CN218672790U - Direct cooling type refrigeration equipment - Google Patents

Abstract

The utility model discloses a direct cooling refrigeration device, which comprises a box body with a storage chamber, a door body arranged on the box body and used for opening or closing an opening of the storage chamber, a refrigeration unit and a frost guiding module; the refrigerating unit comprises a compressor, a condenser, a throttling device and a refrigerating evaporator which are sequentially connected; the defrosting module comprises a defrosting evaporator and a flow guide unit, the flow guide unit is used for driving air in the storage chamber to circularly flow between the defrosting evaporator and the storage chamber, and when the air flows through the defrosting evaporator, water vapor in the air is condensed on the defrosting evaporator. The utility model discloses can make and enter into indoor vapor concentration frosting between the storing on drawing the frost evaporimeter to can reduce the frosting of damp and hot air on the indoor wall between the storing in the storing space, and then slowed down the influence of the refrigeration evaporimeter that causes because of the inner wall frosting between the storing room to the indoor cooling efficiency between the storing.

Description

Direct cooling type refrigeration equipment

Technical Field

The utility model relates to a refrigeration plant technical field, especially direct cooling formula refrigeration plant.

Background

Direct-cooling type refrigeration equipment generally adopts the mode of direct cooling to provide cold volume for storing compartment like direct-cooling type horizontal freezer, and the cabinet body of direct-cooling type horizontal freezer generally includes shell and the inner bag of setting on the shell, and the evaporimeter of direct-cooling type horizontal freezer generally remains the evaporating pipe of establishing outside the inner bag, and cold volume conducts from the evaporating pipe to the storing space of inner bag in through heat conduction and natural radiation's mode.

Direct-cooling type horizontal freezer is because the door body is often opened, open the back ambient air at the door body and can enter into between the storing indoor, the mixed vapor in the ambient air, vapor is when touching the inner wall of between the storing indoor after entering into between the storing indoor, because the inner wall temperature of between the storing indoor is lower, vapor in the air can condense on the inner wall of between the storing indoor, thereby condense into frost on the inner wall of between the storing indoor, the long-term accumulation of frost can influence refrigeration plant's refrigeration efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a direct cooling formula refrigeration plant to solve not enough among the prior art, it can make and enter into the indoor vapor concentration frosting between the storing on drawing the frost evaporimeter, thereby can reduce the frosting of humid hot-air on the indoor wall between the storing in the storing space.

The embodiment of the utility model provides a direct cooling refrigeration equipment, including the box that has the storing room, set up on the said box and be used for opening or closing the door body, refrigerating unit and leading the frost module of the storing room opening; the refrigerating unit comprises a compressor, a condenser, a throttling device and a refrigerating evaporator which are sequentially connected;

the defrosting module comprises a defrosting evaporator and a flow guide unit, the flow guide unit is used for driving air in the storage chamber to circularly flow between the defrosting evaporator and the storage chamber, and when the air flows through the defrosting evaporator, water vapor in the air is condensed on the defrosting evaporator.

Furthermore, the box body comprises a cabinet shell and an inner container arranged on the cabinet shell, and the refrigeration evaporator comprises an evaporation coil wound outside the inner container;

the frost guiding evaporator comprises a frost guiding evaporator, and the frost guiding evaporator is provided with a frost guiding evaporation coil communicated with the evaporation coil and a heat conduction fin arranged on the frost guiding evaporation coil.

Furthermore, the frost-guiding evaporation coil and the evaporation coil are arranged in series, and the frost-guiding evaporation coil is arranged between the evaporation coil and the throttling device.

Further, draw the frost evaporating coil with evaporating coil sets up in parallel, throttling arrangement include with draw the frost capillary that frost evaporating coil establishes ties and with the refrigeration capillary that evaporating coil establishes ties and sets up, the cross sectional dimension of frost capillary is less than the cross sectional dimension of refrigeration capillary.

Further, the frost guiding module is also provided with a control unit, and the control unit comprises a flow control part which is used for controlling the secondary refrigerant flowing out of the condenser to flow to the refrigerating capillary tube or the frost condensing capillary tube.

Furthermore, the frost guiding module is also provided with an ice measuring unit arranged on the inner wall of the storage chamber, and the ice measuring unit is electrically connected with the control unit; the ice measuring unit comprises a thickness measuring sensor, and the thickness measuring sensor is used for transmitting the icing thickness data on the inner wall of the storage room to the control unit.

Furthermore, the direct cooling type refrigeration equipment is a horizontal refrigerator, the box body is of a rectangular structure, and the thickness measuring sensor is arranged at the corner position of the box body and is positioned close to the opening of the storage compartment.

Furthermore, the frost guiding module is also provided with a defrosting unit, and the defrosting unit is used for removing frost formed by condensation on the frost guiding evaporator; the defrosting unit comprises a heating element arranged beside the defrosting evaporator.

Furthermore, the frost guiding module is also provided with a water guide disc arranged at the lower part of the frost guiding evaporator and a water guide channel communicated with the water guide disc and the outside;

the water guide channel comprises a water inlet and a drain pipe, the water inlet is formed in the inner wall of the storage compartment, the drain pipe is communicated with the water inlet, and the drain pipe is arranged between the cabinet shell and the inner container; the direct-cooling refrigeration equipment is also provided with a press bin and a water receiving box arranged in the press bin, and the drain pipe is communicated with the water receiving box.

