CN220017867U - Refrigerating apparatus - Google Patents

Abstract

The utility model relates to the technical field of refrigeration, and discloses refrigeration equipment which comprises a plurality of setting areas easy to freeze, and the refrigeration equipment further comprises: a power supply; the heating group comprises N heating parts which are respectively arranged in a plurality of setting areas and are connected with each other to form a passage; a power supply switch connected in series with the power supply and the heating group; wherein the first set value N is an integer greater than 1. The heating parts of the setting areas are connected together in a serial or parallel mode to be regarded as a heating group, and then are connected with a power supply, and the control of the heating group switch is realized through the power supply switch. Therefore, the control of the heating parts can be realized by only one power supply end and one control end, the plugging lines are reduced, the error-preventing difficulty is reduced, and the operation reliability is improved.

Description

Refrigerating apparatus

Technical Field

The utility model relates to the technical field of refrigeration, for example to refrigeration equipment.

Background

The refrigerator is used as one of the indispensable household appliances in the family life, and the refrigerating system is used for refrigerating the refrigerating chamber and the freezing chamber in the refrigerator to keep food fresh. In the actual use process, the problems of uneven internal heat distribution and partial regional icing often occur, the refrigeration effect of the refrigerator is adversely affected, and meanwhile, the energy consumption of the refrigerator is increased.

In the related art, independent heating parts and power supply ends are arranged in each region of the refrigerator, which is easy to freeze, and when the target region needs to be subjected to anti-icing operation, power is supplied to the heating parts in the target region, so that the heating parts in the target region are heated in a running mode.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the heating parts of all the areas are mutually independent, a power supply end and a control end are required to be arranged independently, and the number of connectors is excessive, so that the error-proof difficulty of multi-area anti-icing operation is greatly increased, and the reliability of operation is reduced.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a refrigeration device, so that connectors are reduced when the refrigeration device performs anti-icing operation on a plurality of areas, thereby reducing error-proofing difficulty and improving operation reliability.

In some embodiments, the refrigeration appliance includes a plurality of ice prone set areas, the refrigeration appliance further including: a power supply; the heating group comprises N heating parts which are respectively arranged in a plurality of setting areas and are connected with each other to form a passage; a power supply switch connected in series with the power supply and the heating group; a short-circuit switch connected in parallel with the M heating parts and provided with one or more; wherein the first set value N is an integer greater than 1, and the second set value M is an integer greater than 0 and less than N.

Optionally, the short-circuit switch includes: one or more first-stage short-circuit switches are arranged, and each first-stage short-circuit switch is connected with 1 heating part in parallel; and/or, two-stage short-circuit switches, which are provided with one or more, and each two-stage short-circuit switch is connected with the P heating parts in parallel; wherein the third set value P is an integer greater than 1 and less than N.

Optionally, in the case that the heating group includes a first heating portion, a second heating portion, and a third heating portion, and the first heating portion, the second heating portion, and the third heating portion are sequentially connected in series, the short-circuit switch includes: one or more of the first, second, and third stage shorting switches; wherein, the first one-level short-circuit switch is connected with the first heating part in parallel; the second-stage short-circuit switch is connected with the second heating part in parallel; and the third-stage short-circuit switch is connected with the third heating part in parallel.

Optionally, the short-circuit switch further includes: a first secondary short-circuit switch connected in parallel with the first heating portion and the second heating portion; and/or a second-stage short-circuit switch is connected in parallel with the second heating part and the third heating part.

Optionally, in the case that the heating group includes heating parts connected in parallel, the refrigeration apparatus further includes: and the circuit breaker is provided with one or more than one circuit breaker which is connected in series with the heating part which is partially or totally in parallel circuit. Optionally, in the case that the heating group includes a first heating portion, a second heating portion, and a third heating portion, and the first heating portion and the second heating portion are connected in series, and the third heating portion is connected in parallel with the second heating portion, the short-circuit switch includes: a fourth-stage short-circuit switch connected in parallel with the first heating part; and a fifth-stage short-circuit switch connected with the second heating part in parallel.

