CN210832381U - Air conditioning system - Google Patents
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- CN210832381U CN210832381U CN201921831694.8U CN201921831694U CN210832381U CN 210832381 U CN210832381 U CN 210832381U CN 201921831694 U CN201921831694 U CN 201921831694U CN 210832381 U CN210832381 U CN 210832381U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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Abstract
The utility model discloses an air conditioning system. The air conditioning system includes an outdoor unit, an indoor unit, and a water tank unit. Wherein the outdoor unit includes a compressor and an outdoor heat exchanger. The indoor unit includes an indoor heat exchanger and an indoor throttling device. The water tank unit comprises a water tank coil and a coil throttling device. The air conditioning system has an indoor loop, a first tank loop, and a second tank loop. The second tank circuit and the first tank circuit are switchable for use. The utility model discloses an air conditioning system can refrigerate the indoor environment, prepares hot water simultaneously.
Description
Technical Field
The utility model relates to an air conditioning system technical field, in particular to air conditioning system.
Background
Currently, an air conditioning system combining an air conditioner and a heat pump water heater appears on the market. However, the hot water function and the air conditioning function (cooling or heating the indoor environment) of the conventional air conditioning system are not completely independent, and only hot water can be prepared under the condition of air conditioning heating, but hot water cannot be prepared under the condition of air conditioning cooling, and the requirements of users on indoor environment regulation and household hot water cannot be met at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air conditioning system aims at providing a new air conditioning system, air conditioning system can prepare hot water under the refrigerated condition.
In order to achieve the above object, the present invention provides an air conditioning system, the air conditioning system includes outdoor unit, indoor unit and water tank unit, outdoor unit includes compressor and outdoor heat exchanger, indoor unit includes indoor heat exchanger and indoor throttling arrangement, the water tank unit includes water tank coil pipe and coil pipe throttling arrangement.
The air conditioning system further comprises an exhaust pipe connected with the exhaust side of the compressor, an air return pipe connected with the air return side of the compressor, a first pipe sequentially connected with the exhaust pipe, the indoor throttling device and the indoor heat exchanger, and a second pipe connected with the indoor heat exchanger and the air return pipe, so that an indoor loop is formed.
The air conditioning system further includes a first branch pipe branched from a first intersection of the first piping, the first intersection being located between the outdoor heat exchanger and the coil throttling device, and a second branch pipe branched from the second piping, the first branch pipe connecting the coil throttling device, the tank coil, and the second branch pipe in this order to constitute a first tank circuit.
The air conditioning system further comprises a high-pressure tubing, one end of the high-pressure tubing is connected with the exhaust pipe, the other end of the high-pressure tubing is connected with the water tank coil pipe to form a second water tank loop, and the second water tank loop and the first water tank loop can be switched to use.
Optionally, the air conditioning system further comprises a first control valve provided in the high-pressure piping.
Optionally, the air conditioning system further comprises a second control valve, and the second control valve is arranged on the second branch pipe.
Optionally, the air conditioning system further comprises a first switch switchable between a first state and a second state, wherein:
in the first state, the first switch communicates the exhaust pipe with the first pipe;
in the second state, the first switch communicates the muffler with the first pipe.
Optionally, the air conditioning system further comprises a second switch switchable between a third state and a fourth state, wherein:
in the third state, the second switch communicates the exhaust pipe with the second pipe;
in the fourth state, the second switch communicates the return pipe with the second pipe.
Optionally, the first and/or second switches are three-way valves or four-way valves.
Optionally, the air conditioning system further includes a first switching valve provided in the first pipe and located between the first intersection and the outdoor heat exchanger.
Optionally, the air conditioning system further includes a second switching valve provided on the second pipe.
Optionally, the air conditioning system further includes a third on/off valve provided on the high-pressure pipe.
Optionally, the air conditioning system further includes a third branch pipe branched from the second pipe, the third branch pipe connecting the second pipe and the indoor heat exchanger, the third branch pipe being provided with a third control valve.
Optionally, the air conditioner further comprises an economizer disposed on a first piping between the outdoor heat exchanger and the first junction, a return pipe of the economizer communicating with a return side of the compressor.
