CN210832213U - Air conditioner - Google Patents
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- CN210832213U CN210832213U CN201921515639.8U CN201921515639U CN210832213U CN 210832213 U CN210832213 U CN 210832213U CN 201921515639 U CN201921515639 U CN 201921515639U CN 210832213 U CN210832213 U CN 210832213U
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Abstract
The utility model discloses an air conditioner, wherein, air conditioner includes: the first refrigerant circulation system includes: the outdoor unit comprises a first compressor and a first outdoor heat exchanger, and the first indoor unit comprises a first indoor heat exchanger and a first indoor throttling device; a first exhaust pipe, a first intake pipe, and a first liquid-side piping; a first gas-side piping; the second refrigerant cycle system includes: a second indoor unit and a second outdoor unit, the second outdoor unit including a second compressor and a second outdoor heat exchanger, the second indoor unit including a second indoor heat exchanger and a second indoor throttling device; a second exhaust pipe, a second intake pipe, and a second liquid-side pipe; a second gas-side pipe; and the heat circulating device is used for transmitting the heat energy or the cold energy of the first indoor heat exchanger and the second indoor heat exchanger to the indoor space. The utility model discloses technical scheme is favorable to improving the travelling comfort when dehumidification.
Description
Technical Field
The utility model relates to an air conditioner technical field, in particular to air conditioner.
Background
Due to the complexity of weather, the air conditioner needs to have multiple functions at the same time to meet the requirements of people. For example, in order to overcome the weather with very high humidity, it is necessary for an air conditioner to have a dehumidifying function. However, the existing air conditioner with dehumidification function cannot provide enough heat energy to maintain the indoor temperature while dehumidifying.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air conditioner, aims at making the air conditioner have the function of dehumidification reheat.
In order to achieve the above object, the present invention provides an air conditioner, including:
a first refrigerant cycle system, the first refrigerant cycle system comprising:
the outdoor unit comprises a first compressor and a first outdoor heat exchanger, and the first indoor unit comprises a first indoor heat exchanger and a first indoor throttling device;
the first liquid side piping is connected with the first exhaust pipe, the first outdoor heat exchanger, the first indoor throttling device and the first indoor heat exchanger in sequence; a first gas-side piping connecting the first indoor heat exchanger and the first suction pipe;
a second refrigerant cycle system, the second refrigerant cycle system comprising:
a second indoor unit and a second outdoor unit, the second outdoor unit including a second compressor and a second outdoor heat exchanger, the second indoor unit including a second indoor heat exchanger and a second indoor throttling device;
a second exhaust pipe arranged at the discharge port of the second compressor, a suction pipe arranged at the suction port of the compressor, and a second liquid side piping sequentially connecting the second suction pipe, the second outdoor heat exchanger, the second indoor throttling device and the second indoor heat exchanger; a second gas-side pipe connecting the second indoor heat exchanger and the second exhaust pipe;
and the heat circulating device is used for transmitting the heat energy or the cold energy of the first indoor heat exchanger and the second indoor heat exchanger to the indoor space.
Optionally, the air conditioner includes an indoor cabinet, and the first indoor heat exchanger and the second indoor heat exchanger are disposed in the indoor cabinet.
Optionally, the indoor machine shell is provided with an air inlet, an air outlet, and an air duct communicating the air inlet and the air outlet;
the first indoor heat exchanger and the second indoor heat exchanger are arranged in the air duct;
the heat circulating device comprises a fan, and the fan is arranged in the air duct.
Optionally, the air conditioner includes an outdoor cabinet, and the first and second outdoor heat exchangers are disposed in the outdoor cabinet.
Optionally, the first outdoor heat exchanger and the second outdoor heat exchanger are integrally arranged, and the refrigerant pipes of the first outdoor heat exchanger and the second outdoor heat exchanger are arranged in the same fin group.
Optionally, the first outdoor heat exchanger includes a plurality of first refrigerant pipe sections; the second outdoor heat exchanger comprises a plurality of second refrigerant pipe sections;
the first refrigerant pipe sections and the second refrigerant pipe sections are alternately arranged.
Optionally, the first refrigerant circulation system further includes a first reversing device, and the first reversing device is disposed between the first exhaust pipe, the first liquid-side pipe, the first gas-side pipe, and the first suction pipe, so that the first exhaust pipe is communicated with the first liquid-side pipe, and the first suction pipe is communicated with the first gas-side pipe; alternatively, the first exhaust pipe communicates with the first gas-side pipe, and the first intake pipe communicates with the first liquid-side pipe.
Optionally, the first refrigerant circulation system further includes a first outdoor throttling device, and the first outdoor throttling device is disposed on the first liquid-side pipe; and/or the presence of a gas in the gas,
the second refrigerant circulating system further comprises a second outdoor throttling device, and the second outdoor throttling device is arranged on a second liquid side pipe.
Optionally, the first refrigerant circulation system further includes: a first connection pipe branched from the first gas-side pipe, and a second connection pipe branched from the first liquid-side pipe;
the first refrigerant circulating system further comprises a plurality of first indoor units, and the first indoor units are connected to the first connecting pipe and the second connecting pipe in parallel.
Optionally, the first refrigerant circulation system further includes a first gas-liquid separator, and the first gas-liquid separator is disposed on the first gas suction pipe; and/or the presence of a gas in the gas,
the second refrigerant circulating system also comprises a second gas-liquid separator, and the second gas-liquid separator is arranged on the second suction pipe.
Optionally, the second refrigerant circulation system further includes a second reversing device disposed between the second exhaust pipe, the second liquid-side piping, the second gas-side piping, and the second gas suction pipe, so that the second exhaust pipe is communicated with the second liquid-side piping, and the second gas suction pipe is communicated with the second gas-side piping; alternatively, the second exhaust pipe communicates with the second gas-side pipe, and the second intake pipe communicates with the second liquid-side pipe.
Optionally, the second refrigerant cycle system further includes: a third connection pipe branched from the second gas-side pipe, and a fourth connection pipe branched from the second liquid-side pipe;
the second refrigerant circulating system further includes a plurality of second indoor units connected in parallel to the third connecting pipe and the fourth connecting pipe.
Optionally, the air conditioner further comprises a water treatment device, wherein the water treatment device comprises a water heat exchanger and a water container, and the water heat exchanger is used for heating or refrigerating water in the water container;
the first refrigerant circulating system further includes: a first connection pipe branched from the first gas side pipe, and a second connection pipe branched from the first liquid side pipe, the water heat exchanger being connected to the first connection pipe and the second connection pipe in parallel with the first indoor unit; and/or the presence of a gas in the gas,
the second refrigerant circulation system further includes: and a water heat exchanger connected in parallel to the second indoor unit and the third and fourth connection pipes, wherein the water heat exchanger is connected in parallel to the second indoor unit.
