71results about How to "Defrost thoroughly" patented technology

The invention discloses a dual heat-source heat-pump hot water device with an extremely simple refrigerating loop. The device is characterized by mainly comprising a compressor, a hot water condenser, a wind heat exchanger, a water heat exchanger, a four-way valve, a bidirectional throttle and the like, wherein a high pressure inlet of the four-way valve is connected with the outlet of the hot water condenser, and the other three ports thereof are connected with air inlets of the wind heat exchanger, the water heat exchanger and the compressor respectively; other ports of the wind heat exchanger and the water heat exchanger are connected with the bidirectional throttle; the exhaust port of the compressor is connected with the inlet of the hot water condenser, and is connected with high pressure air inlet of an electromagnetic pilot valve of the four-way valve; four functions of manufacturing hot water by utilizing water source or air energy and providing air-conditioning cool water by utilizing air-cooling or heating water can be realized by only switching the four-way valve, defrosting can be performed completely and quickly; and a water pre-heater is added to the device to reclaim the heat of waste hot water. The heat pump has the advantages of dual heat sources compensation and wide application range, has multiple functions, extremely simple structure, extremely convenient switching and over 5 of annual comprehensive energy efficiency ratio, and has great popularization value.

The invention provides an uninterrupted heating-defrosting heat-pump type air conditioner, which comprises a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, an electric refrigerant heater and a gas-liquid separator, wherein the four-way valve is communicated with one end of the outdoor heat exchanger; an outdoor electronic expansion valve is arranged between the other end of the outdoor heat exchanger and one end of the indoor heat exchanger; a first check valve, a capillary tube and a first electromagnetic valve, which are in sequential serial connection, form a first circuit branch; one end of the first circuit branch is communicated with a pipeline between the other end of the outdoor heat exchanger and the outdoor electronic expansion valve; the other end of the first circuit branch is communicated with the pipeline between the other end of the indoor heat exchanger and a fourth interface of the four-way valve; a second electromagnetic valve and a second check valve in serial connection form a second circuit branch; one end of the second circuit branch is communicated with the pipeline between the outdoor electronic expansion valve and one end of the indoor heat exchanger; and the other end of the second circuit branch is communicated with the pipeline between a third interface of the four-way valve and one end of the gas-liquid separator. The air conditioner has the characteristics of stable indoor heating effects and thorough defrosting.

The invention discloses a constant temperature flow control method for a heat pump water heater and a double-system unit using the same, relates to a fluid heater utilizing a heat pump and a control method thereof, and particularly relates to a constant temperature flow control method for the heat pump water heater and a double-system primary heating type heat pump water heater unit using the method. The double-system primary heating type hot pump water heater unit comprises a heat pump system A, a heat pump system B, a water supply heating system C and a constant temperature flow control device, wherein PID regulation on water flow is performed according to outlet water temperature; an outlet water temperature set value is set as a target value, and the opening of a constant temperature flow valve is controlled according to a checking value of the outlet water temperature so as to adjust the water flow; when the temperature of a water box is low, a constant temperature water pump and a compressor are started, and the unit operates at constant temperature; when inlet water temperature is too high, a bypass-valve is opened; and one system in a double-system generates a fault and stops operation, the outlet water set temperature is down-adjusted, the water flow of a heat pump unit is guaranteed, and the condensation effect and heating capacity and energy efficiency of the unit are improved, so that the other system without the fault is safely and stably operated in an efficient manner.

The invention provides a defrosting control method for an air source heat pump unit. The air source heat pump unit is provided with an outdoor ambient temperature sensor, an outdoor ambient humidity transmitter and a surface air cooler fin temperature sensor. A control unit of the air source heat pump unit is connected with the outdoor ambient temperature sensor, the outdoor ambient humidity transmitter and the surface air cooler fin temperature sensor. The defrosting control method comprises the following steps that 1, the dew point temperature is calculated through the outdoor temperature and the outdoor humidity; 2, the air source heat pump unit enters into first defrosting; 3, the air source heat pump unit enters into automatic defrosting; and 4, the air source heat pump unit exits defrosting. The defrosting control method for the air source heat pump unit has the beneficial effects that in a region with the large humidity, the air source heat pump unit is accurately controlled toenter into and exit defrosting, so that accumulating of frost on a surface air cooler is avoided, and defrosting is clean and thorough; and when the temperature is low, whether the air source heat pump unit needs to enter into defrosting or not is judged accurately, so that the situation that the unit frequently enters into defrosting is avoided, intelligent judgment and automatic adjustment of the defrosting time and interval are achieved, the heating effect of the air source heat pump unit is improved, and energy consumption is low.

