38results about How to "Avoid cooling loss" patented technology

The invention relates to an energy-saving differential pressure type fruit and vegetable precooling warehouse, comprising a warehouse body, a refrigeration system, a humidifier, a blower, a return fan and fruit and vegetable boxes; the warehouse body is formed by an air treatment chamber, an air return static pressure box, an air supply static pressure box and a precooling room; the precooling room is divided into multiple precooling room compartments by flexible roller shutters; an air return hole of a return air top plate and an air supply hole of an air supply floor are staggered left and right; an evaporator and the humidifier are arranged in the air treatment chamber, the blower is embedded in the inlet position of the air supply static pressure box, and the return fan is embedded in the outlet position of the air return static pressure box, and air holes are formed in side walls of the fruit and vegetable boxes. The energy-saving differential pressure type fruit and vegetable precooling warehouse has the beneficial effects that an operation mode of separating hot and cold air ducts before and after precooling and combining air supply and air return is adopted, and the humidifier for precooling is provided, so the characteristics that loss of refrigeration capacity for precooling is less, the precooling is uniform, the precooling speed is fast, water loss of fruits and vegetables is less, the precooling capacity is adjustable, energy is saved, the efficiency is high, and the like are achieved.

The invention provides a defrosting control method and device of an air-cooled refrigerator. The defrosting control method of the air-cooled refrigerator comprises the following steps: detecting an air pressure difference of air supply flow of the air-cooled refrigerator before and after the air supply flow passes through an evaporator of the air-cooled refrigerator; judging whether the air pressure difference of the air supply flow is greater than a preset first air pressure difference threshold value; if the air pressure difference of the air supply flow is greater than the preset first air pressure difference threshold value, triggering the air-cooled refrigerator to start a defrosting procedure; and if the air pressure difference of the air supply flow is not greater than the preset first air pressure difference threshold value, judging whether the operation rate of a compressor of the air-cooled refrigerator is greater than a preset operation rate threshold value, and if the operation rate of the compressor is greater than the preset operation rate threshold value, judging whether the frosting thickness of the evaporator reaches a level where defrosting is needed. Therefore, defrosting can be carried out according to the actual frosting condition of the evaporator, and the refrigerator cold loss caused by frequent defrosting and the reduction of the heat exchange efficiency due to untimely defrosting are avoided.

The invention discloses a refrigerating system. The refrigerating system comprises a compressor, a condenser, a gas-liquid separator, a first throttling device, an evaporator and a supercooling heat exchanger, wherein the compressor, the condenser, the first throttling device, the gas-liquid separator and the evaporator are sequentially connected together through connecting pipes; the supercooling heat exchanger is also arranged on the outer pipe wall of the connecting pipe connected to an outlet of the condenser; an inlet of the supercooling heat exchanger is communicated with a gas outlet of the gas-liquid separator; and an outlet of the supercooling heat exchanger is communicated with an air inlet of the compressor. The supercooling heat exchanger is arranged on the connecting pipe of the outlet of the condenser and is used for further exchanging heat of a cold medium flowing from the condenser by using a gas cold medium separated by the gas-liquid separator. The two cold media are relatively high in temperature difference, and the cold medium flowing from the condenser can be further supercooled and can achieve higher supercooled degree, so that the ability and the energy efficiency of the cold media are improved. Therefore, a copper pipe and a fin of the heat exchanger can be correspondingly shrunk in volume, energy is saved, and the cost can also be reduced.

The invention relates to an energy-saving refrigerator, which arranges the icing area on the inner wall of refrigeration room gate, therefore, without opening the refrigeration room drawer, the icing and ice extraction can be realized. And it arranges a drink area; a independent space sensor on the side wall of soft refrigeration room to deeply refrigerate the new food to quickly generate a lot of ice band to avoid hurting the food. The invention sets independent circuits for each functional area, and directly displays the temperature of each area and the environment temperature on the operation panel to apply the adjustment of user.

