43results about How to "Increase the amount of refrigerant" patented technology

The invention relates to an air conditioner device and a control method thereof. The control method comprises the steps that when the air conditioner device is in a heating mode, whether the defrosting condition is met or not is judged, and if yes, a heating defrosting mode is conducted; in the heating defrosting mode, part of refrigerants discharged by a compressor are promoted to directly flow towards an outdoor heat exchanger through bypass pipelines in a branch form, and heat of the other part of refrigerants is utilized for defrosting the outdoor heat exchanger; the temperature of the outdoor environment where the outdoor heat exchanger is located, and the temperature of a coil pipe of the outdoor heat exchanger are obtained; when the difference value between the outdoor environment temperature and the coil pipe temperature is larger than or equal to the preset temperature value, the rotation speed of an outdoor draught fan and the rotation speed in the heating mode are kept to be consistent; and when the difference value is smaller than the preset temperature difference value, running of the outdoor draught fan is stopped. The air conditioner device comprises the compressor, an indoor heat exchanger, a throttling device and the outdoor heat exchanger and further comprises the bypass pipelines, a temperature obtaining module and the outdoor draught fan, and the rotation speed of the outdoor draught fan can be adjusted in a controllable manner.

The invention discloses a heat recovery external unit system and an air conditioner system. The heat recovery external unit system comprises a compressor (1), a high-pressure air pipe (2), a first branch (5), a second branch (6) and a third branch (7); the first branch (5), the second branch (6) and the third branch (7) are arranged in parallel; a first outdoor heat exchanger (8) is arranged on the first branch (5); a second outdoor heat exchanger (9) is arranged on the second branch (6); and when the air conditioner system is positioned in a low temperature refrigeration mode where the outdoor temperature is lower than a first preset temperature, or is positioned in a high temperature heating mode where the outdoor environment temperature is higher than a second preset temperature, one of the first branch (5) and the second branch (6) is connected and the other one is disconnected, and the third branch (7) communicates with the high-pressure air pipe (2), wherein the first preset temperature is lower than the second preset temperature. According to the heat recovery external unit system, a situation that rapid refrigeration is realized in a low temperature environment or rapid heating is realized in a high temperature environment can be ensured, and the use comfort of an air conditioner is improved.

An air conditioning system for motor vehicles includes a compressor, a condenser, a plurality of air conditioning units connected in parallel with each other with respect to the compressor and the condenser, and a flow rate control unit configured to, when a specific one of the air conditioning units is additionally turned on or is turned off, prevent occurrence of a sudden change in refrigerant amount in the remaining air conditioning units.

The invention provides a control method of a heat pump system. The control method comprises the steps that operation parameters of the heat pump system are obtained; whether a control condition for delaying frosting is met or not is judged; and when the control condition for delaying frosting is met, the opening degree of a first throttling device and/or the opening degree of a second throttling device are/is controlled to be increased. According to the control method of the heat pump system, the frosting period of the heat pump system can be prolonged, the indoor continuous heat supply time is prolonged, and the indoor heat comfort is improved.

The invention belongs to the technical field of air conditioners, and aims to solve the problem that air conditioner condensation of an existing air conditioner cannot be solved completely by increasing the speed of an indoor fan. The invention provides a control method for an air conditioner and the air conditioner. The control method for the air conditioner comprises the steps that a dew point temperature of indoor air and a coil temperature of an indoor heat exchanger of the air conditioner are acquired; and refrigerant quantity in a refrigerant circulation system of the air conditioner isselectively adjusted according to the dew point temperature of the indoor air and the coil temperature of the indoor heat exchanger. According to the control method for the air conditioner and the airconditioner, whether the air conditioner has condensation or has condensation risks or not can be judged according to the dew point temperature of the indoor air and the coil temperature of the indoor heat exchanger, so that the refrigerant quantity in the refrigerant circulation system of the air conditioner can be adjusted pertinently, the coil temperature of the indoor heat exchanger can be adjusted, condensation of the air conditioner can be avoided, that is, water blowing and dripping phenomena of the air conditioner can be avoided, indoor environment cannot be polluted, and user experience is improved.

The invention discloses an air conditioner system, a heating control method and device thereof and a machine-readable storage medium. The heating control method comprises the data obtaining step (S0) that the first superheat degree DSH1of refrigerants and the exhaust pressure P1 in an exhaust pipe of a compressor, the second superheat degree SSH2 of refrigerants in an exhaust pipe of a gas-liquid separator and the third superheat degree ACSH3 of refrigerants in a gas inlet pipe of the gas-liquid separator are obtained, and the gas-liquid separator liquid drainage step (S1) that when the exhaust pressure P1 is within the range of the first allowed exhaust pressure, the first superheat degree DSH1 is within the preset range of the first superheat degree, the second superheat degree SSH2 is smaller than a lower threshold value of the preset range of the second superheat degree and the third superheat degree ACSH3 is smaller than a lower threshold value of the preset range of the third superheat degree, parts of the refrigerants in the exhaust pipe of the compressor are divided to flow into the gas inlet pipe of the gas-liquid separator. According to the heating control method, the liquid refrigerants accumulated at the bottom of the gas-liquid separator can be exhausted timely, and the heating capability of the air conditioner system at the low temperature is improved.

