CN2814235Y - Gilled heat exchanger - Google Patents
Gilled heat exchanger Download PDFInfo
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- CN2814235Y CN2814235Y CN 200520034634 CN200520034634U CN2814235Y CN 2814235 Y CN2814235 Y CN 2814235Y CN 200520034634 CN200520034634 CN 200520034634 CN 200520034634 U CN200520034634 U CN 200520034634U CN 2814235 Y CN2814235 Y CN 2814235Y
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- heat exchanger
- conditioning
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Abstract
The utility model discloses a gilled heat exchanger which is used for a heat pump air-conditioning and a speed regulating air-conditioning and regulates a refrigerant loop according to actual conditions. The refrigerant loop of the utility model comprises at least two loop units, and one end of two adjacent loop units is respectively connected with a series-parallel conversion device, and the other end is respectively connected with an inlet pipeline component and an outlet pipeline component. The conversion between the connection in series and parallel connection of the two adjacent loop units is achieved by the series-parallel conversion device so that the aim that the refrigerant loop is regulated according to the actual conditions is achieved. When the heat exchanger of the heat pump air-conditioning bears an evaporator, pressure drop is reduced, and the heat exchange of the speed regulating air-conditioning is optimized within wide range of temperature. The capability of the heat exchange of the heat exchanger is improved for the different processes of the heat exchange or the number of different loops of the running frequency of a compressor by redesigning the loop of the gilled heat exchanger so that the heat exchange efficiency and the energy efficiency ratio of the heat exchanger are enhanced, and the utility model is especially suitable for the heat pump air-conditioning and the speed regulating air-conditioning.
Description
Technical field
The utility model relates to a kind of pipe type heat exchanger of field of air conditioning, especially a kind of pipe type heat exchanger that uses in cooling-and-warming heat pump constant speed air-conditioning and speed governing air-conditioning.
Background technology
At present, pipe type heat exchanger basic structure generally comprises formations such as fin, fin end sheet, inlet ductwork assembly, elbow, export pipeline assembly and heat-transfer pipe, heat-transfer pipe and fin are to carry out swelling by machinery or hydraulic way, thereby make closely contact between its heat-transfer pipe and the fin, be beneficial to the transmission of heat.Cold-producing medium flows in heat-transfer pipe, carries out exchange heat by heat-transfer pipe and fin and outside air.When the cold-producing medium that flows in the heat-transfer pipe is in saturated gas-liquid and gas-liquid two-phase, temperature and pressure is a corresponding relation, if exist pressure to fall, temperature also will reduce so, the heat exchange of perfect condition is that cold-producing medium does not have pressure to fall when condensing heat-exchange and evaporation and heat-exchange, promptly keeps condensation or evaporating temperature constant.But actual conditions are impossible, and cold-producing medium flows in pipe must bring the pressure loss, and pressure falls the temperature of bringing and falls, and directly influences the logarithmic mean temperature of heat exchange, reduces refrigeration, heating capacity the most at last.In general, the cold-producing medium flow velocity is high more, and the coefficient of heat transfer is big more, and pressure drop is big more; Otherwise flow velocity is low, and the coefficient of heat transfer is also low, and pressure drop is also little.If pressure falls and influences refrigerating capacity and surpass the coefficient of heat transfer and improve, refrigerating capacity will increase and reduce with refrigerant flow.Therefore, performance product cooling and warming performance, the mass flow that must rationally arrange cold-producing medium.
