CN102589204B - Refrigeration circulating system with separated heat pipe loop coupled with evaporator - Google Patents

Refrigeration circulating system with separated heat pipe loop coupled with evaporator Download PDF

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CN102589204B
CN102589204B CN201210065499.5A CN201210065499A CN102589204B CN 102589204 B CN102589204 B CN 102589204B CN 201210065499 A CN201210065499 A CN 201210065499A CN 102589204 B CN102589204 B CN 102589204B
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heat pipe
valve
circuit
refrigeration system
evaporator
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CN102589204A (en
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王基超
尚存存
张兴磊
王文
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Shanghai Jiao Tong University
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Abstract

一种具有与蒸发器耦合的分离型热管回路的制冷循环系统,涉及采用热管的制冷系统。其包含蒸发器1,其中,蒸发器1两端管路分别设有制冷系统气路阀3和制冷系统液路阀4;所述的制冷系统气路阀3与制冷系统液路阀4之间,与蒸发器1并联有热管管路2。所述的热管管路2包括,分离型热管23,热管回路气路阀21,以及热管回路液路阀22;所述的蒸发器1,热管回路气路阀21,热管回路液路阀22,以及分离型热管23共同构成热管回路。本发明提供的制冷循环系统,可以在内外温差较大时,切换为热管制冷循环,有效的降低了能耗,降低了经济成本;并且可以同时应用于蒸汽压缩式和吸收式制冷系统,值得推广普及。

A refrigeration cycle system with a separated heat pipe circuit coupled with an evaporator relates to a refrigeration system using heat pipes. It includes an evaporator 1, wherein the pipelines at both ends of the evaporator 1 are respectively provided with a refrigeration system air valve 3 and a refrigeration system liquid valve 4; , a heat pipe line 2 is connected in parallel with the evaporator 1 . The heat pipe circuit 2 includes a separate heat pipe 23, a heat pipe circuit air valve 21, and a heat pipe circuit liquid valve 22; the evaporator 1, a heat pipe circuit air valve 21, and a heat pipe circuit liquid valve 22, and the separated heat pipe 23 together constitute a heat pipe circuit. The refrigeration cycle system provided by the present invention can be switched to a heat pipe refrigeration cycle when the temperature difference between inside and outside is large, which effectively reduces energy consumption and economic costs; and can be applied to vapor compression and absorption refrigeration systems at the same time, which is worthy of popularization universal.

Description

一种具有与蒸发器耦合的分离型热管回路的制冷循环系统A refrigeration cycle system with a separate heat pipe loop coupled with an evaporator

技术领域 technical field

本发明涉及一种制冷系统,特别是涉及采用热管的制冷系统。The invention relates to a refrigeration system, in particular to a refrigeration system using a heat pipe.

背景技术 Background technique

很多需要进行制冷散热的场合为常年都具有一定热负荷封闭空间。但由于洁净、安全等要求,即使外界环境温度在0℃以下,也不能直接引入外界空气循环降温,因而制冷机组需要常年运行。常规的制冷机组都是按环境温度远高于冷冻水温度条件设计的。在较低的环境温度下,系统运行的可靠性、稳定性等存在多种问题。与此同时,由于室内室外温差较小,开启制冷机组能耗高,经济成本也很高。Many occasions that require cooling and heat dissipation are enclosed spaces with a certain heat load all year round. However, due to the requirements of cleanliness and safety, even if the external ambient temperature is below 0°C, it cannot directly introduce external air to circulate and cool down, so the refrigeration unit needs to run all year round. Conventional refrigeration units are designed according to the condition that the ambient temperature is much higher than the chilled water temperature. In the lower ambient temperature, there are many problems in the reliability and stability of the system operation. At the same time, due to the small temperature difference between indoor and outdoor, the energy consumption of turning on the refrigeration unit is high, and the economic cost is also high.