The technical scheme of the utility model, air conditioning system's the common same outdoor unit of indoor unit and water tank unit can realize independent refrigeration or heating through the cooperation of indoor unit and outdoor unit. Because the air conditioning system is also provided with the first water tank loop and the second water tank loop, the water tank unit can be matched with the outdoor unit and/or the indoor unit by switching the first water tank loop or the second water tank loop, so that a plurality of refrigerant circulating loops for preparing hot water or cold water are formed, the hot water or cold water can be prepared in the refrigerating or heating mode of the indoor unit, and the requirements of users are greatly met.
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 an embodiment of an air conditioning system according to the present invention;
FIG. 2 is a schematic diagram of the combined cooling and heating water mode 1 of the air conditioning system of FIG. 1;
FIG. 3 is a schematic diagram of combined cooling and heating water mode 2 of the air conditioning system of FIG. 1;
FIG. 4 is a schematic diagram of a combined heating and hot water mode of the air conditioning system of FIG. 1;
FIG. 5 is a schematic diagram of a combined cooling and cold water mode of the air conditioning system of FIG. 1;
FIG. 6 is a schematic diagram of a single hot water mode of the air conditioning system of FIG. 1;
fig. 7 is a schematic diagram of a single cold water mode of the air conditioning system of fig. 1.
The reference numbers illustrate:
the purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
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, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications 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 indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an air conditioning system, air conditioning system integration has underfloor heating system to can realize working modes such as refrigeration mode, heating mode, constant temperature dehumidification mode and underfloor heating mode. The air conditioning system is provided.
Referring to fig. 1, in an embodiment of the air conditioning system of the present invention, the air conditioning system includes an outdoor unit 100, an indoor unit 200, and a water tank unit 300. Wherein the outdoor unit 100 includes a compressor 110 and an outdoor heat exchanger 120. The indoor unit 200 includes an indoor heat exchanger 210 and an indoor throttling device 220. The tank unit 300 includes a tank coil 310 and a coil restriction 320.
It should be noted that, for the air conditioning system, the outdoor unit 100 exchanges heat with the outdoor environment, and is not particularly located outdoors; similarly, the indoor units 200 that will be described later are not intended to be located indoors, but are intended to exchange heat with an indoor environment. For example, when the air conditioning system is a window type air conditioner, the outdoor unit 100 and the indoor unit 200 are located in the same housing, and the outdoor unit 100 exchanges heat with the outdoor environment. When the air conditioning system is a split type air conditioner, the outdoor unit 100 and the indoor unit 200 are separately installed in different housings, and the body including the outdoor unit 100 is installed in an outdoor environment, and the body including the indoor unit 200 is installed in an indoor environment.
The air conditioning system further includes an exhaust pipe 111 connected to an exhaust side of the compressor 110, a return pipe 112 connected to a return side of the compressor 110, a first pipe 400 connecting the exhaust pipe 111, the indoor throttle device 220, and the indoor heat exchanger 210 in this order, and a second pipe 500 connecting the indoor heat exchanger 210 and the return pipe 112, thereby constituting an indoor circuit;
the air conditioning system further includes a first branch pipe 101 branched from a first intersection point 410 of the first piping 400, and a second branch pipe 102 branched from the second piping 500, the first branch pipe 101 sequentially connecting the coil throttling device 320, the tank coil 310, and the second branch pipe 102 to constitute a first tank circuit, wherein the first intersection point 410 is located between the outdoor heat exchanger 120 and the coil throttling device 320;
the air conditioning system further includes a high-pressure pipe 600, one end of the high-pressure pipe 600 is connected to the exhaust pipe 111, and the other end of the high-pressure pipe 600 is connected to the tank coil 310 to form a second tank circuit. The second tank circuit and the first tank circuit are switchable for use. After the air conditioning system starts the water tank unit 300, the refrigerant passes through the water tank coil 310, and in the process, the refrigerant exchanges heat with water in the water tank through the water tank coil 310, so that the temperature of the water in the water tank is increased or decreased, and hot water or cold water is prepared for a user to take.
There are various ways to realize the switching between the two loops, such as but not limited to: by providing control valves in the second branch pipe 102 and the high-pressure pipe 600, the first tank circuit and the second tank circuit are switched by the control valves. Alternatively, the second branch pipe 102 and the high-pressure pipe 600 are connected to the tank coil 310 by a three-way valve, so that the first tank circuit and the second tank circuit are switched. The first switching manner is adopted herein, and is specifically described later.
