Stirring device installed in heat pump system pipeline and used for promoting fluid liquefaction
阅读说明:本技术 一种安装于热泵系统管道中的促进流体液化的搅拌装置 (Stirring device installed in heat pump system pipeline and used for promoting fluid liquefaction ) 是由 小谷一 徐志元 金孝胜 于 2017-05-29 设计创作,主要内容包括:一种安装于热泵系统管道中的静态液化促进装置,包括一种流体引导单元,其外部是圆柱形壳体,内部包括大小两种圆盘,组装时,使圆柱形壳体的轴心和圆盘的圆心对齐,并使直径相同的圆盘彼此相邻。该装置安装在管道中,可以在热泵循环时搅拌含有制冷剂和冷冻机油的流体。每个搅拌室均设有大直径和小直径的两个圆盘。多个搅拌室各自被安装在不同位置,两两之间互相连通,在此基础上与更多搅拌室连通。当热泵系统运行时,含有制冷剂和冷冻机油的流体以0.2至10 MPa的压力通过静态液化促进装置,并通过热泵系统中反复循环。通过这种方式,该装置能够搅拌含有制冷剂和冷冻机油的流体,使其均匀混合。(A static liquefaction promoting device installed in a heat pump system pipe includes a fluid guide unit having an outer cylindrical casing and an inner large and small disks, and assembled such that the axis of the cylindrical casing and the center of the disk are aligned and the disks having the same diameter are adjacent to each other. The device is installed in a pipe and can stir fluid containing refrigerant and refrigerating machine oil during a heat pump cycle. Each mixing chamber is provided with two discs of large and small diameter. The stirring chambers are respectively arranged at different positions, and are communicated with each other in pairs, so that the stirring chambers are communicated with more stirring chambers. When the heat pump system is operated, a fluid containing a refrigerant and a refrigerating machine oil is passed through the static liquefaction promoting means at a pressure of 0.2 to 10MPa, and is repeatedly circulated through the heat pump system. In this way, the device can stir the fluid containing the refrigerant and the refrigerating machine oil to be uniformly mixed.)
1. A static liquefaction promoting device for installation in a heat pump system conduit for agitating and uniformly mixing a fluid containing a refrigerant and a refrigerating machine oil circulating therein, comprising:
a cylindrical housing having an inlet and an outlet at both axial ends thereof;
one or more channel units, each channel unit consisting of a pair of large-diameter disks on the outside thereof and a pair of small-diameter disks on the inside thereof, mounted in axial alignment within said cylindrical housing,
the diameter of the large-diameter disc is consistent with the inner diameter of the cylindrical shell, the center of the large-diameter disc is provided with a fluid hole, the inner surface of the large-diameter disc is attached with a honeycomb plate with a polygonal unit structure,
the outer side of the small-diameter disc is attached with a honeycomb plate with a polygonal unit structure,
the honeycomb plates of the large-diameter disks and the small-diameter disks are arranged to face each other so that each polygonal unit communicates with more than one opposing polygonal unit, and the two large-diameter disks closest to the inlet and outlet of the cylindrical casing have fluid holes communicating with the inlet and outlet of the casing;
wherein a fluid containing a refrigerant and a refrigerating machine oil is circulated in the heat pump system at a pressure of 0.2 to 10 MPa.
2. The static liquefaction promoting device of claim 1, wherein the inlet and outlet of the cylindrical shell are also switched over when the heat pump system is switched over between cooling and heating operations.
3. The static liquefaction promoting device of claim 2, further comprising a heat sink surrounding the cylindrical housing, the heat sink being in communication with the inlet or outlet of the cylindrical housing and allowing the fluid to pass therethrough, the fluid passing through the heat sink and contacting the outer wall of the cylindrical housing to conduct heat therefrom.
4. A rotary liquefaction promoting device disposed in a heat pump system conduit for agitating and uniformly mixing a fluid containing a refrigerant and a refrigerating machine oil circulating therein, comprising:
the stirring tank is used for stirring the fluid, and the end part of the stirring tank is provided with a fluid inlet and a fluid outlet;
a rotary stirring unit fixed on a shaft and connected to a rotary driving source through the shaft, the rotary driving source being disposed on the stirring tank,
the upper part of the rotary stirring unit is formed by a disc, and the inner surface of the disc is a honeycomb plate with polygonal units; the lower part of the device is composed of a disc, the center of the disc is provided with a fluid hole, the inner surface is a honeycomb plate with polygonal units,
the honeycomb plates of the upper and lower disks are arranged to face each other so that each polygonal unit communicates with more than one opposing polygonal unit;
wherein a fluid containing a refrigerant and a refrigerating machine oil is circulated in a heat pump system having a pressure of 0.2 to 10 MPa.