发明专利《分体式制冷与热管换热循环耦合装置及循环方法》(申请号200910029131.1)(公开日2009年6月17日)提出了一种新的热交换系统,将制冷系统的蒸发器作为热管的蒸发段,将冷凝器作为热管的冷凝段实现了在同一套装置上夏季按照蒸汽压缩式制冷模式运行,过渡季节按照热管换热模式运行。其不足之处在于其只能和蒸汽压缩式制冷循环耦合使用,而常规的蒸汽压缩制冷系统的冷凝回路和换热流动设计是依据具有压缩机驱动的循环予以设计,在旁路压缩机后,原有的设计参数和运行工况匹配会受到一定程度影响。Invention patent "Separate Refrigeration and Heat Pipe Heat Exchange Cycle Coupling Device and Circulation Method" (Application No. 200910029131.1) (public date June 17, 2009) proposes a new heat exchange system, using the evaporator of the refrigeration system as a heat pipe In the evaporating section, the condenser is used as the condensing section of the heat pipe to realize the operation of the same device in the vapor compression refrigeration mode in summer, and in the heat pipe heat exchange mode in transitional seasons. Its shortcoming is that it can only be used in conjunction with the vapor compression refrigeration cycle, while the condensation circuit and heat exchange flow design of the conventional vapor compression refrigeration system is designed based on a compressor-driven cycle. After the bypass compressor, The matching of original design parameters and operating conditions will be affected to a certain extent.

发明内容 Contents of the invention

本发明目的是改进上述现有技术,也可在部分吸收式制冷循环中同样实现热管换热模式的耦合。The purpose of the present invention is to improve the above-mentioned prior art, and also realize the coupling of the heat exchange mode of the heat pipe in the partial absorption refrigeration cycle.

为了达到上述目的,本发明提供了一种具有与蒸发器耦合的分离型热管回路的制冷循环系统,包含蒸发器,其特点是,In order to achieve the above object, the present invention provides a refrigeration cycle system with a separate heat pipe circuit coupled with the evaporator, including the evaporator, which is characterized in that,

蒸发器1两端管路分别设有制冷系统气路阀3和制冷系统液路阀4;The pipelines at both ends of the evaporator 1 are respectively provided with a refrigeration system gas circuit valve 3 and a refrigeration system liquid circuit valve 4;

所述的制冷系统气路阀3与制冷系统液路阀4之间,与蒸发器1并联有热管管路2。A heat pipe 2 is connected in parallel with the evaporator 1 between the refrigeration system air valve 3 and the refrigeration system liquid valve 4 .

如前所述的制冷循环系统,其特点是,所述的热管管路2包括,分离型热管23,热管回路气路阀21,以及热管回路液路阀22;所述的蒸发器1,热管回路气路阀21,热管回路液路阀22,以及分离型热管23共同构成热管回路。As mentioned above, the refrigeration cycle system is characterized in that the heat pipe line 2 includes a separate heat pipe 23, a heat pipe loop air valve 21, and a heat pipe loop liquid valve 22; the evaporator 1, heat pipe The circuit air valve 21, the heat pipe circuit liquid valve 22, and the separated heat pipe 23 together constitute the heat pipe circuit.

如前所述的制冷循环系统,其特点是,所述的分离型热管23位于热管回路气路阀21和热管回路液路阀22之间。As mentioned above, the refrigerating cycle system is characterized in that the separated heat pipe 23 is located between the heat pipe loop air valve 21 and the heat pipe loop liquid valve 22 .

如前所述的制冷循环系统,其特点是,所述的制冷系统气路阀3和制冷系统液路阀4同时关闭或同时开启。As mentioned above, the refrigerating cycle system is characterized in that the refrigerating system gas circuit valve 3 and the refrigerating system liquid circuit valve 4 are closed or opened at the same time.

如前所述的制冷循环系统,其特点是,所述的热管回路气路阀21和热管回路液路阀22同时关闭或同时开启。As mentioned above, the refrigerating cycle system is characterized in that the air valve 21 of the heat pipe circuit and the liquid valve 22 of the heat pipe circuit are closed or opened at the same time.

如前所述的制冷循环系统,其特点是,所述的制冷系统气路阀3和制冷系统液路阀4,以及热管回路气路阀21和热管回路液路阀22可以同时开启。As mentioned above, the refrigerating cycle system is characterized in that the refrigerating system air valve 3 and the refrigerating system liquid valve 4, as well as the heat pipe circuit air valve 21 and the heat pipe circuit liquid valve 22 can be opened simultaneously.