Optionally, the circuit breaker includes: a first cut-off switch connected in series with the third heating part; and/or a second disconnecting switch is connected in series with the second heating part, and the fifth-stage short-circuit switch is connected in parallel with the second disconnecting switch and two sides of the second heating part.

Optionally, in the case that the heating group further includes a fourth heating part and a fifth heating part, the short-circuit switch further includes: a sixth-stage short-circuit switch connected in parallel with the fourth heating part; and a seventh-stage short-circuit switch connected in parallel with the fifth heating part.

Optionally, the power supply switch includes: and a relay.

The refrigerating equipment provided by the embodiment of the disclosure can realize the following technical effects:

the heating parts of the setting areas are connected together in a serial or parallel mode to be regarded as a heating group, then are connected with a power supply source, and the control of the heating group switch is realized through a power supply switch. Therefore, the control of the heating parts can be realized by only one power supply end and one control end, the plugging lines are reduced, the error-preventing difficulty is reduced, and the operation reliability is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the utility model.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic structural view of a refrigeration apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another refrigeration appliance provided by an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of another refrigeration appliance provided by an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of another refrigeration appliance provided by an embodiment of the present disclosure;

fig. 5 is a schematic structural view of another refrigeration apparatus provided in an embodiment of the present disclosure;

fig. 6 is a schematic structural view of another refrigeration apparatus provided by an embodiment of the present disclosure;

fig. 7 is a schematic structural view of another refrigeration apparatus provided by an embodiment of the present disclosure;

fig. 8 is a schematic structural view of another refrigeration apparatus provided in an embodiment of the present disclosure.

Reference numerals:

10: a power supply;

20: a heating group; 21: a first heating section; 22: a second heating section; 23: a third heating section; 24: a fourth heating section; 25: a fifth heating section;

30: a power supply switch;

411: a first primary shorting switch; 412: a second-stage short-circuit switch; 413: a third-stage short-circuit switch; 414: a fourth-stage short-circuit switch; 415: a fifth level short circuit switch; 416: a sixth-stage short-circuit switch; 417: a seventh level short circuit switch; 421: a first-stage short-circuit switch;

511: a first circuit breaker; 512: and a second cut-off switch.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

In the practical use process, the problems of uneven internal heat distribution and partial regional icing of refrigeration equipment such as a refrigerator often occur, the refrigeration effect is adversely affected, and meanwhile, the energy consumption is increased. In the related art, heating parts are arranged in all areas of the refrigerator, which are easy to freeze, and the heating parts are controlled to be started or closed according to the icing condition, so that the anti-icing of all areas of the refrigerator is realized. However, the heating portions of the respective regions are independently controlled. The heating part of each area needs to be provided with a power supply end and a control end independently, and the number of connectors is excessive, so that the difficulty of error prevention is greatly increased, and the reliability of system operation is further reduced.

To solve the above problems, with reference to fig. 1, an embodiment of the present disclosure provides a refrigeration apparatus, including: a power supply 10, a heating group 20 and a power supply switch 30.

Wherein the supply voltage of the power supply 10 may be 12V.

The heating group 20 includes N heating portions provided in a plurality of setting areas, respectively, and heats the corresponding setting areas to thereby implement deicing. The heating parts are connected with each other to form a passage, and the connection mode is serial connection and/or parallel connection. Wherein the first set value N is an integer greater than 1.

The power supply switch 40, the power supply 10 and the heating group 20 are connected in series to form a loop.

By adopting the refrigeration equipment provided by the embodiment of the disclosure, the heating parts of all the setting areas are connected together in a serial or parallel mode, and are regarded as a heating group, then are connected with a power supply, and the control of the heating group switch is realized through the power supply switch. Therefore, the control of the heating parts can be realized by only one power supply end and one control end, the plugging lines are reduced, the error-preventing difficulty is reduced, and the operation reliability is improved.

Optionally, the power switch comprises a relay.

Optionally, the heating portion includes a heating sheet or a heating wire.

Optionally, the refrigeration device further comprises a shorting switch. The short-circuit switch is connected with the M heating parts in parallel, and when the short-circuit switch is closed, the M heating parts connected with the short-circuit switch in parallel are all short-circuited and cannot be heated in operation, so that the heating parts are closed. The shorting switch may be set to one or more as the case may be.

