CN215597858U - Refrigerating device - Google Patents

Abstract

The utility model provides a refrigerating device, which comprises a temperature-changing chamber and a refrigerating system, wherein the refrigerating system comprises a compressor, a condenser and a refrigerating branch which are mutually connected to form a refrigerating circuit; the refrigerating device also comprises a heat pipe and an electromagnetic valve for controlling the on-off of the heat pipe, wherein the evaporation section of the heat pipe is arranged close to the condenser, and the condensation section of the heat pipe is in contact with the variable-temperature liner of the variable-temperature chamber; the design can effectively utilize waste heat of the condenser, and can reduce power consumption of the temperature-changing chamber when full temperature change is realized compared with a scheme of simply adopting an auxiliary heating wire, and the energy-saving and efficient effect is achieved.

Description

Refrigerating device

Technical Field

The utility model relates to the field of refrigerating devices, in particular to a refrigerating device with a good energy-saving effect.

Background

Along with the development of society, the diversification and individuation requirements of people on food storage in the household life are more and more strong, so that a refrigerator with a temperature-variable chamber is produced, and the temperature in the temperature-variable chamber of the refrigerator can be independently adjusted to meet the requirements of users on storing various articles.

The existing refrigerator is generally provided with a heating wire in a temperature changing chamber, when the temperature changing chamber is switched from a freezing mode to a refrigerating mode, the heating wire is started to provide heat for the temperature changing chamber, the heating speed of the heating wire is high, so that the temperature fluctuation in the temperature changing chamber is large, the temperature difference of each area in the temperature changing chamber is also large, meanwhile, the potential safety hazard is increased, and the power consumption is increased.

Chinese utility model patent application No. CN105698463A discloses a refrigerator, comprising a first temperature-changing chamber and a refrigerating system, wherein the refrigerating system comprises a compressor, a condenser, an evaporator, a condensing heating pipe, a connecting pipeline and a switching device, the condensing heating pipe is located in the first temperature-changing chamber, the switching device is configured to be switchable between a first switching position for communicating an exhaust port and the condensing heating pipe and a second switching position for communicating the exhaust port and the connecting pipeline, when the temperature of the first temperature-changing chamber is lower than a preset temperature, the switching device is switched to the first switching position, the exhaust port of the compressor is communicated with the condensing heating pipe, at this time, a high-temperature high-pressure gaseous refrigerant enters the condensing heating pipe from the exhaust port of the compressor and releases heat and liquefies in the condensing heating pipe, at this time, the heat in the high-temperature high-pressure gaseous refrigerant can be released into the first temperature-changing chamber, so that the temperature in the first temperature-changing chamber rises to reach the preset temperature, the condensing heating pipe is used for replacing the traditional heating wire, so that the temperature fluctuation in the first temperature changing chamber is effectively reduced, and the energy consumption is greatly reduced. However, when the temperature of the first temperature-changing chamber needs to be raised, the refrigeration system needs to be started, although heat can be provided for the first temperature-changing chamber, the loss of the cooling capacity generated by the evaporator can be caused, and meanwhile, the compressor is damaged easily due to frequent starting and stopping of the compressor.

In view of the above, it is desirable to provide a new refrigeration device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a refrigerating device with a good energy-saving effect.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: a refrigerating device comprises a temperature-changing chamber and a refrigerating system, wherein the refrigerating system comprises a compressor, a condenser and a refrigerating branch which are connected with each other to form a refrigerating circuit; the refrigerating device also comprises a heat pipe and an electromagnetic valve for controlling the on-off of the heat pipe, wherein the evaporation section of the heat pipe is arranged close to the condenser, and the condensation section of the heat pipe is in contact with the variable-temperature liner of the variable-temperature chamber.

As a further improved technical scheme of the utility model, the heat pipe also comprises a connecting section for connecting the evaporation section and the condensation section, and the electromagnetic valve is arranged at the connecting section.

As a further improved technical scheme of the utility model, the condenser is connected with the evaporation section of the heat pipe in parallel.

