Direct-connected air conditioning pipeline system and air conditioner

Abstract

The present invention discloses a direct-connected air conditioning pipeline system and air conditioning, which relates to the field of air conditioning technology and solves the problems of high cost and large equipment space occupied by air conditioning in subway stations in the prior art. The direct-connected air conditioning pipeline system of the present invention includes a return water mechanism and a water supply mechanism, which are respectively connected to the two sides of the main unit, the return water mechanism includes at least two return water pipeline assemblies, and a return water control valve is arranged between at least two return water pipeline assemblies, and the return water control valve is used to control the on-off between at least two return water pipeline assemblies; the water supply mechanism includes at least two water supply pipeline assemblies, and a water supply control valve is arranged between at least two water supply pipeline assemblies, and the water supply control valve is used to control the on-off between at least two water supply pipeline assemblies. When the water pump of the direct-connected air conditioning pipeline system of the present invention is maintained, the normal use of the air conditioner in the short term can be ensured, and at the same time, the construction cost of the subway air conditioning machine room can be reduced, and the machine room space can be saved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a direct-connected air conditioning pipeline system and an air conditioner comprising the pipeline system. Background Art

[0002] The subway station is an underground excavation space, and its internal space was planned accordingly at the beginning of the architectural design. Due to the high construction cost of underground space, the space reserved in the subway station was relatively conservative during the early architectural planning, resulting in a relatively compact space in the air-conditioning room in the subway station.

[0003] At present, in order to facilitate the maintenance or replacement of water pumps in traditional subway station air conditioners, the solution adopted is: prepare a spare water pump pipeline when the water pump is in use. Figure 1 The figure shows a schematic diagram of the existing subway station refrigeration and air conditioning piping system. Figure 1 As shown, subway station air conditioners generally adopt the "two in use and one backup" mode, that is, the air conditioner has two main units, but three water pumps are set on the chilled water return side and the cooling water supply side. When the air conditioner is working, only two of the water pumps on the chilled water return side and the cooling water supply side are used as working water pumps, and the remaining water pump is used as a backup water pump. The backup water pump is started only when the working water pump needs to be repaired or replaced.

[0004] However, the applicant found that the existing air conditioners using spare water pumps and pipelines in subway stations have at least the following defects: spare water pumps and pipelines will increase the cost of air conditioners and the space occupied by the equipment, resulting in chaotic pipelines in the machine room, small space, and high cost. Therefore, improving the pipeline system of existing subway station air conditioners has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] One of the purposes of the present invention is to provide a direct-connected air conditioning pipe system and air conditioning, which solves the technical problems of high cost and large equipment space occupied by subway station air conditioning in the prior art. The many technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The direct-connected air-conditioning piping system of the present invention comprises a water return mechanism and a water supply mechanism, wherein the water return mechanism and the water supply mechanism are respectively connected to the two sides of the main unit, wherein the water return mechanism comprises at least two water return piping assemblies, and a water return control valve is arranged between at least two of the water return piping assemblies, and the water return control valve is used to control the on-off between at least two of the water return piping assemblies; the water supply mechanism comprises at least two water supply piping assemblies, and a water supply control valve is arranged between at least two of the water supply piping assemblies, and the water supply control valve is used to control the on-off between at least two of the water supply piping assemblies.

[0008] According to a preferred embodiment, the host unit includes at least two hosts, the number of the hosts matches the number of the return pipe assemblies and the water supply pipe assemblies, and one end of each of the return pipe assemblies is connected to one end of the host, and one end of each of the water supply pipe assemblies is connected to the other end of the host.

[0009] According to a preferred embodiment, the return water mechanism includes a first return water pipeline assembly and a second return water pipeline assembly, the water supply mechanism includes a first water supply pipeline assembly and a second water supply pipeline assembly, the main unit includes a first main unit and a second main unit, and one end of the first return water pipeline assembly and the second return water pipeline assembly are respectively connected to one end of the first main unit and the second main unit; one end of the first water supply pipeline assembly and the second water supply pipeline assembly are respectively connected to the other end of the first main unit and the second main unit.

