129results about How to "Sufficient air intake" patented technology

The indoor unit of air conditioner cabinet has three air inlets and three air outlets, including two side air outlets with guide plate driven with a step motor, and one front air outlet with wind frame comprising cover plat and wind guide bars and driven with a step motor. The indoor unit has a wind blowing range as wide as 180 deg horizontally and 135 deg vertically, homogeneous air blast temperature, wide air inlet range, great air inlet quantity, low noise and capacity of fast regulation on indoor temperature.

The invention provides a filter material, a filter element, a filter module and a machining method thereof. The filter material comprises rattan cores, rattan peels and poplar. At the first stage, the rattan cores are crushed into fibers and the rattan peels are softened and crushed into fibers; the poplar is crushed into fibers; at the second stage, all the materials are mutually dissolved; at the third stage, solid-liquid separation is carried out to obtain solid-state substances; the solid-state substances are dried to obtain the filter material; then the filter material is paved and rolled to obtain fiber cloth; the fiber cloth is subjected to die cutting and molding to obtain the filter module; cellulose acetate fibers which account for at least 30% of a ratio of the mixture is added to obtain a micro-filtration filter material; flower or Chinese herbal medicine fiber-shaped grains are added to obtain the filter material with fresh air attaching effect, and sterilization, deodorization and refreshing effects. According to the invention, the filtering effect is greatly increased and the service life of the filter element is prolonged; meanwhile, the air inlet quality is optimized and the air inflow is guaranteed; compared with other filter materials in the same grade, the filter material has small resistance, light weight, high capacity, environmental friendliness (combustible property) and low cost.

The invention relates to a burner, a burning heating method and burning heating equipment. The burner comprises a distributor chamber and gas mixing pipes, wherein the distributor chamber is provided with a cavity, and a fuel gas inlet is arranged on the distributor chamber; the inlet ends of the gas mixing pipes are communicated with the cavity of the distributor chamber so as to obtain fuel gas; the side wall of each gas mixing pipe is provided with at least one gas inlet hole used for absorbing combustion improver to be mixed with the fuel gas; and the outlet ends of the gas mixing pipes are used for providing mixing gas of the fuel gas and the combustion improver for burning. The burning heating method comprises the steps of distributing and leading the fuel gas into more than one gas mixing pipe; leading the combustion improver into the gas mixing pipes and mixing the combustion improver and the fuel gas in the gas mixing pipes through a set process to form the mixing gas; and enabling the mixing gas to flow out of the gas mixing pipes for burning. The burning heating equipment adopts the burner of the invention. The technical scheme provided by the invention improves the mixing effect of the fuel gas and air in the mode of burning after mixing, thereby improving the thermal efficiency and reducing the energy consumption and the environmental pollution.

The invention discloses an engine intake and exhaust control system and method. The engine intake and exhaust control system comprises an engine ECU, a gas circuit control valve and a double-effect pump. An exhaust gas bypass valve is arranged between an exhaust manifold and an exhaust pipe. The gas circuit control valve is connected with four gas circuits which are an EGR inlet pipe connected with the exhaust pipe, a bidirectional circulating pipe connected with an air inlet pipe, an intake branch pipe connected with an intake manifold and a pressurization gas pipe connected with the double-effect pump. The other end of the double-effect pump is connected with the intake branch pipe. On one hand, the double-effect pump serves as an EGR pump, enhances the capacity for introducing EGR exhaust gas and achieves stable adjustment of EGR within a whole working condition range; one the other hand, the double-effect pump serves as an electric air pressurizer, pressurizes air quickly and improves transient state response performance of an intake system. On-off conversion and control functions of the gas circuits are achieved through the gas circuit control valve, different requirements of an engine for recirculation exhaust gas or fresh air are met, and optimal power performance and exhaust performance are achieved.

