57results about How to "Not easy to frost" patented technology

The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.

The invention relates to a wind cold refrigerator and a method for feeding wind with top cover, wherein said method comprises: using force wind cycle refrigerating system to flow cold wind in refrigerator to cool food; the invention is characterized in that: the wind open is arranged on the top cover of refrigerator; the reflux open is on the bottom wall to feed the cold wind from down to up to the cold room. The inventive refrigerator is characterized in that: the wind open is on the top cover; the reflux open is on the bottom wall. The invention can force the air cooled by vaporized into the cold room, to be blown into cold room from up to down, to obtain high cooling speed, better cooling effect, and high efficiency.

The indoor air source heat pump water heater is a kind of hot water supplier with air as heat source. The present invention has evaporator installed in the air inlet of the air exchanging fan to exhaust air outdoor and contacting closely to the air exchanging fan; compressor, throttle unit and drying filter installed below water reservoir and connected to the lower opening of the condensator inside the water reservoir. The present invention has the advantages of stable heat pump work state, easy regulation of the throttle unit, high efficiency of the heat pump, no frosting in the evaporator, compact structure, small volume, low noise, etc.

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 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 start-stop control system for an air-conditioning compressor of an automobile. The control system comprises a controller, a temperature sensor, a humidity sensor and an air volume detection module, wherein the controller is stored with compressor start-stop temperature; the temperature sensor is arranged on the surface of an evaporator and used for detecting evaporator temperature; the controller controls the start and stop of the compressor according to the received evaporator temperature value and the set compressor start-stop temperature; the humidity sensor is used for detecting air humidity at an air-conditioning air inlet and transferring the detected humidity information to the controller; the air volume detection module is used for detecting air velocity at an air-conditioning air outlet and transferring the detected air velocity information to the controller; and the controller is stored with four groups of compressor start-stop temperatures corresponding to high and low air velocities as well as high and low humidities, and alternatively selects the compressor start-stop temperatures to control the start and stop of the compressor. The control system can control the start and stop of the compressor by selecting different temperatures according to the air humidity and the air volume, achieve accurate control of the start and stop of the compressor, and ensure smooth running of an air conditioner of the automobile under any condition, and the maximum refrigerating capacity is an air-conditioning system is improved.

The invention discloses a solar energy electric heating complementary air conditioner heat pump unit and a control method. The unit comprises a host circulation system and a solar energy auxiliary circulation system. According to the host circulation system, an auxiliary heat exchanger (5) is further arranged between a first throttle valve (3) and an outdoor heat exchanger (4). The solar energy auxiliary circulation system is constituted by a circulation pump (6), a solar energy collector (7), a three-way valve (8), an ejector (9), an intermediate heat exchanger (10), a second throttle valve (11), a first solenoid valve (12) and a second solenoid valve (13). An outlet of the solar energy collector (7) communicates with a first valve port of the three-way valve (8); a second valve port of the three-way valve (8) communicates with an inlet of the ejector (9); and an outlet of the ejector (9) communicates with an inlet of the intermediate heat exchanger (10). The key of the method is that when an outdoor environment temperature is larger than a critical value, a fan of the outdoor heat exchanger (4) operates in a low wind gear. The unit and the method can reduce energy consumption of refrigeration and heating.

The invention provides an anti-condensation coating, a radiation terminal with the anti-condensation coating on surface, a radiator or an air-conditioning system. The anti-condensation coating comprises a functional material and an organic solvent, wherein the functional material comprises the following materials by weight percent: 40-79wt% of super-hydrophobic raw material, 1-10wt% of graphene and 20-50wt% of mixture of graphene coated inorganic particle and fluorine-containing organic particle. The mixture of graphene coated inorganic particle and fluorine-containing organic particle comprises a particle mixture in the grain size of 0.2-5 mu m and the graphene coating the particle mixture. The radiation terminal with the anti-condensation coating, the radiator and/or the air-conditioning system provided by the invention can be used for solving the problem of the prior art that air conditioning and heating are not matched and used with each other, so that the indoor heating radiator and the radiation terminal are difficult to dew in summer and the outdoor heat radiator is difficult to dew.

The invention provides an air conditioner system. The air conditioner system comprises a compressor, a four-way reversing device, a throttling device, an indoor machine heat exchanger and an outdoor machine heat exchanger; the indoor machine heat exchanger is communicated with the outdoor machine heat exchanger through a refrigerant pipeline; the air conditioner system also comprises a heat exchanging device; the heat exchanging device comprises a casing and a heating portion; an accommodating groove is formed in the casing; the accommodating groove is communicated with the indoor machine heat exchanger through a pipeline; the refrigerant pipeline is at least partially arranged inside the accommodating groove; the heating portion is connected to the outer wall of the refrigerant pipeline. The air conditioner system effectively solves the problems that, in the prior art, the air conditioner system wastes energy under a refrigerating mode and the outer machine heat exchanger is easy to be frosted under a heating mode in a low temperature environment.

