RU5850U1 - MOBILE REFRIGERATOR - Google Patents

Description

MKI MOBILE REFRIGERATOR F25D15 / 00

The utility model relates to means of transporting lounging products, in particular to mobile refrigerated vehicles.

A vehicle refrigeration chamber is known (UK patent N 1170138, MKI 60 RZ / 20), designed for the transportation of perishable goods, made in the form of a thermally insulated van, for the cooling of which eutectic battery plates are used. The van is cooled by air, which is moved by a fan and washes the eutectic battery plates. However, this cooling principle cannot be used to cool a large number of cargoes, since it does not provide high cooling capacity.

Known refrigerator trailer (UK patent N 2211922 MKI F25D15 / 00), designed for the transport of perishable products, containing an insulated van located on a movable chassis, inside which there is refrigeration equipment containing a refrigeration unit located outside the van, a heat exchanger made in the form of evaporative coils connected to the refrigeration unit, an energy source made in the form of an electric generator and designed to power compressors and a control device.

The disadvantage of this design is the high cost and complexity of the design of refrigeration equipment. The complexity of the design of such equipment lies in the fact that, along with refrigeration compressors, air coolers and an internal combustion engine, it is necessary to provide rigid fastening of all units to a powerful frame.

The use of an internal combustion engine leads to an increase in operating costs, which are associated with a significant consumption of fuel.

B60P 3/20

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of an isothermal van, leads to an increase in the intensity of impacts on elements of refrigerated equipment during transportation, and as a result, to an increase in the number of failures and a decrease in the reliability of the refrigerator as a whole.

The proposed design of a mobile refrigerator is aimed at solving the problem - ensuring the safety of perishable products, while reducing the cost of refrigeration equipment and operating costs, while increasing the reliability of the refrigerator.

The essence of the utility model is expressed in the aggregate of the following essential features:

A mobile refrigerator containing an isothermal van located on a movable chassis, refrigeration equipment containing a refrigeration unit located outside the van, a heat exchanger made in the form of an air cooler and a cold eutectic battery, connected by pipelines in parallel through a switching unit with a refrigeration unit and a microprocessor. The switching unit is made in the form of two solenoid valves, one of which is installed on the outlet pipe of the refrigeration unit, and the second on the inlet pipe of the refrigeration unit and a mode switch electrically connected to the solenoid valves. The van is equipped with an electrical connector for connecting an external power source, and the refrigeration unit is located under the bottom of the van.

The technical result achieved by this design implementation of the mobile refrigerator is to reduce the cost of the refrigerator by providing automatic switching to different operating modes of the refrigeration equipment, which in turn allows you to save energy and save products in a given cooling mode.

paired power supply 2204, or stand-alone power supply 220V, 50Hz. Such power sources serve to provide energy to the refrigeration unit. This is a positive result, since it reduces operating costs and allows you to cool perishable products without an internal combustion engine energy generator, which makes it possible to exclude the use of vehicle engine energy, which is very significant for small vehicles with low-power engines.

In FIG. 1 - presents a General view of the mobile refrigerator.

In FIG. 2 is a rear view.

In FIG. 3 - switching node.

In FIG. 4 - connection diagram of heat exchangers.

Where: 1 - mobile refrigerator

2- isothermal van

3- movable chassis

4- refrigeration unit

5- air cooler

6- cold eutectic battery

7 - output pipeline

8 inlet pipe

9- switching node

10 microprocessor

11-solenoid valves

12-mode switch

13-electrical connector

14-wagon bottom

A mobile refrigerator is made as follows: a mobile refrigerator 1 containing an isothermal van 2 located on a movable chassis 3, refrigeration equipment containing a refrigeration unit 4 located outside the van, a heat exchanger made in the form of an air cooler 5 and a cold eutectic accumulator 6 connected by pipelines 1, 8 in parallel through a switching unit 9 with a refrigeration unit and a microprocessor 10. The switching unit is made in the form of two solenoid valves AND, one of which is installed on high the bottom pipe 7 of the refrigeration unit, and the second at the inlet pipe 8 of the refrigeration unit and a mode switch 12, electrically connected to the solenoid valves 11. The van is equipped with an electrical connector 13 for connecting an external power source, and the refrigeration unit is located under the bottom of the van 14.

Mobile refrigerator ensures the safety and cooling of products as follows. The presence of an air cooler and a eutectic battery connected in parallel through a control device to the refrigeration unit allows cooling products in two modes:

1 Refrigeration unit - air cooler;

2 Refrigeration unit - eutectic cold accumulator. Moreover, the first mode provides preliminary cooling

products by connecting the refrigeration unit through a switching device to the air cooler. The second mode is designed to ensure the safety of products during their transportation by connecting through a switching device to a cold eutectic battery, which provides replenishment of cold losses through the enclosure of the insulated van and charges them.

The air cooler is placed inside the van and connected via pipelines through the control device to the refrigeration unit. Cold accumulators are located inside the van and pipelines are connected through the control device to the refrigeration unit. Moreover, the air cooler and the eutectic cold accumulators are parallelly connected through the switching unit to the refrigeration unit.

The refrigeration unit is connected via copper pipelines to air coolers and cold accumulators to form a closed refrigerant control circuit. The pneumatic-hydraulic circuit also contains a thermostatic valve and a filter drier. A crankcase heater for starting the refrigeration unit at low ambient temperatures. The electric power of the chiller is carried out using an electric cable connected to an external power source of 220 V, 50 Hz.

The refrigeration unit is mounted together with a filter drier and a crankcase heater and located under the bottom of the van.

The switching unit is made in the form of two solenoid valves, one of which is installed on the outlet pipe of the refrigeration unit, and the second on the inlet pipe of the refrigeration unit and a mode switch electrically connected to the solenoid valves.

The control device, made in the form of a microprocessor, performs the following functions: measures the temperature in the van, maintains a predetermined temperature level, and thaws the air cooler. To ensure operation, the control device further comprises temperature sensors and a step-down transformer.

The inventive utility model can be implemented in mass production using standard equipment, modern materials and technologies. There is a full possibility of serial multiple reproduction of the proposed solution.

Claims (4)

1. A mobile refrigerator containing an isothermal van located on a movable chassis, refrigeration equipment containing a refrigeration unit located outside the van, a heat exchanger connected through pipelines to the refrigeration unit, and a microprocessor, characterized in that the heat exchanger is made in the form of an air cooler and a cold eutectic battery connected by pipelines in parallel through a switching unit with a refrigeration unit.  2. The refrigerator according to claim 1, characterized in that the switching unit is made in the form of two solenoid valves, one of which is installed on the outlet pipe of the refrigeration unit, and the second on the inlet pipe of the refrigeration unit and a mode switch electrically connected to the solenoid valves.  3. The refrigerator according to claim 1, characterized in that the van is equipped with an electrical connector for connecting an external power source. 4. The refrigerator according to claim 1, characterized in that the refrigeration unit is located under the bottom of the van.