CN218469276U - Outdoor unit and air conditioner - Google Patents
Outdoor unit and air conditioner Download PDFInfo
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- CN218469276U CN218469276U CN202222380575.3U CN202222380575U CN218469276U CN 218469276 U CN218469276 U CN 218469276U CN 202222380575 U CN202222380575 U CN 202222380575U CN 218469276 U CN218469276 U CN 218469276U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides an outdoor unit and an air conditioner, relating to the field of air conditioners; wherein, the off-premises station includes: an exhaust pipe of the compressor is connected with a first inlet pipe of the first outdoor heat exchanger through a first electromagnetic valve, connected with a second inlet pipe of the second outdoor heat exchanger through a fourth electromagnetic valve and connected with an air conditioning air pipe through a second electromagnetic valve and a fifth electromagnetic valve; the gas inlet pipe of the liquid separator is connected with the first inlet pipe through a third electromagnetic valve, the gas inlet pipe of the liquid separator is connected with the second inlet pipe through a sixth electromagnetic valve, and the gas inlet pipe of the liquid separator is connected with an air conditioner air pipe through a seventh electromagnetic valve. According to the air conditioner, when defrosting is performed, the first outdoor heat exchanger and the second outdoor heat exchanger are sequentially defrosted, so that continuous heating operation of the indoor unit is realized, the condition that defrosting of the outdoor unit affects continuous heating of the indoor unit is avoided, the heating comfort is improved, meanwhile, the energy consumption of stopping operation of the indoor unit due to defrosting is reduced, and the energy efficiency of a system is improved.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner technique and specifically relates to an off-premises station and air conditioner are related to.
Background
At present, when an air conditioning system needs defrosting in a heating mode, the operation mode of the air conditioning system is switched from a heating mode to a cooling mode, and the outdoor heat exchanger is defrosted by using the cooling mode. However, at this time, the indoor unit stops heating operation, which results in discontinuous heating and affects user comfort, and meanwhile, the air conditioning system is switched to a cooling mode for defrosting, which consumes ineffective power and reduces energy efficiency of the whole air conditioning system.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an off-premises station and air conditioner has alleviated the problem that the off-premises station defrosting influences the continuous heating of indoor set, has realized the operation that the indoor set heats in succession, has promoted the travelling comfort that heats, has reduced simultaneously because defrosting stops indoor set moving energy resource consumption, has promoted the efficiency of system.
In a first aspect, an embodiment of the present invention provides an outdoor unit, including: the heat exchanger comprises a compressor, a gas-liquid separator, a first outdoor heat exchanger and a second outdoor heat exchanger; the high-pressure side of the compressor is connected with an exhaust pipe, the gas return side of the compressor is connected with one end of a gas-liquid separator, and the other end of the gas-liquid separator is connected with a gas-liquid separation inlet pipe; the exhaust pipe is connected with a first inlet pipe of the first outdoor heat exchanger through a first electromagnetic valve, the exhaust pipe is connected with a second inlet pipe of the second outdoor heat exchanger through a fourth electromagnetic valve, and the exhaust pipe is connected with an air conditioning air pipe through a second electromagnetic valve and a fifth electromagnetic valve respectively; and the air distribution inlet pipe is connected with the first inlet pipe through a third electromagnetic valve, the air distribution inlet pipe is connected with the second inlet pipe through a sixth electromagnetic valve, and the air distribution inlet pipe is connected with an air conditioner air pipe through a seventh electromagnetic valve.
When the air conditioner is defrosted, the outdoor unit defrosts the first outdoor heat exchanger and the second outdoor heat exchanger in sequence, so that the continuous heating operation of the indoor unit is realized, the influence of defrosting of the outdoor unit on the continuous heating of the indoor unit is avoided, the heating comfort is improved, the energy consumption for stopping the operation of the indoor unit due to defrosting is reduced, and the energy efficiency of the system is improved.
