KR20090014595A - Piping kit for air conditioning apparatus and air handling unit having the same - Google Patents

Abstract

A piping kit of an air conditioner and an air handling unit having the same are provided to simplify the coupling of pipes and the mounting of parts with respect to the pipes. A case(31) is mounted with at least a refrigerant supply pipe(32) for guiding refrigerant from an outdoor unit to an indoor heat exchanger, at least a refrigerant recovery pipe(33) for guiding the refrigerant from the indoor heat exchanger to the outdoor unit, and at least a refrigerant expansion unit(34a,34b) mounted to the refrigerant supply pipe.

Description

Piping kit for air conditioning unit and air handling unit with same {PIPING KIT FOR AIR CONDITIONING APPARATUS AND AIR HANDLING UNIT HAVING THE SAME}

The present invention relates to a piping kit for an air conditioning apparatus, and more particularly, to an air handling unit equipped with a piping kit for an air conditioning apparatus that enables easy installation of pipes in the field and to mount components corresponding to the environment of the apparatus. It is about.

Air handling unit (AIR HANDLING UNIT) is commonly used for coordination of large buildings such as buildings and hotels. The air handling unit inhales air from a plurality of indoor spaces and then harmonizes the air with a heat exchanger. Harmonized air is supplied back to each interior space. Korean Unexamined Patent Publication No. 2005-101301 (published 21 October 2005) discloses such an air handling unit.

The air handling unit disclosed in the above publication includes a plurality of heat exchangers for heat exchange of circulating indoor air, separate outdoor units connected by respective heat exchangers and pipes, and connecting them for decompression expansion of refrigerant supplied from the outdoor unit to the heat exchanger. Refrigerant expansion device (electromagnetic expansion valve, capillary tube, etc.) installed in the pipe, and the temperature sensor is installed in the pipe connected to each heat exchanger for controlling the superheat degree of the heat exchanger.

The air handling unit determines the cooling capacity in consideration of the air conditioning environment of the building, and installs heat exchangers therein to correspond thereto. That is, the number of heat exchangers is determined in consideration of the cooling capacity, and installed in the equipment when the air handling unit is installed in the building. Of course, the piping connecting the outdoor unit and the heat exchanger, the refrigerant expansion device, and various sensors are also mounted at this time.

Since the above-described air handling unit installs a heat exchanger, a pipe, a refrigerant expansion device, and the like in the field, there may be a problem in that the refrigerant expansion device or the like is not fitted with the device. That is, the on-site refrigerant expansion device may not meet the specifications of the provided equipment or may not meet the cooling capacity. In this case, the performance of the device may be degraded or control of the system may be unstable.

In addition, such an air handling unit is complicated to install because a number of pipes, refrigerant expansion device, temperature sensor, etc. must be installed in the building.

SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and an object of the present invention is to provide a piping kit for an air conditioning apparatus and an air handling unit having the same so that related parts can be mounted as suitable for the device when installing the pipes.

Another object of the present invention is to provide a pipe kit for an air conditioning apparatus and an air handling unit having the same, which can easily install pipes and components mounted on the pipes.

The air conditioning device piping kit according to the present invention for achieving the above object and the case; At least one refrigerant supply pipe installed in the case and guiding the refrigerant from the outdoor unit to the indoor heat exchanger; At least one refrigerant return tube installed in the case and guiding the refrigerant from the indoor heat exchanger to the outdoor unit; At least one refrigerant expansion device installed in the refrigerant supply pipe inside the case.

Both ends of the refrigerant supply pipe and the refrigerant return pipe are exposed to the outside of the case for connection with the outdoor unit or the pipes to the indoor heat exchanger side.

The refrigerant supply pipe includes one inlet pipe connected to the outdoor unit side pipe and a plurality of discharge pipes branched from the inlet pipe and connected to the indoor heat exchanger side pipes, and the refrigerant expansion device includes the plurality of discharge pipes. Are installed on each.

The refrigerant return pipe includes one discharge pipe connected to the outdoor unit side pipe and a plurality of inlet pipes branched from the discharge pipe and connected to the indoor heat exchanger side pipes.