An evaporator of a heat pump water heater is characterized in that the evaporator (11) consists mainly of a suction fan (1) and an evaporative heat exchanger (2); the suction fan (1) comprises an outer circulating air channel (3); and the evaporative heat exchanger (2) can be fixed on the suction fan (1) and is in heat conductive combination with the outer circulating air channel (3). The heat pump water heater comprises a compressor (8), a water condenser (9), a throttle device (10) and the evaporator (11). The evaporator of the heat pump water heater provided by invention can absorb waste heat, has frosting resistance, stable performance and high comprehensive performance-price ratio, and is suitable for large-scale application.

The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner in a heating mode. By adoption of the control method of the air conditioner inthe heating mode, the problems of poor universality and poor user experience of an existing control method of an air conditioner are solved. The control method of the air conditioner in the heating mode comprises the steps that the outdoor environment temperature and the outdoor environment humidity are obtained; when the outdoor environment temperature is lower than or equal to a temperature threshold, the preheating time of an electric heater is calculated according to a first fitting formula; the closing speed of an expansion valve is calculated according to a second fitting formula; the advanced start time of an outdoor fan is calculated according to a third fitting formula; the frequency increase speed of a compressor is calculated according to a fourth fitting formula; the electricheater, the expansion valve and the outdoor fan are controlled to operate; and when the electric heater/expansion valve/outdoor fan meets set conditions, the frequency of the compressor is controlledto be increased at the frequency increase speed. By adoption of the control method of the air conditioner in the heating mode, the universality of the air conditioner can be improved, and the user experience is improved.

The invention provides a preparing method of a carbon nano tube array composite film and a heat exchanger. The method comprises the following steps that S1, an Al2O3 film and a Fe film are sequentially deposited on a substrate of monocrystalline silicon (100) to serve as catalysts; S2, vacuum chemical vapor deposition equipment is heated to 830 DEG C to 850 DEG C, ethylene gas is led in to serve as a carbon source, and a carbon nano tube array grows under assistance of water; S3, paracyclophane is deposited on the surface of the nano tube array in a vapor manner to form an even composite film; S4, the composite film is transferred to an aluminum sheet from the substrate of the monocrystalline silicon (100), paracyclophane is deposited on the surface of the composite film in a vapor manner, and a composite film is bonded on the aluminum sheet; and S5, a paracyclophane coating on the surface of the composite film is etched to form the carbon nano tube array composite film. The prepared carbon nano tube array composite film has high temperature and low temperature resistance, corrosion resistance, heat conduction and super hydrophobicity, and therefore when a unit carries out refrigeration, heat exchanger fins are not prone to condensation; and during heating, frosting is not prone to happening, the heat exchange performance of the heat exchanger is improved, and therefore the running performance of the unit is improved.

The invention discloses an air conditioner control method and an air conditioner. The air conditioner comprises a compressor, a liquid storage device and a heat preservation pipe; an outlet of the liquid storage device is connected with an air suction opening of the compressor, one end of the heat preservation pipe covers the periphery of the compressor, and the other end of the heat preservation pipe faces the liquid storage device; a fan is installed on the heat preservation pipe; and the control method includes the steps that in the heating running process, the indoor environment temperature T0 and the liquid storage device temperature T1 are collected; and the fan is controlled to run according to the indoor environment temperature T0 and the liquid storage device temperature T1 to drive air in the heat preservation pipe to blow to the liquid storage device, air flow blowing from the compressor to the liquid storage device is formed in the heat preservation pipe, heat generated in the compressor running process is conveyed to the liquid storage device, the liquid storage device is heated and is not prone to frosting in the thing process, and the heating effect is improved.

The invention discloses a full-indoor air conditioner for introducing fresh air in a cold region. The full-indoor air conditioner comprises a fresh air opening, an air inlet, an air supply fan, a first exhaust opening, a first exhaust fan, a ceiling air pipe, an indoor heat exchanger, a compressor, a four-way reversing valve, a throttling device, an in-pipe heat exchanger and a second exhaust opening. The in-pipe heat exchanger, the throttling device, the indoor heat exchanger and the four-way reversing valve are sequentially connected to constitute a heat pump circulating system. The compressor is further connected with the four-way reversing valve. The ceiling air pipe is arranged in an air conditioner room, and the two ends of the ceiling air pipe are correspondingly connected with theair inlet and the second exhaust opening which are formed outside the air conditioner room. The air inlet is internally provided with the air supply fan. The compressor, the four-way reversing valve and the in-pipe heat exchanger are arranged in a heat exchange pipe section of the ceiling air pipe. Compared with the prior art, the full-indoor air conditioner can be simple in structure, still operates efficiently in the cold region at the temperature of minus 15 DEG C, and is not liable to frost and low in cost.