As a further improved technical scheme of the utility model, the refrigerating device also comprises a condensing fan, and the evaporation section of the heat pipe is positioned on the air outlet side of the condenser.

As a further improved technical scheme of the utility model, the evaporation section of the heat pipe is fixed on the condenser.

As a further improved technical scheme of the utility model, the condensation section of the heat pipe is attached to the temperature-changing liner.

As a further improved technical scheme of the utility model, the refrigerating device also comprises an auxiliary heating wire attached to the temperature-changing liner.

As a further improved technical scheme of the utility model, the temperature-changing chamber comprises a first temperature-changing chamber and a second temperature-changing chamber, and the refrigeration branch comprises a temperature-changing evaporator for providing cold energy for the first temperature-changing chamber and the second temperature-changing chamber; the refrigerating device further comprises a first variable temperature air channel and a second variable temperature air channel which respectively convey the cold energy generated by the variable temperature evaporator to the first variable temperature chamber and the second variable temperature chamber, wherein a first variable temperature air door is arranged in the first variable temperature air channel, and a second variable temperature air door is arranged in the second variable temperature air channel.

As a further improved technical scheme of the utility model, the refrigerating device further comprises a freezing chamber and a refrigerating chamber, the refrigerating branch further comprises a two-way valve connected with the outlet end of the condenser, a first connecting pipeline connected with the temperature-changing branch in parallel, and a freezing branch connected with the outlet ends of the temperature-changing branch and the first connecting pipeline, and the first connecting pipeline and the temperature-changing branch are respectively connected with two outlet ends of the two-way valve; the refrigerating device also comprises a refrigerating air channel for conveying the cold energy generated by the freezing branch to the refrigerating chamber, a refrigerating air door arranged in the refrigerating air channel and a freezing air channel for conveying the cold energy generated by the freezing branch to the refrigerating chamber.

As a further improved technical scheme of the utility model, the refrigeration device further comprises a freezing chamber and a refrigerating chamber, the refrigeration branch further comprises a three-way valve connected with the outlet end of the condenser, a refrigeration branch and a second connecting pipeline which are connected in parallel with the temperature changing branch, and a freezing branch connected with the outlet ends of the temperature changing branch, the refrigeration branch and the second connecting pipeline, and the temperature changing branch, the refrigeration branch and the second connecting pipeline are respectively connected with three outlet ends of the three-way valve.

The utility model has the beneficial effects that: the refrigerating device is internally provided with the heat pipe for transmitting the heat of the condenser to the temperature-changing chamber, the design can effectively utilize the waste heat of the condenser, and compared with a scheme of simply adopting an auxiliary heating wire, the design can reduce the power consumption of the temperature-changing chamber when the temperature is changed fully, and the energy-saving and efficient effect is achieved; meanwhile, the temperature fluctuation in the temperature changing chamber can be effectively reduced, and the energy consumption is greatly reduced.

Drawings

Fig. 1 is a schematic view of a refrigeration apparatus according to the present invention.

Fig. 2 is a schematic structural diagram of a first embodiment of the heat exchange method between the condenser and the evaporation section in the present invention.

Fig. 3 is a schematic diagram of a second embodiment of the present invention relating to the heat exchange between the condenser and the evaporator end.

Fig. 4 is a schematic configuration diagram of a first embodiment of the refrigeration system according to the present invention.

Fig. 5 is a schematic configuration diagram of a second embodiment of the refrigeration system according to the present invention.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in the drawings, and fig. 1 to 5 show the preferred embodiments of the present invention. It should be noted that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make functional, methodical, or structural equivalents or substitutions according to these embodiments without departing from the scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a refrigeration apparatus 100, which includes a temperature changing chamber 1, a refrigeration system 2, an air supply system (not shown), a heat pipe 3, an electromagnetic valve 4 for controlling on/off of the heat pipe 3, and a controller, wherein the refrigeration system 2, the air supply system, and the electromagnetic valve 4 are all connected to the controller in a communication manner.

The controller may be implemented using a controller, such as a PLC controller, found in existing refrigeration units 100.