Optionally, the air conditioner further comprises a heat exchange water tank and a ground heating water flow pipe communicated with the heat exchange water tank, and a ground heating heat exchanger is arranged in the heat exchange water tank;
the first refrigerant circulating system further includes: a first connection pipe branched from the first gas side pipe, and a second connection pipe branched from the first liquid side pipe, the floor heating heat exchanger being connected to the first connection pipe and the second connection pipe in parallel with the first indoor unit; and/or the presence of a gas in the gas,
the second refrigerant circulation system further includes: and a second connection pipe branched from the second liquid side pipe, wherein the floor heating heat exchanger and the second indoor unit are connected in parallel to the third connection pipe and the fourth connection pipe.
In the technical scheme of the utility model, the first indoor heat exchanger dehumidifies after the first compressor works, the second indoor heat exchanger provides heat energy after the second compressor works, the cold energy generated by the first indoor heat exchanger and the heat energy generated by the second indoor heat exchanger are conveyed to the indoor through the heat circulating device, and in the process of energy transfer, or after the energy is transmitted into the indoor, the indoor air can be effectively dried and the temperature can be raised by the heat energy; because first indoor heat exchanger and second indoor heat exchanger are in two refrigerant systems of mutually independent respectively for the consumption of first indoor heat exchanger and second indoor heat exchanger does not influence each other, can adjust the power of first compressor and second compressor respectively according to user's demand completely, realize the dehumidification reheat, heat the dehumidification even, so, not only can solve moist weather such as "return south sky" for the user, the adaptability of improvement air conditioner by a wide margin can also be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of the air conditioner of the present invention;
fig. 2 is a schematic structural diagram of an outdoor heat exchanger according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an embodiment of the air conditioner of the present invention in a normal cooling mode;
fig. 4 is a schematic structural view of another embodiment of the air conditioner of the present invention in a normal cooling mode;
fig. 5 is a schematic structural diagram of an embodiment of the air conditioner of the present invention in a forced cooling mode;
fig. 6 is a schematic structural view of another embodiment of the air conditioner of the present invention in the forced cooling mode;
fig. 7 is a schematic structural view of an embodiment of the air conditioner of the present invention in a normal heating mode;
fig. 8 is a schematic structural view of another embodiment of the air conditioner of the present invention in a normal heating mode;
fig. 9 is a schematic structural diagram of the air conditioner of the present invention in the next embodiment of the forced hot mode;
FIG. 10 is a schematic structural view of an embodiment of the air conditioner of the present invention in a heating and dehumidifying mode;
FIG. 11 is a schematic structural view of another embodiment of the air conditioner of the present invention in a heating and dehumidifying mode;
FIG. 12 is a schematic structural view of another embodiment of the air conditioner of the present invention in a heating and dehumidifying mode;
fig. 13 is a schematic structural view of an embodiment of the air conditioner of the present invention in a normal defrosting mode;
fig. 14 is a schematic structural view of another embodiment of the air conditioner of the present invention in a normal defrosting mode;
fig. 15 is a schematic structural view of the air conditioner of the present invention in a forced defrosting mode;
fig. 16 is a schematic structural view of another embodiment of the air conditioner in the forced defrosting mode according to the present invention;
fig. 17 is a schematic structural view of the air conditioner according to the embodiment of the present invention in the non-sensible defrosting mode;
fig. 18 is a schematic structural view of another embodiment of the air conditioner of the present invention in the non-sensible defrosting mode;
fig. 19 is a schematic structural diagram of another embodiment of the air conditioner of the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
The specific structure of the air conditioner will be mainly described below.
Referring to fig. 1 to 2, first, the entire piping structure and component arrangement of the air conditioner will be described; in an embodiment of the present invention, the air conditioner includes:
a first refrigerant cycle 100, the first refrigerant cycle 100 comprising:
a first indoor unit including a first compressor 110 and a first outdoor heat exchanger 140, and a first outdoor unit including a first indoor heat exchanger 150 and a first indoor throttling device;
a first exhaust pipe 111 provided at the discharge port of the first compressor 110, a suction pipe provided at the suction port of the compressor, and a first liquid side pipe 130 connecting the first exhaust pipe 111, the first outdoor heat exchanger 140, the first indoor throttle device, and the first indoor heat exchanger 150 in this order; a first gas-side pipe 160 connecting the first indoor heat exchanger 150 and the first suction pipe 170;
a second refrigerant cycle 200, the second refrigerant cycle 200 comprising:
a second indoor unit including a second compressor 210 and a second outdoor heat exchanger 240, and a second outdoor unit including a second indoor heat exchanger 250 and a second indoor throttling device;
a second discharge pipe 211 provided at a discharge port of the second compressor 210, a suction pipe provided at a suction port of the compressor, and a second liquid side pipe 230 connecting a second suction pipe 270, a second outdoor heat exchanger 240, a second indoor throttle device, and a second indoor heat exchanger 250 in this order; a second gas-side pipe 260 connecting the second indoor heat exchanger 250 and the second exhaust pipe 211;
a heat cycle device 300, wherein the heat cycle device 300 is used for sending the heat energy or cold energy of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 to the indoor.
Specifically, in the present embodiment, in the first refrigerant cycle system 100, the first indoor throttling device 133 may be a throttle valve, for example, an electronic expansion valve or an electric valve, the first indoor throttling device 133 may control the flow rate of the refrigerant flowing into or flowing out of the first indoor heat exchanger 150, and the opening degree of the first indoor throttling device 133 may be adjusted according to the cooling capacity or the heating capacity (user requirement) required to be released by the first indoor heat exchanger 150. The refrigerant flows out of the first compressor 110 through the first exhaust pipe 111, enters the first outdoor heat exchanger 140 to release heat, passes through the first indoor throttling device 133, enters the first indoor heat exchanger 150 to absorb heat, and flows back into the compressor through the first air-side piping 160 and the first suction pipe 170 after the refrigerant is evaporated.
In the second refrigerant cycle 200, the second indoor throttling device 233 may be a throttle valve, for example, an electronic expansion valve or an electric valve, the second indoor throttling device 233 may control a flow rate of the refrigerant flowing into or flowing out of the second indoor heat exchanger 250, and an opening degree of the second indoor throttling device 233 is adjusted according to a cooling capacity or a heating capacity (user demand) required to be released by the second indoor heat exchanger 250. The refrigerant flows out of the second compressor 210 through the second discharge pipe 211, flows into the second indoor heat exchanger 250 through the second gas-side pipe 260, releases heat in the second indoor heat exchanger 250, passes through the second indoor throttling device 233, enters the second outdoor heat exchanger 240 to absorb heat, evaporates, and flows back into the compressor through the second liquid-side pipe 230 and the second suction pipe 270.
