42results about How to "To achieve the purpose of defrosting" patented technology

The invention discloses an air-water dual heat source heat pump water heater, which comprises a main machine, a heat-storage and preservation water tank, a controller, an environment temperature controller, a coil temperature sensor, a water tank temperature sensor, a high-water-level switch, a low-water-level switch, a target-flow switch, a water inflow electromagnetic valve, a circulating water pump, a compressor, a motor, an electronic expansion valve, a double-pipe evaporator circuit electromagnetic valve, a fin tube evaporator circuit electromagnetic valve, a circulating hot water pipe, a tube-in-tube condenser and a four-way valve, wherein the D port of the four-way valve is connected with the exhaust pipe of the compressor through a high-pressure switch, the C port of the four-way valve is connected with the upper part of a tube-in-tube condenser, the S port of the four-way valve is connected with the air intake of the compressor through a vapor liquid separator and a low-pressure switch, the E port of the four-way valve is connected with the upper part of a double-pipe evaporator and the upper part of a fin tube evaporator, and the tube-in-tube condenser forms a water cooled heat exchanger through a liquid container, a filter, the electronic expansion valve, an axial flow fan blade, a motor and the double-tube evaporator and forms a wind cooled heat exchanger through a fin tube evaporator. The water heater can be used for 24 hours each day all the year around in the north of China.

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.

The invention discloses a heat pump dryer system. A heating system comprises an air injection enthalpy increasing compressor, a four-way reversing valve, a heating coiler, a thermostatic expansion valve, a refrigerating coiler and a gas-liquid separating device; an economizer system comprises a flash evaporator and a jetting electromagnetic valve; the dehumidification system comprises an electronic expansion valve, a dehumidification electromagnetic valve and a dehumidification coiler; a defrosting system is a singly-arranged defrosting electromagnetic valve; the flash evaporator and the electronic expansion valve are connected between the thermostatic expansion valve and the refrigerating coiler in series, the flash evaporator is arranged on the side close to the thermostatic expansion valve, and the flash evaporator is further connected to the input end of the enthalpy increasing compressor through the jetting electromagnetic valve; the dehumidification electromagnetic valve and the dehumidification coiler are connected to the two ends of the refrigerating coiler in parallel, and the dehumidification electromagnetic valve is arranged on one side close to the electronic expansion valve; and the dehumidification electromagnetic valve is connected to the two ends of the flash evaporator and the electronic expansion valve in parallel. By means of the heat pump dryer system, the compressor efficiency and the internal dehumidification and defrosting effects can be improved, the structure is simple and effective, and the heat pump dryer system is worthy of popularization.

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.

A defrosting heater for electric refrigerator consists of electric heating-wires, insulating casings with outer casings and ceramic coatings. The outer casings are made of high strength thermal conductive metals. The ceramic coatings are of far-infrared materials, so that they work in high efficiency, when the heater works, with simple structure, low cost and good corrosion-proof performance.

The invention relates to a rotary electromagnetic heat pump system which belongs to the electromechanical field and aims to solve the problem that a heat pump system in prior art has low heating efficiency in a low-temperature condition or a condition lacking of a low-temperature thermal source. The rotary electromagnetic heat pump system comprises a rotary electromagnetic generator, a solution heat exchanger, two throttling valves, a solution pump, an absorber, a four-way valve and two heat exchangers, wherein an outside gas inlet, an outside gas outlet, an outside medium inlet, an outside medium outlet, two working medium inlets and one working medium outlet are formed in the rotary electromagnetic generator; the rotary electromagnetic generator generates heat through rotation, so as to heat a working medium; the working medium enters the heat exchanger for heat exchange with an outside medium after being gasified and separated out, and enters the other heat exchanger for heat absorption from the outside medium after heat transmission to the outside medium; after the outside medium is cooled, a refrigerant is heated and enters the rotary electromagnetic generator after passing through the absorber and the solution heat exchanger, so as to be heated again. Moreover, the rotary electromagnetic generator also can be used for directly heating the outside medium. The rotary electromagnetic heat pump system provided by the invention is applicable to fields in need of heating and cooling of the outside medium.

