WO2011114656A1

WO2011114656A1 - Refrigerator

Info

Publication number: WO2011114656A1
Application number: PCT/JP2011/001349
Authority: WO
Inventors: 西村　晃一
Original assignee: パナソニック株式会社
Priority date: 2010-03-18
Filing date: 2011-03-08
Publication date: 2011-09-22
Also published as: CN102753918A; EP2522936B1; JPWO2011114656A1; CN102753918B; EP2522936A4; EP2522936A1

Abstract

A refrigerator comprising, at the lower rear part thereof, a machine compartment for containing the compressor and the condenser, wherein the refrigerator is energy efficient because of the improved energy efficiency of the cooling cycle achieved without a reduction in the ability of the cooling cycle. A refrigerator comprises, at the lower rear part thereof: a compressor (101); a condenser (124); a machine compartment (110) which contains the compressor (101) and an air blower (141) for cooling the compressor (101) and the condenser (124); a base plate (160) which affixes the condenser (124), the air blower (141), and the compressor (101) in such a manner that the condenser (124), the air blower (141), and the compressor (101) are adjacent to each other in the left-right direction; a lateral rib (161) which is in contact with the base plate (160) and which divides the machine compartment (110) into front and rear spaces; a front face suction opening (166) which is disposed on either the left side or the right side of the lateral rib and which causes air to flow in the front-rear direction; a front face blowing opening (167) which is disposed on the other side of the lateral rib and which causes air to flow in the front-rear direction; a vertical rib (162) which is in contact with the base plate (160) and which, on the front side of the lateral rib (161), divides the machine compartment (110) into left and right spaces; a bottom face suction opening (163) which is open on the front side of the lateral rib (161) and which is located on the condenser (124) side; and a bottom face blowing opening (164) which is located on the compressor (101) side.

Description

refrigerator

The present invention relates to a refrigerator, and more particularly to a refrigerator that includes a machine room at the lower back and cools the machine room with a blower.

Also, the present invention relates to a structure for insulating the inside of the refrigerator from the outside air in a refrigerator in which a freezer compartment and a refrigerator compartment are arranged on the left and right.

In the case of a conventional refrigerator, the compressor and condenser constituting the cooling cycle unit are arranged side by side in the left and right machine room at the lower back of the refrigerator. In addition, since the compressor and the condenser become high temperature, the compressor and the condenser are cooled by a blower provided in the machine room in order to improve the efficiency of the cooling cycle (see, for example, Patent Document 1).

Since such a conventional refrigerator is usually installed with the back surface of the refrigerator in close contact with a wall or the like, the air inlet and outlet of the blower are mainly provided on the bottom of the refrigerator, and the air passage created by the blower Increasing the cross-sectional area of the air channel has been a problem.

Also, conventionally, there is a vertically long rectangular parallelepiped refrigerator, in which a middle part in the width direction is divided by a wall, and different types of storage rooms are provided on the left and right. Such a refrigerator is called, for example, a side-by-side (SBS) refrigerator. In the SBS type refrigerator, for example, one storage room is a refrigeration room and the other storage room is a freezing room.

Conventionally, in various types of refrigerators including SBS refrigerators, there is a cooling cycle in which refrigerant discharged from the compressor passes through a condenser, a throttle valve, and a cooler (also referred to as an evaporator) and returns to the compressor again. It is configured. The interior is cooled by the cold air generated in such a cooling cycle.

Refrigerators are generally placed at room temperature, so it is necessary to insulate the interior from outside air. Therefore, it is common that the box, door, and the like constituting the refrigerator main body include a heat insulating material.

In recent years, there are refrigerators that employ vacuum insulation as part of the insulation. The vacuum heat insulating material is a heat insulating material in which a core material having a porous structure is covered with a laminate film and then the inside is reduced in pressure and sealed.

When a vacuum heat insulating material is used in a portion that requires heat insulation, the contribution of gas thermal conductivity becomes almost zero, so that excellent heat insulation performance can be obtained.

The technique about a refrigerator provided with such a vacuum heat insulating material is also disclosed (for example, refer patent document 2).

JP 2003-42636 A JP 2003-222466 A

However, the space in the machine room is desired to be as small as possible in order to increase the refrigerator's internal volume. On the other hand, if the air inlet and outlet are made larger in the front-rear direction of the refrigerator in order to ensure the cooling performance in the machine room, the heat insulation wall on the front of the machine room at the back of the refrigerator is inclined at least diagonally. There is a possibility that the volume of the refrigerator becomes small and the usability is deteriorated.

Also, if you try to enlarge the inlet and outlet in the left-right direction of the refrigerator, the inlet and outlet will open up to the part closer to the fan than the compressor and condenser, and the wind from the fan will be sucked into the fan. There was a risk of short circuiting without cooling the compressor and condenser, flowing through the mouth and outlet.

Therefore, the inventors of the present invention have found an air passage configuration in which the area of the inlet and outlet is increased to cool the entire interior of the machine room without reducing the internal volume of the refrigerator as much as possible.

The present invention has been made on the basis of the above findings, and in a refrigerator having a machine room for storing a compressor and a condenser at the lower rear, increasing the energy efficiency of the cooling cycle while suppressing a decrease in the capacity of the cooling cycle. The first purpose is to provide a refrigerator that can contribute to energy saving.

In recent years, it is desired that the refrigerator has a large capacity, but the installation area is about the same as the conventional one. Therefore, in recent refrigerators, for example, the wall thickness of the box forming the refrigerator tends to be thin, and the height dimension tends to be long. This also applies to the SBS refrigerator described above.

Here, that the dimension in the height direction of the SBS type refrigerator becomes longer means that the dimension in the height direction of the refrigerator compartment and the freezer compartment becomes longer. For this reason, the total area of the walls that block off each of the refrigerator compartment and the freezer compartment and the outside air also increases, and the thickness tends to be reduced.

Under such circumstances, the SBS type refrigerator maintains the freezer temperature at, for example, the freezing temperature (about −20 ° C.) and the refrigerator compartment temperature at, for example, about 6 ° C. like other types of refrigerators. There is a need.

In other words, the SBS type refrigerator requires a unique technique for efficiently maintaining each of the vertically long and large capacity freezing room and the refrigerating room adjacent to each other in the temperature range suitable for each purpose. .

However, the above-described conventional technique is a technique for heat insulation between storage rooms arranged one above the other, and cannot be said to be a technique suitable for an SBS type refrigerator.

