WO2011147195A1 - 螺杆式风冷冷水机组及其制冷工作方法 - Google Patents

螺杆式风冷冷水机组及其制冷工作方法 Download PDF

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Publication number
WO2011147195A1
WO2011147195A1 PCT/CN2011/000886 CN2011000886W WO2011147195A1 WO 2011147195 A1 WO2011147195 A1 WO 2011147195A1 CN 2011000886 W CN2011000886 W CN 2011000886W WO 2011147195 A1 WO2011147195 A1 WO 2011147195A1
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Prior art keywords
heat exchanger
tube
shell
compressor
expansion valve
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PCT/CN2011/000886
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English (en)
French (fr)
Inventor
张平
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广东欧科空调制冷有限公司
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Application filed by 广东欧科空调制冷有限公司 filed Critical 广东欧科空调制冷有限公司
Priority to US13/265,596 priority Critical patent/US20130061610A1/en
Publication of WO2011147195A1 publication Critical patent/WO2011147195A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/21—Modules for refrigeration systems

Definitions

  • the invention relates to the technical field of central air conditioning application, in particular to a cooling working method of a screw air-cooled chiller and a heat exchanger thereof.
  • the central air conditioner Due to its high power, high efficiency, environmental protection, energy saving, excellent performance, stability and reliability, the central air conditioner is widely used in various large buildings such as hotels, conference halls, buildings and factories.
  • the central air conditioner mainly consists of four parts: a compressor, a condenser, an evaporator and a throttle.
  • the condenser and the 3 ⁇ 4 generator are collectively referred to as a heat exchanger, and are devices that output cooling capacity or quantity.
  • the basic structure of the main unit is that the above four parts are connected in series to form a closed circuit, that is, the compressor is connected to the condenser, the condenser is connected as an expansion valve of the throttle, the expansion valve is connected to the evaporator, and the evaporator is connected to the compressor.
  • the working process of the main machine is carried out according to the following circulation circuit: the compressor one-to-one condenser-one expansion valve-one evaporator returns to the compressor one by one.
  • the shell-and-tube heat exchanger is provided with two tubes. When cooling, the refrigerant liquid enters from the second tube, and the first tube is responsible for exhausting; when heating, the gas enters from the first tube, and the liquid is discharged from the second tube.
  • the invention aims at the defects of the prior art, and provides a screw type air-cooled chiller with more convenient installation, transportation, more energy efficiency and more stable operation. .
  • a screw type air-cooled chiller including a chassis, a compressor, a shell and tube heat exchanger, a finned heat exchanger, an expansion valve, and a control cabinet
  • the compressor, shell and tube heat exchanger and control cabinet are all mounted on the chassis, the expansion valve is connected between the compressor and the shell and tube heat exchanger, and the finned heat exchanger is arranged on the upper part of the unit, and the control cabinet is set.
  • the shell-and-tube heat exchanger On the side of the unit; the shell-and-tube heat exchanger is provided with a first tube and a second tube, the shell-and-tube heat exchanger is connected to the compressor through the first tube, and the shell-and-tube heat exchanger is connected to the expansion tube by the second tube;
  • the chassis is composed of a longitudinal bracket and a lateral bracket.
  • the longitudinal bracket is provided with a column, wherein: the expansion valve is connected with a header, and the heat exchange tube in the finned heat exchanger is directly connected with the header, and the header is in turn
  • the liquid outlet of the liquid storage tank is connected through the distribution head and the expansion valve, and the liquid inlet of the liquid storage tank is connected with the third tube of the shell and tube heat exchanger, and the third tube of the shell and tube heat exchanger is disposed in the second tube Below;
  • the door of the control cabinet is linked to the internal connection Power switch box, arranged to open the door while the power switch off, the door closed while the power switch is turned on.
  • an oblique support is arranged between the longitudinal bracket and the column of the chassis, and the oblique support can effectively strengthen the structural strength of the chassis by using a triangular principle; the outer side of the longitudinal bracket is provided with a lifting ring, and the lifting ring is convenient for tying the steel rope or the hanging hook This makes it easier to lift the unit.
  • a wire slot is arranged in the upper part of the unit, and the power line for connecting the fan is arranged in the line slot, and the centralized wiring makes the whole unit more tidy and beautiful, and the maintenance is more convenient.
  • a transparent liquid visual tube connected to the inside of the tank body is disposed outside the tank body of the liquid storage tank, and the refrigerant quantity in the liquid storage tank can be observed in real time through the liquid sight tube, the working condition of the machine is grasped, and the machine is kept running smoothly.
