JP2012097911A - Heat exchanger and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To greatly attain cost reduction on both component cost and manufacturing cost, reduce variations among products in quality or characteristics (performance), and make products smaller in thickness (dimension) in the cross direction.SOLUTION: The heat exchanger includes a refrigerant pipe coil for heat-exchanging a refrigerant r distributing inside and an outside air by connecting to a refrigerant circuit wherein the refrigerant r is circulated in a refrigerating cycle. In such a configuration, a heat exchanging unit 2 wherein a single frame 3, a plurality of fins 4 supported by the single frame 3, and a first heat exchanger 5a and a second heat exchanger 5b wherein the fins 4 are additionally provided including a divided structure of a single refrigerant pipe coil K and which are placed side by side in an orthogonal direction to the blowing direction of an air A are provided integrally.

Description

  The present invention relates to a heat exchange device connected to a refrigerant circuit through which refrigerant circulates in a refrigeration cycle, and a method for manufacturing the same.

  In general, an air conditioner that adjusts the temperature and humidity of air is known. Normally, this type of air conditioner is connected to a refrigerant circuit in which a refrigerant in a refrigeration cycle circulates, and an internal refrigerant and an external A heat exchange device (fan coil unit) using a refrigerant tube coil that performs heat exchange with air is provided. Moreover, since this heat exchange apparatus adjusts the temperature and humidity of air, it is provided with both the cooler which cools air, and the heater which heats.

  Conventionally, as an air conditioner using a heat exchange device including both a cooler and a heater, an air conditioning system disclosed in Patent Literature 1 and a temperature and humidity adjusting device disclosed in Patent Literature 2 are known, Patent Document 1 includes a cooling coil for dehumidification disposed on the intake side and a waste heat medium coil that is disposed downstream of the cooling coil and heats the cooled air, and is separate from the waste heat medium coil. The heat medium heated by the apparatus is circulated, heat is exchanged between the heat medium of another system that circulates through the waste heat medium coil and the air cooled by the cooling coil to heat the air. An air conditioning system that cools a heat medium of a system device is disclosed, and in Patent Document 2, a cooler is arranged on the upstream side in the air passage of the space unit, and a heater is arranged on the downstream side in the air passage. Disclosed temperature and humidity control device That.

JP 2004-188070 A JP 2010-007960 A

  However, the conventional heat exchange apparatus provided in the above-described air conditioner has the following problems to be solved.

  First, since the cooler and the heater are configured as separate parts, at least two independent finished parts are required. Therefore, when compared with a single part, the number of parts is doubled and the number of assembly steps is also doubled, resulting in a significant cost increase in both part cost and manufacturing cost, as well as quality and characteristics (performance). Also in terms of surface, there is a tendency for variations between products.

  Secondly, in the case of this type of air conditioner, it is necessary to supply air adjusted to a set temperature to the room or the like. In order to avoid unnecessary interference between them, they are arranged at a certain distance. Therefore, the size of the product in the front-rear direction is increased, and there is a limit to the reduction of the product thickness. After all, it is not possible to adequately meet the demands of reducing the protrusion when attached to the wall as much as possible.

  The object of the present invention is to provide a heat exchange apparatus and a method for manufacturing the same, which solve the problems in the background art.

  In order to solve the above-described problem, the heat exchange device 1 according to the present invention is connected to a refrigerant circuit Cc in which the refrigerant r in the refrigeration cycle C circulates, so that heat between the refrigerant r flowing inside and the external air A is obtained. When configuring a heat exchange device including a refrigerant tube coil for exchange, a single frame portion 3, a plurality of fin portions 4 supported by the frame portion 3, and the fin portions 4 are attached. The heat exchange including a single refrigerant tube coil K divided structure and integrally configured with the first heat exchanger 5a and the second heat exchanger 5b juxtaposed in the direction Fc orthogonal to the air blowing direction Fw A unit 2 is provided.

  On the other hand, the manufacturing method of the heat exchange device according to the present invention connects the refrigerant r circulating in the refrigeration cycle C to the refrigerant circuit Cc in which the refrigerant r circulates, and exchanges heat between the refrigerant r circulating inside and the external air A. When manufacturing the heat exchange device 1 including the tube coil, a heat exchanger manufacturing process for manufacturing the first heat exchanger 5a and the second heat exchanger 5b including a single refrigerant tube coil K divided structure, A fin assembling step for assembling a plurality of fin portions 4 to one frame portion 3 and the first heat exchanger 5a and the second heat exchanger 5b are juxtaposed in a direction Fc orthogonal to the air blowing direction Fw. The heat exchanger unit 2 that is configured as a whole is obtained by passing through a heat exchanger assembly step that is assembled to the fins 4.

  Further, according to a preferred embodiment of the present invention, louvers 11a and 11b whose angles can be independently changed are arranged in front of the blowing direction Fw of the first heat exchanger 5a and the second heat exchanger 5b, respectively. In addition, at the rear of the first heat exchanger 5a and the second heat exchanger 5b in the air blowing direction Fw, air blowing fans 12a and 12b capable of independently controlling at least the air volume can be disposed, respectively. Furthermore, by arranging the first heat exchanger 5a on the upper side and the second heat exchanger 5b on the lower side, both the first heat exchanger 5a and the second heat exchanger 5b function as coolers. Cooling mode Mc, heating mode Mh that causes both the first heat exchanger 5a and the second heat exchanger 5b to function as heaters, the first heat exchanger 5a to function as a heater, and the second heat exchanger 5b The first dehumidification mode Mdx that allows the first heat exchanger 5a to function as a cooler and the second dehumidification mode Mdy that allows the second heat exchanger 5b to function as a heater is selected. At this time, the simple humidifier 13 that evaporates the drain water Wd generated from the first heat exchanger 5a by the second heat exchanger 5b when the second dehumidifying mode Mdy is used. Can be provided. Moreover, each connection port 5aq and 5bq which the 1st heat exchanger 5a and the 2nd heat exchanger 5b adjoin can be selected as the outflow port of the refrigerant | coolant r. On the other hand, the heat exchange areas of the first heat exchanger 5a and the second heat exchanger 5b can be the same or different. At this time, the first heat exchanger 5a and the second heat exchanger 5b Each coil member Km, Kn, Ko obtained by dividing the refrigerant tube coil K into three or more can be arbitrarily combined. In addition, the heat exchange apparatus 1 is suitable for use in the air conditioning apparatus 50 that performs air conditioning in the plant cultivation room H that performs plant cultivation.

