JP2006177566A - Heat pump device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump device superior in installability without affection of the suction and discharge of outside air. <P>SOLUTION: In this heat pump device wherein a heat pump 110 constituted by connecting a compressor 111, a high pressure-side heat exchanger 112, a decompression means 113 and a low pressure-side heat exchanger 114 is stored in a case 120 composed of a hexahedron, and the heat from the outside air is absorbed by the low pressure-side heat exchanger 114, and the external fluid is heated by heat radiation of the high pressure-side heat exchanger 112, a suction portion 121 and a discharge portion 122 for the outside air are respectively formed on adjacent two faces of six faces of the case 120, the low pressure-side heat exchanger 114 is installed in opposition to at least one of the suction portion 121 and the discharge portion 122, and the outside air is allowed to flow approximately at a right angle so that the outside air flow is directed from the suction portion 121 toward the discharge portion 122 by an air blower 116 using a centrifugal fan or a break-through fan. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat pump device in which a heat pump that heats an external fluid is housed in a case, and is effective when applied to, for example, a hot water supply device that heats hot water supply water to form hot water.

  As a conventional hot water supply device, for example, as shown in Patent Document 1, a device having a heat pump (a vapor compression refrigerator in Patent Document 1) is known as a heating means for heating hot water. As shown in FIG. 18, the heat pump includes a compressor 111, a high-pressure side heat exchanger (heat exchanger that radiates heat to heat hot water) 112, a decompression unit 113, and a low-pressure side heat exchanger (heat exchange that absorbs heat from outside air). 114) are sequentially connected in a ring shape, and are housed in a case 120 made of a metal hexahedron together with a compressor 111, a control device for the decompression means 113, etc., and a heat pump unit (patented) In the literature 1, an outdoor unit 110) is configured. The heat pump unit 110 is installed outdoors as an outdoor unit.

Here, the case 120 has a flat shape when viewed from above, and the low-pressure side heat exchanger 114 is formed in an L shape. And among the side surfaces (four surfaces) 1 to 4 of the case 120, the two adjacent side surfaces 1 and 2 (side surface 1 having a large area and side surface 2 having a small area) are connected to a low pressure side heat exchanger 114 (L-shaped). Are arranged so as to face each other, and outside air for heat exchange is sucked from these two side faces 1 and 2, and the outside air after heat exchange is taken out of the case 120 from the side face 3 opposite to the side face 1 having a large area. To be discharged.
JP 2004-85183 A

  However, since the three side surfaces 1 to 3 of the side surfaces (four surfaces) 1 to 4 of the case 120 are used for the intake and discharge of the outside air, in order to form an effective outside air flow, It will be restricted by the installation conditions for the wall part. That is, when any one of the three side surfaces 1 to 3 is installed facing a wall portion of a house (for example, a shaded portion in FIG. 18), it is necessary to provide a gap for inhaling outside air. It cannot be installed so as to come into contact with the gap, and the gap becomes a dead space. On the other hand, it is possible to install the side surface 4 that is not related to suction or discharge so as to come into contact with the wall portion of the house, but in this case, the case 120 is disposed so as to protrude from the wall portion. It will not be an installation that makes effective use of. The above contents are particularly problematic in a house where the installation space itself is limited, such as a house with a small site or an apartment house.

  In view of the above problems, an object of the present invention is to provide a heat pump device that is excellent in installability without being affected by the intake or discharge of outside air.

  In order to achieve the above object, the present invention employs the following technical means.

  In the first aspect of the present invention, a heat pump formed by sequentially connecting a compressor (111), a high pressure side heat exchanger (112), a pressure reducing means (113), and a low pressure side heat exchanger (114) in an annular shape. 110) is housed in a hexahedron case (120), absorbs heat from outside air in the low-pressure side heat exchanger (114), and heats the external fluid by heat radiation from the high-pressure side heat exchanger (112). In the heat pump device, an outside air suction part (121) and a discharge part (122) are respectively formed on one surface or two adjacent surfaces of the six surfaces of the case (120), and the low pressure side heat exchanger (114). Is arranged so as to face at least one of the suction part (121) or the discharge part (122), and the blower means (116) that allows the flow direction of the air to be changed, causes the outside air to flow from the suction part (121) to the low pressure side. Through exchanger (114), is characterized in that it has to flow to the discharge unit (122).

  As a result, at least three of the four side surfaces of the case (120) or two adjacent surfaces can be formed as surfaces that are not related to the intake and exhaust of outside air. For example, the heat pump device (100) can be arranged so as to be able to contact a wall of a house, and the arrangement efficiency can be improved without creating a dead space.