In view of the above-described conventional problems, the present invention is a refrigerator that includes a refrigerator compartment and a freezer compartment that are arranged adjacent to each other in the left-right direction, and efficiently cools the storage compartment while increasing its capacity. Is the second purpose.

In order to achieve the above object, a refrigerator according to the present invention includes a compressor, a condenser connected to the compressor, and an evaporator connected to the condenser and evaporating a refrigerant. The compressor, the condenser, the compressor and the condenser, a machine room for storing a blower for cooling the condenser and the compressor in this order, the condenser, the blower and the compressor A base plate that is adjacent to and fixed in the left-right direction, abuts against the base plate, partitions the machine room in the front-rear direction, a lateral rib provided with a front suction port on the left and right, and a front blow-out port, and a base plate A vertical rib that abuts and partitions the machine chamber in the left-right direction on the front side of the horizontal rib, a bottom suction port on the condenser side that opens in the front direction of the horizontal rib of the base plate, and the compressor With a bottom outlet on the side It is set to.

The front suction port has a width from the refrigerator side wall surface to the vicinity of the center in the left-right direction of the condenser.

As a result, even if the area of the bottom suction port and the bottom outlet is increased, the cooling air from the blower does not short circuit, the compressor and the condenser can be cooled, and the cooling air from the blower is short-circuited. Without making a circuit, the front suction area can be increased, and the energy efficiency of the cooling cycle can be improved.

Furthermore, it is preferable that the front outlet port has a width from the refrigerator side wall surface to the vicinity of the center in the left-right direction of the compressor.

This makes it possible to increase the front outlet area without causing a short circuit for the cooling air from the blower and further improve the energy efficiency of the cooling cycle.

In order to solve the above conventional problems, the refrigerator of the present invention has a first box that is long in the vertical direction and has an opening on the front surface to form a refrigerator compartment, and a freezer compartment that has an opening on the front surface. A refrigerator comprising: a second box that is long in the vertical direction; and the outer box that covers the first box and the second box that are disposed adjacent to each other in the left-right direction, the first box and the first box A first vacuum heat insulating material and a second vacuum heat insulating material are provided between the back surface of the two box bodies and the outer box.

This configuration can improve the heat insulation performance of the refrigerator compartment and the freezer compartment, and can reduce the thickness of the back wall of the refrigerator compartment and the freezer compartment. That is, the length of the refrigerator compartment and the freezer compartment in the depth direction can be increased, and thereby the capacity of the freezer compartment can be increased.

The refrigerator of the present invention is further connected to the compressor, the first condenser that is connected to the compressor and directly exchanges heat with air, the first condenser, and the first box and the first condenser. A second condenser disposed between the two boxes and the outer box and outside the first vacuum heat insulating material and the second vacuum heat insulating material and exchanging heat with air through the outer box; It is good also as a structure provided with the evaporator connected with a 2 condenser and evaporating a refrigerant | coolant.

This configuration can increase the heat dissipation of the cooling cycle and improve the energy efficiency of the cooling cycle.

In the refrigerator of the present invention, the shape of the second condenser is M-shaped, and heat is exchanged with air through the outer box also in the gap between the first vacuum heat insulating material and the second vacuum heat insulating material. It is good also as a structure.

With this configuration, the heat dissipation of the cooling cycle can be further increased, and the energy efficiency of the cooling cycle can be improved.

Further, the refrigerator of the present invention may be configured such that the width of the second vacuum heat insulating material is at least longer than the width of the freezer compartment.

With this configuration, the entire back surface of the freezer compartment having a larger temperature difference from the outside air can be covered with the first vacuum heat insulating material, and the heat insulating performance can be improved, and it can be affected by the heat of the second condenser. Therefore, the heat entering the freezer can be reduced, and the energy efficiency of the entire refrigerator can be improved.

The refrigerator of the present invention further includes a machine room that houses the compressor, the first condenser, and a cooling fan that cools the compressor and the condenser at a lower back portion, and the opening of the machine room It is good also as a structure provided with the cover which obstruct | occluded the part and was provided with the suction inlet and the blower outlet.

With this configuration, even in a configuration in which the first condenser is forcibly air-cooled with a cooling fan, the heat dissipation of the cooling cycle can be further increased, and the energy efficiency of the cooling cycle can be improved.

According to the present invention, it is possible to provide a refrigerator that can contribute to energy saving while maintaining and improving the capacity of the refrigerator.

Further, the present invention can provide a refrigerator that includes a refrigerator compartment and a freezer compartment that are arranged adjacent to each other in the left-right direction, and that efficiently cools the storage compartment while increasing its capacity. .

FIG. 1 is a perspective view showing the appearance of the refrigerator. FIG. 2 is a perspective view showing an appearance of the refrigerator in which the third door and the fourth door are opened. FIG. 3 is a perspective view showing an appearance of the refrigerator in which the first door and the second door are opened. FIG. 4 is a perspective view showing an appearance of the refrigerator in which the first door and the second door are omitted. FIG. 5 is a diagram schematically showing the cooling cycle unit. FIG. 6 is a perspective view schematically showing the components of the cooling cycle unit in a state attached to the refrigerator. FIG. 7 is a perspective view showing the lower back of the refrigerator from the back of the refrigerator. FIG. 8 is a cross-sectional view showing the lower back of the refrigerator from above the refrigerator. FIG. 9 is a cross-sectional view showing the lower back of the refrigerator from the side of the refrigerator. FIG. 10 is a diagram illustrating an opening state of the front suction port and the front outlet. FIG. 11 is a perspective view showing an appearance of the refrigerator in the second embodiment. FIG. 12 is a perspective view showing an appearance of the refrigerator according to the embodiment in which the first door and the second door are opened. FIG. 13 is a perspective view showing the appearance of the refrigerator according to the embodiment in which the first door and the second door are omitted. FIG. 14 is a schematic diagram showing the arrangement position of the vacuum heat insulating material in the refrigerator of the embodiment. FIG. 15 is a perspective view schematically showing components of the cooling cycle unit in the embodiment attached to the refrigerator. FIG. 16 is a schematic diagram illustrating a positional relationship among the first box, the second box, the outer box, the second condenser, the first vacuum heat insulating material, and the second vacuum heat insulating material of the refrigerator in the embodiment. FIG. 17 is a perspective view schematically showing the components of the cooling cycle unit in Embodiment 3 attached to the refrigerator.