[0010] According to a preferred embodiment, the first return water pipeline assembly includes a first return water pipe and a first return water pump arranged on the first return water pipe, the second return water pipeline assembly includes a second return water pipe and a second return water pump arranged on the second return water pipe, the return water mechanism also includes a third return water pipe, the third return water pipe is connected to the first return water pipe and the second return water pipe, and the return water control valve is arranged on the third return water pipe.

[0011] According to a preferred embodiment, when the first return water pump and the second return water pump are in normal working state, the return water control valve is closed, and the return water flows to the first host and the second host through the first return water pump and the second return water pump respectively; when one of the first return water pump and the second return water pump is in maintenance state, the return water control valve is opened, and the return water flows to the first host and the second host through the other of the first return water pump and the second return water pump and the return water control valve.

[0012] According to a preferred embodiment, the first water return pipeline assembly and the second water return pipeline assembly further include a flow monitoring device and a flow regulating valve, and the flow monitoring device and the flow regulating valve are arranged at one end of the first water return pipe and the second water return pipe close to the first host and the second host, and the opening of the flow regulating valve is adjusted based on the flow monitored by the flow monitoring device so that the return water volume of the first host and the second host is not less than the required minimum flow.

[0013] According to a preferred embodiment, the first water supply pipeline assembly includes a first water supply pipe and a first water supply pump arranged on the first water supply pipe, the second water supply pipeline assembly includes a second water supply pipe and a second water supply pump arranged on the second water supply pipe, the water supply mechanism also includes a third water supply pipe, the third water supply pipe is connected to the first water supply pipe and the second water supply pipe, and the water supply control valve is arranged on the third water supply pipe.

[0014] According to a preferred embodiment, when the first water supply pump and the second water supply pump are in normal working state, the water supply control valve is closed, and the water supply flows to the first host and the second host through the first water supply pump and the second water supply pump respectively; when one of the first water supply pump and the second water supply pump is in maintenance state, the water supply control valve is opened, and the water supply flows to the first host and the second host through the other of the first water supply pump and the second water supply pump and the water supply control valve.

[0015] According to a preferred embodiment, the first water supply pipeline assembly and the second water supply pipeline assembly also include a flow monitoring device and a flow regulating valve, and the flow monitoring device and the flow regulating valve are arranged at one end of the first water supply pipe and the second water supply pipe close to the first host and the second host, and the opening of the flow regulating valve is adjusted based on the flow monitored by the flow monitoring device so that the water supply of the first host and the second host is not less than the required minimum flow.

[0016] The air conditioner of the present invention comprises the direct-connected air conditioning pipeline system described in any technical solution of the present invention.

[0017] The direct-connected air conditioning pipeline system and air conditioning provided by the present invention have at least the following beneficial technical effects:

[0018] The direct-connected air conditioning pipeline system of the present invention includes a return water mechanism and a water supply mechanism. A return water control valve is provided between at least two return water pipeline components, and the return water control valve is used to control the on-off between at least two return water pipeline components. A water supply control valve is provided between at least two water supply pipeline components, and the water supply control valve is used to control the on-off between at least two water supply pipeline components. When the return water pump of the return water mechanism and / or the water supply pump of the water supply mechanism are maintained, the return water control valve is used to control the at least two return water pipeline components to be connected and / or the water supply control valve is used to control the at least two water supply pipeline components to be connected, which can ensure the normal use of the air conditioner in a short period of time, and can also reduce the cost of the subway air conditioning room and save the room space. Specifically, the direct-connected air conditioning pipeline system of the present invention can reduce the cost of the subway air conditioning room by eliminating two spare water pumps and the pipe fittings and valve components where the two pump water pumps are located, and can also save the space occupied by the two pump water pumps. That is, the direct-connected air-conditioning pipeline system of the present invention solves the technical problems of high cost and large equipment space occupied in subway station air-conditioning in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of a refrigeration and air conditioning piping system of a subway station in the prior art;

[0021] Figure 2 It is a schematic diagram of a preferred embodiment of the subway station refrigeration and air-conditioning pipeline system of the present invention.

