CN2797990Y

CN2797990Y - Air conditioner with increased refrigeration and reduced power consumption

Info

Publication number: CN2797990Y
Application number: CN 200520004880
Authority: CN
Inventors: 楚人震; 张守信; 刘建刚
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Group Corp
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Group Corp
Priority date: 2005-02-22
Filing date: 2005-02-22
Publication date: 2006-07-19
Anticipated expiration: 2015-02-22

Abstract

The utility model relates to an air conditioner capable of improving refrigerating capacity and reducing power. A throttling device in a refrigerating circuit is arranged in an indoor machine, and a high-pressure copper tube which is throttled is immersed in a condensed water receiving disk of the indoor machine in order to cool condensed water. Thereby, the supercooling degree of a condenser is improved, the refrigerating capacity is improved and the power is reduced.

Description

A kind of aircondition that improves refrigerating quantity and reducing power

Technical field

The utility model relates to a kind of aircondition.

Background technology

In the refrigeration system, the increase of degree of supercooling can improve refrigerating capacity.Accompanying drawing 1 is the pressure-enthalpy chart of refrigeration principle.According to the pressure-enthalpy chart of refrigeration principle as can be seen, compressor sucks the gaseous refrigerant a of low-pressure low-temperature, the compressed gaseous refrigerant b that becomes HTHP; B becomes the liquid refrigerant c of temperature in the high pressure through condenser condenses; C further cools off, and becomes the d that pressure is constant, temperature is lower; C-d was called cold but process, also was degree of supercooling, and degree of supercooling increases, and refrigerating capacity can corresponding increase.Because the increase of degree of supercooling, can reduce the mass dryness fraction of cold-producing medium after the throttling, can improve the refrigerating capacity of cold-producing medium unit volume flow, thereby improve the refrigerating capacity of complete machine, therefore increase the degree of supercooling of the preceding condensate liquid of throttling arrangement import, can improve specific refrigerating effect, just increase refrigerating capacity, and correspondingly reduce power.According to the related data record, every decline 1 degree of refrigerant temperature before the throttling, refrigerating capacity can improve about 0.85%.Therefore reduce entering the preceding refrigerant temperature of flow controller, promptly improve the degree of supercooling of cold-producing medium, become the important channel of improving refrigerating quantity and reducing power.The method of at present common raising degree of supercooling has multiple, as Chinese patent 96245187.8 disclosed a kind of airconditions, before flow controller, increase by a reverse-flow liquid-liquid heat exchanger as subcooler, can effectively improve degree of supercooling, but this design is at cold-storage/hot aircondition, refrigerant cools before utilizing the cold-storage trough inner water to throttling is not suitable for general domestic air conditioning, and complex structure; Chinese patent 02212677.5 discloses a kind of water-cooled cabinet air-conditioner, be to utilize underground water or indoor running water to cool off, but the prerequisite of this device is off-premises station to be placed indoor, and need utilize a large amount of water sources, cooling system pipeline complexity.Other 02267929.4 discloses a kind of heat reclamation device of multi-gang air conditioner, this device is to enter that high pressure liquid refrigerant copper pipe sealing earlier before the capillary restrictor enters the gas-liquid separator bottom and after gas-liquid separator top passes, be connected with capillary restrictor again, this design need not increase additional pipe, simple in structure, effectively strengthened the degree of supercooling of cold-producing medium, but with regard to improving refrigeration system efficient, still there is defective in this design, as: the low-temperature low-pressure refrigerant after throttling will be from the off-premises station to the indoor set through very long pipe, low-temperature refrigerant in the pipe must absorb the heat of outside air in this process, the loss cold; Can phase transformation produce the shwoot gas after low temperature liquid cold-producing medium in this pipe heat absorption simultaneously.As everyone knows, in cooling cycle system, do not enter evaporimeter and the shwoot gas that produces is harmful to,, reduced the evaporation effect of evaporimeter because these gases must occupy certain space in evaporimeter; These gases flow in system and also can consume certain merit simultaneously, and the many more wasted works of gas are big more, have obviously just increased the consumption of energy, have increased the load of refrigeration system, have reduced refrigerating capacity.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned defective, and a kind of aircondition that improves refrigerating capacity and reduce power is provided, and under the prerequisite that does not increase cost, improves refrigerating capacity, and reduces power.