本发明可以根据无外界动力的热管循环特点,调整热管循环的冷凝器内流动方式和换热需求,充分满足进行制冷系统的冬季冷却需求。另外,分离型热管换热器的冷凝器,也可以作为常规压缩制冷系统冷凝器的一部分,在部分负荷区域,使原有压缩制冷系统的冷凝器和分离型热管换热器的冷凝器共同工作,达到拓展工作区域和提高运行效率的效果。本发明有效的降低了能耗,降低了经济成本;并且可以同时应用于蒸汽压缩式和吸收式制冷系统,值得推广普及。According to the characteristics of the heat pipe cycle without external power, the invention can adjust the flow mode and heat exchange demand in the condenser of the heat pipe cycle, and fully meet the winter cooling demand of the refrigeration system. In addition, the condenser of the separated heat pipe heat exchanger can also be used as a part of the condenser of the conventional compression refrigeration system. In the partial load area, the condenser of the original compression refrigeration system and the condenser of the separated heat pipe heat exchanger can work together. , to achieve the effect of expanding the working area and improving operating efficiency. The invention effectively reduces energy consumption and economic cost; and can be applied to vapor compression and absorption refrigeration systems at the same time, and is worthy of popularization.

附图说明 Description of drawings

图1是本发明示意图;Fig. 1 is a schematic diagram of the present invention;

图2是本发明应用于蒸汽压缩式制冷系统的一典型实施例的示意图;Fig. 2 is a schematic diagram of a typical embodiment of the present invention applied to a vapor compression refrigeration system;

图3是本发明应用于吸收式制冷系统的另一典型实施例的示意图。Fig. 3 is a schematic diagram of another typical embodiment of the present invention applied to an absorption refrigeration system.

具体实施方式 Detailed ways

以下结合附图详细说明本发明的具体实施方式。Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

制冷循环系统可以分为蒸汽压缩式制冷循环和吸收式制冷循环。现有技术当中,无论是蒸汽压缩式制冷循环,还是吸收式制冷循环,都设置有蒸发器,其具体功能也一致,即实现制冷剂液体在蒸发器内与被冷却对象发生热交换,吸收被冷却对象的热量并汽化。本发明所述的热管回路,即基于该蒸发器构建。The refrigeration cycle system can be divided into vapor compression refrigeration cycle and absorption refrigeration cycle. In the prior art, no matter it is a vapor compression refrigeration cycle or an absorption refrigeration cycle, there is an evaporator, and its specific functions are also the same, that is, to realize the heat exchange between the refrigerant liquid and the object to be cooled in the evaporator, and absorb the evaporator. Cools the heat of the object and vaporizes it. The heat pipe circuit of the present invention is constructed based on the evaporator.

如图1所示,蒸发器1连通制冷剂管路。其接口11所外接制冷剂管路当中制冷剂为气态,而接口12所外接制冷剂管路当中制冷剂为液态。制冷剂由接口12进入蒸发器1,汽化之后由接口11流出。As shown in FIG. 1 , the evaporator 1 is connected to a refrigerant pipeline. The refrigerant in the refrigerant pipeline externally connected to the interface 11 is gaseous, while the refrigerant in the refrigerant pipeline externally connected to the interface 12 is liquid. The refrigerant enters the evaporator 1 through the interface 12 and flows out through the interface 11 after being vaporized.

如图1所示,接口11外接制冷系统气路阀3和热管回路气路阀21。接口12外接制冷系统液路阀4和热管回路液路阀22。蒸发器1中的制冷剂管路通过制冷系统气路阀3和制冷系统液路阀4连入现有技术中的制冷循环管路。该制冷循环可以是蒸汽压缩式,也可以是吸收式。As shown in FIG. 1 , the interface 11 is externally connected to the air circuit valve 3 of the refrigeration system and the air circuit valve 21 of the heat pipe circuit. The interface 12 is externally connected to the cooling system liquid valve 4 and the heat pipe loop liquid valve 22 . The refrigerant pipeline in the evaporator 1 is connected to the refrigeration cycle pipeline in the prior art through the refrigeration system gas circuit valve 3 and the refrigeration system liquid circuit valve 4 . The refrigeration cycle can be either vapor compression or absorption.