Preferably, one end of the pipeline where the first electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the first inlet pipe; one end of the pipeline where the second electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the air conditioning air pipe; one end of the pipeline where the third electromagnetic valve is located is connected with the gas distribution inlet pipe, and the other end of the pipeline where the first electromagnetic valve is located is connected with the other end of the pipeline where the first electromagnetic valve is located and the first inlet pipe respectively; one end of the pipeline where the fourth electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the second inlet pipe; one end of the pipeline where the fifth electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the air conditioner air pipe; one end of the pipeline where the sixth electromagnetic valve is located is connected with the gas distribution inlet pipe, and the other end of the pipeline where the fourth electromagnetic valve is located is connected with the second inlet pipe and the other end of the pipeline where the fourth electromagnetic valve is located respectively; one end of the pipeline where the seventh electromagnetic valve is located is connected with the air distribution inlet pipe, and the other end of the pipeline is connected with the air conditioner air pipe.
Preferably, the outdoor unit further includes a first electronic expansion valve and a second electronic expansion valve; one end of the first electronic expansion valve is connected with an outlet of the first outdoor heat exchanger, one end of the second electronic expansion valve is connected with an outlet of the second outdoor heat exchanger, and the other end of the first electronic expansion valve and the other end of the second electronic expansion valve are both connected with an air conditioner liquid pipe.
Preferably, the outdoor unit further includes a first outdoor fan and a second outdoor fan; the first outdoor fan and the first outdoor heat exchanger are arranged correspondingly, and the second outdoor fan and the second outdoor heat exchanger are arranged correspondingly.
In a second aspect, an embodiment of the present invention further provides an air conditioner, where the air conditioner includes the outdoor unit of the first aspect and multiple indoor units connected in parallel; wherein, the quantity of outdoor unit is at least one.
Preferably, if the number of the outdoor units is at least two, the plurality of outdoor units are arranged in parallel.
Preferably, in the heating mode of the air conditioner, the first outdoor heat exchanger and the second outdoor heat exchanger perform evaporative cooling, the first solenoid valve, the fourth solenoid valve and the seventh solenoid valve are all in a closed state, the second solenoid valve, the third solenoid valve, the fifth solenoid valve and the sixth solenoid valve are in an open state, the first outdoor fan and the second outdoor fan are all in an open state, and the first electronic expansion valve and the second electronic expansion valve are all in an open state.
Preferably, in the defrosting mode while heating of the air conditioner, the first outdoor heat exchanger is used for condensation heating, the second outdoor heat exchanger is used for evaporation cooling, the first electromagnetic valve is in an open state, the second electromagnetic valve and the third electromagnetic valve are both in a closed state, the fourth electromagnetic valve and the seventh electromagnetic valve are both in a closed state, the fifth electromagnetic valve and the sixth electromagnetic valve are in an open state, the first outdoor fan is in a closed state, the second outdoor fan is in an open state, and the first electronic expansion valve and the second electronic expansion valve are both in an open state.
Preferably, the air conditioner further comprises an air conditioning air pipe; one end of an air conditioning air pipe is respectively connected with the other end of the pipeline where the second electromagnetic valve is located, the other end of the pipeline where the fifth electromagnetic valve is located and the other end of the pipeline where the seventh electromagnetic valve is located, and the other ends of the air conditioning air pipe are respectively connected with the plurality of indoor units connected in parallel; and an air side stop valve is arranged on the air pipe of the air conditioner.
Preferably, the air conditioner further comprises an air conditioner liquid pipe; one end of the air conditioner liquid pipe is respectively connected with the first electronic expansion valve and the second electronic expansion valve, and the other end of the air conditioner liquid pipe is respectively connected with the plurality of indoor units connected in parallel; and a liquid side stop valve is arranged on the air conditioner liquid pipe.
The embodiment of the utility model provides a following beneficial effect has been brought:
the embodiment of the utility model provides an off-premises station and air conditioner through defrosting first outdoor heat exchanger and second outdoor heat exchanger in proper order when the defrosting, has realized the operation that the indoor set heats in succession, has avoided the off-premises station defrosting to influence the continuous heating of indoor set, has promoted the travelling comfort that heats, has reduced simultaneously because defrosting stops indoor set moving energy resource consumption, has promoted the efficiency of system.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating refrigerant circulation of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating refrigerant circulation of another air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating refrigerant circulation of another air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a refrigerant cycle of another air conditioner according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
To facilitate understanding of the present embodiment, the following detailed description will be given of embodiments of the present invention.