The invention discloses an air conditioner with an air purification device, wherein the periphery of an air inlet of the air conditioner is movably connected with the air purification device, and the air purification device can selectively block the air inlet. The air conditioner is to integrate the prior air conditioner and an air purifier into a whole, and the air purification device is separated from the air inlet when the temperature and the humidity of indoor air need to be adjusted, thereby ensuring adequate air intake; when the cleanliness of the indoor air needs to be adjusted, the air purification device covers and blocks the air inlet, and can completely and effectively purify the indoor air due to the fact that the temperature and the humidity do not need to be adjusted at this time.

The invention discloses a noise-reducing and rain-proof drainage hood. The noise-reducing and rain-proof drainage hood comprises a cylinder body. The cylinder body comprises an upper cone cylinder anda lower cone cylinder. Each of the cylinder walls of the upper cone cylinder and the lower cone cylinder comprises an inner cylinder wall body, an outer cylinder wall body and a silencing layer. An open lower cone cap is mounted in the cylinder body. A water guide pipe is connected to the lower end of the lower cone cap. The water guide pipe inclines downwardly, penetrates the cylinder wall of the lower cone cylinder and extends out of the cylinder body. According to the noise-reducing and rain-proof drainage hood, noise enters from an air inlet, the noise is absorbed by a punching slicing plate of the lower cone cylinder and the silencing layer, then rebounded to a punching slicing plate of the upper cone cylinder and the silencing layer and then transmitted out through an air outlet; inthe process, the noise is subjected to multiple times of rebounding, slicing and noise reduction, the noise can be lowered to 50-60 dB, the slicing and noise reduction effects are ideal and meet andexceed the national emission standards, and the noise-reducing and rain-proof drainage hood has the function of eliminating the radiated noise of an air outlet of a chimney; and besides, the hood meets the requirements on ventilation and prevention of invasion of sand and dust blown by wind, rainwater and snow water and has the beneficial effects of being small in size, low in weight, easy and convenient to mount, low in cost and the like.

The double wheel rotor engine includes one case comprising cylinder body and cover; one main motion system with most parts in the cylinder and shaft extending beyond the cylinder; one gas distributing system comprising air strainer, total gas inlet pipe, turbocharger and other parts; one water or air cooling system; one lubricating system comprising lubricant tank, oil pipes, filtering and cooling supercharger, driving gear and lubricated parts; and one igniting system with power source, electronic igniting controller and spark plug. The present invention produces rotation power directly with the double wheel rotor engine, which has small size, light weight, great output power, low noise and easy cooling and is suitable for automobile, ship, small airplane, etc.

The present invention discloses a reciprocating-rotating power converting mechanism without crankshaft, and its engine and compressor, wherein the power changeover mechanism consists of the alligatoring ring frame 1, the power wheel 2 and the planet wheel 3 connected with the reciprocating power unit replaces the conventional crankshaft connecting rod system; the planet wheel 3 adopting the power wheel 2 as a center wheel and adopting the pull rod 23 as a swiveling jib can revolute around the power shaft 20 and rotate, and is respectively in cross-over connection with the power wheel 2 and the alligatoring ring frame 1, though transmission parts such as wheel gears; the foreside and the rear are end respectively ganged with the power wheel 2 and the alligatoring ring frame 1; then the reciprocating movement of the alligatoring ring frame 1 can be transformed into the continuous rotating motion of the power wheel 2, and the continuous rotating motion of the power wheel 2 can alao be transformed into the periodic reciprocating movement of the alligatoring ring frame 1; said power changeover mechanism as well as engine and compressor etc. using the mechanism are characterized by simple structure, high transmission efficiency, high energy conversion efficiency, excellent discharging performances and the like.

This invention provides an intake pipe structure of internal combustion engine, which may tangibly lock the connection part of the connection tube and the air filter without increasing the component number and the assembling time, and may keep the good sealability for a long time. The intake pipe (101) of internal combustion engine comprises: an air filter (54) for supplying purified air to the internal combustion engine, a connection tube (103) for connecting the air filter (54) and the internal combustion engine, a lock projection (109) mounted at a side wall (103a) of the connection tube (103). A wall part (108) is integrally mounted at the wall surface of the air filter (54) facing to the connection tube (103) along the connection tube (103). The wall part (108) is provided with a locking part (164) for locking the lock projection (109).

