Air conditioning system with double-source outdoor unit

Abstract

The utility model provides an air-conditioning system with a double-source outdoor unit, which comprises an indoor unit, an outdoor unit, an outdoor unit and an outdoor unit, the air source outdoor unit system comprises a first compressor and an air source heat exchanger; the water source outdoor unit system comprises a second compressor and a water source heat exchanger, a first refrigerant heat exchange pipe and a first water heat exchange pipe are arranged in the water source heat exchanger, and the two ends of the first water heat exchange pipe are in circulating communication with the chilled water circulating system through a water inlet pipe and a water return pipe respectively; the air source outdoor unit system and the indoor heat exchanger form first refrigerant circulation, the water source outdoor unit system and the indoor heat exchanger form second refrigerant circulation, and the air conditioning system with the double-source outdoor unit can be switched between the first refrigerant circulation and the second refrigerant circulation. When heat recovered from the chilled water circulation system of the data machine room air conditioner cannot meet the heating requirement, the air conditioner system is controlled to be switched from the second refrigerant circulation to the first refrigerant circulation, and the heating requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to data computer room air conditioning system design technical field, concretely relates to a kind of air conditioning system with double-source outdoor unit. BACKGROUND

[0002] For some data computer room projects, in order to carry out cold and heat recovery, it is very suitable to use water source heat pump multi-connected machine, and the heat of data computer room is recovered through waterway, which is used for heating the non-data computer room area, which is a common energy-saving mode for data computer room in winter. However, with the gradual application of computer room cabinets in data computer rooms, the existing chilled water circulation system cannot recover enough heat, which causes the water source heat pump multi-connected machine to be unable to be used normally, and further causes the non-data computer room area to freeze due to the lack of air conditioning system. Based on the foregoing deficiencies of the prior art, the utility model is proposed. SUMMARY

[0003] One of the purposes of the utility model is to provide an air conditioning system with double-source outdoor unit, which can use air source outdoor unit system for heating when the water source heat recovery of water source heat pump outdoor unit system cannot meet the heating demand of non-data computer room area space, meet the heating demand of non-data computer room area space, and further avoid the freezing phenomenon of the space.

[0004] The utility model is to provide an air conditioning system with double-source outdoor unit, comprising:

[0005] Indoor unit, arranged in non-data computer room area space, the indoor unit comprises indoor heat exchanger;

[0006] Air source outdoor unit system, comprising first compressor and air source heat exchanger, wherein the air source heat exchanger is provided with air cooling component;

[0007] Water source outdoor unit system, comprising second compressor and water source heat exchanger, wherein the water source heat exchanger has first refrigerant heat exchange pipe and first water heat exchange pipe capable of forming heat exchange, and the two ends of the first water heat exchange pipe are respectively connected with the chilled water circulation system of data computer room air conditioner through water inlet pipe and water return pipe to form circulation communication;

[0008] The air source outdoor unit system can form first refrigerant circulation with the indoor heat exchanger, the water source outdoor unit system can form second refrigerant circulation with the indoor heat exchanger, and the air conditioning system with double-source outdoor unit can switch between the first refrigerant circulation and the second refrigerant circulation.

[0009] In some embodiments, the air conditioning system with double-source outdoor unit further comprises:

[0010] The flow path switching piece has a first switching state and a second switching state, when the flow path switching piece is in the first switching state, the air source outdoor unit system runs a first refrigerant cycle, when the flow path switching piece is in the second switching state, the air source outdoor unit system runs a second refrigerant cycle.

[0011] In some embodiments,

[0012] The flow path switching piece includes four on-off valves, each of which is connected in series on a refrigerant communication pipeline between the air source outdoor unit system and the indoor heat exchanger, and on a refrigerant communication pipeline between the water source outdoor unit system and the indoor heat exchanger.

[0013] In some embodiments,

[0014] The flow path switching piece is a two-position six-way valve.