Next, an embodiment of a refrigerator according to the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective view showing the appearance of the refrigerator.

FIG. 2 is a perspective view showing the appearance of the refrigerator with the third door and the fourth door opened.

Refrigerator 100 is a device that refrigerates or stores stored items stored inward, and includes box body 150, first door 111, second door 121, third door 112, and through-hole. 113 and a fourth door 122. The refrigerator 100 is a rectangular box having the longest height among the height, width, and depth.

The first door 111 is a door that opens and closes the opening on the right side toward the box body 150. In the case of the present embodiment, the first door 111 is hinged to the box body 150 by a hinge (not shown) so as to rotate about a rotation axis extending in the vertical direction in front of the right wall of the box body 150. It is attached. The first door 111 has a rectangular shape that is long in the vertical direction, and is arranged from the upper part to the lower part of the refrigerator 100, and the rotation shaft passes through the right end edge of the first door 111.

The second door 121 is a door that opens and closes the opening on the left side toward the box body 150. In the case of the present embodiment, the second door 121 is attached to the box body 150 by a hinge (not shown) so as to rotate about a rotation axis extending in the vertical direction in front of the left wall of the box body 150. It is attached. The second door 121 has a rectangular shape that is long in the vertical direction, and is arranged from the upper part to the lower part of the refrigerator 100, and the rotation shaft passes through the left end edge of the second door 121.

The through hole 113 is a hole that penetrates the first door 111 in the thickness direction. The through-hole 113 is used to take out stored items stored behind the first door 111 without opening the first door 111, and to insert the stored items for storage behind the first door 111. It is a hole.

The third door 112 is a door that closes the through hole 113 so as to be freely opened and closed. In the case of the present embodiment, the third door 112 is attached to the first door 111 by a hinge (not shown) so as to rotate about a rotation axis extending in the left-right direction at the lower end edge of the through hole 113. ing. Further, the third door 112 is substantially square when viewed from the front (the corners are rounded), and the rotation shaft passes through the lower edge of the third door 112.

The fourth door 122 is a door that is connected to the water supply and covers the supply port 123 of the water cooling device 114 that cools the tap water supplied to the inside of the refrigerator 100 by the cooling cycle unit 110 that the refrigerator 100 includes.

FIG. 3 is a perspective view showing the appearance of the refrigerator with the first door and the second door opened.

FIG. 4 is a perspective view showing the appearance of the refrigerator in which the first door and the second door are omitted.

Note that FIG. 3 also shows a stored item A stored in the refrigerator 100.

As shown in these drawings, the refrigerator 100 includes a first box 151, a second box 152, and an outer box 156.

The first box body 151 is a box body having an opening on the front surface and having a long heat insulating performance in the vertical direction forming a refrigerator compartment. In the case of the present embodiment, the first box 151 is disposed on the right side of the refrigerator 100 over the entire vertical direction of the refrigerator 100. Note that the refrigerator compartment is a room for storing stored items such as vegetables while maintaining a room temperature that is lower than the temperature outside the refrigerator 100 and higher than the temperature at which water freezes.

The second box 152 is a box that has an opening on the front surface and has a long heat insulating performance in the vertical direction that forms a freezer compartment. In the case of the present embodiment, the second box 152 is disposed on the left side of the refrigerator over the entire vertical direction of the refrigerator 100. Note that the freezer room is a room that maintains a room temperature lower than the temperature of the refrigerator compartment and stores stored items such as frozen food.

The outer box 156 is a metal plate that covers the first box 151 and the second box 152 that are arranged adjacent to each other in the left-right direction.

Here, the box body 150 in the present embodiment is manufactured as follows. That is, the inner box 157 in which the refrigerator compartment and the freezer compartment are separated by the partition wall 153 is manufactured by integral molding with resin. An outer box is arranged outside the inner box 157 so as to cover the inner box 157 at a predetermined interval from the inner box 157. A gap that communicates with the gap between the outer box 156 and the inner box 157 is also provided inside the partition wall 153. A gap provided between the outer box 156 and the inner box 157 or a gap between the partition walls 153 is filled with a heat insulating material such as hard urethane foam. The box body 150 is manufactured as described above.

Therefore, in the present embodiment, the walls adjacent to the first box 151 and the second box 152 are inseparably integrated, and the first box 151 and the second box 152 define the partition wall 153. It is intended to be shared as a wall.

Next, the cooling cycle unit provided in the refrigerator 100 and other elements will be described.

FIG. 5 is a diagram schematically showing the cooling cycle unit.

FIG. 6 is a perspective view schematically showing components of the cooling cycle unit attached to the refrigerator.

FIG. 7 is a perspective view showing the lower back of the refrigerator from the back of the refrigerator.

FIG. 8 is a cross-sectional view showing the lower back of the refrigerator from above the refrigerator.

FIG. 9 is a cross-sectional view showing the lower back of the refrigerator from the side of the refrigerator.

The cooling cycle unit 110 has a function of forcibly transferring heat from one space to the other space by releasing heat by the condenser 102 and absorbing heat by the evaporator 103. 103 is arranged at a position to cool the inside of the refrigerator 100 and the condenser 102 is arranged outside the refrigerator 100, so that the inside of the refrigerator 100 can be cooled. As shown in these drawings, the cooling cycle unit employed by the refrigerator 100 is a device including a compressor 101 (Compressor), a condenser 102 (Condenser), and an evaporator 103 (Evaporator), and a refrigerant path. A cooling cycle is realized by connecting the devices in a ring shape with the main pipe 104 and circulating the refrigerant. In the case of the present embodiment, the refrigerator 100 further includes a bypass pipe 105, and the machine room 120 includes a switching valve 106, a valve 107, an evaporating dish 140, and a blower 141.

The compressor 101 is a device that compresses a gaseous refrigerant flowing in the main pipe 104 and increases the pressure of the refrigerant. The compressor 101 is disposed inside a machine room 120 that exists on the lower back side of the refrigerator 100. The compressor 101 is attached to the machine room 120 via the insulator 115, and is attached in a state in which the vibration of the compressor 101 is not easily transmitted to the refrigerator 100.

The condenser 102 is a device that radiates the heat of the gaseous refrigerant whose pressure has been increased to the atmosphere to cool the refrigerant, thereby converting the refrigerant into a liquid refrigerant having a high pressure. In the case of this embodiment, the condenser 102 includes a first condenser 124, a second condenser 125, and a third condenser 126.

