CN210373816U

CN210373816U - Compressor, fresh air conditioner and fresh air conditioning system

Info

Publication number: CN210373816U
Application number: CN201921360755.7U
Authority: CN
Inventors: 黄柏良; 邓李娇; 李欣; 叶强蔚; 陈远远; 孙妍
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-04-21
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a compressor, which comprises a housin, be equipped with motor, bent axle, first compression cylinder and second compression cylinder in the casing, the casing is equipped with first vapour and liquid separator, second vapour and liquid separator and exhaust oil separator outward, first compression cylinder is connected with first vapour and liquid separator, the one end and the second vapour and liquid separator of second compression cylinder are connected, the other end of second compression cylinder is connected with the exhaust oil separator. The utility model also discloses a fresh air conditioner, machine and air condensing units in the air conditioning. The utility model also discloses a fresh air conditioning system, including fresh air conditioner and fresh air pipeline. The utility model discloses a compressor, new trend air conditioner and new trend air conditioning system has following advantage: the utility model provides a pair of compressor solves the problem that the compressor lacks oil, the utility model provides a new trend air conditioner uses total heat exchange core and heat recovery heat exchanger, carries out twice heat recovery to indoor airing exhaust, reduces the energy waste of airing exhaust, improves the system efficiency.

Description

Compressor, fresh air conditioner and fresh air conditioning system

Technical Field

The utility model relates to an air conditioning technology field, in particular to compressor, new trend air conditioner and new trend air conditioning system.

Background

The fresh air system of the air conditioner is one of three air circulation systems of the air conditioner, namely an indoor air circulation system, an outdoor air circulation system and a fresh air system. The fresh air system has the main functions of realizing the circulation and the ventilation between the room air and the outdoor air and purifying the air. Indoor muddy air is discharged to the outside through a fresh air system pipeline, indoor and outdoor air is formed, pressure difference is achieved, indoor and outdoor air exchange is completed, and air is refreshed. At present, the application of a direct evaporation type fresh air handling unit is more and more extensive, the fresh air handling unit mainly bears fresh air load, however, when the temperature and humidity state difference of indoor and outdoor air is large, particularly in a damp and hot area in summer or a cold area in winter, the fresh air exchange can generate load larger than closed cycle; in addition, in summer, in order to achieve dehumidification of outdoor fresh air, the evaporation temperature of the fresh air handling unit needs to be reduced as much as possible, and for the fresh air handling unit only provided with one evaporator, the evaporation temperature is usually low in order to achieve the dehumidification purpose, so that the system energy efficiency is low, and the energy waste is large.

Chinese patent publication No. CN 205373127U discloses a double-intake double-exhaust compressor, which has two compression cylinders, two gas-liquid separators, two air inlets and two exhaust ports, and can provide two evaporating temperatures and two condensing temperatures for a refrigeration system at the same time. Each movable part of the compressor (for example, the movable scroll of the scroll compressor, the rotor of the rotor compressor, the bearing, etc.) needs to be lubricated by lubricating oil to maintain the operation stability and reliability of each movable part and the whole compressor, but the exhaust gas of one compression cylinder of the compressor is directly discharged to the outside of the compressor shell, the lubricating oil of the compressor is discharged to the outside of the compressor along with the exhaust gas, so that the lubricating oil in the compressor is less and less, and the compressor is easy to be damaged due to oil shortage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compressor, new trend air conditioner and new trend air conditioning system, it is single that the oil shortage that solves two air inlet double air compressor and produce damages and traditional new trend dehumidifier air supply mode, the extravagant serious scheduling problem of energy.

In order to achieve the above object, the utility model discloses a specific technical scheme of compressor, new trend air conditioner and new trend air conditioning system as follows:

the utility model provides a compressor, includes the casing, be equipped with motor, bent axle, first compression cylinder and second compression cylinder in the casing, the casing is equipped with first gas-liquid separator, second gas-liquid separator and exhaust oil separator outward, first compression cylinder is connected with first gas-liquid separator, the one end and the second gas-liquid separator of second compression cylinder are connected, the other end and the exhaust oil separator of second compression cylinder are connected, the top of first gas-liquid separator is equipped with first gas inlet, the top of second gas-liquid separator is equipped with the second gas inlet, the casing top cap is equipped with first gas vent, exhaust oil separator top is equipped with the second gas vent, the bent axle transmits the revolving force of motor respectively for first rolling rotor in the first compression cylinder and the second rolling rotor in the second cylinder to compress the refrigerant.

Further, the inner cavity of the shell is fixedly provided with a cavity partition plate which divides the inner cavity of the shell into an upper cavity and a lower cavity, a through hole is formed in the center of the cavity partition plate, and the crankshaft penetrates through the hole and is fixed in the center of the shell.

Further, the motor comprises a motor stator and a motor rotor, the motor stator is fixed on the inner wall of the shell, and the motor rotor is sleeved on the crankshaft.

Further, an oil feeding pool is arranged at the bottom of the upper cavity, and a lower oil pool is arranged at the bottom of the lower cavity and used for collecting lubricating oil separated in the working process of the compressor.

