Air conditioning unit

Abstract

The utility model relates to the technical field of multi-split air conditioners, and discloses an air conditioning unit which comprises a plurality of air conditioning units, each air conditioning unit comprises a compressor, an outdoor heat exchanger and one or more indoor heat exchangers, and the compressor, the outdoor heat exchanger and the indoor heat exchangers are connected through refrigerant pipelines to form an independent refrigerant circulation loop; the external energy supply module comprises an outdoor side heat exchange part and an indoor side heat exchange part; wherein the outdoor side heat exchange part is connected with outdoor heat exchangers of one or more air conditioner units in parallel, and the indoor side heat exchange part is connected with indoor side heat exchangers of one or more air conditioner units in parallel; and the external energy supply module can be connected with an external cold source / heat source so as to supply cold or heat to one or more air conditioner units through the outdoor side heat exchange part / the indoor side heat exchange part. According to the embodiment of the invention, the energy supply flow path is constructed through the external energy supply module, the external cold source / heat source can be utilized to supplement cold / heat in the refrigerating / heating process to the air conditioning unit, and the energy-saving performance of operation of the air conditioning unit is improved.

Description

Technical Field

[0001] The present application relates to the technical field of multi-split air conditioners, for example, to an air conditioning unit. Background Art

[0002] With the acceleration of urbanization, multi-split central air conditioners are gaining more and more attention as air conditioning units suitable for large public buildings. Multi-split central air conditioners are suitable for commercial buildings such as shopping malls, office buildings and hotel apartments. The system distributes cold air to different areas of the entire building through centralized cooling units. Compared with conventional single air conditioner types, it has the advantages of high efficiency, energy saving and easy maintenance.

[0003] Taking office buildings as an example, each office building or each floor of an office building is generally equipped with a separate set of central air-conditioning units. The system includes an outdoor unit and one or more indoor units. The outdoor unit is used to exchange heat with the outdoor environment, and each indoor unit is used to exchange heat with its corresponding indoor space. In the summer cooling season, the system can transport cold air to different partitioned spaces in the building through refrigerant, and also discharge the internal heat of the floor to the environment outside the building; similarly, in the winter heating season, the system transports heat into the building and discharges the cold air in the building to the outside.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In addition to operational stability, energy efficiency is also an important indicator for commercial building air conditioning. Most existing multi-split central air conditioners are completely powered by electricity to achieve heat exchange between indoor and outdoor areas, which consumes a lot of power and has high operating costs.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides an air conditioning unit to solve the technical problem of high power consumption of existing building cooling and heating systems.

[0009] According to an embodiment of the first aspect of the present application, there is provided an air conditioning unit, comprising:

[0010] A plurality of air conditioning units, each of which includes a compressor, an outdoor heat exchanger, and one or more indoor heat exchangers, and each of which is connected to an independent refrigerant circulation loop via a refrigerant pipeline;

[0011] An external energy supply module includes an outdoor heat exchange part and an indoor heat exchange part; wherein the outdoor heat exchange part is connected in parallel with the outdoor heat exchanger of one or more air-conditioning units, and the indoor heat exchange part is connected in parallel with the indoor heat exchanger of one or more air-conditioning units; and the external energy supply module can be connected to an external cold source / heat source to supply cooling or heating to one or more air-conditioning units through the outdoor heat exchange part / indoor heat exchange part.

[0012] In this embodiment, an energy supply flow path between an external cold source / heat source and multiple air-conditioning units is constructed through an external energy supply module. The external cold source / heat source can be used to supplement the cold / heat in the cooling / heating process to the air-conditioning unit, thereby improving the energy efficiency of the air-conditioning unit operation.

[0013] In some optional embodiments, the air conditioning unit further includes a first outdoor common pipeline and a second outdoor common pipeline;

[0014] The external energy supply module further includes a first outdoor energy supply pipeline and a second outdoor energy supply pipeline which are connected to the outdoor heat exchange part, and the first outdoor energy supply pipeline is connected to the first outdoor common pipeline, and the second outdoor energy supply pipeline is connected to the second outdoor common pipeline; and,

[0015] The air conditioning unit further includes a first outdoor external pipe and a second outdoor external pipe connected to the outdoor heat exchanger, wherein the first outdoor external pipe is connected to the first outdoor common pipe, and the second outdoor external pipe is connected to the second outdoor common pipe;

[0016] Among them, the outdoor heat exchanger of the air-conditioning unit and the outdoor heat exchange part of the external energy supply module are connected to form an outdoor energy supply circulation loop through the first outdoor common pipeline, the second outdoor common pipeline, the first outdoor energy supply pipeline, the second outdoor energy supply pipeline, the first outdoor external pipeline and the second outdoor external pipeline.

[0017] In this embodiment, multiple air-conditioning units can be connected in parallel with the outdoor common pipeline to form an outdoor energy supply circulation loop with the external energy supply module, so that the outdoor heat exchanger of each air-conditioning unit can supply energy and exchange heat with the external energy supply module, and the interference between the air-conditioning units is relatively low.

[0018] In some optional embodiments, the external energy supply module further includes a first energy supply valve, which is arranged on the first outdoor energy supply pipeline or the second outdoor energy supply pipeline, and is used to control the on-off state of the first outdoor energy supply pipeline or the second outdoor energy supply pipeline;

[0019] And / or, the air conditioning unit further includes an outdoor valve, which is arranged on the first outdoor external pipe or the second outdoor external pipe and is used to control the on / off state of the first outdoor external pipe or the second outdoor external pipe.

