34results about How to "Guaranteed heating capacity" patented technology

The invention discloses a transcritical CO based on a precooler 2 The heat pump system and the waterway two-way valve control method, the conventional transcritical CO 2 The heat pump system is assisted by a pre-cooler system; the circulating water circuit is divided into two parts in the system through the three-way water diversion valve and the three-way water collection valve, and connected by the two-way water channel regulating valve and the water channel bypass valve; The ambient temperature sensor, evaporator fin temperature sensor and evaporation pressure sensor are used, and the programmable logic controller is used as the core of acquisition, calculation and control. Through the above system configuration and a well-developed joint control method of temperature, pressure and time, transcritical CO 2 The promotion of heat pump systems to the heating field can make up for the impact of high return water temperature on transcritical CO 2 System performance degradation, proper control of units entering and exiting defrost, and addressing transcritical CO 2 The heat pump system stops heating during a relatively long defrosting time, and the average temperature of the circulating water system drops rapidly.

The invention relates to the technical field of air conditioning control, in particular to an air conditioner defrosting control method and device. The air conditioner defrosting control method comprises the steps that S0, an air conditioner enters a defrosting mode; S1, defrosting is conducted by selecting a to-be-defrosted heat exchange branch from a plurality of heat exchange branches connected in parallel, the defrosted heat exchange branch communicates with a refrigerant pipeline of an air conditioner, and the rest of the heat exchange branches are disconnected with the refrigerant pipeline; S2, the actual pressure of the defrosted heat exchange branch is obtained; S3, the actual pressure of the defrosted heat exchange branch is compared to the preset pressure of the heat exchange branch, if the actual pressure of the defrosted heat exchange branch is higher than the preset pressure of the heat exchange branch, defrosting is completed, and the step S4 is carried out, and otherwise, the step S2 is conducted; S4, whether a to-be-defrosted heat exchange branch exists is judged, if yes, the process returns to step S1, and if defrosting of all the to-be-defrosted heat exchange branches is completed, the step S5 is conducted; and S5, the defrosting mode of the air conditioner is stopped. Defrosting is thorough, and the defrosting speed is high.

The invention discloses a heat pump humidifying device and a working method. The device comprises: a heat pump system, a solar heat collector and a spray air supply system. The method is based on the atmospheric temperature T 0 and the inlet and outlet water temperature difference ΔT of the solar heat collector are divided into three working modes, namely: A, T 0 ≥15℃, △T≥30℃ working mode, B, T 0 ≥15°C, △T<30°C working mode, C, T 0 <15°C, △T<30°C working mode; the invention couples the heat pump technology with the solar heat collection technology, realizes the series / parallel operation of the heat pump and the solar heat collector, and improves the steam production and production efficiency; compared with the existing With a humidifying device, the present invention has many advantages of high steam output, good energy efficiency, economical operation and wide application range.

The invention relates to a screw extractor, in particular to a heating vibration screw extractor. The invention solves the problem that the existing screw extractor is hard to disassemble some shaft fastening pieces with tight fitness. The heating vibration screw extractor comprises a mandrel and a falcula connected with the mandrel, wherein a vibrator with adjustable vibration frequency is arranged on the top of the mandrel; the screw extractor also comprises a group of high frequency induction heaters, wherein a magnet is arranged on one end of each high frequency induction heater. When in use, the high frequency induction heaters heat the outer surfaces of the parts to be disassembled so as to reduce the interference degree between the parts to be disassembled; and the parts to be disassembled perform strong resonance vibration under the action of the vibrator so as to greatly reduce the friction force between the parts to be disassembled. In order to solve the situation that the friction force between the parts to be disassembled is too large, the vibrator is installed on the mandrel of the screw extractor of the invention to perform forced vibration of the parts to be disassembled and the heating device is added on the screw extractor, thus greatly reducing the friction force between the parts to be disassembled and solving the condition that the original screw extractor is hard to be used for disassembly.

The invention provides a heat storage type air source heat pump water cooling and heating system and an operation method thereof, and belongs to the field of heat pump technologies and refrigerating air conditioners. The system comprises an outdoor source side, a heat pump host, a user side and a heat storage module. The outdoor source side comprises a refrigerating medium pump, an air cooling heat exchanger and source side valves. An outlet of the refrigerating medium pump is sequentially connected with the air cooling heat exchanger and the source side valves through pipelines and then returns to an inlet of the refrigerating medium pump through a first liquid cooling type heat exchanger of the heat pump host. A heat storage side mainly comprises a first valve, a second valve, a heat storage box, a third valve and a fourth valve. One side of the heat storage box is sequentially connected with the first valve and the source side valves on the source side through pipelines and then returns to the heat storage box through the second valve. The other side of the heat storage box is sequentially connected with the third valve and the user side valve on the user side through pipelines and then returns to the heat storage box through the fourth valve. By adopting the heat storage type air source heat pump water cooling and heating system, the capacity of a heat pump system supplying heat in winter can be greatly reduced, the primary investment is lowered, and the operation efficiency of the heat pump is improved.

The present invention proposes an air conditioning system, its control method and device, and storage medium. The refrigerant inlet of each indoor unit is provided with a first electronic expansion valve. The outdoor unit includes an outdoor heat exchanger and a first compressor. For compressing the first cold medium, the second compressor of the hydraulic module is used to compress the second cold medium, and the outlet of the outdoor heat exchanger is connected to the inlet of the first cold medium of the first heat exchanger. The control method includes the following steps: identification The air conditioning system is mainly in cooling operation, and the indoor unit in heating operation is used as a candidate indoor unit; the condensation temperature of the candidate indoor unit is detected, and the candidate indoor unit with insufficient heating capacity is obtained according to the condensation temperature; the candidate indoor unit with insufficient heating capacity As the target indoor unit, and perform heating protection for the target indoor unit; control the second compressor to reduce to a preset frequency and control the second electronic expansion valve to reduce to a preset opening to ensure the heating capacity of the heating indoor unit.

The invention relates to an air-cooled PVT air conditioner outdoor unit and its operation method. The air-cooled PVT outdoor unit includes a fan, a PVT condensation / evaporation coil branch, a PVT heat exchange plate, a conventional condensation / evaporation coil branch, and a PVT Water coil. Combining the air conditioner condenser / evaporator and PVT components, integrating the entire outdoor unit to work and install together, making full use of daytime solar energy and nighttime long-wave radiation energy, and adopting different cooling / heating / power supply schemes for different seasons and time periods, to achieve The advantages of PVT components and the condenser / evaporator of the air conditioning unit complement each other to improve the utilization rate of the system throughout the year and around the clock. In the present invention, the PVT assembly and the air-cooled outdoor unit can work independently and jointly, which is more convenient to ensure the cooling / heating capacity of the system in all seasons and different outdoor environments, and achieve the purpose of energy saving.