113results about How to "Improve heating energy efficiency" patented technology

The invention relates to a heat pump drying device with a humidity and temperature adjusting function. The heat pump drying device with the humidity and temperature adjusting function comprises a drying room, an air return flue, a circulation draught fan in the air return flue, an air exhaust flue communicated with the air return flue, an exhaust fan at an opening of the air exhaust flue, an air heat recovery device arranged at the intersection of the air return flue and the air exhaust flue, and a heat pump unit, wherein the air return flue is communicated with an air feeding opening and an air return opening of the drying room. The heat pump unit comprises a compressor, a temperature-adjusting condenser, a main condenser, an expansion valve, an indoor evaporator and a heat recovery evaporator which are sequentially connected in series through pipes, wherein the main condenser is arranged in the air return flue, and the heat recovery evaporator is arranged at an opening of the air exhaust flue. The temperature and humidity of the drying room can be adjusted directly at any time according to the need of a drying process, sensible heat and latent heat contained in high-temperature and high-humidity air exhausted out of the drying room are recovered to the maximum extent, the evaporating temperature of the heat pump drying device is increased so as to improve the efficiency of the drying device, and accordingly the heat pump drying device has higher properties of energy saving and environmental friendliness.

The invention relates to a superhigh-temperature heat pump drying system. The superhigh-temperature heat pump drying system comprises a drying room, an air return duct, a circulating draught fan, an exhaust duct, an exhaust fan, an air heat recovering device and at least two heat pump units. The air return duct is communicated with an air supply port and an air return port of the drying room. The circulating draught fan is arranged in the air return duct. The exhaust duct is communicated with the air return duct. The exhaust fan is arranged at a duct opening of the exhaust duct. The air heat recovering device is arranged at the intersection of the air return duct and the exhaust duct. The heat pump units are used in parallel. According to the superhigh-temperature heat pump drying system, the two or more heat pump units work in parallel, and the drying room is heated by absorbing low-grade ambient air heat at the initial stage of the drying process, so that the temperature is increased; after the temperature is increased to a certain extent, high-temperature and high-humidity air exhausted out of the drying room is dehumidified, and sensible heat and latent heat contained in the high-temperature and high-humidity air are recovered to the maximum extent; due to the gradient difference of the temperature ranges of cycle working fluid of the heat pump units, relatively higher air supply temperature can be provided through the system, and meanwhile it is guaranteed that the evaporating temperature of the drying units is sufficiently increased.

In order to solve the problem of weak comfort due to refrigeration or heating delay or even if incapability of refrigerating or heating caused by reversing delay or no in-place of reversing of refrigerant in a heat pump air conditioning system in the prior art, the invention provides a heat pump air conditioning system of a pure electric vehicle and the pure electric vehicle. The heat pump air conditioning system of the pure electric vehicle comprises an electric compressor, a gas-liquid separator, an internal first heat exchanger, an external first heat exchanger, an intersystem heat exchanger, a first expansion valve, an external second heat exchanger, a second expansion valve, an electric water pump, an internal second heat exchanger, multiple pipes connected among equipment, and valves arranged on the pipes. The heat pump air conditioning system of the pure electric vehicle realizes the functions of refrigerant refrigeration and secondary heating of coolant of the vehicle air conditioning system, and effectively prevents the refrigeration or heating delay, or even the condition of incapability of refrigerating or heating; and meanwhile, the heat pump air conditioning system of the pure electric vehicle is higher in heating energy efficiency, high in comfort, simple and liable to perform.

