TWI579509B - Energy-saving air conditioning system - Google Patents

Description

Energy-saving air conditioning system

The present invention relates to an air conditioning system, and more particularly to an energy saving air conditioning system.

As modern people's requirements for quality of life are getting higher and higher, air-conditioning systems have become a necessity in daily life. The air conditioning system with high energy efficiency ratio (EER) will be appreciated if the living comfort and energy saving are combined. A conventional method for improving the efficiency of an air conditioning system is a heat exchanger using a special material or structure to improve heat transfer performance. However, copper and aluminum materials currently used in heat exchangers have excellent thermal conductivity, if further used. Precious metals with better heat transfer coefficients will add a lot of cost. Therefore, how to reduce the cost required while improving energy efficiency will be a subject worthy of study.

Accordingly, it is an object of the present invention to provide an energy efficient air conditioning system that is inexpensive.

The energy-saving air conditioning system of the present invention comprises a condenser; a throttle element; An evaporator that causes condensate to be generated during operation; a refrigerant line that communicates with the condenser, the throttling element, and the evaporator, and has a subcooling section that communicates with the outlet end of the condenser and a throttle element; a chassis for carrying the condenser and the evaporator, and capable of receiving condensed water; and a water absorbing fiber member covering the supercooling section of the refrigerant pipe and connecting the chassis for adsorbing condensed water.

In some embodiments, the moisture evapotranspiration rate of the absorbent fibrous member is evaluated by an evapotranspiration method, and the residual water content (RWR) of the absorbent fibrous member is less than or equal to 35% after 40 minutes.

In some embodiments, the material of the absorbent fibrous member comprises nylon fibers, elastic fibers, profiled polyester fibers, or a combination of such materials.

In some embodiments, the absorbent fibrous member also encases the throttling element.

In some embodiments, the absorbent fibrous member comprises a tubular covering section and a plurality of strip-shaped extensions covering the subcooling section of the refrigerant line, the extensions being The cladding section extends over the chassis and is immersed in condensed water.

In some embodiments, the absorbent fibrous member is strip-shaped and can be wrapped around the refrigerant conduit in a manner that can be sewn and wrapped.

The energy-saving air conditioning system of the present invention comprises an indoor unit, including an evaporator, which causes condensed water to be generated during operation, and a water conduit for discharging condensed water; an outdoor unit including a condenser and an outdoor chassis for carrying The condenser has a water tank for receiving condensed water discharged from the water conduit; a flow element; a refrigerant tube a passage connecting the condenser, the throttling element and the evaporator, and having a subcooling section communicating with an outlet end of the condenser and the throttling element; and a water absorbing fiber member covering the refrigerant The subcooling section of the pipeline is connected to the outdoor chassis for adsorbing condensed water.

In some embodiments, the moisture evapotranspiration rate of the absorbent fibrous member is evaluated by an evapotranspiration method, and the residual water content (RWR) of the absorbent fibrous member is less than or equal to 35% after 40 minutes.

In some embodiments, the material of the absorbent fibrous member comprises nylon fibers, elastic fibers, profiled polyester fibers, or a combination of such materials.

In some embodiments, the absorbent fibrous member also encases the throttling element.

In some embodiments, the absorbent fibrous member comprises a tubular covering section and a plurality of strip-shaped extensions covering the subcooling section of the refrigerant line, the extensions being The cladding section extends from the water tank of the outdoor chassis and is immersed in the condensed water.

In some embodiments, the absorbent fibrous member is strip-shaped and can be wrapped around the refrigerant conduit in a manner that can be sewn and wrapped.

The invention has at least the following effects: by adsorbing and evaporating the condensed water by the water absorbing fiber member, and the temperature difference between the condensed water itself and the supercooling section of the refrigerant line, the temperature of the refrigerant in the refrigerant line can be lowered, thereby improving the subcooling degree of the refrigerant. , to achieve the effect of improving the coefficient of performance (COP, Coefficient Of Performance) of the air conditioning system.

