CN203385256U - Multi-split air conditioner parallel connection module system for defrosting without shutdown - Google Patents

Multi-split air conditioner parallel connection module system for defrosting without shutdown Download PDF

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Publication number
CN203385256U
CN203385256U CN201320344961.5U CN201320344961U CN203385256U CN 203385256 U CN203385256 U CN 203385256U CN 201320344961 U CN201320344961 U CN 201320344961U CN 203385256 U CN203385256 U CN 203385256U
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CN
China
Prior art keywords
valve
module
defrosting
outlet
heat exchanger
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Application number
CN201320344961.5U
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Chinese (zh)
Inventor
游永生
杨兵
蒋立
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南京天加空调设备有限公司
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Priority to CN201320344961.5U priority Critical patent/CN203385256U/en
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Publication of CN203385256U publication Critical patent/CN203385256U/en

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Abstract

A multi-split air conditioner parallel connection module system for defrosting without shutdown comprises a plurality of parallel connection indoor units and a plurality of parallel connection outdoor units. Liquid pipes of the outdoor units are connected with the indoor units after being in parallel connection, air pipes of the indoor units are in parallel connection with air pipes of the outdoor units, and every outdoor unit mainly comprises a compressor (1), a four-way reversing valve (3), an outdoor heat exchanger (4), an electronic expansion valve module (5) and a gas-liquid separator (7). The multi-split air conditioner parallel connection module system is characterized in that a branch refrigerant is taken from an outlet of a check valve (2) at the position of a compressor outlet to be in bypass connection with an inlet of a defrosting solenoid valve (6), and an outlet of the defrosting solenoid valve (6) is connected with an outlet of the outdoor heat exchanger (4); by opening the defrosting solenoid valve (6) and closing the electronic expansion valve module (5), compressor heat is introduced to defrost the outdoor heat exchanger (4), the four-way reversing valve does not need switching, and accordingly defrosting without shutdown is achieved. The multi-split air conditioner parallel connection module system has the advantages that defrosting time is short, the four-way reversing valve does not need switching, and machine set stability is high.

