JP6099500B2 - Outdoor unit and heat pump system using the outdoor unit - Google Patents

Description

  The present invention relates to, for example, a multi-type outdoor unit having a valve to which pipes from a water heater and an indoor unit are connected, and a heat pump system using the outdoor unit.

Conventionally, an outdoor unit in a heat pump system includes a first support member and a second support that can withstand the nut loosening due to the pressure width of the refrigerant flowing in the pipe, the nut tightening force in accordance with the loosening, and the nut tightening. Considering the strength of the member, an air conditioning valve is attached to the first support member side, and a hot water supply valve is attached to the second support member side fixed to the first support member. Moreover, in order to suppress the deformation of the first support member and the second support member due to the connection work, the pipe is connected to the valve by tightening the nut by a double spanner work (for example, Patent Documents). 1).
The double spanner operation refers to an operation in which two spanners are used, a valve is fixed with one spanner, and a pipe connection nut is turned horizontally with the other spanner.

JP 2012-52737 A (page 4-5)

  In the technique described in Patent Document 1, as described above, the first support member and the second support member are easily deformed. Therefore, the mounting position of the air conditioning valve is on the first support member side, and the hot water supply valve is mounted. The positions are determined according to the second support member side and the tightening force of the nut. For this reason, there are restrictions on the layout of the machine room and the routing of the piping by determining the mounting position of the valve. In addition, since the pipe connection work is performed by a double spanner work, the connection work is troublesome.

  The present invention has been made to solve the above-mentioned problems, and does not fix the valve with a wrench, but the valve and the pipe by a single spanner operation in which the nut of the pipe connection is turned and tightened with only one spanner. It is an object of the present invention to provide an outdoor unit having a first support member and a second support member that are not deformed even when tightened, and a heat pump system using the outdoor unit.

An outdoor unit according to the present invention is provided in a machine case having a machine room and a blower room partitioned by a partition plate provided inside, and in the machine room. When the unit case is viewed from the front, one end is in the machine room. Is formed of a horizontally long plate member having two steps in order from one end side so that the other end portion is located on the heel side in the machine room. The first support member is provided with two semicircular holes each having an opening at the lower end on the left and right sides of the second stage surface positioned at the first stage, and is attached to the second stage surface of the first support member. Two valves each having a branch pipe inserted into each of the two holes, and a mounting surface fixed to the back surface of the surface located at the second stage of the first support member and extending vertically downward from the first support member And is attached to the first support member on its mounting surface. For two valves, and a second support member two valve shifted in the lateral direction is mounted, the second support member, facing the hole in one end of the two holes in the semicircular portion Is a center plane portion, a vertically long hole having the same semicircular shape as the hole on one end portion side is provided at a position opposite to the hole on one end portion side of the center plane portion, and two valves attached to the mounting surface Recesses that are recessed from both sides of the central plane part to the back side of the machine room with each axis as the center are provided, and are further engaged and fixed to the corners formed in the second stage of the first support member. An engaging piece is provided, and the branch pipe of one of the two valves attached to the first support member is inserted into the vertically long hole.

  According to the present invention, the first support member is formed of a horizontally long plate member having two steps in order from one end side, and the second support member fixed to the first support member includes the back side of the machine room. Each of the first and second support members is provided with a recessed portion which is recessed, and an engagement piece fixed to a corner portion formed in the second stage of the first support member is further provided. For this reason, even if the connection to the valve attached to the first support member is performed by a single spanner operation, the deformation of the first support member can be suppressed, and the valve is attached to the second support member by the single spanner operation. Even when tightening is performed by connecting a pipe to the valve, since the recessed portions are provided on the back side of the machine room, deformation and shearing of the second support member can be prevented.

  As described above, since the deformation of the first support member and the second support member can be suppressed even in the single spanner operation, the mounting position of each valve can be arbitrarily determined without restriction, and the connection operation is facilitated.

The figure which shows schematic structure of the heat pump system which concerns on embodiment. The perspective view of the outdoor unit shown in FIG. FIG. 3 is an enlarged perspective view showing an air conditioning valve and a hot water supply valve provided in the machine room of FIG. 2. The perspective view which expands and shows the 1st supporting member and 2nd supporting member which are shown in FIG. The perspective view which shows a 1st supporting member. The perspective view which shows a 2nd supporting member. The perspective view which shows the state which connected piping to the valve | bulb for air conditioning and the valve | bulb for hot water supply. The figure which shows the direction of the force added to the air conditioning valve and the hot water supply valve at the time of tightening the connecting pipe of piping to the air conditioning valve and the hot water supply valve.

