CN113357854A - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN113357854A CN113357854A CN202110657228.8A CN202110657228A CN113357854A CN 113357854 A CN113357854 A CN 113357854A CN 202110657228 A CN202110657228 A CN 202110657228A CN 113357854 A CN113357854 A CN 113357854A
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- branch
- storage tank
- pressure
- liquid storage
- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of air conditioning systems, in particular to an air conditioning system, which aims to solve the problem that the use of the air conditioning system is limited due to larger power consumption when the conventional air conditioning system is in normal operation and comprises the following steps: the system comprises a main working branch, a storage branch, an indoor heat exchanger and a control unit; the main working branch and the reserve branch are arranged in parallel, and outlets of the main working branch and the reserve branch are connected to the indoor heat exchanger; the reserve branch includes: the liquid storage tank is used for containing high-pressure liquid gas, and the control valve is used for connecting or disconnecting the liquid storage tank and the indoor heat exchanger; the control unit is used for triggering the control valve of the storage branch to conduct the liquid storage tank and the indoor heat exchanger when the control unit is in the electricity utilization peak period at present, so that the liquid storage tank provides high-pressure liquid gas for the indoor heat exchanger to refrigerate.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioning system.
Background
An air conditioning system is a system for manually adjusting and controlling parameters such as temperature, humidity, and flow rate of ambient air in a building or structure.
In the related art, the cooling function of the air conditioning system is usually achieved by evaporating the refrigerant by absorbing heat from the air in the building or structure. For example, a compressor of an air conditioning system compresses a gaseous refrigerant into a high-temperature high-pressure gaseous state, and sends the gaseous refrigerant to a condenser for cooling, the high-temperature high-pressure gaseous refrigerant is cooled and then becomes a medium-temperature high-pressure liquid refrigerant, the medium-temperature high-pressure liquid refrigerant is throttled and reduced by a throttling device and becomes a low-temperature low-pressure gas-liquid mixture, and the low-temperature low-pressure gas-liquid mixture absorbs heat in air by an evaporator and is vaporized into a gaseous state, so that the refrigeration effect is achieved.
However, because the air conditioning system in the related art consumes more power during normal operation, during the peak period of power consumption, the power consumption of the user is often over-limited or the user is powered off, so that the use of the air conditioning system is limited.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the use of the air conditioning system is limited due to large power consumption when the conventional air conditioning system is in normal operation, the present invention provides an air conditioning system, including: the system comprises a main working branch, a storage branch, an indoor heat exchanger and a control unit; the main working branch and the reserve branch are arranged in parallel, and outlets of the main working branch and the reserve branch are connected to the indoor heat exchanger; the reserve branch includes: the liquid storage tank is used for containing high-pressure liquid gas, and the control valve is used for connecting or disconnecting the liquid storage tank and the indoor heat exchanger; the control unit is used for triggering the control valve of the storage branch to conduct the liquid storage tank and the indoor heat exchanger when the control unit is in the electricity utilization peak period at present, so that the liquid storage tank provides high-pressure liquid gas for the indoor heat exchanger to refrigerate.
In one possible embodiment, the high pressure liquid gas comprises carbon dioxide and/or nitrogen in a high pressure liquid state.
In a possible embodiment, the air conditioning system further comprises a mounting base provided with a docking port, and the docking end of the liquid storage tank is detachably connected with the docking port.
In a possible embodiment, a seal is provided between the abutting end of the reservoir and the abutting interface of the mounting.
In one possible embodiment, the storage branch has a plurality of storage branches, which are arranged in parallel.
In a possible embodiment, the control unit is further configured to trigger the main working branch to perform refrigeration when the high-pressure liquid gas in the reserve branch is completely released.
In one possible embodiment, the reserve branch further comprises: a pressure detection piece mounted to the liquid storage tank, the pressure detection piece being electrically connected with the control unit; the pressure detection piece is used for detecting the actual pressure value of the liquid storage tank connected with the pressure detection piece; the control unit is used for triggering other storage branches in the plurality of storage branches to provide high-pressure liquid gas or determining that the high-pressure liquid gas stored in each storage branch is completely released when the actual pressure value in the corresponding liquid storage tank is determined to be reduced to the lower pressure limit value according to the detection result of the pressure detection piece.
In one possible embodiment, the reserve branch further comprises: the pressure relay is used for triggering a first electric stop valve connected to the liquid storage tank to close to disconnect the corresponding liquid storage tank from the indoor heat exchanger when the actual pressure value in the corresponding liquid storage tank is reduced to a lower pressure limit value, and is also used for triggering other storage branches in the plurality of storage branches to provide high-pressure liquid gas or triggering a control unit to determine that the high-pressure liquid gas stored in each storage branch is completely released.
In one possible embodiment, the air conditioning system further comprises: and the instrument is electrically connected with the pressure sensor or the control unit and is used for displaying the current actual pressure value of the liquid storage tank.
In a possible implementation manner, the control unit is configured to send the actual pressure value of the reservoir tank to an intelligent terminal for display.
In one possible embodiment, the control valve comprises: the first electric stop valve is electrically connected with the control unit, and the control unit is used for triggering the first electric stop valve to connect or disconnect the liquid storage tank and the indoor heat exchanger; the reserve branch further comprises: the manual stop valve is connected with the first electric stop valve in parallel and used for connecting or disconnecting the liquid storage tank and the indoor heat exchanger under the action of external force; the air conditioning system further includes: the storage battery is electrically connected with the fan of the indoor heat exchanger and used for supplying power to the fan when the air conditioning system is powered off so that high-pressure liquid gas in the liquid storage tank can be refrigerated when entering the indoor heat exchanger.
