CN100451501C - Refrigerator - Google Patents

Abstract

A refrigerator stated is characterized in that it includes a machine room (14) formed on a lower part of a rear of a main body of the refrigerator; a refrigerant compressor (12) installed offset to one side in the machine room (14) in a width direction; and a cooler (9) for receiving a refrigerant from the refrigerant compressor (12) and cooling an inside of a storage chamber; wherein the cooler (9) is arranged inside the refrigerator via a heat insulating wall (3a) of the main body above the refrigerant compressor (12) arranged on one side of the machine room (14) and at a position on an opposite side of the refrigerant compressor (12) in a width direction; and control and power source boards (21) of the refrigerator are arranged in another wide space of the refrigerant compressor (12) in the machine room (14) in a width direction. As described above, a refrigerator is provided which, by changing the position relationship and structure of the cooler (9), the refrigerant compressor (12), and the control and power source boards (21), can reduce the thermal loss of the cooler (9), improve the heat insulation efficiency, and increase the heat radiation efficiency of the machine room (14) and a condenser (13), and thereby can obtain a power conservation effect.

Description

Refrigerator

Technical field

The present invention relates to refrigerator, relate in particular to the improvement of the configuration structure of cold medium compressor in the Machine Room of refrigerator and cooler.

Background technology

In the prior art, refrigerator is taked various corrective measures to advance province electrification and obtained achievement, but in recent years, consider that expectation reduces the refrigerator of power consumption more consumingly from the viewpoint of resource environment.

At this needs, as Fig. 9 and shown in Figure 10, the cold medium compressor 42 of a ring of the formation freeze cycle in the current refrigerator is set at the cardinal principle central portion of the width in the Machine Room 44 of the lower backside that is formed at refrigerator main body 31; Acceptance from the refrigerant of this compressor 42 generate the cold storage chamber be the refrigeration of cold air of refrigerating space 35 and reefer space 37 with cooler 38 and freezing with cooler 39, then be set at central portion with the inside front of compressor 42 opposed insulated shell.And, control/power supply board 51 be set at the insulated shell back side, with the outer surface of refrigeration with the adiabatic wall 33 in cooler 38 relative positions.(for example with reference to patent documentation 1)

In addition, as Figure 11 and shown in Figure 12, structure as the dischargeable capacity in the installation effectiveness that improves the Machine Room, the raising refrigerator, following structure is arranged: the part at the rear, bottom of refrigerator main body is caved in and the formation recess, constitute Machine Room 71 at this recess and accommodate compressor 72, in refrigerator inboard cooler 69 is set with compressor 72 adjacency, and, across adiabatic wall 63 Electronic Control substrate 81 (with reference to patent documentation 2) is set at the back of cooler 69.Also have as shown in figure 13, improve the structure of space utilization efficient and cooling effectiveness as not destroying health, following structure is arranged: identical with above-mentioned patent documentation 2, one side of 104 width forms recess compressor 102 is set in the Machine Room, and cooler 99 is being set across adiabatic wall and this compressor 102 adjoining positions, and, with the Machine Room 104 of compressor 102 adjacency in condenser or drainpipe are set, and evaporating pan 83 (with reference to patent documentation 3) is set in the bottom, main body bottom surface in compressor 102 the place aheads.

Patent documentation 1: TOHKEMY 2003-65658 communique;

Patent documentation 2: TOHKEMY 2001-41635 communique;

Patent documentation 3: TOHKEMY 2002-130922 communique.

But, in the structure of above-mentioned patent documentation 1, because the refrigeration as absorber of low temperature cooler 38 and freezing with cooler 39, with as the cold medium compressor 42 of high-temperature component and nearer as the position relation of the control/power supply board 51 of heater, because of heat loss takes place in the heat leakage in each cooler, and be difficult to guarantee required adiabatic wall thickness, reveal increase to the heat of storeroom inboard, have the low shortcoming of cooling effectiveness from cold medium compressor 42 or control power supply board 51.

In addition, because cold medium compressor 42 is positioned at the substantial middle portion of body width direction, therefore, from the space bar 48 that is used to install the heat transmission cooling fan 49 that is located at the compressor side narrowed width of the air inflow aperture 50 in the Machine Room 44 of side upstream, become minimum from main body front openings 31b extraneous air that flows into and the heat exchange area that is arranged on the tabular condenser 43 on the main body bottom surface, radiating efficiency reduces.