Furthermore, the water conservancy diversion unit includes the fan, draw the frost module still have with air intake, the air outlet of storing room intercommunication and the wind channel of intercommunication air intake and air outlet, draw the frost evaporimeter setting in the wind channel, the fan is used for driving the indoor air of storing room to flow to the air outlet from the air intake.

Furthermore, draw the frost module setting and be in indoor and have the fixing of storing room indoor wall on the casing, the air intake with the air outlet all sets up on the casing, draw the frost evaporimeter with the fan all sets up in the casing.

Further, the direct cooling type refrigeration equipment is a horizontal refrigerator, the storage chamber is arranged with an upward opening, and the shell is supported on two opposite inner walls of the storage chamber and extends along the direction of the opening of the storage chamber to divide the storage chamber into a first chamber and a second chamber;

the horizontal refrigerator is provided with a length direction and a width direction, the shell is supported on two inner walls of the storage chamber opposite to each other in the width direction, and the first chamber and the second chamber are arranged in parallel in the length direction.

Further, the air inlet is communicated with the first chamber and the second chamber simultaneously; the air outlet is provided with a first air outlet arranged towards the opening of the first chamber and a second air outlet arranged towards the opening of the second chamber;

a gap part is arranged between the bottom of the shell and the bottom of the storage chamber and is communicated with the first chamber and the second chamber; the air inlet is arranged at the bottom of the shell and is arranged towards the opening of the gap part.

Further, the casing comprises a base and a cover plate matched with the base, and the frost guiding module is provided with an air guide arranged between the base and the cover plate;

the air guide piece is provided with an air guide body and a communication hole arranged on the air guide body; the air guide body divides the shell into an air inlet cavity communicated with the air inlet and an air outlet cavity communicated with the air outlet; the communicating hole is communicated with the air inlet cavity and the air outlet cavity; the frost guiding evaporator is arranged in the air inlet cavity.

Compared with the prior art, the utility model discloses a setting of water conservancy diversion unit will enter into the storing room in the humid and hot air water conservancy diversion to the position of drawing the frost evaporimeter place in the frost module, because it is lower to draw frost evaporimeter surface temperature, the water vapor in the indoor humid and hot air can condense the frost when drawing the frost evaporimeter through flowing through in the storing room on drawing the frost evaporimeter, can make the indoor water vapor that enters into the storing room concentrate the frost through setting up of above-mentioned structure on drawing the frost evaporimeter, thereby can reduce the frosting of humid and hot air on the indoor wall between the storing in the storing space, and then slowed down because of the influence that the indoor inner wall frosting caused between the storing supplies cold efficiency to the storing room.

Drawings

Fig. 1 is a schematic cooling diagram of a first refrigeration unit of a direct cooling refrigeration device disclosed in an embodiment of the present invention;

fig. 2 is a schematic diagram of cooling of a second refrigeration unit of the direct cooling refrigeration equipment disclosed in the embodiment of the present invention;

fig. 3 is a schematic diagram of cooling of a third refrigerating unit of the direct-cooling type refrigerating apparatus according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a direct-cooling refrigeration device disclosed in an embodiment of the present invention;

fig. 5 is a front view of the direct cooling type refrigeration equipment disclosed in the embodiment of the present invention;

FIG. 6 is a cross-sectional view taken in the direction GG in FIG. 5;

fig. 7 is a sectional view of the NN direction in fig. 5;

FIG. 8 is a cross-sectional view taken in the direction AA of FIG. 5;

FIG. 9 is a sectional view in the direction of FF in FIG. 5;

fig. 10 is a schematic structural diagram of a frost guiding module in the direct cooling refrigeration equipment according to the embodiment of the present invention;

fig. 11 is an exploded view of a frost guiding module in the direct-cooling refrigeration device disclosed in the embodiment of the present invention;

fig. 12 is a front view of a frost guiding module in the direct cooling type refrigerating apparatus according to the embodiment of the present invention;

fig. 13 is a sectional view taken in the direction CC in fig. 12;

fig. 14 is a schematic view of a first mounting structure of an ice measuring unit and a frost guiding module in the refrigeration type refrigeration apparatus according to the embodiment of the present invention;

fig. 15 is a schematic view of a second mounting structure of an ice measuring unit and a frost guiding module in the refrigeration type refrigeration apparatus according to the embodiment of the present invention;

description of reference numerals: 1-box body, 10-storage chamber, 100-gap part, 101-first chamber, 102-second chamber, 11-inner container, 12-cabinet shell, 13-press cabin, 14-water receiving box,

2-refrigerating unit, 21-compressor, 22-condenser, 23-throttling device, 231-frost capillary, 232-refrigerating capillary, 24-refrigerating evaporator, 241-evaporating coil,

3-a frost guiding module, 31-a frost guiding evaporator, 311-a frost guiding evaporation coil, 312-a heat conducting fin, 313-a control unit, 32-a water guiding disc, 33-a water guiding channel, 331-a water inlet, 332-a water discharging pipe,

35-an air inlet, 36-an air outlet, 361-a first air outlet, 362-a second air outlet, 37-a shell, 371-a base, 372-a cover plate, 373-an air inlet cavity, 374-an air outlet cavity,

38-wind guide piece, 381-wind guide body, 39-wind guide clapboard,

4-a fan assembly, 41-a fan,

5-defrost unit, 51-heating element,

6-the ice measuring unit is used for measuring the ice,

Detailed Description

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

The embodiment of the utility model provides a: as shown in fig. 1 to 13, a direct cooling type refrigeration device is disclosed, which comprises a cabinet 1 having a storage compartment 10, a door body provided on the cabinet 1 for opening or closing an opening of the storage compartment, a refrigeration unit 2, and a frost guiding module 3; the refrigerating unit comprises a compressor 21, a condenser 22, a throttling device 23 and a refrigerating evaporator 24 which are connected in sequence;

the frost guiding module 3 comprises a frost guiding evaporator 31 and a flow guiding unit, wherein the flow guiding unit is used for driving the air in the storage chamber 10 to circularly flow between the frost guiding evaporator 31 and the storage chamber 10, and when the air flows through the frost guiding evaporator 31, the water vapor in the air is condensed on the frost guiding evaporator 31.