[0015] In some embodiments,

[0016] The air source outdoor unit system further includes a first four-way valve, a first port of the first four-way valve is in communication with an exhaust port of the first compressor, a second port is in communication with the air source heat exchanger, a third port is in communication with a first gas-liquid separator connected to a suction port of the first compressor, and a fourth port is in communication with the flow path switching piece.

[0017] In some embodiments,

[0018] The water source outdoor unit system further includes a second four-way valve, a first port of the second four-way valve is in communication with an exhaust port of the second compressor, a second port is in communication with a first refrigerant heat exchange pipe of the water source heat exchanger, a third port is in communication with a second gas-liquid separator connected to a suction port of the second compressor, and a fourth port is in communication with the flow path switching piece.

[0019] In some embodiments,

[0020] The flow path switching piece is an electromagnetic control valve.

[0021] The air conditioning system with a double-source outdoor unit of the utility model: simultaneously has air source outdoor unit system and water source outdoor unit system, when the environmental temperature is lower and the heat recovered from the chilled water circulation system of the data center air conditioner of the water source heat exchanger cannot satisfy the heating demand of the non-data center area space, can control the air conditioning system to switch from the second refrigerant cycle to the first refrigerant cycle, thereby satisfying the use heating demand, effectively preventing the freezing phenomenon caused by the insufficient heat of the non-data center area. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the technical scheme of the embodiments of the present application clearer, the drawings of the embodiments will be briefly described below. It should be noted that the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them,

[0023] Figure 1 is a structural schematic view of an air conditioning system with double-source outdoor unit of an embodiment of the present application, and shows a case that the flow path switching member is a two-position six-way valve;

[0024] Figure 2 is a structural schematic view of an air conditioning system with double-source outdoor unit of another embodiment of the present application, and shows a case that the flow path switching member is four on-off valves.

[0025] In the drawings:

[0026] 1, air source outdoor unit system; 11, first compressor; 12, air source heat exchanger; 13, first four-way valve; 14, first gas-liquid separator; 15, air cooling component; 2, water source outdoor unit system; 21, second compressor; 22, water source heat exchanger; 221, water inlet pipe; 222, water return pipe; 23, second four-way valve; 24, second gas-liquid separator; 3, indoor unit; 31, indoor heat exchanger; 4, flow path switching member; 41, on-off valve.

[0027] In the drawings, the marks with the same last two digits correspond to the same elements. It should be noted that the elements in the drawings are schematic and not drawn to scale. DETAILED DESCRIPTION

[0028] In order to make the technical scheme of the embodiments of the present application clearer, the drawings of the embodiments will be briefly described below. It should be noted that the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them,

[0029] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this present application subject matter belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the specification and relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. As used herein, the statement that two or more parts are "connected" or "coupled" together will mean that the parts are joined together either directly or through one or more intermediate parts.

[0030] For ease of description, spatially relative terms, such as "upper", "lower", "left", "right", "front", "back", and the like, can be used herein for ease of description to describe one element's or feature's position as related to another element, feature, or det of a device depicted in the figures. For example, terms such as "above", "over", "upper", "up", "top", "positioned on", or "positioned on top" of can mean that a first element, such as a first structure, is present on a second element, such as a second structure, where intervening elements can or can not be present between the first and second elements. The term "contact" means that a first element, such as a first structure, is connected to a second element, such as a second structure, with or without other elements at the interface between the two elements. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then the elements described as "above" or "over" other elements or structures would then be oriented "below" or "under" the other elements or structures. Thus, the example term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0031] Referring to FIGS. 1-3, Figure 1 and Figure 2 According to an embodiment of the present application, an air conditioning system with a double-source outdoor unit is provided, comprising:

[0032] The indoor unit 3 is arranged in a non-data room area space (not shown in the figure) to be able to adjust the temperature of the non-data room area space, and it can be understood that the aforementioned non-data room area space is relative to the data room area space, and the corresponding cabinet air conditioner and water circulation air conditioning system are arranged in the data room area space. The indoor unit 3 comprises an indoor heat exchanger 31.

