CN215809521U - Defrosting device and air conditioner - Google Patents
Defrosting device and air conditioner Download PDFInfo
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- CN215809521U CN215809521U CN202122138985.2U CN202122138985U CN215809521U CN 215809521 U CN215809521 U CN 215809521U CN 202122138985 U CN202122138985 U CN 202122138985U CN 215809521 U CN215809521 U CN 215809521U
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- defrosting
- heat exchanger
- control valve
- air conditioner
- pipeline
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- 238000010257 thawing Methods 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000004146 energy storage Methods 0.000 claims abstract description 37
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000004378 air conditioning Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 108700041286 delta Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a defrosting device and an air conditioner.A storage tank stores energy storage liquid and is communicated with a refrigerant inlet end and a refrigerant outlet end of an air conditioner heat exchanger through a defrosting pipeline; the first circulating pump is arranged on the defrosting pipeline; the valve assembly is arranged on the defrosting pipeline and on the heat exchange pipeline of the heat exchanger connected with other parts of the air conditioner, and the valve assembly can be opened and closed to enable the heat exchanger to be communicated with other heat exchange parts of the air conditioner or communicated with the storage tank. The utility model enables the heat exchanger to be switched and communicated with a heat exchange system of an air conditioner or a storage tank by arranging the valve assembly and the storage tank. When defrosting is needed, the heat exchanger is communicated with the storage tank, so that the energy storage liquid is conveyed to the heat exchanger, and the heat of the energy storage liquid is used for defrosting the heat exchange fins of the heat exchanger. Because the energy storage liquid is directly introduced into the refrigerant heat exchange pipeline of the heat exchanger for defrosting, the fins of the evaporator can be defrosted uniformly, the energy storage liquid is reduced by solar energy, and the operation cost is reduced.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a defrosting device and an air conditioner.
Background
The granary has a wide construction terrain and sufficient sunlight, and the air conditioning unit is suspended and installed on the upper layer of the granary. Under the medium and low temperature storage environment of the granary air conditioning unit, an evaporator of the unit can frost, the reliable operation and the refrigerating output of the unit are influenced, the electric heating defrosting is adopted, the power consumption is large, and the defrosting of fins of the evaporator is not uniform; after the unit defrosting is finished, because defrosting is uneven, a lot of water drops are possibly attached to the fins of the evaporator, the unit refrigerates after defrosting, the centrifugal fan provided by the evaporator has large air volume, and the air supply distance is far away from the centrifugal fan, so that the water drops are directly blown to the surface of stored grains to influence the storage quality of the stored grains.
SUMMERY OF THE UTILITY MODEL
The utility model provides a defrosting device and an air conditioner, aiming at solving the technical problem of low unit defrosting efficiency in the prior art.
The technical scheme adopted by the utility model is as follows:
the utility model provides a defrosting device, which comprises:
the storage tank is used for storing energy storage liquid and is communicated with a refrigerant inlet and outlet end and a liquid end of the air-conditioning heat exchanger through a defrosting pipeline;
the first circulating pump is arranged on the defrosting pipeline;
the valve assembly is arranged on the defrosting pipeline and on the heat exchange pipeline of the heat exchanger connected with other parts of the air conditioner, and the valve assembly can be opened and closed to enable the heat exchanger to be communicated with other heat exchange parts of the air conditioner or communicated with the storage tank.
The utility model also includes: the device comprises a heating assembly for heating energy storage liquid in a storage tank, and a controller for controlling the heating assembly according to temperature and controlling a valve assembly according to temperature and pressure values.
The heating assembly includes: the solar heat collecting device comprises a heat exchange circulating pipeline for supplying heat to the storage tank, and a second circulating pump and a solar heat collecting pipe which are arranged on the heat exchange circulating pipeline.
The valve assembly includes: the defrosting device comprises a first control valve arranged on an inlet heat exchange pipeline of the heat exchanger, a second control valve arranged on an outlet heat exchange pipeline of the heat exchanger, a third control valve arranged on a liquid return section of a defrosting pipeline, and a fourth control valve arranged on a liquid supply section of the defrosting pipeline.
When the air conditioner meets the defrosting condition, the controller disconnects the first control valve, when the pressure value in the heat exchanger is smaller than a preset pressure value, the controller disconnects the second control valve, closes the compressor of the air conditioner and the fan of the heat exchanger, and opens the third control valve, the fourth control valve and the first circulating pump to defrost.
In the first embodiment, when the air conditioner meets the condition of exiting defrosting, the controller closes the first circulating pump, and the third control valve and the fourth control valve are kept opened until the temperature of the surface of the heat exchanger is greater than or equal to the preset temperature.
In a second embodiment, when the air conditioner meets the condition of exiting defrosting, the controller continuously or discontinuously operates the first circulating pump, and the third control valve and the fourth control valve are kept opened until the temperature of the surface of the heat exchanger is greater than or equal to the preset temperature.
When the temperature of the surface of the heat exchanger is greater than or equal to a preset temperature, the controller disconnects the fourth control valve, and the first circulating pump is kept started until the pressure value in the heat exchanger is smaller than a preset pressure value, the controller closes the first circulating pump and disconnects the third control valve; and then opening the first control valve, the second control valve, the compressor of the air conditioner and the fan of the heat exchanger.
The utility model also comprises a temperature sensor for detecting the actual temperature of the energy storage liquid in the storage tank, and when the actual temperature of the energy storage liquid is lower than the preset storage temperature, the controller controls the second circulating pump to start and operate; and when the actual temperature of the energy storage liquid is greater than the sum of the preset storage temperature and the preset temperature difference, the controller controls the second circulating pump to stop running.