[0020] In this embodiment, by setting an energy supply valve on the outdoor energy supply pipeline, unified on-off control of the energy supply can be achieved through the energy supply valve; and by setting an outdoor valve on the outdoor connecting pipeline, individual on-off control of the energy supply flow path of a single air-conditioning unit can be achieved through the outdoor valve.

[0021] In some optional embodiments, the air conditioning unit further comprises:

[0022] An outdoor liquid pump module, connected to the first outdoor common pipeline or the second outdoor common pipeline, is used to provide pumping power for the heat transfer medium in the outdoor energy supply circulation loop; and / or,

[0023] The outdoor energy storage box is connected to the first outdoor common pipeline or the second outdoor common pipeline, and is used to store heat transfer medium.

[0024] This embodiment can achieve effective control of the heat transfer medium transportation efficiency through the outdoor liquid pump module, and can use the outdoor energy storage tank to store additional cold / heat, thereby increasing the energy storage capacity.

[0025] In some optional embodiments, the air conditioning unit further includes a first indoor common pipeline and a second indoor common pipeline;

[0026] The external energy supply module also includes a first indoor energy supply pipeline and a second indoor energy supply pipeline connected to the indoor heat exchange part, and the first indoor energy supply pipeline is connected to the first indoor common pipeline, and the second indoor energy supply pipeline is connected to the second indoor common pipeline; and,

[0027] The air conditioning unit further includes a first indoor-outdoor pipeline and a second indoor-outdoor pipeline connected to the indoor heat exchanger, wherein the first indoor-outdoor pipeline is connected to the first indoor common pipeline, and the second indoor-outdoor pipeline is connected to the second indoor common pipeline;

[0028] Among them, the indoor heat exchanger of the air-conditioning unit and the indoor heat exchange part of the external energy supply module form an indoor energy supply circulation loop through the first indoor common pipeline, the second indoor common pipeline, the first indoor energy supply pipeline, the second indoor energy supply pipeline, the first indoor and outdoor connecting pipeline and the second indoor and outdoor connecting pipeline.

[0029] In this embodiment, multiple air-conditioning units can be connected in parallel with the indoor common pipeline to form an indoor energy supply circulation loop with the external energy supply module, so that the indoor heat exchanger of each air-conditioning unit can supply energy and exchange heat with the external energy supply module, and the interference between the air-conditioning units is relatively low.

[0030] In some optional embodiments, the external energy supply module further includes a second energy supply valve, which is disposed on the first indoor energy supply pipeline or the second indoor energy supply pipeline, and is used to control the on-off state of the first indoor energy supply pipeline or the second indoor energy supply pipeline;

[0031] And / or, the air conditioning unit further includes an indoor valve, which is arranged on the first indoor-outdoor piping line or the second indoor-outdoor piping line, and is used to control the on-off state of the first indoor-outdoor piping line or the second indoor-outdoor piping line.

[0032] In this embodiment, by setting an energy supply valve on the indoor energy supply pipeline, unified on-off control of the energy supply can be achieved through the energy supply valve; and by setting an indoor valve on the indoor connecting pipeline, individual on-off control of the energy supply flow path of a single air-conditioning unit can be achieved through the indoor valve.

[0033] In some optional embodiments, the air conditioning unit further comprises:

[0034] An indoor liquid pump module, connected to the first indoor common pipeline or the second indoor common pipeline, is used to provide pumping power for the heat transfer medium in the indoor energy supply circulation loop; and / or,

[0035] The indoor energy storage box is connected to the first indoor common pipeline or the second indoor common pipeline, and is used to store heat transfer medium.

[0036] This embodiment can achieve effective control of the heat transfer medium delivery efficiency through the indoor liquid pump module, and utilize the indoor energy storage tank to store additional cold / heat, thereby improving the energy storage capacity.

[0037] In some optional embodiments, the external energy supply module further includes:

[0038] A cold source external pipeline and a cold source valve, wherein the cold source external pipeline is used to connect an external cold source, and the cold source valve is arranged on the cold source external pipeline to control the on / off state of the cold source external pipeline; and / or,

[0039] The heat source external pipeline and the heat source valve, the heat source external pipeline is used to connect the external heat source, and the heat source valve is arranged on the heat source external pipeline to control the on-off state of the heat source external pipeline.

[0040] In this embodiment, the cold source external pipeline and the cold source valve can be used to realize the on-off control of the external cold source input, and the heat source external pipeline and the heat source valve can be used to realize the on-off control of the external heat source input.

[0041] In some optional embodiments, the air conditioning unit further comprises:

[0042] The intermediate heat exchange module includes an intermediate heat exchange part which is respectively connected to the outdoor heat exchanger and the indoor heat exchanger of one or more air-conditioning units, and is used to enable the outdoor heat exchanger and the indoor heat exchanger of one or more air-conditioning units to perform heat exchange in a controlled manner in the intermediate heat exchange part.

[0043] In this embodiment, the air conditioning unit is additionally provided with an intermediate heat exchange module, and the pipelines where the outdoor heat exchanger and the indoor heat exchanger are located can directly exchange heat through the intermediate heat exchange module, thereby meeting the heat transfer requirements under special working conditions such as defrosting of the outdoor unit.

[0044] In some optional embodiments, the indoor heat exchanger and / or the outdoor heat exchanger is a three-medium heat exchanger, which has a refrigerant heat exchange pipe section, a heat transfer medium heat exchange pipe section and an air channel, and is configured to enable heat exchange between any two or three of the refrigerant heat exchange pipe section, the heat transfer medium heat exchange pipe section and the air channel.