The air conditioner includes two refrigerant circulation systems independent of each other, and the first indoor heat exchanger 150 performs cooling after the first compressor 110 operates, and the second indoor heat exchanger 250 performs heating after the second compressor 210 operates. Under the operation of the heat cycle device 300, the coldness of the first indoor heat exchanger 150 and the heat of the second indoor heat exchanger 250 are transmitted into the indoor. As the air flow passes through the first indoor heat exchanger 150, water vapor in the air is condensed, thereby reducing moisture in the air and improving the dryness of the air. The temperature of the air flow is increased under the action of heat. Thus, the dryness of the indoor air is improved, and the indoor air receives both heat energy and cold energy in terms of temperature. The air temperature can be adjusted according to the requirement, and if the indoor temperature needs to be increased in the dehumidification process, the working frequency of the second compressor 210 can be increased, so that the power of the second indoor heat exchanger 250 is increased, and the heat released by the second indoor heat exchanger 250 is larger than the cold released by the first heat exchanger; if only the temperature needs to be maintained during the dehumidification process, the amount of cold released by the first indoor heat exchanger 150 and the amount of heat released by the second indoor heat exchanger 250 may be set to be equivalent.
In this embodiment, after the first compressor 110 operates, the first indoor heat exchanger 150 dehumidifies, after the second compressor 210 operates, the second indoor heat exchanger 250 provides heat energy, and then the heat circulating device 300 transfers the cold energy generated by the first indoor heat exchanger 150 and the heat energy generated by the second indoor heat exchanger 250 to the indoor space, so that in the process of energy transfer, or after the energy is transferred to the indoor space, the indoor air can be effectively dried, and the temperature can be raised by the heat energy; because the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are respectively arranged in two refrigerant systems which are independent of each other, the power consumption of the first indoor heat exchanger 150 and the power consumption of the second indoor heat exchanger 250 are not affected by each other, the power of the first compressor 110 and the power of the second compressor 210 can be adjusted according to the requirements of users, dehumidification and reheating are achieved, even heating and dehumidification are achieved, and therefore, not only humid weather such as 'return to south' can be solved for the users, but also the adaptability of the air conditioner can be greatly improved.
It should be noted that the first indoor heat exchanger 150 and the second indoor heat exchanger 250 may have different sizes or the same size. When the two heat exchangers on the indoor side are of comparable size, the compressor specifications used in each system can be comparable. The compressor specification at this time can be 20% to 50% smaller than that of a compressor of a unit of the same load. That is, under the same load, the compressor at this time is only required to be 50% to 80%, which is much smaller than the compressor under the same load.
In some embodiments, in order to allow better mixing of the air passing through the first indoor heat exchanger 150 and the air passing through the second indoor heat exchanger 250, the air conditioner includes an indoor cabinet in which the first and second indoor heat exchangers 150 and 250 are disposed.
Specifically, in this embodiment, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are disposed in the same indoor housing, so that the cold energy and the heat energy generated by the first indoor heat exchanger 150 and the second indoor heat exchanger 250, respectively, can rapidly affect the heat-exchanged air. Meanwhile, the compactness of the structure is effectively improved, and the space is fully utilized. There are various ways for the heat energy or the cold energy to enter the room, and the heat energy or the cold energy may directly pass through the first indoor heat exchanger 150 and the second indoor heat exchanger 250 in sequence, or pass through the second indoor heat exchanger 250 and the first indoor heat exchanger 150 in sequence; or may be mixed after passing through the first indoor heat exchanger 150 and the second indoor heat exchanger 250, respectively. Of course, the liquid passing through the indoor heat exchanger can also be liquid, and the liquid transfers cold energy or heat energy to the air after exchanging heat with the indoor heat exchanger.
Take the example that the air directly exchanges heat with the indoor heat exchanger. The indoor machine shell is provided with an air inlet, an air outlet and an air channel communicated with the air inlet and the air outlet; the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are arranged in the air duct; the thermal cycling device 300 includes a fan disposed in the air duct. There are various arrangements of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 in the air duct, and the first indoor heat exchanger and the second indoor heat exchanger may be arranged in the width direction or the height direction of the air duct (up-down arrangement), or may be arranged in the extending direction of the air duct. For example, the first indoor heat exchanger 150 is disposed at a position close to the air inlet, and the second indoor heat exchanger 250 is disposed at a position close to the air outlet, so that the air flow is dehumidified by the first indoor heat exchanger 150, and then heated to return to the temperature by the second indoor heat exchange.
Of course, in some embodiments, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 may be respectively located in different housings, and the two heat-exchanged fluids (air or liquid) are mixed, or the fluids sequentially pass through the first indoor heat exchanger 150 and the second indoor heat exchanger 250.
In some embodiments, in order to simplify the manufacturing process of the first and second outdoor heat exchangers 140 and 240, the manufacturing efficiency is improved, and the heat exchange efficiency of the first and second outdoor heat exchangers 140 and 240 is improved.
The air conditioner includes an outdoor cabinet, and the first and second outdoor heat exchangers 140 and 240 are disposed in the outdoor cabinet. The first and second outdoor heat exchangers 140 and 240 are disposed adjacent to each other such that the first and second heat exchangers can exchange heat with each other. When only one of the outdoor heat exchangers works, the working heat exchanger can exchange heat through the other heat exchanger, so that the heat exchange efficiency of the outdoor heat exchanger is improved. When the operating states of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are opposite, for example, the first outdoor heat exchanger 140 releases heat, and the second outdoor heat exchanger 240 absorbs heat, at this time, the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 can further improve the respective heat exchange efficiency.
In some embodiments, to further improve the heat dissipation efficiency of the first and second outdoor heat exchangers 140 and 240. The first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are integrally disposed, and refrigerant pipes of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are disposed in the same fin group. That is, when the outdoor heat exchanger is manufactured, the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are manufactured as the same heat exchanger, and then a part of refrigerant pipes therein is divided into the first outdoor heat exchanger 140, and the other part of refrigerant pipes is divided into the second outdoor heat exchanger 240. The refrigerant pipes of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 share the fin group, so that the refrigerant pipes of the first outdoor heat exchanger 140 and the refrigerant pipes of the second outdoor heat exchanger 240 can exchange heat through all fins, and thus, the heat exchange area of the first refrigerant pipe of the first outdoor heat exchanger 140 and the heat exchange area of the second refrigerant pipe of the second outdoor heat exchanger 240 are greatly improved, and meanwhile, quick heat exchange can be carried out between the first refrigerant pipe and the second refrigerant pipe through the fins, so that the heat exchange efficiency of the first outdoor heat exchanger 140 and the heat exchange efficiency of the second outdoor heat exchanger 240 are greatly improved.