At present, the pipe type heat exchanger pipeline flow process of using in the existing air-conditioning is in case assembling finishes, and cold-producing medium flow process is therein just determined, can't be changed according to the heat exchange actual conditions.This existing pipe type heat exchanger is little for single cold constant speed air-conditioning influence, but just different for the situation that heats and the speed governing air-conditioning (common name convertible frequency air-conditioner) of cooling-and-warming heat pump constant speed air-conditioning.In heat pump air conditioner, outdoor heat exchanger is undertaken the condenser effect when refrigeration, is responsible for the refrigerant gas of cooling down high-temperature high pressure, undertakes the evaporimeter effect in the process of heating, and is responsible for from the low temperature draw heat vaporized refrigerant liquid.Because cold-producing medium such as the R22 saturation pressure respective value difference under different temperatures, in the high temperature condensing state, the every reduction of pressure about 0.5 * 10
5Pa, temperature just reduces by 1 ℃, and in the low-temperature evaporation state (more than 0 ℃), pressure falls about 0.2 * 10
5Pa, temperature just reduces by 1 ℃, and below 0 ℃, pressure falls 0.1 * 10
5Pa, temperature just reduces by 1 ℃.Therefore heat exchanger more is to consider how to reduce pressure to fall when undertaking evaporimeter.Therefore, heat pump air conditioner designs the loop in any case, can only satisfy a kind of situation and reach optimum, perhaps in order to reach the purpose of balance quality parameter, the general method of getting median that adopts.Same reason, in the speed governing air-conditioning, speed governing compressor operation frequency can be from 30Hz to 90Hz more than, refrigerant flow change is very big, and refrigerating circuit is satisfied low frequency as 50～60Hz design when generally mating, so at compressor when high frequency turns round, flow is excessive, flow velocity is too high, will increase resistance greatly, makes air-conditioning Energy Efficiency Ratio when high frequency turns round descend very fast.The compressor of speed governing air-conditioning is when low frequency turns round, and refrigerating capacity is low, under the cold-producing medium flow velocity, can improve the coefficient of heat transfer with less refrigerant loop; But when speed governing compressor of air conditioner high frequency turned round, refrigerating capacity was big, and refrigerant flow is big, flow velocity is high, and existing pipe type heat exchanger refrigerant loop can't change according to the heat exchange actual conditions, therefore can't satisfy and adapt to the variation of this operating mode.
The utility model content
In order to overcome the deficiency that existing pipe type heat exchanger refrigerant loop can't change according to the heat exchange actual conditions, technical problem to be solved in the utility model provides a kind of pipe type heat exchanger that can regulate refrigerant loop according to actual conditions.
The technical scheme that its technical problem that solves the utility model adopts is: the pipe type heat exchanger, comprise the refrigerant loop that inlet ductwork assembly, elbow, export pipeline assembly and heat-transfer pipe are formed, refrigerant loop comprises two circuit units at least, one end of adjacent two circuit units is connected with the connection in series-parallel conversion equipment respectively, and the other end of circuit units connects inlet ductwork assembly and export pipeline assembly respectively.By the connection in series-parallel conversion equipment, can realize that being connected between polyphone and the parallel connection of adjacent two circuit units change, thereby realize regulating the purpose of refrigerant loop according to actual conditions.
The beneficial effects of the utility model are: owing to adopted refrigerant loop is divided at least two circuit units, the scheme that one end of adjacent two circuit units is connected with the connection in series-parallel conversion equipment respectively, thereby realize regulating refrigerant loop according to actual conditions, under the situation for example low in refrigerating capacity, that the cold-producing medium flow velocity is little, the mode that is converted to polyphone between the circuit units forms less refrigerant loop and improves the coefficient of heat transfer; But under the situation that refrigerating capacity is big, refrigerant flow is big, flow velocity is high, being converted to mode in parallel between the circuit units forms a plurality of loops and reduces the pressure loss and improve the heat exchange effect, the heat exchanger that makes heat pump air conditioner is when undertaking evaporimeter, reduce pressure and fall, the heat exchange in wider temperature range of speed governing air-conditioning is optimized.Loop by the redesign pipe type heat exchanger, use different feeder numbers for different heat transfer process, improve the heat exchanger exchange capability of heat by changing the loop, thereby improve the heat exchange efficiency and the Energy Efficiency Ratio of heat exchanger, be particularly suitable for using in cooling-and-warming heat pump constant speed air-conditioning and the speed governing air-conditioning.