The invention discloses an air source ultralow temperature heat pump unit provided with a supercooling frosting-restraining heat exchanger. The air source ultralow temperature heat pump unit comprises an enhanced vapor injection compressor, a user side heat exchanger, a vapor and liquid separator, a heat source side heat exchanger, a plate heat exchanger and refrigerant pipelines used for connecting the enhanced vapor injection compressor, the user side heat exchanger, the vapor and liquid separator, the heat source side heat exchanger and the plate heat exchanger. The air source ultralow temperature heat pump unit solves the problem that in a winter heating and hot water obtaining mode, an outdoor heat exchanger is prone to frosting under the environment where the temperature is low and definite humidity is reached, and consequently the working performance of a unit is affected seriously. The air source ultralow temperature heat pump unit solves the problem that under the working condition that the air source ultralow temperature heat pump unit is used for heating and hot water making, an outdoor side heat exchanger is very prone to incomplete defrosting and consequently frost deposit is caused. By the adoption of the supercooling frosting-restraining heat exchanger, defrosting can be conducted effectively and thoroughly for a long time, and a frost layer is restrained from being generated on the bottoms of the heat exchangers.

The invention discloses a bypass defrosting device with four-port valves, which comprises a compressor, a gas-liquid separator, a high-pressure reservoir, at least two four-port valves, at least two groups of heat exchanging components in a condensing side, and at least two groups of heat exchanging components at an air side. The first port of each four-port valve is connected with the vent of the compressor, and the second port of each four-port valve is connected with one end of each heat exchanging component at the condensing side, the other end of the heat exchanging component is connected with the high-pressure reservoir; one end of each heat exchanging component at the air side is connected with the high-pressure reservoir, the other end of each heat exchanging component at the air side is respectively connected with the third port of the corresponding four-port valve, the input end of the gas-liquid separator is connected with the fourth port of each four-port valve, and the output end of the gas-liquid separator is connected with the intakeport of the compressor. The bypass defrosting device with the four-port valves has small system pressure fluctuation during defrosting, higher reliability and stability, good defrosting effect, short defrosting time and simple structure, and can implement heating and defrosting at the same time.

A defrosting method for air-cooled heat pump system features that the condensing pressure is controlled by pressure difference control valve and/or condensing pressure regulating valve. Its defrosting device is composed of air heat exchanger, liquid storage unit, pressure controller, and one-way valve.

The invention provides a double heating, refrigerating, water heating and dehumidifying system. The system is characterized by comprising a multifunctional air conditioning unit and a hot-water heat exchange system with a hot-water radiator, wherein the multifunctional air conditioning unit with a five-cycle hot-water air conditioner has the functions of hot wind making, water heating, air cooling and dehumidifying; the multifunctional air conditioning unit consists of a compressor, two four-way valves, three heat exchangers and a rectification three-way throttle; and a refrigerating agent loop connection is formed in a way that first, second, third and fourth ports of the first four-way valve are connected with the compressor, the first port of the second four-way valve, an indoor air heat exchanger and a gas-liquid separator respectively; second, third and fourth ports of the second four-way valve are connected with an outdoor air heat exchanger, a hot water heat exchanger and the gas-liquid separator; the gas-liquid separator is connected with the compressor; the outlet of the hot water heat exchanger is connected with the inlet of a third one-way valve and the outlet of a third solenoid valve; the two ends of a first capillary tube are connected with the parallel connected end of outlets of three one-way valves and the inlet of the third solenoid valve and the parallel connected end of the inlets of the first and second solenoid valves; the two ends of a second capillary tube are connected with the outlet of the first solenoid valve, and the parallel port of the inlet of the first one-way valve and the outdoor air heat exchanger; and the outlet of the second solenoid valve is connected in parallel with the inlet of the second one-way valve and the indoor air heat exchanger.

