CN201335513Y - Heat-exchanger flow-path structure of air-conditioning outdoor unit - Google Patents

Abstract

The utility model relates to a heat-exchanger flow-path structure of an air-conditioning outdoor unit. The heat-exchanger flow-path structure comprises a heat-exchanger including one or more rows of U-shaped condensing tubes, and is characterized in that cooling mediums are gathered after flowing out of the outlets of the condensing tubes, and a plurality of supercooling tubes are arranged; the supercooling tubes are arranged at the lower end of the heat-exchanger in parallel; and the total number u of the supercooling tubes is 4 to 24. Compared with the traditional structure adopting one or two supercooling tubes, the utility model has the advantages of great degree of supercooling, small flowed friction, good heat exchanging effect and the like; the problem of capability improvement is effectively solved without increasing the pipeline cost; at the same time, the problems such as incomplete defrosting caused by excessively thick frosts at the bottom of the heat-exchanger can be solved; moreover, the energy efficiency ratio of the system can be improved, the intrinsic action of the system can be exerted completely, thereby meeting the requirements of energy conservation, environmental protection and cost reduction.

Description

The heat exchanger flow circuit structure of air-conditioner outdoor unit

Technical field

The utility model relates to the heat exchanger flow circuit structure of a kind of air regulator, particularly off-premises station, belongs to the improvement technology of air regulator design field.

Background technology

In the air regulator new product designs, select for use bigger condenser and evaporimeter can improve heat exchange amount and Energy Efficiency Ratio, but that cost compare is higher; And heat exchanger reduces to reduce the heat exchange amount, influences the heat exchange effect; Also to consider the variable working condition situation simultaneously, so some surpluses with due regard in the design of heat exchanger.Existing air-condition heat exchanger will guarantee enough abilities when design, take into account degree of supercooling and defrosting problem and cost, therefore most of off-premises station heat exchanger generally all can be provided with 1～2 supercooling tube after outlet gathers, flow path is optimized simultaneously, to reach the purpose of low-cost high heat exchange efficiency.

China Patent No. ZL2007200300641 discloses a kind of fin-tube type reducing heat exchanger and the air-conditioner outdoor unit of this heat exchanger has been installed, its technical scheme is, a kind of fin-tube type reducing heat exchanger, it comprises inside and outside row's U-shaped pipe, the super cooled sect of heat exchanger bottom is characterized in that described inside and outside row's U-shaped pipe caliber difference.Row's U-shaped pipe is greater than the technical scheme that effluxes the U-shaped pipe in adopting, the import cold-producing medium is a high temperature and high pressure gas, adopt internal diameter can effectively reduce the pressure loss than bassoon, improve flow, at the stream back segment, refrigerant volume reduces greatly, and internal diameter can enhanced heat exchange than tubule, and integral body has improved the heat exchanger exchange capability of heat.It is said that the heat exchange efficiency that it can solve the prior art existence is low, exchange capability of heat is difficult to problems such as raising.But its super cooled sect is still very short, DeGrain.

The utility model content

The purpose of this utility model is on original heat exchanger basis supercooling tube to be optimized design, a kind of heat exchanger flow circuit structure of improved air-conditioner outdoor unit is provided, makes the heat exchange better effects if of heat exchanger, increase degree of supercooling, improve Energy Efficiency Ratio, to overcome weak point of the prior art.

Press the heat exchanger flow circuit structure of a kind of air-conditioner outdoor unit of this purpose design, comprise the heat exchanger that a row and above U-shaped condenser pipe constitute, its architectural feature is to flow out at refrigerant after the condenser pipe outlet gathers many supercooling tubes to be set, and described many supercooling tubes are arranged in parallel the lower end at heat exchanger.The total u that is used for doing the U-shaped pipe of supercooling tube counts K according to the row of heat exchanger and determines, is determined by following formula with the relation of row's number K:

$\frac{\mathrm{<figure-callout\; id="2"\; label="u\; k"\; filenames="Y20082020220900051.png"\; state="\{\{state\}\}">u</figure-callout>}}{k^{}}=1~3.$

The row of heat exchanger counts K and is generally 2～4; The total u of supercooling tube is 4～24.

Described supercooling tube is to be formed in parallel by two or more sets U-shaped pipes with length.

