CN215216488U - Multi-pipe system multi-split air conditioner outdoor unit - Google Patents
Multi-pipe system multi-split air conditioner outdoor unit Download PDFInfo
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- CN215216488U CN215216488U CN202121518518.6U CN202121518518U CN215216488U CN 215216488 U CN215216488 U CN 215216488U CN 202121518518 U CN202121518518 U CN 202121518518U CN 215216488 U CN215216488 U CN 215216488U
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Abstract
The utility model discloses a multi-pipe system multi-split air conditioner outdoor unit, wherein the refrigerant gas outlet of the compressor of the running outdoor unit module is divided into two paths, one path is communicated and connected with the refrigerant inlet of the first electronic expansion valve of the running outdoor unit module, and the other path is communicated and connected with the refrigerant inlet of the second electronic expansion valve of the running outdoor unit module; the running outdoor unit module is connected with a condenser of the running outdoor unit module through a first electronic expansion valve; the running outdoor unit module is connected with a condenser of the non-running outdoor unit module through a second electronic expansion valve, a second electronic expansion valve of the non-running outdoor unit module and a first electronic expansion valve; the condensers are connected with the indoor machine side, the indoor machine side is connected with an indoor machine heat exchanger, and the indoor machine heat exchanger is connected with a compressor for operating an outdoor machine module; the condenser heat exchange area of the non-operating outdoor unit module is fully utilized, the condensation heat exchange efficiency is improved, the condensation temperature of the refrigeration cycle is reduced, and the operation energy efficiency of the multi-split air-conditioning system under partial load is improved.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, concretely relates to many on-line units of multitube system off-premises station.
Background
With the improvement of living standard of people, the requirements of people on indoor environment are higher and higher. Air conditioners are widely used. The multi-split air conditioner is widely applied due to simple and flexible use, and accounts for more than 50% of the market capacity of the central air conditioner. Therefore, technical means are needed to further improve the energy efficiency of the multi-split air-conditioning system and reduce the energy consumption of the multi-split air-conditioning system. According to the refrigeration cycle principle, under the condition that other conditions are not changed, the condensation temperature of the refrigeration cycle is reduced, and the refrigeration cycle efficiency can be improved; meanwhile, according to the existing practical experience, the building is in a partial load state in most of the time, and the type selection of the air conditioning system is generally configured according to the maximum load of the building, so that the air conditioning system is operated in the partial load state in most of the time. For the multi-split air conditioning system, since the outdoor unit is composed of a plurality of modules, only some outdoor unit modules are operated and other outdoor unit modules are not operated in most of the time. According to the knowledge of heat transfer science, the increase of the heat exchange area is a measure for improving the heat exchange capacity, so that the heat exchange area of the condenser of the outdoor unit module which is not operated can not be recycled and the condensation heat exchange efficiency can not be improved under the condition of partial load.
SUMMERY OF THE UTILITY MODEL
The utility model provides a many online outdoor units of multitube system, the purpose is that the off-premises station module of solving prior art is when the part load, and the condenser heat transfer area of the off-premises station module that does not operate obtains reuse, can't improve the problem of condensation heat exchange efficiency, through make full use of the condenser heat transfer area of the off-premises station module that does not operate, improves condensation heat exchange efficiency, reduces refrigeration cycle's condensation temperature, improves many online air conditioning system's efficiency.