The present invention discloses a motorcycle air filter which comprises an air filter casing, an air filter cover, an air filter filtering core, an air inlet pipe and an air outlet pipe, wherein, the air outlet pipe is connected with an air outlet at the wall of the air filter casing; the air filter casing is buckled with the air filter cover; the air filter filtering core is arranged in an inner cavity formed by the air filter casing and the air filter cover; the air filter cover and the air inlet pipe are in an integral structure; the end of the air inlet pipe is open; a tubular air inlet connecting piece is assembled at the air inlet pipe by the open end of the air inlet connecting piece; the closed end of the air inlet connecting piece is provided with an air inlet. The motorcycle air filter can ensure that sufficient air enters into a carburetor, and the air and gasoline are atomized and mixed in the carburetor with good effect by reducing the air inlet resistance of the air filter and enlarging air inlet quantity, so that mixed gas enters into the engine and can burn entirely; the power and the torquemoment of the engine are all ensured; the motorcycle air filter reduces fuel consumption and also effectively reduces the tail gas emission at the same time.

The invention provides an ultra-silent diesel generating set and belongs to the technical field of generators. The ultra-silent diesel generating set comprises a diesel engine, a generator, a water tank, a base, a top cover and an outer shell. The outer shell comprises a front cover plate, a rear cover plate, a door plate and a rear plate. The front end of the water tank is connected with a water tank baffle, a front tank body is arranged on one side of the water tank baffle, and a rear tank body is arranged on the other side of the water tank baffle. One end of the front tank body is connected to the front cover plate, a wind guide inclined plate is connected to the interior of the front tank body in an inclined mode, and a silencer is connected in the front tank body. One end of the rear tank body is connected with the rear cover plate. The base, the rear cover plate and the door plate are all provided with air inlets, the back face of each air inlet is connected with a wind guide acoustic panel, and sound absorption cotton is evenly laid on the inner surface of the outer shell. According to the ultra-silent diesel generating set, through noise analysis on the diesel generating set, noise sources are explored, different design and improvement modes are applied to the noise sources, noise is lowered greatly, the structure is compact, and the heat dissipation effect is good.

The invention discloses an efficient generator unit with two cooling air ducts. The efficient generator unit with the two cooling air ducts comprises a unit shell and an engine type generator. The engine type generator comprises an engine cooling air channel and a motor cooling air channel. An air inlet of the engine cooling air channel is formed in a starter pull disk. An air outlet of the engine cooling air channel is formed in a muffler air outlet rubber cover. A cylinder head and a muffler are arranged in a closed channel formed between the air inlet and the air outlet of the engine cooling air channel. Air inlets of the motor cooling air channel are formed in the top, the side face and the bottom of an engine case cover respectively. An air outlet of the motor cooling air channel is formed in a motor end cover. A cooling fan and a motor are arranged in a closed channel formed between the air inlets and the air outlet of the motor cooling air channel. Blades of the cooling fan are of an arc-shaped cover structure. The two cooling air channels are independent of each other, so that the air channels is simplified, arrangement of the air channels is optimized, and the number of parts is reduced; the blades of the cooling fan are of the arc-shaped cover structure, so the air supply amount is increased, and the cooling effect of the generator is improved jointly.

The invention discloses an all-engaged variable wall thickness vortex vacuum pump. An inner side engagement molded line and an outer side engagement molded line of a movable vortex gear of the vortexvacuum pump and an inner side molded line and an outer side molded line of a stationary vortex gear are obtained from a vortex middle line formed by a circle involute and a high-order continuous curvein the normal direction in an equally-spaced manner. Molded lines of the outermost circles of the obtained vortex gears can be involved into engagement; the air suction capacity can be increased; inaddition, the vortex number required under the high pressure-ratio and large air capacity requirements is small; and the leakage rate is low. The vortex middle line is formed by connecting two arcs inthe center, wherein the two arcs are different in radius. When a final engagement point of a stationary vortex coincides with a final engagement point of a movable vortex, two formed minimum closed working cavities are unequal in volume. The volume ratios of two air suction cavities to the corresponding minimum closed working cavities can be equal, and thus the problems that at the moment when anexhaust port of an existing all-engaged vortex vacuum pump is opened, efficiency of the vortex vacuum pump is lowered and a vortex disc vibrates due to mixing of gases at different pressures are solved; and work efficiency of the vortex vacuum pump is improved.