[0033] The air source outdoor unit system 1 comprises a first compressor 11 and an air source heat exchanger 12, wherein the air source heat exchanger 12 is provided with a fan cooling component 15, which can generally adopt an axial flow fan, and in some installation conditions, a centrifugal fan can also be adopted to change the flow direction of the heat exchange airflow entering and exiting the air source heat exchanger 12, thereby meeting the demand of space arrangement. The aforementioned air source heat exchanger 12 is a heat exchange component that forms forced heat exchange between the airflow driven by the external environment and the refrigerant in the air source heat exchanger 12.

[0034] The water source outdoor unit system 2 comprises a second compressor 21 and a water source heat exchanger 22, wherein the water source heat exchanger 22 is provided with a first refrigerant heat exchange pipe and a first water heat exchange pipe capable of forming heat exchange, and the two ends of the first water heat exchange pipe are respectively connected with the chilled water circulation system of the data center air conditioner through a water inlet pipe 221 and a water return pipe 222 to form circulation communication, that is, the heat exchange between the refrigerant in the first water cold heat exchange pipe and the chilled water in the first water heat exchange pipe in the water source heat exchanger 22 is realized, and then the heat recovery and utilization in the chilled water circulation system of the data center air conditioner is realized.

[0035] The air source outdoor unit system 1 can form a first refrigerant circulation with the indoor heat exchanger 31, the water source outdoor unit system 2 can form a second refrigerant circulation with the indoor heat exchanger 31, and the air conditioner system with double source outdoor units can switch between the first refrigerant circulation and the second refrigerant circulation, and it can be understood that the first refrigerant circulation and the second refrigerant circulation are both provided with corresponding throttling elements, which are relatively well-known technical features in the field of air conditioner design, and the present application does not show them in the corresponding drawings, and specifically, the aforementioned throttling elements can be provided in the corresponding outdoor unit system to reduce the operating noise caused by the indoor unit.

[0036] In the technical scheme, the air source outdoor unit system is added to the single source outdoor unit in the prior art, that is, the air conditioner system with only a water source heat exchanger, so that the air conditioner system in the present application forms an air conditioner system with double source outdoor units, and the air source outdoor unit system 1 and the water source outdoor unit system 2 can selectively form corresponding refrigerant circulations with the indoor unit 3 to achieve the purpose of temperature regulation of the non-data center area space, and specifically, the air conditioner system with double source outdoor units in the present application simultaneously has the air source outdoor unit system 1 and the water source outdoor unit system 2, and when the heat recovered from the chilled water circulation system of the data center air conditioner by the water source heat exchanger 22 cannot meet the heating demand of the non-data center area space in a low temperature environment, the air conditioner system can be controlled to switch from the second refrigerant circulation to the first refrigerant circulation, so as to meet the heating demand and effectively prevent the freezing phenomenon caused by insufficient heat in the non-data center area.

[0037] It can be understood that the air conditioner system with double source outdoor units further comprises a flow path switching member 4, and the flow path switching member 4 has a first switching state and a second switching state, when the flow path switching member 4 is in the first switching state, the air conditioner system with double source outdoor units operates the first refrigerant circulation, and when the flow path switching member 4 is in the second switching state, the air conditioner system with double source outdoor units operates the second refrigerant circulation.

[0038] In the technical scheme, the flow path switching member 4 is arranged to switch the states of the first refrigerant circulation and the second refrigerant circulation, which is beneficial to simplify the control design of the system.