The invention provides an air conditioner, a defrosting control method and a defrosting control system. The air conditioner comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, a four-way valve, a throttling device, a heat accumulating assembly and a stop valve, wherein the heat accumulating assembly is arranged between the four-way valve and the outdoor heat exchanger, comprises a heat accumulator, a water feeding device, an electric heating piece, a first temperature detecting device and a second temperature detecting device; and the stop valve is arranged between the four-way valve and the outdoor heat exchanger, and is connected in parallel with the heat accumulating assembly. According to the air conditioner disclosed by the invention, the heat accumulating assembly enables the air conditioner to perform defrosting under a heating mode, so that the favorable defrosting effect and the favorable heating effect are guaranteed, and the usage comfort of users is improved; when heat accumulating materials are short of water and the defrosting effect is poor, the water can be supplied by the water feeding device, and the four-way valve is switched, so that the air conditioner performs defrosting under a refrigeration mode, and the favorable defrosting effect is guaranteed; and after water supply is completed, the four-way valve is switched, so that the air conditioner performs defrosting under the heating mode, and the usage comfort of the users is improved.

The invention relates to a refrigeratory refrigerating system in a cold chain. The refrigeratory refrigerating system in the cold chain is internally provided with at least two air coolers; when the air coolers act as evaporators together in refrigeration, a refrigeration circulation system is realized; and when the air coolers act as condensers and evaporators in turn, a defrosting circulation system for defrosting step by step is realized. The refrigeratory refrigerating system in the cold chain is controlled by a micro computer control system to operate the refrigeration circulation system or the defrosting circulation system, overcomes the defects of the existing refrigeratory defrosting mode, and improves the refrigeratory defrosting efficiency.

The invention discloses a heat-pump water heater. The heat-pump water heater comprises a compressor, a condenser, a throttling assembly, an evaporator, a water pumping device, a shunting device, a temperature detection device and a control device. One end of the water pumping device is connected with a water inlet pipe, the other end of the water pumping device is connected with a water inlet of the condenser, and the water pumping device is used for pumping water into the condenser. The inlet end of the shunting device is connected with a water outlet of the condenser, one outlet end of the shunting device is connected with a water outlet pipe, the other outlet end of the shunting device is correspondingly connected with a water inlet of the evaporator, and the shunting device is used for shunting water flowing out of the condenser. The temperature detection device is arranged in the position of an evaporator working medium inlet and used for detecting the temperature T of the position of the evaporator working medium inlet. The control device is connected with the temperature detection device and the shunting device and used for controlling shunting of the shunting device according to the temperature T, and therefore defrosting can be conducted. The invention further discloses a defrosting control method of the heat-pump water heater. The defrosting control method achieves the purpose of defrosting and will not hinder water heating of the heat-pump water heater.

The invention discloses a thermostatic flow regulating device of a single-heating type heat-pump water heating unit and a control method of the thermostatic flow regulating device, relates to a control device for utilizing a fluid heater of a heat pump, in particular to a thermostatic flow regulating device for a dual-system single-heating type heat-pump water heating unit and a control method of the thermostatic flow regulating device. The thermostatic flow regulating device comprises a single chip microcomputer control unit, a temperature-sensing element, a switching signal element and a control signal output driving unit. The single chip microcomputer control unit is connected to a compressor, a water inlet electromagnetic valve, a thermostatic flow valve, a by-pass valve and a thermostatic water pump of the dual-system single-heating type heat-pump water heating unit through the control signal output driving unit. An outlet temperature set value is taken as a target value, opening of the thermostatic flow valve is controlled according to an outlet water temperature measured value, and water flow is regulated; when water tank temperature is low, the unit runs thermostatically; when inlet water temperature is over-high, the by-pass valve is turned on; when one of dual systems is faulted to stop running, outlet water set temperature is lowered so as to guarantee the other non-fault system to be capable of running efficiently, safely and stably.