  • a junction box is installed inside the cabinet door of the control cabinet, and a back box and a bottom surface of the junction box are opened; when the unit is installed, the junction box cover is disposed at the wiring hole, and the bottom surface opening is downwardly disposed, and the junction box can be prevented from being lowered.
  • Rainwater enters the control cabinet during rain.
  • the cooling working method of the screw type air-cooled chiller comprises: the compressor will liquid the refrigerant compressor high temperature and high pressure gas, the gaseous refrigerant then enters the finned heat exchanger, and is replaced in the finned heat exchanger
  • the heat pipe condenses into a liquid refrigerant, and the liquid refrigerant flows into the header directly from the heat exchange tube without flowing through the capillary tube in the heat exchange tube, and then is discharged from the drain pipe of the header, and finally returns to the compressor, thus completing A loop.
  • the invention adds a liquid storage tank and a header to the air conditioning unit, adds a third tube to the shell and tube heat exchanger, and provides a diagonal support, a lifting ring, an oblique support, and a junction box, thereby making the invention energy-efficient, work stable, Equipment safety and other aspects have been greatly improved, and the maintenance, installation and handling of equipment have become more convenient, which is conducive to the promotion and application of central air conditioning.
  • Figure 1 is a perspective structural view of the present invention
  • Figure 2 is an internal structural view of the present invention
  • Figure 3 is a rear view of the present invention.
  • Figure 4 is a partial schematic view of the heat exchanger.
  • 1 is the chassis
  • 11 is the longitudinal bracket
  • 12 is the column
  • 13 is the diagonal support
  • 14 is the lifting ring
  • 2 is the compressor
  • 3 is the shell-and-tube heat exchanger
  • 31 is the first tube
  • 32 is the second tube 33 is the third tube
  • 4 is the finned heat exchanger
  • 41 is the heat exchange tube
  • 42 is the capillary tube
  • 5 is the wire trough
  • 6 is the control cabinet
  • 7 is the expansion valve
  • 8 is the liquid storage tank
  • 9 is the set tube.
  • a screw chiller including a chassis 1, a compressor 2, a shell and tube heat exchanger 3, a finned heat exchanger 4, and an expansion valve.
  • the control cabinet 6, the compressor 2, the shell and tube heat exchanger 3, and the control cabinet 6 are all mounted on the chassis 1, and the expansion valve 7 is connected between the compressor 2 and the shell and tube heat exchanger 3, and is finned.
  • the heat exchanger 4 is arranged at the upper part of the unit, the control cabinet 6 is arranged at the side of the unit; the shell tube heat exchanger 3 is provided with a first tube 31 and a second tube 32, and the shell and tube heat exchanger 3 passes through the first tube 31.
  • the second tube 32 is connected to the expansion valve 7;
  • the chassis 1 is composed of a longitudinal bracket 11 and a lateral bracket, and the longitudinal bracket 11 is provided with a column 12;
  • the expansion valve 7 is connected with a header, a shell-and-tube heat exchanger
  • the heat exchange tube in 3 is directly connected to the header, the header is connected to the liquid inlet of the liquid storage tank 8, and the liquid outlet of the liquid storage tank 8 is connected with the third tube 33 of the shell and tube heat exchanger 3, the shell tube
  • the third tube 33 of the heat exchanger 3 is disposed under the second tube 32;
  • the door handle of the control reject 6 is linked to the power switch of the internal power box, and is set to turn off the power while opening the door Off, the door closed while the power switch is turned on.
  • An oblique support 13 is disposed between the longitudinal bracket 11 and the column 12 of the chassis 1.
  • the oblique support 13 can effectively enhance the structural strength of the chassis 1 by using a triangular principle; the outer side of the longitudinal bracket 11 is provided with a lifting ring 14, and the lifting ring 14 is convenient. Tied steel rope or hanging hooks make it easier to lift the unit.
  • the power cable for connecting the fan is set in the line slot 5.
  • the centralized wiring makes the whole unit more tidy and beautiful, and the maintenance is more convenient.
  • the outer surface of the tank of the liquid storage tank 8 is provided with a transparent liquid visual tube (not shown) connected to the inside of the tank body, and the amount of refrigerant in the liquid storage tank 8 can be observed in real time through the liquid sight tube, and the working condition of the machine is grasped. Keep the machine running smoothly.
  • junction box (not shown) installed inside the cabinet door of the control cabinet 6, the back side and the bottom surface of the junction box are open; when the unit is installed, the junction box cover is disposed at the wiring hole, and the bottom surface is open toward Set the ⁇ junction box to: I o Rainwater enters the control during rain.
  • the screw method of the chiller including the compressor 2 compresses the high-temperature and high-pressure gas in the 3 ⁇ 4 state refrigerant, and the gaseous refrigerant then enters the fin-type converter 4, and is in the wing
  • the heat exchanger tube 41 of the chip heat exchanger 4 is condensed into a liquid refrigerant, and the tt3 ⁇ 4 refrigerant does not flow through the capillary tube during the exchange : :4 : but directly from the heat exchange tube 41: the inner tube 902 ⁇ 4 row The liquid f 3 ⁇ 43 ⁇ 4, . , and finally back to the compressor 2, this complete cycle. :