In the prior art, when the hot and humid air entering the storage compartment 10 from the outside touches the inner wall of the storage compartment 10, frost is easily formed on the inner wall of the storage compartment 10. Because of adopting refrigerated mode for cooling, refrigeration evaporimeter 24 is including the evaporating coil who twines outside the inner bag, the cold volume of evaporating coil transmission conducts to storing room 10 in from the evaporating coil through heat conduction and natural radiation's mode, the cold volume that comes from evaporating coil is directly accepted to the inner wall of storing room 10, consequently, the temperature of the inner wall of storing room 10 is lower relatively, the interior moist hot air that gets into from the external world of storing room 10 condenses easily when touching on the inner wall of storing room 10, thereby form the frost ice on the inner wall of storing room 10. It can be understood that the frost frozen on the inner wall of the storage compartment 10 inevitably affects the efficiency of the transfer of the cooling energy into the storage compartment 10, and thus the cooling efficiency.

In this embodiment, the water vapor in the moist and hot air entering the storage room 10 is guided to the position of the frost guiding evaporator 31 through the setting of the flow guiding unit in the frost guiding module 3, because the surface temperature of the frost guiding evaporator 31 is lower, the water vapor in the moist and hot air in the storage room 10 can condense and frost on the frost guiding evaporator 31 when flowing through the frost guiding evaporator 31, the water vapor entering the storage room 10 can be concentratedly frosted on the frost guiding evaporator 31 through the setting of the structure, thereby the frosting of the moist and hot air in the storage space 10 on the inner wall of the storage room 10 can be reduced, and further, the influence of the refrigeration evaporator on the cooling efficiency of the storage room 10 caused by frosting the inner wall of the storage room 10 is alleviated.

The flow guide unit comprises a fan assembly 4 in the embodiment, the fan assembly 4 comprises a fan 41, the fan 41 controls the air in the storage compartment 10 to circularly flow in the frost guide evaporator 31 and the storage compartment 10, and the wet hot water vapor in the air is condensed when meeting the cold frost guide evaporator 31 in the flowing process, so that frost is formed on the frost guide evaporator 31, and the wet hot air entering the storage compartment 10 is removed.

It can be understood that, for the convenience of implementing direct cooling, as shown in fig. 6-7, the cabinet 1 includes a cabinet shell 12 and an inner container 11 disposed on the cabinet shell 12, the storage compartment 10 is formed on the inner container 11, and the refrigeration evaporator 24 includes an evaporation coil 241 wound around the outer side of the inner container 11; the evaporating coil 241 transmits the cold energy to the interior of the storage compartment 10 in a heat conducting and direct radiation manner. It can be understood that the mode of winding the evaporation coil 241 around the inner container 11 is only one mode of direct cooling, and other modes of direct cooling may also be used to supply cooling to the inside of the storage compartment 10, which is not described herein again.

In this embodiment, as shown in fig. 8 to 11, the frost guiding evaporator 31 includes a frost guiding evaporator 31, and the frost guiding evaporator 31 has a frost guiding evaporation coil 311 communicated with the evaporation coil 241 and heat conducting fins 312 disposed on the frost guiding evaporation coil 311. The heat conducting fins 312 are heat radiating fins arranged on the evaporating coil 311, and the cold area released by the frost guiding evaporating coil 311 can be increased by arranging the heat conducting fins 312, so that the condensation of water vapor on the frost guiding evaporator 31 can be better realized.

The arrangement of the evaporation coil 241 in communication with the frost guiding evaporation coil 311 is to make the frost guiding evaporator 31 and the evaporation coil 241 share one set of refrigeration system, so that the coolant flowing out from the frost guiding evaporation coil 311 passes through the compressor 21 to form high-temperature and high-pressure gas, then passes through the condenser 22 for cooling, passes through the throttling device 23 for pressure reduction, and finally returns to the frost guiding evaporation coil 311. The compressor 21, the condenser 22 and the throttling device 23 corresponding to the frost-leading evaporation coil 311 correspond to the same set of evaporation coil 241, and a set of refrigerating unit is utilized to realize cooling of the frost-leading evaporator 31 and the refrigerating evaporator 24, so that the manufacturing cost can be better saved, the refrigerating unit can be more fully utilized, and too much space cannot be occupied.

It is understood that in other embodiments, two independent sets of the refrigeration units may be used for the frost guiding evaporator 31 and the refrigeration evaporator 24, that is, the frost guiding evaporator 31 has a separate compressor, condenser and throttling device to refrigerate it.

In the present embodiment, a solution that the frost guiding evaporator 31 and the refrigeration evaporator 24 share a set of refrigeration unit is taken as an example for description, wherein, as shown in fig. 1, the frost guiding evaporation coil 311 and the refrigeration evaporator 24 are connected in series in the first embodiment, as shown in fig. 2, the frost guiding evaporation coil 311 and the refrigeration evaporator 24 are connected in parallel in the second embodiment.