The invention provides an air-conditioner which comprises a shell and a shielding part. An air flue is arranged in the shell, and at least two air openings communicated with the air flue are formed in the shell; and the shielding part is arranged on at least one air opening, can enter or exit from the air flue, and therefore the air flue wall surface molded line of the air flue is changed. By means of the air-conditioner, the problem that the air outlet comfort degree of the air-conditioner in the prior art is poor is solved.

The invention relates to a gas compressor impeller, which comprises a wheel disc, wherein the wheel disc is a circular disc, a shaft hole is formed in the center of the wheel disc, the center of one side of the wheel disc is provided with a shaft sleeve, the inner diameter of the shaft sleeve is identical to and corresponds to the diameter of the shaft hole formed in the wheel disc, the appearance of the shaft sleeve is in a horn shape, one end of a horn mouth of the shaft sleeve forms a whole with the wheel disc, and blades are uniformly distributed around the shaft sleeve. The gas compressor impeller is characterized in that the blades arranged on the end, far away from the wheel disc, of the shaft sleeve are arranged in a one-long-blade and one-short-blade alternate way, so that in the adjacent blades, one impeller is the long impeller, and the other impeller is the short impeller. When the gas compressor impeller is adopted, the fuel oil consumption can be reduced, and the occurrence of an overheat phenomenon of an engine is voided. The gas compressor impeller is applicable to an automobile engine supercharger.

The invention discloses an integral ventilated drying device for fodder manufacturing. The integral ventilated drying device comprises a base, a shell, a motor and a material feeding hopper, wherein ahollow shaft is arranged in the shell in a penetrating manner; the outer side of a left end of the hollow shaft is sleeved with an air exhausting box; an output shaft of the motor horizontally extends into the air exhausting box of the base; the outer side of a right end of the hollow shaft is sleeved with an air inlet box; the inner part of the shell is divided into a drying cavity on a right side and a dedusting cavity on a left side through a separation plate; and a baffle plate is fixed on a corresponding position in the hollow shaft so as to divide the inner part of the hollow shaft intoan air inlet cavity on a right side and an air exhausting cavity on a left side. According to the integral ventilated drying device, an integral hollow shaft is arranged, and corresponding separationis arranged, so that air inlet and air exhausting can be performed at the same time; hot air entering the device is in fully contact with fodders; the drying effect and efficiency of the fodders areimproved; generated hot steam can be exhausted from the other end of the hollow shaft in time; and flowing of air in the device is ensured, so that moisture can be emitted in time.

The invention provides an air conditioner indoor unit, an air inlet method for the air conditioner indoor unit and an air conditioner. According to the technical scheme, the air conditioner indoor unit comprises an air inlet structure, a PM2.5 monitoring sensor and a controller. The air inlet structure comprises a haze removal filtering screen. The haze removal filtering screen is arranged at an air inlet of the air conditioner indoor unit in a position-adjustable manner for blocking at least part of the air inlet. The PM2.5 monitoring sensor is used for monitoring the real-time PM2.5 value of the environment where the air conditioner indoor unit is located. The controller is used for controlling the haze removal filtering screen to open or close the air inlet according to the PM2.5 value. Accordingly, the air inlet of the air conditioner indoor unit is controlled to be closed when the air conditioner operates in the purification mode, and the air inlet of the air conditioner indoor unit is controlled to be opened when the air conditioner operates in the normal mode; and it is guaranteed that the air intake is sufficient when the air conditioner operates in the normal mode, and the problem that when an air conditioner indoor unit with a haze removal filtering screen operates in the normal mode, the normal operation of the air conditioner is influenced due to the blocking of the haze removal filtering screen in the prior art is solved.