Wherein the second set value M is an integer greater than 0 and less than N. That is, the number of heating sections connected in parallel to the short-circuit switch is at least 1, and the total number of heating sections in the heating group must not be reached at most. In this way, it is possible to avoid that all the heating portions are short-circuited to cause line damage.

Further, the short-circuit switches may be classified according to the number of heating parts to which the short-circuit switches are connected in parallel. Optionally, the shorting switch includes: a primary short-circuit switch and a secondary short-circuit switch. The first-stage switch is connected with one short-circuit switch in parallel, and the second-stage short-circuit switch is connected with the P heating parts in parallel. P is an integer greater than 1 and less than N.

Optionally, the refrigeration device further comprises a protection resistor connected in series with the power supply to reduce the risk of damage to the power supply caused by system failure.

By way of example, the setting of the short-circuit switch is further explained below.

As shown in fig. 2, in the case where the heating group includes two heating sections of the first heating section 21 and the second heating section 22, and the first heating section 21 and the second heating section 22 are connected in series, 1 or 2 short-circuit switches may be provided, which are all primary short-circuit switches. If one is provided, it is provided in parallel with the first heating portion 21 or in parallel with the second heating portion 22. Control of the first heating portion 21 or the second heating portion 22 is achieved by controlling the short-circuit switch to be turned on or off. If two are provided, one is provided in parallel with the first heating portion 21, and the other is provided in parallel with the second heating portion 22. In this way, independent control of the first heating portion 21 and the second heating portion 22 can be achieved by controlling the short-circuit switch to be turned on or off.

As shown in fig. 3, in the case where the heating group includes three heating sections of the first heating section 21, the second heating section 22, and the third heating section 23, and the first heating section 21, the second heating section 22, and the third heating section 23 are sequentially connected in series, the short-circuit switch includes: one or more of the first primary shorting switch 411, the second primary shorting switch 412, and the third primary shorting switch 413.

The first heating portion 21 is configured to be controlled to heat a first area in the refrigeration appliance. The second heating portion 22 is configured to be controlled to heat a second region in the refrigeration appliance. The third heating section 23 is configured to be controlled to heat a third region in the refrigeration appliance.

When the power supply switch 30 is turned off, the current circuit is turned off, and the power supply 10 no longer supplies power to the respective heating sections, that is, the first heating section 21, the second heating section 22, and the third heating section 23 are all in the off state.

When the power supply switch 30 is closed, if the first primary short-circuit switch 411 is closed, the first heating portion 21 is short-circuited, and the operation heating is stopped; if the second-stage short-circuit switch 412 is closed, the second heating portion 22 is short-circuited, and the operation heating is stopped; when the third-stage short-circuit switch 413 is closed, the third heating unit 23 is short-circuited, and the operation heating is stopped.

It can be seen that the switching of the heating state in the circuit can be achieved by controlling the power switch 30, the first primary short-circuit switch 411, the second primary short-circuit switch 412 and the third primary short-circuit switch 413.

Further, as further shown with continued reference to fig. 3, the shorting switch further includes: first secondary shorting switch 421 and/or a second secondary shorting switch. The first secondary short-circuit switch 421 is connected in parallel with the first heating portion 21 and the second heating portion 22. A second-stage short-circuit switch (not shown) is connected in parallel with the second heating section 22 and the third heating section 23. Therefore, when the first heating part, the second heating part and the third heating part are required to be turned off, the first secondary short-circuit switch is only required to be controlled to be turned on. When the second heating part and the third heating part are required to be closed and the first heating part is required to be opened, the second-stage short-circuit switch is only required to be controlled to be closed. The arrangement of the secondary short-circuit switch is beneficial to simplifying the control process and improving the reliability of the system.