The utility model discloses specifically include following scheme:
the utility model provides a multi-pipe multi-split air conditioner outdoor unit, which comprises an operating outdoor unit module and a non-operating outdoor unit module, wherein the operating outdoor unit module and the non-operating outdoor unit module respectively comprise a compressor, a first electronic expansion valve, a second electronic expansion valve and a condenser; the refrigerant gas outlet of the compressor of the running outdoor unit module is divided into two paths, wherein one path is communicated and connected with the refrigerant inlet of the first electronic expansion valve of the running outdoor unit module, and the other path is communicated and connected with the refrigerant inlet of the second electronic expansion valve of the running outdoor unit module; a refrigerant outlet of a first electronic expansion valve of the running outdoor unit module is communicated and connected with a refrigerant inlet of a condenser of the running outdoor unit module; a refrigerant outlet of a second electronic expansion valve of the running outdoor unit module is respectively communicated and connected with a refrigerant inlet of a condenser of the non-running outdoor unit module through the second electronic expansion valve and the first electronic expansion valve of the non-running outdoor unit module; the condenser of the running outdoor unit module and the refrigerant outlet of the condenser of the non-running outdoor unit module are both communicated and connected with the refrigerant inlet of the indoor unit side, the refrigerant outlet of the indoor unit side is communicated and connected with the refrigerant inlet of the indoor unit heat exchanger, and the refrigerant outlet of the indoor unit heat exchanger is communicated and connected with the refrigerant inlet of the compressor of the running outdoor unit module.
The utility model discloses a many on-line units of multitube system off-premises station, the quantity of operation off-premises station module is at least two. The number of the non-operating outdoor unit modules is at least two.
The utility model discloses a multi-pipe system multi-connected outdoor unit, when the building is in the partial load, only the operation off-premises station module is in the running state, and other non-operation off-premises station modules are in standby state, and the compressor of non-operation off-premises station module under the standby state does not operate. The flow paths of the refrigerant at this time are: the high-temperature and high-pressure gas discharged by the compressor of the outdoor unit module is divided into two paths. One path of the heat is condensed and released in a condenser through a first electronic expansion valve, and the electronic expansion valve plays a role in regulating flow; and the other path of the refrigerant enters the non-operating outdoor unit module in the standby state through the second electronic expansion valve, then flows through the second electronic expansion valve and the first electronic expansion valve of the non-operating outdoor unit module in the standby state, then enters the condenser of the non-operating outdoor unit module in the standby state, and is condensed to release heat in the condenser of the non-operating outdoor unit module in the standby state. After condensation and heat release in all condensers of the operating outdoor unit module and the non-operating outdoor unit module, the heat is uniformly sent to the indoor unit side, is throttled and cooled, and is evaporated and absorbed in the indoor unit heat exchanger and then returns to the compressor of the operating outdoor unit module. In the process, only the compressor of the outdoor unit module is operated, and the heat exchange area of the condenser is the area of all the condensers of the outdoor unit module and the non-outdoor unit module; thereby reducing the condensation temperature and improving the efficiency of the refrigeration cycle.
It should be noted that although the compressor of the non-operating outdoor unit module is not operated, the outdoor unit fan of the non-operating outdoor unit module is operated.
Preferably, the open states or valve opening ratios of the first and second electronic expansion valves of the non-operating outdoor unit module are controlled such that the outdoor unit fan corresponding to the non-operating outdoor unit module is in an operating state when only the first and second electronic expansion valves of the non-operating outdoor unit module are in the open states.
Furthermore, a refrigerant gas outlet of the compressor of the running outdoor unit module is divided into two paths through a four-way valve.
Then the utility model discloses a many on-line units of multitube system off-premises station, the compressor exhaust high temperature high pressure gas stream of operation off-premises station module divide into two tunnel behind the cross valve.
Furthermore, the other path of the refrigerant gas outlet of the compressor of the running outdoor unit module is communicated and connected with the condenser of the non-running outdoor unit module through a high-pressure gas pipe, and the second electronic expansion valve of the running outdoor unit module, the second electronic expansion valve of the non-running outdoor unit module and the first electronic expansion valve are sequentially arranged on the high-pressure gas pipe.
Furthermore, in the operating outdoor unit module and the non-operating outdoor unit module, a refrigerant outlet of the compressor is connected with the four-way valve through a one-way valve.
Further, a check valve is arranged at the outlet of the compressor.
And in the operating outdoor unit module and the non-operating outdoor unit module, a refrigerant outlet of the condenser is communicated and connected with a refrigerant inlet of the indoor unit through a high-pressure liquid pipe.