In one possible embodiment, the indoor heat exchanger includes: the heat exchanger comprises heat exchange fins and two pipelines, wherein the two pipelines are arranged in the heat exchange fins in parallel, one of the two pipelines is connected to the storage branch, and the other of the two pipelines is connected to the main working branch.
In a possible embodiment, a second electric stop valve is arranged at an output end of the pipeline connected to the reserve branch, the second electric stop valve is electrically connected with the control unit, and the control unit is used for controlling the second electric stop valve to be opened to discharge the gas flowing out of the pipeline when the liquid storage tank provides high-pressure liquid gas for the indoor heat exchanger.
The technical personnel in the field can understand that the air conditioning system of the invention can realize refrigeration preferentially through the high-pressure liquid gas of the reserve branch circuit in the peak period of power utilization, and the main working branch circuit does not need to work, namely, the compressor and other devices of the main working branch circuit do not need to work, so that the refrigeration effect of the air conditioning system can be ensured, the power consumption of the air conditioning system in the peak period of power utilization can be reduced, and the service life of the air conditioning system can be prolonged. Further, through adopting the liquid jar that holds high-pressure liquid gas and detachable to be equipped with greatly, need not to start the compressor and provide highly compressed refrigerant for holding the liquid jar, do benefit to further reduction air conditioning system's energy consumption, do benefit to and practice thrift the electric energy, and through dismantling and changing the liquid jar that holds high-pressure liquid gas to releasing for the deposit branch road has sustainable usability.
Drawings
Preferred embodiments of an air conditioning system of the present invention will be described below with reference to the accompanying drawings. The attached drawings are as follows:
fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is an electrical schematic diagram of an air conditioning system according to an embodiment of the present invention;
fig. 3 is a schematic flow diagram of a refrigerant flowing in an air conditioning system refrigerating through an energy storage device storing the refrigerant according to an embodiment of the present invention.
In the drawings: 10-a main working branch; 11-a compressor; 12-an outdoor heat exchanger; 13-first throttling means; 30-reserve branch; 31-a liquid storage tank; 32-a mounting seat; 33-a first electrically powered stop valve; 34-a manual stop valve; 35-a pressure relay; 36-a meter; 37-a one-way valve; 38-a second throttling means; 39-a second electrically powered stop valve; 50-indoor heat exchanger; 70-control unit.
Detailed Description
First, it should be understood by those skilled in the art that these embodiments are merely for explaining technical principles of the embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
Next, it should be noted that, in the description of the embodiments of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or member must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, it should be noted that, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. Specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
An air conditioning system generally includes a compressor, an outdoor heat exchanger (alternatively referred to as a condenser), an indoor heat exchanger (alternatively referred to as an evaporator), and a throttling device; the compressor compresses the gaseous refrigerant into a high-temperature high-pressure gaseous state, and sends the gaseous refrigerant to the outdoor heat exchanger for cooling, the high-temperature high-pressure gaseous refrigerant is cooled and then becomes a medium-temperature high-pressure liquid refrigerant, the medium-temperature high-pressure liquid refrigerant is throttled and reduced by the throttling device and becomes a low-temperature low-pressure gas-liquid mixture, and the low-temperature low-pressure gas-liquid mixture is vaporized into a gaseous state by the indoor heat exchanger absorbing heat in air, so that the refrigeration effect is achieved; the gaseous refrigerant returns to the compressor to continue to be compressed, and the circulation is continued to carry out refrigeration.
For example, in some areas, in order to protect the power system, the amount of electricity consumed by residents is limited during peak hours. However, during the peak period of power consumption, such as 19 o 'clock to 21 o' clock, the user may operate the kitchen appliances such as the integrated kitchen range, the oven, the refrigerator and the air conditioning system, which are usually high power appliances, at the same time, which will make the power consumption of the user reach the limited power consumption quickly, and further cause the power failure of the user to disable the air conditioning system or increase the power consumption cost of the user.
Embodiments of the present invention are further improvements to the air conditioning system set forth above to overcome the above problems. The preferred embodiments of the air conditioning system of the present invention will be described in conjunction with the above.
Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present invention; FIG. 2 is an electrical schematic diagram of an air conditioning system according to an embodiment of the present invention; fig. 3 is a schematic flow diagram of a refrigerant flowing in an air conditioning system refrigerating through an energy storage device storing the refrigerant according to an embodiment of the present invention. Referring to fig. 1 to 3, an air conditioning system according to an embodiment of the present invention includes: a main working branch 10, a reserve branch 30, an indoor heat exchanger 50 and a control unit 70. The main working branch 10 and the reserve branch 30 are arranged in parallel. The outlets of the main working branch 10 and the reserve branch 30 are connected to an indoor heat exchanger 50. The storage branch 30 is used for storing high-pressure liquid gas, and the control unit 70 is used for triggering the storage branch 30 to provide the high-pressure liquid gas for the indoor heat exchanger 50 during the peak period of electricity utilization so as to realize a refrigeration function. The control unit 70 is further configured to trigger the main working branch 10 to provide a refrigerant to the indoor heat exchanger 50 to realize a refrigeration function during the non-power-consumption peak period or when the release of the high-pressure liquid gas stored in the reserve branch 30 is completed.