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Description

说 明 书 螺杆式风冷冷水机组及其制冷工作方法 技术领域
本发明涉及中央空调应用技术领域，尤其涉及一种螺杆式风冷冷 水机组及其换热器的制冷工作方法。 背景技术
由于中央空调功率大、效能高、环保节能、性能优良、稳定可靠， 因此被广泛应用于各种酒店、 会场、 大厦、 工厂等大型建筑。 中央空 调主要包括四大部分： 压缩机、 冷凝器、 蒸发器和节流器， 其中， 冷 凝器和 ¾发器统称为换热器，是输出冷量或 ^量的设备。 另外还有相 关辅助设备，包括承载整个机组的底盘、安装机组控制部件的控制柜、 承载风机的风机架等。主机的基本结构为前述四大部分串联构成一个 闭合回路， 即压缩机连接冷凝器， 冷凝器连接作为节流器的膨胀阀， 膨胀阀连接蒸发器， 蒸发器连接压缩机。 主机工作过程按照如下循环 回路进行的：压缩机一一冷凝器一一膨胀阀一一蒸发器一一返回压缩 机。 壳管.式换热器上设有两根管， 制冷时， 制冷液从第二管进入， 第 一管负责排气； 制热时， 气体从第一管进入， 液体从第二管排出， 然 而这样的结构经常导致换热器内还会存储过多的液体，降低换热器的 效率， 增加能耗， 甚至影响机组的正常工作。 然而， 目前的中央空调 机组在许多设计上都存在缺陷， 如安装吊运不够方便， 底盘的强度不 够高，机组运行稳定性不够高，机组的能效不够理想，耗能较高等等。 发明内容
本发明针对现有技术的缺陷，提供一种安装运输更为方便、 能效 更高、 运行更稳定的螺杆式风冷冷水机组。 .
为解决上述技术问题， 本发明釆用如下技术方案： 一种一种螺杆 式风冷冷水机组， 包括底盘、 压缩机、 壳管式换热器、 翅片式换热器 和膨胀阀、控制柜，压缩机、壳管式换热器、控制柜都安装在底盘上， 膨胀阀连接在压缩机和壳管式换热器之间，翅片式换热器设在机组的 上部， 控制柜设在机组侧面； 壳管式换热器上设有第一管和第二管， 壳管式换热器通过第一管连接压缩机，壳管式换热器由第二管连接膨 胀闽； 其中底盘由纵向支架和横向支架构成， 纵向支架上设有立柱， 其特征在于： 所述膨胀阀连接有集管，翅片式换热器内的换热管直接 和集管相连通， 集管依次通过分配头、 膨胀阀连接储液罐的出液口， 储液罐的进液口和壳管式换热器的第三管相连,壳管式换热器的第三 管设在第二管的下方；所述控制柜的柜门拉手联动连接内部电源盒的 电源开关， 设置成在打开柜门的同时关闭电源开关， 关上柜门的同时 将电源开关接通。
进一步地， 所述底盘的纵向支架和立柱之间设有有斜支撑， 斜支 撑利用三角形原理， 能够有效加强底盘的结构强度； 纵向支架的外侧 面设有吊环，吊环方便绑钢绳或者挂挂钩，使得在吊装机组时更方便。
进一步地， 在机组上部设有线槽， 连接风机用的电源线设置在线 槽内， 集中布线使得整个机组更整齐美观， 维护也更为方便。
进一步地,所述储液罐的罐体外面设有一连接罐体内部的透明视 液管， 通过视液管可以实时观测到储液罐内的制冷剂量， 掌握机器的 工作状况， 保持机器平稳运行。 进一步地，在所述控制柜的柜门内部装设有的接线盒，接线盒背 面和底面开口； 在安装机组时接线盒罩设在接线孔处， 底面开口朝下 设置， 接线盒可以防止下雨时控制柜内进入雨水。