The refrigerant outlet of the indoor unit is connected to the refrigerant inlet of the gas-liquid separator, and the refrigerant outlet of the gas-liquid separator is connected to the refrigerant inlet of the compressor.
Furthermore, a refrigerant outlet of the indoor unit is communicated and connected with a refrigerant inlet of the gas-liquid separator through a four-way valve.
Furthermore, a refrigerant outlet of the indoor unit is communicated and connected with a refrigerant inlet of the gas-liquid separator through a low-pressure gas pipe, and a refrigerant outlet of the gas-liquid separator is communicated and connected with a refrigerant inlet of the compressor through a low-pressure gas pipe.
The utility model has the advantages that:
the utility model discloses a many online outdoor units of multitube system can solve prior art's off-premises station module when the part load, the condenser heat transfer area of the off-premises station module that does not operate can not obtain reuse, can't improve condensation heat exchange efficiency's problem, can be in the condenser heat transfer area of the off-premises station module that does not operate under the standby condition through make full use of, improve condensation heat exchange efficiency, reduce refrigeration cycle's condensing temperature, the operation efficiency of many online air conditioning system under the improvement part load.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic structural view of the multi-system multi-split outdoor unit of the present invention.
Fig. 2 is a pressure-enthalpy diagram of the refrigerant.
The solid arrows at the various lines in fig. 1 show the refrigerant flow direction.
In the drawing, 101 is a first outdoor unit module, 102 is a second outdoor unit module, 103 is a third outdoor unit module, 1 is a compressor, 2 is a first electronic expansion valve, 3 is a second electronic expansion valve, 4 is a condenser, 5 is an outdoor unit fan, 6 is a four-way valve, 7 is a high-pressure gas pipe, 8 is a gas-liquid separator, 9 is a one-way valve, 10 is a low-pressure gas pipe, 11 is a high-pressure gas pipe, 12 is an indoor unit, and 13 is a branch pipe.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1, the multi-pipe multi-split outdoor unit of the present invention mainly comprises: the air conditioner comprises a compressor 1, a first electronic expansion valve 2, a second electronic expansion valve 3, a condenser 4, an outdoor unit fan 5, a low-pressure air pipe 10, a high-pressure liquid pipe 11, a high-pressure air pipe 7, a gas-liquid separator 8, a one-way valve 9 and the like. The energy saving principle is illustrated as an example: the outdoor unit 12 is composed of three outdoor unit modules, which are a first outdoor unit module 101, a second outdoor unit module 102, and a third outdoor unit module 103. When the building is under partial load, only the first outdoor unit module 101 is in an operating state, and the other outdoor unit modules are in a non-operating standby state, and the compressor 1 is not operated in the standby state. The flow paths of the refrigerant at this time are: the high-temperature and high-pressure gas discharged from the compressor 1 is divided into two paths after passing through the four-way valve 6. One path of the heat is condensed and released by entering a condenser through a first electronic expansion valve 2, wherein the first electronic expansion valve 1 plays a role in regulating the flow; the other path of the refrigerant enters the high pressure gas pipe 7 through the second electronic expansion valve 3, then enters the high pressure gas pipe 7 of the second outdoor unit module 102 and the third outdoor unit module 103, then flows through the second electronic expansion valve 3 and the first electronic expansion valve 2 of the second outdoor unit module 102 and the third outdoor unit module 103, then enters the condenser 4 of the second outdoor unit module 102 and the third outdoor unit module 103, and is condensed and releases heat in the condenser 4 of the second outdoor unit module 102 and the third outdoor unit module 103. After condensing and releasing heat in the condensers 4 of the three outdoor unit modules, the condensed and released heat is uniformly sent to the indoor unit 12 side, is throttled and cooled, and is evaporated and absorbed heat in the indoor unit heat exchanger and then returns to the compressor 1 of the first outdoor unit module 101. In this process, only one compressor 1 of the first outdoor unit module 101 in the operating state is operated, and the heat exchange area of the condenser 4 is the total area of the condensers 4 of the three outdoor unit modules, so that the condensing temperature is reduced, and the refrigeration cycle efficiency is improved. It should be added that although the compressors 1 of the second outdoor unit module 102 and the third outdoor unit module 103 are not operated, the outdoor unit fans 5 of the second outdoor unit module 102 and the third outdoor unit module 103 are operated. Preferably, the opening states or valve opening ratios of the first electronic expansion valve 2 and the second electronic expansion valve 3 of the second outdoor unit module 102 and the third outdoor unit module 103 may be controlled, and the outdoor unit fan 5 of the corresponding outdoor unit module may be operated only when the first electronic expansion valve 2 and the second electronic expansion valve 3 of the outdoor unit module are in the opening states.