The invention provides a humidity adjusting device for a semiconductor refrigeration box. The humidity adjusting device comprises a TEC (Thermoelectric Cooler) mounted on the semiconductor refrigeration box. One side of the TEC is connected with a cool-end heat exchanger arranged in a box body of the semiconductor refrigeration box, and the other side of the TEC is connected with a hot-end heat exchanger arranged outside the box body. An inner circulation fan is arranged on the cool-end heat exchanger; an in-box temperature sensor, an in-box humidity sensor, and a controller capable of conditioning working voltages of the TEC and the inner circulation fan are further arranged in the box body; and the in-box temperature sensor and the in-box humidity sensor are connected with the controller. The humidity adjusting device can realize a constant-temperature dehumidifying function by using former refrigeration equipment of the refrigeration box, and additionally arranging the controller for setting the working voltage of the inner circulation fan. The invention further provides a humidity adjusting method for the semiconductor refrigeration box, which stores cooling capacity in the cool-end heat exchanger by rapidly refrigerating and turning off the inner circulation fan at a cool end simultaneously, and realizes the temperature-constant dehumidifying function by rapidly increasing the working voltage of the inner circulation fan and carrying out rapid humidity adjustment. The control method has no cooling capacity loss, can individually adjust the humidity, and can monitor a relative humidity value in the refrigeration box in real time, and has no cooling capacity loss. The device has the advantages of simple structure and low manufacturing cost.

The invention discloses an automatic stereoscopic refrigeration house based on an internet of things. The refrigeration house comprises a refrigeration house storage area, a closed transition area anda center control system, a plurality of loading openings are formed in the wall close to the outer side of the transition area, refrigerated trucks to be loaded are parked on the outer side of the loading opening of the refrigeration house, rear doors of the refrigerated trucks align to the corresponding loading openings, the center control system comprises a server, the server is connected withan internet, vehicular processors, wireless transmission modules and positioning modules are mounted on the refrigerated trucks, a lifting table device is arranged in the transition area, and a purchasing platform comprises a plurality of feeding platforms and feeding belts. According to the refrigeration house, cargo loading can be accelerated, labor cost is reduced, and pollution and damage of cargoes are reduced in the loading process.

The invention provides a solution dehumidifying unit and an air conditioner with the same. The solution dehumidifying unit comprises a multiple stages of heat pump systems, wherein each stage of heat pump systems comprises a regeneration unit; liquid storage tanks of the regeneration units of two adjacent stages of heat pump systems are communicated with each other; the multiple stages of heat pump systems comprise a first heat pump system; the first heat pump system comprises a first regeneration unit and a surface air cooler; a liquid storage tank of the surface air cooler is communicated with the liquid storage tank of the first regeneration unit, so as to ensure that condensate water in the surface air cooler flows into the liquid storage tank of the first regeneration unit; the first heat pump system further comprises a first heat exchange pipeline; the first generation unit comprises a first spray pipeline; the first heat exchange pipeline is communicated with the surface air cooler and performs heat exchange with the first spray pipeline through a first condenser. The solution dehumidifying unit solves the problem of high loss of refrigeration capacity of a solution dehumidifying unit in the prior art.

The invention relates to a supercooled water type dynamic ice slurry making system. The supercooled water type dynamic ice slurry making system is a technologic system for making a clear water ice slurry by adopting a supercooled water technology. The system is characterized in that one or more separator plates is / are arranged in an ice storage tank, a water level balancing hole is arranged in every separator plate, and the separator plates are equidistantly arranged, and divide the ice storage tank into two or more separate tanks; and an upper water extracting tube and an ice slurry tube are arranged above every separate tank, a lower water extracting tube is arranged below every separate tank, the upper water extracting tubes and the lower water extracting tubes are provided with regulating valves, and every ice slurry tube is provided with a switch valve. In the ice slurry making process, water in one of the separate tank is extracted from the lower portion, high temperature water is extracted from the upper portion of another separate tank, the extracted water and the extracted high temperature water are mixed, the obtained water mixture is sent to a supercooled water heat exchanger through a water pump and forms the ice slurry in a crystallization promoting device, the ice slurry is sent to the upper portion of the one separate tank for making, and above cycle is repeated. The system has the advantages of great reduction of cold heat loss generated by cooling water preheating, great reduction of the preheating loss, and substantial energy saving benefit.

The invention relates to a cryoablation needle with an adjustable targeting area. The cryoablation needle comprises an adjusting part and a fixing part, the adjusting part can axially move relative tothe fixing part to adjust a length of a target area, the fixing part comprises a needle rod, a rear-section heat insulation pipe, an air inlet pipe fitting and an air return pipe, the rear end of theneedle rod is fixedly connected with the front end of the rear-section heat insulation pipe, and the needle rod and the rear-section heat insulation pipe are communicated to form an accommodating cavity; the air inlet pipe fitting and the air return pipe are inserted into the accommodating cavity from the rear end of the rear-section heat insulation pipe; the adjusting part comprises a front-section heat insulation pipe and a core shaft, and the front-section heat insulation pipe is axially arranged in the accommodating cavity in a sliding mode so as to adjust the length of the target area; the air inlet pipe fitting penetrates through the front-section heat insulation pipe and extends into the needle rod; the core shaft is inserted from the rear end of the rear-section heat insulation pipe and is linked with the front-section heat insulation pipe. By means of the cryoablation needle, the technical problems that due to the fact that the target area of the existing cryoablation needleis fixed, treatment operation is complex, and surrounding healthy tissue is prone to being injured are solved.