In some embodiments, to further improve the heat exchange efficiency of the first and second outdoor heat exchangers 140 and 240, the first outdoor heat exchanger 140 includes a plurality of first refrigerant pipe sections 141 arranged along the height direction of the first heat exchanger; the second outdoor heat exchanger 240 includes a plurality of second refrigerant pipe sections 241 arranged in the height direction of the first heat exchanger; the first refrigerant pipe sections 141 and the second refrigerant pipe sections 241 are alternately adjacent to each other in a height direction of the outdoor heat exchanger. In this embodiment, the plurality of first refrigerant pipe sections 141 are spliced to form the first refrigerant pipe, and the first refrigerant pipe sections 141 are arranged along one of the height direction, the length direction and the width direction of the first outdoor heat exchanger 140, for example, in the height direction. The first refrigerant pipe section 141 is disposed horizontally or vertically, for example, horizontally. Similarly, the plurality of second refrigerant pipe segments 241 are spliced to form a second refrigerant pipe, and the second refrigerant pipe segments 241 are arranged along one of the height direction, the length direction and the width direction of the second outdoor heat exchanger 240, for example, in the height direction. The second refrigerant pipe section 241 is disposed horizontally or vertically, for example, horizontally. The projections of the first refrigerant pipe segment 141 and the second refrigerant pipe segment 241 on the horizontal plane may be overlapped, and may also have a certain preset gap.
In some embodiments, in order to improve the adaptability of the air conditioner, not only dehumidification reheating, normal cooling and normal heating can be realized, but also forced cooling and forced heating can be realized, and sudden accidents can be responded.
In the present invention, the first refrigerant circulating system 100 further includes a first reversing device 120, the first reversing device 120 is disposed between the first exhaust pipe 111, the first liquid side piping 130, the first gas side piping 160 and the first suction pipe 170, so that the first exhaust pipe 111 is communicated with the first liquid side piping 130, and the first suction pipe 170 is communicated with the first gas side piping 160; alternatively, the first exhaust pipe 111 communicates with the first gas-side pipe 160, and the first intake pipe 170 communicates with the first liquid-side pipe 130.
The first direction changing device 120 may be a four-way valve or a mechanism capable of adjusting the flow direction of the refrigerant. When the first exhaust pipe 111 directly communicates with the first indoor heat exchanger 150 via the first gas-side pipe 160, the first indoor heat exchanger 150 heats; when the first exhaust pipe 111 is first communicated with the first outdoor heat exchanger 140 via the first liquid-side pipe 130 and then communicated with the first indoor heat exchanger 150, the first indoor heat exchanger 150 cools. Through the arrangement of the first reversing device 120, the cooling and heating states of the first indoor heat exchanger 150 can be freely switched, so that the first indoor heat exchanger can be fully matched with the second indoor heat exchanger 250, and the functions of forced heating and the like are realized.
In the present invention, the second refrigerant circulating system 200 further includes a second reversing device 220, the second reversing device 220 is disposed between the second exhaust pipe 211, the second liquid side piping 230, the second gas side piping 260 and the second air suction pipe 270, so that the second exhaust pipe 211 is communicated with the second liquid side piping 230, and the second air suction pipe 270 is communicated with the second gas side piping 260; alternatively, the second exhaust pipe 211 communicates with the second gas-side pipe 260, and the second intake pipe 270 communicates with the second liquid-side pipe 230.
The second direction changing device 220 may be a four-way valve or a mechanism capable of adjusting the flow direction of the refrigerant. When the second exhaust pipe 211 directly communicates with the second indoor heat exchanger 250 through the second gas-side piping 260, the second indoor heat exchanger 250 generates heat; when the second discharge pipe 211 is first communicated with the second outdoor heat exchanger 240 through the second liquid-side pipe 230 and then communicated with the second indoor heat exchanger 250, the second indoor heat exchanger 250 cools. Through the arrangement of the second reversing device 220, the cooling and heating states of the second indoor heat exchanger 250 can be freely switched, so that the second indoor heat exchanger can be fully matched with the first indoor heat exchanger 150, and the functions of forced cooling and the like are realized.
When the first direction changing device 120 and the second direction changing device 220 are simultaneously disposed, the first refrigerant circulating system 100 and the second refrigerant circulating system 200 are two independent multi-functional air conditioning systems, and can perform cooling and heating respectively. When one system fails and can not work, the other system can be used as a standby system to start working immediately to replace the failed system for operation. Therefore, the dual-system air conditioner has a backup function, and the reliability of service provided by the air conditioner can be greatly improved. Meanwhile, more temperature requirement choices such as forced cooling, forced heating and the like are provided for users.
In some embodiments, the first refrigerant cycle 100 and the second refrigerant cycle 200 may be adjusted to improve the stability and performance of the first refrigerant cycle.
The first refrigerant circulation system 100 further includes a first outdoor throttling device 131, and the first outdoor throttling device 131 is disposed on the first liquid-side pipe 130; and/or, the second refrigerant cycle 200 further includes a second outdoor throttling device 231, and the second outdoor throttling device 231 is disposed on the second liquid-side pipe 230.
In order to better regulate the pressure and temperature of the refrigerant in the entire first refrigerant cycle system 100, the first refrigerant cycle system 100 further includes a first outdoor throttling device 131, and the first outdoor throttling device 131 is located on the first liquid side pipe 130 between the first outdoor heat exchanger 140 and the first indoor heat exchanger 150. The first outdoor throttling device 131 may include only the first outdoor electronic expansion valve, and in some embodiments, may further include a first shut-off valve. The first outdoor electronic expansion valve and the first shutoff valve are provided in this order in the first liquid-side pipe 130.
Similarly, in order to better regulate the pressure and temperature of the refrigerant in the entire second refrigerant circulation system 200, the second refrigerant circulation system 200 further includes a second outdoor throttling device 231, and the second outdoor throttling device 231 is located on the second liquid-side pipe 230 between the second outdoor heat exchanger 240 and the second indoor heat exchanger 250. The second outdoor throttling device 231 may include only a second outdoor electronic expansion valve, and in some embodiments, may further include a second shutoff valve 161. The second outdoor electronic expansion valve and the second shutoff valve 161 are provided in this order in the second liquid-side pipe 230.
In some embodiments, in order to better adjust the operation of the refrigerant in the refrigerant circulation system, a third stop valve 232 and a fourth stop valve 261 are further disposed on the first gas side pipe 160 and the second gas side pipe 260, respectively.