In addition, the purpose of the structure of patent documentation 2 is, seek the service efficiency of Machine Room, therefore, identical with patent documentation 1, compressor 72 and the distance between the cooler 69 as thermal source are shorter, and, be provided with control substrate 81 at the back side of cooler 69, therefore, same with above-mentioned patent documentation 1, reveal the heat loss that cooler 69 takes place because of heat, be difficult to guarantee adiabatic wall thickness, in the structure of patent documentation 3, cooler and heater are essentially identical near this point, therefore produce same problem.

Summary of the invention

The present invention considers the problems referred to above and finishes, its purpose is to provide a kind of refrigerator, concern and structure by being provided with of change cooler and cold medium compressor and control/power supply board, reduce the heat loss of cooler, and when improving adiabatic efficiency, improve the radiating efficiency of Machine Room and condenser, can access power saving effect.

In order to solve above-mentioned problem, be to comprise according to the refrigerator invention of technical scheme 1: the Machine Room is formed on the lower backside of refrigerator main body; Cold medium compressor, a side setting of deflection width in this Machine Room; And cooler, accept refrigerant from this cold medium compressor to cooling off in the storeroom; Described cooler is across the refrigerator inboard of main body adiabatic wall, be configured in width transversely with the position of above-mentioned cold medium compressor opposition side, described main body adiabatic wall is in the top of the above-mentioned cold medium compressor that is configured in Machine Room one side; Control/the power supply board of refrigerator is arranged on the big space of width of the side that does not dispose above-mentioned cold medium compressor on the width in the Machine Room, and, should control/power supply board is divided into front and back stages and overlapping; To be divided in front and back stages and the overlapping control/power supply board one as the high-tension circuit plate, another is located at the inboard, Machine Room as the low-voltage circuit plate with above-mentioned high-tension circuit plate.

Pass through said structure, cooler can keep sufficient adiabatic metric space with high temperature parts such as cold medium compressors, therefore can reduce its heat loss, can guarantee the adiabatic wall thickness stipulated as insulated shell, thereby prevent the heat leakage, and improve the radiating efficiency of Machine Room and condenser, help reducing power consumption.

In addition, according to the present invention, in the space of the lower Machine Room of top board height, control/power supply board can be installed simply, and can guarantee the adiabatic wall thickness at the refrigerating chamber back side.

Description of drawings

By with reference to following detailed description in conjunction with the accompanying drawings, will be better understood more institute of the present invention valuable with the lot of advantages of following it to obtain.

Fig. 1 is the longitudinal section of the refrigerator of expression an embodiment of the invention.

Fig. 2 is a stereogram of seeing the refrigerator of Fig. 1 from the back side.

Fig. 3 is the back side enlarged drawing of the Machine Room part among Fig. 2.

Fig. 4 is the amplification view of the Machine Room part among Fig. 2.

Fig. 5 is the stereogram of the Machine Room shown in Figure 3 part seen from the place ahead.

Fig. 6 is the circuit structure diagram of an embodiment of expression control/power supply board of the present invention.

Fig. 7 is the stereogram of the structure of the control/power supply board in the presentation graphs 4.

Fig. 8 is the longitudinal section of control/power supply board shown in Figure 7.

Fig. 9 is the longitudinal section of the existing refrigerator of expression.

Figure 10 is the rearview of Fig. 9.

Figure 11 is the rearview of the Machine Room of existing other refrigerator of expression.

Figure 12 is the longitudinal section of Figure 11.

Figure 13 is the longitudinal section of the lower rear part of another current refrigerator of expression.

The specific embodiment

Below, embodiments of the present invention are described with reference to the accompanying drawings.In addition, the same member to institute's drawings attached has marked identical mark.

Below, an embodiment of the invention are described with reference to the accompanying drawings.At Fig. 1 longitudinal section is shown, the refrigerator main body 1 of the stereogram of seeing from the back is shown at Fig. 2, inner face at outer container 2, form storage space by the interior case 4 that is provided with across adiabatic wall 3, and divide into a plurality of storerooms such as refrigerating chamber 5, vegetable compartment 6, refrigerating chamber 7 by spaced walls.

In each storeroom, utilization is arranged on the refrigeration cooler 8 and freezing with cooler 9 and fan 10,11 in each refrigerating space and the reefer space, be cooled respectively and remain the design temperature of regulation, the running of the freeze cycle of each cooler 8,9 by comprising cold medium compressor 12 and condenser 13 etc. is supplied to refrigerant.

Cold medium compressor 12 in the freeze cycle is set in the Machine Room 14 of the lower backside that is formed at refrigerator main body 1, across cushion body above-mentioned cold medium compressor 12 has been installed on the compression support that is arranged on the width of main body.