The invention discloses a refrigerator and a door seal strip thereof. The gate seal strip is provided with a box body used for contacting with a door body of the refrigerator and sealing the refrigerator and a body part of a gap between the box body and the door body, an installation part which is connected with the body part and is used for installing on the door body as well as an extending part connected with the body part, wherein the body part is internally provided with a gasbag, and the extending part is extended inwards from the body part in a wriggled manner. According to the door seal strip of the refrigerator of the embodiment of the invention, gas in a door cannot generate gas exchange in a seal gas chamber, the spillage of cold capacity is avoided, the energy consumption is reduced, the heat-insulating property of the refrigerator is improved, and the door seal strip is simple in structure and convenience in installation.

The present invention discloses an efficient temperature control device for solar telescope primary lens surface seeing effect control. The device comprises a primary lens, a lens surface sensor, a refrigeration set, a refrigeration machine external circulation cooling system, a surface cooler, a pumping pump, a fan, an electric heater, a sealed box, a controller and an environment temperature measurement device. The goal of the temperature control device is to carry out temperature control of the primary lens, thus the measurement value of the lens surface sensor is consistent with the measurement value of the environment temperature measurement device, and thus the purpose of controlling a lens surface seeing effect is achieved. Specifically the temperature control of the primary lens surface is realized by controlling the power of the electric heater and the cooling medium refrigeration temperature of the refrigeration set by the controller. Through the surface cooler, the contact area of a cooling medium is increased, the heat exchange efficiency is raised through blowing of the fan, the cold and heat loss is reduced through the sealed box, and the control response efficiency of the primary lens surface temperature is greatly improved.

An MRI system is provided with a refrigeration system that includes dual compressors that are coupled to a single coldhead that cools the liquid helium in the MRI system. Because the single coldhead receives the compressed refrigerant regardless of the compressor that is being used, the unacceptable cooling loss that would have occurred with redundant coldheads is avoided. By coupling two compressors to a single coldhead, continuous operation can be provided despite a failure of either compressor. The dual refrigeration system may comprise a water-cooled compressor and an air-cooled compressorto enhance MRI system reliability in the event of a failure of the primary compressor or the cooling water circulation system. Alternatively, two water-cooled compressors may be provided, each with its own independent water system. Check valves may be used to enable passive control of the refrigerant gas flow from either compressor to the coldhead, thereby further improving the reliability.

The invention relates to a recycling device for condensate water of an air conditioner and a control method for the recycling device. The recycling device comprises a heat preservation water tank, a heat exchanger, a water storage tank and a control device; a condensate water temperature detection device and an environment temperature detection device are arranged inside and outside the heat preservation water tank respectively; the heat exchanger selectively communicates with the heat preservation water tank, and the surface of the heat exchanger is provided with a refrigerant temperature detection device; the water storage tank selectively communicates with the heat exchanger; and the control device is configured to enable at least part of the condensate water in the heat preservation water tank to flow into the heat exchanger and control the refrigerant temperature detection device and the environment temperature detection device to regularly detect the condensate water temperature in the heat exchanger and the environment temperature when the difference value between the environment temperature and the condensate water temperature in the heat preservation water tank is greater than a first preset temperature threshold value so that the condensate water in the heat exchanger can be discharged to the water storage tank when the difference value between the environment temperature and the condensate water temperature in the heat exchanger is less than or equal to a second preset temperature threshold value. The control method comprises the steps of temperature primary detection, cold quantity recovery, temperature timing detection and condensate water discharge.

The invention relates to a condenser for acid steam. The condenser comprises a casing, heat exchange tubes, a baffle plate, an acid steam inlet and an acid steam outlet. The heat exchange tubes and the baffle plate are arranged in the casing. The acid steam inlet is formed in the top of the casing, and the acid steam outlet is formed in the bottom of the casing. A liquid discharging port is formed in the bottom of the baffle plate to be used for discharging condensates. The acid steam outlet is of a pulling bushing structure. The condenser has the advantages that moisture included in condensate acid steam is discharged efficiently, and the condensates produced during condensing can be discharged through the liquid discharging port and a condensate outlet, so that losses of refrigeration capacity due to the fact that the condensates enter a subsequent acid steam cooler are prevented, and meanwhile, increasing of system loads due to the fact that the condensates absorb the acid steam again is prevented.