The invention discloses a five-door air-cooled refrigerator and relates to the technical field of refrigerators. The defect that freezing chambers of refrigerators are small in capacity and cannot store large food is overcome through the five-door air-cooled refrigerator. The five-door air-cooled refrigerator comprises a refrigerator body. A cold storage area, a temperature varying area and a freezing area are sequentially arranged in the refrigerator body from top to bottom. The temperature adjusting range of the temperature varying area is from minus 18 DEG C to 5 DEG C. A through air duct is arranged in the cold storage area, the temperature varying area and the freezing area. An electric appliance box is arranged on the top of the outer side of the refrigerator body. A French door type structure is adopted by the cold storage area, and an auxiliary evaporator is arranged in the cold storage area. A drawer type structure is adopted by the temperature varying area. A French door type structure is adopted by the freezing area, and an evaporator and a rotating fan are arranged in the freezing area. The freezing area comprises a left freezing region and a right freezing region, and the left freezing region and the right freezing region are mutually independent and are both of a drawer type structure. The temperature varying area and the freezing area are each internally provided with an adsorption liner or an injection molding liner. A middle barrier layer is arranged between the temperature varying area and the freezing area, and the temperature varying area, the freezing area and the middle barrier layer are foamed overall.

The invention discloses a refrigeration control method and device and refrigeration equipment. The method comprises the steps that the actual temperature of target space is monitored; when the actualtemperature is larger than the first preset temperature, the refrigeration equipment is controlled to enter a rapid cooling mode, and the opening degree of an electronic expansion valve is controlledin the rapid cooling process so that the evaporation temperature can be maintained at the second preset temperature; and when the actual temperature is smaller than or equal to the first preset temperature, the opening degree of the electronic expansion valve is controlled so that the evaporation temperature can be larger than the return air dew point temperature. Rapid cooling refrigeration is carried out under the high-temperature working condition, it is guaranteed that the evaporation temperature is kept at the second preset temperature without frosting, the evaporation temperature is controlled to be larger than the return air dew point temperature under the low-temperature working condition, frosting is not likely to happen, meanwhile, the dew point temperature can be reduced throughrapid cooling refrigeration, so that the condition that the evaporation temperature is larger than the return air dew point temperature can be met more easily under the low-temperature working condition, frosting of the evaporator in the refrigerating process is effectively reduced, the efficient refrigerating time is prolonged, frequent defrosting is avoided, and the energy efficiency and reliability are improved.

The invention relates to the technical field of heat pump equipment, and discloses a defrosting method for the heat pump equipment. The defrosting method for the heat pump equipment comprises the steps that under the condition that an outdoor unit heat exchanger of the heat pump equipment is in a refrigeration mode, the temperature of the outdoor unit heat exchanger is obtained; under the condition that the temperature of the outdoor unit heat exchanger is smaller than or equal to a set frosting temperature threshold value, an air supply valve is opened; and under the condition that the temperature of the outdoor unit heat exchanger is larger than or equal to a set defrosting temperature threshold value, the air supply valve is closed. By the adoption of the defrosting method for the heat pump equipment, the defrosting effect can be achieved without switching a four-way valve, and the service life of the four-way valve is prolonged. The invention further discloses a defrosting device for the heat pump equipment and a hot water unit.

The invention discloses fruit-flavored dried sweet potatoes. The fruit-flavored dried sweet potatoes are made from the following raw materials in parts by weight: 80-90 parts of sweet potatoes, 10-15parts of melon seed kernels, 6-12 parts of sesame seeds, 15-20 parts of corn flour, 5-10 parts of apples, 2-5 parts of strawberries, 3-6 parts of oranges, 1-3 parts of carrots, 2-5 parts of semen cassiae, 3-6 parts of licorice roots, 1-4 parts of malt, 1-3 parts of Chinese wolfberry fruits, 1-3 parts of herba rhodiolae, 2-5 parts of lily bulbs, 8-12 parts of maltose, 5-10 parts of fresh milk and 4-6 parts of yeast. According to the fruit-flavored dried sweet potatoes provided by the invention, the sweet potatoes are used as main raw materials, the melon seeds, the sesame seeds, the corn flour,the apples, the strawberries, the oranges, the carrots and various traditional Chinese medicines are also added, so that the fruit-flavored dried sweet potatoes are rich in nutrition, rich in fragrance, fragrant, crispy and tasteful, and bright in color. A deep processing way of the sweet potatoes is increased, and the economic returns are increased. The sweet potatoes are sterilized and cooked,then the cooked sweet potatoes and traditional Chinese medicines are mixed and mashed, through fermentation with the yeast, the nutrients and the aromatic taste are added, the function of the stomachand the intestine is coordinated, the uptake and the utilization are promoted, and the health care function is strengthened.