  In the invention described in claim 1, as in the invention described in claim 2, the suction part (121) and the discharge part (122) are respectively formed on two adjacent surfaces, and the blowing means (116) A blower (116) using a centrifugal fan or a cross-flow fan, and the blower (116) causes the flow of outside air from the suction part (121) to the low pressure side heat exchanger (114) to the discharge part (122). It is better to make it flow at almost right angle so that it goes.

  As a result, of the four side surfaces of the case (120), at least two adjacent surfaces can be formed as surfaces that are not related to the intake and exhaust of outside air, so that these two surfaces can be in contact with, for example, a wall of a house at the maximum. The heat pump device (100) can be arranged, and the arrangement efficiency can be improved without creating a dead space.

  Further, in the invention described in claim 1, as in the invention described in claim 3, the suction surface (121) and the discharge surface (122) are respectively formed on one surface, and the air blowing means (116) , A blower (116) using a centrifugal fan or a cross-flow fan, and by the blower (116), the flow of outside air passes from the suction part (121) through the low pressure side heat exchanger (114) to the discharge part (122). In this way, a U-turn flow may be used.

  As a result, at least three of the four side surfaces of the case (120) can be formed as surfaces that are not related to the intake and discharge of outside air, so that the maximum three surfaces can be brought into contact with, for example, a wall of a house. (100) can be arranged, and the arrangement efficiency can be improved without creating a dead space.

  The invention according to claim 4 is characterized in that at least one of the suction part (121) and the discharge part (122) is formed on the upper surface or the lower surface of the case (120).

  Thereby, in the four side surfaces of the case (120), the number of surfaces that are not related to the intake and discharge of the outside air can be increased, so that the arrangement efficiency of the heat pump device (120) can be further improved.

  The invention according to claim 5 is characterized in that a plurality of air blowing means (116) are provided.

  Thereby, each one ventilation means (116) can be reduced in size, the mounting property in a case (120) can be improved, and a total noise and driving power can be reduced.

  In the invention according to claim 6, the suction part (121) and the discharge part (122) are respectively formed on two adjacent surfaces, and the low-pressure side heat exchanger (114) is provided with the suction part (121) and the discharge part. It is characterized by being formed in an L-shape so as to face both of the parts (122).

  Thereby, the physique of a low-pressure side heat exchanger (114) can be increased easily, and heat absorption capability can be increased.

  As the heat pump device (100), the tank (130) for storing the external fluid heated by the high pressure side heat exchanger (112) is provided in the case (120) as in the invention described in claim 7. Can be.

  Thereby, it can be set as a compact heat pump apparatus (100).

  In the invention according to claim 8, of the side surfaces of the case (120), the one surface where the suction part (121) and the discharge part (122) are not formed, and the compressor (111) and the blowing means (116). A tank (130) is disposed between the tanks.

  Thereby, it is possible to block the noise generated from the compressor (111) and the air blowing means (116) from propagating to one surface side of the case (120) by the tank (130). That is, for example, when the heat pump device (100) is installed with one surface in contact with the wall of the house, noise generated from the compressor (111) and the air blowing means (116) is prevented from propagating into the house. it can.

  In the ninth aspect of the present invention, the tank (130) is formed with a concave portion (132) that is concave, and the compressor (111) and the air blowing means (116) are disposed in the concave portion (132). It is characterized by that.

  As a result, noise generated from the compressor (111) and the air blowing means (116) is blocked from the three sides by the recess (132) of the tank (130), so that the effect of suppressing noise propagation to the outside of the case (120) is improved. it can.

  The invention according to claim 10 is characterized in that at least one of the compressor (111) and the high pressure side heat exchanger (112) is in contact with the tank (130).

  Thereby, the heat of the compressor (111) or the high-pressure side heat exchanger (112) can be transmitted to the tank (130), and the heat loss (temperature decrease) of the external fluid stored in the tank (130) can be suppressed. When the high pressure side heat exchanger (112) is in contact with the tank (130), the refrigerant in the heat pump (110) is preheated by the external fluid in the tank (130). 110), the external fluid can be heated in a short time, and the storage of the external fluid in a low temperature state in the tank (130) can be suppressed.

  The invention according to claim 11 is characterized in that the tank (130) is arranged on the lower side in the case (120).

  Thereby, the external fluid is stored in the tank (130), so that the position of the center of gravity of the heat pump device (100) is on the lower side, and stable installation can be performed.

  In the invention described in claim 12, the tank (130) is formed in a vertically long shape, and the compressor (111), the high pressure side heat exchanger (112), the pressure reducing means (113), and the low pressure side heat exchanger (114). The air blowing means (116) is arranged in the vertical direction.

  As a result, the compressor (111), the high pressure side heat exchanger (112), the pressure reducing means (113), the low pressure side heat exchanger (114), and the air blowing means (116) are left in a vertically long space in the case (120). ) Can be arranged efficiently.

