 10 arranged in it to a farm water supply system, heat exchanger 2 for product cooling and coolant pump 14. Coolant pump 14 is connected with heat-insulated pipe 20 to the lower part of the second 17 reservoir, in which evaporator 7 is arranged. The same evaporator 7 is connected to CCU 8. In the first 16 reservoir of cold accumulator 1 there installed are through-type air pipes 5, the outer ends of which are located in its side walls and shutoff with dampers. A fan is installed at the damper of one side wall. On through-type air pipes 5 there installed vertically and perpendicular to them are ribs that are in thermal contact with them and with side walls of the first 16 reservoir.

EFFECT: invention provides increase of usage time of natural cold in an annual cycle, increase of specific cooling capacity and accumulating capacity and reduction of specific costs for electrical power.

3 cl, 3 dwg

Description

The invention relates to the field of producing ice water for cooling agricultural products, including milk, and can be used in agricultural production, the food industry, as well as in the processing and storage of liquid products.

Known energy-efficient refrigeration units using natural cold to produce ice water for cooling agricultural products, in particular milk on dairy farms in the cold season (see, for example, "Installation for milk cooling", AS USSR No. 1121416, BI No. 42 dated 11/15/84.).

The disadvantage of this installation is the large metal consumption, low reliability at low outdoor temperatures.

Of the known devices, the closest in technical essence to the proposed invention is a combined unit for cooling milk using natural cold (RF patent No. 2390124, BI No. 15, 05/27/2010).

The combined installation contains a cold accumulator, a heat exchanger, heat-insulated pipes, air pipes, a fan, an evaporator, a condensing unit, pipelines, taps, a safety valve, air and coolant temperature sensors, a coolant pump, and a control unit.

The disadvantage of this device is the limited time of use of natural cold in the annual cycle, low specific refrigerating capacity and storage capacity, increased specific energy costs and expenses for it.

The objective of the invention is to increase the time of use of natural cold in the annual cycle, increase the specific refrigerating capacity and storage capacity, reduce the unit cost of electricity and the cost of it.

As a result of using the present invention, it becomes possible to increase the time of using natural cold in the annual cycle, increase the refrigerating capacity and storage capacity, and reduce the specific energy costs and expenses for it.

The technical result is achieved in that the cold accumulator installed in the open air is thermally insulated and divided by a heat-insulated partition into a first tank and a second tank, and a pipe connecting the lower part of the first tank to the upper part of the second tank is located at the heat-insulated partition, and the perforated pipe located in the upper end of the first thermally insulated tank, connected by a thermally insulated pipe to the production room and through the taps in it with a water system farm supply, with a heat exchanger for cooling the product, such as milk, and a coolant pump, which in turn is connected by a heat-insulated pipe to the bottom of the second heat-insulated tank, in which the evaporator is connected, connected to the compressor-condenser unit, and through-pipes are installed in the first heat-insulated capacity of the cold accumulator air pipes, the outer ends of which are located in its side walls, are closed by opening and closing flaps, and at the flap of one side wall a fan is installed, and fins are installed vertically and perpendicularly to the through pipes, which are in thermal contact with them and the side walls of the first container, the upper edges of the first rib located at the punch pipe parallel to the ribs, in contact with the upper wall of the first container and have the gap with its bottom, like all subsequent odd ribs, and subsequent even ribs have a gap with the upper wall of the first tank and are in contact with its bottom.

A horizontal perforated pipe is installed in the lower part of the second thermally insulated container, connected to a vertical pipe, at the end of which an oil-free blower with an air filter is placed on the outside air, and an equalizing through hole is made in the upper wall of the thermally insulated second container.

In the production room, on the pipeline supplying the coolant through the heat-insulated pipe to the first heat-insulated tank, a pressure sensor is installed.

The invention is illustrated in the drawing, which shows a General view of an energy-saving installation for producing ice water on farms and milk collection points (Figure 1), a top view along A-A (Figure 2) and section B-B (Figure 3).

An energy-saving installation for producing ice water at farms and milk receiving centers contains a heat-insulated cold accumulator 1, a heat exchanger 2, heat-insulated pipes 3 and 4, air pipes 5, a fan 6, an evaporator 7, a condensing unit 8, pipelines 9, valves 10, and a safety valve 11, air temperature sensors 12 and a coolant 13, a coolant pump 14, a control unit 15, and the cold accumulator 1, installed outdoors is thermally insulated and separated by a thermally insulated partition on the first tank 16 and the second tank 17, and a pipe 18 is placed at the heat-insulated partition connecting the lower part of the first tank 16 with the upper part of the second tank 17, and the perforated pipe 19 located in the upper extreme part of the first heat-insulated tank is connected by the heat-insulated pipe 3 to the production room and through the taps 10 placed in it with a farm water supply system, with a heat exchanger 2 for cooling the product, for example milk, and a coolant pump 14, which is in turn connected to a heat-insulated a cabin 20 with the lower part of the second heat-insulated tank 17, in which the evaporator 7 is placed, connected to the compressor-condenser unit 8, and in the first heat-insulated tank 16 of the cold accumulator 1, through air pipes 5 are installed, the outer ends of which are located in its side walls and are closed by opening and closing shutters 21, moreover, a fan 6 is installed at the shutter of one side wall, and ribs 22 are installed vertically and perpendicular to them through the pipes, located with them and the side walls the tank 16 in thermal contact, the upper edges of the first rib 22 located at the punch 19 located parallel to the ribs 22 in contact with the upper wall of the first tank 16 and have a gap with its bottom, like all subsequent odd ribs 22, and the subsequent even the ribs have a gap with the upper wall of the first tank 16 and are in contact with its bottom.