There are various implementations of the above throttling devices, such as a throttle valve, a capillary tube, an electronic expansion valve, etc. Such as but not limited to: the indoor throttle device 220, or the coil throttle device 320, may each include a throttle valve.
The technical scheme of the utility model, same outdoor unit 100 is common to air conditioning system's indoor unit 200 and water tank unit 300, compact structure, and occupation space is little, the installation of being convenient for. The separate cooling or heating can be achieved by the indoor unit 200 and the outdoor unit 100 being coupled. Since the air conditioning system further includes a first tank circuit and a second tank circuit, the tank unit 300 may be coupled to the outdoor unit 100 and/or the indoor unit 200 through the first tank circuit or the second tank circuit, and may form various circuits for preparing hot water or cold water, so that hot water or cold water can be prepared in both cooling and heating modes of the indoor unit 200, thereby greatly satisfying the user's needs.
Referring to fig. 1, based on the above embodiment, the air conditioning system further includes a first switch 150, and the first switch 150 can be switched between a first state and a second state. Wherein: in the first state, the first switch 150 communicates the exhaust pipe 111 with the first pipe 400; in the second state, the first switch 150 communicates the muffler 112 with the first pipe 400.
By the arrangement of the first switch 150, in the first state, the air conditioning system is in a cooling state, such as cooling by the indoor heat exchanger 210 and/or cooling by the water tank coil 310; in the second state, the air conditioning system is in a heating state, such as heating by the indoor heat exchanger 210 and/or heating by the tank coil 310. As will be described in more detail below.
Further, the air conditioning system further includes a second switch 160, and the second switch 160 is switchable between a third state and a fourth state. In the third state, the second switch 160 connects the exhaust pipe 111 to the second pipe 500; in the fourth state, the second switch 160 connects the return pipe 112 to the second pipe 500.
The second switch 160 is disposed in cooperation with the first switch 150, so that the air conditioning system can be in a cooling state in a third state, such as cooling by the indoor heat exchanger 210 or cooling by the water tank coil 310; in the fourth state, the air conditioning system is in a heating state, such as the indoor heat exchanger 210 cooling and/or the tank coil 310 heating. Thus, multiple functions which are more than those of the conventional four-way valve can be realized. For example, in cooling, the first switch 150 is switched to the first state while the second switch 160 is switched to the third state; in heating, the first switch 150 is switched to the second state, and simultaneously the second switch 160 is switched to the fourth state. As will be described in more detail below.
It should be noted that the first switch 150 and/or the second switch 160 are three-way valves or four-way valves. The first switch 150 and the second switch 160 may exist at the same time, or one of them may be used, and the air conditioner may be switched between four modes of constant temperature dehumidification, single heating, single refrigeration, and floor heating with other communication valve structures (such as a two-way valve).
In the present embodiment, the first switch 150 and the second switch 160 are both four-way valves, and one end of each four-way valve is configured as a normally closed end. Wherein:
the first switch 150 has D1Terminal, C1Terminal, E1Terminal, S1And E is1The terminal is configured as a normally closed terminal. Said D1End connected to the discharge pipe 111 of the compressor 110, C1End-connected outdoor heat exchanger 120, said S1The end is connected with the muffler 112 of the compressor 110. The first switch 150 is in the first state, D1Terminal and C1The ends are communicated; the first switch 150 is in the second state, C1Terminal and S1The ends are communicated.
The second switch 160 has D2Terminal, C2Terminal, E2Terminal, S2And C is2The terminal is configured as a normally closed terminal. Said D2End-connected discharge pipe 111 of compressor 110, E2End-connected to the second piping 500, S2The end is connected with the muffler 112 of the compressor 110. The second switch 160 is in the third state, E2Terminal and S2The ends are communicated; the second switch 160 is in the fourth state, D2Terminal and S2The ends are communicated.
Referring to fig. 1, in an embodiment, in order to better control the on/off of the pipes of the air conditioning system, the air conditioning system further includes a first switching valve k1 disposed in the first pipe 400, and the first switching valve k1 is located between the outdoor heat exchanger 120 and the indoor throttling device 220. The first switching valve k1 controls the opening and closing of the first pipe 400. The air conditioning system further includes a second switching valve k2 provided in the second pipe 500, and a second switching valve k2 is provided between the indoor heat exchanger 210 and the return air pipe 112. The second switching valve k2 controls the opening and closing of the second pipe 500. The first switching valve k1 and the second switching valve k2 may be a stop valve or a control valve.