  In a thirteenth aspect of the present invention, as the decompression means (113), a nozzle section for decompressing and expanding the high-pressure refrigerant in the heat pump (110) isentropically, and a boosting section for converting the enthalpy reduced during the decompression expansion into pressure energy. It is characterized by using an ejector having the following.

  Thereby, the motive power of a compressor (111) can be reduced and the coefficient of performance of a heat pump apparatus (100) can be improved.

  The invention according to claim 14 is characterized in that the compressor (111) compresses and discharges the refrigerant in the heat pump (110) to a critical pressure or higher.

  Thereby, the refrigerant | coolant temperature in a heat pump (110) can be made higher, and the heating capability with respect to an external fluid can be increased.

  Further, as in the invention described in claim 15, the refrigerant in the heat pump (110) can be specifically carbon dioxide.

  Incidentally, the reference numerals in parentheses of each means described above are an example showing the correspondence with the specific means described in the embodiments described later.

(First embodiment)
The first embodiment of the present invention is a tank-integrated heat pump device (hot water supply device) 100 in which a heat pump 110, a tank 130, and the like are disposed in a case 120. Hereinafter, referring to FIGS. explain. 1 is a schematic diagram showing a schematic configuration of the heat pump apparatus 100, FIG. 2 is a plan view showing a mounting structure of the heat pump apparatus 100, (b) is a front view, (c) is a side view, and FIG. These are time charts showing an operation example of the heat pump device 100.

As shown in FIG. 1, the heat pump 110 includes a compressor 111, a radiator (corresponding to the high pressure side heat exchanger in the present invention) 112, an expansion valve (corresponding to the decompression means in the present invention) 113, an evaporator (in the present invention). The accumulator 115 is formed by sequentially connecting pipes in an annular manner, and carbon dioxide (CO ₂ ) is used as a refrigerant flowing inside.

  The compressor 111 is driven by a built-in electric motor (not shown), and compresses and discharges the gas-phase refrigerant sucked from the accumulator 115 to a critical pressure or higher. The compressor 111 (electric motor) is controlled by a control unit 160 described later.

The radiator 112 exchanges heat between the high-temperature refrigerant (hot gas) discharged from the compressor 111 and water (corresponding to the external fluid in the present invention) supplied from the tank 130 described later, that is, heat dissipation. Water is heated by action to obtain hot water (for example, a target temperature of 90 ° C.). The radiator 112 has a refrigerant passage through which a refrigerant flows and a water passage through which water flows, and is configured such that the flow direction of the refrigerant flowing through the refrigerant passage and the flow direction of the water flowing through the water passage face each other. . In addition, since the refrigerant (CO ₂ ) flowing through the radiator 112 is pressurized to a critical pressure or higher by the compressor 111, it does not condense even if the temperature is lowered by radiating heat to the water flowing through the radiator 112. .

  The expansion valve 113 is a decompression device that decompresses the refrigerant flowing out of the radiator 112 in an enthalpy manner according to the valve opening. Specifically, the expansion valve 113 performs a greater decompression by reducing the valve opening. In other words, the pressure is increased with respect to the high pressure side of the refrigerant by reducing the valve opening. The expansion valve 113 is configured such that the valve opening degree is electrically controlled by a control unit 160 described later.

  The evaporator 114 is a heat exchanger that absorbs heat from the outside air blown from the blower (corresponding to the blowing means in the present invention) 116 and evaporates the refrigerant decompressed by the expansion valve 113. Here, the blower 116 uses a centrifugal fan (a sirocco fan among sirocco fans, radial fans, turbo fans, and the like here), and is controlled by a control unit 160 described later. Yes.

  The accumulator 115 is a receiver that gas-liquid separates the refrigerant flowing out of the evaporator 114, causes only the gas-phase refrigerant to be sucked into the compressor 111, and stores excess refrigerant in the cycle.

  A pressure sensor 117 is provided between the radiator 112 and the expansion valve 113 so as to detect the high-pressure side refrigerant pressure of the radiator 112 in the heat pump 110. The pressure signal detected by the pressure sensor 117 is output to the control unit 160 described later.

  The tank 130 is a metal (for example, stainless steel) container (for example, capacity 200 L) having excellent corrosion resistance, and a heat insulating material (not shown) is arranged on the outer peripheral portion, and stores hot water in the interior to keep it warm for a long time. Be able to. The tank 130 is not directly subjected to water pressure by a water supply pipe (tap water pipe) 153, which will be described later, so that the pressure resistance of the tank 130 itself is not required and a flat rectangular parallelepiped is formed here.