[0045] This embodiment adopts a three-medium heat exchanger type, and a single heat exchanger can be used to achieve heat exchange among air, refrigerant and heat transfer medium. Compared with the two-medium heat exchanger in conventional technology, this embodiment can effectively reduce the number of heat exchangers used in the air-conditioning unit to achieve heat exchange among three media, thereby reducing production costs.

[0046] The air conditioning unit provided by the embodiment of the present disclosure can achieve the following technical effects:

[0047] The air-conditioning unit provided in the embodiment of the present disclosure can utilize an external energy supply module to centrally and uniformly supplement the cooling / heat supply to multiple air-conditioning units, thereby effectively reducing the power consumption during the operation of the air-conditioning unit, reducing the operating cost of the air-conditioning unit, and improving energy utilization efficiency.

[0048] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0050] Figure 1 is a schematic diagram of an air conditioning unit provided by an embodiment of the present disclosure;

[0051] Figure 2 is a schematic diagram of another air conditioning unit provided by an embodiment of the present disclosure;

[0052] Figure 3 is a schematic diagram of another air conditioning unit provided by an embodiment of the present disclosure;

[0053] Figure 4 It is a schematic diagram of another air conditioning unit provided in an embodiment of the present disclosure.

[0054] Reference numerals:

[0055] 100, air conditioning unit; 110, indoor heat exchanger; 120, outdoor heat exchanger; 130, compressor; 140, four-way valve; 151, first outdoor external pipe; 152, second outdoor external pipe; 161, first indoor and outdoor pipe; 162, second indoor and outdoor pipe; 171, outdoor valve; 172, indoor valve; 181, radiation heat exchanger; 182, radiation valve;

[0056] 200, external energy supply module; 211, first outdoor energy supply pipeline; 212, second outdoor energy supply pipeline; 221, first indoor energy supply pipeline; 222, second indoor energy supply pipeline; 231, first energy supply valve; 232, second energy supply valve;

[0057] 300, intermediate heat exchange module; 311, first outdoor intermediate pipeline; 312, second outdoor intermediate pipeline; 321, first indoor intermediate pipeline; 322, second indoor intermediate pipeline; 331, first intermediate valve; 332, second intermediate valve;

[0058] 411, first outdoor common pipeline; 412, second outdoor common pipeline; 421, first indoor common pipeline; 422, second indoor common pipeline;

[0059] 510, outdoor liquid pump module; 520, indoor liquid pump module;

[0060] 610, outdoor energy storage box; 620, indoor energy storage box;

[0061] 711, cold source external pipeline; 712, cold source valve; 721, heat source external pipeline; 722, heat source valve. DETAILED DESCRIPTION

[0062] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0063] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0064] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0065] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0066] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0067] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0068] Combination Figures 1 to 4 As shown, in some optional embodiments, the air conditioning unit mainly includes an air conditioning unit 100 and an external energy supply module 200. The air conditioning unit 100 is mainly used to realize the function of cooling or heating the indoor environment through the indoor unit and other components. The external energy supply module 200 is mainly used to transfer cold / heat to the heat exchanger of each air conditioning unit 100 by performing heat exchange with the heat exchanger of the air conditioning unit 100.

[0069] The air-conditioning unit of the present application can utilize an external energy supply module 200 to centrally and uniformly supply energy to multiple air-conditioning units 100, thereby effectively reducing power consumption during the operation of the air-conditioning unit, reducing the operating cost of the air-conditioning unit, and improving energy utilization efficiency.

[0070] In some optional embodiments, the number of the air conditioning unit 100 is one or more, such as Figure 1 The number of air conditioning units 100 shown is two, and the two air conditioning units 100 can be used to cool or heat different floors of the same building or different buildings. Each air conditioning unit 100 mainly includes a compressor 130, an outdoor heat exchanger 120, one or more indoor heat exchangers 110, a throttling device, a four-way valve 140, etc.

[0071] Here, the air-conditioning unit 100 is composed of two parts: an indoor unit and an outdoor unit. The indoor unit is arranged on the indoor side, and the indoor heat exchanger 110 is arranged in the indoor unit, which is used to exchange heat between the refrigerant and the indoor environment to absorb indoor heat for cooling or release heat for heating; the outdoor unit is arranged on the outdoor side, and components such as a compressor 130, an outdoor heat exchanger 120 and a four-way valve 140 are arranged in the outdoor unit.

[0072] The multiple components of the air conditioning unit 100 are connected by refrigerant pipelines and are constructed into a refrigerant circulation loop filled with refrigerant. The refrigerant can circulate along the refrigerant circulation loop to achieve heat transfer between the indoor side and the outdoor side.

[0073] The embodiments of the present disclosure and the following text are described by taking a "one-to-many" air conditioner as an example, wherein the indoor unit has multiple indoor heat exchangers 110, such as Figure 1 The air conditioning unit 100 shown is provided with two indoor heat exchangers 110, which are connected in parallel and each parallel branch is provided with a switching valve, which can be used to control the on / off state of each parallel branch, and further control the specific activated indoor heat exchanger 110.

[0074] In some optional embodiments, such as Figure 1 As shown, the external energy supply module 200 includes an outdoor heat exchange unit and an indoor heat exchange unit. The outdoor heat exchange unit can be used to exchange heat between the external cold source / heat source and the outdoor heat exchanger 120 of the air conditioning unit 100, and the indoor heat exchange unit can be used to exchange heat between the external cold source / heat source and the indoor heat exchanger 110 of the air conditioning unit 100.

[0075] In this embodiment, an energy supply flow path between an external cold source / heat source and multiple air-conditioning units 100 is constructed through an external energy supply module 200. The external cold source / heat source can be used to supplement the cold or heat in the cooling / heating process to the air-conditioning unit 100, thereby improving the energy efficiency of the air-conditioning unit operation.