With reference to fig. 2 and 3, it can be seen that, in the case that a plurality of heating plates are sequentially connected in series, the heating plates can be controlled by connecting the short-circuit switches in parallel to both sides of the heating plates, so as to avoid simultaneous switching of all the heating plates. If a primary short-circuit switch is arranged, the switch control of a single heating part can be realized. For example, in the case shown in fig. 4, the heating group includes a first heating unit 21, a second heating unit 22, a third heating unit 23, and a fourth heating unit 24, which are sequentially connected in series, and the switching of the switching states of the heating units is achieved by connecting a plurality of primary short-circuit switches in parallel. Further, if the number of the first-stage short-circuit switches reaches the total number of the heating parts, independent switch control of all the heating parts can be realized. If the secondary short-circuit switch is arranged, the switch control of a plurality of heating parts can be realized, and the arrangement of the secondary short-circuit switch has the effect of simplifying the control.

Optionally, in case the heating group comprises heating sections connected in parallel, the refrigeration apparatus further comprises a cut-off switch. The short-circuit switch is connected in series with the heating portion partially or entirely in the parallel circuit. One or more may be provided depending on the actual requirements.

Here, an exemplary description is made of a case of heating portions having a parallel relationship.

With reference to fig. 5, a case will be described in which three heating portions are provided and there is a parallel connection relationship between the heating portions. In the case where the heating group includes the first heating portion 21, the second heating portion 22, and the third heating portion 23, and the first heating portion 21 and the second heating portion 22 are connected in series, and the third heating portion 23 and the second heating portion 22 are connected in parallel, the short-circuit switch includes: a fourth stage shorting switch 414 and a fifth stage shorting switch 415.

Wherein, the fourth stage short-circuit switch 414 is connected in parallel with the first heating portion 21. The fifth-stage short-circuit switch 415 is connected in parallel with the second heating portion 22. When the fourth-stage short-circuit switch 414 is closed, the first heating portion 21 is short-circuited, and the operation is stopped. When the fifth-stage short-circuit switch 415 is closed, both the second heating portion 22 and the third heating portion 23 are short-circuited, and the operation is stopped. Therefore, the switching of the operation state of the heating part is realized, so that the operation state of the heating group is not limited to the two states of full opening or full closing, and the flexibility of the system operation is improved.

Optionally, the refrigeration device is further provided with a circuit breaker.

Optionally, the circuit breaker comprises: the first cut-off switch 511. The first cut-off switch 511 is connected in series with the third heating portion 23. In this way, when the first cut-off switch 511 is turned off, the third heating unit 23 is turned off. It can be seen that setting up first circuit breaker can realize the independent control of third heating portion, realizes that first heating portion and second heating portion open, and the control demand of third heating portion keep the off state simultaneously.

Optionally, the circuit breaker comprises: a second disconnect switch 512. The second cut-off switch 512 is connected in series with the second heating portion, and the fifth level short-circuit switch 415 is connected in parallel to both sides of the second cut-off switch 512 and the second heating portion 22. In this way, when the second cut switch 512 is turned off, the second heating portion 22 is turned off. The second circuit breaker is arranged to realize independent control of the second heating part, so that the control requirements that the first heating part and the third heating part are opened and the second heating part is kept in a closed state are met.

In the case where the heating group includes the first heating portion 21, the second heating portion 22, and the third heating portion 23, and the first heating portion 21 and the second heating portion 22 are connected in series, and the third heating portion 23 and the second heating portion 22 are connected in parallel, if the fourth-stage short-circuit switch 414, the fifth-stage short-circuit switch 415, the first cut-off switch 511, and the second cut-off switch 512 are provided at the same time, independent control of all the heating portions can be achieved.

Specifically, when the power supply switch 30 is turned off, the power supply circuit fails to supply power to the respective heating portions, and all the heating portions are in a stopped state.

With the power switch 30 closed:

if the fifth-stage short-circuit switch 415 is closed and the fourth-stage short-circuit switch 414, the first cut-off switch 511, and the second cut-off switch 512 are all opened, only the first heating portion 21 is in the on-state, and heating is operated.

When the fourth-stage short-circuit switch 414 and the second cut-off switch 512 are closed and the fifth-stage short-circuit switch 415 and the first cut-off switch 511 are opened, only the second heating unit 22 is in the on-state, and heating is operated.

When the fourth-stage short-circuit switch 414 and the first cut-off switch 511 are closed and the fifth-stage short-circuit switch 415 and the second cut-off switch 512 are opened, only the third heating unit 23 is in the on-state, and heating is operated.