The refrigerating system 2 comprises a compressor 21, a condenser 22 and a refrigerating branch which are connected with each other to form a refrigerating loop, the refrigerating branch comprises a temperature changing branch 23 which provides cold energy for the temperature changing chamber 1, and the temperature changing branch 23 comprises a temperature changing capillary tube 231 and a temperature changing evaporator 232 connected to the outlet end of the temperature changing capillary tube 231.

The air supply system comprises a temperature-changing air channel for conveying the cold energy generated by the temperature-changing evaporator 232 into the temperature-changing chamber 1 and a temperature-changing fan arranged in the temperature-changing air channel, and the cold energy generated by the temperature-changing evaporator 232 is conveyed into the temperature-changing chamber 1 through the temperature-changing air channel by starting the temperature-changing fan so as to provide the cold energy for the temperature-changing chamber 1.

When the temperature-changing chamber 1 is switched from a cooling mode to a freezing mode, or when the temperature-changing chamber 1 needs to be cooled, the compressor 21 and the temperature-changing fan are started to provide cooling capacity for the temperature-changing chamber 1.

The evaporation section 31 of the heat pipe 3 is arranged close to the condenser 22, the condensation section 32 of the heat pipe 3 is in contact with the temperature-changing liner 10 of the temperature-changing chamber 1, when the electromagnetic valve 4 is opened, the heat pipe 3 is in a conduction state, and can transmit heat on the condenser 22 into the temperature-changing chamber 1, so that the temperature in the temperature-changing chamber 1 is increased, and the temperature-changing chamber 1 is switched from a freezing mode to a cold storage mode, namely, heat is provided for the temperature-changing chamber 1 through the heat of the condenser 22, the design not only can effectively utilize waste heat of the condenser 22, but also can reduce power consumption of the temperature-changing chamber 1 when the temperature is changed completely compared with a scheme of simply adopting an auxiliary heating wire, and has the effects of energy saving and high efficiency; meanwhile, the temperature fluctuation in the temperature-variable chamber 1 can be effectively reduced, and the energy consumption is greatly reduced; when the electromagnetic valve 4 is closed, the heat pipe 3 is in a cut-off state, and at this time, the evaporation section 31 of the heat pipe 3 can store the heat of the condenser 22.

Specifically, after the compressor 21 is started, the high-temperature and high-pressure gaseous refrigerant enters the condenser pipe from the exhaust port of the compressor 21, and releases heat and liquefies in the condensation pipe, the evaporation section 31 of the heat pipe 3 absorbs the heat released by the condensation pipe, the working liquid in the evaporation section 31 is heated and evaporated and takes away the heat, when the electromagnetic valve 4 is opened, the vapor in the evaporation section 31 of the heat pipe 3 flows toward the condensation section 32, heat is released at the condensation section 32 of the heat pipe 3 to provide heat for the temperature changing chamber 1, the vapor is condensed into liquid while releasing the heat, under the action of capillary force in the heat pipe 3 or the self gravity of the liquid, the liquid flows back to the evaporation section 31 to continuously absorb heat, therefore, the heat of the condenser 22 is continuously transferred into the temperature-variable chamber 1, the temperature in the temperature-variable chamber 1 is increased, and the temperature-variable chamber 1 is switched from the freezing mode to the refrigerating mode.

Further, the heat pipe 3 further includes a connection section connecting the evaporation section 31 and the condensation section 32, the electromagnetic valve 4 is disposed at the connection section, and the switching between the on state and the off state of the heat pipe 3 is controlled by controlling the on-off state of the connection section.

Referring to fig. 2, in the first embodiment of the heat exchange method between the condenser 22 and the evaporation section 31 of the heat pipe 3 according to the present invention, the condenser 22 is connected to the evaporation section 31 of the heat pipe 3 side by side, so as to increase the contact area between the evaporation section 31 of the heat pipe 3 and the condenser 22, and provide a better heat exchange effect.

Specifically, the condenser 22 and the evaporation section 31 of the heat pipe 3 may be welded together side by side, or the condenser 22 and the evaporation section 31 of the heat pipe 3 may be connected together side by means of binding.