The invention provides a door body assembly and a refrigeration device. The door body assembly comprises a body, an evaporator and a draught fan, wherein the body is provided with a containing cavityinternally provided with an air flue; the evaporator is arranged in the containing cavity; and the draught fan is arranged in the containing cavity and is opposite to the evaporator. Air blown out through the draught fan is discharged into a box of the refrigeration device through the evaporator and the air flue. According to the provided door body assembly, the body is provided with the containing cavity, the draught fan, the evaporator and the air flue are all arranged in the containing cavity, and the evaporator absorbs heat during work, so that the temperature of air around the evaporatoris reduced. When air blown out through the draught fan passes through the evaporator, cool air is formed, and the effect of refrigerating objects in the refrigeration device is achieved. Meanwhile, the air blown out through the draught fan is discharged into the box of the refrigeration device through the evaporator and the air flue, the air flue is prevented from being stopped by the objects in the box, accordingly, effective circulation of cool air in the box is guaranteed, the cooling capacity at various positions in the box is more uniform, and the refrigeration effect of the refrigerationdevice is improved.

The invention provides a total heat source heat pump system, and relates to the field of heat pumps. The total heat source heat pump system comprises a compressor, a four-way valve, a condenser, a liquid storage device, an economizer, a throttling valve, an evaporator, a gas-liquid separator, an economizer throttling valve, an energy module, a one-way valve and a solution pump. The energy module of the total heat source heat pump system adopts a large-flow small-temperature-difference design, the temperature difference between a solution and air is small, frosting is not prone to occurring, frequent defrosting is not needed, the energy consumption is small, the efficiency is high, the surface of a heat exchanger is made of graphene coating, and the heat exchange efficiency is high; and the surface density is high, water is not easy to stick, and frosting is not easy, the evaporator adopts an overflow type design, a refrigerant and the solution are subjected to sufficient heat exchange, the heat exchanger is fully utilized, the evaporation is uniform, and the efficiency is high.

The invention relates to an air guide device capable of dissipating heat of the storage battery during running of the storage battery car. The device comprises a first supporting leg, a second supporting leg, a third supporting leg and a fourth supporting leg, the first supporting leg and the second supporting leg are connected through a first connecting plate and a second connecting plate, and the second supporting leg and the third supporting leg are connected through a third connecting plate and a fourth connecting plate. The third supporting leg and the fourth supporting leg are connectedthrough a fifth connecting plate and a sixth connecting plate, a first reinforcing rib is arranged between the first connecting plate and the second connecting plate, and a first air guide plate is arranged between the first connecting plate and the second connecting plate; a second reinforcing rib, a first wind deflector and a second wind deflector are arranged between the third connecting plateand the fourth connecting plate; a third reinforcing rib is arranged on the first wind shield; a fourth reinforcing rib is arranged on the second wind shield; a fifth reinforcing rib is arranged between the fifth connecting plate and the sixth connecting plate, and a second air guide plate is arranged between the fifth connecting plate and the sixth connecting plate. The air guide device for heatdissipation of the storage battery accelerates heat dissipation of the storage battery.

The invention discloses an outdoor parallel flow heat exchanger for a heat pump air conditioner. The outdoor parallel flow heat exchanger comprises a blocking piece (6), a first flow guide separationpiece (8) and a second flow guide separation piece (9), a hole penetrating separation piece (10) is inserted into an upper flow collecting pipe (7), and the first flow guide separation piece (8), thesecond flow guide separation piece (9) and the blocking piece (6) are sequentially inserted into a lower flow collecting pipe (1); the upper flow collecting pipe (7) and the lower flow collecting pipe(1) which are assembled are placed on the left side and the right side of a core assembling machine correspondingly, then a protecting plate (5), a fin (3) and a multi-channel flat pipe (2) are arranged on the core assembling machine in sequence, the multi-channel flat pipe (2) is inserted into the upper flow collecting pipe (7) and the lower flow collecting pipe (1) through the core assembling machine, and moreover, an inlet pipe (11) and an outlet pipe (4) are fixed on a core body through spot welding. According to the outdoor parallel flow heat exchanger, the flow guide separation pieces are adopted, so that flowing of a refrigerant is uniform, and then the heat exchange efficiency is improved; due to the adoption of the non-open-window fin, when the parallel flow heat exchanger reflects the function of an evaporator, frosting is not prone to occurrence, and then the heat exchange efficiency is improved.