[0022] In the figure: 1. return water control valve; 2. water supply control valve; 3. first main unit; 4. second main unit; 5. first return water pipe; 6. first return water pump; 7. second return water pipe; 8. second return water pump; 9. third return water pipe; 10. first water supply pipe; 11. first water supply pump; 12. second water supply pipe; 13. second water supply pump; 14. third water supply pipe; 15. first butterfly valve; 16. second butterfly valve; 17. third butterfly valve; 18. fourth butterfly valve; 19. flow meter; 20. electric butterfly valve. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0024] The following is attached to the instruction manual Figure 2 And embodiments 1 and 2 describe the direct-connected air conditioning pipeline system and air conditioner of the present invention in detail.

[0025] Example 1

[0026] This embodiment describes in detail the direct-connected air conditioning pipeline system of the present invention.

[0027] The direct-connected air conditioning pipeline system of this embodiment includes a water return mechanism and a water supply mechanism, and the water return mechanism and the water supply mechanism are respectively connected to the two sides of the host unit. Preferably, the water return mechanism includes at least two water return pipeline components, and a water return control valve 1 is arranged between the at least two water return pipeline components, and the water return control valve 1 is used to control the on-off between the at least two water return pipeline components, such as Figure 2 Preferably, the water supply mechanism includes at least two water supply pipeline assemblies, and a water supply control valve 2 is provided between the at least two water supply pipeline assemblies, and the water supply control valve 2 is used to control the on-off between the at least two water supply pipeline assemblies, such as Figure 2 More preferably, the return water control valve 1 and the water supply control valve 2 are butterfly valves.

[0028] The host unit of this embodiment can be a refrigeration unit or a heating unit, so that the direct-connected air conditioning pipeline system of this embodiment can be used for both refrigeration and heating air conditioning. The direct-connected air conditioning pipeline system of this embodiment is described below by taking the host unit as a refrigeration unit as an example.

[0029] Specifically, when the return water pumps on at least two return water pipeline assemblies are working normally, the return water control valve 1 is closed, and at least two return water pipeline assemblies form a parallel pipeline assembly, and the chilled return water can flow to the refrigeration unit through the water pumps on at least two return water pipeline assemblies; when one of the return water pumps on at least two return water pipeline assemblies is in a maintenance state, the return water control valve 1 is opened, and the chilled return water can flow to the refrigeration unit through at least one of the other return water pumps, and at the same time, the chilled return water can also flow through the return water control valve 1 to the return water pipe of the return water pump in the maintenance state, and then flow into the refrigeration unit, so as to ensure that the air conditioner can be temporarily used in the short term, and can also meet the water pump switching use in the transition season. That is, when one of the return water pumps is in a maintenance state, the required return water volume can be provided to each host through at least one other return water pump, so as to ensure the normal use of the air conditioner in the short term.

[0030] Similarly, when the water supply pumps on at least two water supply pipeline assemblies are working normally, the water supply control valve 2 is closed, and at least two water supply pipeline assemblies form a parallel pipeline assembly, and the cooling water supply can flow to the refrigeration unit through the water pumps on at least two water supply pipeline assemblies; when one of the water supply pumps on at least two water supply pipeline assemblies is in a maintenance state, the water supply control valve 2 is opened, and the cooling water supply can flow to the refrigeration unit through at least one of the remaining water supply pumps, and at the same time, the cooling water supply can also flow through the water supply control valve 2 to the water supply pipe where the water supply pump is in a maintenance state, and then flow into the refrigeration unit, so as to ensure that the air conditioner can be temporarily used in a short period of time, and can also meet the needs of switching the water pump in the transition season. That is, when one of the water supply pumps is in a maintenance state, the required water supply can be provided to each host through at least one other water supply pump, so as to ensure the normal use of the air conditioner in a short period of time.

[0031] The direct-connected air-conditioning piping system of this embodiment, when the return pump of the return mechanism and / or the water supply pump of the water supply mechanism are under maintenance, controls the connection between at least two return pipe components through the return control valve 1 and / or controls the connection between at least two water supply pipe components through the water supply control valve 2, which can ensure the normal use of the air conditioner in the short term, and can also reduce the cost of the subway air-conditioning room and save the room space. Specifically, the direct-connected air-conditioning piping system of this embodiment can reduce the cost of the subway air-conditioning room by eliminating the two spare water pumps and the pipe fittings and valve components where the two pump water pumps are located, and can also save the space occupied by the two pump water pumps. That is, the direct-connected air-conditioning piping system of this embodiment solves the technical problems of high cost and large equipment space occupied by subway station air conditioners in the prior art.