In a first embodiment, as shown in fig. 1, the frost-guiding evaporation coil 311 is arranged in series with the evaporation coil 241, and the frost-guiding evaporation coil 311 is arranged between the evaporation coil 241 and the throttling device 23. In this embodiment, the frost-guiding evaporation coil 311 is substantially connected in series between the evaporation coil 241 and the throttling device 23, and the frost-guiding evaporation coil 311 is located at a position closer to the throttling device 23 than the evaporation coil 241.

The arrangement of the structure can enable the secondary refrigerant coming out of the throttling device 23 to provide cold energy for the frost guiding evaporation coil 311 firstly and then provide cold energy for the evaporation coil 241, so that the temperature of the frost guiding evaporation coil 311 is lower than that of the evaporation coil 241, and water vapor in the air flowing through the frost guiding evaporation coil 311 can be better condensed.

In a second embodiment, as shown in fig. 2, the frost inducing evaporation coil 311 and the evaporation coil 241 are arranged in parallel, the throttling device 23 includes a frost condensing capillary tube 231 arranged in series with the frost inducing evaporation coil 311 and a refrigerating capillary tube 232 arranged in series with the evaporation coil 241, and a cross-sectional size of the frost condensing capillary tube 231 is smaller than a cross-sectional size of the refrigerating capillary tube 232.

Set the cross-sectional dimension that is less than refrigeration capillary 232 with frosting capillary 231 cross-sectional dimension, the effect that can make the throttle of frosting capillary 231 step down is better, thereby make the cold volume that draws frost evaporating coil 311 more sufficient relatively, can make the surface temperature that draws frost evaporating coil 311 compare in evaporating coil 241 surface temperature lower, thereby can make the frost mainly concentrate on drawing frost evaporating coil 311, the better realization is drawn the frost on drawing frost evaporating coil 311.

In this embodiment, the compressor 21, the condenser 22, the frost condensing capillary 231 and the frost guiding evaporation coil 311 form a frost guiding evaporation circuit, the compressor 21, the condenser 22, the refrigeration capillary 232 and the evaporation coil 241 form a refrigeration evaporation circuit, the frost guiding evaporation circuit and the refrigeration evaporation circuit are arranged in parallel, and the two circuits share one set of the compressor 21 and the condenser 22. The frost-condensing capillary 231 and the frost-guiding evaporating coil 311 in the frost-guiding evaporating circuit are connected with the refrigerating capillary 232 and the evaporating coil 241 in the refrigerating evaporating circuit in parallel.

The frost guiding module 3 further has a control unit 313, and the control unit 313 includes a flow control member for controlling the flow of the coolant flowing out of the condenser 22 to the refrigerating capillary tube 232 or to the frost condensing capillary tube 231.

In the present embodiment, the flow control member is configured to selectively allow the coolant flowing out of the condenser 22 to flow to the refrigeration capillary tube 232 or the frost capillary tube 231, and the flow control member is configured to prevent the coolant from flowing to the refrigeration capillary tube 232 and the frost capillary tube 231 simultaneously.

Because the refrigeration evaporator 24 and the frost guiding evaporation coil 311 are arranged in parallel, the secondary refrigerant flowing out of the condenser 22 can flow to the frost guiding evaporation coil 311 and the evaporation coil 241 at the same time, but because the cross-sectional size of the frost guiding evaporation coil 311 is smaller than that of the evaporation coil 241, if no flow control element is arranged, the secondary refrigerant flowing out of the condenser 22 can preferentially enter the evaporation coil 241, so that the cold energy on the frost guiding evaporation coil 311 is insufficient, and the frost guiding effect is influenced.

In the embodiment, the flow control member is arranged to control the coolant to enter the frost inducing and evaporating coil 311 and the evaporating coil 241 separately, so as to avoid the above problems. The flow control in one embodiment includes a first electrically controlled valve disposed between the evaporator coil 241 and the condenser 22 and a second electrically controlled valve disposed between the frost inducing evaporator coil 311 and the condenser 22. The first electrically controlled valve may be disposed between the evaporator coil 241 and the evaporator capillary tube 232, or between the evaporator capillary tube 232 and the condenser 22. Accordingly, a second electrically controlled valve may be disposed between the frost inducing evaporation coil 311 and the frost capillary 231 or a second electrically controlled valve may be disposed between the frost capillary 231 and the condenser 22.

In another embodiment, the flow control member may also be a three-way valve disposed at the outlet of the condenser 22, and two outlets of the three-way valve are respectively communicated with the refrigeration capillary tube 232 and the frost condensation capillary tube 231.

Due to the introduction of the flow control, the flow control is required to control whether the coolant flows in the frost evaporation circuit or the refrigeration evaporation circuit. Therefore, in order to better manage and control the cooling capacity, in the present embodiment, the frost-guiding evaporation circuit is started before the refrigeration evaporation circuit is started, wherein the refrigeration evaporation circuit includes a refrigeration evaporator 24, and the refrigeration evaporator 24 is used for supplying cold to the storage compartment 10 of the refrigeration equipment; the frost guiding evaporation loop comprises a frost guiding evaporator 31, the frost guiding evaporator 31 is used for condensing water vapor in air in the storage compartment 10, and the frost guiding evaporator 31 comprises a frost guiding evaporation coil 311.