Furthermore, the first gas-liquid separator and the first compression cylinder are fixedly connected through a first suction pipe, and the second gas-liquid separator and the second compression cylinder are fixedly connected through a second suction pipe.

Furthermore, the inner cavity of the exhaust oil separator is respectively provided with a first oil baffle plate and a second oil baffle plate, and the first oil baffle plate and the second oil baffle plate are provided with a plurality of vent holes at equal intervals.

Furthermore, the bottom of the exhaust oil separator is provided with an exhaust pipe and a second compression cylinder which are fixedly connected, and one side of the exhaust pipe is provided with an oil return pipe and a lower oil pool which are fixedly connected.

The fresh air conditioner comprises an air conditioner indoor unit and an air conditioner outdoor unit, wherein the air conditioner indoor unit and the air conditioner outdoor unit are fixedly connected through a refrigerant pipeline, the air conditioner outdoor unit comprises a first four-way valve, a condenser, a second four-way valve and a compressor as above, a D port of the first four-way valve is connected with a first exhaust port of the compressor, and a C port of the first four-way valve is connected with one end of the condenser.

Further, the air conditioning indoor unit includes a heat recovery heat exchanger, a first electronic expansion valve, a second electronic expansion valve, a high temperature evaporator, a low temperature evaporator, and refrigerant pipes connecting these components.

The utility model provides a fresh air conditioning system, includes fresh air pipeline and above fresh air conditioner, fresh air pipeline is including being used for sending into indoor air supply outlet with the outdoor air intake that outdoor new trend introduced with being used for outdoor air intake, follows outdoor air intake is flowed through in proper order and is just imitated filter screen, total heat exchange core, high-efficient filter screen, high temperature evaporator, low temperature evaporator, humidifier and indoor air supply outlet.

Furthermore, when the fresh air conditioning system operates in a refrigeration mode, the first four-way valve and the second four-way valve are both communicated with the port S and the port D and the port C, the condenser and the heat recovery heat exchanger are in a high-temperature state and dissipate heat to the outside, the heat recovery heat exchanger releases heat to indoor exhaust air, the exhaust air cools the heat recovery heat exchanger, namely, the exhaust air cold is recovered, and the exhaust air cold waste is avoided; the high-temperature evaporator and the low-temperature evaporator are in a low-temperature state and absorb heat from the outside.

Furthermore, when the fresh air conditioning system operates in a heating mode, the first four-way valve and the second four-way valve are both communicated with the D port and the S port and the C port, the condenser and the heat recovery heat exchanger are in a low-temperature state and absorb heat from the outside, the heat recovery heat exchanger absorbs heat from indoor exhaust air and recovers exhaust heat to avoid waste of exhaust heat, and the high-temperature evaporator and the low-temperature evaporator are in a high-temperature state and dissipate heat to the outside.

Furthermore, the indoor unit of the air conditioner further comprises an air valve and an outdoor air inlet cover plate, and switching of different air supply modes is achieved by adjusting the switch of the air valve and the switch of the outdoor air inlet cover plate.

Furthermore, the air valve baffle is positioned at the first position of the air valve baffle, the outdoor air inlet cover plate is opened, return air is not mixed with fresh air, and the return air passes through the total heat exchange core and the heat recovery heat exchanger and is discharged outdoors, so that a fresh air mode is realized; the air valve baffle is arranged between the first position of the air valve baffle and the second position of the air valve baffle, the outdoor air inlet cover plate is opened, part of return air is mixed with fresh air, and the mixture is sent into a room after being processed, so that an air mixing mode is realized; the air valve baffle is located air valve baffle second position, and outdoor air intake apron is closed, and the return air does not pass through the total heat exchange core, and the return air sends into indoorly behind high-efficient filter screen, high temperature evaporimeter, low temperature evaporimeter and the humidifier in proper order behind the air valve baffle first position, realizes the return air mode.

Furthermore, an included angle between the air valve baffle and the second position of the air valve baffle is 0-90 degrees.

Further, the air-conditioning indoor unit further comprises a carbon dioxide sensor, and the carbon dioxide sensor is arranged in the indoor air return channel and used for detecting the concentration of indoor carbon dioxide.

Furthermore, the condenser is connected with the high-temperature evaporator in series through a first electronic expansion valve, and the heat recovery heat exchanger is connected with the low-temperature evaporator in series through a second electronic expansion valve.

The utility model discloses a compressor, new trend air conditioner and new trend air conditioning system has following advantage: the utility model provides a pair of compressor includes parts such as exhaust oil separator, oil return pipe, cylinder body space bar and last oil bath, solves the problem that the compressor lacks oil, the utility model provides a new trend air conditioner uses total heat exchange core and heat recovery heat exchanger, carries out twice heat recovery to indoor airing exhaust, and it is extravagant to reduce the energy of airing exhaust, improves the system efficiency. The utility model provides a pair of indoor air supply mode of new trend air conditioner includes new trend mode, return air mode, mixes the wind mode, opens the best air supply mode according to the room air quality condition, is guaranteeing under the good condition of room air quality, makes the system efficiency reach the optimum.