FIG. 1 is a diagram showing a schematic configuration of a heat pump system according to an embodiment.
The heat pump system includes a multi-type outdoor unit 100, a water heater 200, an indoor unit 300 capable of switching between cooling and heating, a gas pipe 42 and a liquid pipe connecting the outdoor unit 100 and the indoor unit 300. 43, and a gas pipe 40 and a liquid pipe 41 that connect the outdoor unit 100 and the water heater 200.

  In this heat pump system, the refrigerant heated by the outdoor unit 100 is sent to the water heater 200 via the gas pipe 40 (solid line arrow). The water heater 200 makes hot water by exchanging heat between the refrigerant from the outdoor unit 100 and water. And the refrigerant | coolant heat-exchanged with water returns to the outdoor unit 100 via the piping 41 for liquids (solid line arrow). The refrigerant heated in the outdoor unit 100 is sent to the indoor unit 300 via the gas pipe 42 (solid line arrow). The indoor unit 300 performs a heating operation by exchanging heat between the refrigerant and the indoor air. And the refrigerant | coolant heat-exchanged with room air returns to the outdoor unit 100 via the piping 43 for liquids (solid line arrow). Further, the refrigerant cooled by the outdoor unit 100 is sent to the indoor unit 300 via the liquid pipe 43 (broken arrows). The indoor unit 300 performs a cooling operation by exchanging heat between the refrigerant and the indoor air. And the refrigerant | coolant heat-exchanged with room air returns to the outdoor unit 100 via the gas piping 42 (dashed arrow).

2 is a perspective view of the outdoor unit shown in FIG. 1, and FIG. 3 is an enlarged perspective view showing an air conditioning valve and a hot water supply valve provided in the machine room of FIG.
The outdoor unit 100 is configured by a unit case 1 having an outer box shape. The unit case 1 is partitioned into a machine room 3 and a blower room 4 by a partition plate 2. The middle of the front and side of the machine room 3 of the unit case 1 is covered with a front panel. The front panel is detachably attached to the unit case 1 so that each component in the machine room 3 can be easily replaced.

  The machine room 3 stores various components such as the compressor 5, the first hot water supply valve 7, the first air conditioning valve 9, the second hot water supply valve 8, the second air conditioning valve 10, and the blower room 4. Contains a blower, a heat exchanger installed on the suction side of the blower, and the like. Further, a hole 6 for drawing the gas pipes 40 and 42 and the liquid pipes 41 and 43 into the machine chamber 3 is provided in the lower corner of the machine case 3 of the unit case 1.

  For example, the first hot water supply valve 7 and the first air conditioning valve 9 are fixed to the first support member 20 with screws, and the second hot water supply valve 8 and the second air conditioning valve 10 are connected to the second support member 30. It is fixed with screws. The first hot water supply valve 7 is connected to a gas pipe 40, and the first air conditioning valve 9 is connected to a gas pipe 42. The second hot water supply valve 8 is connected to the liquid pipe 41, and the second air conditioning valve 10 is connected to the liquid pipe 43.

  The second hot water supply valve 8 and the second air conditioning valve 10 are, for example, shifted to the left side with respect to the first hot water supply valve 7 and the first air conditioning valve 9 by the second support member 30. This is to secure a work space necessary for removing the compressor 5 by service replacement, and to secure a spanner work space when connecting the pipe and the valve. That is, by arranging the valves in a staggered manner, the spanner and the valves do not contact each other when connecting the valves and the pipes.

4 is an enlarged perspective view showing the first support member and the second support member shown in FIG. 3, FIG. 5 is a perspective view showing the first support member, and FIG. 6 is a perspective view showing the second support member.
The first support member 20 has a first fixing portion 21 fixed to the partition plate 2 with a screw at one end, and a second fixing portion 22 fixed to the frame 1a with a screw at the other end. A second support member 30 fixed by spot welding is provided on the back surface of the valve mounting surface 24.

  As shown in FIG. 5, the first support member 20 has two steps in order from the first fixing portion 21 side so that the first fixing portion 21 is located on the front side and the second fixing portion 22 is located on the heel side. It is formed of a horizontally long sheet metal. The first stage surface 23 and the bent portions 23a and 23b on both sides of the surface 23 are provided with a plurality of rod-shaped projecting portions 26 projecting toward the front side. The second step surface that is deeper than the first step surface 23 has substantially semicircular holes 27, 28 that are open at the lower end, and two screw holes 24 a that are formed on both sides of each of the holes 27, 28. The valve mounting surface 24 has 24b. An engagement piece 35 of the second support member 30 is fixed to a bent portion 25 (corner portion) formed on the first fixing portion 21 side of the valve mounting surface 24. The branch pipe of the first hot water supply valve 7 is inserted into the hole 27, and the branch pipe of the first air conditioning valve 9 is inserted into the hole 28.