  A plurality (five in this example) of water level thermistors 131 are arranged on the outer wall surface of the tank 130 at substantially equal intervals in the vertical direction, and temperature information at each water level of water or hot water filled in the tank 130 is provided. Is output to the control unit 160 described later. For example, in a tank 130 with a capacity of 200 L, temperature information at a water level in increments of 50 L is output, and the hot water heated up in the tank 130 and the water before boiling in the tank 130 are heated. The boundary surface can be detected in increments of 50L.

  Further, the tank 130 is provided with a heat pump side circulation circuit 140 and a heating circulation circuit 150.

  The heat pump side circulation circuit 140 is a circuit in which the water (hot water) in the tank 130 is discharged from the lower side by the pump 141 and returned to the upper side, and the internal water flows through the water passage of the radiator 112. ing. A temperature sensor 142 for detecting the temperature of the heated hot water is provided on the outlet side of the radiator 112 of the heat pump side circulation circuit 140, and the temperature signal detected by the temperature sensor 142 is output to the control unit 160 described later. It has come to be. The pump 141 is controlled by a control unit 160 described later.

  The heating circulation circuit 150 is a circuit in which hot water in the tank 130 is discharged from the upper side by the pump 151 and returned to the lower side, and a heat exchanger 152 is provided in the middle thereof. The pump 151 is controlled by a control unit 160 described later.

  The heat exchanger 152 exchanges heat between hot water flowing out of the tank 130 and flowing through the heating circuit 150 and hot water (tap water) flowing through the water supply pipe (tap water pipe) 153 (hot water supply). Hot water is heated) to be used by a user in a hot water supply section (shower, currant, bath, etc.). This heat exchanger 152 has a hot water passage through which hot water flows and a water passage through which hot water flows, and the flow direction of hot water flowing through the hot water passage and the flow direction of hot water flowing through the water passage are opposite to each other. Is configured to do. A temperature sensor 154 that detects the temperature of the heated hot water is provided on the outlet side of the heat exchanger 152 of the water supply pipe 153, and the detected temperature signal is output to the control unit 160 described later. ing.

  A control unit 160 serving as a control unit is a set temperature (temperature input from a remote controller (not shown), for example, 42 ° C.) signal set by a user, a pressure signal from the pressure sensor 117, a water level thermistor 131, a temperature sensor 142, Based on the temperature signal from 154, energization control is performed on the compressor 111 (substantially an electric motor as a drive source), the expansion valve 113, the blower 116, the pumps 141, 151, and the like.

  As shown in FIG. 2, each of the above devices has a foot 123 formed on the lower surface and is housed in a case 120 having a flat hexahedron as shown in FIG. 2A to form the heat pump device 100. ing.

  Here, the suction part 121 is formed on the two adjacent surfaces of the six surfaces of the case 120, specifically, on the two adjacent surfaces of the four side surfaces, on the upper side (upper side in the vertical direction) of the side surface having a small area. In addition, a discharge portion 122 is formed in a portion close to the suction portion 121 on the side surface having a large area. And the evaporator 114 is arrange | positioned so that the suction | inhalation part 121 may be opposed. Further, the suction side (circular side surface of the centrifugal fan) of the blower 116 is opposed to the core portion of the evaporator 114, and the discharge side (circumferential side of the centrifugal fan) of the blower 122 is directed to the discharge unit 122. I have to.

  A compressor 111, a radiator 112, an expansion valve 113, and an accumulator 115 are disposed below the evaporator 114 and the blower 116, and a tank 130 is disposed in most of the remaining space. 151, the control unit 160, and the like are arranged as the functional component 101 in the remaining space.

  Next, the operation of the heat pump apparatus (hot water supply apparatus) 100 configured as described above will be described with reference to FIG. In this heat pump apparatus 100, first, hot water is boiled into the tank 130 in the late-night time zone (between 23:00 on the current day and 7 o'clock on the next day) when the power rate is low. That is, the controller 160 grasps the amount of remaining hot water in the tank 130 (the remaining amount of hot water) from the temperature signal of the water level thermistor 131, and calculates the amount of boiling up by subtracting the remaining amount of hot water from the total capacity of the tank. The heat pump 110 and the heat pump side circulation circuit 140 are operated so that the inside of the tank 130 is filled with hot water.

  Specifically, the compressor 111 is driven by the control unit 160, the refrigerant in the heat pump 110 is circulated, and the blower 116 is driven to supply outside air to the evaporator 114 (heat absorption from outside air). Is done). The operating rotational speed of the pump 141 of the heat pump side circulation circuit 140 is controlled so that the temperature of the water obtained by the temperature sensor 142 becomes a target temperature (for example, 90 ° C.) by the heat radiation from the radiator 112. Thereby, the water in the tank 130 flows out from the lower side, is heated by the radiator 112, is returned to the upper side of the tank 112, and the tank 130 is filled with hot water.