Description of drawings
Fig. 1 is the schematic diagram of existing a kind of pipe type heat exchanger.
Fig. 2 is the schematic diagram of existing another kind of pipe type heat exchanger.
Fig. 3 is the schematic diagram of a kind of embodiment of the present utility model.
Fig. 4 is the schematic diagram of another kind of embodiment of the present utility model.
Fig. 5 is the distribution map of existing one-row condenser refrigerating circuit.
Fig. 6 is the distribution map that adopts scheme of the present utility model to transform to the refrigerating circuit of Fig. 5.
Mark among the figure: switching valve 1, control valve 2, inlet ductwork assembly 3, elbow 4, export pipeline assembly 5, heat-transfer pipe 6, fin 7, fin end sheet 8, connection in series-parallel conversion equipment 10, control valve 12, circuit units 20, circuit units 21.The flow direction of cold-producing medium when single arrow representative is freezed among the figure, the flow direction of cold-producing medium when the hollow arrow representative heats.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 3, Figure 4, pipe type heat exchanger of the present utility model, comprise the refrigerant loop that inlet ductwork assembly 3, elbow 4, export pipeline assembly 5 and heat-transfer pipe 6 are formed, at first the refrigerant loop with the pipe type heat exchanger is divided at least two circuit units 20,21, and refrigerant loop can be divided into a plurality of according to actual needs.Adjacent two circuit units, 20,21 adjacent ends are connected with connection in series-parallel conversion equipment 10 respectively, and the other end of two circuit units 20,21 connects inlet ductwork assembly 3 and export pipeline assembly 5 respectively.Inlet ductwork assembly 3 herein and export pipeline assembly 5 can be the pipeline assembly or the pipeline convergence point of certain branch's import, import department of branch in the refrigerant loop, also can be the pipeline assemblies in the total import of whole refrigerant loop, exit.The method that a plurality of circuit units are set can be on the refrigerant loop basis of existing pipe type heat exchanger, changes the elbow 4 of preparing place, adjustment loop into connection in series-parallel conversion equipment 10 and replaces getting final product.When the conversion of the refrigeration of heat pump air conditioner and heating mode and speed governing compressor of air conditioner frequency conversion running, utilize connection in series-parallel conversion equipment 10 to make pipe-line system in process of refrigerastion, play the elbow effect, but in the process of heating, play the effect of again flow process being reallocated, pipeline becomes a branch crossing at connection in series-parallel conversion equipment 10 places, has more a flow process.According to actual needs, by between its above-mentioned each circuit units 20,21 with the various combination of connection in series-parallel conversion equipment 10, but heat exchanging device loop transform arbitrarily, pipeline can have more one or more flow processs, up to meeting the requirements, bring into play the heat exchanger heat exchange efficiency to greatest extent.The effect of connection in series-parallel conversion equipment 10 be play polyphone connect and be connected in parallel between the effect of conversion, connection in series-parallel conversion equipment 10 can be accomplished in several ways, as long as polyphone and shunt circuit are set in pipeline simultaneously, and can realize easily by the open and close controlling of valve.
In order to make its connection in series-parallel conversion equipment 10 compact conformations, to make things convenient for the operation of changing between the connection in series-parallel, connection in series-parallel conversion equipment 10 can adopt the loop structure that is similar to the circuit bridge, as shown in Figure 3, Figure 4, connection in series-parallel conversion equipment 10 comprises 2,12 and switching valves 1 of two control valves, one end of two control valves 2,12 is connected with export pipeline assembly 5 with inlet ductwork assembly 3 respectively, the other end of two control valves 2,12 is connected with the two ends of switching valve 1 respectively, and also adjacent with two circuit units 20, the 21 respectively end in the two ends of switching valve 1 is connected.That is to say that between two pipelines that adjacent with two circuit units 20, the 21 respectively end of two control valves 2,12 is connected, putting up a bridge is connected with switching valve 1.During refrigeration, closed control valve 2,12 is opened switching valve 1,10 connection effects of playing elbow of connection in series-parallel conversion equipment this moment, two circuit units 20,21 polyphones; Heat or when needing, opening controlling valve 2,12 is closed 1, two circuit units of switching valve 20,21 and is connected.By the switching of control valve 2,12 and switching valve 1, realize that the connection in series-parallel between adjacent two circuit units 20,21 connects conversion.