[0039] In theory, any flow path switching member 4 capable of realizing the first switching state and the second switching state can be used. As a more preferred embodiment, as shown in Figure 2 the flow path switching member 4 includes four on-off valves 41, each of which is connected in series to the refrigerant communication pipeline between the air source outdoor unit system 1 and the indoor heat exchanger 31, and to the refrigerant communication pipeline between the water source outdoor unit system 2 and the indoor heat exchanger 31. Specifically, with the orientation shown in Figure 2 as a reference, when the first refrigerant cycle needs to be run, the first and second on-off valves 41 are controlled to be in the on state from left to right, and the third and fourth on-off valves 41 are controlled to be in the off state, which corresponds to the first switching state of the flow path switching member 4. When the second refrigerant cycle needs to be run, the first and second on-off valves 41 are controlled to be in the off state, and the third and fourth on-off valves 41 are controlled to be in the on state, which corresponds to the second switching state of the flow path switching member 4. In this technical solution, the four on-off valves 41 are connected in series on the corresponding refrigerant pipeline to achieve the switching purpose of the refrigerant flow path. Since the on-off valve 41 is a conventional on-off control component in the industry, it has a low price, which can significantly reduce the design and manufacturing cost of the air conditioning system. However, due to the large number of components in the pipeline layout and assembly, there are certain disadvantages.

[0040] In another preferred embodiment, as shown in Figure 1 the flow path switching member 4 is a two-position six-way valve, which specifically includes a valve body and a valve core (not shown and not referenced in the figure) in the valve body. As shown in Figure 1 each valve pipe is in communication with the corresponding component, and the valve core is provided with different flow channels. The valve core has Figure 1 left and right positions in the orientation shown. When the valve core is in the left position, the air source outdoor unit system 1 and the indoor unit 3 form the first refrigerant cycle, i.e., the two-position four-way valve is in the first switching state. When the valve core is in the right position, the water source outdoor unit system 2 and the indoor unit 3 form the second refrigerant cycle, i.e., the two-position four-way valve is in the second switching state. In this technical solution, a two-position four-way valve is used as the flow path switching member 4, which has a compact structure and is easy to assemble.

[0041] In some embodiments, the air source outdoor unit system 1 further includes a first four-way valve 13, the first port of the first four-way valve 13 is in communication with the exhaust port of the first compressor 11, the second port is in communication with the air source heat exchanger 12, the third port is in communication with the first gas-liquid separator 14 connected to the suction port of the first compressor 11, and the fourth port is in communication with the flow path switching member 4. Specifically, as shown in Figure 1As shown, by setting the first four-way valve 13 in the air source outdoor unit system, the air source outdoor unit system can have both cooling and heating (i.e. heating) dual modes, so that the cooling or heating of the non-data room area space can be realized by switching the flow path of the first four-way valve 13, meeting the needs of users. Specifically, when the first refrigerant cycle is in the heating mode, at this time, the first port and the fourth port of the first four-way valve 13 are communicated, and the second port and the third port are communicated. The high-temperature and high-pressure refrigerant of the first compressor 11 enters the indoor heat exchanger 31 through the first four-way valve 13, exchanges heat with the air in the non-data room area space, and then flows back to the first compressor 11 through the first four-way valve 13, thereby completing a heating cycle and realizing heating of the non-data room area space. When the first refrigerant cycle is in the cooling mode, at this time, the first port and the second port of the first four-way valve 13 are communicated, and the third port and the fourth port are communicated. The high-temperature and high-pressure refrigerant of the first compressor 11 enters the air source heat exchanger 12 through the first four-way valve 13, is cooled, then enters the indoor heat exchanger 31, exchanges heat with the air in the non-data room area space, and then flows back to the first compressor 11 through the first four-way valve 13, thereby completing a cooling cycle and realizing cooling of the non-data room area space.

[0042] In another embodiment, the water source outdoor unit system 2 further comprises a second four-way valve 23. The first port of the second four-way valve 23 is communicated with the exhaust port of the second compressor 21, the second port is communicated with the first refrigerant heat exchange pipe of the water source heat exchanger 22, the third port is communicated with the second gas-liquid separator 24 connected to the suction port of the second compressor 21, and the fourth port is communicated with the flow path switching piece 4. At this time, the water source outdoor unit system 2 also has a cooling and heating dual mode, and the flow direction of the second refrigerant cycle in the cooling and heating mode is similar to that of the air source outdoor unit system 1, which will not be described herein. When the first port and the second port of the second four-way valve 23 are communicated, and the third port and the fourth port are communicated, it corresponds to the cooling cycle of the second refrigerant cycle, and when the first port and the fourth port of the second four-way valve 23 are communicated, and the second port and the third port are communicated, it corresponds to the heating cycle of the second refrigerant cycle.