5. The rotary liquefaction promoting device of claim 4, wherein the inlet and outlet of the cylindrical housing are also switched over when the heat pump system is switched over between cooling and heating operations.
6. The rotary liquefaction promoting device of claim 5, further comprising a heat sink surrounding the agitator tank, the heat sink being in communication with the inlet or outlet of the agitator tank and permitting the fluid to pass therethrough, the fluid passing through the heat sink and contacting the outer wall of the agitator tank to remove heat therefrom.
7. The static liquefaction promoting device of claim 1, wherein the cylindrical housing further includes a spring member having a diameter smaller than an inner diameter of the cylindrical housing and being in a vibratable state.
8. The static liquefaction promoting device of claim 7, further comprising a heat sink surrounding the cylindrical housing, the heat sink being in communication with the inlet or outlet of the cylindrical housing and allowing the fluid to pass therethrough, the fluid passing through the heat sink and contacting the outer wall of the cylindrical housing to conduct heat therefrom.
9. The static liquefaction promoting device of claim 3 or 8, wherein the heat sink further includes a spring member having a diameter smaller than an inner diameter of the heat sink and being in a vibratable state.
10. The rotary liquefaction promoting device of claim 4, wherein the agitation tank further comprises a spring member having a diameter smaller than an inner diameter of the agitation tank and being in a vibratable state.
11. The rotary liquefaction promoting device of claim 10, further comprising a heat sink surrounding the agitator tank, the heat sink being in communication with the inlet or outlet of the agitator tank and permitting the fluid to pass therethrough, the fluid passing through the heat sink and contacting the outer wall of the agitator tank to remove heat therefrom.
12. The rotary liquefaction promoting device of claim 6 or 11, wherein the agitation tank further comprises a spring member having a diameter smaller than an inner diameter of the agitation tank and being in a vibratable state.
Technical Field
The present invention relates to a liquefaction promoting device which is installed in a heat pump system pipeline and promotes fluid liquefaction by stirring fluid, and more particularly, to a device which is provided with a fluid mixer or a rotatable disk on an axis and compresses fluid through a slit, an orifice, and the like.
Background
Heat pump systems, such as refrigeration cycle systems or air conditioning systems, which are made using a heat pump cycle, often require long piping and are required to satisfy various installation conditions. The heat pump system mainly comprises a compressor, a condenser, an expander and an evaporator. These devices are connected by pipes in which the refrigerant circulates. The refrigerant is mixed with a refrigerating machine oil. The compressor includes a refrigerator oil sump. The refrigerating machine oil is mixed with or dissolved in the refrigerant and discharged from the compressor, forming a cycle in the heat pump system.
The refrigerants conventionally used are made of specific CFCs (chlorofluorocarbons), which are compatible with refrigerator oils. But have now been replaced by CFC substitutes due to ozone depletion problems. CFC substitutes are less compatible with refrigerator oils than specific CFCs. This leads to a problem: the refrigerating machine oil discharged from the compressor is separated from the refrigerant and remains in the condenser or a portion of the piping, resulting in a shortage of the refrigerating machine oil in the compressor.
The refrigerator oil has other problems as follows. The refrigerant having low compatibility with the refrigerator oil has poor fluidity. The refrigerating machine oil staying in the condenser or the piping blocks the flow of the refrigerant and hinders the heat exchange in the condenser and the evaporator. The heat exchange efficiency of the heat pump is thus reduced. In order to improve the compatibility between the refrigerant and the refrigerating machine oil, various additives such as a chemical synthetic oil and the like have been tried, but no satisfactory solution has been obtained. And the other scheme is to mix the refrigerating machine oil and the refrigerant uniformly by stirring.
Patent document 1 discloses an agitation device that can agitate and mix refrigerating machine oil and refrigerant in a compressor to prevent them from being separated.
The refrigerant has another problem. After undergoing the liquefaction process in the condenser, the gaseous refrigerant remains and circulates together with the liquefied refrigerant. As the gaseous refrigerant passes through the expander and reaches the evaporator, the refrigerant becomes a two-phase gas-liquid fluid at the evaporator inlet. Since the gaseous refrigerant does not contribute to the heat exchange in the evaporator, the heat exchange efficiency may be reduced.
Patent documents 2 and 3 disclose a gas-liquid separator provided on the downstream side of the expander. The gas-liquid separator may separate a gas-liquid two-phase refrigerant, send only the liquid refrigerant to the evaporator and return the gaseous refrigerant to the compressor.
