UA105207U - Cooling system with intermediate cooling medium and cold-recovery generator - Google Patents

Abstract

Cooling system with cold utilizer and intermediate coolant contains compressor, air condenser, receiver, filter drier, solenoid valve, thermostatic valve, evaporator, battery tank, pump, cold utilizer, switching valves, intermediate consumption as well as external and internal temperature sensors. In this case, the heat sink is located outside the room and is connected to an external temperature sensor, and an internal temperature sensor is installed on the line connecting the consumers of the cold with the heat sink and the tank.

Description

The utility model belongs to refrigeration equipment, in particular to a cooling system with an intermediate coolant and a cold utilizer, for example, for cooling shop windows.

Cooling systems mainly for milk and agricultural products using natural cold are known, for example applications of the Russian Federation for MoMo inventions 99121105, 2009126340, 2009149787, 2011150794, 2013154863 and patents of the Russian Federation for MoMo inventions 2073819, 2175833, 23924164.

A refrigerating installation using an accumulator of natural cold is also known, containing a heat exchanger, condenser, pump, accumulator of natural cold, a compressor, a heat-regulating valve and a cooled object connected to each other by a system of technological pipelines (see ПЕр://сеиви.Бу/ sopiepi/izroI2omapiua-akkitiiuayugom-ezivevimeppodo-poYoda-hu-505iame-

Poioadiipou-iviapomki).

However, these systems and installations solve the task in a different way, using other schematic solutions and achieving a different result.

None of the listed technical solutions can be selected as a prototype. This is explained by the fact that the known solutions provide cooling taking into account the intermittent refrigeration cycle and the possibility of cold accumulation due to the phase transition and the hidden melting temperature of ice.

The listed technical solutions are not intended for cooling in a continuous refrigeration cycle.

The basis of the useful model is the task of creating a cooling system with an intermediate refrigerant and a cold utilizer, in which, through a different schematic solution, i.e. another connection of nodes and elements of the system, to ensure a reduction in the energy consumption of the cooling system due to the cooling of the antifreeze in the cold utilizer and a reduction in the operating coefficient of the compressor up to its complete stop, as well as to provide cooling due to the cold utilizer.

The task is solved by the fact that in a cooling system with a cold utilizer and an intermediate refrigerant containing a compressor, an air condenser, a receiver, a filter-drier, a solenoid valve, a temperature control valve, an evaporator, an accumulator tank, a pump,

From the cold utilizer, switching valves, cold consumers with valves regulating the flow of the intermediate refrigerant, as well as external and internal temperature sensors, while the output of the compressor is connected to the air condenser, the output of which is connected to the input of the receiver, the output of the receiver is connected through a filter connected in series with each other - dryer, solenoid and thermoregulating valves with the first inlet of the evaporator, the first outlet of which is connected to the compressor, the second outlet of the evaporator through the valves that regulate the flow of the intermediate coolant, is connected to the inlets of the cold consumers, the outlets of which are connected through the first switching valve to the inlet of the cold utilizer and through the second switching valve with the inlet of the accumulator tank, the outlet of the cold utilizer is connected to the inlet of the accumulator tank, the outlet of which is connected through the pump to the second inlet of the evaporator, and the cold utilizer is located outside the room and is connected to an external temperature sensor, and on the main line connecting the consumer chiller with a cold utilizer and a storage tank, an internal temperature sensor is installed.

The fundamental difference of the useful model is that the proposed system involves a continuous refrigeration cycle and, accordingly, the selection of natural cold does not involve the process of accumulation with phase transition, freezing and melting. In this regard, as well as in connection with the need for a lower temperature potential, antifreeze is used as an intermediate coolant.

The drawing shows a diagram of a cooling system with an intermediate coolant and a cold utilizer.

