The invention relates to a heat treatment system (1) for a vehicle, comprising a coolant circuit (2) and a heat transfer fluid loop (3), the heat transfer fluid loop (3) comprising at least one heat exchanger (12, 35) configured to dissipate heat in an air flow (18, 19), the coolant circuit (2) comprising, in this order and according to a direction of circulation of the coolant in the coolant circuit (2), at least one compression device (4), a first heat exchanger (5) which thermally couples the heat transfer fluid loop (3) with the coolant circuit (2), a device (6) for accumulation of the coolant, a first passage (8) of an internal heat exchanger (7), an expansion member (9), a second heat exchanger (10) arranged in order to be passed through by an air flow (19) external to a passenger compartment of the vehicle and a second passage (11) of the internal heat exchanger (7).

An integrated system floods an air conditioning low side heat exchanger such that the air conditioning low side heat exchanger does not evaporate all the liquid refrigerant entering the air conditioning low side heat exchanger. As a result, both liquid and vapor refrigerant leave the air conditioning low side heat exchanger. The system includes an additional receiver that stores the refrigerant leaving the air conditioning low side heat exchanger. To prevent the liquid refrigerant in the receiver from overflowing, the liquid refrigerant in the receiver is used in a refrigeration system when the level of liquid refrigerant in the receiver exceeds a threshold (e.g., as detected by a sensor in the receiver).

In a motor driving apparatus having an inverter which can drive n (n being an integer not smaller than 2) motors each having a permanent magnet in its rotor, and a connection switching device for switching the connection state of the n motors, the connection switching device is operated to change the number of the motors connected to the inverter thereby to change the impedance as seen from the inverter towards the motors. When i (i being any of 2 to n) motors among the n motors are concurrently driven by the inverter, the voltage outputted by the inverter may be controlled such that the inductance values of the i motors are identical. It is possible to prevent hunting and step-out due to the phase difference between the motors driven by the inverter.

Disclosed is a transport refrigeration system including: an engine that is dedicated to the transport refrigeration system; a primary battery that is dedicated to the transport refrigeration system, the primary battery being electrically connected to the engine; and a jumper battery electrically connected to the primary battery, the jumper battery configured to automatically boost the primary battery when the primary battery fails to start the engine.

A heat source-side unit (10) includes a heat source-side circuit (11). The heat source-side circuit (11) includes a compression unit (20) including a lower-stage compression element (23) and a higher-stage compression element (21), an intermediate heat exchanger (17) disposed on a refrigerant path between the lower-stage compression element (23) and the higher-stage compression element (21), and a bypass passage (23c) connected to a suction pipe (23a) and a discharge pipe (23b) each connected to the lower-stage compression element (23). At startup of the compression unit (20), a first action is performed for stopping the lower-stage compression element (23) and operating the higher-stage compression element (21). This configuration thus suppresses occurrence of liquid compression at startup of a compressor.

A refrigeration device, a refrigerator, and a control method therefor, a food processing method and a control device. The refrigeration device includes a compressor, a condenser, a throttling device and an evaporator, and the compressor, the condenser, the throttling device and the evaporator are sequentially connected to form a refrigerant circulation loop; a connecting pipeline between an exhaust port of the compressor and a refrigerant inlet of the throttling device in the refrigerant circulation loop is a first connecting pipeline; and the condenser is arranged on the first connecting pipeline. The refrigeration device further includes an auxiliary heat exchange branch, and the auxiliary heat exchange branch includes a condensing heater for heating a heating region, and is arranged on the first connecting pipeline in parallel; and a first valve device is further arranged on the auxiliary heat exchange branch.

There is disclosed heat pump, comprising: an internal heat exchanger configured to transfer heat from refrigerant in a liquid line pathway to refrigerant in a suction line pathway, to superheat the refrigerant upstream of a compressor; and a controller configured to: control an expansion valve to maintain a target superheat of refrigerant at a control location. The target superheat is variable and is determined based on one or more operating conditions of the heat pump. There is also disclosed a method of operating a heat pump and a simulation method to determine a variable superheat.

A system includes a compressor for increasing the pressure of a refrigerant; a condenser heat exchanger arranged downstream of the compressor for receiving a high pressure refrigerant output from the compressor and for transferring heat from the high pressure refrigerant to a source of water; an expansion device for reducing the pressure of a refrigerant; and an evaporator heat exchanger for extracting heat from ambient air. The evaporator heat exchanger includes a first tube bank having a first inlet arranged to receive a high pressure refrigerant output from the condenser and a first outlet fluidly coupled to the expansion device; and a second tube bank having a second inlet arranged to receive a low pressure refrigerant output from the expansion device, and a second outlet fluidly coupled to an inlet of the compressor.

A system includes a compressor for increasing the pressure of a refrigerant; a condenser heat exchanger arranged downstream of the compressor for receiving a high pressure refrigerant output from the compressor and for transferring heat from the high pressure refrigerant to a source of water; an expansion device for reducing the pressure of a refrigerant; and an evaporator heat exchanger for extracting heat from ambient air. The evaporator heat exchanger includes a first tube bank having a first inlet arranged to receive a high pressure refrigerant output from the condenser and a first outlet fluidly coupled to the expansion device; and a second tube bank having a second inlet arranged to receive a low pressure refrigerant output from the expansion device, and a second outlet fluidly coupled to an inlet of the compressor.

An ice supply device includes an ice storage tank, a supply path, and a water flow path. The ice storage tank is configured to store sherbet ice. The sherbet ice may be taken out of the ice storage tank through the supply path. The water flow path joins the supply path. The water flow path is configured to carry flow of water there through.