As another solution, patent document 4 discloses a bubble removing device that can remove bubbles in a refrigerant during liquefaction of a compressor, thereby completely liquefying the refrigerant. The bubble removing device includes a cylindrical member installed at a downstream side of the compressor (or the outdoor unit). The cylindrical member may generate a spiral flow of refrigerant, agitate the refrigerant and remove gas bubbles therefrom.
Drawings
Fig. 1 is an exemplary diagram of an application of a static liquefaction promoting device in a heat pump system. Fig. 1(a) shows the flow of fluid during cooling. Fig. 1(b) shows the flow of fluid during heating.
Fig. 2 is a structural view of a honeycomb panel having polygonal cells. FIG. 2(a) is a plan view, and FIG. 2(b) is an A-A sectional view.
Fig. 3 is a view of various forms of a honeycomb panel having polygonal cells. Fig. 3(a) shows a honeycomb panel having octagonal cells. Fig. 3(b) shows a honeycomb panel having hexagonal cells. Fig. 3(c) shows a honeycomb panel having triangular cells. Fig. 3(d) shows a honeycomb panel having square cells.
Fig. 4 is a partially enlarged view of a passage unit composed of a large-diameter disk, a small-diameter disk and a honeycomb plate.
Fig. 5 is a perspective view of a small diameter disc.
Fig. 6 is an exemplary view of a static liquefaction promoting apparatus further equipped with a heat sink according to the present invention. Fig. 6(a) shows the flow of fluid during cooling. Fig. 6(b) shows the flow of fluid during heating.
Fig. 7 is a diagram showing an example of a rotary liquefaction promoting apparatus in the present invention. Fig. 7(a) shows the flow of fluid during cooling. Fig. 7(b) shows the flow of fluid during heating.
Fig. 8 shows a block diagram of a rotary stirring unit consisting of two discs.
Fig. 9 shows a detailed configuration of the rotary stirring unit and a sectional view of the flow of the fluid therein.
Fig. 10 is a view of various forms of a honeycomb panel having polygonal cells. Fig. 10(a) shows a honeycomb panel having triangular cells. Fig. 10(b) shows a honeycomb panel having square cells. Fig. 10(c) shows a honeycomb panel having octagonal cells. Fig. 10(d) shows a honeycomb panel having hexagonal cells.
Fig. 11 is an exemplary view of a rotary liquefaction promoting device further equipped with a heat sink according to the present invention. Fig. 11(a) shows the flow of fluid during cooling. Fig. 11(b) shows the flow of fluid during heating.
Fig. 12 shows a detailed configuration of the rotary stirring unit and a sectional view of the flow of the fluid therein.
Fig. 13 shows a cross-sectional view of a static liquefaction promoting device using a spring member instead of a channel unit.
Fig. 14 shows a cross-sectional view of a static liquefaction promoting device that includes a spring member in addition to a channel unit.
Fig. 15 shows a sectional view of a static liquefaction promoting device including a heat dissipation groove in addition to a spring member and a passage unit.
Fig. 16 shows a sectional view of a static liquefaction promoting apparatus including a heat radiation groove provided with a spring member and a passage unit.
Fig. 17 shows a cross-sectional view of a rotary liquefaction promoting device including an agitated tank equipped with a spring member.
Fig. 18 shows a cross-sectional view of a rotary liquefaction promoting device including an agitation tank equipped with a spring member and a heat dissipation tank.
Fig. 19 shows a cross-sectional view of a rotary liquefaction promoting device including an agitation tank and a heat dissipation tank equipped with a spring member.
Fig. 20 shows the experimental results of reducing the energy consumption in the existing heat pump system to which the liquefaction promoting apparatus according to the sixth embodiment is adapted.
Detailed Description
In the following, detailed embodiments of the device according to the invention are described by means of the figures with reference numbers. In the drawings, like reference numerals designate like components having similar basic constitution and operation.
< example 1>
Configuration of
A first embodiment of the invention is shown in figures 1 to 5. Fig. 1 shows an application example of the static liquefaction promoting apparatus 1 in a heat pump system. The heat pump system may be an air conditioner, a freezer, a refrigerator, a boiler, a freezer, a chiller, etc. The heat pump system is not limited to operation by electricity, but may be operated by other types of power sources, such as gas turbines. The static liquefaction promoting device may be installed at the time of manufacturing the heat pump system, or may be installed in an existing heat pump system.