In another embodiment, in order to switch the air conditioner between different modes, the air conditioning system further includes a first control valve 330, and the first control valve 330 is disposed in the high pressure piping 600. The first control valve 330 may control the opening/closing of the high-pressure pipe 600 and/or adjust the flow rate, flow velocity, and the like of the refrigerant passing through the high-pressure pipe 600. The first control valve 330 may include a control valve. The air conditioning system further comprises a second control valve 340, and the second control valve 340 is arranged on the second branch pipe 102. The second control valve 340 can control the on/off of the second branch pipe 102 and/or adjust the flow rate, flow speed, etc. of the refrigerant passing through the second branch pipe 102. The second control valve 340 may include a control valve or a general switching valve.
Optionally, the first control valve 330 and the second control valve 340 are both control valves. The first control valve 330 and the second control valve 340 are controlled to open and close, so that the first tank circuit and the second tank circuit can be automatically switched, and thus different operation modes can be realized.
The respective modes of the air conditioning system are explained in detail as follows:
referring to fig. 2, a combined cooling and heating water mode 1 of an air conditioning system:
in the combined cooling and heating mode 1, the first switch 150 is switched to the first state, the second switch 160 is switched to the third state, the first control valve 330 is opened, and the second control valve 340 is closed. The compressor 110 discharges the high-temperature and high-pressure refrigerant from the discharge pipe 111, and then from the first switching unit 150D1End into and from C1Out of the way and then split into two parts (a first part and a second part). A first part of the refrigerant enters the exterior heat exchanger 120 through the first pipe 400 and is liquefied, and the liquefied refrigerant flows from the first switching valve k1 to the first pipe 40A first intersection 410 of 0. The second part of the refrigerant enters the tank coil 310 through the high pressure pipe 600 and the first control valve 330, is liquefied and releases heat to produce hot water (i.e., the hot water is produced by the second tank circuit), and flows from the first branch pipe 101 to the first intersection 410 of the first pipe 400 after being liquefied, and then joins the first part of the refrigerant.
The merged refrigerant enters the indoor heat exchanger 210 through the indoor throttling device 220, and is subjected to evaporation refrigeration in the indoor heat exchanger 210, so that the indoor environment is refrigerated. The gaseous refrigerant evaporated and discharged from the indoor heat exchanger 210 flows to the second switching unit 160 through the second pipe 500 and the second switching valve k2, and flows from E of the second switching unit 1602End into and from S2Finally, the refrigerant flows back to the compressor 110 through the gas-liquid separator 140 and the air return pipe 112 to be circulated again, so that the indoor environment is refrigerated and hot water is prepared at the same time.
Referring to fig. 3, a combined cooling and heating mode 2 of the air conditioning system:
in the combined cooling and heating mode 2, the first switch 150 is closed, the second switch 160 is switched to the third state, the first control valve 330 is opened, the second control valve 340 is closed, and the first switching valve k1 is closed. The compressor 110 discharges a high-temperature and high-pressure refrigerant from the discharge pipe 111, and the refrigerant enters the tank coil 310 through the high-pressure pipe 600 to be liquefied and released to produce hot water (that is, to produce hot water by the second tank circuit), and the refrigerant flows from the first branch pipe 101 to the first cross point 410 of the first pipe 400 after being liquefied, and the outdoor unit 100 is closed (the first switching valve k1 is closed), so that the refrigerant enters the indoor heat exchanger 210 through the first pipe 400 and is evaporated in the indoor heat exchanger 210, thereby cooling the indoor environment. The evaporated refrigerant flows to the second switching unit 160 through the second pipe 500 and the second on/off valve k2, and then flows from E of the second switching unit 1602End into and from S2Finally, the refrigerant flows back to the compressor 110 through the gas-liquid separator 140 and the air return pipe 112 to be circulated again, so that the refrigeration and the hot water preparation are realized.
Compared with the refrigeration and hot water combined mode 1, the refrigeration and hot water combined mode 2 has the advantages that the indoor heat exchanger 210 serves as the outdoor heat exchanger 120, so that the indoor environment is refrigerated by utilizing the cold energy obtained by heat exchange, the cold energy of the air conditioning system is effectively utilized, and the energy utilization rate is improved.