Referring to fig. 3, in a second embodiment of the heat exchange method between the condenser 22 and the evaporation section 31 of the heat pipe 3 according to the present invention, the refrigeration apparatus 100 further includes a condensing fan 5, and the condensing fan 5 is used for dissipating heat from the condenser 22.

The evaporation section 31 of the heat pipe 3 is positioned at the air outlet side of the condenser 22, after the condensing fan 5 is started, hot air with the heat of the condenser 22 passes through the evaporation section 31 of the heat pipe 3, exchanges heat with the evaporation section 31 of the heat pipe 3, the working liquid in the evaporation section 31 of the heat pipe 3 is heated and evaporated, and takes away heat, when the electromagnetic valve 4 is opened, the vapor in the evaporation section 31 of the heat pipe 3 flows towards the condensation section 32 of the heat pipe 3, heat is released at the condensation section 32 of the heat pipe 3 to provide heat for the temperature changing chamber 1, the vapor is condensed into liquid while releasing the heat, under the action of capillary force in the heat pipe 3 or the gravity of the liquid, the liquid flows back to the evaporation section 31 to continuously absorb heat, therefore, the heat of the condenser 22 is continuously transferred into the temperature-variable chamber 1, so that the temperature in the temperature-variable chamber 1 is increased, and the temperature-variable chamber 1 is switched from the freezing mode to the refrigerating mode.

In the embodiment shown in fig. 3, the air outlet side of the condenser 22 is located toward the condenser 22 to one side of the condensing fan 5, the evaporation section 31 of the heat pipe 3 can be arranged between the condenser 22 and the condensing fan 5 or on the condensing fan 5 away from one side of the condenser 22 after the condensing fan 5 starts to suck air, the heat is blown to the evaporation section 31 of the heat pipe 3 through the hot air of the condenser 22, and the heat exchange is carried out on the evaporation section 31 of the heat pipe 3.

Of course, it can be understood that when the air outlet side of the condenser 22 is located on the side of the condenser 22 far away from the condensing fan 5, the evaporation section 31 of the heat pipe 3 is located on the side of the condenser 22 far away from the condensing fan 5, and after the condensing fan 5 starts blowing, the hot air passing through the condenser 22 is blown to the evaporation section 31 to exchange heat with the evaporation section 31.

In a specific embodiment, the evaporation section 31 of the heat pipe 3 is fixed on the condenser 22, and when the condensing fan 5 is started, on one hand, heat exchange between the condenser 22 and the evaporation section 31 of the heat pipe 3 is realized through direct contact between the evaporation section 31 of the heat pipe 3 and the condenser 22; on the other hand, the heat of the condenser 22 is blown to the evaporation section 31 of the heat pipe 3 by the condensing fan 5, so that air-cooled heat exchange between the condenser 22 and the evaporation section 31 of the heat pipe 3 is realized, and the heat exchange effect between the condenser 22 and the evaporation section 31 of the heat pipe 3 can be enhanced.

The second embodiment of the present invention is the same as the first embodiment except for the above differences, and thus, the description thereof is omitted.

Further, the condensation section 32 of the heat pipe 3 is attached to the temperature-changing liner 10, so as to increase the heat exchange area between the condensation section 32 and the temperature-changing liner 10 and enhance the heat exchange effect.

Further, the refrigeration device 100 further includes an auxiliary heating wire (not shown) attached to the temperature-changing liner, and after the heat pipe 3 operates for a preset time period, when the temperature in the temperature-changing chamber 1 does not reach a preset target temperature, the auxiliary heating wire is started to provide heat for the temperature-changing chamber 1.

Further, in an embodiment, the temperature-varying chamber 1 includes a first temperature-varying chamber 111 and a second temperature-varying chamber 121, which can effectively meet the requirement of the user for the multifunctional partition of the refrigerator.