The purpose of this utility model is achieved in that the throttling arrangement that will be usually located in the off-premises station is placed on indoor, place in the indoor set, and one section high-pressure refrigerant pipe before the throttling arrangement is immersed in the drip tray of indoor set, utilize this section of the cryogenic temperature condensation water cooling pipe in the drip tray, because the position of this pipe is before throttling arrangement, so the reduction of this pipe temperature has been equivalent to improve the degree of supercooling of condenser, play the effect that improves refrigerating capacity.

Need manage connection by a segment length between indoor apparatus of air conditioner and the off-premises station, common air-conditioning is because throttling arrangement is positioned at off-premises station, cold-producing medium becomes the liquid of low-temp low-pressure after throttling, this long section pipe of flowing through again enters indoor machine evaporation, low-temperature refrigerant must absorb external heat in this process, thereby the loss cold, and may produce the shwoot gas.The utility model is placed on throttling arrangement in the indoor set, a long section pipe of so just having avoided cold-producing medium after throttling, will pass through to indoor machine evaporation by off-premises station, both saved the loss of refrigeration capacity that the cold-producing medium heat absorption causes after the throttling with respect to common air-conditioning, and avoided heat absorption to produce the harm that the shwoot gas causes, make further heat radiation cold-producing medium this segment length's pipe before from off-premises station to the indoor set throttling arrangement again, be equivalent to increase the area of dissipation of condenser, increase degree of supercooling, thereby can improve the air conditioner refrigerating amount, reduce power.

Present air-conditioner does not all utilize refrigeration to dive cold and directly discharge the condensate water of separating out on the evaporimeter outdoor.The utility model is placed on throttling arrangement indoor, and utilizes the refrigerant pipe before the cryogenic temperature condensation water cooling throttling of separating out on the evaporimeter, further increases degree of supercooling, to improve refrigerating capacity.One section high-pressure copper pipe before the throttling can be immersed in the drip tray of indoor set, utilize this copper pipe of cryogenic temperature condensation water cooling in the drip tray.For increase the immersion area of condensed water as far as possible to copper pipe, can make this section copper pipe be close to the water saving tray bottom, or make the drip tray lower curtate form a groove, copper pipe is placed in the groove, or with a casing pipe sleeve in the copper pipe outside, the internal diameter of sleeve pipe is slightly larger than the high-pressure refrigerant external diameter of pipe, preferably is no more than a times of refrigerant tube external diameter, condensed water is entered from an end of sleeve pipe, flow out from the other end.

The utility model is not done big change to existing air-conditioning refrigeration system, only be with throttling arrangement by outdoor move to indoor, and the condensed water that utilizes evaporimeter to separate out improves degree of supercooling, the ingenious latent cold that utilizes the air-conditioner refrigeration, simple in structure, be applicable to any type of air-conditioning, under the prerequisite that does not increase cost, improve refrigerating capacity, reduced power.According to experiment, adopt the inventive method under the prerequisite that does not increase cost, can make refrigerating capacity improve 10%-15%.

Description of drawings

Fig. 1 is the pressure-enthalpy chart of refrigeration principle

Fig. 2 is a common air-conditioning device refrigerant system configurations schematic diagram

Fig. 3 is the utility model air-conditioner refrigerating system structural representation

Specific embodiment

Fig. 1 is the pressure-enthalpy chart of refrigeration principle.Compressor sucks the gaseous refrigerant a of low-pressure low-temperature, the compressed gaseous refrigerant b that becomes HTHP; B becomes the liquid refrigerant c of temperature in the high pressure through condenser condenses; C further cools off, and becomes the d that pressure is constant, temperature is lower; C-d was called cold but process, also was degree of supercooling, and degree of supercooling increases, the corresponding increase of refrigerating capacity meeting; Among the present invention since behind the condenser copper pipe in indoor drip tray through the cooling of low-temperature condensate, the cooling of tube connector mesohigh pipe pipeline in environment simultaneously, degree of supercooling can increase (the common air-conditioning degree of supercooling is c-d ') among the present invention, the unit mass flow refrigerating capacity (hf-he) of cold-producing medium increases, (common air-conditioning unit mass flow refrigerating capacity be (hf-he '), less than (hf-he)), so the also corresponding increase of the inventive method refrigerating capacity; The liquid refrigerant d of temperature is through the liquid refrigerant e of throttling arrangement throttling becoming low-pressure low-temperature in the high pressure, and e process evaporator evaporation becomes the gaseous refrigerant a of low-pressure low-temperature, comes back to and carries out kind of refrigeration cycle in the compressor.