10‧‧‧Window type air conditioner

1‧‧‧Compressor

2‧‧‧Condenser

3‧‧‧Condensing fan

4‧‧‧throttle element

5‧‧‧Evaporator

6‧‧‧Evaporation fan

7‧‧‧Refrigerant piping

71‧‧‧Cooling section

8‧‧‧Chassis

9‧‧‧Water-absorbent fiber parts

91‧‧‧Covering section

92‧‧‧Extension

100‧‧‧Separate air conditioner

20‧‧‧ indoor unit

201‧‧‧Water conduit

30‧‧‧Outdoor machine

301‧‧‧Outdoor chassis

301a‧‧‧Water Box

W‧‧‧condensed water

L ₁ ‧‧‧refrigeration cycle

L ₂ ‧‧‧saturated liquid line

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is a schematic diagram illustrating an energy-saving air-conditioning system of the present invention; FIG. 2 is a schematic diagram illustrating the energy-saving air-conditioning system of the present invention. A first embodiment; FIG. 3 is a schematic view showing a state in which a water-absorbent fiber member of the first embodiment is coated on a refrigerant pipe; and FIG. 4 is a schematic view showing the water absorption of the first embodiment. The fiber member is coated on the other side of the refrigerant pipe; FIG. 5 is a diagram illustrating the relationship between the pressure and the enthalpy of the refrigerant in the refrigeration cycle; and FIG. 6 is a schematic view showing a second embodiment of the energy-saving air conditioning system of the present invention. FIG. 7 is a schematic view showing a state in which the water-absorbent fiber member of the second embodiment is coated on the refrigerant pipe; FIG. 8 is a schematic view showing the water-absorbent fiber member of the second embodiment. Another aspect of the refrigerant line;

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 and FIG. 2, a first embodiment of the energy-saving air conditioning system of the present invention is a window type air conditioner 10, which comprises a compressor 1, a condenser 2, a condensation fan 3, a throttle element 4, and an evaporator. 5. An evaporating fan 6, a refrigerant line 7, a chassis 8, and a water absorbing member 9. The compressor 1 is used to compress the refrigerant, the condenser 2 is used to condense the gaseous refrigerant into a liquid refrigerant, the condensing fan 3 is used to generate a gas flow through the condenser 2, and the throttling element 4 is used to depressurize the refrigerant, this embodiment is Expansion valves can also be used with capillary tubes and are not limited to this. When the evaporator 5 is in operation, it causes condensation of water vapor in the ambient air to form condensed water w, and the evaporating fan 6 is used to generate an airflow through the evaporator 5. The refrigerant line 7 is connected between the compressor 1, the condenser 2, the throttle element 4 and the evaporator 5, respectively, and provides a refrigerant circulating between the compressor 1, the condenser 2, the throttle element 4 and the evaporator 5. The pipeline has a subcooling section 71, and the supercooling section 71 communicates with the outlet end of the condenser 2 and the throttle element 4. The chassis 8 is for carrying the compressor 1, the condenser 2 and the evaporator 5, and can receive the condensed water w. The water absorbing fiber member 9 covers the supercooling section 71 of the refrigerant pipe 7 and the throttle element 4 and is connected to the chassis 8, and can be made of a fiber fabric having moisture absorbing and quick drying characteristics for adsorbing condensed water w and rapidly condensing water w. evaporation. Specifically, the water-absorbent fiber member 9 can be made of a fiber material such as nylon fiber, elastic fiber, or profiled cross-secion polyester fiber, for example, 64% nylon fiber, 24% profiled polyester fiber. And the fiber composed of 12% elastic fiber, but not limited to the above fiber material and composition ratio, as long as the characteristics of moisture absorption and quick drying can be achieved. Regarding the quick-drying characteristics of the water-absorbent fiber member 9, the steam evaporation method can be used to evaluate the steam evaporation in the water-absorbent fiber member 9. The scattering rate, for example, in the present embodiment, the residual water content (RWR, Remained Water Ratio) of the water-absorbent fiber member 9 after about 40 minutes is about 12.1%, and the water-absorbent fiber member 9 can be evaluated to have a quick-drying property. Furthermore, the quick-drying characteristic of the water-absorbing air-conditioning system of the present invention requires that the lower the residual moisture rate after 40 minutes, the more the temperature-adjusting performance and energy efficiency of the energy-saving air-conditioning system can be maximized. And the value below 13% is in line with the "excellent" rating, below 35% is "good", and the use of fiber materials with RWR less than 35% can achieve good results.