Condenser 13 is to make flat parts in the top and bottom welding with the refrigerant pipe of snakelike formation as the wire of heat emission fan sheet, floor space at the refrigerator main body 1 in 14 the place aheads, above-mentioned Machine Room, be provided with condenser 13 on roughly whole, this condenser 13 is accepted to dispel the heat and condensation from the cold media gas of the HTHP of cold medium compressor 12, from the refrigerant of condenser 13 via being supplied to refrigeration in each storeroom after the capillary as relief pipe with cooler 8 or freezing with cooler 9, by evaporation, with the air themperature that is cooled in the storeroom stipulate.

In addition, shown in the longitudinal section of the rearview of the major part of Fig. 3 and Fig. 4, in the Machine Room 14, form to the side-prominent stage portion 16 of refrigerating chamber 7 in the lower backside of main body, by this stage portion 16, on whole width, form and have the depth of regulation and the space of height dimension, one side of the width in deflection 14 spaces, Machine Room is provided with above-mentioned cold medium compressor 12, to it be communicated with the main body floor space that is provided with above-mentioned tabular condenser 13 from compressor to another wide cut space side as hot channel 17.

Near the cold medium compressor 12 in this hot channel 17, be provided with the space bar of on width, separating in the Machine Room 14 18, cooling fan 19 is installed on the bell that is formed on the space bar face.

Pass through said structure, as shown in Figure 5, from being located at condenser 13 on the main body bottom surface to the air inflow aperture 20 of the hot channel 17 of Machine Room 14, can obtain being partial near the position of space bars 18 cold medium compressor 12 of a side of Machine Room 14, that above-mentioned cooling fan 19 is installed and the big width dimensions between the main body wall 1a, therefore, compared with prior art, can enlarge this inlet opening, by this extensive magnitude, it is wide especially as shown by arrows to the heat exchange area of tabular condenser 13 to flow into air, can improve radiating efficiency.

Backside openings in the Machine Room 14 that is formed with hot channel 17 is provided with the tabular control/power supply board 21 that is used to control the refrigerator running.As shown in Figure 4, this control/power supply board 21 is split into 2 parts, and in the Machine Room back side in 14 spaces is provided with forward lapping, and, change each height dimension, highly lower substrate 21a is located at the inboard in space, highly higher substrate 21b is provided with along the rake 16a that the upper opening portion in the back side of above-mentioned refrigerating chamber 7 stage portion 16 forms.

And, from as shown in Figure 6 circuit diagram as can be known, on the lower substrate 21a of above-mentioned height, carried the noise filtering circuit 24 that constitutes by high pressure and relatively large parts, rectification circuit 25, switching power circuit 26 etc.; On highly higher substrate 26b, but carried by the alteration switch portion 27 of low pressure and high-density installation, the motor control part 28 of cold medium compressor and not shown refrigerator control part.

At this moment, in the Switching Power Supply 26 among the highly lower substrate 21a, the power supply of the primary side ground wire 26a of control coil and motor control usefulness is not shared with coil 26b, partly insulate with A.

In addition, the ground wire of the motor controller among the highly higher substrate 21b is that the ground wire of B portion and alteration switch portion 27 is that C portion is connected on one point, motor control part 28 utilizes three parallel resistances to detect the three-phase coil impedance, and drives the motor of cold medium compressor 12 by vector controlled.

Usually, the situation that the substrate of circuit substrate as described above about by 200mm * 300mm constitutes is more, and Switching Power Supply is then with nonisulated mode built-up circuit.But, because substrate space is invalid volume for refrigerator, therefore consider it two is cut apart and improve space efficiency, but under the situation that is divided into the low-pressure side substrate of singly depositing the high-pressure side substrate that constitutes by large component and high-density installation, on the substrate of high-pressure side, still form in the switching power circuit of circuit in nonisulated mode, in order to reduce coil number the control coil of switching power circuit and motor control power supply when shared, can not be connected the ground wire of the motor controller in the low-pressure side substrate and the ground wire of alteration switch portion.

Therefore, exist current detection accuracy to reduce, the problem that service behaviour and noise robustness die down, but, even utilize the said structure will be as the rectification circuit 25 and the switching power circuit 26 of high-pressure side circuit, be segmented in two substrate 21a with alteration switch portion 27 and motor control part 28 as lower-voltage circuit, under the situation on the 21b, in the lower substrate 21a of on high-tension side height, switch transformer is made insulation mode, the motor control that makes the ground wire of rectification circuit 25 and Switching Power Supply portion 26 is not connected with the ground wire of coil, in the higher substrate 26b of the height of low-pressure side, the ground wire of alteration switch portion 27 and the ground wire of motor control part 28 are connected, therefore, can strengthen anti-extraneous noise performance, and, can guarantee to be used for the current detection accuracy of driving transducer, stably CD-ROM drive motor.