The embodiment of the utility model provides an outdoor unit, as shown in figure 1, outdoor unit 1 includes: the compressor 11, the gas-liquid separator 12, the first outdoor heat exchanger 131, and the second outdoor heat exchanger 132; wherein, the high pressure side of the compressor 11 is connected with an exhaust pipe 111, the gas return side is connected with one end of the gas-liquid separator 12, and the other end of the gas-liquid separator 12 is connected with a gas inlet pipe 121; the exhaust pipe 111 is connected to the first inlet pipe 1311 of the first outdoor heat exchanger 131 through the first solenoid valve 141, the exhaust pipe 111 is connected to the second inlet pipe 1321 of the second outdoor heat exchanger 132 through the fourth solenoid valve 144, and the exhaust pipe 111 is connected to the air-conditioning air pipe 31 through the second solenoid valve 142 and the fifth solenoid valve 145, respectively; and, the air distribution inlet pipe 121 is connected to the first inlet pipe 1311 through the third solenoid valve 143, the air distribution inlet pipe 121 is connected to the second inlet pipe 1321 through the sixth solenoid valve 146, and the air distribution inlet pipe 121 is connected to the air-conditioning air pipe 31 through the seventh solenoid valve 147.
Preferably, the compressor 11 is a scroll compressor or a rotor compressor, and the number may be single or multiple and parallel, and may be set according to actual situations.
Specifically, one end of the pipeline where the first electromagnetic valve 141 is located is connected to the exhaust pipe 111, and the other end is connected to the first inlet pipe 1311; one end of the pipeline where the second electromagnetic valve 142 is located is connected with the exhaust pipe 111, and the other end is connected with the air-conditioning air pipe 31; one end of the pipeline where the third electromagnetic valve 143 is located is connected with the gas distribution inlet pipe 121, and the other end of the pipeline where the first electromagnetic valve 141 is located is connected with the first inlet pipe 1311; one end of the pipeline where the fourth electromagnetic valve 144 is located is connected with the exhaust pipe 111, and the other end is connected with the second inlet pipe 1321; one end of the pipeline where the fifth electromagnetic valve 145 is located is connected with the exhaust pipe 111, and the other end is connected with the air-conditioning air pipe 31; one end of the pipeline where the sixth electromagnetic valve 146 is located is connected with the gas distribution inlet pipe 121, and the other end of the pipeline where the fourth electromagnetic valve 144 is located is connected with the second inlet pipe 1321; one end of the pipeline where the seventh electromagnetic valve 147 is located is connected to the air inlet branch pipe 121, and the other end is connected to the air-conditioning air pipe 31.
As shown in fig. 1, the outdoor unit 1 further includes a first electronic expansion valve 151 and a second electronic expansion valve 152; wherein, one end of the first electronic expansion valve 151 is connected with the outlet of the first outdoor heat exchanger 131, and one end of the second electronic expansion valve 152 is connected with the outlet of the second outdoor heat exchanger 132; the other end of the first electronic expansion valve 151 and the other end of the second electronic expansion valve 152 are both connected to the air-conditioning liquid pipe 32. In practical applications, the first electronic expansion valve 151 and the second electronic expansion valve 152 are both used for adjusting the refrigerant flow and controlling on/off.
And, the outdoor unit further includes a first outdoor fan 161 and a second outdoor fan 162; the first outdoor fan 161 is disposed corresponding to the first outdoor heat exchanger 131, and the second outdoor fan 162 is disposed corresponding to the second outdoor heat exchanger 132. In practical applications, the first outdoor fan 161 and the second outdoor fan 162 can be controlled to be on or off individually, that is, the controller of the air conditioner controls the first outdoor fan 161 and the second outdoor fan 162 to be on or off respectively.
Therefore, in the outdoor unit 1, it is not necessary to provide a four-way valve and a check valve on the exhaust pipe, and the sequential defrosting control of the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 is realized by the connection and control of seven electromagnetic valves, namely the first electromagnetic valve 141 to the seventh electromagnetic valve 147, so that the influence of the outdoor unit defrosting on the continuous heating of the indoor unit is avoided, the continuous heating operation of the indoor unit is realized, and the heating comfort is improved.