The pipe kit further includes at least one temperature sensor installed in at least one of the refrigerant supply pipe and the refrigerant return pipe.

The pipe kit further includes a control unit for controlling the operation of the air conditioner or controlling the operation of the refrigerant expansion device based on the sensing information of the temperature sensor.

The control unit includes a control circuit portion and a control box for receiving the control circuit portion.

The control box includes a plurality of wiring holes through which wiring passes, and a plurality of wiring fixing members installed in the plurality of wiring holes for fixing the wiring and closing the wiring holes in a waterproof manner.

The refrigerant supply pipe is provided with a filter for filtering foreign matter.

The air handling unit according to the present invention includes a main body, a blower installed in the main body for blowing the indoor air, at least one heat exchanger installed in the main body for heat exchange of air, and an outer side of the main body. And at least one outdoor unit connected to a plurality of pipes, and at least one pipe kit detachably mounted to the plurality of pipes, wherein the pipe kit includes a case; At least one refrigerant supply pipe installed in the case and guiding the refrigerant from the outdoor unit to the indoor heat exchanger; At least one refrigerant return tube installed in the case and guiding the refrigerant from the indoor heat exchanger to the outdoor unit; At least one refrigerant expansion device installed in the refrigerant supply pipe inside the case.

The air conditioning device piping kit according to the present invention is a part of the pipes connecting the outdoor unit and the heat exchangers of the main body and the parts mounted thereon are pre-installed in the case, and when installed in the equipment, air conditioning because only need to connect them to the pipe There is an effect to facilitate the installation of the pipes of the device and the components mounted thereto.

In addition, the piping kit for the air conditioner according to the present invention is a component that does not meet the specification of the device when installing the air conditioner in the field because the components such as the refrigerant expansion device, the temperature sensor, etc. built in the case is set in advance to suit the specification of the device The mounting can be prevented. Therefore, it is possible to minimize the deterioration of the device performance or the unstable control of the system due to the incorrect mounting of parts.

Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail.

1 shows an air handling unit to which a piping kit according to the present invention is applied. The air handling unit includes a first inlet 11 and a first outlet 12 respectively formed on both sides of the upper surface of the main body 10. The first inlet 11 is connected to the suction duct 13 for guiding air from the plurality of indoor spaces of the building to the main body 10. The first discharge port 12 is connected to the discharge duct 14 for guiding the air harmonized in the main body 10 to a plurality of indoor space of the building. Therefore, indoor air may be introduced into the main body 10 through the first inlet 11, may be discharged to the first outlet 12 after being harmonized in the main body 10.

In the main body 10, a first blower 15, a ventilator 16, a heat exchange unit 17, and a second blower 18 are sequentially installed from the first inlet 11 to the first outlet 12. . The first blower 15 sucks air from the first inlet 11 and blows the air toward the ventilation device 16. The ventilator 16 includes a second inlet 16a through which outside air is introduced into the upper portion of the main body 10 and a second outlet 16b through which air therein is discharged. The ventilation device 16 allows the outside air introduced through the second inlet 16a to mix with the indoor air blown from the first blower 15. That is, some of the circulating indoor air is exchanged with the outside air. Ventilated air is approximately 30% of circulating indoor air.

The air passing through the ventilator 16 is heat exchanged while passing through the heat exchange unit 17. The heat exchange unit 17 has a form in which a plurality of heat exchangers 17a, 17b, 17c, 17d, ... are arranged in series or in parallel. The number of heat exchangers 17a, 17b, 17c, 17d, ... can be increased or decreased to meet the required cooling capacity, taking into account the building's air conditioning environment. The second blower 18 blows the harmonized air to the first outlet 12 while passing through the heat exchange unit 17. Therefore, the indoor air harmonized in the main body 10 may be supplied to the room through the first outlet 12.