In this embodiment, the coolant is actually controlled to enter the frost guiding evaporation coil 311 of the frost guiding evaporator 31 through the flow control member, and when the surface temperature of the frost guiding evaporator 31 is reduced to a certain temperature, the frost guiding evaporation loop is closed, and at this time, the coolant cannot enter the frost guiding evaporation coil 311. The flow control then controls the refrigerant evaporation circuit to conduct, at which point the coolant can enter the refrigerant evaporation circuit, i.e., the coolant exits the condenser and enters the refrigeration evaporator 24.

In this embodiment, the secondary refrigerant is first controlled to provide cooling capacity for the frost guiding evaporator 31, so that the surface temperature of the frost guiding evaporator 31 meets the corresponding requirement, and then the secondary refrigerant is controlled to provide cooling capacity for the refrigeration evaporator, that is, to provide cooling capacity for the storage compartment 10. In the process of supplying cold to the storage compartment 10 through the refrigeration evaporator, the air in the storage compartment 10 can condense the hot and humid water vapor in the air on the frost guiding evaporator 31 in the circulation process, and the water vapor in the storage compartment 10 is condensed before the temperature of the inner wall of the storage compartment 10 is reduced.

It will be appreciated that the activation of the deflector unit for controlling the flow of air inside the storage compartment towards the frost-inducing evaporator 31 is controlled after or simultaneously with the activation of the frost-inducing evaporation circuit. The diversion unit is the fan assembly 4, that is, when the cold energy enters the frost guiding evaporator 31, the fan assembly 4 is controlled to operate simultaneously to enable the air in the storage compartment 10 to flow towards the frost guiding evaporator 31, and certainly, the operation of the fan assembly 4 can be controlled after the cold energy of the frost guiding evaporator 31 is reduced, so that the diversion unit can be used more effectively, and the idle running of the diversion unit is avoided.

It will be appreciated that the refrigeration evaporation circuit needs to be shut down before the frost-guiding evaporation circuit is started, since the cross-sectional size of the frost-guiding capillary 231 is smaller than the cross-sectional size of the refrigeration capillary 232, as described above. So if the refrigeration evaporation circuit is not closed, the coolant is preferentially introduced into the refrigeration evaporation circuit, and thus the frost inducing evaporator 31 cannot have enough cooling capacity.

On the contrary, when the refrigeration evaporation circuit is opened, the frost guiding evaporation circuit can be controlled to be opened at the same time, that is, after the temperature of the frost guiding evaporator 31 is reduced to meet the requirement, the secondary refrigerant can be controlled to simultaneously enter the frost guiding evaporation coil 311 and the evaporation coil 241, and as the cross section of the frost guiding capillary tube 231 is small, only a small amount of secondary refrigerant enters, the cold supply of the evaporation coil 241 cannot be influenced, and the requirement of the cold quantity of the frost guiding evaporation coil 311 can be maintained.

In this embodiment, because the cross-sectional dimension of the frost guiding capillary 231 is smaller than that of the refrigeration capillary 232, the surface temperature of the frost guiding evaporator 31 is also relatively lower, so that the water vapor in the storage compartment 10 is more easily condensed on the frost guiding evaporator 31, and meanwhile, the air in the storage compartment 10 is also circulated through the fan assembly 4, so that the water vapor is more easily condensed on the frost guiding evaporator 31. In the present embodiment, when the refrigeration evaporation circuit is opened, the frost guiding evaporation circuit is closed at the same time, the temperature in the storage compartment 10 is reduced when the evaporation circuit is opened, and even if the frost guiding evaporation circuit is closed, the temperature of the surface of the frost guiding evaporator 31 is increased, but the temperature after the increase is lower than that of the refrigeration evaporator, so that the air in the storage compartment 10 is preferentially condensed on the frost guiding evaporator 31 in the circulating flow process.

Before the refrigeration evaporation loop is started, the frost guiding evaporation loop is started firstly, and the frost guiding evaporation loop can be started after the refrigerator is started by plugging electricity, and can also be started in the normal use process of the refrigerator, namely the refrigeration unit can be controlled to be started or stopped by switching the frost guiding evaporation loop and the refrigeration evaporation loop back and forth.

In the actual use process, within a preset period T, firstly controlling the running time of the frost guiding evaporation loop to be T1, then closing the frost guiding evaporation loop, and controlling the running time of the refrigeration evaporation loop to be T2, wherein T1+ T2 is less than T.

In this embodiment, the predetermined period T may be set to 1h, to 1 to 10min, and to 2 to 30min, that is, in a period of one hour during normal use, the coolant is first controlled to supply cold to the defrosting evaporator 31 for 10 minutes, then the coolant supplies cold to the refrigerating evaporator for half an hour, and then the press is stopped for 20 minutes. In this process, the air guiding unit is always in the open state, i.e. the fan assembly 4 is always in the open state, and the fan assembly 4 is used for circulating the air in the storage compartment 10.

The start and stop of utilization press that above-mentioned embodiment can be better avoids the long-time work of press, and then causes the load of press great to lead to the fact the influence to the life of press.

The above embodiment provides a scheme of flowing toward the frost guiding evaporator 31 or the refrigerating evaporator 24 through a specific periodic control flow control member, that is, flowing toward the frost guiding evaporator 31 or not depending on the set time, and this method cannot accurately control the cooling of the frost guiding evaporator 31 by the coolant.