So, at the peak period of power consumption, can be preferentially through the high-pressure liquid gas realization refrigeration of deposit branch road 30, main work branch road 10 need not work this moment also that devices such as compressor 11 of main work branch road 10 need not work, can ensure air conditioning system's refrigeration effect, still does benefit to and reduces air conditioning system's power consumption in the peak period of power consumption, does benefit to the live time of extension air conditioning system. Further, by adopting the replaceable liquid storage tank 31 containing high-pressure liquid gas, the compressor 11 does not need to be started to provide high-pressure refrigerant for the liquid storage tank 31, the energy consumption of the air conditioning system is further reduced, and the electric energy is saved.
The structure and implementation of the main working branch 10 may be similar to the refrigeration branch of an existing air conditioner. Illustratively, the primary working branch 10 comprises: a compressor 11, an outdoor heat exchanger 12 and a first throttling device 13. An outlet of the compressor 11 is connected to an inlet of the outdoor heat exchanger 12, an outlet of the outdoor heat exchanger 12 is connected to an inlet of the first throttling device 13, an outlet of the first throttling device 13 is connected to an inlet of the indoor heat exchanger 50, and an outlet of the indoor heat exchanger 50 is connected to an inlet of the compressor 11. When the main working branch 10 performs refrigeration, the flow direction of the refrigerant is shown by an arrow in fig. 1, a high-temperature and high-pressure gaseous refrigerant flowing out of the compressor 11 enters the outdoor heat exchanger 12 for cooling, the high-temperature and high-pressure gaseous refrigerant is cooled to become a medium-temperature and high-pressure liquid refrigerant, the medium-temperature and high-pressure liquid refrigerant enters the first throttling device 13 for throttling and pressure reduction to become a low-temperature and low-pressure gas-liquid mixture, the low-temperature and low-pressure gas-liquid mixture enters the indoor heat exchanger 50 for absorbing heat in air and is vaporized to become the gaseous refrigerant, so that the refrigeration effect is achieved; the gaseous refrigerant returns to the compressor 11 to be compressed, and continues to circulate for refrigeration.
The main working branch 10 and the reserve branch 30 are disposed in parallel and are respectively and independently electrically connected to the control unit 70, so as to ensure respective working reliability of the two. The reserve branch 30 may have one or more. The number of the reserve branch 30 may be one, an outlet of the reserve branch 30 may be connected to the second throttling device 38 through the check valve 37, and the second throttling device 38 is connected to an inlet of the indoor heat exchanger 50, so as to facilitate the mutual independence between the reserve branch 30 and the main working branch 10; alternatively, the outlet of the reserve branch 30 is connected to the first throttling device 13 through a non-return valve 37, so as to reduce the number of components of the air conditioning system and reduce the cost. Among other things, the check valve 37 is used to prevent the backflow of the high-pressure liquid gas entering the indoor heat exchanger. The number of the reserve branch 30 may be multiple, for example, the number of the reserve branch 30 may be two or three or more, the plurality of reserve branches 30 may be connected in parallel, and the plurality of reserve branches 30 connected in parallel are then connected in parallel with the main working branch 10; for example, the outlets of the plurality of reserve branches 30 are all connected to the inlet of the second throttling device 38, the second throttling device 38 is connected to the inlet of the indoor heat exchanger 50, and the number of the second throttling devices 38 may be one or adapted to the number of the reserve branches 30.
The number of reserve branches 30 can be set according to the actual situation. For example, when the area of the area to be cooled by the air conditioning system is relatively large, a relatively large number of reserve branches 30 may be provided, and when the area of the area to be cooled by the air conditioning system is relatively small, a relatively small number of reserve branches 30 may be provided. For another example, in a region with a relatively high temperature, the refrigeration requirement is stronger, and a relatively large number of reserve branches 30 may be provided; in other areas, a relatively small number of reserve branches 30 may be provided.
When the number of the reserve branch lines 30 is plural, the reserve amounts of the plural reserve branch lines 30 may be the same or different, or the reserve amounts of some of the plural reserve branch lines 30 may be the same. The plurality of reserve branches 30 may be similar in structure. The functions of the components of the plurality of reserve lines 30 may be the same, and the parameters of the corresponding components of the plurality of reserve lines 30 may be the same or different, and may be set according to actual conditions.
The reserve branch 30 includes: a control valve and a liquid storage tank 31 which is detachably arranged. The reservoir tank 31 is used to contain a high-pressure liquid gas. The high-pressure liquid gas can be environmental protection gas in high-pressure liquid state, such as carbon dioxide or nitrogen in high-pressure liquid state, so as to reduce or even avoid pollution to the atmosphere. The control valve is used to connect or disconnect the liquid storage tank 31 and the indoor heat exchanger 50. The control valve may be an electrically controlled valve with an on-off function, for example, the control valve may include at least one of: a first electric shutoff valve 33, and an electromagnetic directional valve. The implementation process of this embodiment will be described below by taking the control valve as the first electric stop valve 33 as an example, and the implementation process when the control valve is an electromagnetic directional valve is similar to this, and is not described again in this embodiment. The control unit 70 is specifically configured to, when the power consumption peak period is currently in the power consumption peak period, trigger the first electric cut-off valve 33 of the reserve branch 30 to connect the liquid storage tank 31 with the indoor heat exchanger 50, so that the liquid storage tank 31 provides high-pressure liquid gas for the indoor heat exchanger 50 to perform refrigeration. The control unit 70 may also be configured to control the first electric shutoff valve 33 to close when it is determined that the high-pressure liquid gas in the reservoir tank 31 is released.