Drawings

Fig. 1 is a schematic view of the overall structure of the compressor of the present invention;

fig. 2 is a schematic structural view of a fresh air conditioning system according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an indoor unit of a fresh air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a fresh air conditioning system according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of an indoor unit of a fresh air conditioner according to an embodiment of the present invention.

The reference numbers in the figures illustrate: 1. a compressor; 11. a first gas-liquid separator; 111. a first air intake port; 112. a first inhalation tube; 12. a second gas-liquid separator; 121. a second air suction port; 122. a second suction duct; 13. a housing; 131. a first exhaust port; 132. an upper chamber; 133. a lower chamber; 134. an oil feeding pool; 135. an oil discharging pool; 136. a crankshaft; 137. a motor rotor; 138. a motor stator; 139. a first compression cylinder; 1310. a second compression cylinder; 1311. a chamber divider; 1312. a first rolling rotor; 1313. a second rolling rotor; 14. an exhaust gas oil separator; 141. a second exhaust port; 142. an exhaust pipe; 143. an oil return pipe; 144. a vent hole; 145. a first oil baffle plate; 146. a second oil baffle; 2. an air-conditioning indoor unit; 21. a first electronic expansion valve; 22. a second electronic expansion valve; 23. a heat recovery heat exchanger; 24. a primary filter screen; 25. a total heat exchange core; 26. a high-efficiency filter screen; 27. a high temperature evaporator; 28. a low temperature evaporator; 29. a humidifier; 210. an outdoor air outlet; 211. an outdoor air inlet; 212. an indoor air supply outlet; 213. an indoor return air inlet; 214. a carbon dioxide sensor; 215. an exhaust fan; 216. a blower; 217. an air valve; 218. an air valve motor; 219. an air valve baffle; 220 damper flapper first position; 221. a damper flap second position; 222. an outdoor air inlet motor; 223. an outdoor air inlet cover plate; 224. a first refrigerant interface; 225. a third refrigerant interface; 226. a fourth refrigerant interface; 227. a second refrigerant interface; 3. an air conditioner outdoor unit; 31. a first four-way valve; 32. a condenser; 33. a second four-way valve.

Detailed Description

In order to better understand the utility model discloses a purpose, structure and function, combine the figure below, it is right to combine the utility model relates to a compressor, new trend air conditioner and new trend air conditioning system do further detailed description.

As shown in fig. 1, the utility model provides a compressor 1, including casing 13, be equipped with the motor in the casing 13, first compression cylinder 139, second compression cylinder 1310, casing 13 is equipped with first vapour and liquid separator 11 outward, second vapour and liquid separator 12 and exhaust oil separator 14, first vapour and liquid separator 11's top is equipped with first induction port 111, second vapour and liquid separator 12's top is equipped with second induction port 121, casing 13 top cap is equipped with first exhaust port 131, exhaust oil separator 14 top is equipped with second exhaust port 141, the utility model provides a compressor 1 has two compression cylinders, two vapour and liquid separators, two induction ports and two gas vents, can provide two evaporating temperature and two condensing temperature for refrigerating system simultaneously.

The utility model provides a double suction double exhaust compressor 1 includes first compression cylinder 139 and second compression cylinder 1310, and two independent compression cylinders share a bent axle 136 drive first rolling rotor 1312 and second rolling rotor 1313. A chamber partition 1311 is fixedly disposed at the middle of the casing 13, a through hole is formed at the center of the chamber partition 1311, the crankshaft 136 passes through the through hole and is fixed at the center of the casing 13, and the crankshaft 136 has a long shaft portion, an eccentric portion, and a short shaft portion, and transmits the rotational force of the motor to the first rolling rotor 1312 in the first compression cylinder 139 and the second rolling rotor 1313 in the second compression cylinder 1310, respectively, to compress the refrigerant. For example, the motor stator 138 is fixed to the inner wall of the housing 13, the motor rotor 137 is sleeved on the crankshaft 136, the motor rotor 137 clasps and drives the crankshaft 136 through cold pressing, but not limited thereto, and the motor rotor 137 may also be fixed to the crankshaft 136 through shrink fitting and bonding. The motor rotor 137 rotates with respect to the motor stator 138 to transmit the rotational force of the motor to the first rolling rotor 1312 in the first compression cylinder 139 and the second rolling rotor 1313 in the second compression cylinder 1310 to compress the refrigerant.

Further, the bottom of the upper chamber 132 is provided with an upper oil pool 134, and the bottom of the lower chamber 133 is provided with a lower oil pool 135 for collecting the lubricating oil separated during the operation of the compressor 1, thereby avoiding the oil shortage of the compressor 1.

Based on the above embodiment, the first gas-liquid separator 11 and the first compression cylinder 139 are fixedly connected through the first suction pipe 112, and the second gas-liquid separator 12 and the second compression cylinder 1310 are fixedly connected through the second suction pipe 122.