Specifically, the temperature-changing air duct comprises a first temperature-changing air duct and a second temperature-changing air duct which respectively transmit the cold energy generated by the temperature-changing evaporator 232 to the first temperature-changing chamber 111 and the second temperature-changing chamber 121, wherein a first temperature-changing air door is arranged in the first temperature-changing air duct, a second temperature-changing air door is arranged in the second temperature-changing air duct, when the first temperature-changing chamber 111 needs to be refrigerated and the second temperature-changing chamber 121 does not need to be refrigerated, the compressor 21 and the temperature-changing fan are controlled to start, and meanwhile, the first temperature-changing air door is opened, and the second temperature-changing air door is closed, so that the cold energy is only provided for the first temperature-changing chamber 111; when the second temperature-varying chamber 121 needs to be refrigerated and the first temperature-varying chamber 111 does not need to be refrigerated, the compressor 21 and the temperature-varying fan are controlled to start, the second temperature-varying air door is opened, the first temperature-varying air door is closed, so that only the cold energy is provided for the second temperature-varying chamber 121, when the first temperature-varying chamber 111 and the second temperature-varying chamber 121 both need to be refrigerated, the compressor 21 and the temperature-varying fan are controlled to start, and the first temperature-varying air door and the second temperature-varying air door are opened, so that the cold energy is provided for the first temperature-varying chamber 111 and the second temperature-varying chamber 121 simultaneously.

Further, the refrigerating device 100 further comprises a freezing chamber 6 and a refrigerating chamber 7, and the requirements of users on multifunctional partitions of the refrigerator can be effectively met.

Referring to fig. 4, in the first embodiment of the refrigeration system 2 of the present invention, the refrigeration branch further includes a two-way valve 24 connected to the outlet end of the condenser 22, a first connection pipeline 25 connected in parallel to the temperature-varying branch 23, and a freezing branch 26 connected to the outlet ends of the temperature-varying branch 23 and the first connection pipeline 25, where the first connection pipeline 25 and the temperature-varying branch 23 are respectively connected to two outlet ends of the two-way valve 24; the air supply system further comprises a refrigerating air duct for conveying the cold energy generated by the freezing branch 26 into the refrigerating chamber 7, a refrigerating air door arranged in the refrigerating air duct and a freezing air duct for conveying the cold energy generated by the freezing branch 26 into the freezing chamber 6, namely, the refrigerating chamber 7 and the freezing chamber 6 are cooled through the freezing branch 26, so that the storage space in the refrigerating chamber 7 can be increased, and the cost is saved.

It can be understood that the two-way valve 24 is controlled to control the flow direction of the refrigerant in the refrigeration system 2, that is, when the two-way valve 24 is controlled to be in the temperature change valve state, the refrigerant flows to the temperature change branch 23 through the two-way valve 24, and when the two-way valve 24 is controlled to be in the freezing valve state, the refrigerant flows to the freezing branch 26 through the two-way valve 24.

Specifically, the freezing branch 26 includes a freezing capillary 261 and a freezing evaporator 262, the freezing capillary 261 is disposed on the first connecting pipeline 25, and the freezing evaporator 262 is connected to the outlet ends of the temperature-changing branch 23 and the first connecting pipeline 25.

When at least one of the first temperature changing chamber 111 and the second temperature changing chamber 121 and the refrigerating chamber 7 and/or the freezing chamber 6 need to be refrigerated, the two-way valve 24 is switched to a temperature changing valve state, and the refrigerant flows through the temperature changing capillary 231, the temperature changing evaporator 232 and the freezing evaporator 262 in sequence through the two-way valve 24 and then flows back to the compressor 21. First temperature-changing chamber 111 does not need to refrigerate with second temperature-changing chamber 121, and when refrigerating chamber 7 and/or freezer 6 need to refrigerate, two-way valve 24 switches to the freeze valve state, and the refrigerant passes through two-way valve 24 flows through in proper order freezing capillary 261, freezing evaporimeter 262, then flow back to in the compressor 21.