Among Fig. 2 and Fig. 3, A and A ' agent's room inboard, the B and B ' the agent's room outside.In Fig. 2, compressor 1, condenser 2, throttling arrangement 3 are positioned at the outside, evaporimeter 4 is positioned at indoor, the compressed machine 1 of cold-producing medium is collapsed into the gaseous refrigerant of HTHP, in condenser 2, be cooled in the high pressure and enter throttling arrangement 3 step-downs by high-voltage tube behind temperature (temperature is higher than outside air temperature) liquid, become low-pressure low-temperature (temperature is lower than outside air temperature) liquid, enter the gaseous refrigerant of evaporimeter 4 evaporations becoming low-pressure low-temperature, come back to then and carry out kind of refrigeration cycle in the compressor.In Fig. 1, can see, low temperature liquid cold-producing medium after throttling arrangement 3 throttlings will be by a long tube by the outdoor indoor machine evaporation 4 that leads to, low-temperature refrigerant must absorb extraneous heat in this process, thereby lost the part cold, also may produce the shwoot gas after the low-temperature refrigerant heat absorption simultaneously, reduce the efficient of refrigeration system.

In Fig. 3, throttling arrangement 3 is placed on the indoor, so just avoided cold-producing medium after the throttling cooling, to grow section pipe to indoor machine evaporation through one again, waste cold and heat absorption generation flash gas in this process have been avoided, simultaneously, also make this section pipe partly become the radiator portion of condenser 2 by original waste cold, cold-producing medium 3 is further being lowered the temperature by this section pipe from condenser 2 to throttling arrangement, with respect to situation shown in Figure 2, loss of refrigeration capacity that the high-voltage tube heat absorption causes but also the area of dissipation that has been equivalent to increase condenser had not only been saved, increase degree of supercooling, thereby can improve the refrigerating capacity of refrigeration system, reduced power.

Simultaneously, throttling arrangement 3 is placed in indoor, can be installed in the indoor set, and the one section high-pressure copper pipe 5 (scheming the inner pipe that divides of medium and small frame of broken lines) that enter before the throttling arrangement 3 are immersed in the drip tray, because the condensate temperature in the drip tray is far below the refrigerant temperature in the high-voltage tube, therefore cold-producing medium is lowered the temperature in the water saving dish, and the reduction of this copper pipe temperature has been equivalent to improve the degree of supercooling of condenser, also plays the effect that improves refrigerating capacity.For increase the immersion area of condensed water as far as possible, can make this section copper pipe be close to the water saving tray bottom, or make the drip tray lower curtate form a groove copper pipe, copper pipe is placed in the groove, or with a casing pipe sleeve in the copper pipe outside, condensed water is entered from an end of sleeve pipe, flow out from the other end.

Claims

1, a kind of aircondition that improves refrigerating quantity and reducing power, comprise indoor set and off-premises station, and the refrigerating circuit of forming by compressor, condenser, throttling arrangement, evaporimeter and connecting line etc., it is characterized in that: throttling arrangement is positioned at the indoor of refrigerating circuit.

2, raising cold according to claim 1 reduces the aircondition of power, it is characterized in that; Throttling arrangement is positioned at indoor set.

3, raising cold according to claim 1 and 2 reduces the aircondition of power, it is characterized in that: one section refrigerant pipe before the described throttling arrangement places the drip tray in the indoor set.

4, raising cold according to claim 3 reduces the aircondition of power, it is characterized in that: a groove is arranged at described drip tray bottom, and one section refrigerant pipe before the described throttling arrangement places this groove.

5, raising cold according to claim 4 reduces the aircondition of power, it is characterized in that: the shape of described groove and high-pressure refrigerant tube shape and external diameter coupling, one section refrigerant pipe before the described throttling arrangement places this groove.

6, raising cold according to claim 3 reduces the aircondition of power, it is characterized in that: there is a sleeve pipe one section high-pressure refrigerant pipe outside before throttling arrangement, the internal diameter of sleeve pipe is slightly larger than the high-pressure refrigerant external diameter of pipe, condensed water is entered from an end of sleeve pipe, flow out from the other end, discharge through the drip tray drainpipe again.