The utility model discloses in mentioned exhaust oil separator 14, this exhaust oil separator 14 top is equipped with second gas vent 141, and exhaust oil separator 14 bottom is equipped with blast pipe 142 and second compression cylinder 1310 fixed connection, and blast pipe 142 one side is equipped with back oil pipe 143 and lower oil sump 135 fixed connection. A first oil baffle 145 and a second oil baffle 146 are respectively disposed at the upper and lower sides of the inner cavity of the exhaust oil separator 14, and a plurality of vent holes 144 are disposed at equal intervals on the first oil baffle 145 and the second oil baffle 146.

The utility model provides a compressor 1 has two independent compression cylinders, and a bent axle 136 drive first rolling rotor 1312 and second rolling rotor 1313 of sharing, compressor 1 are divided into upper chamber 132 and lower chamber 133 by chamber division board 1311, and upper chamber 132 is the working space of first compression cylinder 139, and lower chamber 133 is the working space of second compression cylinder 1310, and upper chamber 132 and lower chamber 133 are the independent space of non-intercommunication. The low-temperature and low-pressure gaseous refrigerant in the first suction port 111 passes through the first gas-liquid separator 11 and then enters the first compression cylinder 139 to be compressed, and the high-temperature and high-pressure gaseous refrigerant discharged from the first compression cylinder 139 passes through a gap between the motor stator 138 and the motor rotor 137 and then is discharged to the outside of the compressor 1 through the first discharge port 131. When the high-temperature and high-pressure gas refrigerant passes through the gap between the motor stator 138 and the motor rotor 137, the lubricating oil droplets carried by the refrigerant are intercepted by the windings of the motor stator 138, and the lubricating oil condensed into droplets is dropped into the upper oil pool 134. The low-temperature and low-pressure gaseous refrigerant in the second suction port 121 passes through the second gas-liquid separator 12 and then enters the second compression cylinder 1310 to be compressed, and the high-temperature and high-pressure gaseous refrigerant discharged from the second compression cylinder 1310 passes through the vent hole 144 of the oil-gas separator 14 and then is discharged to the outside of the compressor 1 through the second discharge port 141. When the high-temperature and high-pressure gas refrigerant passes through the exhaust oil separator 14, the lubricant oil droplets entrained by the refrigerant are intercepted by the first oil baffle 145 and the second oil baffle 146, and are condensed at the bottom of the exhaust oil separator 14, and then flow into the lower oil sump 135 through the oil return pipe 143. By the separation of the exhaust oil, the lubricating oil of the compressor 1 is separated and flows back to the upper oil pool 134 and the lower oil pool 135, and the oil shortage of the compressor 1 is avoided.

The utility model also provides a new trend air conditioner, including the compressor 1 that the above embodiment provided.

As shown in FIG. 2, the utility model also provides a fresh air conditioning system includes fresh air conditioner and fresh air pipeline. The utility model provides an embodiment fresh air conditioner includes machine 2 and the air condensing units 3 in the air conditioning, and machine 2 and the air condensing units 3 pass through refrigerant pipeline fixed connection in the air conditioning. The outdoor unit 3 of the air conditioner includes a first four-way valve 31, a condenser 32, a second four-way valve 33, and the double suction double exhaust compressor 1 provided in the above embodiment, a D port of the first four-way valve 31 is connected to a first exhaust port 131 of the compressor 1, and a C port of the first four-way valve 31 is connected to one end of the condenser 32. The indoor unit 2 of the air conditioner includes a heat recovery heat exchanger 23, a first electronic expansion valve 21, a second electronic expansion valve 22, a high temperature evaporator 27, a low temperature evaporator 28, and refrigerant pipes connecting these components, the first electronic expansion valve 21 is connected to the other end of the condenser 32, the other end of the first electronic expansion valve 21 is connected to the low temperature evaporator 28, the other end of the low temperature evaporator 28 is connected to an E port of a first four-way valve 31, and an S port of the first four-way valve 31 is connected to a first air intake 111 of the compressor 1. The second exhaust port 141 of the compressor 1 is connected to the D port of the second four-way valve 33, the C port of the second four-way valve 33 is connected to one end of the heat recovery heat exchanger 23, the other end of the heat recovery heat exchanger 23 is connected to the second electronic expansion valve 22, the other end of the second electronic expansion valve 22 is connected to the high temperature evaporator 27, the other end of the high temperature evaporator 27 is connected to the E port of the second four-way valve 33, and the S port of the second four-way valve 33 is connected to the second suction port 121 of the compressor 1. The compressor 1, the first four-way valve 31, the second four-way valve 33, the condenser 32, the heat recovery heat exchanger 23, the first electronic expansion valve 21, the second electronic expansion valve 22, the high-temperature evaporator 27, the low-temperature evaporator 28, and refrigerant pipelines connecting these components constitute a refrigeration cycle of the fresh air conditioner.

Furthermore, the fresh air conditioner also comprises an air duct circulating part, and the air duct circulating part comprises a primary filter screen 24, a total heat exchange core 25, a high-efficiency filter screen 26, a high-temperature evaporator 27, a low-temperature evaporator 28, a humidifier 29, a heat recovery heat exchanger 23 and an air duct communicated with the components which are sequentially arranged.