[0076] In an embodiment, the outdoor heat exchange part is connected in parallel with the outdoor heat exchanger 120 of one or more air-conditioning units 100, which can enable a single air-conditioning unit 100 to exchange heat with an external cold source / heat source, and can also satisfy the heat exchange of multiple air-conditioning units 100 with an external cold source / heat source at the same time, thereby meeting the energy supply demand in scenarios with different numbers of indoor units turned on.

[0077] Specifically, the air-conditioning unit includes a first outdoor common pipeline 411 and a second outdoor common pipeline 412, and the external energy supply module 200 also includes a first outdoor energy supply pipeline 211 and a second outdoor energy supply pipeline 212 connected to the outdoor heat exchange part, and the first outdoor energy supply pipeline 211 is connected to the first outdoor common pipeline 411, and the second outdoor energy supply pipeline 212 is connected to the second outdoor common pipeline 412, so the first outdoor energy supply pipeline 211 and the first outdoor common pipeline 411 can be used as the heat transfer medium output flow path of the outdoor heat exchange part, and the second outdoor energy supply pipeline 212 and the second outdoor common pipeline 412 can be used as the heat transfer medium return flow path of the outdoor heat exchange part, so as to be able to continuously circulate the output and return heat transfer medium.

[0078] At the same time, each air conditioning unit 100 also includes a first outdoor external pipe 151 and a second outdoor external pipe 152 connected to the outdoor heat exchanger 120. Among them, the first outdoor external pipe 151 can be used as a flow path for the heat transfer medium to enter the outdoor heat exchanger 120, and the second outdoor external pipe 152 can be used as a flow path for the heat transfer medium to exit the outdoor heat exchanger 120. Here, the first outdoor external pipe 151 is connected to the first outdoor common pipe 411, and the second outdoor external pipe 152 is connected to the second outdoor common pipe 412, so that the outdoor heat exchanger 120 of the air conditioning unit 100 and the outdoor heat exchange part of the external energy supply module 200 are constructed with an outdoor energy supply circulation loop through the first outdoor common pipe 411, the second outdoor common pipe 412, the first outdoor energy supply pipe 211, the second outdoor energy supply pipe 212, the first outdoor external pipe 151 and the second outdoor external pipe 152.

[0079] In the connection form defined by the above outdoor energy supply circulation loop, the flow direction of the heat transfer medium is: outdoor heat exchange part → first outdoor energy supply pipeline 211 → first outdoor common pipeline 411 → first outdoor external pipeline 151 → outdoor heat exchanger 120 → second outdoor external pipeline 152 → second outdoor common pipeline 412 → second outdoor energy supply pipeline 212 → outdoor heat exchange part. Of course, the outdoor energy supply circulation loop can also transport the heat transfer medium in the direction opposite to the above flow direction, and this application does not limit this.

[0080] Here, the external energy supply module 200 has one or more groups of outdoor parallel ports, each group of outdoor parallel ports includes a first outdoor parallel port opened on the first outdoor common pipeline 411, and a second outdoor parallel port opened on the second outdoor common pipeline 412. The first outdoor parallel port is used to communicate with the first outdoor external pipeline 151, and the second outdoor parallel port is used to communicate with the second outdoor external pipeline 152 of the same air-conditioning unit 100. In this way, the outdoor common pipeline and multiple air-conditioning units 100 can be connected in parallel through the above-mentioned multiple groups of outdoor parallel ports.

[0081] In this embodiment, multiple air-conditioning units 100 are connected in parallel with outdoor common pipelines, so that multiple air-conditioning units 100 can be connected to the same group of outdoor common pipelines, effectively reducing the number of pipelines required to build a loop, and the interference between the air-conditioning units 100 is relatively low.

[0082] In some optional embodiments, the external energy supply module 200 further includes a first energy supply valve 231. The first energy supply valve 231 is disposed on the first outdoor energy supply pipeline 211 or the second outdoor energy supply pipeline 212, and is used to control the on / off state of the first outdoor energy supply pipeline 211 or the second outdoor energy supply pipeline 212.

[0083] In this way, when the first energy supply valve 231 is in a closed state, the first outdoor energy supply pipeline 211 (or the second outdoor energy supply pipeline 212) is in a blocked state, thereby simultaneously stopping the heat transfer medium transportation between the outdoor heat exchange part and the outdoor heat exchangers 120 of all air-conditioning units 100. And, when the first energy supply valve 231 is in an open state, the first outdoor energy supply pipeline 211 (or the second outdoor energy supply pipeline 212) is in a conducting state, thereby simultaneously starting the heat transfer medium transportation between the outdoor heat exchange part and the outdoor heat exchangers 120 of all air-conditioning units 100. Therefore, the energy supply valve and its arrangement provided in the embodiment of the present disclosure can realize the unified on-off control of energy supply.

[0084] In some optional embodiments, the air conditioning unit 100 further includes an outdoor valve 171. The outdoor valve 171 is disposed on the first outdoor external pipe 151 or the second outdoor external pipe 152, and is used to control the on / off state of the first outdoor external pipe 151 or the second outdoor external pipe 152.

[0085] Taking one of the air-conditioning units 100 as an example, after the corresponding outdoor valve 171 is closed, the first outdoor external pipeline 151 (or the second outdoor external pipeline 152) is blocked by the outdoor valve 171, thereby stopping the heat transfer medium transportation between the outdoor heat exchanger 120 of the air-conditioning unit 100 and the outdoor heat exchange part of the external energy supply module 200, while other air-conditioning units 100 can still transport the heat transfer medium normally. And, after the outdoor valve 171 is opened, the first outdoor external pipeline 151 (or the second outdoor external pipeline 152) is conducted, and the outdoor heat exchanger 120 of the air-conditioning unit 100 can resume the heat transfer medium transportation with the outdoor heat exchange part. In this way, the outdoor valve 171 and its arrangement provided in the embodiment of the present disclosure can have the function of on-off control of the energy supply flow path of a single air-conditioning unit 100.