The invention discloses a defrosting mechanism for side window glass of cars. The defrosting mechanism comprises a car side portion body used for installing the side window glass of the cars, and a defrosting device fixed to the car side portion body in a wall-mounted mode and arranged below the side window glass of the cars. The defrosting device comprises a case, a condensation heat dissipation device and a fan, wherein the condensation heat dissipation device and the fan are fixed inside the case. The heat dissipation device is composed of a spiral pipe body formed in a bending mode, and the two ends of the pipe body are respectively connected to a heating device. At least one air outlet towards the side window glass of the cars is formed in the upper end of the case. The spiral central line of the condensation heat dissipation device is arranged vertically, and the fan is arranged below the condensation heat dissipation device. The case is provided with an air inlet communicated with the fan. The defrosting mechanism for side window glass of the cars is small in size, light in weight, easy to use and convenient to install, and fills the gap of defrosting of an existing defrosting device for the side window glass of the passenger cars.

The invention discloses a cold accumulation type hot air defrosting refrigerating system and a heat accumulation type hot air defrosting heat pump system. The refrigerating system comprises a refrigerating loop. The refrigerating loop is at least formed by sequential communicating of a compressor, a condenser, a throttling device and an evaporator in series. A defrosting loop for defrosting of the evaporator and a cold accumulation evaporator are further arranged. The defrosting loop is at least formed by sequential communicating of the compressor, the evaporator, the throttling device and the cold accumulation evaporator in series. The refrigerating system can achieve stable, rapid and thorough defrosting, meanwhile, the cooling capacity obtained during defrosting can be recycled, the total running efficiency of the system is improved accordingly, and energy consumption is reduced.

The invention provides a heat accumulation component and an air conditioner. The heat accumulation component comprises a heat accumulator and at least one electric heating element, wherein the heat accumulator is provided with at least one fin and a cavity; the cavity is used for accommodating a heat accumulation material; the at least one electric heating element is arranged on the heat accumulator; the at least one fin is positioned at the periphery of the at least one electric heating element and is perpendicular to a cross section of the at least one electric heating element. According to the heat accumulation component provided by the invention, the condition that the heat accumulation material flows to be dispersed and further is liable to ice due to the parallelism of the fins and the cross sections of the electric heating elements is avoided; meanwhile, the phenomenon that a heat radiating effect is affected by fin deformation due to the fact that the heat accumulation material is iced and then expands is avoided, a refrigerant is effectively enabled to be uniform in heating and is subjected to sufficient heat exchange, further a good and stable defrosting effect and a heating effect are guaranteed, and the use experience of a user is improved; meanwhile, the service life of the fins is prolonged, the integral quality of the heat accumulation component is improved, and the use satisfaction degree of the user is improved.

The invention relates to the technical field of defrosting of air source heat pump water chilling units, in particular to frost restraining and defrosting equipment for an air source heat pump water chilling unit for different humidities and a frost restraining and defrosting control method. The air source heat pump water chilling unit and a frost restraining and defrosting device are arranged. The frost restraining and defrosting equipment is characterized in that an outdoor temperature sensor, an outdoor air relative humidity sensor, an evaporator temperature sensor, a video camera monitor,a surface air cooler fin photoelectric frost measuring sensor and a controller are arranged on the air source heat pump water chilling unit; the outdoor temperature sensor, the outdoor air relative humidity sensor, the evaporator temperature sensor, the video camera monitor and the surface air cooler fin photoelectric frost measuring sensor are connected with the frost restraining and defrosting device through the controller, and the frost restraining and defrosting device is controlled to work through the controller after detection numerical analysis of all the sensors. The frost restrainingand defrosting equipment and the frost restraining and defrosting method have the advantages that the method is simple, frost inhibition control has pertinence, the defrosting efficiency is high, andthe defrosting effect is good.