  The valve mounting surface 24 of the first support member 20 is located at the back of the machine room 3 by the bent portions 23 b and 25. That is, even if the first hot water supply valve 7 and the first air conditioning valve 9 are attached to the valve attachment surface 24 and the compressor 5 is disposed in front of the first hot water supply valve 7, the front panel is attached to the unit case 1. In addition, the first support member 20 has a bent portion 25 and a plurality of rod-shaped protruding portions 26, so that deformation is suppressed and the strength is increased even when pipe connection to each valve is performed by a single spanner operation.

  The second support member 30 is made of sheet metal, and as shown in FIG. 6, two dent portions 31 extending in the vertical direction, a vertically long central plane portion 32 formed between the dent portions 31, and one dent. A vertically long left flat surface portion 33 formed by bending outward from the portion 31, a vertically long right flat surface portion 34 formed by bending outward from the other recessed portion 31, and a front side from the left flat surface portion 33. And an engagement piece 35 formed by being bent into a bent shape.

  The central plane portion 32 is provided with a vertically long hole 36 whose upper portion has the same shape as the semicircular hole 27 described above. Upper portions of the central plane portion 32, the left plane portion 33, and the right plane portion 34 in the second support member 30 are used as a fixed surface 37 that is fixed to the back surface of the first support member 20, and the center plane portion 32, the left plane portion 33, and The lower part of the right plane part 34 is used as a mounting surface 38 for the second hot water supply valve 8 and the second air conditioning valve 10.

  On both sides of the hole 36 of the central plane portion 32, screw holes 32a facing the screw holes 24a provided on the valve mounting surface 24 of the first support member 20 are provided. The right flat surface portion 34 is provided with a screw hole 34a facing the screw hole 24b on one side provided in the valve mounting surface 24. In addition, a screw hole 39a for attaching the second hot water supply valve 8 is provided in the attachment surface 38 of the central flat portion 32 and the left flat portion 33 sandwiching one recess 31. A screw hole 39b for mounting the second air conditioning valve 10 is provided on the mounting surface 38 of the central plane portion 32 and the right plane portion 34 sandwiching the other recess 31. The engagement piece 35 provided on the left flat surface portion 33 engages with the side surface of the bent portion 25 of the first support member 20 and is fixed by the above-described spot welding. The second support member 30 is prevented from being deformed by the two recessed portions 31 and the engagement pieces 35 described above, and the strength is increased even when pipe connection to each valve is performed by a single spanner operation.

FIG. 7 is a perspective view showing a state in which piping is connected to the air conditioning valve and the hot water supply valve.
As described above, the first hot water supply valve 7 and the first air conditioning valve 9 are fixed to the first support member 20 with screws, and the second support member 30 is provided with the second hot water supply valve 8 and the second hot water supply valve 9. The air conditioning valve 10 is fixed by screws. The first hot water supply valve 7 and the first air conditioning valve 9 are connected by rotating the nuts 40a, 42a of the gas pipes 40, 42 drawn into the machine chamber 3 through the holes 6 with a spanner in the horizontal direction. . Further, the second hot water supply valve 8 and the second air conditioning valve 10 are connected by rotating the nuts 41a and 43a of the liquid pipes 41 and 43 drawn into the machine chamber 3 through the holes 6 with a spanner in the horizontal direction. Is done. This connection work is a single spanner work.

FIG. 8 is a diagram illustrating the direction of force applied to the air conditioning valve and the hot water supply valve when the connecting pipe of the piping is tightened to the air conditioning valve and the hot water supply valve.
The arrow A shown in the figure indicates that when the gas pipes 40 and 42 are connected to the first hot water supply valve 7 and the first air conditioning valve 9 and tightened, the first hot water supply valve 7 and the first air conditioning valve 9. The direction of the force applied to the first hot-water supply valve 7 and the first air-conditioning valve 9 around each axis B is indicated by an arrow C between the second hot-water supply valve 8 and the second air-conditioning valve 10. When the liquid pipes 41 and 43 are connected and tightened, the second hot water supply valve 8 and the second air conditioning valve 10 are centered on the axis D of each of the second hot water supply valve 8 and the second air conditioning valve 10. The direction of the force applied to.

  As described above, according to the embodiment, since the first support member 20 is provided with the bent portion 25 and the plurality of rod-shaped protrusions 26, the first hot water supply valve 7 and the first air conditioning valve 9 are provided. Further, deformation of the first support member 20 that occurs when the gas pipes 40 and 42 are connected and tightened can be suppressed. Further, even when the nuts 40a and 42a are tightened by a single spanner operation, the bending of the bent portion 25 and the plurality of rod-shaped protrusions 26 can suppress the deformation of the plate-shaped first support member 20.