[0086] In some other optional embodiments, the air conditioning unit further includes an outdoor liquid pump module 510. The liquid pump module is connected to the first outdoor common pipeline 411 or the second outdoor common pipeline 412, and is used to provide pumping power for the heat transfer medium in the outdoor energy supply circulation loop.

[0087] Specifically, the outdoor liquid pump module 510 includes a liquid pump, which is connected in series to the first outdoor common pipeline 411 or the second outdoor common pipeline 412 to drive the heat transfer medium to circulate along the outdoor energy supply circulation loop defined above.

[0088] Optionally, the outdoor liquid pump module 510 further includes one or more of the following components: an outdoor filter and an outdoor expansion tank.

[0089] The outdoor filter is configured to filter out impurities from the heat transfer medium flowing through the outdoor energy supply circulation loop; optionally, the outdoor filter is arranged on the liquid inlet side pipeline of the aforementioned liquid pump to filter and purify the heat transfer medium before it flows into the liquid pump. Also, the outdoor expansion tank is configured to provide a variable volume space for the volume change caused by the change in the temperature of the heat transfer medium in the outdoor energy supply circulation loop, thereby reducing the squeezing force of the volume change of the heat transfer medium on the relevant components of the outdoor energy supply circulation loop.

[0090] In some other optional embodiments, Figure 2 As shown, the air conditioning unit further includes an outdoor energy storage box 610, which is connected to the first outdoor common pipeline 411 or the second outdoor common pipeline 412 and is used to store heat transfer medium.

[0091] Here, the outdoor energy storage box 610 is connected in series to the outdoor energy supply circulation loop, and the outdoor energy storage box 610 can store heat / cold in the form of storing heat transfer medium. In this embodiment, the box body of the outdoor energy storage box 610 is made of heat-insulating or low-thermal-conductivity materials, or a heat-insulating layer is provided on the inner and outer walls of the box body to reduce the heat exchange between the environment where the outdoor energy storage box 610 is located and the heat transfer medium inside the outdoor energy storage box 610, thereby being able to store cold / heat for a longer period of time.

[0092] In this way, this embodiment can not only utilize the external energy supply module 200 to transfer cold and heat to the air-conditioning unit 100, but also utilize the outdoor energy storage box 610 to store part of the cold / heat and transfer this part of energy to the air-conditioning unit 100 when needed, thereby effectively improving the reserve amount of cold and heat.

[0093] In some embodiments, similar to the outdoor energy supply cycle shown in the previous embodiment, Figure 1 As shown, the indoor heat exchange part is connected in parallel with the indoor heat exchanger of one or more air-conditioning units 100. The outdoor heat exchange part can simultaneously meet the application scenario requirements of heat exchange between the external cold source / heat source and the indoor heat exchanger 110 of a single air-conditioning unit 100, or heat exchange with the indoor heat exchangers 110 of multiple air-conditioning units 100 at the same time.

[0094] Specifically, the air conditioning unit further includes a first indoor common pipeline 421 and an indoor and outdoor common pipeline, and the external energy supply module 200 further includes a first indoor energy supply pipeline 221 and a second indoor energy supply pipeline 222 which are connected to the indoor heat exchange unit. The first indoor energy supply pipeline 221 is connected to the first indoor common pipeline 421, and the second indoor energy supply pipeline 222 is connected to the second indoor common pipeline 422, so that the first indoor energy supply pipeline 221 and the first indoor common pipeline 421 are used as the heat transfer medium output flow path of the indoor heat exchange unit, and the second outdoor energy supply pipeline 212 and the second outdoor common pipeline 412 are used as the heat transfer medium return flow path of the indoor heat exchange unit, thereby realizing the output and return of the heat transfer medium that continuously circulates on the indoor side.

[0095] At the same time, each air conditioning unit 100 also includes a first indoor-outdoor pipe 161 and a second indoor-outdoor pipe 162 connected to the indoor heat exchanger 110. The first indoor-outdoor pipe 161 is a flow path for inputting the heat transfer medium into the indoor heat exchanger 110, and the second indoor-outdoor pipe 162 is a flow path for outputting the heat transfer medium from the indoor heat exchanger 110. Here, the first indoor-outdoor pipe 161 is connected in parallel to the first indoor common pipe 421, and the second indoor-outdoor pipe 162 is connected in parallel to the second indoor common pipe 422, so that the indoor heat exchanger 110 and the indoor heat exchange part of the external energy supply module 200 can also construct an indoor energy supply circulation loop through the above-mentioned pipes.

[0096] In the connection form defined by the above-mentioned indoor energy supply circulation loop, the flow direction of the heat transfer medium is: indoor side heat exchange part → first indoor energy supply pipeline 221 → first indoor common pipeline 421 → first indoor and outdoor pipeline 161 → indoor heat exchanger 110 → second indoor and outdoor pipeline 162 → second indoor common pipeline 422 → second indoor energy supply pipeline 222 → indoor side heat exchange part. Similarly, in this embodiment, the heat transfer medium can also be transported along the opposite flow direction to the above, and this application does not limit this.