  According to such a heat exchange device 1 and a method for manufacturing the same according to the present invention, the following remarkable effects can be obtained.

  (1) A single frame portion 3, a plurality of fin portions 4 supported by the frame portion 3, and the fin portions 4. The first heat exchanger 5a and the second heat exchanger 5b are integrally provided, so that the first heat exchanger 5a and the second heat exchanger 5b are included. Can be configured as a single part. Therefore, by halving the number of parts and the assembling man-hours associated therewith, it is possible to significantly reduce both the part cost and the manufacturing cost, and it is possible to reduce the variation between products in terms of quality and characteristics (performance).

  (2) Since the first heat exchanger 5a and the second heat exchanger 5b that include the division structure of the single refrigerant tube coil K and are juxtaposed in the direction Fc orthogonal to the air blowing direction Fw are provided. The thickness (dimension) in the front-rear direction can be reduced, and for example, it is possible to satisfactorily meet the demand for reducing the protrusion when attached to the wall surface as much as possible.

  (3) If the louvers 11a and 11b whose angles can be independently changed are respectively arranged in front of the blowing direction Fw of the first heat exchanger 5a and the second heat exchanger 5b according to a preferred embodiment, for example, the upper side When the first heat exchanger 5a is functioned as a heater and the lower second heat exchanger 5b is functioned as a cooler, the louver 11a of the first heat exchanger 5a is blown obliquely downward, By blowing air obliquely upward by the louver 11b of the second heat exchanger 5b, the air A discharged from the louvers 11a and 11b can be mixed (stirred) immediately. Therefore, even when the first heat exchanger 5a on the heating side and the second heat exchanger 5b on the cooling side are arranged up and down, the stability of the temperature of the air A can be ensured.

  (4) According to a preferred embodiment, if the blower fans 12a and 12b capable of independently controlling at least the air volume are respectively arranged behind the first heat exchanger 5a and the second heat exchanger 5b in the blowing direction Fw, for example, When the first heat exchanger 5a disposed on the upper side functions as a heater and the second heat exchanger 5b disposed on the lower side functions as a cooler, the quantitative ratio of heating air and cooling air Can be easily changed.

  (5) By arranging the first heat exchanger 5a on the upper side and the second heat exchanger 5b on the lower side according to a preferred embodiment, the first heat exchanger 5a and the second heat exchanger 5b A cooling mode Mc in which both function as a cooler, a heating mode Mh in which both the first heat exchanger 5a and the second heat exchanger 5b function as a heater, the first heat exchanger 5a as a heater, and First dehumidification mode Mdx that causes the second heat exchanger 5b to function as a cooler, second dehumidification mode Mdy that causes the first heat exchanger 5a to function as a cooler, and the second heat exchanger 5b to function as a heater If one of the above is selected and configured to be usable, the first dehumidification mode Mdx and the second dehumidification mode Mdy can be used, and in the cooling mode Mc, both the first heat exchanger 5a and the second heat exchanger 5b are used. Cooling action is involved in cooling Increase the versatility and applicability during use, such as being able to demonstrate the maximum capacity and exhibit the maximum capacity for heating both the first heat exchanger 5a and the second heat exchanger 5b by heating operation in the heating mode Mh. Can do.

  (6) If a simple humidifier 13 that evaporates the drain water Wd generated from the first heat exchanger 5a when the second dehumidification mode Mdy is used by the second heat exchanger 5b according to a preferred embodiment is provided, Without providing the humidification function, it is possible to humidify to some extent, and the added value (functionality) of the heat exchange device 1 can be further increased.

  (7) If each of the adjacent connection ports 5aq and 5bq of the first heat exchanger 5a and the second heat exchanger 5b is selected as an outlet of the refrigerant r according to a preferred embodiment, the connection between the adjacent connection ports 5aq and 5bq Therefore, the thermal interference between the first heat exchanger 5a and the second heat exchanger 5b can be minimized.

  (8) If the heat exchange areas of the first heat exchanger 5a and the second heat exchanger 5b are made different according to a preferred embodiment, the heat exchange device 1 can be optimized in accordance with various use environments. .

  (9) According to a preferred embodiment, the first heat exchanger 5a and the second heat exchanger 5b are formed by arbitrarily combining the coil members Km, Kn, Ko obtained by dividing the single refrigerant tube coil K into three or more. If combined, the ratio of the heat exchange areas of the first heat exchanger 5a and the second heat exchanger 5b can be easily changed (selected) by changing the combination (connection change) of the coil members Km, Kn, Ko. )can do.

  (10) According to a preferred embodiment, if the heat exchange device 1 is used in the air conditioner 50 that performs air conditioning in the plant cultivation room H that performs plant cultivation, it is particularly optimal from the viewpoint of securing an appropriate humidity environment in plant cultivation. Performance can be obtained.