It can be understood that, when at least one of the first temperature-changing chamber 111 and the second temperature-changing chamber 121 needs to be cooled and neither the refrigerating chamber 7 nor the freezing chamber 6 needs to be cooled, the two-way valve 24 is switched to a temperature-changing valve state, and the refrigerant flows through the temperature-changing capillary 231, the temperature-changing evaporator 232, and the freezing evaporator 262 in sequence via the two-way valve 24 and then flows back to the compressor 21. At this time, the controllable freezing fan is stopped, and the cooling energy generated by the refrigerating system 2 cannot be transmitted to the refrigerating chamber 7 and the freezing chamber 6.

Referring to fig. 5, in a second embodiment of the refrigeration system 2 ' of the present invention, the refrigeration branch further includes a three-way valve 27 connected to the outlet end of the condenser 22, a refrigeration branch 28 and a second connection pipeline 29 connected in parallel to the temperature change branch 23, and a freezing branch 26 ' connected to the outlet ends of the temperature change branch 23, the refrigeration branch 28 and the second connection pipeline 29, where the temperature change branch 23, the refrigeration branch 28 and the second connection pipeline 29 are respectively connected to three outlet ends of the three-way valve 27, when the three-way valve 27 is controlled to be in a temperature change valve state, the refrigerant flows to the temperature change branch 23 through the three-way valve 27, when the three-way valve 27 is controlled to be in a freezing valve state, the refrigerant flows to the freezing branch 26 ' through the three-way valve 27, when the three-way valve 27 is controlled to be in a refrigeration valve state, the refrigerant flows to the refrigerating branch 28 through the three-way valve 27, but the three-way valve 27 may be controlled to be in a full-open state or a two-way state.

The above-mentioned full-open state means that the refrigerant passes through the three-way valve 27 and then simultaneously flows through the temperature changing branch 23, the refrigerating branch 28 and the freezing branch 26'; the two-way state means that the three-way valve 27 is in the temperature change valve state and the freeze valve state at the same time, or in the freeze valve state and the refrigeration valve state at the same time, or in the temperature change valve state and the refrigeration valve state at the same time.

Specifically, the refrigerating branch 28 includes a refrigerating capillary 281 and a refrigerating evaporator 282, and the freezing branch 26 ' includes a freezing capillary 261 ' provided on the second connecting line 29, and a freezing evaporator 262 ' connected to the outlet ends of the temperature changing branch 23, the refrigerating branch 28 and the second connecting line 29.

When at least one of the first temperature-changing chamber 111 and the second temperature-changing chamber 121 and the refrigerating chamber 7 and/or the freezing chamber 6 need to be refrigerated, controlling the three-way valve 27 to be in a full-open state; when at least one of the first temperature-changing chamber 111 and the second temperature-changing chamber 121 needs to be refrigerated and neither the refrigerating chamber 7 nor the freezing chamber 6 needs to be refrigerated, the three-way valve 27 is controlled to be in the temperature-changing valve state, at this time, the freezing fan can be controlled to stop, and the cold energy generated by the refrigerating system 2 cannot be transmitted into the freezing chamber 6 even though flowing through the freezing evaporator 262'; when only the freezing chamber 6 does not need to be refrigerated, the three-way valve 27 is controlled to be in the states of the temperature change valve and the cold storage valve, at this time, the freezing fan can be controlled to stop, and the cold energy generated by the refrigerating system 2 cannot be transmitted into the freezing chamber 6 although flowing through the freezing evaporator 262'; when only the refrigerating chamber 7 does not need to be refrigerated, the three-way valve 27 is controlled to be in the states of the temperature change valve and the refrigerating valve; when the first temperature-changing chamber 111 and the second temperature-changing chamber 121 do not need to be cooled and the refrigerating chamber 7 and the freezing chamber 6 need to be cooled, the three-way valve 27 is controlled to be in a refrigerating valve state and a freezing valve state; when only the refrigerating chamber 7 needs to be refrigerated, the three-way valve 27 is controlled to be in a refrigerating valve state; when only the freezing chamber 6 needs to be cooled, the three-way valve 27 is controlled to be in a freezing valve state.

Further, the refrigeration system 2 further includes a dew-removing pipe 8 connected to an outlet end of the condenser 22, and a dry filter 9 connected to the dew-removing pipe 8, wherein the dew-removing pipe 8 is disposed on a periphery of a door body of the refrigeration apparatus 100 to prevent condensation of the door body.

