81results about How to "Reduce defrosting energy consumption" patented technology

The invention provides a method for manufacturing reconstituted wood. Rotary cut is carried out on the raw wood for preparing a veneer or a veneer strip, defibering is carried out on the veneer, the forming points and/or wood bunch shades or wood bunches of striation crack are formed along the natural texture of wood on the veneer, then dipping, drying and hot pressing for molding the reconstituted wood are carried out. Compared with the prior art, the method of the invention solves the problem that wood bunch is irregular; the rate of utilizing wood and production efficiency of wood bunch are improved; defibering process is simplified and energy consumption for defibering is lowered. The process facilitates the cracks on the wood bunch shades and wood bunches to be very even and facilitates the dipping of wood bunch shades or wood bunches to be very even in the following dipping process; the product problems such as warp, deformation, jump fibre, and the like, are overcome, which are aroused by uneven defibering in making wood bunches from raw wood directly in the prior art, and the boards that the surface is very smooth, the mechanical performances such as stiffness and intensity, and the like, are higher than the raw material itself are made, therefore the fast-growing forest wood with worse performances and wider source can be made into the products of reconstituted wood which can compare beauty with noble hardwood.

The invention relates to a fin type evaporator which comprises a fixed plate, single column or multiple columns of refrigerant coil pipes mounted on the fixed plate and a plurality of fins sheathed on the refrigerant coil pipes, wherein a groove is formed on each fin, a heater pipe clamp for defrosting is mounted in each groove, and each fin is provided with a hem for stably clamping a heater pipe along the edge of the groove. The invention further relates to a refrigerator using the evaporator. The fins of the evaporator are provided with the hems for clamping the heater pipes along the edges of the grooves, and the arrangement of the hems change the traditional line contact to the surface contact, thereby reducing the heat transfer resistance between the heater pipes and the fins, shortening the defrosting time, saving the defrosting energy consumption of the evaporator and mounting the heater pipes on the evaporator more firmly.

The invention discloses a multi-connected unit phase change energy storage hot liquid defrosting system and relates to the hot liquid defrosting system. The hot liquid defrosting system is designed against the problems that the defrosting system needs to absorb heat from a heating room during defrosting, thereby leading the room temperature to drop intensely; a four-way reversing valve carries out frequent reversion during the defrosting process, thereby affecting the service life; the defrosting speed is slow and the energy consumption is great. The four-way reversing valve is respectively communicated with a first main path and a third main path, the third main path is communicated with a gas-liquid separator, the gas-liquid separator is communicated with a compressor, the first main path is respectively communicated with a first branch pipeline and a second branch pipeline, an outdoor electronic expansion valve is connected with a second electromagnetic valve in parallel, a fourth electromagnetic valve and a subcooler are connected with a third electromagnetic valve and a phase change heat storage device in parallel, the subcooler is communicated with a fourth main path, the fourth main path is communicated with the gas-liquid separator, the first branch pipeline and the second branch pipeline are communicated with a second main path, a liquid storage device is arranged on the second main path, and the second main path is communicated with an indoor unit. The hot liquid defrosting system is used for multi-connected unit defrosting.

The invention discloses a novel frost-free air source heat pump system with a dehumidifying rotating wheel. The novel frost-free air source heat pump system comprises a refrigerant loop, an indoor side air loop, an outdoor side air loop and the dehumidifying rotating wheel for connecting the outdoor side and the outdoor side, wherein the dehumidifying rotating wheel is used for feeding water vapor of outdoor air into the indoor, so that on one hand, humidity of air on the surface of an outdoor heat exchanger is reduced, and the frost-free air source heat pump is realized; on the other hand, indoor air is humidified to improve moisture content of a heating room while frosting is restrained, thereby achieving double purposes. In summer, the dehumidifying rotating wheel can be used for taking away humidity of the indoor, so that indoor dehumidifying is realized, and high-temperature air exhausted by the outdoor heat exchanger is utilized for regenerating a moisture absorbent. A novel circulating type defrosting system is mainly used for reducing loss of surface convection heat dissipation in a defrosting process, so that defrosting efficiency is improved, defrosting time is shortened, and defrosting energy consumption is reduced. Meanwhile, the dehumidifying rotating wheel can be used for feeding water vapor generated in the defrosting process into the indoor, so that indoor air quality is improved.