  At this time, depending on the temperature on the water side (for example, the temperature of water obtained by the water temperature thermistor 131 on the lower side of the tank 130), the refrigerant side (heat radiation) The expansion valve 113 is opened so that the temperature of the refrigerant on the side of the vessel 112 becomes a predetermined temperature (the refrigerant temperature correlates with the pressure), that is, the high-pressure side refrigerant pressure obtained by the pressure sensor 117 becomes the predetermined pressure. The degree is adjusted (midnight power operation).

  And if a user uses a hot water supply part from 7:00 to 23:00 except a midnight time zone, the temperature of the hot water supply water obtained with the temperature sensor 154 by the control part 160 will be set temperature (for example, 42 degreeC) which a user sets. Thus, the operating rotational speed of the pump 151 of the heating circuit 150 is controlled.

  Here, when the amount of hot water in the tank 130 obtained by the water level thermistor 131 becomes equal to or less than a predetermined amount (for example, 150 L) as the user uses the hot water supply unit, the heat pump 110 and the heat pump side circulation circuit are similar to the above. 140 is operated, and hot water is heated up in the tank 130 (run-out prevention operation).

  As described above, in the present embodiment, when the heat pump 110 is operated, the blower 116 having a centrifugal fan (sirocco fan) causes the flow of outside air from the suction part 121 of the case 120 to the discharge part 122 through the evaporator 114. It becomes a substantially right angle flow.

  Accordingly, at least two adjacent surfaces of the four side surfaces of the case 120 can be formed as surfaces that are not related to the intake and discharge of the outside air, so that these two surfaces can be in contact with, for example, the wall of the house (FIG. 2). (A) The heat pump device 100 can be arranged, and the arrangement efficiency can be improved without creating a dead space.

  And since the tank 130 is integrally provided in the case 120, the compact heat pump apparatus 100 can be obtained.

  In addition, since the refrigerant in the heat pump 110 is carbon dioxide and this refrigerant is compressed and discharged to a critical pressure or higher by the compressor 111, the refrigerant temperature in the heat pump 110 can be increased, and the inside of the tank 130 can be increased. Heating capacity for water can be increased.

  In contrast to the first embodiment, as shown in FIG. 4, the evaporator 114 may be disposed so as to face the discharge portion 122 side. Further, as shown in FIG. 5, the arrangement relationship between the evaporator 114 and the blower 116 and other devices (the compressor 111, the radiator 112, the expansion valve 113, the accumulator 115, the heat exchanger 152, etc.) is reversed upside down. Also good. Furthermore, other devices (compressor 111, radiator 112, expansion valve 113, accumulator 115, heat exchanger 152, etc.) may be arranged in the flow of outside air by the blower 116.

(Second Embodiment)
A second embodiment of the present invention is shown in FIG. 6 (second embodiment 1), FIG. 7 (second embodiment 2), and FIG. 8 (second embodiment 3). In the second embodiment, either the suction part 121 or the discharge part 122 is provided on the upper surface or the lower surface of the case 120 as compared with the first embodiment.

  When the suction part 121 or the discharge part 122 is provided on the lower surface of the case 120, a gap is formed between the foot part 123 of the case 120 and the garden or the veranda so that a flow of outside air is formed. ing.

  As a result, on the four side surfaces of the case 120, the number of surfaces that are not related to the intake and discharge of the outside air can be increased to three surfaces with respect to the two surfaces of the first embodiment, so that the arrangement efficiency of the heat pump device 120 can be increased. This can be further improved.

(Third embodiment)
A third embodiment of the present invention is shown in FIG. In the third embodiment, a plurality of blowers 116 are provided with respect to the first embodiment.

  Here, two blowers 116 are arranged in the vertical direction, and the discharge portions 122 are provided on the upper surface and the lower surface of the case 120, respectively. The suction part 121 is formed over one entire side surface (the right side surface in FIG. 9) of the case 120, and the evaporator 114 is disposed so as to face the suction part 121.

  In this third embodiment, the outside air flows in from the suction part 121, passes through the evaporator 114, and then flows out from the upper and lower discharge parts 122 by the upper and lower blowers 116. .

  As a result, the size of each blower 116 can be reduced to improve the mountability in the case 120, and the total noise and driving power can be reduced.

  In addition, although the two discharge parts 122 were provided here and the flow of two external air was formed, it is not restricted to this, The some air blower 116 between the suction part 121 and the discharge part 122 each formed one each. May be provided.

(Fourth embodiment)
A fourth embodiment of the present invention is shown in FIG. 10 (fourth embodiment 1) and FIG. 11 (fourth embodiment 2). 4th Embodiment changes the shape of the evaporator 114, and the arrangement | positioning conditions in the case 120 with respect to the said 1st Embodiment.