As shown in fig. 2, the multi-system multi-split outdoor unit of the above embodiment expresses the energy saving principle in the pressure-enthalpy diagram: the circulation process of the conventional multi-split air-conditioning refrigeration cycle in the pressure-enthalpy diagram is I-II-III-IV-I, while the refrigeration cycle process of the embodiment is I-V-VI-VII-I, and as can be seen from the pressure-enthalpy diagram, after the technology of the embodiment is adopted, the condensation pressure of the refrigeration cycle is reduced, the theoretical power consumption of the compressor 1 is reduced, the refrigerating capacity of unit refrigerant flow is increased, and the refrigeration cycle efficiency is improved.
In fig. 1, the multi-system multi-split outdoor unit of the above embodiment mainly takes the first outdoor unit module 101 as an example, the thick solid line represents the high-pressure gas pipe 7, and the refrigerant in the high-pressure gas pipe 7 is in a high-temperature high-pressure gas state; the thick dotted line represents the high-pressure liquid pipe 11, and the state of the refrigerant in the high-pressure liquid pipe 11 is high-temperature high-pressure liquid; the thick dotted line represents the low pressure gas pipe 10, and the state of the refrigerant in the low pressure gas pipe 10 is a low temperature and low pressure gas.
The other path of the refrigerant outlet of the compressor 1 of the running outdoor unit module is connected to the condenser 4 of the non-running outdoor unit module through a high-pressure air pipe 7, and the second electronic expansion valve 3 of the running outdoor unit module, the second electronic expansion valve 3 of the non-running outdoor unit module, and the first electronic expansion valve 2 are sequentially disposed on the high-pressure air pipe 7.
Further, in the operating outdoor unit module and the non-operating outdoor unit module, a refrigerant outlet of the compressor 1 is connected with the four-way valve 6 through a check valve 9.
Further, a check valve 9 is provided at the outlet of the compressor 1.
In the operating outdoor unit module and the non-operating outdoor unit module, the refrigerant outlet of the condenser 4 is connected to the refrigerant inlet of the indoor unit 12 through the high pressure liquid pipe 11.
The refrigerant outlet of the indoor unit 12 is connected to the refrigerant inlet of the gas-liquid separator 8, and the refrigerant outlet of the gas-liquid separator 8 is connected to the refrigerant inlet of the compressor 1.
Further, a refrigerant outlet of the indoor unit 12 is connected to a refrigerant inlet of the gas-liquid separator 8 through the four-way valve 6.
The low-temperature and low-pressure refrigerant from the room flows through the low-pressure gas pipe 10 to the four-way valve 6, then enters the gas-liquid separator 8, and then enters the compressor 1 as a suction port of the refrigerant inlet.
Furthermore, a refrigerant outlet of the indoor unit 12 is connected to a refrigerant inlet of the gas-liquid separator 8 through a low-pressure gas pipe 10, and a refrigerant outlet of the gas-liquid separator 8 is connected to a refrigerant inlet of the compressor 1 through a low-pressure gas pipe 10.