[0097] In some optional embodiments, the external energy supply module 200 further includes a second energy supply valve 232, which is disposed on the first indoor energy supply pipeline 221 or the second indoor energy supply pipeline 222, and is used to control the on / off state of the first indoor energy supply pipeline 221 or the second indoor energy supply pipeline 222. Here, the structure of the second energy supply valve 232 can refer to the "first energy supply valve 231" shown in the previous embodiment, and will not be described in detail here.

[0098] And, in some optional embodiments, the air conditioning unit 100 further includes an indoor valve 172, which is disposed on the first indoor-outdoor pipe 161 or the second indoor-outdoor pipe 162, and is used to control the on-off state of the first indoor-outdoor pipe 161 or the second indoor-outdoor pipe 162. Here, the structure of the indoor valve 172 can refer to the "outdoor valve 171" shown in the previous embodiment, and will not be described in detail here.

[0099] And, in some optional embodiments, the air conditioning unit further includes an indoor liquid pump module 520, which is connected to the first indoor common pipeline 421 or the second indoor common pipeline 422, and is used to provide pumping power for the heat transfer medium in the indoor energy supply circulation loop. Here, the structure of the indoor liquid pump module 520 can refer to the "outdoor liquid pump module 510" shown in the previous embodiment, and will not be repeated here.

[0100] And, in some other optional embodiments, such as Figure 2 As shown, the air conditioning unit further includes an indoor energy storage box 620, which is connected to the first indoor common pipeline 421 or the second indoor common pipeline 422, and is used to store heat transfer medium. Here, the structure of the indoor energy storage box 620 can refer to the "outdoor energy storage box 610" shown in the previous embodiment, and will not be repeated here.

[0101] In some optional embodiments, the type of external cold source includes a natural water system, wherein the water source of the natural water system may include seawater, river water, groundwater, etc., which has the advantages of low temperature, high specific heat capacity, and wide sources.

[0102] In some further optional embodiments, the types of external heat sources include, but are not limited to, municipal heating systems, geothermal heat pump systems, and the like.

[0103] like Figures 1 to 4 As shown, in order to facilitate the external energy supply module 200 to access the external cold source and heat source and to facilitate the switching of the cold and heat sources, the external energy supply module 200 also includes a cold source external pipeline 711 and a cold source valve 712. The cold source external pipeline 711 is used to connect the external cold source and the indoor heat exchange part and the outdoor heat exchange part, so that the external cold source can exchange heat with the indoor heat exchange part and the outdoor heat exchange part; and the cold source valve 712 is arranged on the cold source external pipeline 711 to control the on-off state of the cold source external pipeline 711, thereby realizing the on-off control of the heat exchange state between the external cold source and the indoor heat exchange part and the outdoor heat exchange part.

[0104] Similarly, the external energy supply module 200 further includes a heat source external pipeline 721 and a heat source valve 722. The heat source external pipeline 721 is used to connect the external heat source and the indoor heat exchange unit and the outdoor heat exchange unit, so that the external heat source can exchange heat with the indoor heat exchange unit and the outdoor heat exchange unit; and the heat source valve 722 is arranged on the heat source external pipeline 721 to control the on-off state of the heat source external pipeline 721, thereby realizing the on-off control of the heat exchange state between the external cold and the indoor heat exchange unit and the outdoor heat exchange unit.

[0105] This embodiment can utilize two cold and heat source external pipelines and two cold and heat source valves to realize on-off control of the input energy of the external cold source and the external heat source.

[0106] In some optional embodiments, such as Figure 3 As shown, the air-conditioning unit also includes an intermediate heat exchange module 300, including an intermediate heat exchange part respectively connected to the outdoor heat exchanger 120 and the indoor heat exchanger 110 of one or more air-conditioning units 100, which is used to enable the outdoor heat exchanger 120 and the indoor heat exchanger 110 of one or more air-conditioning units 100 to perform heat exchange in a controlled manner in the intermediate heat exchange part.

[0107] Here, the intermediate heat exchange module 300 also includes a first outdoor intermediate pipeline 311 and a second outdoor intermediate pipeline 312. The first outdoor intermediate pipeline 311 can be used as a flow path for heat transfer medium input to the intermediate heat exchange part, and the second outdoor intermediate pipeline 312 can be used as a flow path for heat transfer medium output to the intermediate heat exchange part. At the same time, the first outdoor intermediate pipeline 311 is connected to the first outdoor common pipeline 411, and the second outdoor intermediate pipeline 312 is connected to the second outdoor common pipeline 412, so that the outdoor heat exchanger 120 and the intermediate heat exchange part of the air-conditioning unit 100 are constructed with an outdoor intermediate heat exchange circulation loop through the first outdoor common pipeline 411, the second outdoor common pipeline 412, the first outdoor intermediate pipeline 311, the second outdoor intermediate pipeline 312, the first outdoor external pipeline 151 and the second outdoor external pipeline 152.

[0108] Optionally, the first outdoor intermediate pipeline 311 or the second outdoor intermediate pipeline 312 is also provided with a first intermediate valve 331, which can be used to control the on / off state of the first outdoor intermediate pipeline 311 or the second outdoor intermediate pipeline 312, thereby controlling the opening and closing of the outdoor intermediate heat exchange flow path.

[0109] Similarly, the intermediate heat exchange module 300 also includes a first indoor intermediate pipeline 321 and a second indoor intermediate pipeline 322. The first indoor intermediate pipeline 321 can be used as a flow path for heat transfer medium input to the intermediate heat exchange part, and the second indoor intermediate pipeline 322 can be used as a flow path for heat transfer medium output to the intermediate heat exchange part. At the same time, the first indoor intermediate pipeline 321 is connected to the first indoor common pipeline 421, and the second indoor intermediate pipeline 322 is connected to the second indoor common pipeline 422, so that the indoor heat exchanger 110 and the intermediate heat exchange part of the air-conditioning unit 100 are constructed with an indoor intermediate heat exchange circulation loop through the first indoor common pipeline 421, the second indoor common pipeline 422, the first indoor intermediate pipeline 321, the second indoor intermediate pipeline 322, the first indoor and outdoor pipeline 161, and the second indoor and outdoor pipeline 162.