[0032] According to a preferred embodiment, the host unit includes at least two hosts, the number of the hosts matches the number of return pipe assemblies and water supply pipe assemblies, and one end of each return pipe assembly is connected to one end of the host, and one end of each water supply pipe assembly is connected to the other end of the host. Figure 2 The schematic diagram of the host unit including two hosts is shown. Not limited thereto, when the required power is large, the host unit may also include three or more hosts, and accordingly, the return water mechanism includes at least three return water pipeline assemblies, and the water supply mechanism includes at least three water supply pipeline assemblies.

[0033] According to a preferred embodiment, the water return mechanism includes a first water return pipeline assembly and a second water return pipeline assembly, the water supply mechanism includes a first water supply pipeline assembly and a second water supply pipeline assembly, the host unit includes a first host 3 and a second host 4, and one end of the first water return pipeline assembly and the second water return pipeline assembly are respectively connected to one end of the first host 3 and the second host 4; one end of the first water supply pipeline assembly and the second water supply pipeline assembly are respectively connected to the other end of the first host 3 and the second host 4, such as Figure 2The preferred technical solution of this embodiment includes two return water pipe assemblies, the water supply mechanism includes two water supply pipe assemblies, and the main unit includes two main units, so that the air conditioner can reduce the cost of the subway air conditioning room while meeting the power requirements, and can also save equipment space.

[0034] According to a preferred embodiment, the first water return pipeline assembly includes a first water return pipe 5 and a first water return pump 6 arranged on the first water return pipe 5, the second water return pipeline assembly includes a second water return pipe 7 and a second water return pump 8 arranged on the second water return pipe 7, the water return mechanism also includes a third water return pipe 9, the third water return pipe 9 is connected to the first water return pipe 5 and the second water return pipe 7, and the water return control valve 1 is arranged on the third water return pipe 9, as shown in FIG. Figure 2 Preferably, a first butterfly valve 15 is provided before and after the first return water pump 6, and a second butterfly valve 16 is provided before and after the second return water pump 8, as shown in FIG. Figure 2 When the first return water pump 6 needs to be maintained, the first butterfly valve 15 before and after the first return water pump 6 is closed; when the second return water pump 8 needs to be maintained, the second butterfly valve 16 before and after the second return water pump 8 is closed.

[0035] According to a preferred embodiment, when the first water return pump 6 and the second water return pump 8 are in normal working state, the water return control valve 1 is closed, and the return water flows to the first host 3 and the second host 4 through the first water return pump 6 and the second water return pump 8 respectively; when one of the first water return pump 6 and the second water return pump 8 is in maintenance state, the water return control valve 1 is opened, and the return water flows to the first host 3 and the second host 4 through the other of the first water return pump 6 and the second water return pump 8 and the water return control valve 1, as shown in FIG. Figure 2 That is, when one of the first return water pump 6 and the second return water pump 8 is in the maintenance state, the return water control valve 1 is opened, so that the other of the first return water pump 6 and the second return water pump 8 can provide the required return water volume for the first host 3 and the second host 4. The maintenance state mentioned in the preferred technical solution of this embodiment can be a repair state, an overhaul state, or a replacement state.

[0036] like Figure 2 As shown, when the first return water pump 6 and the second return water pump 8 work normally, the first butterfly valve 15 before and after the first return water pump 6 is opened, the second butterfly valve 16 before and after the second return water pump 8 is opened, the return water control valve 1 is closed, the first return water pump 6 is connected to the first host 3, the second return water pump 8 is connected to the second host 4, the first return water pipe 5 and the second return water pipe 7 are not connected, and the two form a parallel pipeline, and the chilled return water flows to the first host 3 through the first return water pump 6, and flows to the second host 4 through the second return water pump 8.

[0037] like Figure 2As shown, the first return water pump 6 is in maintenance state, and when the second return water pump 8 works normally, the first butterfly valve 15 before and after the first return water pump 6 is closed, the second butterfly valve 16 before and after the second return water pump 8 is opened, the return water control valve 1 is opened, the first return water pump 6 is not connected with the first host 3, the second return water pump 8 is connected with the second host 4, the first return water pipe 5 and the second return water pipe 7 are connected, and the chilled return water flows to the second host 4 through the second return water pump 8. At the same time, the chilled return water passing through the second return water pump 8 also flows to the first return water pipe 5 through the third return water pipe 9, and then flows into the first refrigeration unit 3, so as to ensure that the air conditioner can be temporarily used in a short period of time, and can also meet the water pump switching use in transition seasons.