Disclosed is an electro thermal evaporator for realizing cold composition defrosting, which comprises an aluminum alloy flap tube, electric heating wires and a water collection disc, each of the flap tube is provided with a groove for mounting the electric heating wires and the water collection disc.

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 provides an air-conditioner defrosting control method and device, an air conditioner and a computer readable storage medium, and relates to the technical field of air conditioners. The method comprises the steps that operation is sequentially executed N times, wherein the i-time operation comprises the substeps that the operating capability attenuation speed of the air conditioner ina heating mode is obtained; the air conditioner is controlled to switch from the heating mode to an i-time first defrosting mode if the operating capability attenuation speed is less than a preset speed; and after the i-time first defrosting mode is finished, the air conditioner is controlled to switch back to the heating mode from the i-time first defrosting mode, and N is an integer greater than or equal to 2, and 1<=i<=n.

The invention provides an air conditioner control system and a control method, the air conditioner control system comprises a compressor (1), an indoor heat exchanger (2) and an outdoor heat exchanger(3), wherein a branch (4) is further formed on a pipeline between a high pressure exhaust end (11) of the compressor (1) and the indoor heat exchanger (2), a base plate heating module (5) is arrangedon the branch (4) and can heat an air conditioner base plate, and the other end of the branch (4) is connected back to a low pressure suction end (12) of the compressor. According to the air conditioner control system and the control method, a refrigerant can be used for deicing, the energy can be fully used, the energy efficiency is improved, power dissipation is reduced, energy conservation andemission reduction are realized, and the reliability problem is solved; the problem that ice is difficult to melt on the base plate under the extreme cold condition so that the fan blade and the iceblock are in friction can be solved, and the problems that the operation noise of the outer machine is larger and mechanical faults are easy to occur in the severe cold area are solved from the source.

The invention discloses an air-conditioning system of a new energy automobile and belongs to the technical field of automotive air-conditioning systems. The air-conditioning system of the new energy automobile includes a refrigerating fluid circulation loop and a bypass; the refrigerating fluid circulation loop includes a compressor, a four-way reversing valve, an inner automotive heat exchanger and an outer automotive heat exchanger, a vent port of the compressor is connected with an inlet end of the four-way reversing valve, and the inner automotive heat exchanger and the outer automotive heat exchanger are successively connected between a first port and a second port of the four-way reversing valve through a pipeline and connected with an air suction port of the compressor through a third port of the four-way reversing valve; the bypass is in parallel connection with the compressor and is provided with a first solenoid valve and a bypass valve in sequence. On the premise of not changing a circulation pattern of the air-conditioning system, by arranging the bypass at the vent port of the compressor, a high-temperature high-pressure refrigerating fluid drained out from the vent port of the compressor is conveyed into the air suction port of the compressor through the bypass valve, and therefore the air suction pressure of the air suction port of the compressor is enhanced, sothat a purpose of defrosting is achieved.

A defrosting control method of an air source heat pump unit comprises the steps that when the air source heat pump unit conducts heating, the environment temperature T2 and the evaporation pressure P1 of the heat pump unit under the heating cycle are collected, the evaporation temperature T1 is obtained by calculating the collected evaporation pressure P1 through a programming formula, and a curvilinear equation f (delta T) with the difference value T = T2-T1 changing along with time is generated, and calculating the derivative of the curvilinear equation f (delta T), obtaining the variation trend of the difference value delta T between the evaporation temperature T1 and the environment temperature T2 according to the derivative calculation result, comparing according to the derivative calculation result, judging whether the air source heat pump needs to be defrosted or not, and defrosting by automatically adjusting the frequency of the variable-frequency compressor and the frequency of the variable-frequency fan. According to the defrosting control method provided by the invention, defrosting is carried out by adjusting the frequencies of the compressor and the fan in real time under the condition that the heating circulation direction is not changed, and the problems that energy is wasted, defrosting water is difficult to treat and comfort is affected are solved. The invention further provides an air source heat pump for realizing the method.