Outside the main body 10, a separate outdoor unit 20 is installed. The outdoor unit 20 may be configured in one or a plurality according to the number (cooling capacity) of the heat exchangers 17a, 17b, 17c, 17d, ... installed in the main body 10. Although not shown in the drawings, each outdoor unit 20 includes an outdoor heat exchanger that exchanges heat with outside air, an outdoor air blower that blows outside air, a compressor that compresses a refrigerant, and the like. The outdoor unit 20 is connected to the heat exchange unit 17 inside the main body 10 by a plurality of pipes (21, 22, 23, 24).

Piping kits 30 are installed in the pipes 21, 22, 23, and 24 connecting the outdoor unit 20 and the heat exchange unit 17. As shown in FIGS. 2 and 3, each of the piping kits 30 includes a case 31, a refrigerant supply pipe 32, a refrigerant return pipe 33, and a plurality of refrigerant expansion devices installed inside the case 31. 34a, 34b, and a plurality of temperature sensors 35a, 35b, 35c, 35d.

As shown in FIGS. 2 and 3, the refrigerant supply pipe 32 and the refrigerant return pipe 33 have side surfaces of the case 31 such that both ends 32d, 32e, 32f, 33d, 33e, and 33f are exposed to the outside. It extends through the case 31 to the outside. When the pipe kit 30 is installed, the pipes 21 and 22 extending from the outdoor unit 20 and the pipes 23 and 24 extending from the heat exchange unit 17 of the main body 10 are casing 31. It is to be connected to both ends 32d, 32e, 32f, 33d, 33e, 33f of the refrigerant supply pipe 32 and the refrigerant return pipe 33, respectively.

The refrigerant supply pipe 32 is one inlet pipe 32a connected to the pipe 22 toward the outdoor unit 20 and branched from the inlet pipe 32a to the heat exchange unit 17 side pipes of the main body 10 ( And two discharge pipes 32b and 32c connected to 24. The two discharge pipes 32b and 32c are branched from the inlet pipe 32a by the branch socket 36. The refrigerant introduced into the one inlet pipe 32a from the outdoor unit 20 can be supplied to the heat exchange unit 17 of the main body 10 through the two discharge pipes 32b and 32c. Each of the discharge pipes 32b and 32c of the refrigerant supply pipe 32 is provided with refrigerant expansion devices 34a and 34b for decompression expansion of the refrigerant, respectively. 2 and 3 employ an electromagnetic expansion valve as the refrigerant expansion device, but a conventional capillary tube or the like may be used as the refrigerant expansion device. In addition, the two discharge pipes (32b, 32c) are provided with temperature sensors (35a, 35b) for sensing the temperature of the refrigerant supplied to the heat exchange unit, respectively. In addition, filters 37a, 37b, and 37c for filtering foreign matter are installed in the inlet pipe 32a and the two discharge pipes 32b and 32c of the refrigerant supply pipe 32, respectively.

The refrigerant return pipe 33 is one discharge pipe 33a connected to the pipe 21 on the outdoor unit 20 side, branched from the discharge pipe 33a, and pipes 23 on the heat exchange unit 17 side of the main body 10. And two inlet pipes 33b and 33c connected to each other. The two inflow pipes 33b and 33c are branched by the branch socket 38. The refrigerant introduced into the two inflow pipes 33b and 33c from the heat exchange unit 17 side of the main body 10 is joined to one discharge pipe 33a and then flows toward the outdoor unit 20. In addition, the two inflow pipes 33b and 33c are provided with temperature sensors 35c and 35d respectively for sensing the temperature of the refrigerant passing through the heat exchange unit 17 of the main body 10.

In this embodiment, the refrigerant supply pipe 32 is branched from one inlet pipe 32a to two discharge pipes 32b and 32c, and the refrigerant return pipe 33 is provided at two inlet pipes 33b and 33c. Although the case where it integrates with the discharge pipe 33a was shown, this invention is not limited to this. The refrigerant supply pipe and the refrigerant return pipe may be a single pipe, and each may be branched into three or more flow paths as necessary. Of course, in this case, the coolant expansion device and the temperature sensor installed in the case 31 may vary depending on the shape of the piping.