In summary, the heat pipe 3 for transmitting the heat of the condenser 22 to the temperature-changing chamber 1 is arranged in the refrigeration apparatus 100 of the present invention, and this design can not only effectively utilize the waste heat of the condenser 22, but also reduce the power consumption of the temperature-changing chamber 1 when realizing full temperature change, compared with the scheme of simply adopting an auxiliary heating wire, and has the effects of energy saving and high efficiency; meanwhile, the temperature fluctuation in the temperature-variable chamber 1 can be effectively reduced, and the energy consumption is greatly reduced.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A refrigerating device comprises a temperature-changing chamber and a refrigerating system, wherein the refrigerating system comprises a compressor, a condenser and a refrigerating branch which are connected with each other to form a refrigerating circuit; the method is characterized in that: the refrigerating device also comprises a heat pipe and an electromagnetic valve for controlling the on-off of the heat pipe, wherein the evaporation section of the heat pipe is arranged close to the condenser, and the condensation section of the heat pipe is in contact with the variable-temperature liner of the variable-temperature chamber.

2. A refrigeration unit as recited in claim 1 wherein: the heat pipe also comprises a connecting section for connecting the evaporation section and the condensation section, and the electromagnetic valve is arranged at the connecting section.

3. A refrigeration unit as recited in claim 1 wherein: the condenser is connected with the evaporation section of the heat pipe side by side.

4. A refrigeration unit as recited in claim 1 wherein: the refrigerating device also comprises a condensing fan, and the evaporation section of the heat pipe is positioned on the air outlet side of the condenser.

5. The refrigeration unit of claim 4, wherein: the evaporation section of the heat pipe is fixed on the condenser.

6. A refrigeration unit as recited in claim 1 wherein: the condensation section of the heat pipe is attached to the temperature-changing liner.

7. A refrigeration unit as recited in claim 1 wherein: the refrigerating device also comprises an auxiliary heating wire attached to the temperature-changing liner.

8. A refrigeration unit as recited in claim 1 wherein: the temperature-changing chamber comprises a first temperature-changing chamber and a second temperature-changing chamber, the refrigeration branch comprises a temperature-changing branch for providing cold energy for the first temperature-changing chamber and the second temperature-changing chamber, and the temperature-changing branch comprises a temperature-changing evaporator; the refrigerating device further comprises a first variable temperature air channel and a second variable temperature air channel which respectively convey the cold energy generated by the variable temperature evaporator to the first variable temperature chamber and the second variable temperature chamber, wherein a first variable temperature air door is arranged in the first variable temperature air channel, and a second variable temperature air door is arranged in the second variable temperature air channel.

9. The refrigeration unit of claim 8, wherein: the refrigerating device further comprises a freezing chamber and a refrigerating chamber, the refrigerating branch further comprises a two-way valve connected with the outlet end of the condenser, a first connecting pipeline connected with the temperature changing branch in parallel, and a freezing branch connected with the temperature changing branch and the outlet end of the first connecting pipeline, and the first connecting pipeline and the temperature changing branch are respectively connected with two outlet ends of the two-way valve; the refrigerating device also comprises a refrigerating air channel for conveying the cold energy generated by the freezing branch to the refrigerating chamber, a refrigerating air door arranged in the refrigerating air channel and a freezing air channel for conveying the cold energy generated by the freezing branch to the refrigerating chamber.

10. The refrigeration unit of claim 8, wherein: the refrigerating device further comprises a freezing chamber and a refrigerating chamber, the refrigerating branch further comprises a three-way valve connected with the outlet end of the condenser, a refrigerating branch and a second connecting pipeline which are connected with the variable-temperature branch in parallel, and a freezing branch connected with the outlet ends of the variable-temperature branch, the refrigerating branch and the second connecting pipeline, and the variable-temperature branch, the refrigerating branch and the second connecting pipeline are respectively connected with three outlet ends of the three-way valve.

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