In some embodiments, in order to ensure stable operation of the first compressor 110 and the second compression, the first refrigerant circulation system 100 further includes a first gas-liquid separator 171, and the first gas-liquid separator 171 is disposed on the first suction pipe 170; and/or, the second refrigerant cycle system 200 further includes a second gas-liquid separator 271, and the second gas-liquid separator 271 is disposed on the second suction pipe 270. The first suction pipe 170 is provided with a first gas-liquid separator 171, and the second suction pipe 270 is provided with a second gas-liquid separator 271. After the refrigerant enters the gas-liquid separator, the liquid refrigerant is left in the gas-liquid separator, and the gaseous refrigerant flows back to the compressor for compression. Therefore, the liquid refrigerant is prevented from entering the compressor, so that liquid impact on the compressor in the compression process is avoided, and the service life and the working stability of the compressor are favorably improved.
In some embodiments, the first refrigerant cycle system 100 further includes a plurality of first indoor units, and each of the first indoor units may include different heat exchangers, such as a common cooling/heating indoor unit, and an indoor unit with a switching device capable of freely switching cooling or heating states. Thus, the first refrigerant cycle 100 can simultaneously perform mixed operations of cooling, heating, and the like on different indoor units.
Specifically, the first refrigerant cycle system 100 further includes: a first connection pipe branched from the first gas side pipe 160, and a second connection pipe 162 branched from the first liquid side pipe 130; the first refrigerant cycle system 100 further includes a plurality of first indoor units connected in parallel to the first connection pipe and the second connection pipe 162. Thus, the plurality of first indoor units in the first refrigerant cycle system 100 are connected in parallel, so that the first refrigerant cycle system 100 can provide heat energy or cold energy to a plurality of rooms simultaneously.
Similarly, in some embodiments, the second refrigerant circulation system 200 further includes a plurality of second indoor units, and the heat exchangers included in the second indoor units may be different in form, such as a common cooling/heating indoor unit, or an indoor unit with a switching device capable of freely switching cooling or heating states. Thus, the second refrigerant circulation system 200 can simultaneously perform the mixed operation of cooling, heating, and the like on different indoor units.
Specifically, the second refrigerant cycle system 200 further includes: a third connection pipe 234 branched from the second gas side pipe 260, and a fourth connection pipe 262 branched from the second liquid side pipe 230; the second refrigerant cycle system 200 further includes a plurality of second indoor units connected in parallel to the third connection pipe 234 and the fourth connection pipe 262.
It should be noted that all the first indoor units include the first indoor heat exchangers 150 and first indoor throttling devices, the first indoor throttling devices control the operating states of the first indoor heat exchangers 150, and when one of the first indoor throttling devices is completely closed, the corresponding first indoor heat exchanger 150 stops operating. Similarly, each second indoor throttling device controls the working state of the second indoor heat exchanger 250, and when a certain second indoor throttling device is completely closed, the corresponding second indoor heat exchanger 250 stops working. Therefore, each first indoor unit and each second indoor unit can be controlled independently, different working modes of different rooms can be realized, and personalized services are provided for users.
In some embodiments, the air conditioner may also be used to prepare hot or cold water, the air conditioner further comprising a water treatment device comprising a water heat exchanger and a water container, the water heat exchanger being used to heat or refrigerate water in the water container;
the first refrigerant cycle system 100 further includes: a first connection pipe branched from the first gas side pipe 160, and a second connection pipe 162 branched from the first liquid side pipe 130, the water heat exchanger being connected to the first connection pipe and the second connection pipe 162 in parallel with the first indoor unit; and/or the presence of a gas in the gas,
the second refrigerant cycle 200 further includes: a third connection pipe 234 branched from the second gas side pipe 260, and a fourth connection pipe 262 branched from the second liquid side pipe 230, and the water heat exchanger and the second indoor unit are connected in parallel to the third connection pipe 234 and the fourth connection pipe 262.
The water heat exchanger may be connected to the first refrigerant circulation system 100 or the second refrigerant circulation system 200. When there are a plurality of water heat exchangers, part of the water heat exchangers are disposed in the first refrigerant circulation system 100, and the other part of the water heat exchangers are disposed in the second refrigerant circulation system 200. Of course, there may be a plurality of water containers, and thus, it is possible to realize that one water container holds hot water and the other water container holds cold water, so that cold water and hot water can be supplied simultaneously. When hot water is required to be produced, high-temperature refrigerants pass through the water heat exchanger, so that heat energy is transferred to water in the container; when the refrigeration water is needed, the low-temperature refrigerant passes through the water heat exchanger, so that the cold energy is transferred to the water in the container.
In some embodiments, the air conditioner is also used to supply water to floor heating.
The air conditioner also comprises a heat exchange water tank and a ground heating water flow pipe communicated with the heat exchange water tank, wherein a ground heating heat exchanger is arranged in the heat exchange water tank;
the first refrigerant cycle system 100 further includes: a first connection pipe branched from the first air side pipe 160, and a second connection pipe 162 branched from the first liquid side pipe 130, the floor heating heat exchanger being connected to the first connection pipe and the second connection pipe 162 in parallel with the first indoor unit; and/or the presence of a gas in the gas,
the second refrigerant cycle 200 further includes: a third connection pipe 234 branched from the second air side pipe 260, and a fourth connection pipe 262 branched from the second liquid side pipe 230, and the floor heating heat exchanger and the second indoor unit are connected in parallel to the third connection pipe 234 and the fourth connection pipe 262.
The floor heating heat exchanger may be disposed in the first refrigerant circulation system 100 or the second refrigerant circulation system 200, and of course, may be disposed in both the first refrigerant circulation system 100 and the second refrigerant circulation system 200. Specifically, in this embodiment, ground heating water pipe can bury underground in the middle of ground or the wall, ground heating water pipe and heat exchange water tank intercommunication, and water among the heat exchange water tank can be at ground heating water pipe mesocycle for the temperature in the ground heating water pipe is equivalent with the temperature in the heat exchange water tank. When a high-temperature and high-pressure refrigerant passes through the floor heating heat exchanger, the floor heating heat exchanger exchanges heat with water in a heat exchange water tank to heat cold water in the water tank; when low-pressure refrigerant passes through the floor heating heat exchanger, the floor heating heat exchanger exchanges heat with water in the heat exchange water tank to cool the water in the heat exchange water tank.
In some embodiments, the air conditioner can improve the heating effect of the air conditioner and eliminate abnormal sound during cooling. The first refrigerant circulating system and the second refrigerant circulating system are also respectively provided with a first economizer and a second economizer. The specific contents are as follows:
the first refrigerant circulating system also comprises a first gas-liquid separator and a first economizer, and the first gas-liquid separator is arranged on the first air suction pipe; the first economizer is arranged on a first liquid side piping between the first outdoor heat exchanger and the first indoor throttling device, and a first return pipe of the first economizer is communicated with the first gas-liquid separator.