Referring to Figures 2 to 4, the absorbent fibrous member 9 includes a tubular covering section 91 and a plurality of strips 92 extending from the bottom end of the covering section 91 (shown in Figure 3). The supercooling section 71 and the throttling element 4 of the refrigerant pipeline 7 are coated, and the extension sections 92 extend from the cladding section 91 to the chassis 8 to increase the area of the adsorbed condensed water w, and the cladding section 91 and the extension section 92 The shape and size of the components such as the throttle element 4 and the refrigerant line 7 can be adjusted to enhance the water absorption effect. However, the absorbent fibrous member 9 has another embodiment in which it is strip-shaped and can be sewn and wound in a wound manner to cover the supercooling section 71 of the refrigerant pipe 7 and the throttle member 4, as shown in FIG.

Referring to Figures 1, 2 and 5, the following describes the changes in the properties of the refrigerant in the refrigeration cycle. L _{1 in} Fig. 5 is a refrigerating cycle line of a refrigerant, and L ₂ is a saturated liquid line. The ideal refrigerating cycle is described starting from point 1, and the refrigerant enters the compressor 1 for adiabatic compression to reach point 2, and then Entering the condenser 2 for isobaric cooling to reach point 3, then adiabatic expansion at constant enthalpy reaches point 4, and finally enters evaporator 5 for isostatic evaporation (isobaric evaporation) ) Return to point 1, which is to complete the refrigeration cycle of the refrigerant. However, in the actual system cycle, the liquid refrigerant passing through the evaporator 5 will form liquid compression upon entering the compressor 1 without being completely evaporated, thereby reducing the life of the compressor 1; The liquid refrigerant at the outlet end of the evaporator 5 is controlled to be in an overheated state (ie, point 1) to keep the refrigerant in a completely evaporated state. In the actual compression process from point 1 to point 2, the compression is at constant entropy, which causes an increase in entropy due to the friction of the internal piping of the compressor 1. During the cooling process from point 2 to point 3, the pressure drop in the pipeline causes a pressure drop, so that the pressure of the refrigerant leaving the condenser 2 is slightly lower than the pressure at the time of entry. In the adiabatic expansion process of point 3 to point 4, when the refrigerant leaves the condenser 2, it is a supercooled liquid, that is, the temperature of the refrigerant is lower than the saturation temperature, and after entering the throttling element 4 in the supercooled state, the refrigerant can be reduced. A flash occurs when the voltage is reduced. After the refrigerant passes through the evaporator 5, the external temperature is lowered by the heat of evaporation, and the water in the airflow generated by the evaporating fan 6 is condensed to form the condensed water w, and then flows to the chassis 8.

At this time, the extended section 92 of the water-absorbent fiber member 9 absorbs the low-temperature condensed water w and diffuses by capillary action to the cladding section 91 of the supercooling section 71 coated with the refrigerant line 7, because the temperature of the condensed water w is about 15~20 °C, lower than the temperature of the subcooling section 71 by about 30 °C, the sensible heat can be used to dissipate heat by using the temperature difference between the condensed water w and the supercooling section 71. In addition, the moisture adsorbed by the water-absorbent fiber member 9 evaporates due to heat, and can also be cooled by latent heat to further enhance the cooling effect. In this way, the temperature of the refrigerant in the supercooling section 71 can be further reduced to achieve the effect of improving the supercooling of the refrigerant. The coefficient of performance (COP) of the air conditioning system is an important indicator for judging its performance. It is also proportional to the energy efficiency ratio (EER). The coefficient of performance is defined as:

Where h ₁ is the 焓 value of point 1 in Figure 5, h ₂ ~ h ₄ and so on, when the subcooling degree of the refrigerant is increased, the position representing the point 3 will be more shifted to the left, that is, h ₃ Will decrease, and the process of point 3 to point 4 is adiabatic expansion at constant enthalpy, so h ₄ =h ₃ , and the increase in the value of h ₁ -h ₄ can increase the coefficient of performance (COP). Therefore, it can be concluded that when the degree of subcooling of the refrigerant is increased, the coefficient of performance will be improved, and the energy efficiency ratio (EER) will be improved to achieve the effect of energy saving. In addition to this, by covering the throttle element 4 with the water-absorbent fiber member 9, the energy loss caused by the flicker of the refrigerant can be reduced. Further, after the condensed water w is adsorbed, it is evaporated by the higher temperature inside the air conditioning system, and the temperature of the airflow passing through the condenser 2 can be lowered to improve the heat dissipation capability of the condenser 2.