Furthermore, a high-pressure liquid pipe 11 connecting the refrigerant outlet of the condenser 4 and the refrigerant inlet of the indoor unit 12 is provided with a branch pipe 13.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A multi-pipe system multi-split air conditioner outdoor unit comprises an operating outdoor unit module and a non-operating outdoor unit module, and is characterized in that the operating outdoor unit module and the non-operating outdoor unit module respectively comprise a compressor, a first electronic expansion valve, a second electronic expansion valve and a condenser; the refrigerant gas outlet of the compressor of the running outdoor unit module is divided into two paths, wherein one path is communicated and connected with the refrigerant inlet of the first electronic expansion valve of the running outdoor unit module, and the other path is communicated and connected with the refrigerant inlet of the second electronic expansion valve of the running outdoor unit module; a refrigerant outlet of a first electronic expansion valve of the running outdoor unit module is communicated and connected with a refrigerant inlet of a condenser of the running outdoor unit module; a refrigerant outlet of a second electronic expansion valve of the running outdoor unit module is respectively communicated and connected with a refrigerant inlet of a condenser of the non-running outdoor unit module through the second electronic expansion valve and the first electronic expansion valve of the non-running outdoor unit module; the condenser of the running outdoor unit module and the refrigerant outlet of the condenser of the non-running outdoor unit module are both communicated and connected with the refrigerant inlet of the indoor unit side, the refrigerant outlet of the indoor unit side is communicated and connected with the refrigerant inlet of the indoor unit heat exchanger, and the refrigerant outlet of the indoor unit heat exchanger is communicated and connected with the refrigerant inlet of the compressor of the running outdoor unit module.
2. The outdoor unit of claim 1, wherein the number of the outdoor unit modules is at least two.
3. The outdoor unit of claim 1, wherein the number of the non-operating outdoor unit modules is at least two.
4. The outdoor unit of claim 1, wherein the outdoor unit fans of the non-operational outdoor unit modules are in an operational state.
5. The outdoor unit of claim 1, wherein the open states or valve opening ratios of the first and second electronic expansion valves of the non-operating outdoor unit module are controlled such that the outdoor unit fan of the non-operating outdoor unit module operates only when the first and second electronic expansion valves of the non-operating outdoor unit module are in the open states.
6. The outdoor unit of claim 1, wherein the refrigerant outlet of the compressor of the outdoor unit module is divided into two paths by a four-way valve.
7. The outdoor unit of claim 1, wherein the other refrigerant outlet of the compressor of the outdoor unit module is connected to the condenser of the outdoor unit module through a high pressure pipe, and the second electronic expansion valve of the outdoor unit module, and the first electronic expansion valve are sequentially installed on the high pressure pipe.
8. The outdoor unit of claim 6, wherein the refrigerant outlet of the compressor is connected to a four-way valve through a check valve in the outdoor unit module of the outdoor unit of the on-running type and the outdoor unit module of the off-running type.
9. The outdoor unit of claim 1, wherein the refrigerant outlet of the condenser of the outdoor unit module is connected to the refrigerant inlet of the indoor unit through a high pressure liquid pipe.
10. The outdoor unit of claim 1, wherein the refrigerant outlet of the indoor unit is connected to the refrigerant inlet of the gas-liquid separator through a low pressure pipe, and the refrigerant outlet of the gas-liquid separator is connected to the refrigerant inlet of the compressor through a low pressure pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121518518.6U CN215216488U (en) | 2021-07-06 | 2021-07-06 | Multi-pipe system multi-split air conditioner outdoor unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121518518.6U CN215216488U (en) | 2021-07-06 | 2021-07-06 | Multi-pipe system multi-split air conditioner outdoor unit |
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| CN215216488U true CN215216488U (en) | 2021-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375235A (en) * | 2021-07-06 | 2021-09-10 | 青岛腾远设计事务所有限公司 | Multi-pipe system multi-split air conditioner outdoor unit |
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2021
- 2021-07-06 CN CN202121518518.6U patent/CN215216488U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375235A (en) * | 2021-07-06 | 2021-09-10 | 青岛腾远设计事务所有限公司 | Multi-pipe system multi-split air conditioner outdoor unit |
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