The outdoor unit 1 operates according to the following principle:
(1) When the air conditioner is operated for heating, the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 are both evaporators, the second solenoid valve 142, the third solenoid valve 143, the fifth solenoid valve 145 and the sixth solenoid valve 146 are all in an operating state, that is, an ON state, and the first solenoid valve 141, the fourth solenoid valve 144 and the seventh solenoid valve 147 are all in a non-operating state, that is, an OFF state; meanwhile, the coil temperature Te of the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 is detected, and in combination with the outdoor ambient temperature To and the heating running Time Th, the controller of the air conditioner comprehensively determines the frosting condition of the running outdoor unit and the conditions of defrosting, such as To being less than T1 (such as 7 ℃), te being less than T2 (such as-7 ℃), and Th being greater than Time1 (such as 50 min), and at this Time, the controller determines that the outdoor unit needs To enter the defrosting action;
(2) In the defrosting process, the controller firstly performs defrosting ON the first outdoor heat exchanger 131, at this time, the first outdoor heat exchanger 131 is changed from the evaporator to the condenser, the second outdoor heat exchanger 132 is still the evaporator, the first electromagnetic valve 141 is switched from OFF to ON, the second electromagnetic valve 142 and the third electromagnetic valve 143 are switched from ON to OFF, and the first outdoor fan 161 is switched from ON to OFF;
(3) Detecting the coil temperature Te of the first outdoor heat exchanger 131, and controlling the first outdoor heat exchanger 131 to quit the defrosting action when Te is more than T3 (such as 9 ℃) and the duration Tf is more than Time2 (such as 1 min); at this time, the first outdoor fan 161 is switched from OFF to ON, the first solenoid valve 141 is switched from ON to OFF, the second solenoid valve 142 and the third solenoid valve 143 are switched from OFF to ON, and the first outdoor heat exchanger 131 is controlled again to return to the air conditioner heating cycle;
(4) Similarly, the defrosting operation of the second outdoor heat exchanger 132 is continued, that is, at this time, the second outdoor heat exchanger 132 is switched from the evaporator to the condenser, the first outdoor heat exchanger 131 is switched from the condenser to the evaporator, the fourth electromagnetic valve 144 is switched from OFF to ON, the fifth electromagnetic valve 145 and the sixth electromagnetic valve 146 are switched from ON to OFF, and the second outdoor fan 162 is switched from ON to OFF;
(5) Similarly, detecting the coil temperature Te of the second outdoor heat exchanger 132, and when Te is greater than T3 (e.g. 9 ℃), and the duration Tf is greater than Time2 (e.g. 1 min), exiting the defrosting operation; at this time, the second outdoor fan 162 is switched ON from OFF, the fourth solenoid valve 144 is switched OFF from ON, the fifth solenoid valve 145 and the sixth solenoid valve 146 are switched ON from OFF, and the second outdoor heat exchanger 132 is controlled again to return to the air conditioner heating cycle.
In conclusion, through the continuous circulation operation of the above (1) - (5), the continuous heating operation of the indoor unit is realized, the continuous heating of the indoor unit is prevented from being influenced by the defrosting of the outdoor unit, the heating comfort is improved, the energy consumption for stopping the operation of the indoor unit due to the defrosting is reduced, and the energy efficiency of the system is improved.
Further, on the basis of the outdoor unit, the embodiment of the present invention further provides an air conditioner, as shown in fig. 1, the air conditioner includes the outdoor unit 1 and a plurality of indoor units 2 connected in parallel; wherein, the number of the outdoor units 1 is at least one. If the number of the outdoor units 1 is at least two, a plurality of the outdoor units 1 are arranged in parallel.
Wherein, the air conditioner also comprises an air-conditioning air pipe 31; one end of the air-conditioning air pipe 31 is connected to the other end of the pipe line in which the second electromagnetic valve 142 is located, the other end of the pipe line in which the fifth electromagnetic valve 145 is located, and the other end of the pipe line in which the seventh electromagnetic valve 147 is located, and the other end is connected to the plurality of indoor units 2 connected in parallel, respectively, and the air-conditioning air pipe 31 is provided with an air-side shutoff valve 311.