The heat pump system takes heat from a low temperature object and provides heat to a high temperature object to cool the low temperature object and/or heat the high temperature object. An air conditioner can be switched between a cooling process and a heating process, and is also a heat pump system.
The term "fluid" as used herein refers to a substance that circulates in a heat pump cycle. The fluid contains a refrigerant and a refrigerator oil. It can be in liquid, gas or gas-liquid mixed state in the heat pump cycle.
Fig. 1 shows a cross-sectional view of an air conditioning heat pump cycle. Fig. 1(a) shows the flow of fluid during cooling. Fig. 1(b) shows the flow of fluid during heating.
The heat pump cycle of the cooling process includes a
In the heat pump cycle cooling shown in fig. 1(a), the
However, when the refrigerant is liquefied in the condenser (outdoor unit) 84, part of the refrigerator oil cannot be mixed with or dissolved in the refrigerant, or forms an oil phase to be melted, and encloses the liquefied refrigerant. Even after passing through the condenser (outdoor unit) 84, there is the refrigerating machine oil in the form of high-pressure gas. Thus, the liquefied fluid discharged from the condenser (outdoor unit) 84 may contain unmixed refrigerator oil, refrigerant encapsulated in oil-phase refrigerator oil, and/or gaseous refrigerant.
As shown in fig. 1(a), in the cooling process, the liquefaction promoting apparatus 1 is disposed between a condenser (outdoor unit) 84 and an
The
In the heat pump cycle heating process shown in fig. 1(b), the fluid flows in the opposite direction. A switching valve (not shown) for switching the flow direction of the fluid is provided in the heat pump system. When in the heating process, the
Similar to the cooling process described above in fig. 1(a), the liquefied fluid discharged from the condenser (indoor unit) 82 may contain unmixed refrigerator oil, refrigerant encapsulated in oil-phase refrigerator oil, and/or gaseous refrigerant. During the heating process, the liquefied fluid discharged from the condenser (indoor unit) 82 flows into the
As shown in fig. 1(b), the heating process of the liquefaction promoting apparatus 1 is performed between the
During the heating process, the evaporator (outdoor unit) 84 heats and vaporizes the incoming low-temperature and low-pressure liquid fluid by absorbing heat from the outside, thereby achieving heat exchange. The vaporized fluid flows into the
As shown in fig. 1(a) and 1(b), a liquefaction promoting apparatus 1 according to the present invention is installed in a pipe of a heat pump system. Since such a pipe is composed of a plurality of pipes, it is possible to easily install the liquefaction promoting device 1 to the heat pump system by replacing one of the pipes. The liquefaction promoting device 1 may also be installed in the outdoor portion of the pipeline.
The above is an example of installing the liquefaction promoting apparatus 1 of the present invention in a basic type heat pump system. The liquefaction promoting apparatus 1 is also applicable to different types of heat pump systems equipped with various additional components. For example, the liquefaction promoting apparatus 1 may be mounted to a heat pump system equipped with a gas-liquid separator, and may also be mounted to a heat pump system having an ejector and a gas-liquid separator in place of an expander.
The liquefaction promoting apparatus 1 shown in fig. 1(a) is of the "static type" in which a non-rotatable disc is provided and fixed to a
The
In the
Figure 2 shows a honeycomb panel structure of large diameter disks and small diameter disks. FIG. 2(a) is a plan view, and FIG. 2(b) is an A-A sectional view. As shown, the honeycomb panel has hexagonal cells arranged closely without gaps between the cells. After the adjacent honeycomb plates are fixed, the hexagonal units of the two honeycomb plates do not overlap with each other. Thus, the path of the fluid becomes complicated, and efficient stirring is obtained.
Fig. 3 shows various forms of a honeycomb panel having polygonal cells. Fig. 3(a) shows a honeycomb panel having octagonal cells. Fig. 3(b) shows a honeycomb panel having hexagonal cells. Fig. 3(c) shows a honeycomb panel having triangular cells. Fig. 3(d) shows a honeycomb panel having square cells. The honeycomb panel described herein is not limited to a panel of hexagonal cells, but includes any kind of regular polygonal cells that can be closely arranged without gaps. Two adjacent honeycomb plates of the large-diameter disk and the small-diameter disk are arranged to face each other such that each polygonal cell communicates with more than one opposing polygonal cell. Thus, the path of the fluid becomes complicated, thereby allowing the fluid to be efficiently stirred.
Fig. 4 is a partially enlarged view of the passage unit 23 composed of the large-diameter disks 35, 36, the small-diameter disks 45, 46, and the honeycomb plate. As shown in the drawing, fluid holes communicating both sides are formed near the outer peripheral sides of the small diameter disks 45 and 46.