如图1所示,蒸发器1的接口11和接口12之间,除了通过制冷系统气路阀3和制冷系统液路阀4连接制冷循环管路之外,还并联有由热管回路气路阀21,热管回路液路阀22,以及分离型热管23组成的热管管路2。该热管管路2与蒸发器1共同构成热管回路。As shown in Figure 1, between the interface 11 and the interface 12 of the evaporator 1, in addition to connecting the refrigeration cycle pipeline through the refrigeration system air valve 3 and the refrigeration system liquid valve 4, there is also a heat pipe loop air valve connected in parallel. 21 , the heat pipe circuit 2 composed of the heat pipe loop liquid valve 22 and the separated heat pipe 23 . The heat pipe line 2 together with the evaporator 1 constitutes a heat pipe circuit.

图2和图3为本发明分别应用于蒸汽压缩式制冷系统和吸收式制冷系统的两典型实施例示意图。Fig. 2 and Fig. 3 are schematic diagrams of two typical embodiments of the present invention applied to a vapor compression refrigeration system and an absorption refrigeration system respectively.

如图2和图3所示,当封闭环境与室外大气环境温差较小时,例如小于10℃,热管回路气路阀21和热管回路液路阀22均关闭,同时,制冷系统气路阀3和制冷系统液路阀4均打开,蒸发器1接入常规制冷循环中,并向用户提供冷量。该制冷循环可以是蒸汽压缩式,也可以是吸收式。As shown in Figures 2 and 3, when the temperature difference between the closed environment and the outdoor atmospheric environment is small, for example, less than 10°C, both the heat pipe circuit air valve 21 and the heat pipe circuit liquid valve 22 are closed, and at the same time, the refrigeration system air valve 3 and The liquid circuit valves 4 of the refrigeration system are all opened, and the evaporator 1 is connected to the conventional refrigeration cycle and provides cooling capacity to the user. The refrigeration cycle can be either vapor compression or absorption.

如图2和图3所示,当封闭环境与室外大气环境温差较大时,例如大于10℃,热管回路气路阀21和热管回路液路阀22均打开,同时,制冷系统气路阀3和制冷系统液路阀4关闭,蒸发器1与分离型热管23形成一个闭合回路,制冷剂在蒸发器1中蒸发吸收热量,在分离型热管23中冷凝放出热量,蒸发器1向用户提供冷量。As shown in Figure 2 and Figure 3, when the temperature difference between the closed environment and the outdoor atmospheric environment is large, for example greater than 10°C, both the air valve 21 of the heat pipe circuit and the liquid valve 22 of the heat pipe circuit are opened, and at the same time, the air valve 3 of the refrigeration system and the cooling system liquid valve 4 is closed, the evaporator 1 and the separated heat pipe 23 form a closed circuit, the refrigerant evaporates in the evaporator 1 and absorbs heat, and condenses in the separated heat pipe 23 to release heat, and the evaporator 1 provides cooling to the user. quantity.

当热管回路关闭时,蒸发器1以常规的蒸汽压缩或吸收等循环方式运行;当常规制冷循环回路关闭时,热管回路打开,这时原来制冷系统的蒸发器1起到热管的蒸发器的作用,分离型热管23主要起到冷凝器作用。从蒸发器1出来的蒸汽在分离型热管23中流动、冷凝,然后再回到蒸发器1。When the heat pipe circuit is closed, the evaporator 1 operates in a conventional cycle such as vapor compression or absorption; when the conventional refrigeration cycle circuit is closed, the heat pipe circuit is opened, and the evaporator 1 of the original refrigeration system acts as the evaporator of the heat pipe , the separated heat pipe 23 mainly plays the role of a condenser. The steam coming out of the evaporator 1 flows in the separated heat pipe 23 , condenses, and then returns to the evaporator 1 .