The invention provides a refrigerator and a control method thereof. The control method comprises the following steps: determining whether the refrigerator is overloaded or not; if the refrigerator is overloaded, when the accumulative refrigerating time of the refrigerator in overloaded state is larger than a first preset time, stopping refrigeration and performing defrosting, wherein the first preset time is smaller than a preset defrosting interval time of the refrigerator; and if the refrigerator is not overloaded, adjusting the defrosting interval time of the refrigerator according to door opening times of the refrigerator. The control method provided by the embodiment of the invention has the advantage that while the energy consumption of defrosting is reduced, sufficient defrosting is ensured, and thus the performance of the refrigerator is improved.

The invention provides a defrosting method of a variable-frequency air source heat pump unit. The defrosting method comprises the following steps that when a defrosting condition is reached, a compressor is reduced to the lowest frequency and kept for 5 seconds, a defrosting mode is started, the frequency of the compressor is increased to the defrosting frequency, the expansion opening degree is adjusted to the defrosting opening degree, then the defrosting frequency is reduced by 5Hz every 30 seconds, the defrosting opening degree is reduced by 4%, and the adjustment is stopped until the frequency is reduced to the defrosting lower limit frequency; and the air exchange temperature, the unit high-pressure value and the defrosting duration are monitored, when any one of the three parametersexceeds a set value, the unit exits the defrosting mode, the frequency of the compressor is reduced to the lowest frequency and kept for 5 seconds, a fan is started and waits for 5 seconds, and the unit is switched back to normal heating. The method can reduce the defrosting switching impact of the air source heat pump, improves the unit safety, and reduces the noise. Meanwhile, the real-time matching of the defrosting heat demand and the unit heat supply can be kept, the total defrosting time is shortened, and the defrosting energy consumption is reduced.

The invention provides a heat pump air conditioner provided with a thermal storage defrosting humidification device based on existing defrosting water. The air conditioner comprises an air conditioning device and is characterized in that the air conditioner further comprises the thermal storage defrosting humidification device, the thermal storage defrosting humidification device is arranged belowan outdoor heat exchanger of the air conditioning device, a water collecting port of the thermal storage defrosting humidification device is located below the outdoor heat exchanger, a water outlet of the thermal storage defrosting humidification device is located on the side surface of the outdoor heat exchanger, one end of the thermal storage defrosting humidification device communicates with acapillary tube of the air conditioning device, and the other end of the thermal storage defrosting humidification device communicates with an indoor heat exchanger of the air conditioning device. According to the heat pump air conditioner, defrosting water is utilized for storing excessive heat of a unit during heat supply in winter, during defrosting, the high-temperature defrosting water is sprayed to a frost layer for defrosting firstly and then used as the low-temperature heat source of the unit so as to evaporate retained defrosting water to dryness or to perform deicing, and meanwhile,excessive defrosting water can also be used for indoor humidification; and during refrigerating in summer, generated condensate water is used for indoor humidification or used as part of the cold source. According to the heat pump air conditioner, the defrosting time is short, no indoor heat is sucked away, a humidification function is also achieved, and wasting caused by discharging of the largeamount of defrosting water and condensate water is avoided.

The invention discloses a defroster used for an air conditioning system. The defroster comprises a regenerator, wherein the regenerator is internally provided with two groups of heat exchangers which can output heat, and the heat exchangers are respectively connected to an air conditioning system pipeline through pipelines, wherein an outlet access point of a first heat exchanger is positioned between a compressor inlet and a four-way valve of the air conditioning system, and an inlet access point of the first heat exchanger is positioned between an indoor machine and an expansion valve; an outlet access point of a second heat exchanger is positioned between the four-way valve and an outdoor heat exchanger, and an inlet access point of the second heat exchanger is positioned between the indoor heat exchangers and the expansion valve; connecting pipelines of the first heat exchanger and the second heat exchanger are respectively connected in series with a control valve I and a control valve II, and a control valve III is connected in series with the indoor heat exchangers and the expansion valve of an air conditioner circulating pipeline and is arranged between the inlet access points of the two heat exchangers; the regenerator is internally provided with a third heat exchanger used for introducing heat; and the introduced heat is solar energy, the energy utilization ratio is improved in a defrosting process, and meanwhile, the loss of an air conditioner is reduced.