The first condenser 124 is a condenser that directly exchanges heat with air. The 1st condenser 124 is arrange | positioned under the 1st box 151 which is a refrigerator compartment, and is arrange | positioned inside the machine room 120 which exists in the back lower part of the refrigerator 100 in the state exposed to air.

The second condenser 125 is disposed in a meandering state between the outer side wall of the first box 151 and the outer box 156, and is a condenser that exchanges heat with air through the metal outer box 156. . In addition, since there is a heat insulating material between the second condenser 125 and the inner side of the first box 151, the heat generated from the second condenser 125 hardly affects the inner side of the first box 151. It has become a thing. Further, since the inside of the first box 151 is a refrigerating room having a relatively high temperature, the thermal gradient between the second condenser 125 and the inside of the first box 151 is low, and heat is not easily transmitted. Yes.

The third condenser 126 is a condenser disposed at the periphery of the opening of the second box 152, and functions to cool the refrigerant and raise the temperature of the periphery of the opening of the second box 152 to prevent condensation. I also have.

When the condenser 102 is configured as described above, even when the ability of the first condenser 124 exposed to the atmosphere is reduced due to accumulation of dust or the like, the ability of the second condenser 125 as the condenser 102 is reduced. Therefore, the capacity of the cooling cycle unit 110 can be maintained over a long period of time without requiring maintenance.

Moreover, since the dew condensation of the opening part of a freezer compartment can be prevented, the fall of the sealing performance of the 2nd door 121 by frost formation can be prevented, and the energy efficiency of the refrigerator 100 can be improved or maintained. It becomes possible.

The evaporator 103 is a device that evaporates the refrigerant in the interior and absorbs the heat of the surrounding air. In the case of the present embodiment, the evaporator 103 includes a first evaporator 131 and a second evaporator 132 connected in series by the main pipe 104.

The first evaporator 131 is an evaporator connected in series with the third condenser 126 and provided on the back of the first box 151, and plays a role of cooling the inside of the first box 151. Since the first evaporator 131 cools the refrigerator compartment, the first evaporator 131 is smaller than the second evaporator 132.

The second evaporator 132 is an evaporator connected in series with the first evaporator 131 and provided on the back of the second box 152, and plays a role of cooling the inside of the second box 152. In addition, since the 2nd evaporator 132 cools a freezer compartment, it is larger than the 1st evaporator 131. FIG.

In the case of the present embodiment, a fin-and-tube heat exchanger is used for both the first evaporator 131 and the second evaporator 132, but the present invention is not limited to this, and corrugated fins and Any heat exchanger such as a heat exchanger that employs a flat tube can be applied.

As described above, the first evaporator 131 for cooling the first box 151 (refrigeration room) and the second evaporator 132 for cooling the second box 152 (freezer room) are separated. By providing, it becomes possible to perform cooling suitable for each set temperature zone.

In particular, when a vertically long freezer compartment as in the present embodiment is provided, it is necessary to provide an evaporator having sufficient cooling capacity in order to reduce the temperature difference in the vertical direction of the freezer compartment. However, if such an evaporator is in the back of the refrigerator compartment, the refrigerator compartment may be excessively cooled, and it is necessary to sufficiently insulate the refrigerator compartment from the evaporator. In this case, the capacity of the refrigerator compartment is pressed by the heat insulating material. Therefore, as in the present invention, the first evaporator 131 suitable for cooling the refrigerator compartment is provided at the back of the first box 151 (refrigerator compartment), and the freezer compartment is provided at the back of the second box 152 (freezer compartment). By providing the second evaporator 132 suitable for uniform cooling, the capacity of the refrigerator compartment can be increased.

The blower 141 is a device that can generate an air flow, and in the case of the present embodiment, an axial fan is employed. Further, the blower 141 is disposed upright in the machine room 120 and between the first condenser 124 and the compressor 101. The blower 141 is arranged in a direction that can create a flow of air from the first condenser 124 toward the compressor 101.

As a result, air flows from the first condenser 124 to the compressor 101, that is, from the low temperature side to the high temperature side, so that the compressor 101 and the first condenser 124 can be efficiently cooled and compressed. Since the bearing of the blower 141 is not exposed to the high-temperature air after the cooling of the blower 101, the reliability of the blower 141 can be improved.

As shown in FIGS. 8 and 9, the machine room 120 is a space provided behind the refrigerator 100, and the first condenser 124, the blower 141, and the compressor 101 are arranged in the order of description. Rear space and a front space partitioned by the lateral ribs 161.

In the case of this embodiment, the rear space has a rectangular parallelepiped (substantially cubic) shape, and the front space has a triangular prism shape extending in the left-right direction. The machine room 120 is a space formed by raising the bottom surface of the box body 150, and includes a wall surface formed on the bottom surface of the box body 150, a base plate 160 provided on the bottom surface, and a cover 165 provided on the back surface. It is composed of enclosed space. Furthermore, the front space of the space partitioned in the front-rear direction by the horizontal ribs 161 is partitioned left and right by the vertical ribs 162 arranged in front of the horizontal ribs 161.

Further, the lateral rib 161 is shorter than the width of the refrigerator 100, and a front suction port 166 is provided on the side of the lateral direction of the lateral rib 161 and on the first condenser 124 side. The front blowout port 167 is provided on the side of the left and right direction and on the compressor 101 side.

The base plate 160 corresponding to the front side of the lateral rib 161 is provided with a bottom suction port 163 and a bottom outlet 164. In the case of the present embodiment, the bottom suction port 163 and the bottom outlet 164 are formed by a plurality of slits provided in the base plate 160, and the first condenser 124 side partitioned by the vertical ribs 162 is the bottom suction port 163. Thus, the compressor 101 side is a bottom outlet 164.

The switching valve 106 is a three-way valve that selects whether to supply the refrigerant from the third condenser 126 to the first evaporator 131 or to supply the refrigerant from the third condenser 126 directly to the second evaporator 132.

The valve 107 is a valve that is connected to the water supply and selects between supplying the tap water to the refrigerator 100 and shutting off the tap water.

The valve 107 is a device that constitutes the water cooling device 114. Here, the water cooling device 114 is a device connected to the water pipe 116, and the supply port 123 supplies the tap water cooled by the first evaporator 131, or water is supplied to an automatic ice maker (not shown). It is a device for supplying.