The front block diagram of the heat exchange unit which has in the heat exchange apparatus which concerns on suitable embodiment of this invention, Side view of the heat exchange device, Parts diagram of the heat exchange unit, Front view of a heat exchange unit according to a modified embodiment of the present invention, Front view of heat exchange unit according to another modified embodiment of the present invention, Functional explanatory view showing a part of a side surface of the heat exchange unit in section, Overall circuit diagram of an air conditioner using the same heat exchange device, Block system diagram of the control system provided in the air conditioner, The perspective view of the plant cultivation room which shows the example of installation of the air harmony device, A partial circuit diagram showing a state in which the air conditioner is switched to the defrost mode, A partial circuit diagram in the cooling mode of the air conditioner, A partial circuit diagram in the heating mode of the air conditioner,

  Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

  First, the configuration of the heat exchange device 1 according to the present embodiment will be specifically described with reference to FIGS.

  As shown in FIG. 2, the heat exchange device 1 according to the present embodiment includes, as main components, a heat exchange unit 2 including a first heat exchanger 5a and a second heat exchanger 5b, a first louver 11a, and a second louver 11a. A louver 11b, a first blower fan 12a, and a second blower fan 12b are provided.

  The heat exchange unit 2 includes a single frame portion 3, a first heat exchanger 5a, a second heat exchanger 5b, and a plurality of fin portions 4. As shown in FIG. 3, the frame portion 3 is integrally formed in a vertically long rectangular shape. Moreover, the 1st heat exchanger 5a and the 2nd heat exchanger 5b can be manufactured using the single refrigerant | coolant tube coil K shown in FIG. That is, the refrigerant pipe coil K forms the refrigerant pipe L in a zigzag path so that a semicircular curved portion Kr in the central portion of the refrigerant pipe coil K is cut and divided into two parts so that a pair of heat exchanges are performed. The 1st heat exchanger 5a and the 2nd heat exchanger 5b used as an oven can be obtained. The refrigerant pipe L itself can be formed of a material having high thermal conductivity, and a known refrigerant pipe that can exchange heat with the external air A by circulating the refrigerant r therein can be used. Furthermore, the fin part 4 is an elongate strip-shaped plate formed with the material with high heat conductivity, and several sheets are prepared. Thus, the heat exchange unit 2 can be comprised by three types of components shown in FIG.

  Therefore, when manufacturing the heat exchange unit 2, three types of parts including a single frame portion 3, a single refrigerant pipe coil K and a plurality of fin portions 4 shown in FIG. A plurality of fin portions 4 are assembled to the inner surface of the frame portion 3, and the refrigerant tube coil K is assembled to the fin portions 4, and thereafter, a semicircular curved portion Kr in the central portion of the refrigerant tube coil K. Thus, the first heat exchanger 5a and the second heat exchanger 5b can be obtained simultaneously with the assembly, and the first heat exchanger 5a and the second heat exchanger 5 The exchanger 5b is sequentially arranged. That is, the first heat exchanger 5a and the second heat exchanger 5b are juxtaposed in the direction Fc perpendicular to the air A blowing direction Fw, and the target heat exchange unit 2 shown in FIG. 1 can be obtained. Such a manufacturing method is an example, and the first heat exchanger 5a and the second heat exchanger 5b are manufactured in advance by cutting the curved portion Kr of the refrigerant tube coil K. The first heat exchanger 5a and the second heat exchanger 5b may be assembled with the fins 4. Alternatively, the refrigerant tube coils K may be assembled with the fins 4 in advance, and this assembly may be assembled with the frame 3.

  Thus, the heat exchange unit 2 is a heat exchanger manufacturing which manufactures the 1st heat exchanger 5a and the 2nd heat exchanger 5b which include the division structure of the single refrigerant tube coil K as a basic manufacturing process. The process, the fin assembling process for assembling a plurality of fin parts 4 to the single frame part 3, and the first heat exchanger 5a and the second heat exchanger 5b in the direction Fc orthogonal to the air blowing direction Fw. And a heat exchanger assembly process for assembling to the fins 4... And through these manufacturing processes, the heat exchange unit 2 configured as a whole can be obtained.

  And by attaching a joint etc. to the both ends opening of the 1st heat exchanger 5a, while providing the connection ports 5ap and 5aq, respectively, attaching a joint etc. to the both ends opening of the 2nd heat exchanger 5b Connection ports 5bp and 5bq are provided. At this time, the adjacent connection ports 5aq and 5bq of the first heat exchanger 5a and the second heat exchanger 5b are selected as the outlet of the refrigerant r. Thereby, since the temperature gradient between the adjacent connection ports 5aq and 5bq can be minimized, thermal interference between the first heat exchanger 5a and the second heat exchanger 5b can be minimized.

  On the other hand, with respect to the heat exchange unit 2, the 1st louver 11a and the 2nd louver 11b, and also the 1st ventilation fan 12a and the 2nd ventilation fan 12b are assembled | attached. That is, as shown in FIG. 2, the 1st louver 11a and the 2nd louver 11b which can change an angle independently are each arrange | positioned ahead of the ventilation direction Fw of the 1st heat exchanger 5a and the 2nd heat exchanger 5b. To do. In this case, the first louver 11 a and the second louver 11 b can be attached using the inner surface of the frame portion 3. Thereby, each louver 11a, 11b can change an angle independently, and can change the ventilation direction in an up-down direction arbitrarily, respectively. If such independent first louver 11a and second louver 11b are provided, for example, the upper first heat exchanger 5a functions as a heater, and the lower second heat exchanger 5b serves as a cooler. When functioning, the air A discharged from each louver 11a, 11b is mixed (stirred) immediately after being blown obliquely downward by the first louver 11a and blown obliquely upward by the second louver 11b. Can do. Therefore, even when the first heat exchanger 5a on the heating side and the second heat exchanger 5b on the cooling side are arranged up and down, the stability of the temperature of the air A can be ensured.