The invention relates to a cam with symmetrical profile lines, comprising an intake cam and an exhaust cam. The angle of the working section of the intake cam is 54.2 degrees, the angle of the transition section of the intake cam is 25 degrees, the radius of the arc section of the intake cam is 20.6 mm, the overall height of the profile of the intake cam is 48.09 mm, the angle from the central line of the intake cam to the central line of a key slot is 3.5 degrees, the angle of the working section of the exhaust cam is 60.5 degrees, the angle of the transition section of the exhaust cam is 29 degrees, the radius of the arc section of the exhaust cam is 20 mm, the overall height of the profile of the exhaust cam is 47.916 mm, and the angle from the central line of the exhaust cam to the central line of a key slot is 107.5 degrees. The performance indexes of a diesel engine are improved by improving the profile line of the cam. The rated power of a test diesel engine is 103Kw / 2800r / min, and the power is raised from 88Kw to 103Kw at the same rotating speed; the torque is raised from 343N.m to 385N.m at the same rotating speed and the fuel consumption rate under the rated power is less than or equal to 245g / (Kw.h). Accordingly, the cam with symmetrical profile lines obviously improves the performance of the diesel engine.

The invention discloses a piston engine valve timing and variable lift driving system. On the basis of the shear thickening fluid critical speed phase change characteristic and the cam speed change curve driving rule, the effective length of a shear thickening tappet changing in the same direction as change of rotation speed of a cam is adaptively obtained according to the change of the rotation speed of the cam (or the rotation speed of an engine), the opening advance angle, the lift and the closing delay angle of a valve are automatically adjusted, and thus the dynamic property, the strengthening degree, the low temperature startability, the low speed stability, the economical efficiency and the exhaust cleanliness of the engine are improved. According to the technical scheme, the system is free of electronic control, simple in mechanical structure, reliable in work, convenient to arrange, low in cost, easy to maintain, smooth in engine power output and capable of being widely applied to driving valves of various piston engines.

The invention provides an electric turbocharging device and belongs to the field of automobile manufacturing. A turbocharging fan (3) is installed in front of a throttle of an automobile engine and behind an air filter for air inflow and supercharge of an engine cylinder. A vacuum tube amplifier (VTA) signal of an engine throttle position sensor (1) is sent to a control module (2) to control the rotation speed of the turbocharging fan (3). The rotation speed of a turbocharging fan motor is controlled through the VTA signal, air inflow amount which is large enough is guaranteed, necessary conditions are provided for explosive type quick combustion of fuel in the cylinder, the low-rotation-speed air inflow amount in the natural air suction engine is increased, and torque and output power of a medium-and-low-rotation-speed interval are improved.

The invention discloses an air conditioner indoor wall-mounted machine which comprises a machine shell, an air guide plate, a partition plate and a baffle. A first cavity, a second cavity located in the front side of the first cavity and an air outlet air channel located in the lower sides of the first cavity and the second cavity are limited in the machine shell. The air guide plate is configured to be rotationally arranged at the lower portion of the machine shell so that an air outlet located in the tail end of the air outlet air channel can be opened or closed. The partition plate is arranged between the first cavity and the second cavity and is configured to rise in a controlled manner to communicate with the first cavity and the second cavity. The baffle is arranged between the second cavity and the air outlet air channel and is configured to stretch in a controlled manner to cut off the second cavity and the air outlet air channel. The bottom end of the first cavity communicates with the air outlet air channel, multiple ventilation holes are formed in the front surface of the second cavity so that surrounding air can be allowed to enter the second cavity through the multiple ventilation holes and enter the first cavity from the second cavity, and then the air flows into the air outlet air channel and flows out through the air outlet.