When cooling is performed through the reserve branch 30, the control unit 70 triggers the first electric cut-off valve 33 to open, the first electric cut-off valve 33 connects the liquid storage tank 31 of the branch where the first electric cut-off valve is located with the indoor heat exchanger 50, and the high-pressure liquid gas in the liquid storage tank 31 enters the indoor heat exchanger 50 as shown by the arrow in fig. 3 and absorbs heat in the air to vaporize, so as to achieve the purpose of cooling. When there are a plurality of reserve lines 30, the control unit 70 may sequentially control the plurality of reserve lines 30 to release the high-pressure liquid gas according to a preset sequence. The control unit 70 may include a controller or a circuit configuration capable of realizing the functions thereof.
The air conditioning system provided by the embodiment can realize refrigeration preferentially through the high-pressure liquid gas of the storage branch 30 in the power utilization peak period, and at the moment, the main working branch 10 does not need to work, that is, devices such as the compressor 11 of the main working branch 10 do not need to work, so that the refrigeration effect of the air conditioning system can be ensured, the reduction of the power consumption of the air conditioning system in the power utilization peak period is facilitated, and the service life of the air conditioning system is prolonged. Further, by adopting the detachable liquid storage tank 31 filled with high-pressure liquid gas, the compressor 11 does not need to be started to provide high-pressure refrigerant for the liquid storage tank 31, the energy consumption of the air conditioning system is further reduced, the electric energy is saved, and the liquid storage tank 31 releasing the high-pressure liquid gas is detached and replaced, so that the storage branch 30 has sustainable usability.
In an alternative technical solution, the air conditioning system further includes a mounting seat 32, the mounting seat 32 is used to mount the liquid storage tank 31 to a mounting position, the mounting position of the liquid storage tank 31 may be set according to actual needs, and the mounting position of the liquid storage tank 31 is not specifically limited in this embodiment. The mounting seat 32 may have a docking port, and the reservoir tank 31 has a docking end that is insertably inserted into the docking port. The mounting seat 32 may specifically include a mounting substrate, one side of which is used to be fixed to the mounting position. A connecting ring extending towards the liquid storage tank 31 is arranged on one side, facing the liquid storage tank 31, of the mounting substrate, the connecting ring is provided with an inserting hole parallel to the axial direction of the liquid storage tank 31, the size of the inserting hole is matched with that of the abutting end of the liquid storage tank 31, and the connecting ring and the inserting hole form an abutting port at the moment; or, a part of the surface of the mounting substrate facing the liquid storage tank 31 is recessed along a direction away from the liquid storage tank 31 to form an insertion hole, the size of the insertion hole is matched with the size of the abutting end of the liquid storage tank 31, and at this time, the insertion hole and the hole wall surrounding the insertion hole form an abutting interface. Of course, the implementation of the mounting seat 32 and the interface is not limited thereto, and the embodiment is only illustrated here by way of example as long as it can achieve the fixing of the liquid storage tank 31 to the mounting position and the detachable removal of the liquid storage tank 31. It will be appreciated that in other examples, the docking port of the mounting 32 may be pluggably inserted into the docking end of the reservoir tank 31.
The butt joint end of the liquid storage tank 31 can be provided with a plurality of elastic protrusions, correspondingly, the inner wall of the butt joint port can be provided with clamping grooves matched with the elastic protrusions, and the number and the arrangement rule of the clamping grooves can be matched with the elastic protrusions. The plurality of elastic projections are at least partially spaced apart in the circumferential direction of the reservoir tank 31. When the abutting end of the liquid storage tank 31 is inserted into the abutting port and is in place, the elastic protrusion can be clamped in the clamping groove, so that the abutting end of the liquid storage tank 31 is fixed in the abutting port; when the liquid storage tank 31 needs to be replaced, the liquid storage tank 31 can be pulled in a direction away from the mounting seat 32, so that the elastic protrusion can be separated from the clamping groove, and further, the butt end of the liquid storage tank 31 is separated from the butt port, and the liquid storage tank 31 can be supplemented with high-pressure liquid gas or replaced with a new liquid storage tank 31. Of course, the abutting end of the liquid storage tank 31 may be provided with an external thread, and the abutting end may be provided with an internal thread, and the abutting end of the liquid storage tank 31 may be screwed with the abutting end. It should be noted that: the manner of removably connecting the abutting end of the reservoir tank 31 to the abutting port of the mounting seat 32 is not limited thereto, and the embodiment is only exemplified here.
Alternatively, in order to increase the usage rate of the high-pressure liquid gas in the liquid storage tank 31, it is necessary to avoid leakage of the high-pressure liquid gas in the liquid storage tank 31 as much as possible, and therefore, a seal may be provided between the abutting end of the liquid storage tank 31 and the abutting interface of the mounting seat 32. The seal may in particular comprise a rubber gasket. Alternatively, the sealing member is a sealing structure formed by a sealing compound filled between the abutting port and the abutting end. Still alternatively, the seal may be formed by a labyrinth seal structure.
In an alternative solution, the reserve branch 30 further comprises: and a manual cut-off valve 34, the manual cut-off valve 34 being connected in parallel with the first electric cut-off valve 33, the manual cut-off valve 34 being configured to open and close the liquid storage tank 31 and the indoor heat exchanger 50 by an external force. In this way, when the first electric shutoff valve 33 fails, the manual shutoff valve 34 may also be used to control the connection or disconnection between the liquid storage tank 31 and the indoor heat exchanger 50, so as to further facilitate the operation reliability of the reserve branch 30 and the safety of the air conditioning system. The manual shut-off valve 34 may be embodied as a manually operated rotary shut-off valve with a rotary handle.