  Moreover, the 1st ventilation fan 12a and the 2nd ventilation fan 12b which can control an air volume independently at least are each arrange | positioned in the ventilation direction Fw back of the 1st heat exchanger 5a and the 2nd heat exchanger 5b. In this case, as shown in FIG. 2, each of the blower fans 12 a and 12 b can be attached to the rear end of the frame portion 3 using auxiliary frames 31 a and 31 b indicated by phantom lines. If such an independent first blower fan 12a and second blower fan 12b are provided, for example, the first heat exchanger 5a disposed on the upper side functions as a heater and the second heat exchange disposed on the lower side. When the vessel 5b is caused to function as a cooler, the quantitative ratio of heated air and cooling air can be easily changed.

  Incidentally, since the heat exchange unit 2 includes the first heat exchanger 5a and the second heat exchanger 5b, the first heat exchanger 5a is arranged on the upper side, and the second heat exchanger 5b is arranged on the lower side. Thus, a cooling mode Mc that causes both the first heat exchanger 5a and the second heat exchanger 5b to function as a cooler, and heating that causes both the first heat exchanger 5a and the second heat exchanger 5b to function as a heater. Mode Mh, first heat exchanger 5a functions as a heater, and second heat exchanger 5b functions as a cooler, first dehumidification mode Mdx, first heat exchanger 5a functions as a cooler, and second Any one of the second dehumidifying modes Mdy that allows the two heat exchanger 5b to function as a heater can be selected and used. As a result, in addition to being able to use the first dehumidification mode Mdx and the second dehumidification mode Mdy, the maximum capacity related to cooling can be exhibited by the cooling operation of both the first heat exchanger 5a and the second heat exchanger 5b in the cooling mode Mc. At the same time, in the heating mode Mh, it is possible to enhance the versatility and applicability during use, such as being able to demonstrate the maximum capacity for heating both the first heat exchanger 5a and the second heat exchanger 5b by heating operation.

  In particular, FIG. 2 shows a usage mode of the first dehumidification mode Mdx in which the first heat exchanger 5a disposed on the upper side functions as a heater and the second heat exchanger 5b disposed on the lower side functions as a cooler. Show. In this case, the air A heated diagonally downward can be blown by the setting of the first louver 11a, and the air A cooled diagonally upward can be blown by the setting of the second louver 11b. Therefore, as described above, the cooling air A and the heating air A sent from the first heat exchanger 5a and the second heat exchanger 5b can be immediately mixed (stirred), and the first heat exchanger on the heating side can be mixed. Even when 5a and the second heat exchanger 5b on the cooling side are arranged up and down, the air A having a stable temperature is supplied. In addition, 32 shows the drain water tray which receives the drain water W which falls from the 2nd heat exchanger 5b in the figure.

  Next, a modified embodiment of the heat exchange device 1 will be described. The embodiment shown in FIG. 1 shows a case where the center portion of a single refrigerant tube coil K is divided into two parts by cutting, and the first heat exchanger 5a and the second heat exchanger 5b. The heat exchange area is the same. On the other hand, you may cut positions other than the center part of the refrigerant pipe coil K if needed. Thereby, since the heat exchange area of the 1st heat exchanger 5a and the 2nd heat exchanger 5b can be varied, optimization of the heat exchange apparatus 1 corresponding to various use environments etc. can be aimed at.

  Further, in the modified embodiment shown in FIG. 4, the first heat exchanger 5a and the first heat exchanger 5a are combined by arbitrarily combining the coil members Km, Kn, Ko obtained by dividing the single refrigerant tube coil K into three. The two heat exchanger 5b is configured. In particular, FIG. 4 shows an intermediate coil member Kn connected in series to the upper coil member Km, whereby the heat exchange area of the first heat exchanger 5a is changed to the heat exchange area of the second heat exchanger 5b. Can be larger. On the other hand, if the intermediate coil member Kn is connected in series to the lower coil member Ko, the heat exchange area of the second heat exchanger 5b is made larger than the heat exchange area of the first heat exchanger 5a. Can do. In FIG. 4, Lj indicated by a virtual line indicates a refrigerant pipe for connection. Such connection switching may be performed artificially or automatically using an electromagnetic on-off valve or the like. Although FIG. 4 shows the case where the single refrigerant tube coil K is divided into three, it may be divided into four or more if necessary. Thus, the first heat exchanger 5a and the second heat exchanger 5b are configured by arbitrarily combining the coil members Km, Kn, and Ko obtained by dividing the single refrigerant tube coil K into three or more. Then, the ratio of the heat exchange area of the first heat exchanger 5a and the second heat exchanger 5b can be easily changed (selected) by changing the combination (connection change) of each coil member Km, Kn, Ko. it can.