The bypass pipe 105 is a pipe that directly connects the third condenser 126 and the second evaporator 132 via the switching valve 106. Here, the direct connection means that the refrigerant is not introduced into the second evaporator 132 via the first evaporator 131, but instead bypasses the first evaporator 131 from the switching valve 106 and directly enters the second evaporator 132. Indicates that

Although the refrigerant | coolant employ | adopted for the cooling cycle unit 110 of the refrigerator 100 is not specifically limited, For example, a hydrocarbon type refrigerant | coolant can be illustrated.

Here, the hydrocarbon-based refrigerant is, for example, propane or isobutane. These are preferable because they have very little influence on global warming compared to hydrochlorofluorocarbons and hydrofluorocarbons.

As described above, by providing the bypass pipe 105 and the switching valve 106, it is possible to select introduction of the refrigerant into the first evaporator 131 while maintaining introduction of the refrigerant into the second evaporator 132. Become. Thereby, even when the second evaporator 132 is continuously operated for a long time so that temperature unevenness does not occur in the second box body 152 (freezer compartment) that is long in the vertical direction, the first box body 151 (refrigerator room). It is possible to perform control suitable for the first evaporator 131.

In addition, since the first evaporator 131 and the second evaporator 132 can be arranged in the left-right direction, the length of the bypass path, that is, the bypass pipe 105 can be shortened, and only the second evaporator 132 has a refrigerant. It is possible to increase the cooling efficiency of the second evaporator 132 when introducing the.

By adopting the refrigerator 100 having the above configuration, the overall energy efficiency can be increased, and it is possible to contribute to energy saving.

Moreover, since the wind from the blower 141 can increase the bottom suction port 163 and the bottom outlet 164, the air volume can be increased. Further, since the air passage in the machine room 120 is U-shaped by the lateral rib 161, the air sucked from the bottom surface suction port 163 passes through the front suction port provided on the side of the lateral rib 161. The first condenser 124 is cooled and the air blown out from the blower 141 is blown out from the bottom face outlet 164 via the front outlet provided on the side of the lateral rib 161 after cooling the compressor 101. It will be. Therefore, the cooling efficiency of the first condenser 124 and the compressor 101 can be improved, and the cooling efficiency of the cooling cycle unit 110 can be increased.

According to the refrigerator 100 described above, the cooling cycle unit 110 is configured such that the compressor 101 is disposed below the second box 152 forming the freezer compartment, and the first condensation is performed below the first box 151 forming the refrigerator compartment. The second condenser 125 is disposed on the outer side wall of the first box 151. Therefore, since the piping connecting them can be shortened, the energy efficiency of the cooling cycle unit 110 can be improved. Further, since the piping is straight even when the refrigerator 100 is assembled, it can be easily assembled.

Moreover, since the height of the compressor 101 is lower than the first condenser 124 arranged in the machine room 120, the second box 152 and the compressor 101 can be connected without sacrificing the volume of the second box 152. It is possible to expand the space sufficiently. Therefore, it is possible to suppress the influence of the heat generated from the compressor 101 on the second box 152. Furthermore, since there is a space between the second box 152 and the compressor 101, the evaporating dish 140 can be disposed in the space. Thereby, it becomes possible to further suppress the influence of the heat of the compressor 101.

Further, the wind from the blower 141 can enlarge the bottom suction port 163 and the bottom outlet 164 without causing the first condenser 124 and the compressor 101 to be short-circuited. Cooling efficiency can be increased.

FIG. 10 is a diagram showing in detail the opening states of the front suction port 166 and the front outlet 167.

As shown in the figure, the lateral rib 161 has a length from the vicinity of the center of the first condenser 124 in the left-right direction to the vicinity of the center of the compressor 101 in the left-right direction. On the outer side of the lateral rib 161 in the left-right direction, the first condenser 124 side is a front suction port 166 and the compressor 101 side is a front blowing port. Therefore, the front suction port 166 is open with a width from the refrigerator side wall surface, that is, the inner wall surface of the machine room 120 to the vicinity of the center of the condenser 124 in the left-right direction. Further, the front outlet 167 opens with a width from the refrigerator side wall surface, that is, the inner wall surface of the machine room 120 to the vicinity of the center in the left-right direction of the compressor 101.

As described above, the bottom suction port 163 and the bottom outlet 164 of the wind by the blower 141 are enlarged, and the front suction port 166 and the front outlet 167 are opened to the vicinity of the condenser 124 and the center of the compressor 101. Then, the wind from the blower 141 is blown directly from the bottom suction port 163 to the first condenser 124 and blown directly from the compressor 101 to the bottom blowout port 164, so that the wind does not become a short circuit and the first condenser. 124 and the cooling efficiency of the compressor 101 can be increased.

(Embodiment 2)
Next, a second embodiment of the refrigerator according to the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, members and devices having the same functions and operations as those in the above embodiment may be denoted by the same reference numerals and description thereof may be omitted.

FIG. 11 is a perspective view showing the appearance of the refrigerator 100 in the embodiment of the present invention.

Refrigerator 100 is a device that stores refrigerated or frozen items stored inward.

The third door 112 is a door that closes the through hole 113 so as to be freely opened and closed. In the case of the present embodiment, the third door 112 is attached to the first door 111 by a hinge (not shown) so as to rotate about a rotation axis extending in the left-right direction at the lower end edge of the through hole 113. ing. The pivot shaft passes through the lower edge of the third door 112.

The fourth door 122 is a door that opens and closes the receiving port 123 that receives ice supplied from the inside of the refrigerator 100.

FIG. 12 is a perspective view showing the appearance of the refrigerator 100 with the first door 111 and the second door 121 opened.

FIG. 13 is a perspective view showing an appearance of the refrigerator 100 in which the first door 111 and the second door 121 are omitted.

The first box 151 is a box that is long in the vertical direction and has an opening on the front surface to form a refrigerator compartment. In the case of the present embodiment, the first box 151 is disposed on the right side of the refrigerator 100 over the entire vertical direction of the refrigerator 100. Note that the refrigerator compartment is a room for storing stored items such as vegetables while maintaining a room temperature that is lower than the temperature outside the refrigerator 100 and higher than the temperature at which water freezes.

