CH710730A2 - Cooling unit with a base part divided into a warm area and a cold area. - Google Patents

Abstract

A refrigerator has at least one refrigerated compartment (1) and / or at least one freezer compartment (2) and a heat pump. In this case, the evaporator (10), the compressor (7), the condenser (8) and the throttle (9) of the heat pump are arranged in a base part (3) of the refrigerator. The base part (3) is subdivided into a hot area (5) and into a cold area (6), wherein the compressor (7) and the condenser (8) are arranged in the hot area (5) and the evaporator (10) in the cold area (6) are. This arrangement allows a compact design of the refrigerator.

Description

Field of the invention

The invention relates to a refrigerator, in particular a built-in refrigerator, comprising a refrigerating compartment and / or a freezer and a heat pump with evaporator, compressor, condenser and throttle.

background

Embodiments of a refrigerator are known in which the evaporator is arranged on the rear side of the refrigerating compartment and / or the freezer compartment in order to cool the refrigerating compartment and / or the freezer compartment directly via a rear wall of the compartments.

Presentation of the invention

It is an object of the present invention to provide a cooling device of the type mentioned, with a compact arrangement of the refrigerator compartment and / or freezer compartment and heat pump.

This object is achieved by the cooling device according to claim 1. Accordingly, the evaporator, the compressor, the condenser and the throttle are arranged in a base part. The base part is divided into a warm area and a cold area. The compressor and the condenser are arranged in the warm area and the evaporator in the cold area.

As a base area is to be understood a lower end portion of the refrigerator, which is arranged in particular below the lowest cooling compartment and / or the freezer compartment.

The cold area and the warm area are advantageously separated from one another by a first insulation element. In this case, the first insulation element may be L-shaped and / or the first insulation element is configured such that it surrounds the evaporator.

Under the insulation element is an element for thermal insulation to understand. In this case, the insulation element has a higher heat transfer resistance compared with a conventional wall and is embodied, for example, as a vacuum insulation element.

Due to the L-shaped configuration, the first insulating element can be arranged close to the evaporator and the evaporator directly surrounded on at least two sides. The cold zone, in which the evaporator is arranged, is therefore made compact.

Advantageously, the first isolation element has a vertical leg which is arranged parallel to a user door of the refrigerator and the door side of the evaporator, and a horizontal leg which extends below the evaporator.

Furthermore, the hot area can be delimited from the refrigerator compartment or from the freezer compartment by a second insulation element. In this case, the second insulating element extends substantially from a front side of the refrigerator to the cold area. The second insulation element is designed in particular rectangular.

By isolating the cold area from the warm area by a first insulation element and by the insulation of the hot area from the refrigerator compartment or freezer compartment through a second insulation element, the thermal insulation of the heat-generating base part relative to the cold area and the compartments can be effected in a simple and compact manner. The insulation elements can be configured in a simple geometric form so that, for example, commercially available vacuum insulation panels can be used as insulation elements. Another advantage is that, for example, coolant or condensation water lines can not be led from the cold area directly through walls, but between the first and the second insulation element into the warm area.

The fact that the second insulation element extends to the cold region can be realized in particular by the second insulation element being adjacent to the first insulation element or directly to a component arranged in the cold region.

Advantageously, the second insulating element is inclined, in particular at an angle greater than 15 °, in particular greater than 20 °, in particular greater than 25 °, in particular greater than 30 °, in particular greater than 35 °, in particular greater than 40 °, and / or less than 90 °. in particular be less than 75 °, in particular less than 45 ° to a horizontal plane.

For example, if the second insulating element is arranged at an angle such that it is at the front, i. towards a user door of the refrigerator, deeper and higher in the rear area, so small arranged in the hot area components, in particular a condensate tray, in the front and large arranged in the warm area components, in particular a compressor, may be arranged in the rear area. As a result, the warm area can be made compact and extends only over the space required for accommodating the components.

Under the horizontal plane that level is to be understood, which is horizontal in the intended installation of the refrigerator.

In particular, the front end of the second insulating element is arranged lower than the rear end.

This brings with it the advantage that the cooling compartment and / or the freezer compartment to the front has the largest possible access area through which the subjects are accessible to the user. The user also visually perceives a larger storage space.

The second insulation element may in particular be continuous, in particular in one piece, designed as a flat and flat plate.

Throughout means in particular over at least 70% of the length of the second insulating element. A flat plate is to be understood as meaning a plate which as a whole lies in a geometric plane.

By using a flat plate, for example, the use of a vacuum insulation plate as the second insulating element at low cost, because it is easy to produce.