[0043] The state switching of the aforementioned flow path switching piece 4 can be manually controlled, at this time, the flow path switching piece 4 needs to be manually switched according to the actual environmental temperature, and as a relatively preferred implementation, the aforementioned flow path switching piece 4 is an electromagnetic control valve piece, at this time, the corresponding control component can obtain the corresponding signal and form the corresponding control instruction to control the state switching of the flow path switching piece 4, thereby improving the degree of automation control of the air conditioning system.

[0044] The aforementioned indoor unit 3 can be provided with multiple parallel indoor units, so that the air conditioning system with dual source outdoor units of the present application becomes a multi-connected air conditioning system.

[0045] The embodiments of the present application are described in detail above, but apparently, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. The protection scope of the present application is defined by the appended claims.

Claims

1. An air conditioning system having a dual source outdoor unit, characterized by, Comprise: Indoor unit (3) is arranged in the non-data room area space, the indoor unit (3) includes indoor heat exchanger (31); Air source outdoor unit system (1) includes first compressor (11) and air source heat exchanger (12), wherein the air source heat exchanger (12) is configured with air-cooled component (15); Water source outdoor unit system (2) includes second compressor (21) and water source heat exchanger (22), wherein the water source heat exchanger (22) has first refrigerant heat exchange pipe and first water heat exchange pipe capable of forming heat exchange, the two ends of the first water heat exchange pipe are respectively connected with chilled water circulation system of data room air conditioner through water inlet pipe (221) and return water pipe (222) to form circulation communication; The air source outdoor unit system (1) can form first refrigerant circulation with the indoor heat exchanger (31), the water source outdoor unit system (2) can form second refrigerant circulation with the indoor heat exchanger (31), and the air conditioner system with double source outdoor units can switch between the first refrigerant circulation and the second refrigerant circulation.

2. The air conditioning system having a dual source outdoor unit according to claim 1, wherein, Further comprise: Flow path switching piece (4), the flow path switching piece (4) has first switching state and second switching state, when the flow path switching piece (4) is in the first switching state, the air conditioner system with double source outdoor units runs first refrigerant circulation, when the flow path switching piece (4) is in the second switching state, the air conditioner system with double source outdoor units runs second refrigerant circulation.

3. The air conditioner system with double source outdoor units according to claim 2, wherein The flow path switching piece (4) includes four on-off valves (41), each of the on-off valves (41) is respectively connected in series on refrigerant communication pipeline between the air source outdoor unit system (1) and the indoor heat exchanger (31), and on refrigerant communication pipeline between the water source outdoor unit system (2) and the indoor heat exchanger (31).

4. The air conditioner system with double source outdoor units according to claim 2, wherein The flow path switching piece (4) is a two-position six-way valve.

5. The air conditioner system with double source outdoor units according to claim 2, wherein The air source outdoor unit system (1) further includes first four-way valve (13), the first port of the first four-way valve (13) is communicated with the exhaust port of the first compressor (11), the second port is communicated with the air source heat exchanger (12), the third port is communicated with the first gas-liquid separator (14) connected with the suction port of the first compressor (11), and the fourth port is communicated with the flow path switching piece (4).

6. The air conditioner system with double source outdoor units according to claim 2, wherein The water source outdoor unit system (2) further includes second four-way valve (23), the first port of the second four-way valve (23) is communicated with the exhaust port of the second compressor (21), the second port is communicated with the first refrigerant heat exchange pipe of the water source heat exchanger (22), the third port is communicated with the second gas-liquid separator (24) connected with the suction port of the second compressor (21), and the fourth port is communicated with the flow path switching piece (4).

7. The air conditioning system having a dual source outdoor unit according to claim 2, wherein the flow path switching member (4) is an electromagnetic control valve member.

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