The invention relates to a defrost control method of an air source heat pump system, and relates to the technical field of air conditioning refrigeration and heat pumps. The defrost control method comprises the steps of when a system runs and one unit reaches to a defrost condition, naming the unit as a unit a, and carrying out the following judgment: (i) when no unit is at a standby mode, enabling the unit a to enter a normal defrost mode; (ii) when the other unit is at a standby mode, naming the unit as a unit b; if the state of the unit b is not 'to be defrosted', closing the unit a, enabling the unit a to enter the standby mode, and meanwhile, enabling the unit b to start heating for running; and otherwise, keeping the unit a to be at a heating mode, and then carrying out correspondingcontrol; and (iii) when two and more that two units are at the standby mode, judging and selecting the units, naming the selected units as units b, and carrying out follow-up control according to thestep as shown in (ii). The method provided by the invention can be used for carrying out defrost control on a multiple air source heat pump unit combined operation system, and effectively solves various problems caused by defrosting of a current air source heat pump system through adjusting a defrost control logic.

The invention relates to a finned tube evaporator for an air-cooled refrigerator and an air-cooled refrigerator. The evaporator is arranged in an evaporator cavity of the air-cooled refrigerator and comprises a plurality of layers of finned tubes, each finned tube is composed of an evaporator tube and a plurality of fins; along the vertical direction, the number of the evaporator tubes on each layer of finned tubes is unequal. According to the finned tube evaporator, the number of the tubes gradually increases from the bottom to the top, the number of the windward pipes of the evaporator is increased, the problem that a large amount of frost is accumulated at the bottom of the evaporator can be effectively relieved, the heat generated by the electric heater in the defrosting process can rapidly reach the top of the evaporator, so that the defrosting synchronism is improved, and the defrosting energy consumption is reduced.

The invention discloses a method and control system for detecting defrosting of an air source heat pump based on infrared thermal imaging. The system comprises a compressor, a gas and liquid separator, a four-way reversing valve, an indoor heat exchanger, an electronic expanding valve, an outdoor heat exchanger, an infrared thermal imaging instrument, a digital processor, a memorizer, a video outputting device, a temperature and humidity recorder and other parts, wherein the infrared thermal imaging instrument, the digital processor and the memorizer are relevant to defrosting control. According to the system, by means of a reverse cycle work condition and control logistics, defrosting of the system is achieved; and by means of the system and the method, the mistaken defrosting condition can be effectively avoided, the defrosting energy consumption is reduced, and the beneficial effects of energy conservation and environmental protection are achieved. The infrared thermal imaging instrument is dual-purpose, can output surface temperature and surface condition common videos, can control the defrosting work condition in winter, and can detect the blockage condition of an outdoor unitin summer. By means of the system, not only can the defrosting condition be controlled, the outdoor unit condition videos can also be uploaded and output, and a worker can perform overhauling conveniently.

The invention discloses a natural defrosting method for an air-cooled refrigerator. The natural defrosting method comprises the following steps: after the cumulative running time of a compressor reaches TDFTACC h, an electrical control device of a refrigerator controls the refrigerator to enter the second step (defrosting preparation step); preparing for defrosting; performing defrosting in the way that a refrigeration air door and a refrigerating blower are simultaneously switched on and switched off after working for t min, and then electrical heating is started for defrosting. According to the natural defrosting method for the air-cooled refrigerator, the conventional defrosting technique is adopted to realize fine adjustment of the defrosting process; within the energy-saving defrosting time, circulation of passing airflow is utilized, air in a refrigerating chamber can be utilized to defrost an evaporator, and meanwhile, the cold quantity of a frost layer at the evaporator is utilized to reduce the temperature of the refrigerating chamber, so that the energy-saving purpose is achieved; compared with the prior art, frequent defrosting is not needed, the energy consumption of electrical heating is reduced and the condensed frost can be radically defrosted.

The invention discloses a refrigerator and a control method thereof. The refrigerator includes a refrigerator body, a door body and a refrigerating system, wherein the refrigerating system includes a compressor, a condenser, a switch unit, a refrigerating throttler, a freezing throttler, a refrigerating evaporator, and first and second freezing evaporators, wherein the inlet of the refrigerating throttler is connected with the first outlet of the switch unit; the inlet of the freezing throttler is connected with the second outlet of the switch unit; the inlet of the refrigerating evaporator is connected with the outlet of the refrigerating throttler; the inlet of the first freezing evaporator is connected with the outlet of the refrigerating evaporator; the outlet of the first freezing evaporator is connected with the inlet of the compressor; the inlet of the second freezing evaporator is connected with the outlet of the freezing throttler, and the outlet of the second freezing evaporator is connected with the inlet of the compressor; and both the first and the second freezing evaporators are arranged outside the freezing chamber. According to the embodiment provided by the invention, the refrigerator has the advantages of high refrigerating efficiency, low energy consumption and less frosting amount.