[0038] Similarly, if Figure 2 As shown, the second return water pump 8 is in maintenance state. When the first return water pump 6 works normally, the first butterfly valve 15 before and after the first return water pump 6 is opened, the second butterfly valve 16 before and after the second return water pump 8 is closed, the return water control valve 1 is opened, the first return water pump 6 is connected to the first host 3, the second return water pump 8 is not connected to the second host 4, the first return water pipe 5 and the second return water pipe 7 are connected, and the chilled return water flows to the first host 3 through the first return water pump 6. At the same time, the chilled return water passing through the first return water pump 6 also flows to the second return water pipe 7 through the third return water pipe 9, and then flows into the second refrigeration unit 4, so as to ensure that the air conditioner can be temporarily used in a short period of time, and can also meet the water pump switching use in transition seasons.

[0039] According to a preferred embodiment, the first water return pipe assembly and the second water return pipe assembly further include a flow monitoring device and a flow regulating valve. Preferably, the flow monitoring device and the flow regulating valve are arranged at one end of the first water return pipe 5 and the second water return pipe 7 close to the first host 3 and the second host 4, and the opening of the flow regulating valve is adjusted based on the flow monitored by the flow monitoring device so that the return water volume of the first host 3 and the second host 4 is not less than the required minimum flow. The first water return pipe assembly and the second water return pipe assembly of the preferred technical solution of this embodiment further include a flow monitoring device and a flow regulating valve. Through the action of the flow monitoring device and the flow regulating valve, the return water volume of the first host 3 and the second host 4 can be made not less than the required minimum flow, so as to ensure that the air conditioner can be temporarily used in the short term, and can also meet the switching use of the water pump in the transition season.

[0040] When the first return water pump 6 is in the maintenance state, the flow of the first return water pipe 5 and the second return water pipe 7 is monitored by the flow monitoring device. If the flow of the first return water pipe 5 is lower than the flow of the second return water pipe 7, the flow regulating valve opening on the second return water pipe 7 can be adjusted down by the control system, and the flow regulating valve opening on the first return water pipe 5 can be adjusted up until the return water volume of the first host 3 and the second host 4 is 50% of the rated flow (the minimum flow requirement for general equipment operation is not less than 40% of the rated flow of the equipment), thereby ensuring that the air conditioner can be temporarily used in a short period of time, and can also meet the requirements of switching the water pump in the transition season. Similarly, when the second return water pump 8 is in the maintenance state, the flow of the first return water pipe 5 and the second return water pipe 7 is monitored by the flow monitoring device, and the opening of the flow regulating valve on the first return water pipe 5 and the second return water pipe 7 is adjusted by the control system, which can also meet the requirements of the return water volume of the first host 3 and the second host 4 being 50% of the rated flow, thereby ensuring that the air conditioner can be temporarily used in a short period of time, and can also meet the requirements of switching the water pump in the transition season. The control system described in the preferred technical solution of this embodiment is a weak current control system of the air conditioner.

[0041] According to a preferred embodiment, the flow monitoring device is a flow meter 19, such as Figure 2 The flow rate of the first water return pipe 5 and the second water return pipe 7 can be monitored by the flow meter 19.

[0042] According to a preferred embodiment, the flow monitoring device is a temperature sensor. The flow of the first water return pipe 5 and the second water return pipe 7 is estimated based on the formula Q=Cm(t1-t2). Among them, C is the specific heat capacity of the material in the pipe, m is the material of the material in the pipe, t1 is the temperature at the water inlet of the first water return pipe 5 and the second water return pipe 7 monitored by the temperature sensor, and t2 is the temperature at the water outlet of the first water return pipe 5 and the second water return pipe 7 monitored by the temperature sensor.