  Further, since the second support member 30 is provided with two recessed portions 31 and further provided with an engagement piece 35 fixed to the side surface of the bent portion 25 of the first support member 20, the second hot water supply The second support member 30 is not deformed or sheared with respect to the tightening of the liquid pipes 41 and 43 of the valve 8 and the second air conditioning valve 10. Further, even when the nuts 41a and 43a are tightened by the single spanner operation, the plate-shaped second support member 30 is deformed by the two recessed portions 31 and the engagement piece 35 fixed to the side surface of the bent portion 25. It can be suppressed.

  Thus, since the deformation of the first support member and the second support member can be suppressed even in the single spanner operation, the mounting position of each valve can be arbitrarily determined without being restricted. In addition, since the four valves described above can be attached to either the first support member 20 or the second support member 30 due to the increase in strength of the second support member 30, the layout in the machine room 3 and the routing of piping can be reduced. Constraints are improved.

  In addition, since the first support member 20 and the second support member 30 have the above-described configuration, the first support member 20 has the same configuration as the conventional product, so that there is no increase in manufacturing cost due to a decrease in yield, and the second support member 20 The member 30 can have strength without deformation due to tightening of the nuts 41a and 43a.

  In the embodiment, the first hot water supply valve 7 is provided on the left side of the first support member 20, the first air conditioning valve 9 is provided on the right side of the first support member 20, and the left side of the second support member 30 is provided. Although the second hot water supply valve 8 and the second air conditioning valve 10 are provided on the right side of the second support member 30, the first support member 20 and the second support member 30 are tightened with nuts 40a, 41a, 42a, 43a. On the other hand, the four valves described above may be attached to either the first support member 20 or the second support member 30 because the shape does not deform.

  1 Unit case, 1a frame, 2 partition plate, 3 machine room, 4 fan room, 5 compressor, 6 holes, 7 1st hot water supply valve (for gas), 8 2nd hot water supply valve (for liquid), 9 1 valve for air conditioning (for gas), 10 second valve for air conditioning (for liquid), 20 first support member, 21 first fixing portion, 22 second fixing portion, 23 first stage surface, 23a, 23b bent portion , 24 Valve mounting surface, 24a, 24b Screw hole, 25 Bent part, 26 Protruding part, 27, 28 hole, 30 Second support member, 31 Recessed part, 32 Center plane part, 32a Screw hole, 33 Left plane part, 34 Right plane part, 34a Screw hole, 35 Engagement piece, 36 hole, 37 Fixing surface, 38 Mounting surface, 39a, 39b Screw hole, 40, 42 Gas piping, 40a, 42a Nut, 41, 43 Liquid piping, 41a 43a Nut, 100 outdoor unit, 200 water heater, 300 indoor unit, A, C Rotating direction of nut, B, D axis.

Claims (3)

A unit case having a machine room and a fan room partitioned by a partition plate provided inside;
2 in order from the one end side so that the one end is located on the near side in the machine room and the other end is located on the heel side in the machine room. Two semi-circular holes each having an opening at the lower end are formed on the left and right sides of the second step surface of the plate member from the first step of the plate member. A provided first support member;
Two valves attached to a surface located in the second stage of the first support member, each having a branch pipe inserted into the two holes;
The first support member is fixed to the rear surface of the second stage of the first support member, and has a mounting surface at a lower portion extending vertically downward from the first support member, and the first support member is provided on the mounting surface. A second support member to which the two valves attached to the two valves are attached to the two valves attached to the left and right directions,
The second support member has a semi-circular shape of the two holes facing a hole on the one end side as a central plane portion, and is positioned at a position facing the hole on the one end side of the central plane portion. A longitudinally long hole having the same semicircular shape as the hole on the one end side is provided, and the back side of the machine room from both sides of the central plane part around each shaft center of the two valves attached to the mounting surface A concave portion is provided, and an engagement piece is provided that is engaged with and fixed to a corner portion formed in the second stage of the first support member,
An outdoor unit, wherein a branch pipe of one of two valves attached to the first support member is inserted into the vertically long hole. Vertical said second support member, in which two of said recessed portion extending in the vertical direction, the vertical of the central planar portion which is formed between the recess viewed portion, which is formed by bending outwardly from one recess of the left flat portion, an elongated right flat portion that is bent outwardly from the other recessed portion is formed by bending the front side from the left flat portion, the second stage of the first support member The outdoor unit according to claim 1, wherein the outdoor unit is configured by an engagement piece that is engaged with and fixed to a corner portion formed on the wall. A water heater,
An indoor unit,
The outdoor unit according to claim 1 or 2,
The water heater is connected to any two of the four valves provided in the outdoor unit via a pipe,
The heat pump system, wherein the indoor unit is connected to the remaining two valves provided in the outdoor unit via a pipe.

Images