Referring to fig. 4, a combined heating and hot water mode of the air conditioning system:
in the combined heating and hot water mode, the first switch 150 is switched to the second state, the second switch 160 is switched to the fourth state, the first control valve 330 is closed, and the second control valve 340 is opened. The compressor 110 discharges the high-temperature and high-pressure refrigerant from the discharge pipe 111, and then from the second switching device 160D2End into and from E2The refrigerant flows out along the second pipe 500 to the second switching valve k2, reaches the second intersection 510 of the second pipe 500, and then is divided into two portions (a first portion and a second portion). The first part of the refrigerant enters the indoor heat exchanger 210 to be liquefied and released to heat the indoor heat exchange, and flows to the first intersection 410 of the first piping 400 through the indoor throttling device 220 after being liquefied. The second part of the refrigerant flows into the tank coil 310 through the second branch pipe 102 and the second control valve 340 to be liquefied and released to generate hot water (i.e., hot water is generated by the first tank circuit), and flows from the first branch pipe 101 to the first intersection 410 of the first pipe 400 after being liquefied, and then joins the first part of the refrigerant.
The merged refrigerant flows through the first pipe 400 and the first on-off valve k1 to the outdoor heat exchanger 120, is gasified in the outdoor heat exchanger 120, flows to the first switch 150, and then flows from the C of the first switch 1501End into and from S1Finally, the water flows back to the compressor 110 through the gas-liquid separator 140 and the air return pipe 112 to be circulated again, so that the indoor environment is heated and hot water is prepared.
Referring to fig. 5, a combined cooling and cold water mode of the air conditioning system:
in the combined cooling and cold water mode, the first switch 150 is switched to the first state, the second switch 160 is switched to the third state, the first control valve 330 is closed, and the second control valve 340 is opened. The compressor 110 discharges the high-temperature and high-pressure refrigerant from the discharge pipe 111, and then discharges the refrigerant from the first discharge pipeD of the switch 1501End into and from C1The refrigerant flows out of the first pipe 400, enters the outdoor heat exchanger 120 through the first pipe 400, is liquefied, flows from the first switching valve k1 to the first intersection 410 of the first pipe 400, and is divided into two parts (a first part and a second part) at the first intersection 410. A first portion of the refrigerant enters the indoor heat exchanger 210, is subjected to evaporation cooling in the indoor heat exchanger 210, and enters the second intersection 510 where the refrigerant evaporated in the indoor heat exchanger 210 flows to the second piping 500; a second portion of the refrigerant enters the tank coil 310 through the first branch pipe 101 and the coil throttling device 320, evaporates to produce cold water, and flows from the second branch pipe 102 and the second control valve 340 to the second intersection 510 of the second pipe 500 after evaporation to join with the first portion of the refrigerant (i.e., the first tank circuit is used to produce cold water).
The merged refrigerant flows to the second switching unit 160 through the second pipe 500 and the second on/off valve k2, and then flows from E of the second switching unit 1602End into and from S2Finally, the cold water flows back to the compressor 110 through the gas-liquid separator 140 and the air return pipe 112 to be circulated again, so that the cold water is prepared while refrigeration is realized.
In addition to the above modes, the air conditioning system can realize the air conditioning function of cooling or heating alone when the water tank unit 300 is completely closed (e.g., the first control valve and the second control valve are closed), and thus, the detailed description is omitted.
In one embodiment, it is considered that the power is high and the power consumption is large in the mode of turning on the water tank unit 300, so that the load pressure to the power supply system is also large. Here, in order to reduce the energy consumption pressure of the air conditioning system, the opening of other heat exchangers (such as the closing of the indoor heat exchanger 210) may be reduced as much as possible. For example, the flow rate may be set to zero by the indoor throttle 220. However, it is difficult to avoid that a small amount of refrigerant enters the indoor heat exchanger 210 from the indoor throttling device 220, which reduces the amount of refrigerant in the tank loop and reduces the efficiency of making cold water or hot water.