The invention discloses an air feeding structure for an automobile. The air feeding structure for the automobile is arranged between an air feeding grid of the automobile and a corrugated tube. The air feeding structure is that an upper part and a lower part are combined to form a cavity; a main air inlet and a tubular body are formed in the cavity; a downwards-inclined flow guide plate is arranged at the main air inlet; a strip-shaped opening is formed in the wall of the tubular body of the flow guide plate; a main air inlet is formed in the lower side edge of the flow guide plate and communicated with the inner part of the tubular body through the strip-shaped opening; a space is formed between the lower side of the flow guide plate and the lower part of the tubular body and is divided into a main cavity and a secondary cavity through a separating plate, wherein the main cavity is communicated with the secondary cavity; a plurality of secondary air inlets are formed in the wall of the tubular body, close to the secondary cavity and used for communicating the secondary cavity with the tubular body. The invention further discloses an air feeding system for the automobile and the corresponding automobile. With the adoption of the air feeding structure, clean air at proper temperature can be provided to an engine.

The invention discloses a cyclone for separating oil smoke in a smoke ventilator. The cyclone comprises a main body. The main body is a hollow tubular structure which has an enclosed top end and has radial dimensions gradually decreased from top to bottom. A bottom opening of the main body is a bottom liquid outlet of the cyclone. A side wall of the upper part of the main body is provided with an air inlet tangent to the side wall. The cyclone also comprises a central gas-guide tube which is inserted into the center of the top of the main body and is arranged coaxially with the main body. A top opening of the central gas-guide tube is an air outlet of the cyclone. The cyclone is characterized in that the bottom end of the central gas-guide tube is arranged lower than the bottom of the air inlet, the area of the air inlet is represented by S1, the area of the main body at the largest caliber is represented by S2 and a S1 / S2 ratio is greater than or equal to 0.05 and less than or equal to 0.3. Cyclone for separating oil smoke in the smoke ventilator has a simple structure, can be processed conveniently, has enough air input and satisfies smoke ventilator use. The cyclone can be processed to form different structures and is arranged in different ways so that the cyclone is suitable for being used in smoke ventilators having different shaped and different purposes. The cyclone has very good oil smoke filtration purification effects.

The invention discloses a variable valve lift mechanism. The mechanism comprises a cam shaft, a valve bridge and two valves, and the valve bridge is connected between the valves; and the mechanism further comprises a first cam, second cams, a first piston and second pistons; the phase angle of the first cam and the phase angle of each second cam are different, and the first cam and the two secondcams are arranged on the cam shaft and act on one end of a first rocker arm and one ends of two second rocker arms respectively; the first piston is located at the other end of the first rocker arm; and the second pistons are located the other ends of the first rocker arm and the second rocker arms, and the first piston and the second pistons selectively act on the valves to enable the valves havedifferent lift. The first rocker arm and the second rocker arms do not need to be separated or combined when an engine is transformed between a high speed and a low speed, the noise of the variable lift mechanism is greatly reduced, the user experience is improved, and the risk of failure of the engine due to the fact that the two rocker arms cannot be separated or combined is also reduced.

The invention relates to a cylindrical heat exchanger, comprising a combustion cavity, a spiral screw sheel, an upper end cover and a lower end cover, wherein the combustion cavity is a cylinder with an opening at each of two ends thereof, strip fins are evenly distributed at the inner peripheral wall of the combustion cavity, the strip fins are parallel to the axial direction of the cylindrical combustion cavity, the two ends of the strip fins are extended to the openings of the two ends of the combustion cavity; the spiral screw sheel is sheathed on the combustion cavity, convex spiral lines are arranged on the inner peripheral wall of the spiral screw sheel, the inner edges of the convex spiral lines are in close integration with the outer wall surface of the combustion cavity, a spiral channel is formed between the outer wall of the combustion cavity and the inner wall of the spiral screw sheel; the upper end cover and the lower end cover are of cup shape respectively with an opening at the end face, respectively cover the two ends of the combustion cavity and the screw sheel and are fixed with the two ends of the combustion cavity and the spiral screw sheel by tight coupling; and the upper end cover is provided with a water inlet which is communicated with one end of the spiral channel, and the lower end cover is provided with a water outlet which is communicated with the other end of the spiral channel.The cylindrical heat exchanger of the invention features delicate and reasonable structure, convenient maintenance and cleaning, long service life, high thermal efficiency, energy conservation and durability.