It is worth mentioning that the water absorbing fiber member 9 of the foregoing embodiment is the supercooling section 71 and the throttle element 4 covering the refrigerant pipe 7, but the water absorbing fiber member 9 may also be coated only. In the supercooling section 71, the above-mentioned effect of improving the subcooling degree of the refrigerant can be achieved, thereby improving the coefficient of performance (COP) and the energy efficiency ratio (EER), and improving the heat dissipation capability of the condenser 2. The water absorbing member 9 is coated on the throttle member 4 in order to reduce the energy loss caused by the flicker of the refrigerant. Further, when the water-absorbent fiber member 9 is coated in other sections than the supercooling section 71 of the refrigerant line 7, the efficiency will be different because of the conditions of the refrigerant and the piping in each section of the refrigerant line 7. The status is not the same. For example, when the water-absorbent fiber member 9 is coated on the pipe between the outlet of the compressor 1 and the condenser 2, the aforementioned effect of improving the COP can also be achieved, but the outlet pipe of the compressor 1 is usually the highest temperature, the water-absorbing fiber. Piece 9 is prone to severe deterioration and is therefore not suitable. The temperature of the line between the evaporator 5 and the compressor 1 is lower than or approximately the temperature of the condensed water w, and it will not be effective for coating the water-absorbent fiber member 9. Therefore, it is preferable to coat the water-absorbent fiber member 9 with the supercooling section 71 of the refrigerant pipe 7.

Referring to FIG. 1 and FIG. 6, a second embodiment of the energy-saving air-conditioning system of the present invention is a split type air conditioner 100, which comprises an indoor unit 20, an outdoor unit 30, a throttle element 4, a refrigerant line 7 and a water absorbing fiber. Item 9. The indoor unit 20 includes an evaporator 5, an evaporating fan 6, and a water conduit 201. When the evaporator 5 is operated, condensed water w is generated. The evaporating fan 6 is used to generate airflow through the evaporator 5, and the water conduit 201 is used to discharge the condensed water. w. The outdoor unit 30 includes a compressor 1, a condenser 2, a condensing fan 3, and an outdoor chassis 301. The condensing fan 3 is for generating airflow through the condenser 2, and the outdoor chassis 301 is for carrying the condenser 2, and has a swell The water tank 301a, the water tank 301a is for receiving the condensed water w discharged from the water conduit 201 of the indoor unit 20.

Referring to Figures 6-8, the absorbent fibrous member 9 includes a tubular covering section 91 and a plurality of strips 92 extending from the bottom end of the covering section 91 (shown in Figure 7). The supercooling section 71 and the throttling element 4 covering the refrigerant pipe 7 extend from the cladding section 91 to the water tank 301a of the outdoor chassis 301, thereby increasing the area of the adsorbed condensed water w, and The covering portion 91 and the extending portion 92 can be adjusted in accordance with the specifications of the members such as the throttle member 4 and the refrigerant pipe 7 to enhance the water absorbing effect. However, the absorbent fibrous member 9 has another embodiment in which it is strip-shaped and can be wrapped in a sutured, entangled manner to coat the supercooling section 71 of the refrigerant line 7, as shown in FIG. In the present embodiment, the water-absorbent fiber member 9 may also cover only the supercooling section 71 of the refrigerant pipe 7, which is explained in the first embodiment and will not be described herein.

The second embodiment of the energy-saving air-conditioning system of the present invention has substantially the same principle except that the components described above are slightly different. Similarly, the low-temperature condensed water w is adsorbed by the water-absorbent fiber member 9, and the condensed water w and the supercooling section 71 are utilized. The temperature difference of the refrigerant in the refrigerant is sensible heat dissipation, and the latent heat of evaporation is further cooled to further enhance the effect of cooling the refrigerant in the refrigerant line 7 and the throttle element 4, thereby improving the degree of subcooling of the refrigerant, thereby improving the coefficient of performance (COP) and energy efficiency. Ratio (EER), achieving energy savings. However, the manner in which the water conduit 201 of the indoor unit 20 of the second embodiment is introduced can be appropriately distributed using a dispensing head (not shown) depending on the position and length of the supercooling section 71 of the refrigerant pipe 7, so that the water absorbing fiber member 9 can The condensed water w flowing out of the water conduit 201 is sufficiently absorbed, and the water tank 301a of the outdoor chassis 301 can collect excess condensed water w, so that the extended section 92 of the water absorbing fiber member 9 can continue to pass through. The capillary action is diffused to the supercooling section 71 of the refrigerant line 7 and the cladding section 91 of the throttle element 4.