In addition, the air conditioner further includes an air conditioner liquid pipe 32; one end of the air-conditioning liquid pipe 32 is connected to the first electronic expansion valve 151 and the second electronic expansion valve 152, and the other end is connected to the plurality of indoor units 2 connected in parallel, and the liquid side stop valve 321 is provided in the air-conditioning liquid pipe 32.
And, as shown in fig. 1, each indoor unit 2 comprises: the indoor heat exchanger 21, the indoor fan 22 corresponding to the indoor heat exchanger 21, and the indoor electronic expansion valve 23 connected to the indoor heat exchanger 21 are all connected to the air conditioner liquid pipe 32.
It should be noted that, the parts are not mentioned in the outdoor unit 1 and the indoor unit 2, and the existing air conditioner can be specifically referred to, which is not described herein in detail in the embodiments of the present invention.
For the air conditioner, when defrosting is needed during operation in the heating mode, the defrosting operation is performed on the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 in sequence, so that the situation that the defrosting operation of the outdoor unit 1 affects the continuous heating of the indoor unit 2 is avoided, the continuous heating operation of the indoor unit 2 is realized, the heating comfort is improved, the energy consumption for stopping the operation of the indoor unit 2 due to defrosting operation is reduced, and the energy efficiency of the system is improved.
Specifically, in the air conditioner heating mode, the first and second outdoor heat exchangers 131 and 132 are cooled by evaporation, the first, fourth, and seventh solenoid valves 141, 144, and 147 are all in a closed state, the second, third, fifth, and sixth solenoid valves 142, 143, 145, and 146 are in an open state, the first and second outdoor fans 161 and 162 are in an open state, and the first and second electronic expansion valves 151 and 152 are in an open state.
When the defrosting condition is satisfied, that is, in the defrosting mode of the air conditioner while heating, the first outdoor heat exchanger 131 condenses and heats, the second outdoor heat exchanger 132 evaporates and cools, the first solenoid valve 141 is in an open state, the second solenoid valve 142 and the third solenoid valve 143 are both in a closed state, the fourth solenoid valve 144 and the seventh solenoid valve 147 are both in a closed state, the fifth solenoid valve 145 and the sixth solenoid valve 146 are in an open state, the first outdoor fan 161 is in a closed state, the second outdoor fan 162 is in an open state, and the first electronic expansion valve 151 and the second electronic expansion valve 152 are both in an open state. And, after the defrosting of first outdoor heat exchanger 131 was accomplished, switch into evaporation refrigeration to control second outdoor heat exchanger 132 condensation and heat, and refer to the process that first outdoor heat exchanger 131 condensation heated, the state of the solenoid valve that adaptability adjustment second outdoor heat exchanger 132 corresponds and the outdoor fan of second, the embodiment of the utility model discloses no longer detailed description here. For convenience of understanding, the continuous heating operation of the indoor units will be described by taking an example in which the air conditioner includes one outdoor unit and two indoor units. The specific working process is as follows:
(1) When the air conditioner is in heating operation, the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 are both evaporators, the first outdoor fan 161 and the second outdoor fan 162 are in an ON state, the first electronic expansion valve 151 and the second electronic expansion valve 152 are both in an ON state, the second solenoid valve 142, the third solenoid valve 143, the fifth solenoid valve 145 and the sixth solenoid valve 146 are all in an ON state, which is an operating state, and the first solenoid valve 141, the fourth solenoid valve 144 and the seventh solenoid valve 147 are all in a non-operating state, which is an OFF state; at this time, as shown in fig. 2, the high-pressure refrigerant on the discharge side of the compressor 11 is merged into the air-conditioning air pipe 31 through the second solenoid valve 142 and the fifth solenoid valve 145, enters the indoor unit 2 for heating, and the refrigerant returning to the air-conditioning liquid pipe 32 from the indoor unit 2 enters the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 through the first electronic expansion valve 151 and the second electronic expansion valve 152, respectively, is evaporated, returns to the air inlet pipe 121 through the third solenoid valve 143 and the sixth solenoid valve 146, and finally returns to the compressor 11 through the gas-liquid separator 12 for air return, thereby forming a heating cycle;