  Here, the evaporator 114 is formed in an L shape, and the L-shaped core portions are arranged so as to face the suction portion 121 and the discharge portion 122. 10 shows an example in which the suction part 121 and the discharge part 122 are provided on two side surfaces adjacent to the case 120. FIG. 11 shows the suction part 121 and the discharge part 122 provided on the side surface and the lower surface of the case 120, respectively. This is an example.

  As a result, in the evaporator 114 on the downstream side of the outside air flow, the outside air whose temperature has decreased due to heat exchange in the upstream evaporator 114 circulates, so the heat exchange efficiency is reduced, but the physique of the evaporator 114 is reduced. It can be easily increased to increase the endothermic capacity.

(Fifth embodiment)
A fifth embodiment of the present invention is shown in FIG. 5th Embodiment changes the arrangement position of the tank 130 from a viewpoint of noise reduction with respect to the said 1st Embodiment.

  Here, the tank 130 is arranged between one side of the case 120 where the suction part 121 and the discharge part 122 are not formed and the compressor 111 and the blower 116. That is, the flatness of the tank 130 is increased, and the tank 130 is arranged to face the side surface (side surface having a large area) of the case 120 where the suction portion 121 and the discharge portion 122 are not formed. The compressor 111, the evaporator 114, the blower 116, and other devices (the radiator 112, the expansion valve 113, the accumulator 115, the heat exchanger 152, etc.) are arranged in the left and right direction in the remaining space in the case 120. is doing. The heat pump device 100 formed in this way is installed so that the side surface of the case 120 on the side facing the tank 130 is in contact with the wall of the house.

  Thereby, the noise generated from the compressor 111 and the blower 116 can be blocked by the tank 130 from being propagated into the house, and the heat pump apparatus 100 with low noise can be obtained.

  The compressor 111 (including other devices), the evaporator 114, and the blower 116 may be arranged in the vertical direction as shown in FIG. Further, the compressor 111 and other devices may be arranged in the flow of outside air by the blower 116.

(Sixth embodiment)
A sixth embodiment of the present invention is shown in FIG. The sixth embodiment is intended to further reduce noise compared to the fifth embodiment.

  Here, a concave recess 132 is provided on the side surface of the tank 130, and the compressor 111, the evaporator 114, the blower 116, and other devices (the radiator 112, the expansion valve 113, the accumulator 115, the heat exchange are provided in the recess 132. Etc.).

  Thereby, since the noise which generate | occur | produces from the compressor 111 and the air blower 116 is interrupted from three directions by the recessed part 132 of a tank (130), the noise propagation suppression effect to a house can be improved.

(Seventh embodiment)
FIG. 15 shows a seventh embodiment of the present invention. The seventh embodiment takes into consideration the suppression of heat loss of hot water in the tank 130 or the suppression of cold water storage when the heat pump 110 is started, and the stability after installation, compared to the first embodiment.

  Here, the shape of the tank 130 is set to a shape corresponding to a space when the case 120 is substantially divided into two in the vertical direction, and the tank 130 is disposed below the case 120. On the upper side of the tank 130, the compressor 111, the evaporator 114, the blower 116, and other devices (the radiator 112, the expansion valve 113, the accumulator 115, the heat exchanger 152, etc.) are arranged in the left-right direction. ing. Therefore, the compressor 111 with self-heating during operation and the radiator 112 with heat dissipation are in contact with the upper surface of the tank 130.

  Thereby, the heat of the compressor 111 and the radiator 112 can be transmitted to the tank 130, and the heat loss (temperature decrease) of the hot water stored in the tank 130 can be suppressed. In addition, since the refrigerant in the radiator 112 (refrigerant in the heat pump 110) is preheated by the hot water in the tank 130, the water can be heated in a short time when the heat pump 110 is started. It is possible to suppress the storage of water in a low temperature state (inhibition of cold water storage).

  Further, when the heat pump device 100 is used, water or hot water is stored in the tank 130, so that the center of gravity of the heat pump device 100 is on the lower side, and stable installation can be performed (improvement of earthquake resistance).

  In addition, in the installation of the heat pump device 100, the position of the tank 130 may not be the lower side as long as it is attached in consideration of earthquake resistance (bolt fixing or the like). Conversely, if the tank 130 is arranged on the upper side in the case 120 and various devices are arranged on the lower side, the center of gravity of the heat pump device 100 is lowered during transportation and construction before installation (the tank 130 is empty). Stable work is possible.

(Eighth embodiment)
FIG. 16 shows an eighth embodiment of the present invention. 8th Embodiment changes the shape of the tank 130, and arrangement | positioning of various apparatuses with respect to the said 1st Embodiment.