The invention relates to a two-stroke high expansion ratio free piston internal combustion engine generator, and belongs to the field of energy and power. The generator mainly includes a free piston engine, a linear generator, and a connecting rod. A plurality of air inlet channels are opened in pistons, an air inlet door is arranged on each air inlet channel, and air inlet door springs and air inlet door damping are arranged between air inlet door gaskets and the pistons. Moments of opening and closing of the air inlet doors can be optimized by adjusting the relative position of the air inletdoor gaskets and the bottom of a cylinder and damping factors of the air inlet door damping, low compression ratio and high expansion ratio can be achieved on the two-stroke free piston engine, and the circulation heat efficiency can be further improved.

The invention relates to the technical field of take-out food equipment and in particular to an inflatable anti-collision take-out food box, comprising a take-out food box body, wherein the back sideof the take-out food box body is hinged to a box cover through a hinge; the top of the take-out food box body is provided with an opening; each of left and right sides of the take-out food box body isprovided with three groups of air inlets; and the left and right sides of the take-out food box body are in threaded connection with airflow inlet pipes communicating with the air inlets. The inflatable anti-collision take-out food box solves the problem that because of fast driving speed, food containers in the take-out food box are likely to repeatedly collide with the inner side of the take-out food box such that soup in the food containers is likely to splash out and causes inconvenience to diners. The inflatable anti-collision take-out food box is ingeniously designed. When a deliverer drives fast, airflow is generated inside a U-shaped air bag so as to ensure that the food containers are buffered during the collision process, and the soup in the food containers is unlikely to splashout in order for the diners to eat.

The invention discloses a top-outlet side-inlet type household dehumidifier, and the interior of the dehumidifier is divided into upper and lower layer structures by a middle separating plate (9), wherein an evaporator (6), a condenser (7) and a centrifugal fan volute (8) which are sequentially arrayed in parallel are supported in the upper layer structure by the middle separating plate (9); the evaporator (6) is placed at one side close to a front panel of the dehumidifier; a distance is reserved between the evaporator (6) and the condenser (7); an air-inducing side of the centrifugal fan volute (8) is parallel to a lateral heat-exchange side of the condenser (7); the direction of an air outlet of the centrifugal fan volute (8) is vertical upwards; the air outlet (5) is arranged on the top of a rear panel of the dehumidifier at the position corresponding to the air outlet of the centrifugal fan volute (8); and left air inlet and right air inlet are respectively formed on left and right side walls of the whole dehumidifier exterior at the positions corresponding to a windward side of the evaporator (6). By using the household dehumidifier, the settling space is reduced in the use process, the use convenience is promoted and the product is more beautiful.

The invention discloses a swing arm rotation type compressor which comprises a housing, a main shaft and an air guide pipe for communicating a two-stage compression chamber with an air inlet cavity or an air outlet cavity of a rotary valve, wherein the upper end surface of the housing is covered with an upper bearing sealing seat with a gland; an eccentric shaft section is formed in the middle of the main shaft; the inner circle of a rotary sleeve arranged in an inner cavity of the housing is connected with the eccentric shaft section of the main shaft through a sleeve bearing; the main shaft on the upper side and the lower side of the rotary sleeve is connected with the upper bearing seat and the housing through a pair of upper and lower rolling bearings; the rotary valve with the air inlet cavity and the air outlet cavity is arranged on the main shaft on the outer side of the upper bearing; the rotary valve is axially fixed by a locking nut through a valve plate and a gasket; an air inlet connector communicated with the air inlet cavity of the rotary valve and an air outlet connector communicated with the air outlet cavity of the rotary valve are arranged on the outer wall of the upper bearing seat; multiple sets of swing arm mechanisms contacted with the outer circle of the rotary sleeve are arranged along the inner circumferential direction of the housing; and the swing arm mechanisms, the housing, the rotary sleeve and the upper bearing seat form the two-stage compression chamber. According to the swing arm rotation type compressor, the functions of air suction, compression, air discharge and residual air expansion can be effectively achieved, multiple times of sequential compression operation can be finished by rotating the main shaft for a circle, the two-stage compression operation can be performed in each compression process, and the compressor is very small in frictional loss between moving parts, energy-saving, efficient and wide in application range.