[0110] Optionally, the first indoor intermediate pipeline 321 or the second indoor intermediate pipeline 322 is also provided with a second intermediate valve 332, which can be used to control the on-off state of the first indoor intermediate pipeline 321 or the second indoor intermediate pipeline 322, thereby controlling the opening and closing of the indoor intermediate heat exchange flow path.

[0111] Exemplarily, the intermediate heat exchange part is a shell and tube heat exchanger, wherein the shell and tube heat exchanger includes a first group of heat pipes and a second group of heat pipes. When the heat transfer medium of the indoor intermediate heat exchange circulation loop flows through the first group of heat pipes, it exchanges heat with the heat transfer medium of the outdoor intermediate heat exchange circulation loop flowing through the second group of heat pipes. Optionally, the heat transfer direction can be from the first group of heat pipes to the second group of heat pipes, that is, the heat is transferred from the indoor side to the outdoor side; it can also be from the second group of heat pipes to the first group of heat pipes, that is, the heat is transferred from the outdoor side to the indoor side.

[0112] In this embodiment, the air-conditioning unit is additionally provided with an intermediate heat exchange module 300, and the pipelines where the outdoor heat exchanger 120 and the indoor heat exchanger 110 are located can directly exchange heat through the intermediate heat exchange module 300. For example, when the outdoor unit is frosted, the heat of the indoor heat exchanger 110 can be transferred from the intermediate heat exchange part to the outdoor heat exchanger 120, so as to utilize the heat of the indoor unit to realize the defrosting operation of the outdoor unit. During the above process, the air-conditioning unit 100 can keep the heating flow direction unchanged, thereby achieving the effect of defrosting without stopping the machine.

[0113] In some embodiments, the indoor heat exchanger 110 and / or the outdoor heat exchanger 120 is a three-medium heat exchanger having a refrigerant heat exchange pipe section, a heat transfer medium heat exchange pipe section and an air channel, and is configured to enable heat exchange between any two or three of the refrigerant heat exchange pipe section, the heat transfer medium heat exchange pipe section and the air channel.

[0114] The refrigerant heat exchange pipe section is used to be connected with the pipeline corresponding to the air-conditioning unit 100, and the heat transfer medium heat exchange pipe section is used to be connected with the pipeline corresponding to the outdoor energy supply circulation loop.

[0115] Exemplarily, a three-medium heat exchanger is used to allow the refrigerant flowing through the refrigerant heat exchange pipe section to exchange heat with the heat transfer medium flowing through the heat transfer medium heat exchange pipe section, such as transferring the heat of the high-temperature refrigerant to the heat transfer medium (taking the outdoor heat exchanger 120 under the summer cooling condition as an example), or transferring the cold of the low-temperature refrigerant to the heat transfer medium (taking the outdoor heat exchanger 120 under the winter heating condition as an example); and, a three-medium heat exchanger is used to allow the refrigerant flowing through the refrigerant heat exchange pipe section to exchange heat with the heat transfer medium flowing through the heat transfer medium heat exchange pipe section and the air flowing through the air channel at the same time, such as using the heat transfer medium and air to cool down the high-temperature refrigerant at the same time (taking the outdoor heat exchanger 120 under the summer cooling condition as an example), or using the heat transfer medium and air to heat up the low-temperature refrigerant at the same time (taking the outdoor heat exchanger 120 under the winter heating condition as an example), and so on.

[0116] In some other optional embodiments, combined with Figure 4As shown, the air conditioning unit 100 also includes a radiation heat exchange module, which can use the cold / heat of the heat transfer medium to perform auxiliary heat exchange on the indoor side. For example, when the low-temperature heat transfer medium flows through the radiation heat exchange module, the radiation heat exchange module can cool the indoor room; and when the medium- and high-temperature heat transfer medium flows through the radiation heat exchange module, the radiation heat exchange module can heat the indoor room.

[0117] Optionally, the radiation heat exchange module includes a radiation heat exchanger 181 and a radiation valve 182 .

[0118] There are one or more radiation heat exchangers 181, which are arranged in the indoor medium circulation loop, and the multiple radiation heat exchangers 181 are also connected in parallel. There are one or more radiation valves 182, which are arranged in the parallel pipe sections corresponding to the radiation heat exchangers 181 of the indoor medium circulation loop, and are used to individually control the on-off switching of the corresponding radiation heat exchangers 181. By controlling the opening and closing of each radiation valve 182, the start and stop states of the corresponding radiation heat exchangers 181 can be controlled.

[0119] In this embodiment, by setting up a radiation heat exchange module, the number of heat exchange devices between the air-conditioning unit 100 and the indoor environment can be increased, thereby improving the heat exchange efficiency; at the same time, the cooling / heating capacity of the radiation heat exchange module comes from the heat transfer medium in the indoor energy supply circulation loop, thereby further improving the energy supply rate from the external energy supply module 200.