Above-mentionedly in the container 29 of taper type shown in Figure 7, located with direction protrusion by two control of cutting apart/ power supply board 21a, 21b; By the lower substrate 21a of height that high pressure such as power circuit and relatively large parts constitute, then be arranged on the inboard in 14 spaces of seeing from the back side, Machine Room; But plug-in mounting the higher substrate 21b of height of circuit block of low pressure such as external microcomputer circuit and high-density installation, then in the overlapping setting in the outside of highly lower substrate 21a; The backside openings portion tegmentum 30 of container 29 is airtight, so that foreign matter can not enter wherein.

At this moment, as shown in Figure 8, the bottom position of the substrate 21a that on high-tension side height is lower is configured to be positioned at the position than the high size h in bottom of highly higher substrate 21b, just in case portion is set because of unexpected reason moisture and foreign matter enter substrate, and when beginning to pile up in the bottom surface of container 29, the influence of control substrate is also rested on the degree of piling up that foreign matter at first arrives the lower-voltage circuit substrate 21b that is positioned at below more and can not cause dysfunction when beginning, can not have influence on the high-pressure side substrate 21a that is arranged on the high position, can reduce the possibility that causes the fault on the safety such as grade on fire.

In addition, on circuit layout, can on the substrate 21b of low tension trackside high-tension circuit be set sometimes, still, can access and above-mentioned same effect by high-tension circuit being located at the top of low-voltage circuit this moment.

Have again, by high-pressure side substrate 21a being arranged to inboard than the more close Machine Room 14 of low-pressure side substrate 21b, high-pressure side substrate 21a is covered by the back side of highly higher substrate 21b, even the user inadvertently runs under the situation of control baseplate part with hand, the possibility of contact high-tension circuit reduces, can form safe structure, and, by to above-mentioned each substrate 21a, the height dimension of 21b is provided with difference, and the configuration that forward laps, can be on Machine Room 14 the formation inclined plane, and have the advantage that forms effective storage space in the refrigerator inboard across adiabatic wall.

By said structure, control/power supply board 21 can be installed in the space of the lower Machine Room 14 of overhead height compactly, and can guarantee the adiabatic wall thickness at refrigerating chamber 7 back sides.

In the hot channel 17 that between the stage portion 16 at the inboard of control/power supply board 21 and the refrigerating chamber back side, forms, also be provided be the electric component that is used to improve power factor be again inductor as heater, help heat radiation by the air that flow through in the pipeline 17.

Below hot channel 17, be provided with reception from the defrost water of cooler 9 and make the evaporating pan 23 of its evaporation.Evaporating pan 23 need have been supposed the storage volume of the maximum defrosting water yield, therefore, use the whole bottom surface of hot channel 17 parts, and, its end exceed on the width above-mentioned space bar 18 below and extend to cold medium compressor 12 near, thereby the expansion volume extends to the part of the discharge line of compressor 12 in the dish and is dipped in the water, utilizes the refrigerant temperature of high temperature to promote the evaporation of water that defrosts.

Therefore, will the lower end of the space bar 18 of cooling fan 19 be installed, bending in the horizontal direction and be fixed on the compression support 15 on, below this bending part, be provided with evaporating pan 23.

Pass through said structure, from the lower openings of refrigerator main body 1 front portion suck, with tabular condenser 13 roughly whole carry out heat exchange and pass through, from the air of air inflow aperture 20 arrival hot channels 17, by cooling fan 19 flow to cold medium compressor 12 around and with its cooling, but, also flow into the air that has carried out heat exchange from upstream to the downstream of fan 19 above the evaporating pan 23 in hot channel 17, thereby can more effectively carry out the defrosting evaporation of water that opening comes above evaporating pan 23.

For the structure of Machine Room, above-mentioned freezing with cooler 9 in the adiabatic wall 3a of the top of the cold medium compressor 12 that makes a side that is configured in Machine Room (14) refrigerator inboard between the centre, be configured on the width side mutually opposite with compressor 12, to accommodate the distance of the cold medium compressor 12 that especially becomes high temperature in the parts far away with the Machine Room by making, its heat affecting can be reduced, and heat loss can be reduced cooling.