Above-mentioned switching valve 1 can adopt spendable valve in any air-conditioning system, but for the ease of control, realizes series-parallel automatic conversion, and switching valve 1 preferably adopts magnetic valve.
Same reason, described two control valves 2,12 also can adopt spendable valve in any air-conditioning system, for example manual valve or magnetic valve, in order to save cost, realize its series-parallel automatic conversion, control valve 2,12 preferably adopts check valve, and two check valves are connected with the two ends of the port of export with switching valve 1 with entrance point respectively.Certainly, described two control valves 2,12 also can adopt magnetic valve.
The cold air-conditioning of list that refrigerating capacity 3500W is following, condenser generally can adopt 1 to advance 1 and go out loop design or 2 and advance 1 and go out the loop design, can bring into play the heat exchange effect to greatest extent, and reduce the loss that shunting brings.But fall if the heat pump of refrigerating capacity 3500W will be considered the pressure when heating, special below 0 ℃ the time, pressure falls about 0.1 * 10
5Pa, temperature just reduces by 1 ℃, be to improve the low-temperature heat exchange ability, 4 advances 2 to go out in the time of just the loop need being designed to freeze, 2 enters 4 loops that go out when heating, with the minimizing pressure drop.At present the 3500W heat pump air conditioner uses 4 to advance 2 and go out structure basically, and obviously existing circuit system has been sacrificed refrigerating efficiency and satisfied heating effect and improve when heat pump air conditioner designs, and general refrigeration efficiency is than descending 0.1～0.25, and ability reduces about 3%.If adopt this use novel, just can finely address this problem, still being equivalent to 1 during refrigeration advances 1 and goes out loop design or 2 and advance 1 and go out the loop design, but just can become 2 when heating advances 4 and goes out, as seen the unsteady flow journey can not sacrificed the refrigeration efficiency ratio when refrigeration, can give full play to system capability again when heating, improve the air-conditioning Energy Efficiency Ratio.
Can be with reference to said method, it is applied in the speed governing air-conditioning, in the open and close controlling of control system increase to control valve 2,12 and switching valve 1, and it is corresponding with the variation of compressor frequency, control the cold-producing medium flow process respectively according to the compressor operation frequency in the time of so just can and heating, reach the optimization system purpose in refrigeration.
Embodiment: as shown in Figure 6, adopt the technical solution of the utility model, transform in flow process loop to the pipe type heat exchanger in the existing 1Hp heat pump air conditioner off-premises station shown in Figure 5, by changing 1 elbow in centre into connection in series-parallel conversion equipment 10, pipeline is divided into two circuit units 20,21, two circuit units 20,21 adjacent ends are connected with connection in series-parallel conversion equipment 10 respectively, and the other end of two circuit units 20,21 connects inlet ductwork assembly 3 and export pipeline assembly 5 respectively.Refrigeration and to heat all be 2 to advance 2 and go out, heat into refrigeration stream to contrary direction.Connection in series-parallel conversion equipment 10 comprises 2,12 and switching valves 1 of two control valves, one end of two control valves 2,12 is connected with export pipeline assembly 5 with inlet ductwork assembly 3 respectively, the other end of two control valves 2,12 is connected with the two ends of switching valve 1 respectively, and also adjacent with two circuit units 20, the 21 respectively end in the two ends of switching valve 1 is connected.That is to say that between two pipelines that adjacent with two circuit units 20, the 21 respectively end of two control valves 2,12 is connected, putting up a bridge is connected with switching valve 1.Switching valve 1 adopts magnetic valve, and control valve 2,12 adopts check valve, and two check valves are connected with the two ends of the port of export with switching valve 1 with entrance point respectively.During refrigeration, open 1, two check valve of switching valve and under the effect of buffer brake, close automatically, 10 connection effects of playing elbow of connection in series-parallel conversion equipment this moment, two circuit units 20,21 polyphones, the cold-producing medium flow process is 1 to advance 1 and go out; When heating, close 1, two check valve conducting under the effect of positive direction pressure of switching valve, two circuit units 20,21 also connect, and the cold-producing medium flow process is 2 to advance 2 and go out.By the automatic shutter of two check valves and the switching of controlling switching valve 1, realize that the connection in series-parallel between adjacent two circuit units 20,21 connects conversion.