[0120] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioning unit, characterized in that: include: A plurality of air conditioning units, each of which includes a compressor, an outdoor heat exchanger, and one or more indoor heat exchangers, and each of which is connected to an independent refrigerant circulation loop via a refrigerant pipeline; An external energy supply module includes an outdoor heat exchange part and an indoor heat exchange part; wherein the outdoor heat exchange part is connected in parallel with the outdoor heat exchanger of one or more air-conditioning units, and the indoor heat exchange part is connected in parallel with the indoor heat exchanger of one or more air-conditioning units; and the external energy supply module can be connected to an external cold source / heat source to supply cooling or heating to one or more air-conditioning units through the outdoor heat exchange part / indoor heat exchange part.

2. The air conditioning unit according to claim 1, characterized in that: The air conditioning unit also includes a first outdoor common pipeline and a second outdoor common pipeline; The external energy supply module further includes a first outdoor energy supply pipeline and a second outdoor energy supply pipeline which are connected to the outdoor heat exchange part, and the first outdoor energy supply pipeline is connected to the first outdoor common pipeline, and the second outdoor energy supply pipeline is connected to the second outdoor common pipeline; and, The air conditioning unit further includes a first outdoor external pipe and a second outdoor external pipe connected to the outdoor heat exchanger, wherein the first outdoor external pipe is connected to the first outdoor common pipe, and the second outdoor external pipe is connected to the second outdoor common pipe; Among them, the outdoor heat exchanger of the air-conditioning unit and the outdoor heat exchange part of the external energy supply module are connected to form an outdoor energy supply circulation loop through the first outdoor common pipeline, the second outdoor common pipeline, the first outdoor energy supply pipeline, the second outdoor energy supply pipeline, the first outdoor external pipeline and the second outdoor external pipeline.

3. The air conditioning unit according to claim 2, characterized in that: The external energy supply module also includes a first energy supply valve, which is arranged on the first outdoor energy supply pipeline or the second outdoor energy supply pipeline, and is used to control the on-off state of the first outdoor energy supply pipeline or the second outdoor energy supply pipeline; And / or, the air conditioning unit further includes an outdoor valve, which is arranged on the first outdoor external pipe or the second outdoor external pipe and is used to control the on / off state of the first outdoor external pipe or the second outdoor external pipe.

4. The air conditioning unit according to claim 2, characterized in that: Also includes: An outdoor liquid pump module, connected to the first outdoor common pipeline or the second outdoor common pipeline, is used to provide pumping power for the heat transfer medium in the outdoor energy supply circulation loop; and / or, The outdoor energy storage box is connected to the first outdoor common pipeline or the second outdoor common pipeline, and is used to store heat transfer medium.

5. The air conditioning unit according to claim 1, characterized in that: The air conditioning unit also includes a first indoor common pipeline and a second indoor common pipeline; The external energy supply module also includes a first indoor energy supply pipeline and a second indoor energy supply pipeline connected to the indoor heat exchange part, and the first indoor energy supply pipeline is connected to the first indoor common pipeline, and the second indoor energy supply pipeline is connected to the second indoor common pipeline; and, The air conditioning unit further includes a first indoor-outdoor pipeline and a second indoor-outdoor pipeline connected to the indoor heat exchanger, wherein the first indoor-outdoor pipeline is connected to the first indoor common pipeline, and the second indoor-outdoor pipeline is connected to the second indoor common pipeline; Among them, the indoor heat exchanger of the air-conditioning unit and the indoor heat exchange part of the external energy supply module form an indoor energy supply circulation loop through the first indoor common pipeline, the second indoor common pipeline, the first indoor energy supply pipeline, the second indoor energy supply pipeline, the first indoor and outdoor connecting pipeline and the second indoor and outdoor connecting pipeline.

6. The air conditioning unit according to claim 5, characterized in that: The external energy supply module also includes a second energy supply valve, which is arranged on the first indoor energy supply pipeline or the second indoor energy supply pipeline, and is used to control the on-off state of the first indoor energy supply pipeline or the second indoor energy supply pipeline; And / or, the air conditioning unit further includes an indoor valve, which is arranged on the first indoor-outdoor piping line or the second indoor-outdoor piping line, and is used to control the on-off state of the first indoor-outdoor piping line or the second indoor-outdoor piping line.

7. The air conditioning unit according to claim 5, characterized in that: Also includes: An indoor liquid pump module, connected to the first indoor common pipeline or the second indoor common pipeline, is used to provide pumping power for the heat transfer medium in the indoor energy supply circulation loop; and / or, The indoor energy storage box is connected to the first indoor common pipeline or the second indoor common pipeline, and is used to store heat transfer medium.

8. The air conditioning unit according to any one of claims 1 to 7, characterized in that: The external energy supply module also includes: A cold source external pipeline and a cold source valve, wherein the cold source external pipeline is used to connect an external cold source, and the cold source valve is arranged on the cold source external pipeline to control the on / off state of the cold source external pipeline; and / or, The heat source external pipeline and the heat source valve, the heat source external pipeline is used to connect the external heat source, and the heat source valve is arranged on the heat source external pipeline to control the on-off state of the heat source external pipeline.

9. The air conditioning unit according to any one of claims 1 to 7, characterized in that: Also includes: The intermediate heat exchange module includes an intermediate heat exchange part which is respectively connected to the outdoor heat exchanger and the indoor heat exchanger of one or more air-conditioning units, and is used to enable the outdoor heat exchanger and the indoor heat exchanger of one or more air-conditioning units to perform heat exchange in a controlled manner in the intermediate heat exchange part.

10. The air conditioning unit according to claim 1, characterized in that: The indoor heat exchanger and / or the outdoor heat exchanger is a three-medium heat exchanger, which has a refrigerant heat exchange pipe section, a heat transfer medium heat exchange pipe section and an air channel, and is configured to enable heat exchange between any two or three of the refrigerant heat exchange pipe section, the heat transfer medium heat exchange pipe section and the air channel.

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