EP-3845832-B1 - BIFUNCTIONAL COMPRESSION REFRIGERATOR

Inventors

• Ivanov, Alexander Vladimirovich

Dates

Publication Date

20260506

Application Date

20200509

Claims (7)

1. A bifunctional compression refrigerator located inside a building (19), said refrigerator including: • a thermally insulated cabinet (1) equipped with an evaporator (3), • a motor-driven compressor (4), • a condenser (5), • a temperature controller (10), • a first temperature sensor (11), • a ventilation module (12) comprising • a housing (13), • an inlet ventilation pipe (14), • an outlet ventilation pipe (15), and • a fan (16), the inlet ventilation pipe (14) and the outlet ventilation pipe (15) being arranged on the opposite sides of the housing (13), the fan (16) being installed inside the housing (13) between the inlet ventilation pipe (14) and the outlet ventilation pipe (15), the housing (13) being arranged on the thermally insulated cabinet (1), the condenser (5) being installed inside the housing (13), and the housing (13) being configured to have access to an outdoor air outside the building (19), characterised in that an inlet vent (22) geometrically coupled to the inlet ventilation pipe (14) and an outlet vent (23) geometrically coupled to the outlet ventilation pipe (15) are arranged inside the housing (13), in that a first switching unit (24) is arranged between the inlet vent (22) and the inlet ventilation pipe (14), said first switching unit (24) being configured: • to open the inlet vent (22) and to close the inlet ventilation pipe (14), and • to close the inlet vent (22) and to open the inlet ventilation pipe (14), in that a second switching unit (25) is arranged between the outlet vent (23) and the outlet ventilation pipe (15), said second switching unit (25) being configured: • to open the outlet vent (23) and to close the outlet ventilation pipe (15), and • to close the outlet vent (23) and to open the outlet ventilation pipe (15), in that a second temperature sensor (26) and a control unit (27) are arranged on the thermally insulated cabinet (1), and in that the control unit (27) is integrated with the temperature controller (10).
2. The refrigerator according to claim 1, characterised in that the motor-driven compressor (4) is arranged on the thermally insulated cabinet (1).
3. The refrigerator according to claim 1, characterised in that the motor-driven compressor (4) is installed inside the housing (13).
4. The refrigerator according to claim 1, characterised in that a first air filter (28) is arranged inside the inlet ventilation pipe (14).
5. The refrigerator according to claim 4, characterised in that a second air filter (29) is arranged inside the inlet vent (22).
6. The refrigerator according to claim 1, characterised in that the housing (13) is thermally insulated.
7. The refrigerator according to claim 1, characterised in that the housing (13) is extended along an axis (Y), in that the inlet ventilation pipe (14) and the outlet ventilation pipe (15) are arranged at a same level along the axis (Y), and in that the condenser (5) is oriented perpendicular to the axis (Y).

Description

The invention relates to a refrigeration, air conditioning and ventilation equipment like that described in GB2516900A, US5743109A, FR2189693A1, and can be used to improve the indoor microclimate. A compression indoor refrigerator is known from the prior art (Veynberg B.S., Vayn L.N., Household compression refrigerators, Moscow, Pishchevaya Promyshlennost, 1974, pp. 25-30), consisting of a thermally insulated cabinet with an evaporator, a filter-dryer, a capillary tube, and a motor-driven compressor with an air-cooled condenser mounted on the thermally insulated refrigerator cabinet. The operation of the refrigerator is accompanied by various physical processes resulting from a vapor-compression cycle taking place within the refrigeration circuit thereof, such as a heat generation in the condenser and an indoor dissipation of this heat. During the cold season, such heat generation improves the indoor microclimate. However, during the warm season, and especially in hot climates, the excessive heat worsens the indoor microclimate, and creates an additional load on an air conditioning device, if any, leading to increased energy consumption. An indoor dual-function refrigerator is know from the prior art (CN 2264347Y), which combines the refrigeration and air conditioning functions. This device combines two functional modules, including a refrigeration module and an air conditioning module arranged inside the building. The modules have a common motor-driven compressor and a condenser, but separate evaporators. The motor-driven compressor and the condenser with forced air cooling are located outside of the building, which is not always permissible due to the architectural and administrative restrictions of the building. In addition, the dual function of the device is achieved by mechanically combining two functionally independent modules: a refrigeration module and an air conditioning module. Furthermore, each module retains its own functions without expanding them. The closest technical solution, selected as a prototype, is a household refrigerator (RU 2342609) intended for use in cold climates, which consists of indoor and outdoor units. The indoor unit is located inside the building and consists of a thermally insulated cabinet with an evaporator, a temperature sensor, and a temperature controller. A motor-driven compressor and a condenser are arranged as the outdoor unit installed outside of the building and connected with the indoor unit via direct and return lines of the refrigeration circuit. Furthermore, the refrigerator is further provided with an additional liquid coolant heat circuit comprising a heat exchanger in the indoor unit and a radiator in the outdoor unit. The heat exchanger and radiator are also interconnected via direct and return lines. The liquid coolant inside the additional heat circuit is circulated by a pump. In this case, both the condenser of the refrigerator and the radiator are cooled by outside air. The arrangement of the outdoor unit outside the building, as in the previous example, is not always acceptable due to the architectural and administrative restrictions of the building. In addition, extended length of the lines connecting the outdoor and indoor units causes higher hydraulic resistance when circulating refrigerant through the refrigeration circuit. This increases the load on the motor-driven compressor, which results in higher energy consumption by the refrigerator. During the cold season, the motor-driven compressor of the refrigerator is turned off, and the thermally insulated cabinet is cooled due to a natural external cold by pumping the liquid coolant through the additional heat circuit connecting the outdoor and indoor units. During such process, the heat penetrating inside the thermally insulated cabinet from the room is carried outside by the coolant. As a result, the indoor temperature decreases, which worsens the microclimate and imposes an additional load on the heating and air conditioning device, if any. This, in turn, leads to an increased consumption of energy required to maintain a comfortable microclimate. During the warm season, the additional heat circuit is disconnected, the motor-driven compressor is turned back on, and the refrigeration circuit operates as in a conventional refrigerator. In this case, the heat penetrating inside the thermally insulated cabinet from the room is also carried outside by the coolant in the process of a vapor-compression cycle. As a result, same as during the cold season, the indoor temperature decreases. However, even during the warm season, reducing indoor temperature is not always necessary, for example, in case of cool weather, when it becomes desirable to warm-up the building by turning on the heating or air conditioning device, which subsequently increases the consumption of energy required to maintain a comfortable microclimate. Thus, regardless of the indoor microclimate, the prototype consistently realizes only