In a third embodiment, as shown in fig. 3, the frost guiding module 3 further has an ice measuring unit 6 disposed on an inner wall of the storage compartment 10, and the ice measuring unit 6 is electrically connected to the control unit 313; the ice measuring unit 6 comprises a thickness measuring sensor which is used for transmitting the icing thickness data on the inner wall of the storage compartment 10 to the control unit 313. It should be noted that in the third embodiment, the frost inducing evaporation circuit and the refrigeration evaporation circuit are also arranged in parallel, and the two circuits share one set of the compressor 21 and the condenser 22. The frost condensation capillary 231 and the frost guiding evaporation coil 311 in the frost guiding evaporation circuit are connected with the refrigeration capillary 232 and the evaporation coil 241 in the refrigeration evaporation circuit in parallel.

When the thickness of the ice on the inner wall of the storage compartment 10 exceeds a first preset value h1, the flow control unit is controlled to open the frost guiding evaporation loop, the secondary refrigerant flowing out of the condenser 22 flows into the frost guiding evaporator 31 at the moment, and the secondary refrigerant provides cold energy for the frost guiding evaporator 31 to reduce the temperature of the surface of the frost guiding evaporator 31.

It should be noted that the fan assembly 4 is controlled to start in the process of controlling the opening of the frost guiding evaporation loop, and the fan 41 of the fan assembly 4 drives the cold energy in the storage compartment 10 to circularly flow between the frost guiding evaporator 31 and the storage compartment 10.

While the coolant is controlled to flow toward the frost evaporator 31, the coolant is simultaneously controlled to close the refrigeration evaporation circuit, i.e., to close the coolant flow toward the refrigeration evaporator 24. When the secondary refrigerant stops flowing towards the refrigeration evaporator of the refrigeration evaporation loop, the temperature of the inner wall of the storage chamber 10 can rise correspondingly, ice on the inner wall of the storage chamber 10 can be changed into water vapor after sublimation, the water vapor flows towards the frost guiding evaporator 31 under the driving of the fan 41, and the water vapor can be selected to frost on the frost guiding evaporator 31 due to the temperature difference between the frost guiding evaporator 31 and the refrigeration evaporator 24, so that the water vapor in the storage chamber 10 is reduced, and the frost on the inner wall of the storage chamber 10 can be eliminated.

Under the continuous effect of leading frost evaporimeter 31, the frost on the storing compartment 10 inner wall melts gradually, and when the thickness of freezing on the storing compartment 10 inner wall reduced to second predetermined value h2, the refrigeration evaporation return circuit of controling once more switches on, thereby the secondary refrigerant who flows out from condenser 22 enters into the refrigeration evaporimeter and supplies cold for storing space 10, can control to lead frost evaporation return circuit and close this moment.

The first predetermined value h1 is 4mm in this embodiment and the second predetermined value h2 is 1mm. The ice measuring unit 6 comprises a thickness measuring sensor arranged on the inner wall of the storage compartment 10.

As shown in fig. 14 to 15, the direct cooling type refrigeration equipment is a horizontal refrigerator, the box body 1 has a rectangular structure, and the thickness measuring sensor is arranged at a corner position of the box body 1 and at a position close to the opening of the storage compartment 10.

The corner position of being close to storing room 10 on box 1 is the position that freezes most easily, especially is close to storing room 10 open-ended position department, because make the outside moist hot air enter into storing space 10 more easily when the switch door in, consequently this position frost that freezes more easily, therefore with thickness measurement sensor setting can more accurate realization regulation and control in this position.

It can be understood that, as shown in fig. 1 to 3, after the frost guide evaporator 31 is frosted seriously, the frost on the frost guide evaporator 31 needs to be removed, otherwise the condensation adsorption of the water vapor in the air by the frost guide evaporator 31 is affected. In order to implement the above solution, the frost guiding module in this embodiment further has a defrosting unit 5, and the defrosting unit 5 is configured to remove frost condensed on the frost guiding evaporator 31; the defrosting unit 5 includes a heating member 51 provided beside the frost guiding evaporator 31.

In the present embodiment, the frost formed on the frost guiding evaporator 31 is heated and removed by the heating element 51, but in other embodiments, the frost on the frost guiding evaporator 31 may also be removed by other methods.

As shown in fig. 7 to 11, the frost guiding module 3 further has a water guide plate 32 disposed at the lower portion of the frost guiding evaporator 31 and a water guide channel 33 communicating the water guide plate 32 with the outside;

the water guide plate 32 is opposite to the frost guide evaporator 31 and is located right below the frost guide evaporator 31, and the defrosting water formed by the heated frost on the frost guide evaporator 31 flows to the water guide plate 32 along the frost guide evaporator 31, is guided to the water guide channel 33 under the action of the water guide plate 32, and finally flows to the outside under the action of the water guide channel 33.

As shown in fig. 7, the water guide channel 33 includes a water inlet 331 disposed on an inner wall of the storage compartment 10 and a water discharge pipe 332 communicated with the water inlet 331, and the water discharge pipe 332 is disposed between the cabinet housing 12 and the inner container 11; the direct cooling refrigeration equipment also comprises a press cabin 13 and a water receiving box 14 arranged in the press cabin 13, and the drain pipe 332 is communicated with the water receiving box 14.

The water receiving tray 332 guides the defrosting water collected and gathered by the water guiding tray 32 to the water receiving box 14 in the press cabin 13 through the water discharging pipe 332, and then the defrosting water in the water receiving box 14 is evaporated under the evaporation of the high-temperature environment in the press cabin 13.