The invention discloses a refrigerating heat pump type frostless air conditioner outdoor unit which comprises an outdoor unit shell, an evaporator, a draught fan, a middle partition plate, a compressor and frequency conversion electric control module space, a frequency conversion electric control box and a compressor. The refrigerating heat pump type frostless air conditioner outdoor unit is characterized in that an air inlet of an induced air way is arranged at an air outlet of the draught fan, the plane formed by the air outlet of the draught fan serves as the projection plane; an overlapped plane is formed by the plane formed by the air inlet of the induced air way and the projection of the plane formed by the air outlet of the draught fan on the projection plane; the induced air way penetrates the middle partition plate to communicate with the compressor and frequency conversion electric control module space; an air collecting hood is arranged on the outdoor unit shell of the compressor and frequency conversion electric control module space; the air collecting hood is connected with a heating air supply air pipe; and discharged air of the draught fan enters the compressor and frequency conversion electric control module space through the induced air way, flows through the compressor and the frequency conversion electric control box, then enters the air collecting hood and is conveyed to the air inlet side of the evaporator through the heating air supply air pipe to flow out. The refrigerating heat pump type frostless air conditioner outdoor unit has the beneficial effects that frostless heating is achieved, cooling of a compressor frequency conversion electric control module is achieved, the evaporation heating amount is larger, and the air conditioner energy efficiency is high.

The invention provides a heat pump system and an air conditioner. The heat pump system comprises two or more stages of compressors, an evaporator (5) and a condenser (6), and further comprises a flashdevice, the flash device can guide gas generated by flash into the two or more compressors, at least one cooler is further arranged between at least two adjacent compressors and can be used for cooling the exhaust gas of one compressor in the two adjacent compressors, and then enters the other one of the two adjacent compressors to be compressed together with the gas generated by flash generationof the flash device. According to the heat pump system and the air conditioner, the suction temperature of all the compressors except the lowest-stage compressor can be reduced, the final exhaust temperature of a compression system is reduced, the energy consumption of the compressor is reduced, so that the heat energy efficiency of the heat pump system is improved.

The invention discloses a wind-exhaust and heat-recycle air-conditioning system of a multi-stage and all-condition continuous heat pump, which comprises a new wind pipe, a wind exhaust pipe, a first-stage refrigerating system and a second-stage refrigerating system, wherein the first-stage refrigerating system comprises a first-stage condenser, a first-stage compressor and a first-stage main evaporator successively connected in series; the first-stage condenser is arranged in a fresh wind pipe; the first-stage main evaporator is arranged in an exhaust wind pipe; the second-stage refrigeratingsystem comprises a second-stage condenser, a second-stage compressor and a second-stage main evaporator successively connected in series; the second-stage condenser is arranged in the fresh wind pipein the upwind direction of the first-stage condenser; and the second-stage main evaporator is arranged in the exhaust wind pipe in the downwind direction of the first-stage condenser. The air-conditioning system provided by the invention has the advantages that the system can meet the air-conditioning requirements in winter and transition season, does not need to be matched with other air-conditioning equipment, has high heating energy efficiency, does not need to be provided with an auxiliary heat source for defrosting, reduces the energy consumption and simultaneously decreases the power distribution capacity of the air-conditioning system, thereby having good social and economic benefits.

The invention relates to a heat accumulating solar coupling enhanced vapor injection type air source heat pump system and a control method thereof. The system comprises an enhanced vapor injection compressor, a four-way reversing valve, a gas-liquid separator, a first electronic expansion valve, a second electronic expansion valve, an indoor heat exchanger, an outdoor heat exchanger, a hot water tank, an electric heater and related valves, and is characterized by further comprising a heat accumulator and a solar heat collector. When the environment temperature is lower than a switching temperature in the winter, solar energy is coupled with an air source heat pump by the heat accumulator; and when the heat of the heat accumulator is not enough, a heat storage process of the heat pump is started. In other seasons, the solar energy is directly used for heating water, and therefore, the advantages of the solar energy are fully played. The heat accumulator is used as an auxiliary heat source of an air injection branch, and the mass flow rate of a refrigerant of an air injection line and the heating capacity of a unit can be greatly increased, so that the unit can still run stably when the environment temperature is quite low (for example, the environment temperature is lower than -20 DEG C). Meanwhile, defrosting of the unit can be implemented well.