The invention discloses an energy-saving air conditioner, and relates to the technical field of air conditioner refrigeration. The energy-saving air conditioner comprises a refrigeration system, a ventilation system and a control system, wherein the refrigeration system comprises an air cooling circulation system and a water cooling circulation system; the air cooling circulation system comprisesa variable frequency compressor, a condenser and a first cold water plate heat exchanger; the water cooling circulation system comprises a cooling tower; a wet bulb thermometer and a cooling pipe arearranged on the side wall of the cooling tower; a circulation water tank is arranged at the bottom of the cooling tower; a spraying head is arranged in the cooling tower and communicates with the circulation water tank through a pipeline; a water pumping device is further arranged on one side of the cooling tower; and the ventilation system comprises an air conditioner indoor unit and a second cold water plate heat exchanger. The energy-saving air conditioner is diversified in refrigeration mode, low in refrigeration energy consumption, small in compressor usage frequency and long in service life.

The invention provides an ultralow-temperature condensation enrichment system. The ultralow-temperature condensation enrichment system comprises a water removal pipeline system, an enrichment and analysis pipeline system, a cooling system, a cold source distribution system, a thermal insulation system and a control system. The control system controls the water removal pipeline system, the enrichment and analysis pipeline system, the cooling system and the cold source distribution system to work so as to achieve a sampled gas water removal mode, a mode of condensation enrichment of target matter in sampled gas, a mode of heating analysis of the target matter in the sampled gas and a water removal pipe heating drying mode. The ultralow-temperature condensation enrichment system integrates functions of water removal, enrichment and analysis in a high performance mode, and is small in size and low in power consumption.

The present invention discloses an efficient temperature control device for solar telescope primary lens surface seeing effect control. The device comprises a primary lens, a lens surface sensor, a refrigeration set, a refrigeration machine external circulation cooling system, a surface cooler, a pumping pump, a fan, an electric heater, a sealed box, a controller and an environment temperature measurement device. The goal of the temperature control device is to carry out temperature control of the primary lens, thus the measurement value of the lens surface sensor is consistent with the measurement value of the environment temperature measurement device, and thus the purpose of controlling a lens surface seeing effect is achieved. Specifically the temperature control of the primary lens surface is realized by controlling the power of the electric heater and the cooling medium refrigeration temperature of the refrigeration set by the controller. Through the surface cooler, the contact area of a cooling medium is increased, the heat exchange efficiency is raised through blowing of the fan, the cold and heat loss is reduced through the sealed box, and the control response efficiency of the primary lens surface temperature is greatly improved.

The invention relates to an evaporator system (10) having at least two evaporators actuated by means of a condenser with coolant which is delivered via an injection position (32). Said evaporators have differing refrigerating capacities and are arranged one behind the other such that they are connected in series. The evaporator having a lower refrigerating capacity (19) is constructed in a plate-like manner, whereas the evaporator having a higher refrigerating capacity (11) is provided with a conduit (14) for guiding the coolant and is connected in series before the evaporator having a lower refrigerating capacity (19). The plate-like evaporator having a lower refrigerating capacity (19) has a section (26) which is provided with the injection position (32) for the coolant and which is at least thermally decoupled to the greatest possible extent from the rest of the plate surface (20) of the evaporator (19).

The invention provides a modular evaporator structure and a combined base station air conditioner provided with the same. An evaporating-refrigerating structure is mounted in a box and divides the inner containing space of the box into two parts: a first part directly communicated with the opening of the box, and a second part indirectly communicated with the opening portion of the box; vent holes in communication with the second part are formed on the box; an air gap for communicating the first part and the second part is arranged on the evaporating-refrigerating structure; along the direction from the first part to the second part, the thickness of the evaporating-refrigerating structure is basically uniform; the evaporating-refrigerating structure is bent towards the second part, thereby defining a concave cavity towards the first part; and an axial flow fan is mounted on the opening by a mounting plate. The evaporator refrigerating structure disclosed by the invention has a good refrigeration effect and a high output blast cavity, and can meet the refrigeration requirement of a large space such as a machine room.