在本发明的另一典型实施例中,如图2所示的压缩式制冷系统,可以将分离热管23作为常规压缩制冷系统冷凝器的一部分来运行。在部分负荷区域,使原有压缩制冷系统的冷凝器和分离型热管23共同工作,达到拓展工作区域和提高运行效率的效果。如图2所示,此时制冷系统气路阀3和制冷系统液路阀4,以及热管回路气路阀21和热管回路液路阀22同时开启。压缩式制冷系统的冷凝器与分离型热管23并联运行。In another exemplary embodiment of the present invention, a compression refrigeration system as shown in FIG. 2, the split heat pipe 23 may be operated as a part of a conventional compression refrigeration system condenser. In the partial load region, the condenser of the original compression refrigeration system and the separated heat pipe 23 are made to work together to achieve the effect of expanding the working area and improving the operating efficiency. As shown in FIG. 2 , at this time, the air valve 3 of the refrigeration system and the liquid valve 4 of the refrigeration system, as well as the air valve 21 of the heat pipe circuit and the liquid valve 22 of the heat pipe circuit are simultaneously opened. The condenser of the compression refrigeration system runs in parallel with the separated heat pipe 23 .

对于常年提供制冷需求的系统来说,在封闭环境与室外大气环境温差较大时,利用分离型热管回路直接向环境放出热量已经可以提供足够的冷量。这种情况下,不仅制冷系统的运行简单可靠,而且由于主要能源消耗为分离型热管与环境热交换所需要的风机或水泵,所以能够大大降低运行能耗,降低运行成本。在某些压缩式制冷系统当中,热管管路2与压缩制冷系统的冷凝器共同工作,达到了拓展工作区域和提高运行效率的效果。并且,由于本发明同时适用于蒸汽压缩式制冷系统和吸收式制冷系统,具有很高的推广价值。For systems that provide cooling needs all year round, when the temperature difference between the closed environment and the outdoor atmosphere is large, the use of separate heat pipe loops to directly release heat to the environment can already provide sufficient cooling capacity. In this case, not only the operation of the refrigeration system is simple and reliable, but also because the main energy consumption is the fan or water pump required for heat exchange between the separated heat pipe and the environment, it can greatly reduce the energy consumption and cost of operation. In some compression refrigeration systems, the heat pipe line 2 works together with the condenser of the compression refrigeration system to achieve the effect of expanding the working area and improving the operating efficiency. Moreover, since the invention is applicable to vapor compression refrigeration systems and absorption refrigeration systems at the same time, it has high popularization value.

Claims (1)

1. there is the cooling cycle system in the separate heat pipe loop be coupled with evaporimeter, comprise evaporimeter (1), it is characterized in that,
Evaporimeter (1) two ends pipeline is respectively equipped with refrigeration system gas circuit valve (3) and refrigeration system fluid path valve (4);
Between described refrigeration system gas circuit valve (3) and refrigeration system fluid path valve (4), be parallel with heat pipe pipeline (2) with evaporimeter (1);
Described heat pipe pipeline (2) comprises, separate heat pipe (23), heat pipe circuit gas circuit valve (21), and heat pipe circuit fluid path valve (22); Described evaporimeter (1), heat pipe circuit gas circuit valve (21), heat pipe circuit fluid path valve (22), and separate heat pipe (23) forms heat pipe circuit jointly; When enclosed environment and outside atmosphere circumstance of temperature difference are less than 10 DEG C, described heat pipe circuit gas circuit valve (21) and described heat pipe circuit fluid path valve (22) are all closed, meanwhile, described refrigeration system gas circuit valve (3) and described refrigeration system fluid path valve (4) are all opened; When described enclosed environment and outside atmosphere circumstance of temperature difference are greater than 10 DEG C, described heat pipe circuit gas circuit valve (21) and described heat pipe circuit fluid path valve (22) are all opened, meanwhile, described refrigeration system gas circuit valve (3) and described refrigeration system fluid path valve (4) are all closed; Described enclosed environment refers to thermic load enclosure space;
Described separate heat pipe (23) is positioned between described heat pipe circuit gas circuit valve (21) and described heat pipe circuit fluid path valve (22);
Described refrigeration system gas circuit valve (3) and refrigeration system fluid path valve (4), and heat pipe circuit gas circuit valve (21) and heat pipe circuit fluid path valve (22) can be opened simultaneously.
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