As shown in fig. 8 to 13, the flow guide unit includes a fan assembly 4, the fan assembly 4 includes a fan 41, the frost guiding module 3 further has an air inlet 35 and an air outlet 36 communicated with the storage compartment 10, and an air duct communicating the air inlet 35 and the air outlet 36, the frost guiding evaporator 31 is disposed in the air duct, and the fan 41 is configured to drive air in the storage compartment 10 to flow from the air inlet 35 to the air outlet 36.

The fan 41 controls the air in the storage compartment 10 to circularly flow between the frost guiding evaporator 31 and the storage compartment 10, so that the air in the storage compartment 10 can be better promoted to flow.

The frost guiding module 3 may be directly disposed on the box 1, and in a specific embodiment, the air inlet 35 and the air outlet 36 of the frost guiding module 3 may be disposed on an inner wall of the storage compartment 10, respectively.

In order to better realize the flow of air in the storage compartment 10 in this embodiment, the frost guiding module 3 is disposed in the storage compartment 10 and has a housing 37 fixed on the inner wall of the storage compartment 10, the air inlet 35 and the air outlet 36 are both disposed on the housing 37, and the frost guiding evaporator 31 and the fan 41 are both disposed in the housing 37.

In this embodiment, the frost guiding module 3 is placed in the storage chamber 10 as an independent unit, so that the frost guiding module 3 can be more conveniently arranged.

In the embodiment, the direct-cooling refrigeration equipment is a horizontal refrigerator, the storage compartment 10 is arranged facing the upper opening, and the housing 37 is supported on two opposite inner walls of the storage compartment 10 and extends along the direction of the storage compartment opening to divide the storage compartment 10 into a first compartment 101 and a second compartment 102;

the horizontal refrigerator has a length direction and a width direction, the housing 37 is supported on two inner walls of the storage compartment 10 opposite to each other in the width direction, and the first compartment 101 and the second compartment 102 are arranged in parallel in the length direction.

More preferably, the frost guiding module 3 is arranged at the middle position of the storage compartment 10 in the length direction, so that the arrangement of the structure can efficiently realize that the air in the storage compartment 10 converges towards the frost guiding module 3.

In the present embodiment, the air inlet 35 is simultaneously communicated with the first chamber 101 and the second chamber 102; the air outlet 36 has a first air outlet 361 opening to the first chamber 101 and a second air outlet 362 opening to the second chamber 102;

a gap part 100 is arranged between the bottom of the shell 37 and the bottom of the storage chamber 10, and the gap part 100 is communicated with the first chamber 101 and the second chamber 102; the air inlet 35 is provided at the bottom of the housing 37 and opens toward the gap portion 100.

The gap portion 100 is provided to enable the first compartment 101 and the second compartment 102 to communicate with each other, thereby more efficiently collecting the air in the first compartment 101 and the air in the second compartment 102 into the frost guide module 3.

As shown in fig. 11, in the present embodiment, the housing 37 includes a base 371 and a cover 372 engaged with the base 371, and the frost guiding module 3 has a wind guiding member 38 disposed between the base 371 and the cover 372;

the air guide 38 has an air guide body 381 and a communication hole provided in the air guide body 381; the air guide body 381 divides the inside of the casing 37 into an air inlet cavity 373 communicated with the air inlet 35 and an air outlet cavity 374 communicated with the air outlet 36; the communication hole is communicated with the air inlet cavity 373 and the air outlet cavity 374; the frost inducing evaporator 31 is arranged in the air inlet chamber 373.

Fan 41 is turbo fan and has axial air inlet side and radial air-out side, fan subassembly 4 still has the spiral case, turbo fan 41 sets up in the spiral case, the spiral case is fixed base 371 is last and has axial air intake and radial air outlet, the axial air intake with axial air inlet side position is relative, radial air outlet with radial air-out side position is relative.

A ventilation gap is formed between the axial air inlet and the cover plate 372, the axial air inlet is exposed towards the air inlet cavity 373, the frost guiding evaporator 31 is arranged in the shell 37 and close to the cover plate 372, the frost guiding evaporator 31 is arranged on the lower side of the ventilation gap, and the arrangement of the structure can better enable air sucked from the air inlet 35 in the storage compartment 10 to pass through the frost guiding evaporator 31.

Further, as shown in fig. 13, an air guiding partition plate 39 is further disposed between the frost guiding evaporator 31 and the base 371, two sides of the air guiding partition plate 39 are respectively and fixedly attached to the frost guiding evaporator 31 and the base 371, and the arrangement of the air guiding partition plate 39 enables the cold energy to be more sufficiently contacted with the heat conducting fins 312 on the frost guiding evaporator 31, so that more moist hot air in the storage compartment 10 is condensed and gathered on the frost guiding evaporator 31. The air guide partition plate 39 can be a foam piece or a rubber piece, and has certain elastic deformation, so that the air guide partition plate is better fixed and attached to the base 371.

Air guide 38 is for pressing from both sides tight location base 371 with foam or rubber spare between the apron 372, air guide 38 have certain elastic deformation, the fixed laminating of realization air guide 38 that the setting of structure can be better and base 371 like this, also can realize the fixed laminating between air guide 38 and the apron 372 simultaneously.

The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.