  Further, the modified embodiment shown in FIGS. 5 and 6 is based on the use of the second dehumidification mode Mdy in which the first heat exchanger 5a functions as a cooler and the second heat exchanger 5b functions as a heater. When the second dehumidifying mode Mdy is used, the simple humidifier 13 is attached to evaporate the drain water Wd generated from the first heat exchanger 5a by the second heat exchanger 5b. In this case, as shown in FIGS. 5 and 6, a predetermined space is formed by cutting a part of the fin portions 4 at the upper and lower intermediate positions, and a pair of drain water recovery plates 41 and 42 are provided in this space. In addition, a slit 43 is provided between the drain water recovery plates 41 and 42. Also, below the slit 43, a collar 44 having a semicircular cross section is disposed. The flange 44 is slightly inclined along the slit 43, and is configured to be capable of 180 [deg.] Rotational displacement about a shaft center by a rotary solenoid 45 coupled to one end of the flange 44. Further, water absorbents 46 such as water absorbent paper are disposed at appropriate positions of the first heat exchanger 5a below the flange 44. Reference numeral 47 denotes a vertical rod that guides the drain water W flowing out from the rod 44 to the drain water tray 32.

  Thereby, if the rotary solenoid 45 is controlled and the rod 44 is set at the recovery position Xu as shown in FIG. 6 (a), the drain water W dropped from the second heat exchanger 5b (cooler) The simple humidifier 13 does not function because it is collected by 44 and guided to the drain water tray 32 through the vertical rod 47. On the other hand, if the rotary solenoid 45 is controlled and the rod 44 is set at the non-recovery position Xn as shown in FIG. 6B, the drain water W of the second heat exchanger 5b is collected by the rod 44. It falls downward without being absorbed and is absorbed and retained by the water absorbing material 46. Since the water absorbing materials 46 are heated by the first heat exchanger 5a (heater), the drain water W held by the water absorbing materials 46 evaporates. As described above, the indoor heat exchanger 4 shown in FIG. 5 (FIG. 6) can function as the simple humidifier 13 using the drain water W. Therefore, when the air A is too dry for some reason, by using this simple humidifier 13, it is possible to perform simple humidification and to eliminate the need to collect the drain water W. it can. Therefore, if such a simple humidifier 13 is provided, a certain amount of humidification is possible without providing a separate humidification function, and the added value (functionality) of the heat exchange device 1 can be further increased.

  Thus, according to the heat exchange device 1 and the manufacturing method thereof according to the present embodiment, the single frame portion 3, the plurality of fin portions 4 supported by the frame portion 3, and the fin portions 4. And a heat exchange unit 2 formed integrally with a first heat exchanger 5a and a second heat exchanger 5b including a divided structure of a single refrigerant tube coil K. Although the heat exchanger 5a and the second heat exchanger 5b are included, they can be substantially configured as a single component. Therefore, by halving the number of parts and the assembling man-hours associated therewith, it is possible to significantly reduce both the part cost and the manufacturing cost, and it is possible to reduce the variation between products in terms of quality and characteristics (performance). In addition, since the first heat exchanger 5a and the second heat exchanger 5b that include a single refrigerant tube coil K divided structure and are juxtaposed in a direction Fc orthogonal to the air blowing direction Fw are provided before and after the product. The thickness (dimension) in the direction can be reduced, and for example, it is possible to sufficiently meet the demand for reducing the protrusion when attached to the wall surface as much as possible.

  Next, the air conditioning apparatus 50 suitable using the heat exchange apparatus 1 according to the present embodiment having such a configuration will be described with reference to FIGS.

  As shown in FIG. 9, the air conditioner 50 includes an outdoor unit Uo, an indoor unit Ui, and a controller Uc, and the outdoor unit Uo and the indoor unit Ui constitute a refrigeration cycle C having a refrigerant circuit Cc.

  As shown in FIG. 7, the outdoor unit Uo includes a compressor 51, an outdoor heat exchanger 52, an electromagnetic three-way valve 53 for mode switching, and an electromagnetic four-way mode switching as main components connected to the refrigerant circuit Cc. A valve 54, an outdoor first electronic expansion valve 55p, and an outdoor second electronic expansion valve 55q are provided. In this case, the compressor 51 has a discharge port 51s that discharges the refrigerant r and a suction port 51i that sucks the returned refrigerant r. The discharge port 51s includes the outdoor first strainer (filter) 57p and the outdoor first strainer. The discharge port 51s is connected in series to the outdoor second strainer 57q and the outdoor second electronic expansion valve 55q while being connected to the first connection port 53a of the three-way valve 53 via a serial connection of the one-electron expansion valve 55p. To the first shared connection port 54x of the four-way valve 54.

  Further, the suction port 51i of the compressor 51 is connected to the second connection port 53b of the three-way valve 53 and the second shared connection port 54y of the four-way valve 54, respectively. On the other hand, the connection port 52p at one end of the outdoor heat exchanger 52 is connected to the first external connection port 58 of the outdoor unit Uo, and the connection port 52q at the other end of the outdoor heat exchanger 52 is connected to the four-way valve 54. Connect to the first connection port 54a. Further, the second connection port 54b of the four-way valve 54 is connected to the second external connection port 59 of the outdoor unit Uo, and the shared connection port 53x of the three-way valve 53 is connected to the third external connection port 60 of the outdoor unit Uo. To do. In the outdoor unit Uo, reference numeral 61 denotes a blower fan that blows air to the outdoor heat exchanger 52.

  On the other hand, as shown in FIG. 7, the indoor unit Ui includes, as main components connected to the refrigerant circuit Cc, a heat exchange device (indoor heat exchanger) 1, an indoor first electronic expansion valve 71p, An indoor second electronic expansion valve 71q, electromagnetic on-off valves 72p and 72q, and an electromagnetic four-way valve 73 for defrosting are provided. In FIG. 7, the heat exchange device 1 is a portion surrounded by a virtual line and includes a heat exchange unit 2. The heat exchange unit 2 includes a first heat exchanger 5a and a second heat exchanger 5b, and the connection port 5aq at the other end of the first heat exchanger 5a is connected to the indoor first electronic expansion valve 71p and the indoor side first. The first connection port 75 of the indoor unit Ui is connected to the first external connection port 75 through a series connection of one strainer 74p, and the connection port 5bp at one end of the second heat exchanger 5b is connected to the indoor second electronic expansion valve 71q and the indoor It connects with the 1st external connection port 75 of the indoor unit Ui through the serial connection of the two strainers 74q. An electromagnetic on-off valve 72p is connected in parallel to the indoor first electronic expansion valve 71p, and an electromagnetic on-off valve 72q is connected in parallel to the indoor second electronic expansion valve 71q.