Fig. 5 is a perspective view of the small-diameter disk 41. The small-diameter disks 41 are combined with honeycomb panels having a hexagonal cell structure.
< operation >
The fluid containing the refrigerant and the refrigerating machine oil is passed through the liquefaction promoting apparatus 1 at a pressure of 0.2 to 10MPa so as to be efficiently stirred and uniformly mixed. This helps to improve the heat exchange efficiency of CFC substitutes.
Although fig. 1 shows only the liquefaction promoting device 1 disposed horizontally, the device may be disposed vertically.
< example 2>
< use of Heat sink >
FIG. 6 is a view showing an example of use of the static liquefaction promoting apparatus 1 of the present invention further provided with a heat sink. Fig. 6(a) shows the flow of fluid during cooling. Fig. 6(b) shows the flow of the fluid during heating.
The
In the heating process shown in fig. 6(b), heat is taken away from the
The
< example 3>
< rotating apparatus >
Fig. 7 shows an example of use of the rotary liquefaction promoting apparatus 101 in the present invention. Fig. 7(a) shows the flow of fluid during cooling. Fig. 7(b) shows the flow of the fluid during heating.
The rotary liquefaction promoting apparatus 101 is provided with an agitation tank 110 and a rotary agitation unit 130, and the rotary agitation unit 130 is fixed to a
Fig. 8 shows the structure of the rotary stirring unit 130, which includes two
The sectional view of fig. 9 shows the detailed configuration of the rotary stirring unit 130 and the flow of fluid therein. As shown in the drawing, the fluid is introduced into the rotary stirring unit 130 mainly through the lower fluid holes thereof, and flows to the outer circumferential side of the disk through the honeycomb plate. In this way, the fluid is efficiently stirred and uniformly mixed. The uniformly mixed fluid is discharged from the agitation tank 110 through an outlet.
Fig. 10 shows diagrams of various forms of honeycomb panels having polygonal cells. Fig. 10(a) shows a honeycomb panel having triangular cells. Fig. 10(b) shows a honeycomb panel having square cells. Fig. 10(c) shows a honeycomb panel having octagonal cells. Fig. 10(d) shows a honeycomb panel having hexagonal cells.
The rotary liquefaction promoting device 101 may have more than one rotary stirring unit, as described below with reference to fig. 1 and 2. 11 and 12.
< example 4>
< use of Heat sink for Rotary device >
Fig. 11 shows an example of use of the rotary liquefaction promoting apparatus 101 with a heat sink 190 according to the present invention. Fig. 11(a) shows the flow of fluid during cooling. Fig. 11(b) shows the flow of the fluid during heating. The arrangement and operation of the device is similar to that shown in figure 6.
Fig. 12 is a sectional view showing a detailed structure of the
< example 5>
< use of spring Member >
Fig. 13 shows a cross-sectional view of a static
The
< operation >
When the fluid in which the refrigerant and the refrigerating machine oil are mixed passes through the liquefaction promoting means 201 at a pressure of 0.2 to 10MPa, the
< example 6>
< use of spring Member in static device >
Fig. 14 shows a cross-sectional view of a static
In addition, similar to the
< operation >
The
< example 7>
< use of heat sink and spring member in static device >
Fig. 15 shows a cross-sectional view of a static
< example 8>
< use of heat sink and spring member in static device >
Fig. 16 shows a sectional view of the static
< example 9>
< use of spring Member in Rotary device >
Fig. 17 shows a cross-sectional view of a rotary liquefaction promoting device 601 including an agitated tank with a spring member. As shown, the liquefaction promoting apparatus 601 includes an agitation tank 610 provided with a spring member 650, and the spring member 650 may freely vibrate. The
< example 10>
< use of spring Member and Heat sink in agitation tank >
Fig. 18 shows a cross-sectional view of a rotary liquefaction promoting device 701 including an agitated tank having a spring member and a heat sink 790. As shown, the liquefaction promoting device 701 has a similar configuration to that shown in fig. 17, but differs in that a heat sink 790 is further included. The
< example 11>
Fig. 19 shows a sectional view of the rotary liquefaction promoting apparatus including the
< energy saving Performance >
Fig. 20 is a set of experimental results showing the performance in terms of energy saving when the
As shown in fig. 20, the
The liquefaction promoting apparatus of the present invention is applicable to various heat pumps including a heat pump using electric energy and gas energy as long as the heat pump performs heat exchange by a fluid cycle including a refrigerant and a refrigerator oil.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:热交换器、热交换模块以及制冷循环装置