If only the second cut switch 512 is closed and the fourth stage short switch 414, the fifth stage short switch 415, and the first cut switch 411 are opened, the first heating portion 21 and the second heating portion 22 are in a pass state, and heating is operated.

If only the first cut switch 511 is closed and the fourth stage short switch 414, the fifth stage short switch 415, and the second cut switch 512 are opened, the first heating portion 21 and the third heating portion 23 are in a pass state, and heating is operated.

If the fourth-stage short-circuit switch 414, the first cut-off switch 511, and the second cut-off switch 512 are closed and the fifth-stage short-circuit switch 415 is opened, the second heating portion 22 and the third heating portion 23 are in a passage state, and heating is operated.

If the first and second cut-off switches 511 and 512 are closed and the fourth and fifth first-stage short-circuit switches 414 and 415 are opened, the first, second and third heating portions 21, 22 and 23 are all in a pass state, and heating is operated.

If the fourth-stage short-circuit switch 414 and the fifth-stage short-circuit switch 415 are simultaneously closed, the first heating portion 21, the second heating portion 22, and the third heating portion 23 are all short-circuited.

It can be seen that by controlling the on/off states of the fourth stage short circuit switch 414, the fifth stage short circuit switch 415, the first cut-off switch 511, and the second cut-off switch 512, individual switching control of any one or any combination of the first heating section 21, the second heating section 22, and the third heating section 23 can be achieved.

On the other hand, as shown in fig. 6, if the heating group includes the first heating portion 21, the second heating portion 22, the third heating portion 23, and the fourth heating portion 24, the first heating portion 21, the second heating portion 22, the third heating portion 23, and the open switch and the short switch may be provided as described above, so that independent control is achieved. In the case of needing to independently control the fourth heating part, only one first-stage short-circuit switch is connected in parallel to two ends of the fourth heating part 24.

Further, as shown in fig. 7, if the heating group includes the first heating portion 21, the second heating portion 22, the third heating portion 23, the fourth heating portion 24, and the fifth heating portion 25, the first heating portion 21, the second heating portion 22, and the third heating portion 23 may be configured as described above, so that independent control is achieved.

Optionally, the refrigeration device further comprises: a sixth stage shorting switch 416 and a seventh stage shorting switch 417. Wherein, the sixth stage short-circuit switch 416 is connected in parallel with the fourth heating portion 24. The seventh-stage short-circuit switch 417 is connected in parallel to the fifth heating portion 25. Thus, when the sixth-stage short-circuit switch 416 is closed, the fourth heating portion 24 is short-circuited, and the operation is stopped. When the seventh-stage short-circuit switch 417 is closed, the fifth heating portion 25 is short-circuited, and the operation is stopped. Independent control of the fourth heating part and the fifth heating part is realized. Therefore, the connectors are reduced, the error-proof difficulty is reduced, the running reliability of the system is improved, and meanwhile, the independent control of each heating part is realized.

Further, in the case where the refrigeration apparatus has more heating portions, the setting may be made with reference to the above-described scheme.

For example, if the number of heating portions n=3n (N is an integer), all the heating portions may be divided into N groups, the heating portions of each group may be arranged in a manner as shown with reference to fig. 5, and then the N groups may be sequentially connected in series.

If the number of heating units is 3n+1, the remaining heating units are connected in series in the power supply circuit on the premise of setting the 3n heating units, and a short-circuit switching device is provided in parallel with the remaining heating units.

If the number of heating parts is 3n+2, as shown in fig. 8, on the premise of setting the 3N heating parts, the remaining two heating parts are connected in series in the power supply loop, and two short-circuit switch devices are respectively arranged in parallel with the remaining heating parts one by one. Therefore, not only can all heating parts be connected in the same circuit to realize unified control and reduce the difficulty of error prevention, but also can realize independent control of all heating parts and improve the flexibility of control, thereby meeting the actual heating requirement.

Alternatively, both the disconnect switch and the shorting switch may be relays. The type of the relay is determined according to the type of the heating part. The type of the relay is determined according to rated voltage, rated power and rated current of the heating part, so that the relay can bear load and the circuit is prevented from tripping.