The invention relates to a coal-gas combined heating supply method, belonging to HVAC area. The first step of said method is that small peak-shaving boiler with burning gas, as peak-shaving thermal source, running with the parallel of central heat network, is set in each thermal station of civil thermal network with the heat source, which is the boiler in the huge heat supply or coal-burning region. Said secondary backwater is that first heat exchanger obtains quantity of heat generated by the boiler of coal-burning thermal power station or huge coal-burning region and transmitted by the first pipe network, and then it is heated furthermore by small gas-burning peak-shaving boiler so that independent adjusting in time on each heat supply region is accomplished. Thermal resource only bears the basic load of heat supply and the lack of heat is compensated by small gas-burning peak-shaving boiler in each thermal power station. The heat value is changed as the relation of climate and requirement changes. Said first network also bears adjusting action.

The invention discloses a secondary network balancing method based on computer simulation adjustment and belongs to the technical field of secondary networks of heat supply systems. According to the technical scheme, the method comprises the following steps: drawing a secondary pipe network plan of a heat supply system, determining the heat supply area of each entry branch, and establishing a secondary network system model; utilizing a hydraulic analysis system, and obtaining the flow of each pipe section and the ideal opening degree of a valve through hydraulic calculation; carrying out primary debugging of the valve, and achieving initial balance during cold state operation before heat supply; combining water return temperature of a system vertical pipe and the change of the room temperature at the heat supply initial stage to carry out heat state debugging of the valve so as to realize hydraulic balance. The method has the advantages that the balance method is used for solving the phenomenon of hydraulic imbalance of the secondary network of the heat supply system, the hydraulic working condition of the heat supply system is simulated through a computer, in combination with the valve flow characteristic curve, the opening degree of the valve is calculated, and then the hydraulic balance of the secondary network is realized according to the calculated opening degree of the valve.

The invention discloses a refrigeration heat pump type frostless air conditioning outdoor unit. The refrigeration heat pump type frostless air conditioning outdoor unit includes an outdoor unit housing, an evaporator, a fan, an intermediate partition plate, a compressor and frequency conversion electrical control module space, a frequency conversion electrical control box, and a compressor. An air induction channel air inlet is arranged in a fan air outlet, a plane formed by the fan air outlet is used as a projection plane, projections of a plane formed by the air induction channel air inlet and the plane formed by the fan air outlet on the projection plane form an overlapped plane, an air induction channel passes through the intermediate partition plate and communicates with the compressor and frequency conversion electrical control module space; an air collection cover is arranged on the outdoor unit housing of the compressor and frequency conversion electrical control module space; the air collection cover is connected to a heating air supplying duct; air outflowing from the fan enters the compressor and frequency conversion electrical control module space through the air induction air channel, flows through the compressor and the frequency conversion electrical control box, and then enters the air collection cover to be conveyed to an evaporator air inlet side by the heating air supplying duct, and flows out. The refrigeration heat pump type frostless air conditioning outdoor unit can achieve frostless heating, can cool the compressor frequency electrical control module, is large in evaporation capacity and heating capacity, and is high in air conditioning energy efficiency.

The invention discloses a solar energy coupling air source heat pump integrated domestic hot water system and a heating method thereof. A solar evaporation heat collector is arranged on inner surface of a shell of an outdoor unit of a solar energy air source heat pump, and an indoor automatic-controlled heat preservation water tank is arranged in a room and regulated and controlled by a control system through a circulation pipeline to achieve solar energy coupling air source heat pump integrated domestic hot water supplying. According to the solar energy coupling air source heat pump integrated domestic hot water system and the heating method thereof, functional advantage complementation of the solar energy and the air source heat pump is achieved by controlling the coupling system, and on the basis of momentarily and sufficiently supplying domestic hot water of which the temperature is intuitively and individually set to a user, the operation cost of the system is further lowered, and the function guarantee performance and using comfortableness of the system are improved.