This piping kit 30, as shown in Figure 1, when installing the piping (21, 22, 23, 24) connecting the outdoor unit 20 and the heat exchange unit 17 inside the main body 10 It is connected to the pipes (21, 22, 23, 24). That is, the two discharge pipes 32b and 32c of the refrigerant supply pipe 32 and the two inflow pipes 33b and 33c of the refrigerant return pipe 33 are connected to the pipes 23 and 24 extending from the heat exchange unit 17 side. . The inlet pipe 32a of the coolant supply pipe 32 and the discharge pipe 33a of the coolant return pipe 33 are connected to pipes 21 and 22 extending from the outdoor unit 20 side. In this embodiment, one pipe kit 30 connects two heat exchangers 17a and 17b and one outdoor unit 20.

1 and 2, the piping kit 30 controls the operation of the air handling unit or coolant expansion devices 34a and 34b based on the sensing information of the temperature sensors 35a, 35b, 35c, and 35d. The control unit 40 for controlling the operation of the) is provided. The control unit 40 is composed of a pipe kit 30 and a set. The control unit 40 includes a control circuit unit (not shown) and a control box 41 for receiving the control circuit unit. The control box 41 may be fixed to the case 21 of each piping kit 30. The control circuit unit in the control box 41 may include a terminal block (not shown) for wiring connection and a plurality of relays (not shown) for power control. In addition, the control box 41 is installed in each of the plurality of wiring holes 42 through which wirings (not shown) pass, and each of the wiring holes 42 for fixing the wirings, and closes the wiring holes 42 to be waterproof. It includes a plurality of wiring fixing member 43 that can be.

The pipe kit 30 makes it easy to install them when installing pipes 21, 22, 23, 24 connecting between the outdoor unit 20 and the heat exchanger unit 17. The refrigerant expansion devices 34a and 34b, the plurality of temperature sensors 35a, 35b, 35c and 35d, and the filters 37a, 37b and 37c are connected to the refrigerant supply pipe 32 and the refrigerant return inside the piping kit 30. Since it is mounted on the pipe 33, it is not necessary to take time to install these parts when installing the device in the field. That is, when the pipes 21, 22, 23, 24 and the pipe kit 30 are connected, the connection between the outdoor unit 20 and the heat exchange unit 17 can be completed, and the installation of the parts accommodated in the pipe kit 30 is completed. Can also be completed. The refrigerant expansion devices 34a and 34b and the temperature sensors 35a, 35b, 35c and 35d are preset to match the capacities of the heat exchange unit 17 and the outdoor unit 20. It also prevents the installation of mismatched parts. Therefore, it is possible to prevent the problem that the performance of the device is degraded or the control of the system becomes unstable as in the prior art.

As shown in FIG. 1, the piping kit 30 increases or decreases the number of heat exchangers 17a, 17b, 17c, 17d, ... according to the air conditioning environment of the building. Can be reduced or reduced. That is, when the number of heat exchangers is added in the process of mounting the heat exchangers 17a, 17b, 17c, 17d, ... on the main body 10, the pipe kit 30 may be additionally installed to correspond thereto. . Of course, in this case it is also additionally equipped with a control unit 40 composed of each piping kit 30 and a set. As such, when the pipe kit 30 of the present invention is adopted, installation conditions such as pipes and heat exchangers can be easily changed according to the situation of the site, and thus, the site design can be easily coped with.

1 shows an air handling unit to which a piping kit for an air conditioner according to the present invention is applied.

Figure 2 is a perspective view showing the configuration of a piping kit for an air conditioning apparatus according to the present invention.

3 is a plan view showing the configuration of a piping kit for an air conditioning apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

10: main body, 11: first inlet,

12: first outlet, 15: first blower,

16: ventilator, 17: heat exchange unit,

18: second blower, 20: outdoor unit,

30: piping kit, 31: case,

32: refrigerant supply pipe, 33: refrigerant return pipe,

34a, 34b: refrigerant expansion device, 35a, 35b, 35c, 35d: temperature sensor,

37a, 37b, 37c: filter, 40: control unit.