The invention discloses an air source heat pump defrosting device based on a multi-effect synthetic action at an initial frosting stage. The air source heat pump defrosting device comprises a refrigerant circuit, an air circuit and a defrosting speed regulation system. At the initial frosting stage, a frost layer is sparse and short or is in a non-frozen liquid drop state, thereby being easy to remove. According to the air source heat pump defrosting device, the growing characteristics of the frost layer at the initial frosting stage are fully utilized, high-temperature, high-pressure and dry air directly acts on the finned surface of a second heat exchanger through air supply nozzles, and therefore quick defrosting with the multi-effect synthetic action including blowdown, thawing and evaporation is achieved. Meanwhile, the defrosting speed regulation system can control the acting time of the high-temperature and high-pressure air on the finned surface by changing the vertical movement speed of the air supply nozzles along the second heat exchanger so as to achieve the effect that the frost layer at different frosting degrees is completely removed. The air source heat pump defrosting device is low in defrosting energy consumption, normal heating running of a heat pump system is not influenced in the defrosting process, the heat supply time of the heat pump system is prolonged, and the heat supply efficiency of the heat pump system is improved.

The invention discloses a superhydrophobic fin type heat exchanger based air source heat pump with a detached defrosting device and a working method thereof. The air source heat pump comprises a gas-liquid separator, a compressor, a four-way commutator, a first heat exchanger, a second heat exchanger, a first fan, a liquid storing branch circuit, a defrosting water loop and a defrosting refrigerating agent conveying branch circuit; the defrosting water loop comprises a defrosting device, a first electromagnetic valve and a second electromagnetic valve; the defrosting refrigerating agent conveying branch circuit is installed between the refrigerating agent output end of the compressor and the first heat exchanger, and an electric regulating valve is installed on the defrosting refrigeratingagent conveying branch circuit; the defrosting device is located under the first heat exchanger, and frost layers condensed on the surfaces of fins of the first heat exchanger can exactly fall to thedefrosting device; and the heat, for melting the frost layers, of the defrosting device is from the heat released through supercooling of a refrigerating agent output by a refrigerating agent conveying flow channel arranged on the inner side of the second heat exchanger. According to the superhydrophobic fin type heat exchanger based air source heat pump with the detached defrosting device and the working method thereof, the frost layers on the surfaces of the fins overall fall off in the defrosting process, the defrosting time is significantly shortened, and defrosting energy consumption canbe effectively reduced.

The invention belongs to the field of refrigeration container defrosting, and relates to a refrigeration container defrosting system and a defrosting method. The refrigerated container defrost systemcomprises a box, an evaporator, a hot air inlet, a hot air outlet, an in-box air supply port, an in-box air return port, a control system and a switch execution element. The evaporator is arranged onthe inner wall of the top of the box and provided with a fan. The hot air inlet and the hot air outlet are formed in the upper and lower parts of the rear wall of the box respectively and located on the two sides of the evaporator respectively. The in-box air supply port and the in-box air return port are formed in the upper and lower portions of the front wall of the box respectively and locatedon the two sides of the evaporator respectively. The control system starts or releases a defrosting mode by controlling the switch execution element. The air defrosting technology is utilized, so thatthe defrosting efficiency can be improved, the energy consumption for defrosting is reduced, and temperature fluctuation in a refrigerating container is reduced.

The invention discloses a technical scheme of a parallel type mutual-assistance defrosting air source heat pump water heater. The parallel type mutual-assistance defrosting air source heat pump water heater is characterized in that a unit is provided with two or more refrigerant loop systems, and defrosting is sequentially performed in two groups. Air inlet ducts of the two systems are isolated through a partition plate. Water inlets of hot water heat exchangers of the systems are connected with a water outlet of a circulating water pump in parallel. Water outlets of the hot water heat exchangers are each divided into two paths of connectors; after being connected with a constant temperature water outflow valve, one path of connector is connected to a hot water outflow main pipe in parallel, and after being connected with a check valve, the other path of connector is connected to a circulating water main pipe in parallel; the circulating water main pipe provided with a circulating water regulating valve and a water inflow pipe are connected to a water inlet of the circulating water pump together in parallel, and a parallel type hot water heat exchange system for hot water inner circulation is formed; during defrosting, the defrosting system is switched to bypass hot gas or reverse circulating dedusting, the other system continues to perform heating circulation, the two systems perform defrosting in a mutual-assistance manner through hot water inner circulation, the defrosting problem of the air source heat pump water heater is thoroughly solved, and the worry that defrosting is not thorough is avoided forever; and in addition, due to the addition of the system of a supercooler, efficiency can be improved by 15%.