[0043] According to a preferred embodiment, the flow regulating valves on the first return pipe 5 and the second return pipe 7 are electric butterfly valves 20, and the control system can automatically adjust the opening of the electric butterfly valve 20 based on the flow in the first return pipe 5 and the second return pipe 7, so that the return water volume of the first host 3 and the second host 4 is not less than the required minimum flow.

[0044] According to a preferred embodiment, the regulating valves on the first water return pipe 5 and the second water return pipe 7 may also be smart valves. The smart valves may automatically monitor the flow of the first water return pipe 5 and the second water return pipe 7, and automatically check to balance the flow of the first water return pipe 5 and the second water return pipe 7. The smart valve may integrate the regulating valve and the flow monitoring device, so the flow meter 19 may be eliminated. The smart valve is a product in the prior art and will not be described in detail here.

[0045] According to a preferred embodiment, the first water supply pipeline assembly includes a first water supply pipe 10 and a first water supply pump 11 arranged on the first water supply pipe 10, the second water supply pipeline assembly includes a second water supply pipe 12 and a second water supply pump 13 arranged on the second water supply pipe 12, and the water supply mechanism also includes a third water supply pipe 14, the third water supply pipe 14 is connected to the first water supply pipe 10 and the second water supply pipe 12, and the water supply control valve 2 is arranged on the third water supply pipe 14, as shown in FIG. Figure 2 Preferably, a third butterfly valve 17 is provided before and after the first water supply pump 11, and a fourth butterfly valve 18 is provided before and after the second water supply pump 13, as shown in FIG. Figure 2 When the first water supply pump 11 needs to be maintained, the third butterfly valve 17 before and after the first water supply pump 11 is closed; when the second water supply pump 13 needs to be maintained, the fourth butterfly valve 18 before and after the second water supply pump 13 is closed.

[0046] According to a preferred embodiment, when the first water supply pump 11 and the second water supply pump 13 are in normal working state, the water supply control valve 2 is closed, and the water supply flows to the first host 3 and the second host 4 through the first water supply pump 11 and the second water supply pump 13 respectively; when one of the first water supply pump 11 and the second water supply pump 13 is in maintenance state, the water supply control valve 2 is opened, and the water supply flows to the first host 3 and the second host 4 through the other of the first water supply pump 11 and the second water supply pump 13 and the water supply control valve 2. That is, when one of the first water supply pump 11 and the second water supply pump 13 is in maintenance state, the water supply control valve 2 is opened, so that the required water supply can be provided to the first host 3 and the second host 4 through the first return water pump 6 and the other of the first water supply pump 11 and the second water supply pump 13. The maintenance state mentioned in the preferred technical solution of this embodiment can be a repair state, an overhaul state, or a replacement state.

[0047] like Figure 2 As shown, when the first water supply pump 11 and the second water supply pump 13 are working normally, the third butterfly valve 17 before and after the first water supply pump 11 is opened, the fourth butterfly valve 18 before and after the second water supply pump 13 is opened, the water supply control valve 2 is closed, the first water supply pump 11 is connected to the first host 3, the second water supply pump 13 is connected to the second host 4, the first water supply pipe 10 and the second water supply pipe 12 are not connected, and the two form a parallel pipeline, and the cooling water flows to the first host 3 through the first water supply pump 11, and flows to the second host 4 through the second water supply pump 13.

[0048] like Figure 2As shown, the first water supply pump 11 is in maintenance state, and the second water supply pump 13 is working normally, the third butterfly valve 17 before and after the first water supply pump 11 is closed, the fourth butterfly valve 18 before and after the second water supply pump 13 is opened, the water supply control valve 2 is opened, the first water supply pump 11 is not connected with the first host 3, the second water supply pump 13 is connected with the second host 4, the first water supply pipe 10 and the second water supply pipe 12 are connected, the cooling water flows to the second host 4 through the second water supply pump 13, and the cooling water passing through the second water supply pump 13 also flows to the first water supply pipe 10 through the third water supply pipe 14, and then flows into the first refrigeration unit 3, so as to ensure that the air conditioner can be temporarily used in a short period of time, and can also meet the water pump switching use in transition seasons.