Claims (14)

1. A direct-cooling refrigeration equipment is characterized in that: the refrigerator comprises a box body with a storage compartment, a door body arranged on the box body and used for opening or closing an opening of the storage compartment, a refrigerating unit and a frost guiding module; the refrigerating unit comprises a compressor, a condenser, a throttling device and a refrigerating evaporator which are sequentially connected;

the defrosting module comprises a defrosting evaporator and a flow guide unit, the flow guide unit is used for driving air in the storage chamber to circularly flow between the defrosting evaporator and the storage chamber, and when the air flows through the defrosting evaporator, water vapor in the air is condensed on the defrosting evaporator.

2. The direct cooling type refrigerating apparatus as claimed in claim 1, wherein: the box body comprises a cabinet shell and an inner container arranged on the cabinet shell, and the refrigeration evaporator comprises an evaporation coil wound outside the inner container;

the frost guiding evaporator comprises a frost guiding evaporator, and the frost guiding evaporator is provided with a frost guiding evaporation coil communicated with the evaporation coil and a heat conduction fin arranged on the frost guiding evaporation coil.

3. The direct cooling type refrigerating apparatus as claimed in claim 2, wherein: the defrosting evaporation coil is connected with the evaporation coil in series, and the defrosting evaporation coil is arranged between the evaporation coil and the throttling device.

4. The direct cooling type refrigerating apparatus as claimed in claim 2, wherein: draw the frost evaporating coil with evaporating coil sets up in parallel, throttling arrangement include with draw the frost evaporating coil establish ties the frost capillary that sets up and with the refrigeration capillary that evaporating coil establishes ties the setting, the cross sectional dimension of frost capillary is less than the cross sectional dimension of refrigeration capillary.

5. The direct cooling type refrigerating apparatus as claimed in claim 4, wherein: the frost guiding module is also provided with a control unit, and the control unit comprises a flow control piece which is used for controlling the secondary refrigerant flowing out of the condenser to flow to the refrigerating capillary or the frost condensing capillary.

6. The direct cooling type refrigerating apparatus as claimed in claim 5, wherein: the frost guiding module is also provided with an ice measuring unit arranged on the inner wall of the storage chamber, and the ice measuring unit is electrically connected with the control unit; the ice measuring unit comprises a thickness measuring sensor, and the thickness measuring sensor is used for transmitting the icing thickness data on the inner wall of the storage room to the control unit.

7. The direct cooling refrigeration equipment as claimed in claim 6, wherein: the direct cooling type refrigeration equipment is a horizontal refrigerator, the box body is of a rectangular structure, and the thickness measuring sensor is arranged at the corner position of the box body and is positioned close to the opening of the storage compartment.

8. The direct cooling type refrigerating apparatus as claimed in claim 2, wherein: the defrosting unit is used for removing frost formed by condensation on the frost guiding evaporator; the defrosting unit comprises a heating element arranged beside the defrosting evaporator.

9. The direct cooling refrigeration equipment as claimed in claim 8, wherein: the frost guiding module is also provided with a water guide disc arranged at the lower part of the frost guiding evaporator and a water guide channel communicated with the water guide disc and the outside;

the water guide channel comprises a water inlet and a drain pipe, the water inlet is formed in the inner wall of the storage compartment, the drain pipe is communicated with the water inlet, and the drain pipe is arranged between the cabinet shell and the inner container; the direct-cooling refrigeration equipment is also provided with a press bin and a water receiving box arranged in the press bin, and the drain pipe is communicated with the water receiving box.

10. The direct cooling type refrigerating apparatus as claimed in any one of claims 1 to 9, wherein: the flow guide unit comprises a fan, the frost guide module is further provided with an air inlet and an air outlet communicated with the storage chamber and an air channel communicated with the air inlet and the air outlet, the frost guide evaporator is arranged in the air channel, and the fan is used for driving air in the storage chamber to flow from the air inlet to the air outlet.

11. The direct cool refrigeration equipment as claimed in claim 10, wherein: draw the frost module setting to be in indoor and having the fixing of storing room indoor wall on the casing, the air intake with the air outlet all sets up on the casing, draw the frost evaporimeter with the fan all sets up in the casing.

12. The direct cool refrigeration equipment as claimed in claim 11, wherein: the direct-cooling refrigeration equipment is a horizontal refrigerator, the storage chamber is arranged with an upward opening, and the shell is supported on two opposite inner walls of the storage chamber and extends along the direction of the opening of the storage chamber to divide the storage chamber into a first chamber and a second chamber;

the horizontal refrigerator is provided with a length direction and a width direction, the shell is supported on two inner walls of the storage chamber in the width direction, and the first chamber and the second chamber are arranged in parallel in the length direction.

13. The direct cool refrigeration equipment as claimed in claim 12, wherein: the air inlet is communicated with the first chamber and the second chamber simultaneously; the air outlet is provided with a first air outlet arranged towards the opening of the first chamber and a second air outlet arranged towards the opening of the second chamber;

a gap part is arranged between the bottom of the shell and the bottom of the storage chamber and is communicated with the first chamber and the second chamber; the air inlet is arranged at the bottom of the shell and is arranged towards the opening of the gap part.

14. The direct-cooling refrigeration equipment as claimed in claim 11, wherein: the shell comprises a base and a cover plate matched with the base, and the frost guiding module is provided with an air guide piece arranged between the base and the cover plate;

the air guide piece is provided with an air guide body and a communication hole arranged on the air guide body; the air guide body divides the shell into an air inlet cavity communicated with the air inlet and an air outlet cavity communicated with the air outlet; the communicating hole is communicated with the air inlet cavity and the air outlet cavity; the frost guiding evaporator is arranged in the air inlet cavity.

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