  On the other hand, the connection port 5ap at one end of the first heat exchanger 5a is connected to the first connection port 73a of the four-way valve 73, and the connection port 5bq at the other end of the second heat exchanger 5b is connected to the first connection port 73a of the four-way valve 73. Connect to the second connection port 73b. The first shared connection port 73x of the four-way valve 73 is connected to the second external connection port 76 of the indoor unit Ui via the indoor side strainer 78, and the second shared connection port 73y of the four-way valve 73 is connected to the indoor unit Ui. The third external connection port 77 is connected. In FIG. 7, 11a and 11b indicate the first louver and the second louver described above, and 12a and 12b indicate the first blast fan and the second blast fan described above, respectively. Further, a temperature sensor 81 and a humidity sensor 82 are disposed behind the blower fans 12a and 12b serving as the blower passages.

  On the other hand, the controller Uc governs overall control of the air conditioner 1, and at least switches and controls the three-way valve 53 and the four-way valves 54 and 73 described above. As shown in FIG. 8, the controller Uc includes a controller main body 83 using a microcomputer or the like, and the controller main body 83 has a computing function for performing various control processes and arithmetic processes. In particular, it includes a program memory 83p that stores programs for executing various controls such as a first dehumidifying mode Mdx, a second dehumidifying mode Mdy, a cooling mode Mc, and a heating mode Mh, which will be described later, and various data (setting data and database). A data memory 83d in which is written). The controller body 83 is accompanied by a display unit 84 capable of displaying various data such as temperature and humidity, and an input unit 85 having various operation keys. The input unit 85 includes a temperature setting unit 85t. , A humidity setting unit 85h, a mode switching unit 85s, and the like.

  Therefore, the temperature sensor 81 and the humidity sensor 82 are connected to the input port of the controller main body 83, respectively, and the compressor 51, the three-way valve 53, the four-way valves 54 and 73, the chamber are connected to the output port of the controller main body 83, respectively. The outer first electronic expansion valve 55p, the outdoor second electronic expansion valve 55q, the indoor first electronic expansion valve 71p, the indoor second electronic expansion valve 71q, the electromagnetic on-off valves 72p, 72q, and the blower fans 61, 12p, 12q Connect each one. Thereby, from the controller main body 83, the compressor 51, the outdoor first electronic expansion valve 55p, the outdoor second electronic expansion valve 55q, the indoor first electronic expansion valve 71p, the indoor second electronic expansion valve 71q, the blower fan A control signal is given to 61, 12p, and 12q, respectively, and a switching signal is given to each of the electromagnetic on-off valves 72p and 72q, the three-way valve 53, and the four-way valves 54 and 73.

  Next, the installation example and operation | movement of the air conditioning apparatus 50 containing the heat exchange apparatus 1 which concern on this embodiment are demonstrated with reference to FIGS.

  FIG. 9 shows an installation example of the air conditioner 50. The air conditioner 50 according to the present embodiment is optimally attached to a plant cultivation room H such as a horticultural house for performing plant cultivation as shown in FIG. Usually, in this type of plant cultivation room H, the humidity rises due to steam generated from plants and soil, and when the humidity is high, condensation occurs on the surface of the plant, causing deterioration in quality such as cracking of the plant and diseases. Easy to invite. Since the air conditioning apparatus 50 according to the present embodiment can accurately and stably control temperature and humidity (dehumidification), by attaching to such a plant cultivation room H, a viewpoint of ensuring an appropriate humidity environment in plant cultivation. You can get the best performance from.

  In FIG. 9, Uo indicates an outdoor unit installed outside the plant cultivation room H, and Ui indicates an indoor unit installed inside the plant cultivation room H. Further, the controller Uc constituted by the controller box can be installed near the entrance Hi of the plant cultivation room H. The controller Uc is connected to the indoor unit Ui via a signal line Le using a cable, and the indoor unit Ui and the outdoor unit Uo are connected by a signal line Lm and a piping line Lp. In this case, as shown in FIG. 7, the refrigerant pipe La connecting the first external connection port 58 of the outdoor unit Uo and the first external connection port 75 of the indoor unit Ui to the piping line Lp, and the second of the outdoor unit Uo. The refrigerant pipe Lb that connects the external connection port 59 and the second external connection port 76 of the indoor unit Ui, and the refrigerant pipe Lc that connects the third external connection port 60 of the outdoor unit Uo and the third external connection port 77 of the indoor unit Ui. Three refrigerant pipes are included. The example shows the case where one outdoor unit Uo and one indoor unit Ui are installed (one set), but usually a plurality of units (multiple sets) are installed according to the size of the plant cultivation room H, the cultivated plants, etc. Is done.