(2) In the heating process, detecting the coil temperature Te of the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132, combining the outdoor environment temperature To and the heating running Time Th, and comprehensively judging the frosting condition of the running outdoor unit and the condition of defrosting by the controller of the air conditioner, wherein To is less than T1 (such as 7 ℃), te is less than T2 (such as-7 ℃), and Th is greater than Time1 (such as 50 min), and at the moment, the controller judges that the outdoor unit needs To enter the defrosting action;
(3) When the defrosting action is detected to be required, the controller firstly carries out defrosting ON the first outdoor heat exchanger 131, at this time, the first outdoor heat exchanger 131 is switched from the evaporator to the condenser, the first electromagnetic valve 141 is switched from OFF to ON, the second electromagnetic valve 142 and the third electromagnetic valve 143 are switched from ON to OFF, and the first outdoor fan 161 is switched from ON to OFF; as shown in fig. 3, a part of the high-temperature and high-pressure refrigerant discharged by the compressor 11 enters the first outdoor heat exchanger 131 through the first electromagnetic valve 141 for defrosting, and the other part of the high-temperature and high-pressure refrigerant enters the air-conditioning air pipe 31 through the fifth electromagnetic valve 145 for heating, so as to enter the indoor unit 2 for heating, the refrigerant condensed by the indoor unit 2 and the first outdoor heat exchanger 131 is merged, enters the second outdoor heat exchanger 132 through the second electronic expansion valve 152 for evaporation, returns to the air-distribution inlet pipe 121 through the sixth electromagnetic valve 146, and finally returns to the compressor 11 through the gas-liquid separator 12 for air return, i.e., the first outdoor heat exchanger 131 performs a defrosting operation, and the second outdoor heat exchanger 132 performs a heating operation, thereby forming a defrosting cycle while heating of the air-conditioning system;
(4) Simultaneously detecting the coil temperature Te of the first outdoor heat exchanger 131, and controlling the first outdoor heat exchanger 131 to quit defrosting when Te is more than T3 (such as 9 ℃) and the duration Tf is more than Time2 (such as 1 min); at this time, the first outdoor fan 161 is switched from OFF to ON, the first solenoid valve 141 is switched from ON to OFF, the second solenoid valve 142 and the third solenoid valve 143 are switched from OFF to ON, and the first outdoor heat exchanger 131 is controlled again to return to the air conditioner heating cycle shown in fig. 2;
(5) At this time, the defrosting operation of the second outdoor heat exchanger 132 is continued, that is, at this time, the second outdoor heat exchanger 132 is switched from the evaporator to the condenser, the fourth solenoid valve 144 is switched from OFF to ON, the fifth solenoid valve 145 and the sixth solenoid valve 146 are switched from ON to OFF, and the second outdoor fan 162 is switched from ON to OFF; as shown in fig. 4, a part of the high-temperature and high-pressure refrigerant discharged by the compressor 11 is collected into the air-conditioning air pipe 31 through the second electromagnetic valve 142, enters the indoor unit 2 for heating, and the other part enters the second outdoor heat exchanger 132 through the fourth electromagnetic valve 144 for defrosting, and the refrigerant condensed by the indoor unit 2 and the second outdoor heat exchanger 132 is collected and enters the first outdoor heat exchanger 131 through the first electronic expansion valve 151 for evaporation, and then returns to the air inlet pipe 121 through the third electromagnetic valve 143, and finally returns to the compressor 11 through the gas-liquid separator 12 for air return, that is, the second outdoor heat exchanger 132 performs a defrosting operation, and the first outdoor heat exchanger 131 performs a heating operation, so that a defrosting cycle while heating of the air-conditioning system is formed;
(6) Similarly, detecting the coil temperature Te of the second outdoor heat exchanger 132, and when Te is greater than T3 (e.g. 9 ℃), and the duration Tf is greater than Time2 (e.g. 1 min), exiting the defrosting operation; at this time, the second outdoor fan 162 is switched ON from OFF, the fourth solenoid valve 144 is switched OFF from ON, the fifth solenoid valve 145 and the sixth solenoid valve 146 are switched ON from OFF, and the second outdoor heat exchanger 132 is controlled again to return to the air conditioner heating cycle shown in fig. 2.