[0049] Similarly, if Figure 2 As shown, the second water supply pump 13 is in maintenance status. When the first water supply pump 11 works normally, the third butterfly valve 17 before and after the first water supply pump 11 is opened, the fourth butterfly valve 18 before and after the second water supply pump 13 is closed, the water supply control valve 2 is opened, the first water supply pump 11 is connected to the first host 3, the second water supply pump 13 is not connected to the second host 4, the first water supply pipe 10 and the second water supply pipe 12 are connected, and the cooling water flows to the first host 3 through the first water supply pump 11. At the same time, the cooling water passing through the first water supply pump 11 also flows to the second water supply pipe 12 through the third water supply pipe 14, and then flows into the second refrigeration unit 4, so as to ensure that the air conditioner can be temporarily used in a short period of time, and can also meet the water pump switching use in transition seasons.

[0050] According to a preferred embodiment, the first water supply pipeline assembly and the second water supply pipeline assembly further include a flow monitoring device and a flow regulating valve, which are arranged at one end of the first water supply pipe 10 and the second water supply pipe 12 close to the first host 3 and the second host 4, and adjust the opening of the flow regulating valve based on the flow monitored by the flow monitoring device so that the water supply of the first host 3 and the second host 4 is not less than the required minimum flow. The first water supply pipeline assembly and the second water supply pipeline assembly of the preferred technical solution of this embodiment further include a flow monitoring device and a flow regulating valve, through the action of the flow monitoring device and the flow regulating valve, the water supply of the first host 3 and the second host 4 can be made not less than the required minimum flow, so as to ensure that the air conditioner can be used temporarily in the short term, and can also meet the switching use of the water pump in the transition season.

[0051] When the first water supply pump 11 is in the maintenance state, the flow rate of the first water supply pipe 10 and the second water supply pipe 12 is monitored by the flow monitoring device. If the flow rate of the first water supply pipe 10 is lower than the flow rate of the second water supply pipe 12, the control system can be used to reduce the opening of the regulating valve on the second water supply pipe 12 and increase the opening of the regulating valve on the first water supply pipe 10 until the water supply of the first host 3 and the second host 4 is 50% of the rated flow rate (the minimum flow rate of general equipment operation is required to be not less than 40% of the rated flow rate of the equipment), thereby ensuring that the air conditioner can be temporarily used in a short period of time and can also meet the requirements of water pump switching in transition seasons. Similarly, when the second water supply pump 13 is in the maintenance state, the flow rate of the first water supply pipe 10 and the second water supply pipe 12 is monitored by the flow monitoring device, and the opening of the regulating valve on the first water supply pipe 10 and the second water supply pipe 12 is adjusted by the control system, which can also meet the requirements of water supply of the first host 3 and the second host 4 being 50% of the rated flow rate, thereby ensuring that the air conditioner can be temporarily used in a short period of time and can also meet the requirements of water pump switching in transition seasons. The control system described in the preferred technical solution of this embodiment is a weak current control system of the air conditioner.

[0052] According to a preferred embodiment, the flow monitoring device and flow regulating valve on the first water supply pipeline assembly and the second water supply pipeline assembly are the same as the flow monitoring device and flow regulating valve on the first return water pipeline assembly and the second return water pipeline assembly, and are not repeated here.

[0053] Example 2

[0054] This embodiment describes the air conditioner of the present invention in detail.

[0055] The air conditioner of this embodiment includes the direct-connected air conditioning pipeline system of any technical solution in Example 1. Preferably, the air conditioner of this embodiment is a refrigeration air conditioner or a heating air conditioner. The air conditioner of this embodiment includes the direct-connected air conditioning pipeline system of any technical solution in Example 1, which can ensure the normal use of the air conditioner in a short period of time when the water pump is maintained, and can also reduce the cost of the subway air conditioning room and save the room space.

[0056] Preferably, the air conditioner of this embodiment is a direct-connected air conditioner, so that the direct-connected air conditioner of the preferred technical solution of this embodiment can meet the maintenance requirements of the direct-connected air conditioner while meeting the high efficiency, thereby improving the reliability of the high-efficiency direct-connected air conditioner room.