The invention provides a cooling device which is provided with a separation recycling device with a supercritical pressure formed at a high-pressure side, can provide hot water by using waste heat, and enables high-efficient operation of a refrigeration cycle. The cooling device (R) of the invention is provided with a separation recycling device with a supercritical pressure formed at the high-pressure side; the cooling device (R) is provided with a waste heat recovery heat exchanger (70), and the waste heat recovery heat exchanger (70) is provided with a waste heat recovery medium flow path (70B) and a refrigerant flow path (70A); and the cooling device (R) allows the second refrigerant flow (main refrigerant flow towards an evaporator) which flows out from a gas cooler (46) and has not flowed into an intermediate heat exchanger (80) forming the separation recycling device to flow into the refrigerant flow path (70A) of the waste heat recovery heat exchanger (70).

An air conditioner and a method of controlling the air conditioner includes a variable capacity compressor being operated at a maximum capacity in a case of starting an operation of the compressor after an extended stoppage for a lengthy period of time longer than a preset reference time, thus increasing a flow rate of a circulated refrigerant during an initial stage of the operation and increasing a quantity of heat generated from the motor of the compressor to vaporize and forcibly discharge a remaining liquid refrigerant from the compressor during the initial stage. Therefore, the variable capacity compressor of the air conditioner does not require heaters conventionally used for heating the refrigerant during such a stoppage, and so easy designing and production of the compressor is achieved, in addition to a reduction in a production cost of the air conditioner. This air conditioner also accomplishes a reduction in a maintenance cost thereof.

The invention provides a control method and control device of an air conditioner, a computer readable storage medium and the air conditioner. The control method of the air conditioner comprises the following steps: when the air conditioner is in a refrigeration mode, and after the air conditioner receives a shutdown command, a first electromagnetic two-way valve in a first refrigerant flow path iscontrolled to be closed, wherein the first refrigerant flow path includes a refrigerant outlet of an outdoor heat exchanger, the first electromagnetic two-way valve and a refrigerant inlet of an indoor heat exchanger which are sequentially connected; after a compressor is controlled to continuously operate for preset time t1, a second electromagnetic two-way valve in a second refrigerant flow path is controlled to be closed, wherein the second refrigerant flow path includes a refrigerant outlet of the indoor heat exchanger, the second electromagnetic two-way valve and a refrigerant inlet of the outdoor heat exchanger which are sequentially connected; and the air conditioner is controlled to stop after the compressor stops running.

The invention discloses a control method of a multi-split air conditioner. The control method of the multi-split air conditioner comprises the following steps of (1) increasing the opening degree of an electronic expansion valve in an indoor unit not turned on so as to remove condensation on a heat exchanger of the indoor unit not turned on when detecting completion of defrosting or oil return; and (2) restoring the electronic expansion valve of the indoor unit not turned on to the initial opening degree after completion of condensation removing. The invention further discloses the multi-splitair conditioner and a storage medium. According to the technical scheme, after completion of defrosting or oil return, the amount of refrigerant going into the heat exchanger of the indoor unit not turned on is increased in the heating process so as to remove condensation on the heat exchanger of the indoor unit not turned on by increasing the opening degree of the electronic expansion valve in the indoor unit not turned on; accordingly, the outer surface of the heat exchanger of the indoor unit not turned on for a long term is kept dry without concentration in real time.

The invention discloses a permanent magnet linear motor, which includes a primary assembly, the primary assembly includes a machine body, a primary iron core, a plurality of coil windings, cooling joints and cooling channels, a plurality of coil windings are connected to each other and fixed on the primary iron core, the primary iron core and the body It is fixedly connected and located inside the machine body. The cooling joint is fixed at one end of the machine body. The outer wall of the cooling channel is close to the primary core and several coil windings. The cooling channel includes the top cooling channel and the side cooling channel. One end of the side cooling channel is connected to the top cooling channel. The flow channel is connected, and the other end is connected with the cooling joint, and the hole diameter of the cooling flow channel is larger than the hole diameter of the cooling joint. In the present invention, the cooling channel is closely attached to the primary iron core and the coil winding, directly cooling the heat source, and the effect is good; the aperture of the cooling channel is larger than the aperture of the cooling joint, which increases the amount of refrigerant in the cooling channel and effectively suppresses the temperature rise of the body; in addition, the side The cooling channel cooperates with the top cooling channel to further increase the volume of the refrigerant stored in the body.