Therefore, through the continuous circulating operation of the steps (1) to (6), the continuous heating operation of the indoor unit is realized, the continuous heating of the indoor unit is prevented from being influenced by the defrosting of the outdoor unit, the heating comfort is improved, meanwhile, the energy consumption for stopping the operation of the indoor unit due to the defrosting is reduced, and the energy efficiency of the system is improved.
In addition, as shown in fig. 2, when the plurality of indoor units are fully turned on to heat, both the first outdoor heat exchanger 131 and the second outdoor heat exchanger 132 are evaporators, matching the indoor units operating under a large load; in order to deal with heating of part of the indoor units, as shown in fig. 5, only the upper indoor unit 2 is operated, and the lower indoor unit is not operated, at this time, one of the outdoor heat exchangers may be turned off to operate, and only the other outdoor heat exchanger may be operated, where the first outdoor heat exchanger 131 is an evaporator, and the second outdoor heat exchanger 132 is shut down, so that the operation of the air conditioning system is more matched.
In summary, the air conditioner has the following advantages: (1) the continuous heating of the indoor unit can be realized, and the outdoor heat exchanger cannot be stopped due to defrosting; (2) the indoor unit continuously heats, so that the heating comfort of customers is improved, the energy consumption for stopping the operation of the indoor unit due to defrosting is reduced, and the system energy efficiency is improved; (3) the defrosting (condenser) and heating (evaporator) of the two outdoor heat exchangers are switched simply, and stable and quick switching is realized; (4) the four-way valve and the one-way valve are not required to be arranged, and the running control of refrigeration, heating and defrosting of the air conditioning system is realized through the connection and the control of a plurality of electromagnetic valves; (5) the air conditioning system with the air cooling plate exchange function can be expanded to air conditioning systems with different functions, such as an air conditioning system with an air cooling plate exchange function, an air conditioning system with enhanced vapor injection function, an air conditioning system with a compressor for secondary compression and the like, and the application range is wide.
The device provided by the embodiment of the invention can be specific hardware on equipment or software or firmware installed on the equipment and the like. The embodiment of the present invention provides an air conditioner, which has the same technical effects as the aforementioned outdoor unit embodiment, and for the sake of brief description, the embodiment of the air conditioner partially does not refer to the parts, and can refer to the corresponding contents in the aforementioned outdoor unit embodiment. It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the above-described embodiment of the outdoor unit, and are not described herein again.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, each functional unit in the embodiments provided in the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An outdoor unit, comprising: the heat exchanger comprises a compressor, a gas-liquid separator, a first outdoor heat exchanger and a second outdoor heat exchanger; the high-pressure side of the compressor is connected with an exhaust pipe, the gas return side of the compressor is connected with one end of the gas-liquid separator, and the other end of the gas-liquid separator is connected with a gas-liquid separation inlet pipe;
the exhaust pipe is connected with a first inlet pipe of the first outdoor heat exchanger through a first electromagnetic valve, the exhaust pipe is connected with a second inlet pipe of the second outdoor heat exchanger through a fourth electromagnetic valve, and the exhaust pipe is respectively connected with an air conditioning pipe through a second electromagnetic valve and a fifth electromagnetic valve; and the air distribution inlet pipe is connected with the first inlet pipe through a third electromagnetic valve, the air distribution inlet pipe is connected with the second inlet pipe through a sixth electromagnetic valve, and the air distribution inlet pipe is connected with the air conditioning air pipe through a seventh electromagnetic valve.