In addition, refrigeration is set at the freezing back side portion that uses the refrigerating chamber 5 of cooler 9 tops with cooler 8.As shown in Figure 9, in the prior art, control/power supply board 1 is arranged on and refrigerates with on the cooler 38 opposed outside wall surface.In the present embodiment, as mentioned above, control/power supply board 21 is located in the Machine Room 14, and therefore, refrigeration with freezing same with cooler 9, can not be subjected to the influence that adiabatic thickness that the existence because of control/power supply board 21 causes reduces with cooler 8 yet.

Under situation by above structure operation refrigerator, cold medium compressor 12 passes out to refrigerant in the freeze cycle, the refrigeration that effectively separates with heat generating components such as cold medium compressor 12, control/power supply board 21, inductors 22 and be arranged to not be influenced by heat with and freezing with cooler 8,9, cool off each storeroom.

In addition, for the condenser of accepting from the high-temperature gas refrigerant of cold medium compressor 12 13, air inflow aperture 20 by the wide cut that between the space bar 18 of cooling fan 19 usefulness and main body wall 1a, forms, can make the extraneous air that flows into from main body front openings 1b big to the heat exchange area change of the platen surface of above-mentioned condenser 13, can improve radiating efficiency, near the setting of cold medium compressor 12 more close compressors that described cooling fan 19 is provided with than deflection.

In addition, in Machine Room 14, can make the space of hot channel 17 become big by the cold medium compressor 12 of amesiality setting and the space bar 18 of cooling fan, can be by the compact control/power supply board 21 that is provided with forms hot channel path efficiently at the back.

The application is that the Japanese patent application of applying in the special 2003-301550 of hope and on September 22nd, 2003 is that the spy is willing to that the priority of 2003-330756 is the basis, asks for protection right based on the Japanese patent application of applying on August 26th, 2003.Refer in the present specification by full content with reference to these Japanese patent applications.

Because under the situation of the spirit and scope of not violating this invention, in relative broad range, can constitute different embodiments, therefore this invention in the request scope that is limited to the application, be not subjected to the restriction of specific implementations.

Utilizability on the industry

According to the present invention, can utilize each parts that makes in the Machine Room the configuration compactness, improve heat The refrigerator that is conducive to power saving of exchange efficiency, radiating efficiency and adiabatic efficiency.

Claims (4)

1, a kind of refrigerator is characterized in that, comprising: the Machine Room is formed on the lower backside of refrigerator main body; Cold medium compressor, a side setting of deflection width in this Machine Room; And cooler, accept refrigerant from this cold medium compressor to cooling off in the storeroom; Described cooler is across the refrigerator inboard of main body adiabatic wall, be configured in width transversely with the position of above-mentioned cold medium compressor opposition side, described main body adiabatic wall is in the top of the above-mentioned cold medium compressor that is configured in Machine Room one side; Control/the power supply board of refrigerator is arranged on the big space of width of the side that does not dispose above-mentioned cold medium compressor on the width in the Machine Room, and, should control/power supply board is divided into front and back stages and overlapping; To be divided in front and back stages and the overlapping control/power supply board one as the high-tension circuit plate, another is located at the inboard, Machine Room as the low-voltage circuit plate with above-mentioned high-tension circuit plate.

2, a kind of refrigerator is characterized in that, comprising: the Machine Room is formed on the lower backside of refrigerator main body; Cold medium compressor, a side setting of deflection width in this Machine Room; And cooler, accept refrigerant from this cold medium compressor to cooling off in the storeroom; Described cooler is across the refrigerator inboard of main body adiabatic wall, be configured in width transversely with the position of above-mentioned cold medium compressor opposition side, described main body adiabatic wall is in the top of the above-mentioned cold medium compressor that is configured in Machine Room one side; Control/the power supply board of refrigerator is arranged on the big space of width of the side that does not dispose above-mentioned cold medium compressor on the width in the Machine Room, and, should control/power supply board is divided into front and back stages and overlapping; To be divided in front and back stages and the overlapping control/power supply board one as the high-tension circuit plate, another is as the low-voltage circuit plate, and the bottom position of above-mentioned high-tension circuit plate is arranged on the position higher than the bottom position of low-voltage circuit plate.

3, refrigerator as claimed in claim 2, it is characterized in that, switch transformer in the high-tension circuit plate is made insulated type, the motor control that makes the ground wire of rectification circuit and Switching Power Supply portion is not connected with the ground wire of coil, and has connected the ground wire of alteration switch portion of low-voltage circuit plate and the ground wire of motor control part.

4, refrigerator as claimed in claim 1 or 2, it is characterized in that, height dimension up and down differently is divided into the high substrate of height in front and back stages and the overlapping control/power supply board, along near the rake setting upward in the adiabatic wall the backside openings of the Machine Room outside, and highly low substrate is arranged on the inboard, Machine Room.

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