[0057] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0059] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A direct-connected air conditioning pipeline system, characterized in that: It includes a water return mechanism and a water supply mechanism, wherein the water return mechanism and the water supply mechanism are respectively connected to the two sides of the main unit, wherein: The water return mechanism comprises at least two water return pipeline assemblies, and a water return control valve (1) is arranged between at least two of the water return pipeline assemblies, and the water return control valve (1) is used to control the on-off between at least two of the water return pipeline assemblies; the water supply mechanism comprises at least two water supply pipeline assemblies, and a water supply control valve (2) is arranged between at least two of the water supply pipeline assemblies, and the water supply control valve (2) is used to control the on-off between at least two of the water supply pipeline assemblies; The host unit includes at least two hosts, the number of the hosts matches the number of the return pipe assemblies and the water supply pipe assemblies, and one end of each return pipe assembly is connected to one end of the host, and one end of each water supply pipe assembly is connected to the other end of the host; The water return mechanism comprises a first water return pipeline assembly and a second water return pipeline assembly, the water supply mechanism comprises a first water supply pipeline assembly and a second water supply pipeline assembly, the host unit comprises a first host (3) and a second host (4), and one end of the first water return pipeline assembly and the second water return pipeline assembly are respectively connected to one end of the first host (3) and the second host (4); one end of the first water supply pipeline assembly and the second water supply pipeline assembly are respectively connected to the other end of the first host (3) and the second host (4); The first water return pipeline assembly comprises a first water return pipe (5) and a first water return pump (6) arranged on the first water return pipe (5); the second water return pipeline assembly comprises a second water return pipe (7) and a second water return pump (8) arranged on the second water return pipe (7); the water return mechanism further comprises a third water return pipe (9), the third water return pipe (9) is connected to the first water return pipe (5) and the second water return pipe (7), and the water return control valve (1) is arranged on the third water return pipe (9); The first water return pipeline assembly and the second water return pipeline assembly further include a flow monitoring device and a flow regulating valve, wherein the flow monitoring device and the flow regulating valve are arranged at one end of the first water return pipe (5) and the second water return pipe (7) close to the first host (3) and the second host (4), and the opening of the flow regulating valve is adjusted based on the flow monitored by the flow monitoring device so that the return water volume of the first host (3) and the second host (4) is not less than the required minimum flow; When the first water return pump (6) and the second water return pump (8) are in normal working state, the water return control valve (1) is closed, and the return water flows to the first main unit (3) and the second main unit (4) through the first water return pump (6) and the second water return pump (8) respectively; When one of the first return water pump (6) and the second return water pump (8) is in a maintenance state, the return water control valve (1) is opened, and the return water flows to the first main unit (3) and the second main unit (4) through the other of the first return water pump (6) and the second return water pump (8) and the return water control valve (1).

2. The direct-connected air conditioning pipeline system according to claim 1, characterized in that: The first water supply pipeline assembly comprises a first water supply pipe (10) and a first water supply pump (11) arranged on the first water supply pipe (10), the second water supply pipeline assembly comprises a second water supply pipe (12) and a second water supply pump (13) arranged on the second water supply pipe (12), the water supply mechanism further comprises a third water supply pipe (14), the third water supply pipe (14) is connected to the first water supply pipe (10) and the second water supply pipe (12), and the water supply control valve (2) is arranged on the third water supply pipe (14).

3. The direct-connected air conditioning pipeline system according to claim 2, characterized in that: When the first water supply pump (11) and the second water supply pump (13) are in normal working state, the water supply control valve (2) is closed, and the water flows to the first main unit (3) and the second main unit (4) through the first water supply pump (11) and the second water supply pump (13) respectively; When one of the first water supply pump (11) and the second water supply pump (13) is in a maintenance state, the water supply control valve (2) is opened, and the water supply flows to the first host (3) and the second host (4) through the other of the first water supply pump (11) and the second water supply pump (13) and the water supply control valve (2).

4. The direct-connected air conditioning pipeline system according to claim 2, characterized in that: The first water supply pipeline assembly and the second water supply pipeline assembly further include a flow monitoring device and a flow regulating valve. The flow monitoring device and the flow regulating valve are arranged at one end of the first water supply pipe (10) and the second water supply pipe (12) close to the first host (3) and the second host (4), and the opening of the flow regulating valve is adjusted based on the flow monitored by the flow monitoring device so that the water supply of the first host (3) and the second host (4) is not less than the required minimum flow.

5. An air conditioner, characterized in that: A direct-connected air conditioning pipeline system comprising any one of claims 1 to 4.

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