Optionally, the air conditioning system further comprises: the storage battery is electrically connected with the fan of the indoor heat exchanger 50 and used for supplying power to the fan of the indoor heat exchanger 50 when the air conditioning system is powered off so that the high-pressure liquid gas in the liquid storage tank 31 can realize a refrigeration function when entering the indoor heat exchanger 50; at this time, the manual cut-off valve 34 may control the connection and disconnection between the liquid storage tanks 31 and the indoor heat exchanger 50, and accordingly, the liquid storage tanks 31 may be provided with meters 36 through which a user may check the pressure conditions, and the user may determine which liquid storage tank 31 of the reserve branch 30 supplies the high-pressure liquid gas to the indoor heat exchanger 50 according to the pressure conditions of each liquid storage tank 31.
In other examples, the battery may also supply power to the fan of the indoor heat exchanger 50 and the control unit 70 when the air conditioning system is powered off, so that the control unit 70 can trigger the first electric shutoff valve 33 to open, and thus the high-pressure liquid gas in the liquid storage tank 31 can realize a refrigeration function when entering the indoor heat exchanger 50.
In an alternative solution, the reserve branch 30 further comprises: a pressure detecting member mounted to the reservoir tank 31 to detect an actual pressure value of the reservoir tank 31, which facilitates the control unit 70 to control the on/off of the reserve branch 30 according to the actual pressure value of the reservoir tank 31. The pressure detection member may specifically comprise a pressure sensor. The pressure sensor is electrically connected to the control unit 70. The control unit 70 is configured to trigger other storage branches 30 of the plurality of storage branches 30 to provide high-pressure liquid gas or determine that the high-pressure liquid gas stored in each storage branch 30 is completely released when it is determined that the actual pressure value in the corresponding storage tank 31 decreases to the lower pressure limit value according to the detection result of the pressure sensor.
Taking 3 reserve branches 30 as an example, when the reserve branches 30 are required to provide compressed liquid gas, the reserve branches 30 are sequentially released from right to left according to a preset rule. The control unit 70 controls the first electric stop valve 33-1 of the rightmost storage branch 30 (i.e. the branch where the liquid storage tank 31-1 is located) to open, the high-pressure liquid refrigerant in the liquid storage tank 31-1 of the storage branch 30 enters the indoor heat exchanger 50 through the first electric stop valve 33-1, the check valve 37 and the second throttling device 38 to realize the refrigeration function, meanwhile, the pressure sensor of the liquid storage tank 31-1 of the storage branch 30 detects the actual pressure value of the liquid storage tank 31-1 in real time or at preset intervals, the actual pressure value of the liquid storage tank 31-1 is adapted to the residual amount of the high-pressure liquid gas, when the control unit 70 determines that the actual pressure value of the liquid storage tank 31-1 is reduced to the lower pressure limit according to the detection result of the pressure sensor, it indicates that the high-pressure liquid gas in the liquid storage tank 31-1 is completely released, the control unit 70 triggers the first electric cut-off valve 33-1 of the reserve branch 30 to close, disconnects the reserve branch 30 from the indoor heat exchanger 50, and the control unit 70 controls the first electric cut-off valve 33-2 of the intermediate reserve branch 30 (i.e., the branch where the liquid storage tank 31-2 is located) to open, so that the liquid storage tank 31-2 of the intermediate reserve branch 30 provides high-pressure liquid gas to the indoor heat exchanger 50.
When the liquid storage tank 31-2 of the middle storage branch 30 supplies high-pressure liquid gas to the indoor heat exchanger 50, the pressure sensor of the liquid storage tank 31 of the middle storage branch 30 detects the actual pressure value of the liquid storage tank 31-2 in real time or at preset time intervals, when the control unit 70 determines that the actual pressure value of the liquid storage tank 31-2 is reduced to the lower pressure limit value according to the detection result of the pressure sensor, which indicates that the high-pressure liquid gas in the liquid storage tank 31-2 is completely released, the control unit 70 triggers the first electric stop valve 33-2 of the storage branch 30 to close, so as to disconnect the storage branch 30 located in the middle from the indoor heat exchanger 50, and the control unit 70 controls the first electric stop valve 33-3 of the storage branch 30 located at the leftmost end (i.e. the branch where the liquid storage tank 31-3 is located) to open, so that the liquid storage tank 31-3 of the reserve branch 30 located at the leftmost end supplies the high-pressure liquid gas to the indoor heat exchanger 50.
When the liquid storage tank 31-3 of the leftmost storage branch 30 supplies the high-pressure liquid gas to the indoor heat exchanger 50, the pressure sensor of the liquid storage tank 31-3 of the leftmost storage branch 30 detects the actual pressure value of the liquid storage tank 31-3 in real time or at preset time intervals, and when the control unit 70 determines that the actual pressure value of the liquid storage tank 31-3 is reduced to the lower pressure limit value according to the detection result of the pressure sensor, which indicates that the high-pressure liquid gas in the liquid storage tank 31-3 is completely released, the control unit 70 triggers the first electric stop valve 33-3 of the storage branch 30 to close, so that the high-pressure liquid gas of each storage branch 30 is completely released.