The invention designs a detachable linear low-temperature pulse tube refrigerating machine and an experimental device. The detachable linear low-temperature pulse tube refrigerating machine is composed of a linear compressor, an after-stage cooler, a heat regenerator, a cold-end heat exchanger, a pulse tube, an inertia tube, a gas reservoir, a vacuum cover and a vacuum cover connecting piece. The heat regenerator is filled with two kinds of meshes of silk screens in a mixed mode. The inertia tube is of a two-section inertia tube structure. The cold-end heat exchanger adopts a slit structure to enhance heat exchange, and two sides of the cold-end heat exchanger protrude and are sealed by indium wires to ensure no air leakage at low temperature; one side of the cold-end heat exchanger is connected with the heat regenerator to plug an inner hole at the cold end, so that the axial heat conduction loss is reduced, and the refrigeration performance is improved; and one side of the cold-end heat exchanger is connected with the pulse tube, and a laminar flow screen at the cold end is pressed, and a conical structure ensures that a gas working medium can enter the pulse tube at a constant speed. The vacuum cover, the pulse tube and the vacuum cover connecting piece of the experimental device are connected through screws and can be freely detached, and the heat regenerator, the cold end heat exchanger and the pulse tube are wrapped in the vacuum cover, so that the vacuum environment of a cold head of the refrigerating machine is achieved, cold loss caused by heat conduction and convection is avoided, and experimental measurement is guaranteed.

The invention discloses a composite falling film evaporator and a refrigeration device, which mainly include a casing module, a liquid distributor, a refrigerant inlet, a refrigerant outlet, a frozen water inlet, a frozen water outlet, a lubricating oil collection bag and a housing, and the refrigerant is first In the inner tube of the bushing, it exchanges heat with the chilled water in the outer tube to perform dry evaporation. When the dryness of the refrigerant rises to a certain value, the remaining gas-liquid two-phase refrigerant is discharged from the inner tube of the bushing, and then sent to into the falling film liquid distributor for gas-liquid separation, and the separated liquid refrigerant is evenly distributed, and then undergoes secondary falling film evaporation on the outer surface of the casing. The invention can reduce the heat exchange area of ​​the conventional dry evaporator by about 15-25%, reduce the volume by about 30%, and can greatly reduce the overall manufacturing cost of the evaporator.

The invention provides a defrosting control method and device of an air-cooled refrigerator. The defrosting control method of the air-cooled refrigerator comprises the following steps: detecting an air pressure difference of air supply flow of the air-cooled refrigerator before and after the air supply flow passes through an evaporator of the air-cooled refrigerator; judging whether the air pressure difference of the air supply flow is greater than a preset first air pressure difference threshold value; if the air pressure difference of the air supply flow is greater than the preset first air pressure difference threshold value, triggering the air-cooled refrigerator to start a defrosting procedure; and if the air pressure difference of the air supply flow is not greater than the preset first air pressure difference threshold value, judging whether the operation rate of a compressor of the air-cooled refrigerator is greater than a preset operation rate threshold value, and if the operation rate of the compressor is greater than the preset operation rate threshold value, judging whether the frosting thickness of the evaporator reaches a level where defrosting is needed. Therefore, defrosting can be carried out according to the actual frosting condition of the evaporator, and the refrigerator cold loss caused by frequent defrosting and the reduction of the heat exchange efficiency due to untimely defrosting are avoided.

A humidity adjusting device for a semiconductor refrigeration box comprises a TEC (Thermoelectric Cooler) (1) mounted on the refrigeration box (10). One side of the TEC (1) is connected with a cool-end heat exchanger (2) arranged in a box body of the refrigeration box (10), and the other side of the TEC (1) is connected with a hot-end heat exchanger (3) arranged outside the box body. An inner circulation fan (4) is arranged on the cool-end heat exchanger (2); an in-box temperature sensor, an in-box humidity sensor, and a controller capable of conditioning working voltages of the TEC (1) and the inner circulation fan (4) are further arranged in the box body; and the in-box temperature sensor and the in-box humidity sensor are both connected with the controller. The device can realize a constant-temperature dehumidifying function by using former refrigeration equipment of the refrigeration box (10), and additionally arranging the controller for conditioning the working voltage of the inner circulation fan (4). Further provided is a humidity adjusting method for the semiconductor refrigeration box, which stores cooling capacity in the cool-end heat exchanger (2) by rapidly refrigerating and turning off the inner circulation fan at a cool end simultaneously, and realizes the constant-temperature dehumidifying function by rapidly increasing the working voltage of the inner circulation fan (4) and carrying out rapid humidity adjustment. The control method has no cooling capacity loss, can individually adjust the humidity, and can monitor a relative humidity value in the refrigeration box in real time. The device is simple in structure and low in manufacturing cost.