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, a pipeline arranged between an air outlet of the compressor and the four-way reversing valve passes through the energy storage media arranged inside the energy storage tank, a defrosting heat radiation device is also arranged at the back part of the evaporator and 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, the control system controls the synchronous work with a defrosting system of the air-conditioning system per se, and the energy storage tank is in a telescopic structure. 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 relates to a heat exchange device, an air conditioner and a control method of the heat exchange device, and relates to the technical field of air conditioners. The heat exchange device comprises a heat transfer assembly and a control assembly, the heat transfer assembly comprises a first heat transfer part and a second heat transfer part, the first heat transfer part is connected with a compressor to absorb heat of the compressor, and the second heat transfer part is connected with a heat exchanger to transfer heat to the heat exchanger; and the control assembly comprises a control switch and a control circuit, and the control switch controls the control circuit to form an access so as to generate magnetic force, so that the first heat transfer part is in contact with the second heat transfer part. Through the method, waste heat of the compressor is used for defrosting, so that energy conservation and environment protection are achieved.

The invention discloses a mobile refrigeration house refrigerating unit which comprises an evaporation cavity, a condensation cavity, a compressor, an electrical part, a connecting pipeline and a three-way valve, an exhaust pipeline of the compressor is connected with the three-way valve, the evaporation cavity is located on the upper side of the unit, and the condensation cavity is located on the lower side of the unit. The all-external integrated design is adopted, the evaporator is directly installed outside the refrigeration house, only the air supply outlet and the air return inlet of the evaporation cavity are formed in the refrigeration house, the maximum distance between the air supply outlet and the refrigeration house is 19.5 cm, the refrigeration house space occupied by a refrigeration house unit is greatly reduced, and therefore the use capacity of the refrigeration house is increased; rapid and accurate positioning can be carried out by arranging a Beidou + GPS positioning system, remote monitoring operation can be carried out through a mobile phone terminal and a computer terminal, and a temperature controller and an Internet of Things module are used for controlling an air conditioning system, so that the functions of fresh-keeping/freezing dual-mode automatic control, refrigeration/heating automatic control and full-state digital display can be achieved.

The invention provides an air-conditioner outdoor unit and an air-conditioner. The air-conditioner outdoor unit comprises a heat exchanger (1), an infrared heater (2) and an infrared reflection substance, wherein the infrared heater (2) can radiate infrared waves to heat the heat exchanger (1) so as to heat and defrost the heat exchanger (1) when the heat exchanger (1) frosts, and the infrared reflection substance is arranged in the air-conditioner outdoor unit, and can carry out the reflection effect on the infrared rays. By means of the air-conditioner outdoor unit, the heat source utilization rate is high, the influence of air heat resistance is avoided, the infrared rays can be reflected to the surface of the heat exchanger again, the area, radiated by the infrared rays, of the heat exchanger is increased, the utilization rate of the infrared rays is increased, the heat exchanger heating effect is improved, and the problem of defrosting existing in the low-temperature heating process of an existing outdoor unit heat exchanger is effectively solved.

The invention provides a defrosting assembly, an air conditioning system and a control method of the air conditioning system. The defrosting assembly comprises a bypass pipe and a throttling device, wherein one end of the bypass pipe communicates with a refrigerant pipeline, and the other end of the bypass pipe communicates with a gas-liquid separator; and the throttling device is arranged on thebypass pipe. The bypass pipe is additionally arranged on an outdoor unit assembly, and the throttling device is arranged on the bypass pipe, so that the outdoor unit assembly can complete refrigeration circulation, evaporation related heat absorption is formed, and the purpose of defrosting is achieved.