Therefore, in order to solve the above problem, the air conditioning system further includes a third branch pipe 103 branched from the second pipe 500, the third branch pipe 103 connects the second pipe 500 and the indoor heat exchanger 210, and the third branch pipe 103 is provided with a third control valve 230. The third control valve 230 can control the on-off of the third branch pipe 103, thereby realizing the independent preparation of hot water or cold water. For example:
referring to fig. 6, the single hot water mode of the air conditioning system:
in the single hot water mode, the first switch 150 is switched to the second state, the second switch 160 is closed, the first control valve 330 is opened, the second control valve 340 is closed, and the indoor unit 200 is closed (e.g., closed by the indoor throttling device 220 or the third control valve 230). The compressor 110 discharges the high-temperature and high-pressure refrigerant from the discharge pipe 111, enters the tank coil 310 through the high-pressure piping 600 and the first control valve 330, liquefies and releases heat to produce hot water (i.e., produces hot water using the second tank circuit), flows from the first branch pipe 101 to the first cross point 410 of the first piping 400 after being liquefied, and since the indoor unit 200 is closed, the refrigerant enters the outdoor heat exchanger 120 through the first piping 400 and is evaporated in the outdoor heat exchanger 120, flows to the first switch 150, and then flows from the C of the first switch 1501End into and from S1Finally, the water flows out of the water tank and returns to the compressor 110 through the gas-liquid separator 140 and the air return pipe 112 for recycling, so that the hot water can be independently prepared.
Referring to fig. 7, the cooling water only mode of the air conditioning system:
in the single cooling water mode, the first switch 150 is switched to the first state, the second switch 160 is switched to the third state, the first control valve 330 is closed, the second control valve 340 is opened, and the indoor unit 200 is closed (e.g., closed by the indoor throttling device 220 or the third control valve 230). The compressor 110 discharges the high-temperature and high-pressure refrigerant from the discharge pipe 111, and then from the first switching unit 150D1End into and from C1The refrigerant flows out of the first pipe 400, enters the outdoor heat exchanger 120 through the first pipe 400, is liquefied, flows from the first switching valve k1 to the first intersection 410 of the first pipe 400, and enters the tank coil 310 through the first pipe 400 and flows into the tank coil 31 through the tank coil 31 when the indoor unit 200 is turned off0 (i.e., the first tank circuit is used to produce cold water), the evaporated refrigerant flows to the second switching device 160 through the second branch pipe 102, the second pipe 500, the second on-off valve k2, and then flows from the second switching device 160E2End into and from S2Finally, the cold water flows back to the compressor 110 through the gas-liquid separator 140 and the air return pipe 112 to be circulated again, so that cold water is separately prepared while refrigeration is realized.
It should be noted that, in the single hot water mode or the single cold water mode, when the indoor unit 200 is closed, the third control valve 230 may be closed and the indoor throttling device 220 may be also closed or adjusted to the minimum, so that leakage of the refrigerant in the first pipe 400 to the indoor heat exchanger 210 may be reduced, a sufficient amount of the refrigerant in the hot water making circuit may be ensured, and the hot water making efficiency may be further improved.
In any of the above operating modes, when the water tank unit is turned on, the coil throttling device 320 may be turned on to adjust the amount and flow rate of the refrigerant passing through the water tank coil 310. When the indoor unit 200 is turned on, the indoor throttle device 220 may be turned on to adjust the amount and flow rate of the refrigerant passing through the indoor heat exchanger 210. In the combined operation mode, the coil throttle device 320 and the indoor throttle device 220 may be opened simultaneously or at different times.
Based on any of the above embodiments, the indoor units 200 of the air conditioning system may include different heat exchangers, such as one or more of a common cooling/heating indoor unit (having only one heat exchanger and a corresponding throttling device), an indoor unit with a constant temperature dehumidification function (having both a dehumidification heat exchanger and a reheat heat exchanger 230), and an indoor unit with a switching device capable of freely switching cooling or heating states, so that the air conditioner can simultaneously perform hybrid operations of constant temperature dehumidification, cooling, heating, and the like.
Please refer to fig. 1: based on any of the above embodiments, in order to avoid the generation of unpleasant noise when the refrigerant in the vapor-liquid two-phase state passes through the indoor throttling device 220, the air conditioner further includes the economizer 130, the economizer 130 is disposed in the first pipe 400 between the outdoor heat exchanger 120 and the first intersection 410, and the return pipe 141 of the economizer 130 communicates with the gas-liquid separator 140. The return pipe 141 may have various forms, and the return pipe 141 may include only a return pipe body, or may include a return pipe body and a first connection pipe, one end of the first connection pipe is communicated with the return pipe body, and the other end of the first connection pipe is communicated with the gas-liquid separator 140.