所述螺杆式风冷冷水机组的制冷工作方法,包括压缩机将液态的 制冷剂压缩机高温高压气体， 气态的制冷剂随后进入翅片式换热器， 并在翅片式换热器的换热管内冷凝成液态的制冷剂，液态的制冷剂在 换热管内不流经毛细管而直接由换热管流入到集管内，然后从集管的 排液管排出， 最后回到压缩机， 如此完成一个循环。
本发明通过给空调机组增设储液罐、集管， 给壳管式换热器增加 第三管， 以及设置斜支撑、 吊环、 斜支撑、 接线盒， 从而使本发明在 能效、 工作稳定性、 设备安全性等方面得到了极大的提高， 也使设备 的维护、 安装、 搬运等变得更为便利， 有利于中央空调的推广应用。 附图说明
图 1为本发明立体结构图；
图 2为本发明内部结构图；
图 3为本发明后视图;
图 4为换热器局部示意图。
图中， 1为底盘， 11为纵向支架， 12为立柱， 13为斜支撑， 14 为吊环 , 2为压缩机， 3为壳管式换热器， 31为第一管， 32为第二管， 33为第三管， 4为翅片式换热器， 41为换热管， 42为毛细管， 5为 线槽， 6为控制柜， 7为膨胀阀， 8为储液罐， 9为集管。 具体实施方式 本实施翁中 Γ参照图 1、 图 2和图 3, Λ述螺杵 ¾Κ冷冷水机组, 包括底盘 1、压缩机 2、壳管式换热器 3、翅片式换热器 4和膨胀阀 7、 控制柜 6 , 压缩机 2、 壳管式换热器 3、 控制柜 6都安装在底盘 1上， 膨胀阀 7连接在压缩机 2和壳管式换热器 3之间，翅片式换热器 4设 在机组的上部， 控制柜 6设在机组侧面； 壳管式换热器 3上设有第一 管 31和第二管 32 , 壳管式换热器 3通过第一管 31连接压缩机 2， 第 二管 32连接膨胀阀 7 ; 底盘 1由纵向支架 11和横向支架构成， 纵向 支架 11上设有立柱 12; 所述膨胀阀 7连接有集管， 壳管式换热器 3 内的换热管直接和集管相连通， 集管连接储液罐 8的进液口， 储液罐 8的出液口和壳管式换热器 3的第三管 33相连， 壳管式换热器 3的 第三管 33设在第二管 32的下方；所述控制拒 6的柜门拉手联动连接 内部电源盒的电源开关， 设置成在打开柜门的同时关闭电源开关， 关 上柜门的同时将电源开关接通。
所述底盘 1的纵向支架 11和立柱 12之间设有有斜支撑 13 , 斜 支撑 13利用三角形原理， 能够有效加强底盘 1的结构强度; 纵向支 架 11的外侧面设有吊环 14， 吊环 14方便绑钢绳或者挂挂钩， 使得 在吊装机组时更方便。 - 在机组上部设有线槽 5 , 连接风机用的电源线设置在线槽 5内， 集中布线使得整个机组更整齐美观， 维护也更为方便。
所述储液罐 8的罐体外面设有一连接罐体内部的透明视液管（未 图示）， 通过视液管可以实时观测到储液罐 8内的制冷剂量， 掌握机 器的工作状况， 保持机器平稳运行。
在所述控制柜 6的柜门内部装设有的接线盒（未图示）， 接线盒 背面和底面开口； 在安装机组时接线盒罩设在接线孔处， 底面开口朝 设置^接线盒 以: I o 雨时雨水进入控 内。
¾¾图^，：所述螺杆 ^ ^冷水机组的 ^土作方法, 包括压缩机 2 将¾态 ^制冷剂压缩 高温高压气体，气态的制冷剂随后进入翅片式 换¾器 4， 并在翅片式换热器 4的换热管 41内冷凝成液态的制冷剂， tt¾制冷剂在换 内不流经毛细管 ::4 :而是直接由换热管 41 流 霄 管 :9内 管 90¾排液 f ¾¾, . ,最后回到压缩机 2 , 此完 个循环。：