  Here, the tank 130 is formed so as to be vertically long in the space in the case 120, and various devices (the compressor 111, the radiator 112, the expansion valve 113, the evaporator 114, the accumulator 115, the blower) are left in the space left and right. 116, heat exchanger 152, functional component 101, etc.) are arranged in the vertical direction.

  Thereby, various devices can be efficiently arranged in a space that remains vertically long in the case 120.

(Ninth embodiment)
FIG. 17 shows a ninth embodiment of the invention. 9th Embodiment changes the specification of the air blower 116, and the formation position of the suction part 121 and the discharge part 122 with respect to the said 1st Embodiment.

  Here, the blower 116 uses a cross-flow fan. The suction part 121 and the discharge part 122 are formed on one of six surfaces (side surfaces with a small area) of the case 120 so as to be arranged in the vertical direction, and the evaporator 114 is opposed to the suction surface 121. It is arranged to do. Further, the blower 116 (the blades of the cross-flow fan) is disposed so as to face the core portion of the evaporator 114.

  In the heat pump device 100, when the heat pump 110 is operated, the blower 116 forms a U-turn flow such that the outside air flows in from the suction unit 121, passes through the evaporator 114, and flows out from the discharge unit 122. .

  As a result, at least three of the four side surfaces of the case 120 can be formed as surfaces that are not related to the intake and discharge of outside air. Therefore, the heat pump device 100 can be configured to be capable of contacting, for example, a wall portion of a house at the maximum. Arrangement efficiency can be improved without creating a dead space.

  The blower 116 may use the centrifugal fan described in the first to eighth embodiments instead of the cross-flow fan. In this case, for example, the U-turn flow may be formed by smoothly bending the casing of the centrifugal fan toward the discharge portion 122 side.

(Other embodiments)
In the said 1st Embodiment-8th Embodiment, although demonstrated that the centrifugal fan was used for the air blower 116, it may replace with this and may be used as the air blower using a cross-flow fan.

  Moreover, in the said 1st Embodiment-9th Embodiment, although the air blower 116 using a centrifugal fan or a once-through fan was formed as a ventilation means, the perpendicular flow and U-turn flow of external air were formed, but it does not restrict to this. Instead, the flow direction of the outside air may be changed by a smoothly bent wind direction plate (corresponding to the blowing means that can change the blowing flow direction in the present invention).

  The tank 130 may be a separate tank type heat pump apparatus installed outside the case 120.

  Further, although the expansion valve 113 is used as the pressure reducing means in the heat pump 110, it may be replaced with an ejector. The ejector mixes the nozzle part that decompresses and expands the high-pressure side refrigerant that has flowed out of the radiator 112, the refrigerant injected from the nozzle part, and the gas-phase refrigerant that is sucked from the evaporator 114, thereby increasing the pressure of the refrigerant. It has a pressure | voltage rise part, Thereby, the motive power of the compressor 111 can be reduced and the coefficient of performance of the heat pump apparatus 100 can be improved.

  In addition, the hot water supplied to the hot water supply unit is generated by heating the hot water in the heat exchanger 152 with the hot water in the tank 130, but the hot water in the tank 130 is mixed with the hot water. Or the like.

  Moreover, although the heat pump 110 comprised what is called a supercritical heat pump cycle which pressurizes a refrigerant | coolant more than a critical pressure with the compressor 111, it is not limited to a supercritical heat pump cycle. Moreover, although the refrigerant | coolant was the carbon dioxide, it is not limited to this. Other refrigerants such as so-called Freon may be used.

The schematic diagram which shows schematic structure of a heat pump apparatus. (A) which shows the mounting structure of the heat pump apparatus in 1st Embodiment is a top view, (b) is a front view, (c) is a side view. It is a time chart which shows the operation example of a heat pump apparatus. It is a top view which shows the mounting structure of the heat pump apparatus in the modification 1 of 1st Embodiment. (A) which shows the mounting structure of the heat pump apparatus in the modification 2 of 1st Embodiment is a top view, (b) is a front view, (c) is a side view. It is a front view which shows the mounting structure of the heat pump apparatus in 2nd Embodiment. It is a front view which shows the mounting structure of the heat pump apparatus in 2nd Embodiment. It is a front view which shows the mounting structure of the heat pump apparatus in 2nd Embodiment 3. FIG. It is a front view which shows the mounting structure of the heat pump apparatus in 3rd Embodiment. It is a top view which shows the mounting structure of the heat pump apparatus in 4th Embodiment. It is a front view which shows the mounting structure of the heat pump apparatus in 4th Embodiment. (A) which shows the mounting structure of the heat pump apparatus in 5th Embodiment is a top view, (b) is a front view, (c) is a side view. (A) which shows the mounting structure of the heat pump apparatus in the modification 1 of 5th Embodiment is a top view, (b) is a front view, (c) is a side view. (A) which shows the mounting structure of the heat pump apparatus in 6th Embodiment is a top view, (b) is a front view, (c) is a side view. (A) which shows the mounting structure of the heat pump apparatus in 7th Embodiment is a top view, (b) is a front view, (c) is a side view. (A) which shows the mounting structure of the heat pump apparatus in 8th Embodiment is a top view, (b) is a front view, (c) is a side view. It is a front view which shows the mounting structure of the heat pump apparatus in 9th Embodiment. It is a top view which shows the mounting structure of the heat pump apparatus in a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Heat pump apparatus 110 Heat pump 111 Compressor 112 Radiator (high-pressure side heat exchanger)
113 Expander (pressure reduction means)
114 Evaporator (Low pressure side heat exchanger)
116 Blower (Blower unit)
120 Case 121 Suction part 122 Discharge part 130 Tank 132 Recessed part