The fresh air pipeline comprises an outdoor air inlet 211 for introducing outdoor fresh air and an indoor air supply outlet 212 for sending the fresh air into the room, the solid arrow direction shown in fig. 2 is the flowing direction of the fresh air, and the fresh air flows through the primary filter screen 24, the total heat exchange core 25, the high-efficiency filter screen 26, the high-temperature evaporator 27, the low-temperature evaporator 28, the humidifier 29 and the indoor air supply outlet 212 from the outdoor air inlet 211 in sequence.

Further, refrigerant systems have both cooling and heating modes.

In the fresh air conditioning system of the embodiment, when the fresh air conditioning system operates in a refrigeration mode, the first four-way valve 31 and the second four-way valve 33 are both communicated with the port S and the port D and the port C, the condenser 32 and the heat recovery heat exchanger 23 are in a high-temperature state, heat is dissipated to the outside, the heat recovery heat exchanger 23 releases heat to indoor exhaust air, the exhaust air cools the heat recovery heat exchanger 23, namely, exhaust air cold is recovered, and exhaust air cold waste is avoided; the high-temperature evaporator 27 and the low-temperature evaporator 28 are in a low-temperature state, and absorb heat from the outside. Particularly, the opening degree of the first electronic expansion valve 21 and the second electronic expansion valve 22 is adjusted to make the temperature of the high-temperature evaporator 27 higher than that of the low-temperature evaporator 28, and when the air to be treated passes through the high-temperature evaporator 27, only the temperature is reduced, condensation is not generated, and then dehumidification is performed; the air to be treated is cooled and dehumidified as it passes through the low temperature evaporator 28. In the cooling mode, the humidifier does not work and does not humidify the air to be treated.

In the refrigeration mode, outdoor fresh air enters the total heat exchange core 25 after being filtered by the primary filter screen 24, and in the total heat exchange core 25, the outdoor fresh air with high temperature and high humidity and the indoor return air with low temperature and low humidity carry out heat and humidity exchange, so that the temperature and the moisture content of the fresh air are reduced, and the temperature and the moisture content of the return air are increased. The fresh air coming out of the total heat exchange core 25 is mixed with part of the return air (air mixing mode), the mixture is filtered by the high-efficiency filter screen 26 and then passes through the high-temperature evaporator 27, the evaporation temperature of the high-temperature evaporator 27 is higher (preferably, the evaporation temperature of the high-temperature evaporator is higher than the dew point temperature of the fresh air coming out of the total heat exchange core 25), the temperature of the fresh air is reduced and the moisture content of the fresh air is unchanged after passing through the high-temperature evaporator 27, the fresh air coming out of the high-temperature evaporator 27 is cooled and dehumidified by the low-temperature evaporator 28, the temperature is further reduced, the moisture content is reduced, the evaporation temperature of the low-temperature evaporator 28 is adjusted by adjusting the throttling effect of the first electronic expansion valve 21, so that the fresh air coming out of the low-temperature evaporator 28 meets the. In the air mixing mode, the indoor return air is divided into two parts, one part of the indoor return air and the fresh air are subjected to heat and moisture exchange in the total heat exchange core 25, then are subjected to heat exchange with the heat recovery heat exchanger 23 and then are discharged outdoors, and the other part of the indoor return air and the fresh air coming out of the total heat exchange core 25 are mixed, then sequentially pass through the high-efficiency filter screen 26, the high-temperature evaporator 27 and the low-temperature evaporator 2 and then are sent indoors again.

The refrigerant cycle has two evaporation temperatures, so that the refrigerant in the high-temperature evaporator 27 has a high evaporation pressure and a relatively small compression ratio. Compare single evaporating temperature refrigerant cycle, the utility model discloses used two evaporating temperature's refrigerant cycle system efficiency is higher. When the air to be treated passes through the high temperature evaporator 27, only the temperature is reduced and the moisture content is not reduced; when the air to be treated passes through the low temperature evaporator, both the temperature and the moisture content are reduced. For fresh air, the temperature and humidity control process is adopted.

In the fresh air conditioning system of the embodiment, when the air conditioning system operates in the heating mode, the first four-way valve 31 and the second four-way valve 33 are both communicated with the port D and the port S and the port C, the condenser 32 and the heat recovery heat exchanger 23 are in a low-temperature state, heat is absorbed from the outside, the heat recovery heat exchanger 23 absorbs heat from indoor exhaust air, the exhaust air heat is recovered, and exhaust air heat waste is avoided; the high-temperature evaporator 27 and the low-temperature evaporator 28 are in a high-temperature state, and dissipate heat to the outside. Specifically, the high temperature evaporator 27 is made lower in temperature than the low temperature evaporator 28 by the opening degree adjustment of the first electronic expansion valve 21 and the second electronic expansion valve 22, and the temperature rises as the air to be processed passes through the high temperature evaporator; the temperature of the air to be treated rises further when it passes through the low-temperature evaporator. When the heating mode is in operation, the humidifier 29 works according to the indoor return air humidity condition, humidifies the air to be treated when the indoor return air humidity is low, and does not humidify the air to be treated when the indoor return air humidity is high.