Claims

权利要求书
1. 一种螺杆式风冷冷水机组， 包括底盘、 压缩机、 壳管式换热 器和翅片式换热器、 膨胀阀、 控制柜， 压缩机、 壳管式换热器、 控制 柜都安装在底盘上， 膨胀阀连接在压缩机和壳管式换热器之间， 翅片 式换热器设在机组的上部， 控制柜设在机组侧面； 壳管式换热器上设 有第一管和第二管， 壳管式换热器通过第一管连接压缩机， 壳管式换 热器由笫二管连接膨胀阀； 其中底盘由纵向支架和横向支架构成， 纵 向支架上设有立柱， 其特征在于: 所述膨胀阀连接有集管， 翅片式换 热器内的换热管直接和集管相连通， 集管依次通过分配头、膨胀闽连 接储液罐的出液口， 储液罐的进液口和壳管式换热器的第三管相连， 壳管式换热器的第三管设在第二管的下方；所述控制柜的柜门拉手联 动连接内部电源盒的电源开关，设置成在打开柜门的同时关闭电源开 关， 关上柜门的同时将电源开关接通。
2. 根据权利要求 1所述的螺杆式风冷冷水机组， 其特征在于： 所述底盘的纵向支架和立柱之间设有有斜支撑；纵向支架的外侧面设 有吊环。
3. 根据权利要求 1所述的螺杆式风冷冷水机组， 其特征在于： 在机组上部设有线槽， 连接风机用的电源线设置在线槽内。
4. 根据权利要求 1所述的螺杆式风冷冷水机组， 其特征在于： 所述储液罐的罐体外面设有一连接罐体内部的透明视液管。
5. 根据杈利要求 1所述的螺杆式风冷冷水机组， 其特征在于： 在所述控制柜的柜门内部装设有的接线盒， 接线盒背面和底面开口； 在安装机组时接线盒罩设在接线孔处， 底面开口朝下设置。
6. —种螺杆式风冷冷水机组的制冷工作方法， 包括压缩机将气 态的制冷剂压缩成高温高压气体，气态的制冷剂随后进入翅片式换热 器:,：并 翅片式换热器 換热管内冷凝成液 的制冷剂，其特征在于: gw 剂在换 ί内 流经毛细管:賀 直接由换热管流入到集 从集管的满 ^排出, 最后回 缩机， 如此完成一个循 环。
PCT/CN2011/000886 2010-05-26 2011-05-23 螺杆式风冷冷水机组及其制冷工作方法 WO2011147195A1 (zh)

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US13/265,596 US20130061610A1 (en) 2010-05-26 2011-05-23 Screw Type Wind-Chilling Water Chiller Unit and Refrigeration Method Thereof

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