Description

Do not shut down the multi-connected machine parallel module system of defrosting
Technical field
The utility model relates to a kind of air-conditioning technical, especially a kind of multi-connected machine system, specifically a kind of multi-connected machine parallel module system of not shutting down defrosting.
Background technology
During heating operation in the winter time; because outdoor environment temperature is low; outdoor heat exchanger (evaporimeter) surface often can be lower than below 0 ℃; so surface meeting frosting gradually; thickening along with frosting; the heating capacity of unit can reduce gradually, and indoor leaving air temp also reduces gradually, now just need to be defrosted.
Traditional domestic air conditioning or most fluorine system central air-conditioning producer are all the reverse cycle defrostings that adopts the switching four-way change-over valve, and Defrost operation is equivalent to refrigerating operaton, and following shortcoming is arranged: now indoor set is prevented the cold wind processing, stops heat supply, affects comfortableness.Indoor set heat exchanger now as evaporimeter to indoor cold scattering, the temperature in room descends; because most producers all adopt defrosting simultaneously, set, when the module in the parallel running module need to defrost, all modules all enter Defrost operation.Even the operation module made does not so need defrosting to be forced into Defrost operation yet, economy is not high; because reverse cycle defrosting is to adopt the switching of cross valve to realize, the high-low pressure of unit has the process of sudden change, large to the impact of system, easily causes generator protection; Simultaneously the noise of twice switching of cross valve is large, and the reliability of cross valve is had to higher requirement.
Summary of the invention
The purpose of this utility model must be defrosted during for existing multi-connected machine parallel operation or out of service and affect heating effect and need make the cross valve commutation work influence problem in service life simultaneously; design a kind of defrosting efficiency high; the multi-connected machine parallel module system of not shutting down defrosting that unit operation economy and comfortableness are good, to guarantee the reliability of unit operation.
This applicable novel technical scheme is:
A kind of multi-connected machine parallel module system of not shutting down defrosting, it is indoor set in parallel and several off-premises stations in parallel by several, after the liquid pipe parallel connection of each off-premises station, with each indoor set, link, the tracheae of each indoor set is in parallel with the tracheae of each off-premises station, described off-premises station mainly comprises compressor 1, four-way change-over valve 3, outdoor heat exchanger 4, electronic expansion valve module 5 and gas-liquid separator 7, compressor 1 is connected with the import of four-way change-over valve 3 by check valve 2, the C pipe of four-way change-over valve 3 is formed by connecting with outdoor heat exchanger 4, the refrigerant outlet of outdoor heat exchanger 4 is connected with electronic expansion valve module 5, the outlet of electronic expansion valve module 5 cold-producing mediums is connected with liquid valve 9, liquid valve 9 is connected with several throttling boxes 10 and corresponding indoor set 11 thereof respectively by several branch pipes, all indoor sets 11 are connected with air valve 8 by branch pipe merging separately is rear, air valve 8 is connected with the E pipe of four-way change-over valve 3, the S pipe of four-way change-over valve 3 is connected with the refrigerant inlet of gas-liquid separator 7, gas-liquid separator 7 refrigerant outlets are connected with the air entry of compressor 1, the outlet that it is characterized in that described check valve 2 divides the import of getting a branch road refrigerant bypass connection defrosting magnetic valve 6, the outlet of defrosting magnetic valve 6 is connected with the outlet of outdoor heat exchanger 4, by the defrosting unlatching of magnetic valve 6 and closing of electronic expansion valve module 5, introduce the compressor heat outdoor heat exchanger 4 is defrosted, thereby realize not shutting down defrosting without the switching cross valve.
Multiple module paralleling moves simultaneously, when wherein a module need to defrost, by the unlatching of defrosting magnetic valve 6, introduces compressor and is defrosted with the heat of all the other modules in parallel.
When multiple module paralleling moves simultaneously, wherein during a module Defrost operation, the normal heating operation of all the other modules, realize not shutting down defrosting.
When multiple module paralleling moves simultaneously, wherein during arbitrary module Defrost operation, cross valve is not switched in the module defrosting.
The beneficial effects of the utility model are:
When the multi-connected machine multimode is moved winter simultaneously, only need to open the defrosting magnetic valve when wherein a module need to defrost and can introduce the heat of self compressor and parallel module and defrosted, defrosting time is short, can improve defrosting efficiency; All the other modules normally heat simultaneously, and indoor set is protected without anti-cold wind, does not also need the temperature of absorption chamber inner room, has improved comfortableness; Without the switching cross valve, reduce meaningless cross valve " switching " noise, the stability of unit is improved.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is described in further detail.
As shown in Figure 1.
A kind of multi-connected machine parallel module system of not shutting down defrosting, it is indoor set in parallel and several off-premises stations in parallel by several, after the liquid pipe parallel connection of each off-premises station, with each indoor set, link, the tracheae of each indoor set is in parallel with the tracheae of each off-premises station, described off-premises station mainly comprises compressor 1, four-way change-over valve 3, outdoor heat exchanger 4, electronic expansion valve module 5 and gas-liquid separator 7, compressor 1 is connected with the import of four-way change-over valve 3 by check valve 2, four-way change-over valve 3) C pipe is formed by connecting with outdoor heat exchanger 4, the refrigerant outlet of outdoor heat exchanger 4 is connected with electronic expansion valve module 5, the outlet of electronic expansion valve module 5 cold-producing mediums is connected with liquid valve 9, liquid valve 9 is connected with several throttling boxes (10) and corresponding indoor set 11 thereof respectively by several branch pipes, all indoor sets 11 are connected with air valve 8 by branch pipe merging separately is rear, air valve 8 is connected with the E pipe of four-way change-over valve 3, the S pipe of four-way change-over valve 3 is connected with the refrigerant inlet of gas-liquid separator 7, gas-liquid separator 7 refrigerant outlets are connected with the air entry of compressor 1, the outlet of described check valve 2 divides gets the import that a branch road refrigerant bypass connects defrosting magnetic valve 6, the outlet of defrosting magnetic valve 6 is connected with the outlet of outdoor heat exchanger 4.In the winter time, in multi-connected machine multimode while heating process, when one of them module need to defrost, the defrosting magnetic valve 6 of this module is opened, and heats electronic expansion valve module 5 Close Alls simultaneously.Now the module of defrosting enters Defrost operation, and hot gas enters outdoor heat exchanger 4 by discharging sensible heat by the defrosting magnetic valve, hands over surperficial frost to melt gradually heat.The module that all the other operations heat normally heats, and the cold-producing medium of a heating module part also will increase the cold medium flux of defrosting by the defrosting magnetic valve 6 of the module that defrosted, and shorten defrosting time, improve defrosting efficiency.After defrosting, defrosting magnetic valve 6 cuts out, heat electronic expansion valve module 5 and reopen and enter heating operation, in whole defrost process without the switching cross valve.When other module need to defrost, repeat top step, be equivalent to defrost in turn, and the unit indoor set is heated all the time, the state in " not shutting down " does not affect comfort level.
The utility model does not relate to the part prior art that maybe can adopt same as the prior art to be realized.