In the heating mode, outdoor fresh air enters the total heat exchange core 25 after being filtered by the primary filter screen 24, and in the total heat exchange core 25, the low-temperature and low-humidity outdoor fresh air and the high-temperature and high-humidity indoor return air are subjected to heat and humidity exchange, so that the temperature and the moisture content of the fresh air are increased, and the temperature and the moisture content of the return air are reduced. The fresh air from the total heat exchange core 25 is mixed with part of return air (air mixing mode), the mixture is filtered by the high-efficiency filter screen 26 and then passes through the high-temperature evaporator 27 and the low-temperature evaporator 28, the moisture content of the fresh air is unchanged and the temperature is raised twice, the condensation temperature of the low-temperature evaporator 27 can be adjusted by adjusting the throttling effect of the first electronic expansion valve 21, so that the fresh air from the low-temperature evaporator meets the requirement of air supply temperature, the fresh air is humidified by the humidifier 29, namely when the humidity of the indoor return air is low, the humidifier is opened, the moisture content is increased to the required requirement and is sent into the room. In the air mixing mode, the indoor return air is divided into two parts, one part of the indoor return air and the fresh air are subjected to heat and moisture exchange in the total heat exchange core 25, then are subjected to heat exchange with the heat recovery heat exchanger and then are discharged outdoors, and the other part of the indoor return air and the fresh air coming out of the total heat exchange core 25 are mixed, then sequentially pass through the high-efficiency filter screen 26, the high-temperature evaporator 27 and the low-temperature evaporator 28 and then are sent indoors again.

As shown in fig. 3, the utility model provides a fresh air conditioner indoor unit 2 structure. The indoor unit 2 of the air conditioner is divided into a fresh air channel and a return air channel, wherein the fresh air channel comprises an outdoor air inlet 211, a primary filter screen 24, a total heat exchange core 25, a blower 216, a high-efficiency filter screen 26, a high-temperature evaporator 27, a low-temperature evaporator 28, a humidifier 29 and an indoor air supply outlet 212; the return air channel comprises an indoor return air inlet 213, a total heat exchange core 25, a heat recovery heat exchanger 23, an exhaust fan 215 and an outdoor exhaust outlet 210. Preferably, the total heat exchange core 25 and the fresh air channel are the same core. The first refrigerant interface 224, the heat recovery heat exchanger, the second electronic expansion valve 22, the high-temperature evaporator 27, and the second refrigerant interface 227 are connected in sequence; the third refrigerant connection 225, the first electronic expansion valve 21, the low-temperature evaporator 28, and the fourth refrigerant connection 226 are connected in this order. The indoor unit 2 of the air conditioner is in communication with the outdoor unit 3 of the air conditioner through a first refrigerant connection 224, a second refrigerant connection 227, a third refrigerant connection 225, and a fourth refrigerant connection 226, and allows a refrigerant to flow between the indoor unit and the outdoor unit.

The indoor unit 2 of the air conditioner further comprises an air valve motor 218, an air valve 217, an air valve baffle 219, an outdoor air inlet motor 222, an outdoor air inlet cover plate 223, switches of the air valve 217 and the outdoor air inlet cover plate, and can realize switching of different air supply modes, wherein the air valve 217 and the outdoor air inlet cover plate are switched to achieve a fresh air mode, the fresh air mode comprises a fresh air mode, an air mixing mode and an air return mode, the fresh air mode comprises the air valve baffle 219 being located at a first position 220 of the air valve baffle, the outdoor air inlet cover plate 223 is opened, return air is not mixed with fresh air and is completely discharged to the outdoor after passing through the total heat exchange core 25 and the heat recovery heat exchanger 23, the air valve baffle 219 is located between a first position 210 of the air valve baffle and a second position 221 of the air valve baffle, the outdoor air inlet cover plate 223 is opened, a part of the return air is mixed with the fresh air and is treated and is sent into the indoor, the other part of the return air is discharged to the outdoor air after passing through the total heat exchange core 25 and the heat recovery heat exchanger 23, the air valve baffle 219 is adjusted to achieve an included angle β between the air valve baffle 219 and the air valve baffle 219, preferably equal to be equal to or more than or less than 0 DEG and equal to β DEG, the total air return air flow ratio of the fresh air valve baffle 221, the fresh air inlet motor mode is increased, and the fresh air flow ratio of the fresh.

TABLE 1 blow mode control

Further, the indoor unit further comprises a carbon dioxide sensor 214, the carbon dioxide sensor 214 is arranged in the indoor air return channel and used for detecting the concentration of indoor carbon dioxide, different air supply modes can be automatically operated according to the concentration of the indoor carbon dioxide, and the indoor air quality is guaranteed while energy conservation is achieved. Table 2 shows the operating conditions of each air supply mode, and the fresh air mode is operated when the carbon dioxide concentration is greater than or equal to 2000PPM, so that a large amount of fresh air is introduced in a short time to reduce the indoor carbon dioxide concentration, and the indoor air quality is ensured to be in a good state; when the concentration of carbon dioxide is more than or equal to 1000PPM and less than or equal to 2000PPM, a wind mixing mode is operated, part of indoor air is replaced by fresh air, the indoor air is kept in a good state, and meanwhile, an energy-saving effect is achieved; when the concentration of carbon dioxide is less than or equal to 1000PPM, the air return mode is operated, the indoor air quality is better, air exchange is not needed, and the purpose of energy conservation is realized by operating the air return mode. The fresh air mode, return air mode and mixed air mode operating conditions are shown in table 2.