When the air conditioner refrigerates, the refrigerant firstly passes through the first outdoor heat exchanger and then is further condensed and exchanged by the first economizer, the gas-liquid two-phase refrigerant is changed into a pure liquid refrigerant, and the pure liquid refrigerant flows indoors and enters the first indoor heat exchanger for heat absorption and evaporation after passing through the first throttling valve. The refrigerant entering the first throttling regulating valve is changed into pure liquid from gas-liquid two-phase state, so that the problem of abnormal sound of the refrigerant generated when the gas-liquid two-phase refrigerant passes through the throttling device is solved.
The first compressor is an enthalpy-increasing compressor, and the first return pipe comprises a first return pipe body, a first communicating pipe and a second communicating pipe which are respectively communicated with the first return pipe body; one end of the first communicating pipe, which is far away from the first return pipe body, is communicated with the first gas-liquid separator; and one end of the second communicating pipe, which is far away from the first return pipe body, is communicated with a medium-pressure return air port of the first compressor.
The refrigerant is throttled and depressurized by the liquid taking throttle valve, enters the first economizer through the liquid taking pipe to absorb heat and evaporate, evaporated medium-pressure saturated steam enters the medium-pressure air suction port of the first compressor through the first return pipe and the second connecting pipe, and is compressed together with the refrigerant of the low-pressure air suction port of the first compressor after being mixed, so that the problems of small refrigerant flow, low return air pressure, high compression ratio and the like in a low-temperature environment are solved, and the reliability of a low-temperature heating capacity and a system is improved. Through the utility model discloses a technique, when outdoor ambient temperature is low temperature, through the system design of first air injection enthalpy-increasing compressor and first economic ware, increases the refrigerant air suction volume under the first compressor low temperature environment, and then improves the low temperature heating volume, reduces the compression ratio under the low temperature environment simultaneously, can improve the reliability of system.
And a first control valve is arranged on the first communication pipe or the first return pipe. A second control valve is arranged on the second communicating pipe. When the first return pipe is only communicated with the gas-liquid separator, the first control valve is arranged on the first return pipe to control the on-off of the first return pipe. When the first return pipe is communicated with the first gas-liquid separator through the first communicating pipe and the second communicating pipe is communicated with the first compressor, the first control valve is arranged on the first communicating pipe. In some embodiments, in order to ensure a reliable flow of the refrigerant, a second control valve is provided on the second communication pipe.
The second refrigerant circulating system also comprises a second gas-liquid separator and a second economizer, and the second gas-liquid separator is arranged on the second suction pipe; the second economizer is arranged on a second liquid side pipe between the second outdoor heat exchanger and the second indoor throttling device, and a second return pipe of the second economizer is communicated with the second gas-liquid separator.
When the air conditioner refrigerates, the refrigerant firstly passes through the first outdoor heat exchanger and then is further condensed and exchanged by the first economizer, the gas-liquid two-phase refrigerant is changed into a pure liquid refrigerant, and the pure liquid refrigerant flows indoors and enters the second indoor heat exchanger for heat absorption and evaporation after passing through the second throttling valve. The refrigerant entering the second throttling regulating valve is changed into pure liquid from gas-liquid two-phase state, so that the problem of abnormal sound of the refrigerant generated when the gas-liquid two-phase refrigerant passes through the throttling device is solved.
The second compressor is an enthalpy-increasing compressor, and the second return pipe comprises a second return pipe body, and a third communicating pipe and a fourth communicating pipe which are respectively communicated with the second return pipe body; one end of the third communicating pipe, which is far away from the second return pipe body, is communicated with the second gas-liquid separator; and one end of the fourth communicating pipe, which is far away from the second return pipe body, is communicated with a medium-pressure return air port of the second compressor.
The refrigerant is throttled and depressurized by the liquid taking throttle valve, then enters the second economizer through the liquid taking pipe to absorb heat and evaporate, the evaporated medium-pressure saturated steam enters the medium-pressure air suction port of the second compressor through the second return pipe and the fourth connecting pipe, and is compressed together with the refrigerant of the low-pressure air suction port of the second compressor, so that the problems of small refrigerant flow, low return air pressure, high compression ratio and the like in a low-temperature environment are solved, and the reliability of a low-temperature heating quantity and a system is improved. Through the utility model discloses a technique, when outdoor ambient temperature is low temperature, through the system design of second air injection enthalpy-increasing compressor and second economic ware, increases the refrigerant air suction volume under the second compressor low temperature environment, and then improves the low temperature heating capacity, reduces the compression ratio under the low temperature environment simultaneously, can improve the reliability of system.
And a third control valve is arranged on the third communicating pipe. And a fourth control valve is arranged on the fourth communicating pipe. When the second return pipe is only communicated with the gas-liquid separator, the third control valve is arranged on the second return pipe and controls the on-off of the third return pipe. When the second return pipe is communicated with the second gas-liquid separator through the third communicating pipe and the fourth communicating pipe is communicated with the second compressor, the third control valve is arranged on the third communicating pipe. In some embodiments, in order to ensure a reliable flow of the refrigerant, a fourth control valve is provided on the fourth communication pipe.
In some embodiments, to improve the performance of the air conditioner, the first compressor is an enthalpy-increasing compressor, the first compressor having a medium pressure suction port; a first outdoor throttling device is arranged on the first liquid side pipe; an economizer 500 or a flash evaporator 600 is arranged on a first liquid side pipe between the first outdoor throttling device and the first outdoor heat exchanger; and/or the presence of a gas in the gas,
the second compressor is an enthalpy-increasing compressor and is provided with a medium-pressure suction inlet; a second outdoor throttling device is arranged on the second liquid side pipe; an economizer 500 or a flash evaporator 600 is provided in the second liquid-side piping between the second outdoor expansion device and the second outdoor heat exchanger.
That is, the economizer 500 may be provided in the first liquid-side pipe, or the flash evaporator 600 may be provided; the economizer 500 may be provided in the second liquid-side pipe, or a flash evaporator 600 may be provided. More specifically, the economizer in the first refrigerant circulating system can be a first economizer, and the flash evaporator can be a first flash evaporator; the economizer in the second refrigerant cycle system may be a second economizer, and the flash evaporator may be a second flash evaporator.
By the arrangement of the economizer 500 and the flash evaporator 600, the gaseous refrigerant can flow back to the compressor through the medium-pressure suction inlet of the compressor, so that the capacity of the compressor is increased.