A horizontal perforated pipe 23 is installed in the lower part of the second heat-insulated tank 17, connected to a vertical pipe 24, at the end of which an oil-free blower 25 with an air filter is placed on the outside air, and an equalizing through hole 26 is made in the upper wall of the heat-insulated second tank 17.

In the production room on the pipeline supplying the coolant through the heat-insulated pipe 3 in the first heat-insulated tank 16, a pressure sensor 27 is installed.

Energy-saving installation for ice water on farms and milk collection points works as follows.

The first tank 16 and the second tank 17 of the insulated battery 1, located in the open air, is filled with a coolant (water) from the farm's water supply system. Before the cooled product enters the heat exchanger 2 in the cold season from the control unit 15, according to the signals from the air temperature sensors 12 and the coolant 13, the fan 6 is turned on, the shutters 21 are opened and the cold air passes through the air pipes 5, cooling the fins 22. At the same time, the coolant pump 14 and water from the second tank 17 of the heat-insulated battery 1 through the heat-insulated pipe 20 through the taps 10, passes through the heat exchanger 2, cools the product (milk), then through pipelines 9, through the heat-insulated The third tube 3 enters the perforated tube 19 located in the first container 16 of the heat-insulated battery 1, and sequentially flows around the heat-exchange fins 22, cooled by cold air coming from the fan 6. Then, from the extreme lower point of the first container 16, the cooled water rises to the top the second tank 17 through the pipe 18 and, dropping between the panels of the evaporator 7, connected to the condensing unit 8 can be cooled depending on the signals of the temperature sensors 13. Coolant heat insulation ovannoy pipe 20 returns to the coolant pump 14 and the cycle repeats. The source of natural cold works in the cold season and at night and provides the preferential night tariff, when the outside temperature is minimal in cold and transitional seasons.

Thus, the time of use of natural cold in the annual cycle (freezing and cooling water) increases, and the operating time of the compressor-condenser unit 8 in the annual cycle decreases. At the same time, energy consumption is significantly reduced.

To accelerate ice formation and water cooling, a horizontal perforated pipe 23 is installed in the second tank 17 of the heat-insulated cold accumulator 1, where air is supplied through the vertical pipe 24, which cools the water in the cold season and helps to freeze ice on the panels of the evaporator 7 and exits through the equalization hole 26.

When freezing ice in a heat-insulated battery 1, excess water is discharged through a safety valve 11, preventing its deformation.

When narrowing the channels for the passage of the coolant due to ice frost, the pressure in the pipe 9 increases and the signal of the pressure sensor 27, the fan 6 is turned off.

When servicing the heat exchanger 2, the coolant flow can be directed through the taps 10 into the perforated pipe 19 and the process of cooling the coolant and freezing ice in the first 16 and second 17 tanks will not be interrupted. In the warmer months, shutter 21 closes.

Thus, the use of an energy-saving installation for producing ice water at farms and milk collection points allows increasing the time of using natural cold in the annual cycle, increasing the specific refrigerating capacity and storage capacity, and reducing the specific energy consumption and costs for it.

Claims (3)

1. An energy-saving installation for producing ice water at farms and milk collection points, containing a cold accumulator, a heat exchanger, heat-insulated pipes, air pipes, a fan, an evaporator, a condensing unit, pipelines, taps, a safety valve, air and coolant temperature sensors, a coolant pump , a control unit, characterized in that the cold accumulator installed outdoors is thermally insulated and divided by a thermally insulated partition into a first tank and a second a tank, and a pipe is placed near the heat-insulated partition connecting the lower part of the first tank with the upper part of the second tank, and the perforated pipe located in the upper extreme part of the first heat-insulated tank is connected by the heat-insulated pipe to the production room and through the taps with the water supply system of the farm with a heat exchanger for cooling the product, for example milk, and a coolant pump, which in turn is connected by a heat-insulated pipe to the bottom of the second heat a lined tank, in which an evaporator is connected, connected to a compressor-condenser unit, and through the first heat-insulated tank of the cold accumulator, through air pipes are installed, the outer ends of which are located in its side walls and are blocked by opening and closing dampers, and a fan is installed at the damper of one side wall and on the air through pipes vertically and perpendicular to them, ribs are installed that are in thermal contact with them and the side walls of the first tank, than the upper edges of the first rib located at the punch pipe parallel to the ribs are in contact with the upper wall of the first container and have a gap with its bottom, like all subsequent odd ribs, and the subsequent even ribs have a gap with the upper wall of the first container and are in contact with it bottom. 2. Installation according to claim 1, characterized in that a horizontal perforated pipe is installed in the lower part of the second thermally insulated container, connected to a vertical pipe, at the end of which an oil-free blower with an air filter is placed in the outdoor air, and an equalizing one is made in the upper wall of the thermally insulated second container through hole. 3. Installation according to claim 1, characterized in that a pressure sensor is installed in the production room on the pipeline supplying the coolant through the heat-insulated pipe to the first heat-insulated tank.

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