The utility model discloses an adopt the system design who takes economic ware 130 on the basis of three-pipe system dehumidification reheating scheme, through the liquid choke valve (electronic expansion valve) of getting in the control band economic ware 130 system design return circuit, further reduce the refrigerant condensation temperature of outdoor heat exchanger 120 export, improve the super-cooled rate, make the refrigerant complete condensation be liquid, liquid refrigerant gets into indoor heat exchanger 210 heat absorption evaporation after indoor electronic expansion valve throttle step-down, when the refrigerant through indoor throttling arrangement 220 was full liquid, can solve the refrigerant abnormal sound that the two-phase attitude of gas-liquid produced.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (11)
1. An air conditioning system, characterized in that the air conditioning system comprises an outdoor unit, an indoor unit and a water tank unit; the outdoor unit comprises a compressor and an outdoor heat exchanger; the indoor unit comprises an indoor heat exchanger and an indoor throttling device; the water tank unit comprises a water tank coil pipe and a coil pipe throttling device;
the air conditioning system also comprises an exhaust pipe connected with the exhaust side of the compressor, an air return pipe connected with the air return side of the compressor, a first pipe sequentially connected with the exhaust pipe, the indoor throttling device and the indoor heat exchanger, and a second pipe connected with the indoor heat exchanger and the air return pipe, so that an indoor loop is formed;
the air conditioning system also comprises a first branch pipe and a second branch pipe, wherein the first branch pipe is branched from a first intersection point of the first distribution pipe, the second branch pipe is branched from the second distribution pipe, the first branch pipe is sequentially connected with the coil pipe throttling device, the water tank coil pipe and the second branch pipe so as to form a first water tank loop, and the first intersection point is positioned between the outdoor heat exchanger and the coil pipe throttling device;
the air conditioning system further comprises a high-pressure distribution pipe, one end of the high-pressure distribution pipe is connected with the exhaust pipe, the other end of the high-pressure distribution pipe is connected with the water tank coil pipe to form a second water tank loop, and the second water tank loop and the first water tank loop can be switched to use.
2. The air conditioning system of claim 1, further comprising a first control valve disposed in the high pressure piping.
3. The air conditioning system as claimed in claim 1, further comprising a second control valve provided to the second branch pipe.
4. The air conditioning system of claim 1, further comprising a first switch switchable between a first state and a second state, wherein:
in the first state, the first switch communicates the exhaust pipe with the first pipe;
in the second state, the first switch communicates the muffler with the first pipe.
5. The air conditioning system of claim 4, further comprising a second switch switchable between a third state and a fourth state, wherein:
in the third state, the second switch communicates the exhaust pipe with the second pipe;
in the fourth state, the second switch communicates the return pipe with the second pipe.
6. The air conditioning system as claimed in claim 5, wherein the first and/or second switch is a three-way valve or a four-way valve.
7. The air conditioning system as claimed in any one of claims 1 to 6, further comprising a first switching valve provided in the first pipe between the first intersection and the outdoor heat exchanger.
8. The air conditioning system according to any one of claims 1 to 6, further comprising a second switching valve provided on the second pipe.
9. The air conditioning system according to any one of claims 1 to 6, further comprising a third on/off valve provided in the high-pressure pipe.
10. The air conditioning system according to any one of claims 1 to 6, further comprising a third branch pipe branching from the second pipe, the third branch pipe connecting the second pipe and the indoor heat exchanger, the third branch pipe being provided with a third control valve.
11. The air conditioning system as claimed in any one of claims 1 to 6, further comprising an economizer provided on a first pipe between the outdoor heat exchanger and the first intersection, a return pipe of the economizer communicating with a return side of the compressor.
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| CN201921831694.8U CN210832381U (en) | 2019-10-28 | 2019-10-28 | Air conditioning system |
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| CN201921831694.8U CN210832381U (en) | 2019-10-28 | 2019-10-28 | Air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628848A (en) * | 2020-12-18 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628848A (en) * | 2020-12-18 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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