  Next, the operation of the air conditioner 1 will be described. Now, it is assumed that the mode switching unit 85s of the controller Uc is operated and the first dehumidifying mode Mdx is turned on. As a result, the three-way valve 53 and the four-way valves 54 and 73 are set to the dehumidifying positions shown in FIG. Thereby, the discharge port 51s of the compressor 51 is connected to the connection port 5ap side of one end of the first heat exchanger 5a via the three-way valve 53 and the four-way valve 73, and the discharge port 51s is further connected to the four-way valve 54. The other end of the outdoor heat exchanger 52 is connected to the connection port 52q side. The suction port 51i of the compressor 51 is connected to the connection port 5bq side at the other end of the second heat exchanger 5b via the four-way valves 54 and 73. In FIG. 7, dotted arrows along the circuit indicate the flow direction of the refrigerant r. In the first dehumidifying mode Mdx, the electromagnetic on-off valves 72p and 72q are switched from OFF to ON (open), and the indoor first electronic expansion valve 71p is controlled to close. As described above, the first dehumidifying mode Mdx can be easily and quickly switched by operating the mode switching unit 85s of the controller Uc. Accordingly, in the first dehumidification mode Mdx, the first heat exchanger 5a functions as a condenser, that is, operates as a heater (reheater), and the second heat exchanger 5b functions as an evaporator, that is, It becomes possible to operate as a cooler (dehumidifier).

  Next, the specific humidity (set humidity) is set by numerical input or selection by the humidity setting unit 85h of the controller Uc. Since the first dehumidification mode Mdx is intended for dehumidification, the set humidity is normally set lower than the current humidity, that is, the detected humidity detected by the humidity sensor 82. Therefore, in the first dehumidifying mode Mdx, the humidity is detected by the humidity sensor 82, and feedback control is performed on the humidity so that the detected humidity (detected humidity) becomes the set humidity. In this case, the controller Uc controls the indoor second electronic expansion valve 71q to be more open. In addition, when it cannot fully control only by control of the indoor side 2nd electronic expansion valve 71q, the rotation speed of the 2nd ventilation fan 12b, the discharge pressure of the compressor 51, the outdoor 2nd electronic expansion valve 55q as needed. It is possible to use control of the degree of opening and the like together. As described above, in the first dehumidification mode Mdx, the humidity is detected by the humidity sensor 82, and at least the indoor second electronic expansion valve 71q is varied so that the detected humidity becomes the set humidity. As a result, the target humidity environment can be accurately and stably maintained while ensuring the stability of the temperature control. Thereafter, the humidity is maintained at the set humidity until the first dehumidifying mode Mdx is turned off.

  On the other hand, the temperature decreases as the indoor second electronic expansion valve 71q is controlled to open. Since the temperature is detected by the temperature sensor 81, control to maintain the set temperature is performed. That is, normally, the temperature (set temperature) is set by the temperature setting unit 85t, and feedback control is performed on the temperature so as to be the set temperature. In this case, in order to raise the temperature, the opening of the indoor first electronic expansion valve 71p, which is a heating change element, the rotation speed of the first blower fan 12a, the discharge pressure of the compressor 51, the outdoor first electronic expansion Control is performed on the opening degree of the valve 55p and the like. Therefore, the temperature is always maintained at the set temperature regardless of the operation state in the first dehumidification mode Mdx.

  Thus, in the first dehumidification mode Mdx, the second heat exchanger 5b functions as a cooler, the first heat exchanger 5a functions as a heater, and the second heat exchanger 5b functions as an indoor second electron. The temperature is controlled by the expansion valve 71q and the first heat exchanger 5a is controlled by the indoor first electronic expansion valve 71p. Even if the temperature drops, the temperature can be kept constant by controlling the indoor first electronic expansion valve 71p and the like, and accurate and stable control for both humidity and temperature can be realized simultaneously.

  By the way, in the first dehumidification mode Mdx, the upper first heat exchanger 5a functions as a heater (reheater), and the lower second heat exchanger 5b functions as a cooler. Frost is likely to occur in the two heat exchanger 5b. The second dehumidifying mode Mdy is provided for defrosting, and the mode switching unit 85s is operated to turn on the second dehumidifying mode Mdy, whereby the four-way valve 73 is positioned on the defrosting side shown in FIG. Set to Thereby, the functions of the first heat exchanger 5a and the second heat exchanger 5b are reversed, the upper first heat exchanger 5a functions as a cooler, and the lower second heat exchanger 5b is a heater. In order to function as (reheater), defrosting is performed in the second heat exchanger 5b. It should be noted that switching from the first dehumidifying mode Mdx to the second dehumidifying mode Mdy only requires switching of the four-way valve 73.

  On the other hand, when the cooling mode Mc is selected, the operation (control) in the cooling mode Mc is performed. In the cooling mode Md, as shown in FIG. 11, the three-way valve 53 and the four-way valve 55 are each set to the cooling side position. That is, the three-way valve 53 is switched with respect to the first dehumidifying mode Mdx (FIG. 7), and the suction port 51i of the compressor 51 is connected to the third external connection port 60 of the outdoor unit Uo via the three-way valve 53. Connected. Note that both the electromagnetic on-off valves 72p and 72q on the indoor unit Ui side are switched off (closed), and the indoor first electronic expansion valve 71p is controlled to open. Thereby, both the 1st heat exchanger 5a and the 2nd heat exchanger 5a function as an evaporator, ie, operate | move as a cooler, and cooling with respect to the air A is performed. In such a cooling mode Mc, both the first heat exchanger 5a and the second heat exchanger 5b are cooled, so that the maximum capacity for cooling can be exhibited.