The system includes an air condenser 1, a compressor 2, a heat exchanger - an evaporator

C, heat-regulating valve 4, solenoid valve 5, filter-drier 6, receiver 7, storage tank 8, pump with adjustable performance 9, cold recycler 10, external temperature sensor 11, internal temperature sensor 12, switching valve 13 according to the corresponding temperature sensor , consumers of cold - refrigerating showcases 14, valves for regulating the flow of the intermediate coolant 15. An air release valve 16 is installed on the tank - accumulator 8, and to the pipeline connecting the tank - accumulator 8 with a pump with adjustable capacity 9, a pipeline 17 of the filling station is connected port (not shown separately) on which the shut-off valve is installed. The cold utilizer 10 and the external temperature sensor 11 are located outside the room. If necessary, the system can contain several external temperature sensors 11.

The listed elements and nodes of the cooling system are interconnected by technological pipelines as follows.

The output of the compressor 2 is connected to the air condenser 1, the output of which is connected to the input of the receiver 7. The output of the receiver 7 is connected through the filter-drier 6, the solenoid valve 5 and the temperature control valve 4 connected in series to the first input of the evaporator

C. The first outlet of the evaporator C is connected to the compressor 2. The second outlet of the evaporator C through the valve that regulates the flow of the intermediate coolant 15 is connected to the inlets of the cold consumers 14. The outlets of the cold consumers 14 are connected through the switching valves 13 to the inlet of the cold utilizer 10 and to the tank inlet -accumulator 8. The output of the cold utilizer 10 is connected to the input of the accumulator tank 8, the output of which is connected through the pump 9 to the second input of the evaporator 3.

The cold utilizer 10 is connected to the external temperature sensor 11, and the internal temperature sensor 12 is installed on the main line connecting the cold consumers 14 with the cold utilizer 10 and the accumulator tank 8.

The system works in the following order.

Compressor 2 injects the refrigerant into the air condenser 1, where it condenses and flows into the receiver 7. From the receiver 7, the condensed refrigerant enters the filter-drier 6, then through the solenoid valve 5 and the temperature control valve 4, it enters the evaporator 3. In the temperature control valve 4 the refrigerant is throttled. In evaporator C, the throttled refrigerant, cooling the intermediate refrigerant - antifreeze, boils off and the vapors are sucked back into compressor 2. Compressor 2 can be controlled both by the suction pressure and by the temperature of the antifreeze coming out of evaporator 3.

The cooled antifreeze under the pressure of the pump 9 from the evaporator C enters the heat exchangers (not shown separately) of the refrigerating showcases 14, where it is blown by fans (not shown separately) and is distributed over the shelves and the volume, cooling the products.

Control of the required amount of cold is carried out by electronic or mechanical valves regulating the flow of the intermediate coolant 15, which allow changing the required cooling capacity corresponding to the needs of the refrigerated display cases 14 due to the change in the flow of the intermediate coolant - antifreeze.

The heated antifreeze, due to the heat exchange in the refrigerating showcases 14, enters the tank

From the accumulator 8 or into the cold waste collector 10 by turning on the switching valves 13, which are controlled by the external temperature sensor 11 located outside the room and the internal temperature sensor 12 located on the antifreeze flow pipeline after the refrigerating showcases 14.

If the outside temperature turns out to be lower, the cold utilizer 10 is activated.

Claims (1)

USEFUL MODEL FORMULA A cooling system with a cold utilizer and an intermediate coolant containing a compressor, air condenser, receiver, filter-drier, solenoid valve, temperature control valve, evaporator, accumulator tank, pump, cold utilizer, switching valves, cold consumers with valves regulating the flow of the intermediate coolant, as well as external and internal temperature sensors, while output of the compressor is connected to the air condenser, the output of which is connected to the receiver input, the receiver output is connected through series-connected filter-drier, solenoid and thermoregulating valves to the first evaporator input, the first output of which is connected to the compressor, the second evaporator output through valves that regulate flow intermediate coolant, connected to the inlets of cold consumers, the outlets of which are connected through the first switching valve to the inlet of the cold utilizer and through the second switching valve to the inlet of the storage tank, the outlet of the cold utilizer is connected to the inlet of the accumulator tank, the outlet of which is connected through the pump to the second inlet of the evaporator, and the cooler is located outside the room and is connected to an external temperature sensor, and on the main line connecting the cold consumers with the cold utilizer and the accumulator tank, there is installed internal temperature sensor.