In summary, the energy-saving air conditioning system of the present invention covers the supercooling section 71 of the refrigerant pipe 7 and the throttle element 4 through the water absorbing fiber member 9 and adsorbs the condensed water w, and utilizes the condensed water w and the refrigerant in the supercooling section 71. The temperature difference is sensible heat dissipation, and the quick-drying property of the water absorbing fiber member 9 is utilized to condense the latent heat of the condensed water to further enhance the effect of cooling the refrigerant, thereby improving the supercooling degree of the refrigerant, thereby improving the coefficient of performance (COP) and the energy efficiency ratio ( EER), the energy saving effect is achieved, and compared with the conventional air conditioning system, the above-mentioned effects can be achieved only by adding the water absorbing fiber member 9 to the refrigerant pipe 7, and the installation and maintenance cost is low, so that the present invention can be achieved. purpose.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

10‧‧‧Window type air conditioner

2‧‧‧Condenser

3‧‧‧Condensing fan

4‧‧‧throttle element

5‧‧‧Evaporator

6‧‧‧Evaporation fan

7‧‧‧Refrigerant piping

71‧‧‧Cooling section

8‧‧‧Chassis

9‧‧‧Water-absorbent fiber parts

91‧‧‧Covering section

92‧‧‧Extension

W‧‧‧condensed water

Claims (10)

An energy-saving air conditioning system comprising: a condenser; a flow element; an evaporator that causes condensate to be generated during operation; a refrigerant line that communicates with the condenser, the throttling element, and the evaporator, and has a pass a cold section, the supercooling section is connected to the outlet end of the condenser and the throttling element; a chassis for carrying the condenser and the evaporator, and capable of receiving condensed water; and a water absorbing fiber member covering the refrigerant pipe The subcooling section of the road and the throttling element are coupled to the chassis for adsorbing condensed water. The energy-saving air-conditioning system according to claim 1, wherein the water evapotranspiration rate of the water-absorbent fiber member is evaluated by an evapotranspiration method, and the residual water ratio (RWR) of the water-absorbent fiber member is less than or equal to 35% after 40 minutes. The energy-saving air-conditioning system according to claim 2, wherein the material of the water-absorbent fiber member comprises nylon fiber, elastic fiber, profiled polyester fiber or a combination of the materials. The energy-saving air-conditioning system of claim 1, wherein the water-absorbent fiber member comprises a tubular covering section and a plurality of strip-shaped extending sections, the covering section covering the supercooling section of the refrigerant pipeline, The extension extends from the cladding section to the chassis and is immersed in the condensed water. The energy-saving air-conditioning system according to claim 1, wherein the water-absorbent fiber member is in the form of a strip and can be wrapped in one of the sutures and wound around the refrigerant line. An energy-saving air conditioning system comprising: an indoor unit including an evaporator, which causes condensed water to be generated during operation, and a water conduit for discharging condensed water; an outdoor unit including a condenser and an outdoor chassis for Carrying the condenser and having a water tank for receiving condensed water discharged from the water conduit; a flow element; a refrigerant line connecting the condenser, the throttling element and the evaporator And having a subcooling section, the supercooling section is connected to the outlet end of the condenser and the throttling element; and a water absorbing fiber member covering the subcooling section of the refrigerant pipe and the throttling element and connecting the An outdoor chassis for adsorbing condensate. The energy-saving air-conditioning system according to claim 6, wherein the water evapotranspiration rate of the water-absorbent fiber member is evaluated by an evapotranspiration method, and the residual water ratio (RWR) of the water-absorbent fiber member is less than or equal to 35% after 40 minutes. The energy-saving air-conditioning system according to claim 7, wherein the material of the water-absorbent fiber member comprises nylon fiber, elastic fiber, profiled polyester fiber or a combination of the materials. The energy-saving air-conditioning system of claim 6, wherein the water-absorbent fiber member comprises a tubular covering section and a plurality of strip-shaped extending sections, the covering section covering the supercooling section of the refrigerant pipeline, The extension extends from the cladding section to the water tank of the outdoor chassis and is immersed in the condensed water. The energy-saving air-conditioning system according to claim 6, wherein the water-absorbent fiber member is in a strip shape and can be wrapped in one of the sutures and wound around the refrigerant pipe.