Claims (15)

A case in which a heat pump (110) formed by sequentially connecting a compressor (111), a high-pressure side heat exchanger (112), a pressure reducing means (113), and a low-pressure side heat exchanger (114) in an annular shape forms a hexahedron. Contained in (120),
In the heat pump device that absorbs heat from outside air in the low pressure side heat exchanger (114) and heats the external fluid by heat radiation of the high pressure side heat exchanger (112),
Of the six surfaces of the case (120), the outside air suction portion (121) and the discharge portion (122) are formed on one surface or two adjacent surfaces, respectively.
The low pressure side heat exchanger (114) is arranged to face at least one of the suction part (121) or the discharge part (122);
The outside air flows from the suction part (121) through the low pressure side heat exchanger (114) to the discharge part (122) by the air blowing means (116) that makes the air flow direction variable. A heat pump device. The suction part (121) and the discharge part (122) are respectively formed on the two adjacent surfaces,
The air blowing means (116) is a blower (116) using a centrifugal fan or a cross-flow fan,
By the blower (116), the flow of the outside air is made to flow substantially at right angles so as to pass from the suction part (121) through the low-pressure side heat exchanger (114) toward the discharge part (122). The heat pump device according to claim 1. The suction surface (121) and the discharge surface (122) are respectively formed on the one surface,
The air blowing means (116) is a blower (116) using a centrifugal fan or a cross-flow fan,
The blower (116) is adapted to make a U-turn flow so that the flow of the outside air flows from the suction part (121) through the low pressure side heat exchanger (114) toward the discharge part (122). The heat pump device according to claim 1.   The at least one of the said suction part (121) and the said discharge part (122) was formed in the upper surface or lower surface of the said case (120), The Claim 1 characterized by the above-mentioned. Heat pump device.   The heat pump device according to any one of claims 1 to 4, wherein a plurality of the air blowing means (116) are provided. The suction part (121) and the discharge part (122) are respectively formed on the two adjacent surfaces,
The low-pressure side heat exchanger (114) is formed in an L shape so as to face both the suction part (121) and the discharge part (122). The heat pump device according to any one of claims 4 and 5.   The tank (130) for storing an external fluid heated by the high pressure side heat exchanger (112) is provided in the case (120). The heat pump device according to one.   Between the side surface of the case (120) where the suction part (121) and the discharge part (122) are not formed, and between the compressor (111) and the blowing means (116), 8. The heat pump device according to claim 7, wherein a tank (130) is arranged. The tank (130) is formed with a recess (132) that is concave.
The heat pump device according to claim 7 or 8, wherein the compressor (111) and the blowing means (116) are disposed in the recess (132).   The at least one of the compressor (111) and the high-pressure side heat exchanger (112) is in contact with the tank (130), according to any one of claims 7 to 9. Heat pump device.   The heat pump apparatus according to any one of claims 7 to 10, wherein the tank (130) is disposed on a lower side in the case (120). The tank (130) is formed vertically long,
The compressor (111), the high pressure side heat exchanger (112), the pressure reducing means (113), the low pressure side heat exchanger (114), and the air blowing means (116) are arranged in the vertical direction. The heat pump device according to claim 7, wherein the heat pump device is a heat pump device.   As the decompression means (113), an ejector having a nozzle part for decompressing and expanding the high-pressure refrigerant in the heat pump (110) isentropically and a boosting part for converting the enthalpy reduced during the decompression expansion into pressure energy is used. The vapor compression type refrigerator according to any one of claims 1 to 12, wherein the refrigerator is a vapor compression refrigerator.   The heat pump device according to any one of claims 1 to 13, wherein the compressor (111) compresses and discharges the refrigerant in the heat pump (110) to a critical pressure or higher.   The heat pump apparatus according to claim 14, wherein the refrigerant is carbon dioxide.

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