The invention discloses an energy-saving air conditioner, which relates to the technical field of air conditioning and refrigeration, and includes a refrigeration system, a ventilation system and a control system. The refrigeration system includes an air-cooled circulation system and a water-cooled circulation system. The first cold water plate heat exchanger; the water cooling circulation system includes a cooling tower, a wet bulb thermometer and a cooling pipe are arranged on the side wall of the cooling tower, a circulating water tank is arranged at the bottom of the cooling tower, and a spray head is arranged in the cooling tower, and the spray head passes through The pipeline is arranged in communication with the circulating water tank, and a water pumping device is also arranged on one side of the cooling tower; the ventilation system includes an air conditioner inner unit and a second cold water plate heat exchanger. The invention provides an energy-saving air conditioner with diversified refrigeration modes, low energy consumption for refrigeration, few compressor usage times and long air conditioner life.

The invention discloses an energy-saving condensation box which comprises a condensation box body. A fan is fixedly connected to the top of the condensation box body; a fan is fixedly connected to theinner wall of the top of the fan; insulating plates are fixedly connected to the outer walls on the left and right sides of the condensation box body; a grid net is fixedly connected to the front surface of the condensation box body; nuts are fixedly connected to the left and right sides of the front surface of the grid net; the nuts are located on the surface of the fixed plate; the fixed plateis located on the outer side of the grid net; and a plate welded fin is fixedly connected to the inner wall of the grid net. By matching two ventilating pipes and a steel pipe, the copper tube is fixedly connected between the two ventilating pipes, the first ventilating pipe is located on the back of the plate welded fin, and the second ventilating pipe is located on the front surface of the plate-welded fin, so that the plate welded fin can be wrapped through the two ventilating pipes, and therefore, a purpose of insulating and avoiding loss of cooling air is achieved, and an energy-saving role is played.

The invention discloses a top transparent vertical heat preservation cabinet, refrigeration equipment and an assembly method. The top transparent vertical heat preservation cabinet comprises a vertical heat preservation shell. An opening is formed in the front face of the vertical heat preservation shell. The vertical heat preservation shell comprises an outer shell and an inner container arranged in the outer shell. A storage cavity is formed in the inner container. The outer shell comprises a U-shaped body, an upper beam and a backboard. The U-shaped body is provided with a bottom and two side portions. The upper beam and the backboard are arranged between the two side portions of the U-shaped body. Detachable decoration boards are arranged on the outer portions of the two side portions of the U-shaped body. A window communicating with the storage cavity is arranged at the top of the inner container. A window frame is arranged on the inner ring of the window. The top transparent vertical heat preservation cabinet further comprises a heat preservation glass component. The heat preservation glass component is clamped on the window frame and covers the window. A foaming cavity is formed among the heat preservation glass component, the outer shell and the inner container. A foaming layer is formed in the foaming cavity. A user can check objects in a box from the top, and user experience and use convenience are improved.

The invention provides a refrigerating and freezing device. The refrigerating and freezing device comprises a high-temperature-stage refrigerating circulation loop and a low-temperature-stage refrigerating circulation loop. The high-temperature-stage refrigeration circulation loop comprises a first throttling device, a heat absorption pipe section and a first evaporator used for absorbing heat. The low-temperature-stage refrigeration cycle loop comprises a first low-temperature-stage condenser and a low-temperature-stage evaporator used for absorbing heat, and the first low-temperature-stage condenser is in thermal connection with the first evaporator; the heat absorption pipe section is arranged between an outlet of the first throttling device and an inlet of the first evaporator, or an inlet of the heat absorption pipe section is communicated with an outlet of the first evaporator; and the heat absorption pipe section is thermally connected with the first throttling device, so that a refrigerant flowing through the heat absorption pipe section exchanges heat with a refrigerant flowing through the first throttling device. The refrigerating and freezing device facilitates work of the whole refrigerating system, and the efficiency of the refrigerating and freezing device is improved.

The invention relates to an energy-saving refrigerator, which arranges the icing area on the inner wall of refrigeration room gate, therefore, without opening the refrigeration room drawer, the icing and ice extraction can be realized. And it arranges a drink area; a independent space sensor on the side wall of soft refrigeration room to deeply refrigerate the new food to quickly generate a lot of ice band to avoid hurting the food. The invention sets independent circuits for each functional area, and directly displays the temperature of each area and the environment temperature on the operation panel to apply the adjustment of user.