The second box 152 is a box that is long in the vertical direction and has an opening on the front surface to form a freezer compartment. In the case of the present embodiment, the second box 152 is disposed on the left side of the refrigerator 100 over the entire vertical direction of the refrigerator 100. Note that the freezer room is a room that maintains a room temperature lower than the temperature of the refrigerator compartment and stores stored items such as frozen food.

Also, a plurality of storage containers 162 for storing food and the like and shelf boards 161 for storing food and the like are attached inside the first box 151 and the second box 152.

The outer box 156 is a metal plate that covers an inner box 157 composed of a first box 151 and a second box 152 that are arranged adjacent to each other in the left-right direction.

Thus, the refrigerator 100 according to the present embodiment is an SBS type refrigerator in which a refrigerator compartment and a freezer compartment are arranged adjacent to each other in the left-right direction.

Here, the box body 150 in the present embodiment is manufactured as follows. That is, the inner box 157 that separates the refrigerator compartment and the freezer compartment by the partition wall 153 is manufactured by integral molding with resin.

Further, the outer box 156 is arranged outside the inner box 157 having the shape shown in FIG. 13 so as to cover the inner box 157 with a predetermined distance from the inner box 157. In addition, a gap that communicates with the gap between the outer box 156 and the inner box 157 is also provided inside the partition wall 153.

A space provided between the outer box 156 and the inner box 157 and an inner space of the partition wall 153 are filled with a heat insulating material such as hard foamed urethane. The box body 150 is manufactured as described above.

Further, a vacuum heat insulating material is disposed between the outer box 156 and the inner box 157. The arrangement position of the vacuum heat insulating material will be described later with reference to FIG.

Thus, in this embodiment, the partition wall 153 that separates the first box 151 and the second box 152 is inseparably integrated. Further, the first box 151 and the second box 152 share a partition wall 153 as a wall portion.

FIG. 14 is a schematic diagram showing the arrangement position of the vacuum heat insulating material in the refrigerator 100 of the embodiment. In addition, in order to show clearly the arrangement position of each vacuum heat insulating material, in FIG. 14, illustration of the inner box 157, the 1st door 111, the 2nd door 121 grade | etc., Is abbreviate | omitted, and each vacuum heat insulating material and the outer box 156 are omitted. Only the positional relationship is shown.

As shown in FIG. 14, the outer box 156 includes a main plate 156a, a back plate 156b, and a bottom plate 156c formed by bending a single metal plate into a U shape.

Further, as shown in FIG. 14, eight pieces of vacuum heat insulating materials, that is, the first vacuum heat insulating material 240 to the eighth vacuum heat insulating material 247 are arranged in the refrigerator 100.

Specifically, the first vacuum heat insulating material 240 is disposed between the back surface of the first box 151 and the outer box 156.

The second vacuum heat insulating material 241 is arranged side by side between the back surface of the second box 152 and the outer box 156 without overlapping the first vacuum heat insulating material 240.

The third vacuum heat insulating material 242 is disposed between the side surface of the second box 152 opposite to the first box 151 and the outer box 156.

The fourth vacuum heat insulating material 243 is disposed between the side surface of the first box 151 opposite to the second box 152 and the outer box 156.

The fifth vacuum heat insulating material 244 is disposed between the first box 151 and the second box 152.

The sixth vacuum heat insulating material 245 is disposed between the bottom surface of the second box 152 and the outer box 156.

The seventh vacuum heat insulating material 246 is disposed between the top surface of the second box 152 and the outer box 156.

The eighth vacuum heat insulating material 247 is arranged inside the second door 121 that closes the front opening of the second box 152 so that it can be opened and closed.

Thus, the first vacuum heat insulating material 240, the second vacuum heat insulating material 241, the third vacuum heat insulating material 242, the fourth vacuum heat insulating material 243, the sixth vacuum heat insulating material 245, the seventh vacuum heat insulating material 246, and the eighth vacuum heat insulating material. The material 247 effectively insulates between the refrigerator compartment and the freezer compartment formed by the first box 151 and the second box 152 and the outside air.

Also, the fifth vacuum heat insulating material 244 effectively insulates between the freezer compartment formed by the second box 152 and the refrigerator compartment formed by the first box 151.

In addition, these vacuum heat insulating materials have a higher heat insulating capacity than heat insulating materials such as rigid urethane foam. Therefore, even if the thickness of the vacuum heat insulating material is thinner than the thickness of the heat insulating material made of hard foamed urethane or the like (for example, about 15 mm), a sufficient heat insulating effect can be obtained.

That is, when the size of the outer box 156 is constant, the distance between the outer box 156 and the inner box 157 is shorter when the vacuum heat insulating material is used than when the vacuum heat insulating material is not used. A sufficient heat insulating effect can be secured. As a result, the size of the inner box 157, that is, the internal volumes of the refrigerator compartment and the freezer compartment can be increased.

Specifically, by arranging each of the third vacuum heat insulating material 242, the fourth vacuum heat insulating material 243, and the fifth vacuum heat insulating material 244, it is possible to increase the length in the left-right direction of the refrigerator compartment and the freezer compartment. it can.

Also, by disposing each of the sixth vacuum heat insulating material 245 and the seventh vacuum heat insulating material 246, the length of the freezer compartment in the height direction can be increased.

Also, by disposing each of the second vacuum heat insulating material 241 and the eighth vacuum heat insulating material 247, the length of the freezer compartment in the depth direction can be increased.

That is, by disposing any one of the first vacuum heat insulating material 240 to the eighth vacuum heat insulating material 247 in the refrigerator 100, the internal volume of at least one of the refrigerator compartment and the freezer compartment can be increased.

Also, a condenser that releases heat is disposed between the back surface of the first box 151 and the back surface of the second box 152 and the outer box 156.

FIG. 15 is a perspective view schematically showing the components of the cooling cycle unit in the embodiment attached to the refrigerator 100. FIG.

As shown in FIG. 15, the cooling cycle unit included in the refrigerator 100 includes a compressor 101, a first condenser 102, a second condenser 203 and a third condenser 204, and an evaporator (Evaporator). ) 105 and 106.

The

condensers

102, 103, and 104 are composed of a series of heat radiating pipes that form a refrigerant flow path. Therefore, the first condenser 202, the second condenser 203, and the third condenser 204 can be regarded as one condenser.