Claims (5)
1, pipe type heat exchanger, comprise the refrigerant loop that inlet ductwork assembly (3), elbow (4), export pipeline assembly (5) and heat-transfer pipe (6) are formed, it is characterized in that: refrigerant loop comprises two circuit units (20,21) at least, the end that adjacent two circuit units (20,21) are adjacent is connected with connection in series-parallel conversion equipment (10) respectively, and the other end of two circuit units (20,21) connects inlet ductwork assembly (3) and export pipeline assembly (5) respectively.
2, pipe type heat exchanger as claimed in claim 1, it is characterized in that: connection in series-parallel conversion equipment (10) comprises two control valves (2,12) and a switching valve (1), one end of two control valves (2,12) is connected with export pipeline assembly (5) with inlet ductwork assembly (3) respectively, the other end of two control valves (2,12) is connected with the two ends of switching valve (1) respectively, and also adjacent with two circuit units (20,21) the respectively end in the two ends of switching valve (1) is connected.
3, pipe type heat exchanger as claimed in claim 2 is characterized in that: described two control valves (2,12) are check valve, and two check valves are connected with the two ends of the port of export with switching valve (1) with entrance point respectively.
4, pipe type heat exchanger as claimed in claim 2 is characterized in that: described two control valves (2,12) magnetic valve.
5, as claim 2,3 or 4 described pipe type heat exchangers, it is characterized in that: described switching valve (1) is a magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034634 CN2814235Y (en) | 2005-06-28 | 2005-06-28 | Gilled heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520034634 CN2814235Y (en) | 2005-06-28 | 2005-06-28 | Gilled heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814235Y true CN2814235Y (en) | 2006-09-06 |
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ID=36949322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520034634 Expired - Fee Related CN2814235Y (en) | 2005-06-28 | 2005-06-28 | Gilled heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2814235Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563986A (en) * | 2012-03-21 | 2012-07-11 | 广东志高空调有限公司 | Condenser branch structure and condenser |
| CN108980992A (en) * | 2018-06-05 | 2018-12-11 | 广东美的暖通设备有限公司 | Heat exchanger assembly and air conditioner indoor unit for air conditioner indoor unit |
-
2005
- 2005-06-28 CN CN 200520034634 patent/CN2814235Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563986A (en) * | 2012-03-21 | 2012-07-11 | 广东志高空调有限公司 | Condenser branch structure and condenser |
| CN108980992A (en) * | 2018-06-05 | 2018-12-11 | 广东美的暖通设备有限公司 | Heat exchanger assembly and air conditioner indoor unit for air conditioner indoor unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN CHANGHONG ELECTRIC CO.,LTD. Free format text: FORMER OWNER: SICHUAN CHANGHONG ELECTRIC APPLIANCE CO., LTD. Effective date: 20090703 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090703 Address after: No. 35, Mian Xing Road, Gaoxin District, Sichuan, Mianyang Province: 621000 Patentee after: Sichuan Changhong Air-Coditioning Co., Ltd. Address before: No. 35, Mian Xing East Road, hi tech Zone, Sichuan, Mianyang Province: 621000 Patentee before: Sichuan Changhong Electrical Appliance Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 Termination date: 20120628 |