Claims (4)

1. a multi-connected machine parallel module system of not shutting down defrosting, it is indoor set in parallel and several off-premises stations in parallel by several, after the liquid pipe parallel connection of each off-premises station, with each indoor set, link, the tracheae of each indoor set is in parallel with the tracheae of each off-premises station, described off-premises station mainly comprises compressor (1), four-way change-over valve (3), outdoor heat exchanger (4), electronic expansion valve module (5) and gas-liquid separator (7), compressor (1) is connected with the import of four-way change-over valve (3) by check valve (2), the C pipe of four-way change-over valve (3) is formed by connecting with outdoor heat exchanger (4), the refrigerant outlet of outdoor heat exchanger (4) is connected with electronic expansion valve module (5), the outlet of electronic expansion valve module (5) cold-producing medium is connected with liquid valve (9), liquid valve (9) is connected with several throttling boxes (10) and corresponding indoor set (11) thereof respectively by several branch pipes, all indoor sets (11) are connected with air valve (8) by branch pipe merging separately is rear, air valve (8) is connected with the E pipe of four-way change-over valve (3), the S pipe of four-way change-over valve (3) is connected with the refrigerant inlet of gas-liquid separator (7), gas-liquid separator (7) refrigerant outlet is connected with the air entry of compressor (1), the outlet that it is characterized in that described check valve (2) divides the import of getting a branch road refrigerant bypass connection defrosting magnetic valve (6), the outlet of defrosting magnetic valve (6) is connected with the outlet of outdoor heat exchanger (4), by the unlatching of defrosting magnetic valve (6) and closing of electronic expansion valve module (5), introduce the compressor heat outdoor heat exchanger (4) is defrosted, thereby realize not shutting down defrosting without the switching cross valve.
2. multi-connected machine parallel module system of not shutting down defrosting according to claim 1; it is characterized in that multiple module paralleling moves simultaneously; when wherein a module need to defrost, by the unlatching of defrosting magnetic valve (6), introduce compressor and defrosted with the heat of all the other modules in parallel.
3. multi-connected machine parallel module system of not shutting down defrosting according to claim 1 is characterized in that moving when multiple module paralleling simultaneously, and wherein during a module Defrost operation, the normal heating operation of all the other modules, realize not shutting down defrosting.
4. multi-connected machine parallel module system of not shutting down defrosting according to claim 1 is characterized in that moving when multiple module paralleling simultaneously, and wherein during arbitrary module Defrost operation, cross valve is not switched in the module defrosting.
CN201320344961.5U 2013-06-17 2013-06-17 Multi-split air conditioner parallel connection module system for defrosting without shutdown CN203385256U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104596147A (en) * 2015-01-26 2015-05-06 珠海格力电器股份有限公司 Multi-online system
CN105526773A (en) * 2014-10-21 2016-04-27 株式会社鹭宫制作所 Control device and control method of refrigerated storage
CN105865130A (en) * 2016-04-27 2016-08-17 青岛海尔股份有限公司 Constant-temperature refrigerator and control method thereof
CN109579346A (en) * 2018-11-27 2019-04-05 南京天加环境科技有限公司 A kind of multi-connected machine in parallel that refrigerant distributes in due course and its control method
CN109708216A (en) * 2018-12-06 2019-05-03 珠海格力电器股份有限公司 Modular multi-connected air conditioner system and its control method
CN109945330A (en) * 2019-03-22 2019-06-28 珠海格力电器股份有限公司 The refrigeration system and defrosting control method of energy continuous heating
CN110173821A (en) * 2019-05-29 2019-08-27 南京天加环境科技有限公司 A kind of multi-line system and its control method that can improve defrosting effect
CN110425686A (en) * 2019-08-09 2019-11-08 珠海格力电器股份有限公司 Air cooling module unit defrosting control method, computer installation and computer readable storage medium
CN110595094A (en) * 2019-09-30 2019-12-20 海信(广东)空调有限公司 Air conditioning system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105526773A (en) * 2014-10-21 2016-04-27 株式会社鹭宫制作所 Control device and control method of refrigerated storage
CN104596147A (en) * 2015-01-26 2015-05-06 珠海格力电器股份有限公司 Multi-online system
CN105865130A (en) * 2016-04-27 2016-08-17 青岛海尔股份有限公司 Constant-temperature refrigerator and control method thereof
CN109579346A (en) * 2018-11-27 2019-04-05 南京天加环境科技有限公司 A kind of multi-connected machine in parallel that refrigerant distributes in due course and its control method
CN109708216A (en) * 2018-12-06 2019-05-03 珠海格力电器股份有限公司 Modular multi-connected air conditioner system and its control method
CN109945330A (en) * 2019-03-22 2019-06-28 珠海格力电器股份有限公司 The refrigeration system and defrosting control method of energy continuous heating
WO2020192202A1 (en) * 2019-03-22 2020-10-01 珠海格力电器股份有限公司 Refrigeration system and defrosting control method
CN110173821A (en) * 2019-05-29 2019-08-27 南京天加环境科技有限公司 A kind of multi-line system and its control method that can improve defrosting effect
CN110425686A (en) * 2019-08-09 2019-11-08 珠海格力电器股份有限公司 Air cooling module unit defrosting control method, computer installation and computer readable storage medium
CN110425686B (en) * 2019-08-09 2020-10-27 珠海格力电器股份有限公司 Defrosting control method for air-cooled module unit, computer device and computer readable storage medium
CN110595094A (en) * 2019-09-30 2019-12-20 海信(广东)空调有限公司 Air conditioning system

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