Advantageously, the second insulating element has a flat and flat main portion and at least one end an end portion. In this case, the main portion at the angle of the second insulating member and the end portion are arranged horizontally. The end portion is shorter than a half, in particular shorter than a third, in particular designed shorter than a quarter of the main portion.

Advantageously, at least one of the insulation elements is designed as a vacuum insulation panel.

Furthermore, the evaporator may be arranged partially behind the hot area and partly behind the cooling or freezing compartment adjacent to the base part.

Be arranged behind something means that seen in the horizontal direction of the user door, the evaporator is partially covered by the hot area and partly by the adjoining the base part cooling or freezing compartment.

Advantageously, the capacitor can be arranged substantially in the vertical direction below the evaporator. The condenser need not be located directly below the evaporator, there may also be other components in between.

In particular, a vertically extending air supply channel and a vertically extending air discharge channel are arranged on the evaporator.

The evaporator and the air ducts may be arranged and configured such that the air flows through the air supply channel from top to bottom in the evaporator and the air flow is deflected so that the air exiting the evaporator upwards and through the air discharge channel from below flows upwards.

In the cold region, a deflection device may be arranged and the evaporator may have a first and a second evaporator section, such that the air flows through the first evaporator section from top to bottom, is deflected by the deflection device, so that the air through the second evaporator section from bottom to top, with both the first and the second evaporator section having a cooling capacity.

Advantageously, at least one fan for conveying the air through the evaporator and in the cooling and freezing compartment is arranged above the evaporator in the air supply and / or in the air discharge channel.

Because the condensate collects in the lower part of the evaporator, the arrangement of the fan above the evaporator has the advantage that the condensation and the fan are as far away from each other. Furthermore, the bottom of the evaporator only results in a catchment point for the condensate.

Advantageously, a container for ice formation is arranged in a lowermost region of the freezer compartment adjacent to the base part.

In particular, in a cooling device with a slanted, rising from front to back second insulation element, the lowermost portion of the adjoining the base part freezer has the lowest horizontal depth, so that the space is optimally utilized when in the lowest area a container for Ice formation with relatively shallow depth is arranged. In the container for ice formation, for example, ice cubes can be formed.

Advantageously, coolant lines for conducting coolant in the heat pump cycle between the evaporator and the condenser are configured and arranged such that they pass through between the first and the second insulation element.

With this configuration, the coolant line can connect the arranged in the cold area evaporator arranged in the hot area components without a breakthrough in one of the insulation elements is required.

In addition, the cooling compartment or freezer compartment adjoining the base part is partially arranged in a substantially vertical direction above the evaporator.

This means that at least a part of a compartment is arranged above the evaporator. This is possible, for example, in that the air supply duct running vertically upwards from the evaporator and / or the air discharge duct are made thinner than the evaporator, and there is space above the evaporator to arrange a part of a compartment.

Advantageously, the condenser has a first and a second condenser section, and at least one fan, in particular at an angle to the horizontal plane, is arranged in the warm region, wherein the condenser sections and the at least one fan are arranged such that air flowing in from outside into the warm region enters given order by the first condenser section, flows through the at least one fan and then, in particular in the opposite direction as through the first condenser section, through the second condenser section.

Advantageously, the first and the second capacitor section are arranged horizontally next to each other.

Furthermore, in the hot area a condensation water and coolant lines, for conducting cooling water from the compressor to the condenser, adjacent to each other or arranged one inside the other, such that heat from the coolant lines to the condensate tank can be transferred.

Advantageously, the base part with the warm area and the cold area is designed like a module, so that it, in particular in one piece, from the refrigerator compartment and the freezer compartment is removable.

Advantageously, the throttle is designed as an electronic expansion valve.

In a preferred embodiment, the cooling device has at least one outer, in particular integrally ausgestaltetes, insulating element, which is located on a rear side and / or on a side surface of the refrigerator both at least partially a height of the cooling and / or the freezer compartment as well extends over at least partially a height of the base part.

As a result, the outer insulation element simultaneously serves the isolation of the cooling and the freezer compartment and the base part.

Brief description of the drawings

Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to the figures. Showing: <Tb> FIG. 1 <SEP> a schematic view of the base part, the freezer compartment and the refrigerating compartment, <Tb> FIG. 2 <SEP> an interior view of the evaporator from behind, <Tb> FIG. 3 <SEP> a back view of the base part, <Tb> FIG. 4 <SEP> a section through the base part with top view, <Tb> FIG. 5 <SEP> some of the components of the refrigeration unit arranged in the base part, and <Tb> FIG. 6 is a schematic view of the base part with a second insulation element, comprising a main portion and two end portions.