Claims (18)

A case; At least one refrigerant supply pipe installed in the case and guiding the refrigerant from the outdoor unit to the indoor heat exchanger; At least one refrigerant return tube installed in the case and guiding the refrigerant from the indoor heat exchanger to the outdoor unit; And at least one refrigerant expansion device installed in the refrigerant supply pipe inside the case. The method of claim 1, The refrigerant supply pipe and the refrigerant return pipe is an air conditioner piping kit, characterized in that both ends of the case exposed to the outside of the casing for connection with the pipes to the outdoor unit or the indoor heat exchanger. The method of claim 2, The refrigerant supply pipe includes one inlet pipe connected to the outdoor unit side pipe, and a plurality of discharge pipes branched from the inlet pipe and connected to the indoor heat exchanger side pipes, The refrigerant expansion device is a piping kit for an air conditioning apparatus, characterized in that each installed in the plurality of discharge pipes. The method of claim 2, The refrigerant return pipe includes an exhaust pipe connected to the outdoor unit side pipe and a plurality of inlet pipes branched from the discharge pipe and connected to the pipes on the indoor heat exchanger side. The method according to any one of claims 1 to 4, And at least one temperature sensor installed in at least one of the refrigerant supply pipe and the refrigerant return pipe. The method of claim 5, And a control unit for controlling the operation of the air conditioner or controlling the operation of the refrigerant expansion device based on the sensed information of the temperature sensor. The method of claim 6, The control unit includes a control circuit and a control kit containing a control box for receiving the control circuit. The method of claim 7, wherein The control box includes a plurality of wiring holes through which wiring passes, and a plurality of wiring fixing members installed in the plurality of wiring holes for fixing the wiring and closing the wiring holes in a waterproof manner. Piping kit for the device. The method of claim 3, The refrigerant supply pipe is an air conditioner piping kit, characterized in that the filter is installed to filter foreign matter. A main body, a blower installed in the main body for blowing the indoor air, at least one heat exchanger installed in the main body for heat exchange of air, at least installed outside the main body and connected to the heat exchanger by a plurality of pipes One outdoor unit and at least one pipe kit detachably mounted to the plurality of pipes, The pipe kit is a case; At least one refrigerant supply pipe installed in the case and guiding the refrigerant from the outdoor unit to the indoor heat exchanger; At least one refrigerant return tube installed in the case and guiding the refrigerant from the indoor heat exchanger to the outdoor unit; Air handling unit, characterized in that it comprises at least one refrigerant expansion device installed in the refrigerant supply pipe inside the case. The method of claim 10, The refrigerant supply pipe and the refrigerant return pipe is an air handling unit, characterized in that both ends are exposed to the outside of the case for connection with the pipes to the outdoor unit or the indoor heat exchanger side. The method of claim 11, The refrigerant supply pipe includes one inlet pipe connected to the outdoor unit side pipe, and a plurality of discharge pipes branched from the inlet pipe and connected to the indoor heat exchanger side pipes, And the refrigerant expansion device is installed in the plurality of discharge pipes, respectively. The method of claim 11, And the refrigerant return pipe includes one discharge pipe connected to the outdoor unit side pipe, and a plurality of inlet pipes branched from the discharge pipe and connected to the indoor heat exchanger side pipes. The method according to any one of claims 10 to 13, Air handling unit further comprises at least one temperature sensor installed in at least one of the refrigerant supply pipe and the refrigerant return pipe. The method of claim 14, And a control unit for controlling the operation of the air conditioner or controlling the operation of the refrigerant expansion device based on the sensed information of the temperature sensor. The method of claim 15, The control unit comprises a control circuit portion, and a control box for receiving the control circuit portion air handling unit. The method of claim 16, The control box includes a plurality of wiring holes through which wiring passes, and a plurality of wiring fixing members installed in the plurality of wiring holes for fixing the wiring and closing the wiring holes in a watertight manner. unit. The method of claim 12, Air handling unit, characterized in that the coolant supply pipe is installed to filter foreign matter.

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