The invention provides a running control method, a device, an air conditioner and a computer readable storage medium. The running control method comprises the steps that after the running time of theheating mode reaches the preset time, the temperature difference between the middle temperature and the outlet temperature of a second type indoor unit is determined and recorded as the supercooled degree temperature difference; and the size relationship between the supercooled degree temperature difference and the preset temperature difference is compared according to the preset period; and the opening-closing degree of an electronic expansion valve of the second type indoor unit is adjusted according to the size relationship. Through the technical scheme of the running control method, a refrigerant in the air conditioner can normally flow, the problem that the refrigerant accumulates in the second type indoor unit is solved, accuracy and reliability of control of the opening-closing degree of the electronic expansion valve are improved, the situation that the opening-closing degree of the electronic expansion valve is excessively large or small is effectively reduced, the stability of running of the air conditioner is further improved, the heating energy efficiency of the air conditioner is improved, and improving of the user experience is facilitated.

The invention discloses a water heater and a control method and device of the water heater. The control method of the water heater comprises the steps that a selection instruction is received; an operating mode, corresponding to the selection instruction, in the water heater is determined, and multiple operating modes are stored in the water heater; detection temperature applied to the determined operating mode is acquired, and the detection temperatures at different positions of an inner container of the water heater are adopted by different operating modes; the water heater is controlled to start heating or to stop heating according to the acquired detection temperature. Through the water heater and the control method and device of the water heater, the problem that a water heater in the prior art is prone to causing energy waste is solved, and then the effects of improving the heating efficiency of the water heater and reducing heat losses are achieved.

The invention discloses a solar energy coupling air source heat pump integrated air conditioning system and a heating and refrigerating method thereof. A solar evaporation heat collector is arranged on the inner surface of a shell of an outdoor unit of a solar energy air source heat pump, an indoor unit of the air source heat pump is arranged in a heating room, and a capillary copper pipe mesh radiation heating layer of the air source heat pump is arranged on a base layer of a heating floor and regulated and controlled through a control system and circulation pipelines of the control system to achieve solar energy coupling air source heat pump integrated heating and refrigerating. According to the solar energy coupling air source heat pump integrated air conditioning system and the heating and refrigerating method thereof, thermal field coupling is performed on solar energy and the air source heat pump, functional advantage complementation optimization of the solar energy and the air source heat pump is achieved by controlling the coupling system, the initial investment and operation cost of the system is further lowered, and the function guarantee performance and using comfortableness of the system are improved.

The invention discloses a frost-free outdoor unit of a refrigerating heat pump type air conditioner. The frost-free outdoor unit of the refrigerating heat pump type air conditioner comprises an outdoor unit housing, an evaporator, a blower, an intermediate separating plate, a compressor and variable-frequency electrical control module space, a variable-frequency electric control box and a compressor. The frost-free outdoor unit of the refrigerating heat pump type air conditioner is characterized in that an induced air channel air inlet is formed in an air outlet of the blower; the plane formed by the air outlet of the blower is treated as a projecting surface, and the projections, on the projecting surface, of the plane formed by the induced air channel air inlet and the plane formed by the air outlet of the blower, can form an overlapped surface; an induced air channel passes through the intermediate separating plate to communicate with the compressor and variable-frequency electric control module space; an air collecting cover which is connected with a heating air supplying pipe is arranged on the outdoor unit housing section in the compressor and variable-frequency electric control module space; air from the blower can enter the compressor and variable-frequency electric control module space through the induced air channel; the air sequentially flows through the compressor and the variable-frequency electric control box and then enters the air collecting cover to be conveyed to an air feeding side of the evaporator through the heating air supplying pipe so as to be exhausted. The frost-free outdoor unit of the refrigerating heat pump type air conditioner has the characteristics of frost-free heating, dispersing heat of a variable-frequency electric control module and the compressor, and being high in evaporating heating capacity, and high in air conditioning energy efficiency.