2. The outdoor unit of claim 1, wherein one end of the pipe where the first solenoid valve is located is connected to the discharge pipe, and the other end thereof is connected to the first inlet pipe; one end of the pipeline where the second electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the air-conditioning air pipe; one end of the pipeline where the third electromagnetic valve is located is connected with the gas distribution inlet pipe, and the other end of the pipeline where the third electromagnetic valve is located is connected with the other end of the pipeline where the first electromagnetic valve is located and the first inlet pipe respectively; one end of the pipeline where the fourth electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the second inlet pipe; one end of the pipeline where the fifth electromagnetic valve is located is connected with the exhaust pipe, and the other end of the pipeline is connected with the air-conditioning air pipe; one end of the pipeline where the sixth electromagnetic valve is located is connected with the gas distribution inlet pipe, and the other end of the pipeline where the fourth electromagnetic valve is located is connected with the second inlet pipe; and one end of the pipeline where the seventh electromagnetic valve is located is connected with the air distribution inlet pipe, and the other end of the pipeline is connected with the air conditioner air pipe.
3. The outdoor unit of claim 1, further comprising a first electronic expansion valve and a second electronic expansion valve; one end of the first electronic expansion valve is connected with an outlet of the first outdoor heat exchanger, one end of the second electronic expansion valve is connected with an outlet of the second outdoor heat exchanger, and the other end of the first electronic expansion valve and the other end of the second electronic expansion valve are both connected with an air conditioner liquid pipe.
4. The outdoor unit of claim 1, further comprising a first outdoor fan and a second outdoor fan; the first outdoor fan is arranged corresponding to the first outdoor heat exchanger, and the second outdoor fan is arranged corresponding to the second outdoor heat exchanger.
5. An air conditioner characterized by comprising the outdoor unit according to any one of claims 1 to 4 and a plurality of indoor units connected in parallel; wherein, the quantity of outdoor unit is at least one.
6. The air conditioner according to claim 5, wherein if the number of the outdoor units is at least two, a plurality of the outdoor units are arranged in parallel.
7. The air conditioner according to claim 5, wherein in the air conditioner heating mode, the first outdoor heat exchanger and the second outdoor heat exchanger both perform evaporative cooling, the first solenoid valve, the fourth solenoid valve and the seventh solenoid valve are all in a closed state, the second solenoid valve, the third solenoid valve, the fifth solenoid valve and the sixth solenoid valve are in an open state, the first outdoor fan and the second outdoor fan are all in an open state, and the first electronic expansion valve and the second electronic expansion valve are all in an open state.
8. The air conditioner according to claim 7, wherein in the defrosting mode while heating of the air conditioner, the first outdoor heat exchanger condenses and heats, the second outdoor heat exchanger evaporates and cools, the first solenoid valve is in an open state, the second solenoid valve and the third solenoid valve are both in a closed state, the fourth solenoid valve and the seventh solenoid valve are both in a closed state, the fifth solenoid valve and the sixth solenoid valve are in an open state, the first outdoor fan is in a closed state, the second outdoor fan is in an open state, and the first electronic expansion valve and the second electronic expansion valve are both in an open state.
9. The air conditioner of claim 5, further comprising an air conditioning duct; one end of the air conditioning air pipe is respectively connected with the other end of the pipeline where the second electromagnetic valve is located, the other end of the pipeline where the fifth electromagnetic valve is located and the other end of the pipeline where the seventh electromagnetic valve is located, and the other ends of the air conditioning air pipe are respectively connected with the plurality of indoor units which are connected in parallel; and an air side stop valve is arranged on the air pipe of the air conditioner.
10. The air conditioner of claim 5, further comprising an air conditioner liquid pipe; one end of the air conditioner liquid pipe is respectively connected with the first electronic expansion valve and the second electronic expansion valve, and the other end of the air conditioner liquid pipe is respectively connected with a plurality of indoor units which are connected in parallel; and a liquid side stop valve is arranged on the air conditioner liquid pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222380575.3U CN218469276U (en) | 2022-09-06 | 2022-09-06 | Outdoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222380575.3U CN218469276U (en) | 2022-09-06 | 2022-09-06 | Outdoor unit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218469276U true CN218469276U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222380575.3U Active CN218469276U (en) | 2022-09-06 | 2022-09-06 | Outdoor unit and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218469276U (en) |
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2022
- 2022-09-06 CN CN202222380575.3U patent/CN218469276U/en active Active
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