  Furthermore, when the heating mode Mh is selected, the operation (control) by the heating mode Mh is performed. In the heating mode Mh, as shown in FIG. 12, the three-way valve 53 and the four-way valve 55 are each set to the heating side position. That is, the four-way valve 54 is switched with respect to the first dehumidifying mode Mdx (FIG. 7), and the discharge port 51s of the compressor 51 is connected to the second external connection port 59 of the outdoor unit Uo via the four-way valve 54. While being connected, the suction port 51 i of the compressor 51 is connected to the other end connection port 52 q side of the outdoor heat exchanger 52 via the four-way valve 54. It is to be noted that the electromagnetic on-off valves 72p and 72q on the indoor unit Ui side are both turned off (closed), and the indoor first electronic expansion valve 71p is controlled to open, which is the same as the cooling mode Mc. Thereby, both the 1st heat exchanger 5a and the 2nd heat exchanger 5a function as a condenser, ie, operate | move as a heater, and the heating with respect to the air A is performed. In such a heating mode Mh, since both the first heat exchanger 5a and the second heat exchanger 5b are operated to be heated, the maximum capacity related to heating can be exhibited.

  As described above, the preferred embodiment and the modified embodiment have been described in detail. However, the present invention is not limited to such an embodiment, and the detailed configuration, shape, material, quantity, method, etc. Changes, additions and deletions can be made arbitrarily without departing from the scope. For example, the louvers 11a and 11b whose angles can be changed independently may be a manual type or an electric (automatic) type. Although the example which has arrange | positioned the two ventilation fans 12a and 12b which can control an air volume independently was shown, it does not exclude a single ventilation fan. Moreover, although it is suitable to select each connection port 5aq, 5bq which adjoins the 1st heat exchanger 5a and the 2nd heat exchanger 5b as the outflow port of the refrigerant | coolant r, the case where it selects as an inflow port is excluded. It is not a thing.

  The heat exchanging device 1 according to the present invention can be used for various air conditioners such as an air conditioner that constitutes a refrigeration cycle with an outdoor unit and an indoor unit, and a single air conditioner that integrates an outdoor unit and an indoor unit. .

  DESCRIPTION OF SYMBOLS 1: Heat exchange apparatus, 2: Heat exchange unit, 3: Frame part, 4 ...: Fin part, 5a: 1st heat exchanger, 5b: 2nd heat exchanger, 5aq: Connection port, 5bq: Connection port, 11a : Louver (first louver), 11b: louver (second louver), 12a: blower fan (first blower fan), 12b: blower fan (second blower fan), 13: simple humidifier, 50: air conditioner , C: refrigeration cycle, Cc: refrigerant circuit, r: refrigerant, A: air, K: refrigerant tube coil, Km: coil member, Kn: coil member, Ko: coil member, Fw: blowing direction, Fc: orthogonal direction, Wd: drain water, H: plant cultivation room

Claims (11)

  In a heat exchanging apparatus comprising a refrigerant tube coil for exchanging heat between refrigerant circulating inside and outside air by connecting to a refrigerant circuit in which refrigerant in the refrigeration cycle circulates, a single frame portion and the frame portion A plurality of fin portions supported by the first heat exchanger, the fin portions being attached thereto, including a split structure of a single refrigerant pipe coil, and juxtaposed in a direction orthogonal to the air blowing direction; A heat exchange device comprising a heat exchange unit integrally configured with a second heat exchanger.   The heat exchange device according to claim 1, wherein louvers whose angles can be changed independently are respectively arranged in front of the first heat exchanger and the second heat exchanger in the blowing direction.   3. The blower fan capable of independently controlling at least the air volume is disposed behind the first heat exchanger and the second heat exchanger in the blowing direction, respectively. Heat exchange device.   Cooling that causes both the first heat exchanger and the second heat exchanger to function as coolers by arranging the first heat exchanger on the upper side and the second heat exchanger on the lower side. Mode, a heating mode in which both the first heat exchanger and the second heat exchanger function as a heater, the first heat exchanger as a heater, and the second heat exchanger as a cooler The first dehumidifying mode to be functioned and the second dehumidifying mode in which the first heat exchanger functions as a cooler and the second heat exchanger functions as a heater can be selected and used. The heat exchange device according to claim 1, 2, or 3.   The heat exchanger according to claim 4, further comprising a simple humidifier that evaporates drain water generated from the first heat exchanger when the second dehumidification mode is used.   6. The heat exchange device according to claim 1, wherein each of adjacent connection ports of the first heat exchanger and the second heat exchanger is selected as a refrigerant outlet.   The heat exchange device according to any one of claims 1 to 6, wherein heat exchange areas of the first heat exchanger and the second heat exchanger are the same or different.   8. The first heat exchanger and the second heat exchanger are configured by arbitrarily combining coil members obtained by dividing a single refrigerant pipe coil into three or more. Heat exchange equipment.   It uses for the air conditioning apparatus which performs the air conditioning of the plant cultivation room which performs plant cultivation, The heat exchange apparatus in any one of Claims 1-8 characterized by the above-mentioned.   In a method for manufacturing a heat exchange device comprising a refrigerant tube coil for exchanging heat between a refrigerant circulating inside and external air by connecting to a refrigerant circuit in which the refrigerant in the refrigeration cycle circulates, A heat exchanger manufacturing process for manufacturing a first heat exchanger including a divided structure and a second heat exchanger; a fin assembling process for assembling a plurality of fin parts on a single frame part; and the first heat exchange. The heat exchanger unit is configured as a whole through a heat exchanger assembly step in which the heat exchanger and the second heat exchanger are juxtaposed in a direction orthogonal to the air blowing direction and assembled to the fin portion. A method for producing a heat exchange device, characterized in that:   The first heat exchanger and the second heat exchanger are configured by dividing a single refrigerant tube coil into three or more coil members and arbitrarily combining the coil members. The manufacturing method of the heat exchange apparatus of 10.

Images