Ways to carry out the invention

In Fig. 1, the lower part of a first embodiment of a refrigerator is shown in a schematic view, with a cooling compartment 1, a freezer compartment 2, and a base part arranged thereunder 3. The cooling compartment 1 and the freezer compartment 2 are closed by a user door 4 and accessible to the user from the front 16 by opening the user door 4. The base part 3 is divided into a warm area 5 and a cold area 6. In the warm area 5, a compressor 7, a condenser 8 and a throttle 9 are arranged, wherein the compressor 7 and the condenser 8 emit heat to the environment. In the cold region 5, an evaporator 10 is arranged, through which cooling air circulates in exchange with the refrigerating compartment 1 and the freezer compartment 2 and is cooled by the evaporator 10. Between the cooling compartment 1, the freezer compartment 2 and the evaporator 10, the cooling air circulates in an air supply channel 11 and in an air discharge channel 12, driven by at least one cooling air fan 13.

The hot area 5 and the cold area 6 are thermally separated from each other by a first insulation element 14. The first insulation element 14 is L-shaped. A second insulation element 15 thermally separates the warm area 5 from the freezer compartment 2. The second insulating element 15 is designed as a flat plate and arranged at an angle α obliquely to the horizontal. The second insulating member 15 extends from the front side 16 of the refrigerator, i. from the side on which the user door 4 is arranged to the cold area 6 and then adjoins the evaporator 10. At the Reverse an outer insulation element 15a is arranged, which isolates the cooling and the freezer compartment as well as the base part from the environment. Both the first insulation element 14, the second insulation element 15 and the outer insulation element 15a are configured as vacuum insulation plates. Since the insulation elements 14, 15, 15a are simple geometries, the production of the vacuum insulation panels requires a relatively low production outlay. Furthermore, the shape and the arrangement of the two insulation elements 14, 15 allow compact accommodation of the heat pump in the base part. The L-shaped first insulation element 14 surrounds the evaporator 9 and does not need much space. The second insulating element 15 allows by its oblique orientation a compact arrangement of components in the base part. 3

For example, components of lesser height, such as the condensate tray 18, arranged in the front region of the base part 3, while components with a greater height, such as the compressor 7, are arranged in the rear part of the base part 3. As a result, the base part 3 occupies only as much space of the refrigerator as necessary and there is more room for the arrangement of the refrigerator compartment 1 and the freezer compartment 2 available.

The oblique arrangement of the second insulating member 15 also allows the freezer compartment 2 extends at the front over the largest possible height, so that the user door 4 can be configured as large as possible, so that the user easier access to the freezer compartment 1 and the freezer 2 receives.

The generously designed user door 4 allows the freezer 2 act particularly large.

Even if the freezer compartment 2 has only a small depth in the lowest area, this space can still be optimally utilized by arranging a small compartment 17, for example for the formation of ice cubes, in this area.

2 and 3 show a rear view of the base part 3. It can be seen here is the flow of the cooling air, which flows through the evaporator 10. The air circulates due to at least one cooling air fan 13 which is e.g. is arranged at the outlet of the evaporator 10. In this case, the cooling air is sucked in from the cooling compartment 1 and / or from the freezer compartment 2 via an air supply duct 20 to the evaporator 10. After entering the evaporator 10, the cooling air flows through the fins of a first evaporator section 21 from top to bottom. Subsequently, the cooling air is deflected by a curved guide wall 22 in the opposite direction by 180 °, so that it flows through a second evaporator section 23 from bottom to top. Following the second evaporator section 23, the at least one cooling air fan 13 is arranged, which conveys the cooled cooling air via an air discharge channel 24 back into the refrigerating compartment 1 or into the freezer compartment 2.

Fig. 4 shows a horizontal section through the base part 3 with a view from above. Ambient air flows from the rear side into the warm area 5 of the base part 3 for cooling the condenser 8 and the compressor 7.

For this purpose, the ambient air is sucked in at the front side 16 from the environment. This then flows below the warm area 5 through an air channel to the rear side 19 of the refrigerator, where it enters the warm area 5 after a 180 ° deflection.

After entering the warm area 5, the ambient air flows through a first condenser section 25, past the compressor 7 and at the condensation water 18, through a hot air fan 26, through a second condenser section 27 and then out of the warm area 5. As a result of this flow profile, a plurality of components arranged in the warm region can be cooled by the same ambient air flow.

For additional promotion of the evaporation of condensation in the condensate tank 18 run coolant channels 28 of the heat pump below or in the condensate tank 18 to heat the condensate tank 18. The vaporized condensate is then transported out of the warm zone via the ambient air flow. The coolant lines 28 are those coolant lines 28 which connect the compressor 7 to the condenser 8.