The invention provides a solar seawater desalting plant which consists of a disc type Stirling solar power system, a Stirling heat pump seawater desalination system, a seawater supply system, a fresh water transportation system, a sea salt storage and transportation system, a power transmission and distribution system and an automatic control system. Solar energy is firstly transformed into electric energy by a heat accumulation type Stirling solar generator, and then the electric energy is used for driving a Stirling heat pump to simultaneously heat and evaporate seawater and condense water vapor so as to separate the seawater into fresh water and sea salt. Since a heat engine of the disc type Stirling solar power system is high in efficiency and the Stirling heat pump is large in heating coefficient, due to the advantage superposition of the disc type Stirling solar power system and the Stirling heat pump which are combined, the utilization rate of seawater resources is high, the yield of the fresh water is high, the water quality is good, no emission is caused and the production cost is low. Being connected with an external power grid, the power transmission and distribution system can be replenished with power from the external power grid when the sunshine is not enough so as to guarantee normal proceeding of seawater desalination.

The invention discloses a mid-deep bed terrestrial heat source heat pump system. A mid-deep bed terrestrial heat in-well heat exchanger is mounted in a rock-soil layer; the mid-deep bed terrestrial heat in-well heat exchanger comprises an outer sleeve and an inner sleeve; the bottom end and the side wall of the outer sleeve are closed, the inner sleeve is placed in the outer sleeve, and the opening in the bottom end of the inner sleeve communicates with the bottom of the outer sleeve; the upper port of the outer sleeve communicates with a circular medium inflow pipeline; the upper port of the inner sleeve communicates with a circular medium outflow pipeline; the other ends of the circular medium inflow pipeline and the circular medium outflow pipeline communicate through an evaporator side of a high-temperature heat source type water source heat pump host machine; and a heat source side circulating pump is arranged in the circular medium outflow pipeline for driving a circular medium to flow downward along a gap between the inner wall of the outer sleeve and the outer wall of the inner sleeve. The mid-deep bed terrestrial heat source heat pump system disclosed by the invention only exchange mid-deep terrestrial heat energy on the premise of not extracting underground hot water, so that the mid-deep bed terrestrial heat is fully utilized to supply heat to a ground building.

The invention discloses an electro-magnetic induction heating rice cooker, relating to the technical field of kitchen appliances, and solving the problem about the low heating efficiency of the heating wire coil of the existing electro-magnetic induction heating cookware. The electro-magnetic induction heating rice cooker disclosed by the embodiment of the invention comprises a cooling fan, a protective cover and a heating coil, wherein the heating coil comprises a bottom heating coil and a side heating coil; the bottom heating coil is installed on the bottom part of the protective cover; the side heating coil is installed on the bottom side wall of the protective cover in an intertwining way; a plurality of support ribs arranged along the radial direction are arranged on the side wall of the protective cover; the side heating coil is erected on the support ribs; the clearances between the side heating coil and the side wall of the protective cover form a heat dissipation passage; the side heating coil is formed by the harnesses of flat wires in the intertwining way; a slot is formed on each support rib; and the flat wires are plugged into the slots. The electro-magnetic induction heating rice cooker is mainly used as the cookware, including electro-magnetic heating rice cookers, electro-magnetic heating electric pressure cookers and the like.

The invention relates to a four-pipe energy elevator and water chilling unit coupled air conditioning system provided with double water collecting and distributing devices and a using method of the air conditioning system. The system comprises a water chilling unit, a four-pipe energy elevator, an outdoor side heat exchange system, a first air conditioner cold water circulating pump, a second airconditioner cold water circulating pump, a cold water collector, a cold water distributor, an air conditioner cold water system constant-pressure device, an air conditioner hot water circulating pump,a cold/hot water collector, a cold/hot water distributor, an air conditioner hot water system constant-pressure device, a switching valve and a differential pressure bypass valve set; and the four-pipe energy elevator and water chilling unit coupled air conditioning system provided with the double water collecting and distributing devices is constructed by using the four-pipe energy elevator andsimultaneously arranging the air conditioning cold water collecting and distributing device, the air conditioning hot water collecting and distributing device and the switching valve. With adoption ofthe system, the defect that a traditional two-pipe air conditioning system composed of the water chilling unit and a heat pump unit cannot supply cold and heat at the same time is overcome, the demands for cold supply and heat supply in winter can be met more efficiently, conveniently and flexibly in an energy-saving mode, and the indoor comfort degree is increased.