The invention discloses an air conditioner. The air conditioner comprises a compressor, an indoor side heat exchanger, an outdoor side heat exchanger, a throttle device, a four-way valve, a reversingassembly and a connecting tube, wherein a compression assembly of the compressor is provided with a first gas suction hole, a first gas exhaust hole, a second gas suction hole and a second gas exhausthole; a first gas cylinder and a second gas cylinder are connected in series; a connecting channel is arranged between the first gas exhaust hole and the second gas suction hole; the outer side heatexchanger comprises at least two outdoor heat exchange units which are arranged in parallel; the throttle device is separately connected to the indoor side heat exchanger and the outdoor side heat exchanger; the reversing assembly comprises at least two switchover valves; the reversing assembly is connected between the outdoor side heat exchanger and a third valve port of the four-way valve; and one end of the connecting tube is connected to the reversing assembly, and the other end of the connecting tube is connected to the first gas exhaust hole. The air conditioner provided by the embodiment of the invention reduces influences, on an indoor temperature, of the air conditioner in a heating defrosting process, improves defrosting effect and comfort of the air conditioner, and reduces defrosting energy consumption of the air conditioner.

The invention relates to a centralized air-conditioner exhausted-air heat/cold energy recovery system. The system aims to recover heat/cold energy of exhausted air of an air conditioner and prevent an air-cooled heat pump unit from frosting in winter so as to improve the unit efficiency and the comprehensive energy-saving effect of the air conditioner. By means of the heat/cold energy recovery system, the air exhausted by the air conditioner is introduced into an air inlet end of the air-cooled heat pump unit directly. The feature of an air conditioner system that the exhausted-air temperature is lower than the outdoor temperature in summer, the exhausted-air temperature is higher than the outdoor temperature in winter is adopted, the exhausted air is introduced into the air inlet end of the air-cooled unit, the effects of heat dissipation in summer and cold dissipation in winder of the heat pump unit are improved greatly, the refrigeration efficiency and heating efficiency of the unit are improved, and energy consumption is saved; meanwhile, the hot air exhausted from a room in winter can prevent the heat pump unit from frosting effectively, the defrosting energy consumption of the unit is saved, and comfort in the room in winter is improved. Furthermore, only a connection air pipe needs to be additionally arranged on the heat energy recovery device, and the investment is saved greatly compared with a conventional heat recovery mode of using a heat exchanger.

The invention discloses an air conditioner and refrigerator integrated machine which comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and a refrigerator. The refrigerator comprises a refrigeration zone and an unfreezing zone, the refrigeration zone comprises a frozen zone and a cold storage zone, the unfreezing zone is arranged in correspondence with the frozen zone, a bypass pipe is connected between the compressor and the unfreezing zone, an exhaust opening of the compressor is connected to an inlet of the unfreezing zone through the bypass pipe, and an air return opening of the compressor is connected to an outlet of the unfreezing zone through the bypass pipe. In addition, an operational control method of the air conditioner and refrigerator integrated machine is provided. According to the air conditioner and refrigerator integrated machine and the operational control method, electric heating unfreezing is not needed, the unfreezing cost can be saved, the unfreezing efficiency can be improved, the unfreezing energy consumption is reduced, and the problems in safety caused by electric leakage are avoided.

The invention relates to a heat storage defrosting system for a cold storage air cooler. The heat storage defrosting system comprises a refrigerating device, a heat storage device and a heat release device, wherein the refrigerating device comprises a compressor, a heat storage heat exchanger, a condenser, a throttling device and an evaporator which are sequentially arranged; the evaporator is connected into the compressor, and a refrigerating circulation loop is formed; the heat storage device comprises a heat storage tank, a heat storage pump, a heat storage heat exchanger and a heat storagevalve which are sequentially arranged; the heat storage valve is connected into the heat storage tank, and a heat storage circulation loop is formed; the heat release device comprises a heat storagetank, a heat release pump, a heat release heat exchanger and a heat release valve which are sequentially arranged; the heat release valve is connected into the heat storage tank, and a heat release circulation loop is formed; the refrigerating device and the heat storage device conduct heat exchange in the heat storage heat exchanger; and the refrigerating device and the heat release device conduct heat exchange through the evaporator and the heat release heat exchanger. The invention further relates to a cold storage. According to the heat storage defrosting system and the cold storage, energy consumption can be reduced, operation is more stable, temperature fluctuation in the cold storage is reduced, and the heat storage defrosting system and the cold storage belong to the technical field of refrigerating and quick freezing.