The invention relates to an easy-defrosting multifunctional heat pump water heater and solves a problem that a single air source and water source heat pump has to have both cooling and heating applications and meet different heat needs of all the year around and a frosting problem. The water heater comprises a refrigeration compressor, a fin-type air-cooled heat exchanger with a fan, and double-pipe heat exchangers A and B. An inlet side of the refrigeration compressor is serially connected with a gas-liquid separator. An outlet side of the refrigeration compressor is serially connected with a four-way valve A, a four-way valve B and the fin-type air-cooled heat exchanger with the fan and then forms a circulation loop through a one-way valve, a liquid vessel, a filter drier, level glasses, a three-way pipe and a four-way pipe. The device realizes four separated circulation systems, and can well realize full cooling and heating and supply heat meeting needs through different heat sources. The device has four functions of cooling, heating, making domestic hot water, and cooling and making domestic hot water. A process designed for the device can reasonably and reliably remove frost during operation in winter.

The invention discloses a temperature control device for yielding water of a single-heat type heat pump water heater. A pipeline is connected with a heat storage water tank, a tee-joint proportioning valve, a heating water heat exchanger, a water pump and a yielding water constant temperature control module connected with the heat storage water tank, wherein the yielding water constant temperature control module is connected with an ambient temperature probe, and controls the switching on and off of the tee-joint proportioning valve; and an opening in the A-B direction of the tee-joint proportioning valve is communicated with a water inlet end, and an opening in the B-C direction is communicated with the heating water heat exchanger. In addition, the invention also discloses a temperature control method, the temperature of the heat storage water tank, the ambient and the heating water heat exchanger are subjected to sampling detection, and according to different ambient temperatures, different yielding water temperature values can be set, the switching on-off degree of the tee-joint proportioning valve is adjusted, the water feeding amount is adjusted by the temperature control regulating valve, so that the yielding water temperature of the heating water heat exchanger can reach the set value. The temperature control device can run with safety, stability and high efficiency, and meanwhile, the engineering installation is simple, the cost is low, and the supplied hot water is constant.

The invention relates to the field of heat pump equipment and particularly relates to a heat pump water heater. Aiming at the problem that a heat pump water heater in a wet-cold region is difficult to be defrosted, the heat pump water heater provided by the invention is additionally provided with a second heater in a position opposite to an evaporator of an existing heat pump water heater, so that one part of hot water generated by the heat pump water heater exchanges heat with air which is to enter the evaporator in the second heater, so that the temperature of the air entering the evaporator is increased, and by virtue of reverse defrosting, the problem of frosting in winter in the wet-cold region can be effectively solved; furthermore, the heat pump water heater is low in cost and good in effect. The heat pump water heater provided by the invention can be widely applied to heating water systems in the wet-cold region in winter.

The invention discloses a defrosting device of an air conditioner, mainly comprising an electromagnetic control valve, a temperature sensor and an electromagnetic valve; in the case that defrosting is carried out, the electromagnetic valve is closed, and the electromagnetic control valve regulates the electromagnetic valve to open through the temperature sensed by the temperature sensor; and when the defrosting is not carried out, the electromagnetic control valve is normally closed. The defrosting device disclosed by the invention is additionally arranged into an air conditioning system, thus the circulating mass of a refrigerant can be increased during defrosting circulation, the heat exchange efficiency of the evaporator is improved, and finally the defrosting time is obviously shortened. Experiments show that when a four-way valve inverts to defrost, defrosting time can be shortened by 3-5 seconds through connecting one defrosting device of the air conditioner beside an expansion valve in parallel, the average operation efficiency of an air conditioner unit is improved by 8% in a low-temperature frosting working condition in winter, the electricity consumption of the air consumption can be saved and the comfortableness of users can be enhanced.