A first refrigerant flow path 540 and a second refrigerant flow path 550 are arranged in the economizer 500, and two ends of the first refrigerant flow path 540 are respectively communicated with liquid side distribution pipes at two ends of the economizer 500; one end of the second refrigerant channel 550 is connected to the liquid side pipe through the liquid taking pipe 520, and the other end is connected to the middle pressure suction port of the compressor through the return pipe 530; a liquid taking throttle valve 510 is arranged on the liquid taking pipe 520; the inflow end of the liquid taking pipe 520 is communicated with a liquid side pipe between the economizer 500 and an outdoor side heat exchanger, or the inflow end of the liquid taking pipe 520 is communicated with a liquid side pipe between the economizer 500 and an outdoor throttling device; the return line 530 of the economizer 500 communicates with the medium pressure suction port of the compressor.
The economizer 500 has a throttling function, a first refrigerant flow path 540 and a second refrigerant flow path 550 are arranged in the economizer 500, and two ends of the first refrigerant flow path 540 are respectively communicated with liquid side distribution pipes at two ends of the economizer 500; one end of the second refrigerant channel 550 is connected to the liquid side pipe through the liquid taking pipe 520, and the other end is connected to the middle pressure suction port of the compressor through the return pipe 530; a liquid-taking throttle valve 510 is provided on the liquid-taking pipe 520. One end of the first refrigerant fluid is communicated with a refrigerant inlet of the economizer 500, and the other end is communicated with a refrigerant outlet of the economizer 500. The liquid intake pipe 520 has one end communicating with the liquid side pipe and the other end communicating with the second refrigerant passage 550, and the return pipe 530 has one end communicating with the medium pressure suction port of the compressor and the other end communicating with the second refrigerant passage 550. A control valve may be provided in return line 530 to control the opening and closing of return line 530.
Wherein the flash evaporator 600 includes: a barrel 610, the barrel 610 having a flash chamber 620; a first liquid-phase refrigerant pipeline 630, wherein the first liquid-phase refrigerant pipeline 630 is fixed at the first end of the cylinder 610 and is communicated with the flash evaporation cavity 620 through a first liquid inlet and outlet; a second liquid-phase refrigerant pipeline 640, wherein the second liquid-phase refrigerant pipeline 640 is fixed at a second end of the cylinder 610 opposite to the first end thereof and is communicated with the flash evaporation cavity 620 through a second liquid inlet and outlet; and a gas-phase refrigerant pipeline 650, wherein the gas-phase refrigerant pipeline 650 is fixed at the first end of the cylinder 610 and is communicated with the flash chamber 620 through the gas outlet. The other end of the first liquid-phase refrigerant pipeline 630 is communicated with the first outdoor unit, the other end of the second liquid-phase refrigerant pipeline is communicated with the first outdoor throttling device, and the other end of the gas-phase refrigerant pipeline is communicated with the medium-pressure suction inlet of the compressor. A control valve may be disposed on the gas-phase refrigerant pipeline to control the on/off of the gas-phase refrigerant pipeline 650.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (20)
1. An air conditioner, comprising:
a first refrigerant cycle system, the first refrigerant cycle system comprising:
the outdoor unit comprises a first compressor and a first outdoor heat exchanger, and the first indoor unit comprises a first indoor heat exchanger and a first indoor throttling device;
the first liquid side piping is connected with the first exhaust pipe, the first outdoor heat exchanger, the first indoor throttling device and the first indoor heat exchanger in sequence; a first gas-side piping connecting the first indoor heat exchanger and the first suction pipe;
a second refrigerant cycle system, the second refrigerant cycle system comprising:
a second indoor unit and a second outdoor unit, the second outdoor unit including a second compressor and a second outdoor heat exchanger, the second indoor unit including a second indoor heat exchanger and a second indoor throttling device;
a second exhaust pipe arranged at the discharge port of the second compressor, a second suction pipe arranged at the suction port of the compressor, and a second liquid side piping sequentially connecting the second suction pipe, the second outdoor heat exchanger, the second indoor throttling device and the second indoor heat exchanger; a second gas-side pipe connecting the second indoor heat exchanger and the second exhaust pipe;
and the heat circulating device is used for transmitting the heat energy or the cold energy of the first indoor heat exchanger and the second indoor heat exchanger to the indoor space.
2. The air conditioner of claim 1, wherein the air conditioner includes an indoor cabinet, and the first indoor heat exchanger and the second indoor heat exchanger are disposed in the indoor cabinet.
3. The air conditioner according to claim 2, wherein the indoor cabinet has an air inlet, an air outlet, and an air duct communicating the air inlet and the air outlet;
the first indoor heat exchanger and the second indoor heat exchanger are arranged in the air duct;
the heat circulating device comprises a fan, and the fan is arranged in the air duct.
4. The air conditioner of claim 1, wherein the air conditioner includes an outdoor cabinet, and the first and second outdoor heat exchangers are disposed in the outdoor cabinet.
5. The air conditioner as claimed in claim 1, wherein the first outdoor heat exchanger and the second outdoor heat exchanger are integrally provided, and refrigerant pipes of the first outdoor heat exchanger and the second outdoor heat exchanger are provided in the same heat exchanger group.
6. The air conditioner as claimed in claim 5, wherein the first outdoor heat exchanger includes a plurality of first refrigerant pipe sections; the second outdoor heat exchanger comprises a plurality of second refrigerant pipe sections;
the first refrigerant pipe sections and the second refrigerant pipe sections are alternately arranged.
7. The air conditioner as claimed in claim 1, wherein the first refrigerant circulating system further includes a first direction changing device provided between the first exhaust pipe, the first liquid side pipe, the first gas side pipe, and the first suction pipe to communicate the first exhaust pipe with the first liquid side pipe and the first suction pipe with the first gas side pipe; alternatively, the first exhaust pipe communicates with the first gas-side pipe, and the first intake pipe communicates with the first liquid-side pipe.
8. The air conditioner as claimed in claim 1, wherein the first refrigerant circulation system further includes a first outdoor throttling device provided on the first liquid side pipe; and/or the presence of a gas in the gas,
the second refrigerant circulating system further comprises a second outdoor throttling device, and the second outdoor throttling device is arranged on the first liquid side distribution pipe.
9. The air conditioner according to claim 1,
the first refrigerant circulating system further includes: a first connection pipe branched from the first gas-side pipe, and a second connection pipe branched from the first liquid-side pipe;
the first refrigerant circulating system further comprises a plurality of first indoor units, and the first indoor units are connected to the first connecting pipe and the second connecting pipe in parallel.
10. The air conditioner as claimed in claim 1, wherein the first refrigerant circulating system further comprises a first gas-liquid separator disposed on the first suction pipe; and/or the presence of a gas in the gas,
the second refrigerant circulating system also comprises a second gas-liquid separator, and the second gas-liquid separator is arranged on the second suction pipe.