The control unit 70 may trigger the main working branch 10 to operate when it determines that the high-pressure liquid gas in the reserve branch 30 is completely released, or trigger a corresponding visual or audio prompt to prompt the user to replace the reservoir tank 31. When the control unit 70 determines that the release of the high-pressure liquid gas of the reserve branch 30 is completed to trigger a corresponding prompt, in a specific implementation, after the release of the high-pressure liquid gas of at least one reserve branch 30 is completed, the control unit 70 may trigger the corresponding prompt. After the high-pressure liquid gas of different reserve branches 30 is released, the prompts triggered by the control unit 70 may be different, that is, the control unit 70 may differently prompt according to the position or the sequence of the reserve branch 30 after the high-pressure liquid gas of the reserve branch 30 is released, so as to facilitate a user to know the liquid storage condition of the plurality of reserve branches 30 in time.
For example, when the release of the high-pressure liquid gas in the middle reserve branch 30 is completed, the control unit 70 may trigger the display or the indicator light to light up a yellow light; when the release of the high-pressure liquid gas from the leftmost reserve branch 30 is completed, the control unit 70 may trigger the display or the indicator light to light a red light. For another example, when the high-pressure liquid gas in the rightmost reserve branch 30 is completely released, the control unit 70 may trigger the display or the indicator light to light up a yellow light; when the release of the high-pressure liquid gas in the middle storage branch 30 is completed, the control unit 70 may trigger the display or the indicator light to light up red light, and when the release of the high-pressure liquid gas in the leftmost storage branch 30 is completed, the control unit 70 may trigger the display or the indicator light to light up red light and blink. At this time, the indication of the completion of the release of the high-pressure liquid gas is not limited thereto, and the embodiment is only illustrated here. The control unit is further configured to trigger the intelligent terminal of the user to display the actual pressure value of the liquid storage tank 31, so that the user can know the remaining amount of the high-pressure liquid gas in the liquid storage tank 31 in time, and the user can replace the liquid storage tank 31 in time.
Optionally, the reserve branch 30 further comprises: and the pressure relay 35 is further included, the pressure relay 35 is connected to the corresponding liquid storage tank 31, and the pressure relay 35 is used for triggering the first electric stop valve 33 connected to the liquid storage tank 31 to close when the actual pressure value in the corresponding liquid storage tank 31 falls to the lower pressure limit value, so as to disconnect the corresponding liquid storage tank 31 from the indoor heat exchanger 50. When the high-pressure liquid gas in the liquid storage tank 31 is released completely, the actual pressure value in the liquid storage tank 31 is reduced to the lower pressure limit value, the pressure relay 35 is triggered to send an electric signal, the electric signal is used for triggering the first electric stop valve 33 to be closed so as to disconnect the storage branch 30 from the indoor heat exchanger 50, the electric signal sent by the pressure relay 35 is also used for triggering other storage branches 30 in the plurality of storage branches 30 to provide the high-pressure liquid gas or triggering the control unit 70 to determine that the high-pressure liquid gas stored in each storage branch 30 is released completely.
As shown in fig. 3, when the actual pressure value of the liquid storage tank 31-1 decreases to the lower pressure limit value, the pressure relay 35-1 sends an electric signal Y1, the first electric shutoff valve 33-1 is closed when power is lost, the first electric shutoff valve 33-2 is opened when power is supplied, and the liquid storage tank 31-2 starts to release high-pressure liquid gas. When the actual pressure value of the liquid storage tank 31-2 is reduced to the lower pressure limit value, the pressure relay 35-2 sends an electric signal Y2, the first electric stop valve 33-2 is powered off and closed, the first electric stop valve 33-3 is powered on and opened, and the liquid storage tank 31-3 starts to release high-pressure liquid gas. When the actual pressure value of the reservoir tank 31-3 is reduced to the lower pressure limit value, the control unit 70 confirms that the release of the high-pressure liquid gas of each reserve branch 30 is completed.
In a specific implementation, the reserve branch 30 may be provided with one of a pressure sensor and a pressure relay 35 to reduce the cost; in order to ensure the reliability of each refrigeration function, the storage branch 30 may be provided with a pressure sensor and a pressure relay 35, and the pressure sensor and the pressure relay 35 may work cooperatively, for example, the pressure relay 35 may be used as a main component, but when the pressure sensor detects that the actual pressure value in the reservoir tank 31 is reduced to the lower pressure limit value and lasts for a set time, the control unit 70 may directly trigger the first electric shutoff valve 33 to close or trigger the pressure relay 35 to send an electric signal.
In an alternative solution, in order to ensure the operational reliability of the reserve branch 30 and the main working branch 10, two independent pipelines may be provided in the indoor heat exchanger 50. Specifically, the indoor heat exchanger 50 includes: the heat exchanger comprises heat exchange fins and two pipelines, wherein the two pipelines are arranged in the heat exchange fins in parallel. The inlet of one of the two pipelines is connected to the storage branch 30, and the outlet of the pipeline is directly communicated with the outside of the room so as to discharge the environment-friendly gas to the outside of the room; the other of the two lines is connected to the outlet of the main working branch 10, the outlet of which is connectable to the compressor 11, so that the refrigerant can return to the compressor 11 for refrigeration.
Alternatively, a second electric cut-off valve 39 is provided at an output end of the pipe connected to the reserve branch 30, the second electric cut-off valve 39 is electrically connected to the control unit 70, and the control unit 70 is configured to control the second electric cut-off valve 39 to be opened to discharge the environmental gas flowing out of the pipe when the liquid storage tank 31 supplies the high-pressure liquid gas to the indoor heat exchanger 50. It can be understood that: in this example, the first and second electric cutoff valves 33 and 39 may be electrically opened and electrically closed.