In this cooling cycle unit, heat is released by the first condenser 202, the second condenser 203, and the third condenser 204, and the heat is absorbed by the

evaporators

205 and 106. Thereby, heat can be forcibly moved from one space to the other space.

The compressor 101 is a device that compresses the gaseous refrigerant flowing through the cooling cycle and increases the pressure of the refrigerant.

The first condenser 202, the second condenser 203, and the third condenser 204 are devices that dissipate the heat of the gaseous refrigerant whose pressure has been increased to cool the refrigerant to form a high-pressure liquid refrigerant. .

As the refrigerant of the cooling cycle unit provided in the refrigerator 100 of the present embodiment, for example, a hydrocarbon refrigerant is employed.

Further, as the heat insulating material filled between the outer box 156 and the inner box 157, for example, a foamed resin body using hydrocarbon-based cyclopentane as a foaming agent is employed.

Here, although hydrocarbon-based materials used as refrigerants are flammable, they have little impact on global warming. Therefore, the influence on global warming can be minimized by adopting a hydrocarbon-based material as a refrigerant used in the refrigerator 100.

The

evaporators

205 and 106 are devices that cool the surroundings by vaporizing the refrigerant that has passed through the first condenser 202, the second condenser 203, and the third condenser 204.

In this embodiment, the evaporator 205 is arranged behind the first box 151 and plays a role of cooling the refrigerator compartment. Further, the evaporator 206 is disposed behind the second box 152 and plays a role of cooling the freezer compartment.

The second condenser 203 is disposed on the back surface of the first box 151 and the second box 152 so as to contact the outer box 156. The third condenser 204 is disposed so as to contact the outer box 156 along the periphery of the opening on the front surface of the second box 152. That is, the second condenser 203 and the third condenser 204 release heat through the outer box 156.

The third condenser 204 is a condenser that is disposed at the periphery of the opening of the second box 152, and has a function of cooling the refrigerant and raising the temperature of the periphery of the opening of the second box 152 to prevent condensation. I also have.

When the condenser is configured as described above, the second condenser 203 and the third condenser 204 are condensed even when the capacity of the first condenser 202 exposed to the atmosphere is reduced due to accumulation of dust or the like. In order to complement the capacity as a vessel, the capacity of the cooling cycle unit 110 can be maintained over a long period of time without requiring maintenance.

In a large refrigerator such as an SBS type refrigerator, the capacity of the cooling cycle unit is higher when the heat radiation of the condenser is as large as possible, and the length of the second condenser 203 with a relatively high degree of freedom in shape can be as long as possible. By taking long, the heat radiation of the second condenser 203 is promoted, and the efficiency of the cooling cycle unit can be improved. Further, the condensing capacity can be maintained even when the capacity of the first condenser 202 is lowered due to the long-term operation.

FIG. 16 is a schematic diagram showing a positional relationship among the first box, the second box, the outer box, the second condenser, the first vacuum heat insulating material, and the second vacuum heat insulating material of the refrigerator in the embodiment.

As shown in FIG. 16, the first vacuum heat insulating material 240 and the second vacuum heat insulating material 241 are installed on the back surfaces of the first box body 151 and the second box body 152, respectively. The width is larger than the width of the second box 152. In addition, a gap is provided between the first vacuum heat insulating material 240 and the second vacuum heat insulating material 241 so that the vacuum heat insulating materials come into contact with each other and are not damaged.

In addition, the second condenser 203 is installed so as to be in contact with the vicinity of the ridge line on the back surface of the outer box 156, and two pipes pass through the gap between the first vacuum heat insulating material 240 and the second vacuum heat insulating material 241. , M shape.

Here, since the width of the second vacuum heat insulating material 241 is wider than the width of the second box 151, the back surface of the freezer compartment constituted by the second box 152 is completely covered with the vacuum heat insulating material. As a result, the heat insulation performance of the freezer can be improved.

Also, the piping of the second condenser 203 is not located on the back of the freezer compartment, and heat intrusion from the second condenser 203 to the freezer compartment can be prevented.

As a method for preventing the heat intrusion from the second condenser 203 into the freezer compartment, the vacuum heat insulating material is grooved to a depth through which the piping of the second condenser 203 passes, and the vacuum heat insulating material and the second condenser 203 are overlapped. However, there are problems that the processing cost of the vacuum heat insulating material is increased, the heat insulating performance is deteriorated, and the grooved portion is easily damaged.

As described above, the refrigerator 100 of the present embodiment includes the first vacuum heat insulating material 240 to the eighth vacuum heat insulating material 247 and the second condenser 203. Thereby, improvement of the storage capacity of the refrigerator 100 and effective cooling by effective heat insulation and heat dissipation of the cooling cycle unit are realized.

In the present embodiment, the same effect can be obtained without the third vacuum heat insulating material 242 to the eighth vacuum heat insulating material 247.

Also, in the SBS type refrigerator as in the present embodiment, the storage room is arranged side by side, so that the width is wide. For this reason, when installing a vacuum heat insulating material in the back, if it is going to comprise with one vacuum heat insulating material, you have to use a wide vacuum heat insulating material.

Such a wide vacuum heat insulating material requires a large facility, becomes expensive and increases warpage, so that it easily comes into contact with other parts in the urethane and is easily damaged.

With such a configuration, between the first vacuum heat insulating material 240 and the second vacuum heat insulating material 241 on the rear surface of the refrigerator 100, the heat insulating performance is lowered, and the temperature is lowered due to the heat effect from the low temperature inside the refrigerator. However, since the second condenser 203 passes between the first vacuum heat insulating material 240 and the second vacuum heat insulating material 241, the back surface temperature can be increased.

Thereby, the capacity of the second condenser 102 can be increased, and moisture in the air can be prevented from condensing on the back of the refrigerator 100 when the humidity of the outside air is high.

As a method for preventing the heat intrusion from the second condenser 203 into the freezer compartment, the vacuum heat insulating material is grooved to a depth through which the pipe of the second condenser 103 passes, and the vacuum heat insulating material and the second condenser 203 are overlapped. However, there are problems such that the processing cost of the vacuum heat insulating material is increased, the heat insulating performance of the grooved portion is deteriorated, and the grooved portion is easily damaged.

As described above, the refrigerator 100 of the present embodiment includes the first vacuum heat insulating material 240 to the eighth vacuum heat insulating material 147 and the second condenser 203. Thereby, improvement of the storage capacity of the refrigerator 100 and effective cooling by effective heat insulation and heat dissipation of the cooling cycle unit are realized.