11. The air conditioner as claimed in claim 1, wherein the second refrigerant circulation system further includes a second direction changing device provided between the second discharge pipe, the second liquid side piping, the second gas side piping, and the second suction pipe to communicate the second discharge pipe with the second liquid side piping and the second suction pipe with the second gas side piping; alternatively, the second exhaust pipe communicates with the second gas-side pipe, and the second intake pipe communicates with the second liquid-side pipe.
12. The air conditioner according to claim 1,
the second refrigerant circulation system further includes: a third connection pipe branched from the second gas-side pipe, and a fourth connection pipe branched from the second liquid-side pipe;
the second refrigerant circulating system further includes a plurality of second indoor units connected in parallel to the third connecting pipe and the fourth connecting pipe.
13. The air conditioner according to claim 1, further comprising a water treatment device including a water heat exchanger and a water container, the water heat exchanger being for heating or cooling water in the water container;
the first refrigerant circulating system further includes: a first connection pipe branched from the first gas side pipe, and a second connection pipe branched from the first liquid side pipe, the water heat exchanger being connected to the first connection pipe and the second connection pipe in parallel with the first indoor unit; and/or the presence of a gas in the gas,
the second refrigerant circulation system further includes: and a water heat exchanger connected in parallel to the second indoor unit and the third and fourth connection pipes, wherein the water heat exchanger is connected in parallel to the second indoor unit.
14. The air conditioner according to claim 1, further comprising a heat exchange water tank and a ground heating water flow pipe communicated with the heat exchange water tank, wherein a ground heating heat exchanger is arranged in the heat exchange water tank;
the first refrigerant circulating system further includes: a first connection pipe branched from the first gas side pipe, and a second connection pipe branched from the first liquid side pipe, the floor heating heat exchanger being connected to the first connection pipe and the second connection pipe in parallel with the first indoor unit; and/or the presence of a gas in the gas,
the second refrigerant circulation system further includes: and a second connection pipe branched from the second liquid side pipe, wherein the floor heating heat exchanger and the second indoor unit are connected in parallel to the third connection pipe and the fourth connection pipe.
15. The air conditioner as claimed in claim 1, wherein the first refrigerant circulating system further includes a first gas-liquid separator and a first economizer, the first gas-liquid separator being disposed on the first suction pipe; the first economizer is arranged on a first liquid side piping between the first outdoor heat exchanger and the first indoor throttling device, and a first return pipe of the first economizer is communicated with the first gas-liquid separator; and/or the presence of a gas in the gas,
the second refrigerant circulating system also comprises a second gas-liquid separator and a second economizer, and the second gas-liquid separator is arranged on the second suction pipe; the second economizer is arranged on a second liquid side pipe between the second outdoor heat exchanger and the second indoor throttling device, and a second return pipe of the second economizer is communicated with the second gas-liquid separator.
16. The air conditioner as claimed in claim 15, wherein the first compressor is an enthalpy-increasing compressor, the first return pipe includes a first return pipe body, and a first communicating pipe and a second communicating pipe respectively communicating with the first return pipe body;
one end of the first communicating pipe, which is far away from the first return pipe body, is communicated with the first gas-liquid separator;
one end of the second communicating pipe, which is far away from the first return pipe body, is communicated with a medium-pressure return port of the first compressor;
and/or the presence of a gas in the gas,
the second compressor is an enthalpy-increasing compressor, and the second return pipe comprises a second return pipe body, and a third communicating pipe and a fourth communicating pipe which are respectively communicated with the second return pipe body;
one end of the third communicating pipe, which is far away from the second return pipe body, is communicated with the second gas-liquid separator;
and one end of the fourth communicating pipe, which is far away from the second return pipe body, is communicated with a medium-pressure return air port of the second compressor.
17. The air conditioner as claimed in claim 16, wherein a first control valve is provided on the first connection pipe or the first return pipe; and/or a third control valve is arranged on the third communicating pipe or the second return pipe.
18. The air conditioner according to claim 16, wherein a second control valve is provided on the second communication pipe; and/or a fourth control valve is arranged on the fourth communicating pipe.
19. The air conditioner of claim 1, wherein said first compressor is an enthalpy increasing compressor, said first compressor having a medium pressure suction port; a first outdoor throttling device is arranged on the first liquid side pipe; an economizer or a flash evaporator is arranged on a first liquid side pipe between the first outdoor throttling device and the first outdoor heat exchanger; and/or the presence of a gas in the gas,
the second compressor is an enthalpy-increasing compressor and is provided with a medium-pressure suction inlet; a second outdoor throttling device is arranged on the second liquid side pipe; an economizer or a flash evaporator is arranged on a second liquid side pipe between the second outdoor throttling device and the second outdoor heat exchanger.
20. The air conditioner as claimed in claim 19, wherein a first refrigerant flow path and a second refrigerant flow path are provided in the economizer, and both ends of the first refrigerant flow path are respectively communicated with liquid side piping at both ends of the economizer; one end of the second refrigerant flow path is communicated with the liquid side pipe through a liquid taking pipe, and the other end of the second refrigerant flow path is communicated with a medium-pressure suction inlet of the compressor through a return pipe; a liquid taking throttle valve is arranged on the liquid taking pipe;
the inflow end of the liquid taking pipe is communicated with a liquid side pipe between the economizer and the outdoor heat exchanger, or the inflow end of the liquid taking pipe is communicated with a liquid side pipe between the economizer and the outdoor throttling device;
the return line of the economizer communicates with the medium pressure suction inlet of the compressor.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921515639.8U CN210832213U (en) | 2019-09-11 | 2019-09-11 | Air conditioner |
| US17/641,654 US20220307745A1 (en) | 2019-09-11 | 2020-03-13 | Air conditioner and control method therefor |
| EP20863438.6A EP4012276A4 (en) | 2019-09-11 | 2020-03-13 | Air conditioner and control method therefor |
| PCT/CN2020/079230 WO2021047158A1 (en) | 2019-09-11 | 2020-03-13 | Air conditioner and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921515639.8U CN210832213U (en) | 2019-09-11 | 2019-09-11 | Air conditioner |
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| CN210832213U true CN210832213U (en) | 2020-06-23 |
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| CN201921515639.8U Active CN210832213U (en) | 2019-09-11 | 2019-09-11 | Air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577101A (en) * | 2019-09-11 | 2021-03-30 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN115264681A (en) * | 2022-07-05 | 2022-11-01 | 曼茨环境技术有限公司 | High-efficiency variable-frequency triple-generation air conditioning system |
-
2019
- 2019-09-11 CN CN201921515639.8U patent/CN210832213U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577101A (en) * | 2019-09-11 | 2021-03-30 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN112577101B (en) * | 2019-09-11 | 2024-06-25 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN115264681A (en) * | 2022-07-05 | 2022-11-01 | 曼茨环境技术有限公司 | High-efficiency variable-frequency triple-generation air conditioning system |
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