The invention discloses a practical multifunctional water-heating air-conditioner, characterized by comprising a three-way valve, a four-way valve, and a multi-loop throttle mechanism. The multifunctional water-heating air-conditioner realizes circulation of four functions of refrigeration, refrigeration and water heating, water heating, and hot gas production by using a compressor, an indoor air heat exchanger, an outdoor air heat exchanger, and a water-heating heat exchanger. The multi-loop throttle mechanism comprises a rectification circuit formed by four one-way valves, a main throttling element, and an auxiliary throttling element. When the throttling elements are thermostatic expansion valves, a thermal bulb is installed on a pipeline toward a compressor direction near the outlet of the outdoor air heat exchanger. By using quantity of heat of hot water and the bypass of a bypass defrosting solenoid valve, a refrigerating fluid defrosts. An exhaust capillary tube of a solenoid pilot valve of a three-way valve is communicated with a system low-pressure pipeline. A micro solenoid valve may be installed on the high-pressure capillary of the solenoid pilot valve of the four-way valve, the high-pressure capillary being connected with the exhaust pipe of the compressor, and the micro solenoid valve is shut down after switchover of the four-way valve. The refrigerating fluid of a circulation loop can be maintained to be stable in multifunctional circulation, and the water-heating air-conditioner has no inner leakage, and is high in efficiency.

The invention relates to an adjoining-pipe liquid spraying defrosting heat source tower heat pump device. The adjoining-pipe liquid spraying defrosting heat source tower heat pump device comprises a heat source tower body, a fin adjoining-pipe liquid supply pipe, a heat exchange coil, an exhaust fan, a plurality of fin adjoining-pipes, a plurality of coil adjoining-pipes, a main liquid supply pipe, a plurality of fins, an antifreeze solution pool, a liquid supply check valve, an antifreeze solution liquid supply pump, a filter, a concentration meter, osmotic membrane equipment, a four-way valve, a gas-liquid separator, a compressor, capillary tubes, a drying filter and a heat exchanger. According to the heating condition, a refrigerant is compressed into high-temperature and high-pressuresteam by the compressor and then enters the heat exchanger through the four-way valve. The steam releases heat and condenses in the heat exchanger, and then the refrigerant flows into the drying filter, the dried and filtered refrigerant flows through an auxiliary capillary tube and enters the heat exchange coil, the refrigerant flowing out of the heat exchange coil enters the four-way valve and enters the gas-liquid separator, and the refrigerant is processed by the gas-liquid separator and then enters an air inlet of the compressor from the other outlet of the gas-liquid separator to start the next cycle. Refrigeration condition cycle is opposite to heating condition. The adjoining-pipe liquid spraying defrosting heat source tower heat pump device has the advantages of simple structure,small occupied space, light weight and good defrosting effect.

The invention discloses an air-conditioning system with an auxiliary defrosting system, which comprises a compressor, a condenser, a throttle valve, an evaporator, a steam-liquid separator, a four-way reverse valve and an energy storage tank, wherein energy storage media are contained inside the energy storage tank, the energy storage tank is covered on the outer annular wall of the compressor, the back part of the evaporator is also provided with a defrosting heat radiation device, the defrosting heat radiation device is communicated with the energy storage tank through an auxiliary pipeline, an auxiliary driving pump for driving the circulation of the energy storage media inside the energy gas storage tank is arranged on the auxiliary pipeline, and is electrically connected with a control system, and the control system controls the synchronous work with a defrosting system of the air-conditioning system per se. The air-conditioning system has the advantages that the defrosting speed can be accelerated, the defrosting efficiency is improved, and the defrosting is clean.

The invention discloses a defrosting method of a multi-split air conditioning system and the multi-split air conditioning system, belongs to the field of air conditioning devices and defrosting methods thereof, and aims to solve such problems as incomplete defrosting of a traditional device. The defrosting method of the multi-split air conditioning system has the step of changing a heating mode to a refrigerating mode through reversing of a four-way valve, so that the flowing speeds of a refrigerant in an outdoor heat exchanger and at least one part of pipelines are nonuniform, and the alternation of high-speed flowing and low-speed flowing is generated. The multi-split air conditioning system is provided with a flowing speed control device on a pipeline between the outdoor heat exchanger and an indoor electronic expansion valve; and the flowing speed control device is communicated to a control device through signals. The defrosting method of the multi-split air conditioning system and the multi-split air conditioning system use alternation between high-speed flowing and low-speed flowing of the refrigerant for fully melting frost on the outdoor heat exchanger to prevent generation of heat exchange dead angles, so that the defrosting is faster and more thorough.