In this example, the reserve branch 30 and the main working branch 10 are respectively connected to the indoor heat exchange pipelines which are independent from each other, so that the reserve branch 30 and the main working branch 10 can be ensured to be independent from each other, mutual interference between the reserve branch 30 and the main working branch is avoided, the refrigeration performance of the main working branch 10 is effectively ensured, and when one of the reserve branch 30 and the main working branch 10 fails, the other branch can still work normally, and the air conditioning system can still refrigerate. In other examples, the reserve branch 30 and the main working branch 10 may be connected to the indoor heat exchangers 50 independently to ensure that the reserve branch 30 and the main working branch 10 are independent.
With the air conditioning system provided in this embodiment, when the air conditioning system works specifically, when the control unit 70 receives a refrigeration instruction from the intelligent terminal, the control unit 70 may first obtain the current time, and when the control unit 70 determines that the air conditioning system is in the non-power-consumption peak period according to the obtained current time, the control unit 70 controls the main working branch 10 to provide a refrigerant to a corresponding pipeline of the indoor heat exchanger 50 to implement refrigeration. When the control unit 70 monitors that the current time belongs to the power consumption peak period or when the control unit 70 receives a refrigeration instruction from the intelligent terminal, the control unit 70 determines that the current time is in the power consumption peak period according to the acquired current time, the control unit 70 controls the storage branch 30 to release the high-pressure liquid gas, and at this time, the compressor 11 and the outdoor heat exchanger 12 do not need to work, so that the power consumption of the air conditioning system is greatly reduced.
When the control unit 70 controls the storage branch 30 to release the high-pressure liquid gas, the first electric stop valve 33-1 and the second electric stop valve 39 are powered on to open, the high-pressure liquid gas flows in the direction shown by the arrow in fig. 3, the high-pressure liquid gas flows out of the liquid storage tank 31, passes through the first electric stop valve 33-1, the check valve 37 and the second throttling device 38, enters the indoor heat exchanger 50, the high-pressure liquid gas absorbs heat in the indoor heat exchanger 50 and is vaporized into gas, and the vaporized gas is discharged to outdoor air through the second electric stop valve 39.
When the actual pressure value of the liquid storage tank 31-1 is reduced to the lower pressure limit value, it indicates that the high-pressure liquid gas in the liquid storage tank 31-1 is insufficient, that is, the high-pressure liquid gas in the liquid storage tank 31-1 is released, at this time, the pressure relay 35-1 sends an electric signal Y1, the first electric shutoff valve 33-1 is powered off and closed, the first electric shutoff valve 33-2 is powered on and opened, the liquid storage tank 31-2 starts to release the high-pressure liquid gas, and the working process of the liquid storage tank 31-2 is similar to that of the liquid storage tank 31-1.
When the actual pressure value of the liquid storage tank 31-2 is reduced to the lower pressure limit value, it indicates that the high-pressure liquid gas in the liquid storage tank 31-2 is insufficient, that is, the high-pressure liquid gas in the liquid storage tank 31-2 is released, at this time, the pressure relay 35-2 sends an electric signal Y2, the first electric shutoff valve 33-2 is powered off and closed, the first electric shutoff valve 33-3 is powered on and opened, the liquid storage tank 31-3 starts to release the high-pressure liquid gas, and the working process of the liquid storage tank 31-3 is similar to that of the liquid storage tank 31-1. When the actual pressure value of the liquid storage tank 31-3 is reduced to the lower pressure limit, it indicates that the high-pressure liquid gas in the liquid storage tank 31-3 is insufficient, that is, the high-pressure liquid gas in the liquid storage tank 31-3 is released completely, and at this time, if the liquid storage tank 31 is not replaced, it is determined that the high-pressure liquid gas in each reserve branch 30 is released completely, and the control unit 70 may trigger the main working branch 10 to perform cooling.
It should be noted that: in the peak period of power consumption, the implementation manner of the present embodiment is not limited thereto, and the present embodiment is only exemplified here. For example, when the control unit 70 determines that the power consumption is in a peak period according to the obtained current time, the control unit 70 may first obtain the power consumption of the user, and determine to trigger the liquid storage tank 31 to provide the refrigerant to the indoor heat exchanger 50 for cooling or trigger the main working branch 10 for cooling according to the difference between the current power consumption of the user and the limited power consumption. Specifically, when the difference between the current power consumption of the user and the limited power consumption is greater than the preset difference, the control unit 70 may trigger the main working branch 10 to perform cooling, and when the control unit 70 determines that the difference between the current power consumption of the user and the limited power consumption is reduced to the preset difference, the control unit triggers the reserve branch 30 to provide high-pressure liquid gas to perform cooling.
For another example, the control unit 70 may determine to trigger the reserve branch 30 to provide high-pressure liquid gas for refrigeration or to trigger the main working branch 10 for refrigeration according to the condition of the electric equipment activated by the user; specifically, when the overall power consumption of the user-started electrical equipment reaches the preset power consumption, the control unit 70 may trigger the storage branch 30 to provide high-pressure liquid gas for refrigeration, and when the overall power consumption of the user-started electrical equipment is lower than the preset power consumption, the control unit 70 may trigger the main working branch 10 to refrigerate.
It should be noted that: the operation process of the air conditioning system provided by the embodiment is not limited to this, and the embodiment is only illustrated here.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. An air conditioning system, characterized in that the air conditioning system comprises: the system comprises a main working branch, a storage branch, an indoor heat exchanger and a control unit; the main working branch and the reserve branch are arranged in parallel, and outlets of the main working branch and the reserve branch are connected to the indoor heat exchanger;
the reserve branch includes: the liquid storage tank is used for containing high-pressure liquid gas, and the control valve is used for connecting or disconnecting the liquid storage tank and the indoor heat exchanger;
the control unit is used for triggering the control valve of the storage branch to conduct the liquid storage tank and the indoor heat exchanger when the control unit is in the electricity utilization peak period at present, so that the liquid storage tank provides high-pressure liquid gas for the indoor heat exchanger to refrigerate.