Supercooling tube on this heat exchanger takes form in parallel to design.Supercooling tube partly is to be formed in parallel by two or more sets U-shaped pipes with length.So just can make the higher air regulator of cost performance on the machine of former same model.Proof adopts the air regulator complete machine performance of the heat exchanger with this type supercooling tube more a lot of than conventional height by experiment, and average ability improves 10%, and efficiency improves 3%.Compare with traditional 1～2 supercooling tube of employing, it is big to have degree of supercooling, and flow resistance is little, advantages such as good effect of heat exchange, do not have at the pipeline cost under the situation of any increase, effectively solve the capability improving problem, simultaneously, solved problems such as the blocked up and defrosting of heat exchanger bottom frosting is not clean, in addition, also improved the Energy Efficiency Ratio of system, given full play to the effect of system itself, the requirement that meet energy-conserving and environment-protective, reduces cost.

Description of drawings

Fig. 1 is the structural representation of existing heat exchanger.

Fig. 2 is the perspective view of the utility model one embodiment.

Fig. 3 is the main TV structure schematic diagram of Fig. 2.

Fig. 4 is the first embodiment heat exchanger flow circuit simplified schematic diagram.

Fig. 5 is the second embodiment heat exchanger flow circuit simplified schematic diagram.

Fig. 4, Fig. 5 are example with the heat exchanger of two row's fins, 36 long U-shaped pipes all.

The specific embodiment

Referring to Fig. 2-Fig. 5, the heat exchanger flow circuit structure of air-conditioner outdoor unit comprises heat exchanger 1, bourdon's tube 2, light pipe 3, capillary 4 and distributor 5, has been arranged in parallel many supercooling tubes 6 in the lower end of heat exchanger 1.Long U-shaped pipe is coupled together by semicircle pipe, threeway etc. according to the stream schematic diagram, form heat exchanger flow circuit smoothly, be installed in then in the corresponding outdoor machine system.So just can make the higher air regulator of cost performance on the machine of former same model.

When k gets 2, $\frac{u}{{\mathrm{<figure-callout\; id="2"\; label="k"\; filenames="Y20082020220900051.png"\; state="\{\{state\}\}">k</figure-callout>}}^2}=1.5$ The time, be used for being the U-shaped pipe sum u=6 of supercooling tube, as shown in Figure 4; When k gets 2, $\frac{u}{{\mathrm{<figure-callout\; id="2"\; label="k"\; filenames="Y20082020220900051.png"\; state="\{\{state\}\}">k</figure-callout>}}^2}=3$ The time, be used for being supercooling tube U-shaped pipe sum u=12, as shown in Figure 5.These two kinds of streams all are to gather after refrigerant flows out condenser pipe by the parallel form supercooling tube of flowing through again, thereby increase degree of supercooling, improve systematic energy efficiency ratio.Two kinds of dissimilar streams of analysis-by-synthesis are more suitable in cooling and heating air conditioner for stream shown in Figure 4, and refrigeration has good degree of supercooling, is difficult for frosting when heating, and the refrigerant resistance is little; More can be fit to the single cooler type for stream shown in Figure 5, the parallel connection of 12 U-shaped pipes can increase degree of supercooling, can improve the refrigerating capacity and the Energy Efficiency Ratio of system.7 is that refrigerant inlet tube, 8 is outlet among the figure.

Claims (5)

1. the heat exchanger flow circuit structure of an air-conditioner outdoor unit comprises the heat exchanger (1) that a row and above U-shaped condenser pipe constitute, and it is characterized in that after the outlet of refrigerant outflow condenser pipe gathers many supercooling tubes (6) being set; Described many supercooling tubes are arranged in parallel the lower end at heat exchanger.

2. according to the heat exchanger flow circuit structure of the described air-conditioner outdoor unit of claim 1, the total u that it is characterized in that being used for doing the U-shaped pipe of supercooling tube counts K according to the row of heat exchanger and determines, is determined by following formula with the relation of row's number K:

$\frac{u}{k^2}=1~3.$

3. according to the heat exchanger flow circuit structure of the described air-conditioner outdoor unit of claim 2, it is 2-4 that the row who it is characterized in that described heat exchanger counts K; The total u of supercooling tube is 4～24.

4. according to the heat exchanger flow circuit structure of claim 1 or 2 described air-conditioner outdoor units, it is characterized in that described supercooling tube is to be formed in parallel by two or more sets U-shaped pipes with length.

5. according to the heat exchanger flow circuit structure of the described air-conditioner outdoor unit of claim 1, it is characterized in that also being disposed with on the described heat exchanger bourdon's tube (2), light pipe (3), capillary (4) and distributor (5).

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