For example, if the rated voltage of the heating portion is DC220V, the rated power is 100W, and the rated current is 0.5A, the relay type may be G5NB-1A-E-250V-5A. If the rated voltage of the heating portion is DC220V, the rated power is 180W, and the rated current is 0.7A, the relay type may be G5NB-1A-E-250V-5A. If the rated voltage of the heating section is AC12V, the rated power is 20W, and the rated current is 1.7A, the relay type may be G5NB-1A-E-SP DC12. If the rated voltage of the heating portion is AC12V, the rated power is 12W, and the rated current is 1A, the relay type may be G5NB-1A-E-SP DC12.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. A refrigeration appliance including a plurality of ice prone setting areas, said refrigeration appliance comprising:

a power supply (10);

a heating group (20) including N heating portions, the N heating portions being respectively provided in the plurality of setting regions, and the N heating portions being connected to each other to form a passage;

a power supply switch (30) connected in series with the power supply source (10) and the heating group (20);

a short-circuit switch connected in parallel with the M heating parts and provided with one or more; wherein the first set value N is an integer greater than 1, and the second set value M is an integer greater than 0 and less than N.

2. The refrigeration appliance of claim 1 wherein the shorting switch includes:

one or more first-stage short-circuit switches are arranged, and each first-stage short-circuit switch is connected with 1 heating part in parallel; and/or the number of the groups of groups,

the two-stage short-circuit switches are provided with one or more, and each two-stage short-circuit switch is connected with the P heating parts in parallel;

wherein the third set value P is an integer greater than 1 and less than N.

3. A refrigerating apparatus according to claim 2, wherein in the case where the heating group includes a first heating portion (21), a second heating portion (22), and a third heating portion (23), and the first heating portion (21), the second heating portion (22), and the third heating portion (23) are connected in series in this order, the short-circuit switch includes: one or more of a first-stage short-circuit switch (411), a second-stage short-circuit switch (412), and a third-stage short-circuit switch (413);

wherein a first primary short-circuit switch (411) is connected in parallel with the first heating section (21);

a second-stage short-circuit switch (412) connected in parallel with the second heating section (22);

and a third-stage short-circuit switch (413) connected in parallel with the third heating unit (23).

4. A refrigeration unit as recited in claim 3 wherein said shorting switch further comprises:

a first secondary short-circuit switch (421) connected in parallel with the first heating section (21) and the second heating section (22); and/or the number of the groups of groups,

and a second-stage short-circuit switch connected in parallel with the second heating part (22) and the third heating part (23).

5. The refrigeration appliance of claim 2 wherein, in the case where the heating group includes heating portions connected in parallel, the refrigeration appliance further includes:

and the circuit breaker is provided with one or more than one circuit breaker which is connected in series with the heating part which is partially or totally in parallel circuit.

6. A refrigerating apparatus according to claim 5, wherein in the case where the heating group includes a first heating portion (21), a second heating portion (22), and a third heating portion (23), and the first heating portion (21) and the second heating portion (22) are connected in series, and the third heating portion (23) is connected in parallel with the second heating portion (22), the short-circuit switch includes:

a fourth-stage short-circuit switch (414) connected in parallel with the first heating unit (21);

a fifth-stage short-circuit switch (415) is connected in parallel with the second heating section (22).

7. The refrigeration appliance of claim 6 wherein said circuit breaker includes:

a first cut-off switch (511) connected in series with the third heating section (23); and/or the number of the groups of groups,

and a second circuit breaker (512) connected in series with the second heating part (22), and the fifth-stage short circuit switch (415) is connected in parallel to both sides of the second circuit breaker (512) and the second heating part (22).

8. A refrigerating apparatus according to claim 6, wherein, in the case where the heating group further includes a fourth heating portion (24) and a fifth heating portion (25), the short-circuit switch further includes:

a sixth-stage short-circuit switch (416) connected in parallel with the fourth heating section (24);

a seventh-stage short-circuit switch (417) connected in parallel to the fifth heating unit (25).

9. The refrigeration appliance of any one of claims 1 to 8 wherein the power switch includes: and a relay.