Fig. 5 shows the arranged in the base part 3 components of the heat pump, which are interconnected by coolant lines. The throttle 9 of the heat pump is designed as an electronic expansion valve. The flow resistance can thus be varied by a controller. Heatpipes 29 are disposed between coolant lines 28 to convey heat, in particular to the user door frame, so that the sealing points of the user door 2 do not freeze.

In Fig. 6, the lower part of a second embodiment of the refrigerator is shown in a schematic view. In comparison to the cooling device from FIG. 1, the second insulation element 15 has a main section 30 and two horizontally extending end sections 31. The main portion 30 and the at least one end portion 31 may be configured as a one-piece second insulation member 30, or as different components connected to each other.

While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited to these and may be embodied otherwise within the scope of the following claims.

Claims (15)

1. cooling device, in particular built-in cooling device, comprising at least one cooling compartment (1) and / or at least one freezer compartment (2), a heat pump with evaporator (10), compressor (7), condenser (8) and throttle (9), characterized in that the evaporator (10), the compressor (7), the condenser (8) and the throttle (9) are arranged in a base part (3) and the base part (3) is arranged in a hot area (5) and a cold area (6). is divided, wherein the compressor (7) and the condenser (8) in the hot area (5) and the evaporator (10) in the cold area (6) are arranged. 2. Cooling device according to claim 1, wherein the cold region (6) and the hot region (5) are separated by a first insulation element (14), in particular wherein the first insulation element (14) is L-shaped and / or the first insulation element (14 ) is configured such that it surrounds the evaporator (10). 3. Refrigerator according to one of the preceding claims, wherein the hot area (3) of the refrigerated compartment (1) or freezer compartment (2) by a second insulation element (15), which is in particular rectangular designed, is delimited, and wherein the second insulation element ( 15) extends substantially from a front side (16) of the cooling device to the cold region (6). 4. Cooling device according to claim 3, wherein the second insulating element (15) obliquely, in particular at an angle (α) greater than 15 °, in particular greater 20 °, in particular greater 25 °, in particular greater 30 °, in particular greater 35 °, in particular greater 40 °, and / or less than 90 °, in particular less than 75 °, in particular less than 45 ° to a horizontal plane is arranged. 5. Cooling device according to claim 4, wherein the second insulating element (15) is configured continuously, in particular in one piece, as a flat and flat plate. 6. A refrigerator according to claim 4, wherein the second insulating member (15) has a flat and planar main portion (30) and at least one end an end portion (31), wherein the main portion (30) at an angle of the second insulating element (15) and the End portion (31) are arranged horizontally, wherein the end portion (31) shorter than a half, in particular shorter than a third, in particular shorter than a quarter of the main portion (30) are configured. 7. Refrigerator according to one of claims 2 to 6, wherein at least one of the insulation elements (14,15) is designed as a vacuum insulation panel. 8. Refrigerator according to one of the preceding claims, wherein the evaporator (10) partially behind the hot area (5) and partly behind the on the base part (3) adjacent cooling (1) or freezer compartment (2) is arranged. 9. Refrigerator according to one of the preceding claims, wherein the capacitor (8) is arranged substantially in the vertical direction below the evaporator (10). 10. Refrigerator according to one of the preceding claims, wherein the evaporator (10) a vertically extending air supply channel (20) and a vertically extending air discharge channel (24) are arranged. 11. Refrigerator according to one of the preceding claims, wherein in a lowermost region of the base part (3) adjacent freezer compartment (2) a container for ice formation (17) is arranged. 12. Cooling device according to claim 2 and 3 and according to one of claims 4 to 11, with coolant lines, for the passage of coolant in the heat pump cycle between the evaporator (10) and the condenser (8), which between the first insulating element (14) and the second Insulation element (15) extend therethrough. 13. The refrigerator according to one of the preceding claims, wherein the cooling compartment (1) or freezer compartment (2) adjoining the base part (3) is arranged partially in a substantially vertical direction above the evaporator (10). 14. Refrigerator according to one of the preceding claims, wherein in the cold region (6) a deflection device (22) is arranged and the evaporator (10) has a first evaporator section (21) and a second evaporator section (23) which are arranged such that the Air flows through the first evaporator section (21) from top to bottom, is deflected by the deflecting device (22), so that the air flows through the second evaporator section (23) from bottom to top, wherein both the first evaporator section (21) and the second evaporator section (23) have a cooling capacity. 15. Cooling appliance according to one of the preceding claims, wherein the capacitor (8) has a first condenser section (25) and / or a second condenser section (27) and in the hot area at least one fan (26), in particular inclined to the horizontal plane, wherein the condenser sections (25, 27) and the at least one fan (26) are arranged in such a way that air flowing in from outside into the hot area passes through the first condenser section (25), through the at least one fan (26) and then, in particular in the opposite direction as through the first condenser section (25), flows through the second condenser section (27).