TABLE 2 running conditions for each blowing mode

Condition	Blowing mode
		Carbon dioxide concentration less than or equal to 2000PPM	Fresh air mode
Carbon dioxide concentration is more than or equal to 1000PPM and less than or equal to 2000PPM	Mixed wind mode
		Carbon dioxide concentration is less than or equal to 1000PPM	Return air mode

The fresh air mode, the air mixing mode and the air return mode have purification functions, each air supply mode can be matched with the refrigeration mode and the heating mode of the refrigeration system for use, the functions of refrigeration, temperature reduction and dehumidification, heating or temperature rise and humidification of air to be treated are realized, and the indoor environment with constant temperature (refrigeration/heating), constant humidity (humidification and dehumidification), constant oxygen (low CO2 concentration) and constant cleanness (purification) is provided.

As shown in fig. 4 and 5, the utility model provides a second embodiment, condenser 32 establishes ties with high temperature evaporator 27 through first electronic expansion valve 21, and heat recovery heat exchanger 23 establishes ties with low temperature evaporator 28 through second electronic expansion valve 22, the utility model provides a first embodiment condenser 32 establishes ties with low temperature evaporator 28 through first electronic expansion valve 21, and heat recovery heat exchanger 23 establishes ties with high temperature evaporator 27 through second electronic expansion valve 22. The operation conditions of the cooling and heating modes, the operation conditions of the fresh air mode, the air mixing mode and the air return mode and the control conditions of the second embodiment are the same as those of the first embodiment, and are not described again.

The fresh air conditioning system provided by the embodiment can be applied to a household air conditioning refrigeration system and can also be applied to a vehicle air conditioning refrigeration system, the purposes of precooling and dehumidifying fresh air are achieved by adjusting the temperature of the evaporator, the indoor air supply mode comprises a fresh air mode, an air return mode and an air mixing mode, the best air supply mode is started according to the indoor air quality condition, and the system energy efficiency is optimized under the condition that the indoor air quality is good. And the energy efficiency of the fresh air conditioning system is improved by adopting the double-suction and double-discharge compressor 1. The utility model provides a double suction double exhaust compressor 1 with exhaust oil separator 14 has solved the oil shortage damage problem that double suction double exhaust compressor 1 produced.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A compressor is characterized by comprising a shell (13), wherein a motor, a crankshaft (136), a first compression cylinder (139) and a second compression cylinder (1310) are arranged in the shell (13), a first gas-liquid separator (11), a second gas-liquid separator (12) and an exhaust gas-oil separator (14) are arranged outside the shell (13), the first compression cylinder (139) is connected with the first gas-liquid separator (11), one end of the second compression cylinder (1310) is connected with the second gas-liquid separator (12), the other end of the second compression cylinder (1310) is connected with the exhaust gas-oil separator (14), a first air suction port (111) is arranged at the top of the first gas-liquid separator (11), a second air suction port (121) is arranged at the top of the second gas-liquid separator (12), a first exhaust port (131) is arranged on the top cover of the shell (13), and a second exhaust port (141) is arranged at the top of the exhaust gas-oil separator (14), the crankshaft (136) transmits the rotational force of the motor to a first rolling rotor (1312) in the first compression cylinder (139) and a second rolling rotor (1313) in the second cylinder, respectively, to compress refrigerant.

2. The compressor as claimed in claim 1, wherein a chamber partition plate (1311) is fixedly arranged in the inner cavity of the housing (13) to divide the inner cavity of the housing (13) into an upper chamber (132) and a lower chamber (133), a through hole is formed in the center of the chamber partition plate (1311), and the crankshaft (136) passes through the through hole and is fixed in the center of the housing (13).

3. The compressor of claim 1, wherein the motor comprises a motor stator (138) and a motor rotor (137), the motor stator (138) is fixed on an inner wall of the housing (13), and the motor rotor (137) is sleeved on the crankshaft (136).

4. The compressor according to claim 2, characterized in that the upper chamber (132) is provided with an upper oil sump (134) at the bottom, and the lower chamber (133) is provided with a lower oil sump (135) at the bottom for collecting the lubricating oil separated during the operation of the compressor (1).

5. Compressor according to claim 1, characterized in that the first gas-liquid separator (11) and the first compression cylinder (139) are fixedly connected by a first suction pipe (112), and the second gas-liquid separator (12) and the second compression cylinder (1310) are fixedly connected by a second suction pipe (122).