In the present embodiment, the condenser is composed of the first condenser 202, the second condenser 203, and the third condenser 204. For example, even when the first condenser 202 is not provided, the side surface and the ceiling of the refrigerator 100 are provided. Even when other condensers are arranged on the surface, bottom surface, etc., the effect of increasing the capacity of the second condenser can be obtained.

(Embodiment 3)
A machine room 207 is provided at the lower back of the main body of the refrigerator 100, and the compressor 101, the first condenser 202, and the cooling fan 108 are accommodated therein. Further, the opening on the back of the machine room 207 is covered with a cover (not shown) provided with a suction port (not shown) and a blowout port (not shown). During operation of the compressor 101, the cooling fan 108 shown in FIG. 17 is operated. When the cooling fan 108 is operated, outside air is sucked from the suction port, and after cooling the first condenser 202 and the compressor 101, the cooling fan 108 is operated. Blown out.

Thereby, the first condenser 202 has a larger capacity and can increase the efficiency of the cooling cycle.

However, when the first condenser 202 is cooled by the cooling fan 108, the cooling fan 108 sucks up dust in the air, the dust is clogged in the suction port of the cover 109, the air volume of the cooling fan 108 is reduced, and the first condensation is performed. The capacity of the vessel 202 may be reduced. Even in such a case, since the second condenser 203 and the third condenser 204 complement the capacity as a condenser, it is possible to maintain the capacity of the cooling cycle unit 110 for a long time without requiring maintenance. Become.

Also, with respect to other effects, the same effects as in the second embodiment can be obtained.

The present invention can be used for a refrigerator for home use or for business use, and can be used for a refrigerator in which a refrigerator compartment and a freezer compartment are arranged adjacent to each other in the left-right direction.

In addition, the present invention can provide a refrigerator that includes a refrigerator compartment and a freezer compartment that are disposed adjacent to each other in the left-right direction, and that efficiently cools the storage compartment while increasing its capacity. . Therefore, the present invention is useful as refrigerators of various types and sizes such as home use and business use.

DESCRIPTION OF SYMBOLS 100 Refrigerator 101 Compressor 102 Condenser 103 Evaporator 104 Main pipe 105 Bypass pipe 106 Switching valve 107 Valve 108 Cooling fan 110 Cooling cycle unit 111 First door 112 Third door 113 Through-hole 114 Water cooling device 115 Insulator 116 Water pipe 120 Machine Chamber 121 Second door 122 Fourth door 123 Supply port 124 First condenser 125 Second condenser 126 Third condenser 131 First evaporator 132 Second evaporator 133 Guide water channel 134 Second guide water channel 140 Evaporating dish 141 Blower 143 Concave portion 145 Inclined portion 147 Introduction hole 150 Box body 151 First box body 151a Inclined surface 152 Second box body 153 Partition wall 156 Outer box 156a Main plate 156b Back plate 156c Bottom plate 157 Inner box 160 Base plate 161 Horizontal rib 162 Vertical rib 63 Bottom inlet 164 Bottom outlet 165 Cover 166 Front inlet 167 Front outlet 202 First condenser 203 Second condenser 204

Third condenser

205, 106 Evaporator 207 Machine room 240 First vacuum heat insulating material 241 Second Vacuum heat insulating material 242 Third vacuum heat insulating material 243 Fourth vacuum heat insulating material 244 Fifth vacuum heat insulating material 245 Sixth vacuum heat insulating material 246 Seventh vacuum heat insulating material 247 Eighth vacuum heat insulating material

Claims

A compressor, a condenser connected to the compressor, and an evaporator connected to the condenser and evaporating a refrigerant, storing the compressor and the condenser, and further, the condenser, A refrigerator having a machine room for storing a blower for generating air to cool in the order of the compressor on the lower back,
A base plate to which the condenser, the blower and the compressor housed in the machine room are mounted side by side in the left-right direction;
A rear space in which the condenser, the blower, and the compressor are disposed in the machine room, and a front space in front of the rear space. Horizontal ribs that divide the
A front suction port that is arranged on one side of the right and left sides of the lateral ribs and circulates air in the front-rear direction;
A front outlet that is arranged on the other side of the left and right sides of the lateral rib and circulates air in the front-rear direction;
A vertical rib that abuts the base plate and partitions the machine room in the left-right direction on the front side of the horizontal rib;
A bottom suction port on the condenser side that opens in a forward direction from the lateral rib of the base plate;
The refrigerator provided with the bottom face outlet on the said compressor side opened in the front direction of the said horizontal rib of the said base plate.
The refrigerator according to claim 1, wherein the front suction port opens with a width from a side wall surface of the refrigerator to a vicinity of a center in a left-right direction of the condenser.
The refrigerator according to claim 1 or 2, wherein the front outlet is opened with a width from a side wall surface of the refrigerator to a vicinity of a center in a left-right direction of the compressor.
A first box configured in a vertical direction having an opening on the front and forming a refrigerator compartment;
A second box configured in the vertical direction having an opening on the front surface to form a freezing chamber;
A refrigerator comprising the first box and the outer box covering the second box arranged adjacent to each other in the left-right direction,
A refrigerator provided with the 1st vacuum heat insulating material and 2nd vacuum heat insulating material which are arrange | positioned between the back surface of said 1st box and said 2nd box, and said outer box.
further,
A compressor,
A first condenser connected to the compressor and directly exchanging heat with air;
Connected to the first condenser, and disposed between the first box and the second box and the outer box and outside the first vacuum heat insulating material and the second vacuum heat insulating material. A second condenser for exchanging heat with air via a box;
The refrigerator of Claim 4 provided with the evaporator which is connected with a said 2nd condenser and evaporates a refrigerant | coolant.
further,
The shape of the second condenser is M-shaped, and heat exchange with air is also performed through the outer box in the gap between the first vacuum heat insulating material and the second vacuum heat insulating material.
The refrigerator according to claim 5.
further,
The width of the second vacuum heat insulating material is at least the length of the freezer compartment,
The refrigerator according to claim 6.
further,
A machine room that houses the compressor, the first condenser, and a cooling fan that cools the compressor and the first condenser is provided in the lower rear part,
The refrigerator according to any one of claims 4 to 7, further comprising a cover that closes an opening of the machine room and includes a suction port and a blowout port for a cold generated by the cooling fan.