2. The air conditioning system of claim 1, wherein the high pressure liquid gas comprises high pressure liquid carbon dioxide and/or nitrogen.
3. The air conditioning system of claim 1, further comprising a mounting base having a docking port, wherein the docking end of the reservoir tank is removably connected to the docking port.
4. An air conditioning system according to claim 3, wherein a seal is provided between the abutting end of the reservoir tank and the abutting port of the mounting block.
5. The air conditioning system of claim 1, wherein the reserve branch has a plurality of, the plurality of reserve branches being arranged in parallel;
and/or the control unit is also used for triggering the main working branch to refrigerate when the high-pressure liquid gas of the storage branch is released completely.
6. The air conditioning system of claim 1, wherein the reserve branch further comprises: a pressure detection piece mounted to the liquid storage tank, the pressure detection piece being electrically connected with the control unit; the pressure detection piece is used for detecting the actual pressure value of the liquid storage tank connected with the pressure detection piece; the control unit is used for triggering other storage branches in the plurality of storage branches to provide high-pressure liquid gas or determining that the high-pressure liquid gas stored in each storage branch is completely released when the actual pressure value in the corresponding liquid storage tank is determined to be reduced to the lower pressure limit value according to the detection result of the pressure detection piece;
and/or the presence of a gas in the gas,
the reserve branch further comprises: the pressure relay is used for triggering a first electric stop valve connected to the liquid storage tank to close to disconnect the corresponding liquid storage tank from the indoor heat exchanger when the actual pressure value in the corresponding liquid storage tank is reduced to a lower pressure limit value, and is also used for triggering other storage branches in the plurality of storage branches to provide high-pressure liquid gas or triggering a control unit to determine that the high-pressure liquid gas stored in each storage branch is completely released.
7. The air conditioning system of claim 1, further comprising: the instrument is electrically connected with the pressure sensor or the control unit and is used for displaying the current actual pressure value of the liquid storage tank; and/or the control unit is used for sending the actual pressure value of the liquid storage tank to an intelligent terminal for displaying.
8. The air conditioning system of claim 6, wherein the control valve comprises: the first electric stop valve is electrically connected with the control unit, and the control unit is used for triggering the first electric stop valve to connect or disconnect the liquid storage tank and the indoor heat exchanger;
the reserve branch further comprises: the manual stop valve is connected with the first electric stop valve in parallel and used for connecting or disconnecting the liquid storage tank and the indoor heat exchanger under the action of external force;
the air conditioning system further includes: the storage battery is electrically connected with the fan of the indoor heat exchanger and used for supplying power to the fan when the air conditioning system is powered off so that high-pressure liquid gas in the liquid storage tank can be refrigerated when entering the indoor heat exchanger.
9. The air conditioning system of claim 1, wherein the indoor heat exchanger comprises: the heat exchanger comprises heat exchange fins and two pipelines, wherein the two pipelines are arranged in the heat exchange fins in parallel, one of the two pipelines is connected to the storage branch, and the other of the two pipelines is connected to the main working branch.
10. The air conditioning system as claimed in claim 9, wherein an output end of the pipe connected to the reserve branch is provided with a second electric shutoff valve, the second electric shutoff valve is electrically connected to the control unit, and the control unit is configured to control the second electric shutoff valve to open to discharge the gas flowing out of the pipe when the liquid storage tank supplies the high-pressure liquid gas to the indoor heat exchanger.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110657228.8A CN113357854A (en) | 2021-06-11 | 2021-06-11 | Air conditioning system |
| PCT/CN2022/074354 WO2022257483A1 (en) | 2021-06-11 | 2022-01-27 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110657228.8A CN113357854A (en) | 2021-06-11 | 2021-06-11 | Air conditioning system |
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| CN113357854A true CN113357854A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110657228.8A Pending CN113357854A (en) | 2021-06-11 | 2021-06-11 | Air conditioning system |
Country Status (2)
| Country | Link |
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| CN (1) | CN113357854A (en) |
| WO (1) | WO2022257483A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257483A1 (en) * | 2021-06-11 | 2022-12-15 | 青岛海尔空调器有限总公司 | Air conditioning system |
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| CN104566699B (en) * | 2013-10-10 | 2017-06-20 | 海尔集团公司 | Accumulation of energy multi-variable air conditioning unit and its control method |
| WO2018006569A1 (en) * | 2016-07-08 | 2018-01-11 | 广东美的制冷设备有限公司 | Air-conditioning system |
| CN113357854A (en) * | 2021-06-11 | 2021-09-07 | 青岛海尔空调器有限总公司 | Air conditioning system |
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- 2021-06-11 CN CN202110657228.8A patent/CN113357854A/en active Pending
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| JP2000211351A (en) * | 1999-01-27 | 2000-08-02 | Nissan Shatai Co Ltd | Air conditioning device |
| CN102182490A (en) * | 2011-03-09 | 2011-09-14 | 南京航空航天大学 | Efficient refrigerating system and method of high-pressure power source |
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| WO2022257483A1 (en) * | 2021-06-11 | 2022-12-15 | 青岛海尔空调器有限总公司 | Air conditioning system |
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| WO2022257483A1 (en) | 2022-12-15 |
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Application publication date: 20210907 |