6. The compressor of claim 1, wherein the inner cavity of the exhaust oil separator (14) is provided with a first oil baffle plate (145) and a second oil baffle plate (146), and the first oil baffle plate (145) and the second oil baffle plate (146) are provided with a plurality of vent holes (144) at equal intervals.

7. The compressor as claimed in claim 4, wherein the bottom of the exhaust oil separator (14) is provided with an exhaust pipe (142) fixedly connected with the second compression cylinder (1310), and one side of the exhaust pipe (142) is provided with an oil return pipe (143) fixedly connected with the lower oil sump (135).

8. A fresh air conditioner is characterized by comprising an indoor air conditioner unit (2) and an outdoor air conditioner unit (3), wherein the indoor air conditioner unit (2) and the outdoor air conditioner unit (3) are fixedly connected through a refrigerant pipeline, the outdoor air conditioner unit (3) comprises a first four-way valve (31), a condenser (32), a second four-way valve (33) and the compressor (1) as claimed in any one of claims 1 to 7, a D port of the first four-way valve (31) is connected with a first exhaust port (131) of the compressor (1), and a C port of the first four-way valve (31) is connected with one end of the condenser (32).

9. Fresh air conditioner according to claim 8, characterized in that the air conditioning indoor unit (2) comprises a heat recovery heat exchanger (23), a first electronic expansion valve (21), a second electronic expansion valve (22), a high temperature evaporator (27) and a low temperature evaporator (28) and refrigerant pipes connecting these components.

10. Fresh air conditioning system, characterized in that, includes fresh air pipeline and the fresh air conditioner of claim 9, fresh air pipeline includes outdoor air intake (211) that is used for introducing outdoor fresh air and is used for sending fresh air into indoor air supply outlet (212), from outdoor air intake flow through in proper order primary filter screen (24), total heat exchange core (25), high efficiency filter screen (26), high temperature evaporimeter (27), low temperature evaporimeter (28), humidifier (29) and indoor air supply outlet (212).

11. The fresh air conditioning system according to claim 10, wherein when the fresh air conditioning system is in a cooling mode of operation, the first four-way valve (31) and the second four-way valve (33) are both in a high-temperature state, the port E is communicated with the port S, the port D is communicated with the port C, the condenser (32) and the heat recovery heat exchanger (23) dissipate heat to the outside, the heat recovery heat exchanger (23) releases heat to indoor exhaust air, and the exhaust air cools the heat recovery heat exchanger (23), i.e. the exhaust air cooling capacity is recovered, so that the waste of the exhaust air cooling capacity is avoided; the high-temperature evaporator (27) and the low-temperature evaporator (28) are in a low-temperature state and absorb heat from the outside.

12. The fresh air conditioning system according to claim 10, wherein when the fresh air conditioning system is in a heating mode, the first four-way valve (31) and the second four-way valve (33) are both in a state of E port and D port, and in a state of S port and C port, the condenser (32) and the heat recovery heat exchanger (23) are in a low temperature state, and absorb heat from the outside, and the heat recovery heat exchanger (23) absorbs heat from indoor exhaust air, recovers exhaust air heat, and avoids exhaust air heat waste, and the high temperature evaporator (27) and the low temperature evaporator (28) are in a high temperature state, and dissipate heat to the outside.

13. The fresh air conditioning system as claimed in claim 10, wherein the indoor unit (2) further comprises an air valve (217) and an outdoor air inlet cover plate, and the switching between different indoor air supply modes is realized by adjusting the on/off of the air valve (217) and the outdoor air inlet cover plate.

14. The fresh air conditioning system as claimed in claim 13, wherein the damper is located at a first position (220) of the damper, the outdoor air inlet cover plate (223) is opened, the return air is not mixed with the fresh air, and the whole air passes through the total heat exchange core (25) and the heat recovery heat exchanger (23) and is discharged to the outside, so that a fresh air mode is realized; the air valve baffle (219) is arranged between a first position (220) of the air valve baffle and a second position (221) of the air valve baffle, the outdoor air inlet cover plate (223) is opened, part of return air is mixed with fresh air, and the mixture is sent into a room after being processed, so that an air mixing mode is realized; blast gate baffle (219) are located blast gate baffle second position (221), and outdoor air inlet apron (223) are closed, and the return air does not pass through total heat exchange core (25), and the return air sends into indoorly behind high-efficient filter screen (26), high temperature evaporimeter (27), low temperature evaporimeter (28) and humidifier (29) in proper order behind blast gate baffle first position (220), realizes the return air mode.

15. Fresh air conditioning system according to claim 14, wherein the angle between the damper flap (219) and the damper flap second position (221) is 0 ° to 90 °.

16. Fresh air conditioning system according to claim 15, characterized in that the air conditioning indoor unit (2) further comprises a carbon dioxide sensor (214), and the carbon dioxide sensor (214) is arranged in an indoor return air (213) channel and used for detecting indoor carbon dioxide concentration.

17. Fresh air conditioning system according to claim 11, wherein the condenser (32) is connected in series with the high temperature evaporator (27) via a first electronic expansion valve (21), and the heat recovery heat exchanger (23) is connected in series with the low temperature evaporator (28) via a second electronic expansion valve (22).