The utility model also provides an air conditioner which comprises the defrosting device.
Compared with the prior art, the heat exchanger can be switched and communicated with the heat exchange system and the storage tank of the air conditioner by arranging the valve assembly and the storage tank. When defrosting is needed, the communication between the heat exchanger and the air conditioner heat exchange system is disconnected, the heat exchanger is communicated with the storage tank, the energy storage liquid is conveyed to the heat exchanger, and the heat of the energy storage liquid is used for defrosting the heat exchange fins of the heat exchanger. Because the energy storage liquid is directly introduced into the refrigerant heat exchange pipeline of the heat exchanger for defrosting, the fins of the evaporator can be defrosted uniformly, and the defrosting time is shortened. And the solar energy is used for reducing the energy storage liquid, so that the operation cost is further reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1, the present invention provides a defrosting apparatus for an air conditioner, which specifically includes: the storage tank 1, the first circulation pump 31 and the valve assembly, the storage tank 1 stores energy storage liquid, which can be refrigerant or liquid with compatibility with refrigerant. While the storage tank 1 has a heat-preserving effect. The storage tank 1 is communicated with a refrigerant liquid inlet and outlet end of an air-conditioning heat exchanger 51 (specifically, an evaporator) through a defrosting pipeline 3, that is, energy storage liquid in the storage tank 1 can be conveyed to a refrigerant heat exchange pipe in the heat exchanger 51 through the defrosting pipeline 3 (it should be noted that the defrosting pipeline in the utility model is specially used for defrosting of the heat exchanger 51, is not an original pipeline of an air conditioner, and is a special pipeline additionally installed for defrosting of the heat exchanger in the patent); a first circulation pump 31 is arranged on the defrost duct 3 to provide power for the flow of the accumulation liquid. The valve assembly is arranged on the defrosting pipeline 3 and on the heat exchange pipeline of the heat exchanger 51 connected with other heat exchange components of the air conditioner, and the heat exchanger 51 is communicated with other heat exchange components of the air conditioner or the storage tank 1 by opening and closing each valve of the valve assembly, namely, the heat exchanger 51 can be switched and communicated with the heat exchange system of the air conditioner and the storage tank 1 by arranging the valve assembly. When defrosting is needed, the communication between the heat exchanger 51 and the air conditioner heat exchange system is disconnected, the heat exchanger 51 is communicated with the storage tank 1, the first circulating pump 31 is started again, the energy storage liquid is conveyed to the heat exchanger 51, and defrosting is carried out on the heat exchange fins of the heat exchanger through the heat of the energy storage liquid. Because the energy storage liquid is directly introduced into the refrigerant heat exchange pipeline of the heat exchanger for defrosting, the fins of the evaporator can be defrosted uniformly, the defrosting time is shortened, and the operation cost is reduced.
The utility model also comprises a heating assembly and a controller, wherein the heating assembly is used for heating the energy storage liquid in the storage tank 1, and the heating assembly specifically comprises: heat transfer circulating line 22, second circulating pump 23 and solar energy collection pipe 21, heat transfer circulating line 22 and the heating pipe intercommunication in the storage jar 1, second circulating pump 23 and solar energy collection pipe 21 set up on heat transfer circulating line 22, can be through solar energy heating energy storage liquid and through storage jar storage, improve energy utilization efficiency. The heating assembly may also be an electric heating assembly, i.e. it is within the scope of the utility model as long as it is capable of heating the charging fluid in the reservoir.
The energy storage liquid in the storage tank is detected by a temperature sensor, when the actual temperature Tx of the energy storage liquid is lower than the preset storage temperature Txs, the second circulating pump is started to operate, the energy storage liquid circularly flows into the solar heat collecting pipe to be heated, and the second circulating pump stops operating until the actual temperature Tx of the energy storage liquid is detected to be higher than the preset storage temperature Txs + the preset temperature difference delta 1; if the actual temperature Tx of the energy storage fluid is greater than or equal to its preset storage temperature Txs, the second circulation pump is not operated. The running time of the second circulating pump is reduced, and the heating efficiency is improved.
The controller can be a controller of the air conditioner, or can be a controller which is independently arranged for the defrosting device and is used for controlling the valve component, the heating component, a compressor of the air conditioner and a centrifugal fan of the evaporator. Meanwhile, a pressure value detector for detecting the pressure value in the tube and a second temperature detector for detecting the temperature of the fins of the heat exchanger are arranged in the heat exchanger, and control parameters are provided for the controller to be compared.
The valve assembly includes: a first control valve 41, a second control valve 42, a third control valve 43 and a fourth control valve 44. The first control valve 41 is arranged on an inlet heat exchange pipeline of the heat exchanger 51, the second control valve 42 is arranged on an outlet heat exchange pipeline of the heat exchanger 51, the third control valve 43 is arranged on a liquid return section of the defrosting pipeline 3, and the fourth control valve 44 is arranged on a liquid supply section of the defrosting pipeline 3.
The specific control of defrosting is as follows:
when the air conditioner meets the defrosting condition, namely the controller receives a defrosting signal, the controller disconnects the first control valve 41, and the second control valve 42 is kept opened, so that the compressor 53 can not convey the refrigerant to the inlet end of the evaporator (namely the heat exchanger 51), and meanwhile, the refrigerant (refrigerant) in the evaporator is sucked out from the outlet end; when the pressure value in the evaporator is smaller than the preset pressure value, namely after most of the refrigerant in the evaporator is pumped out, the second control valve 42 is disconnected, so that the heat exchange system of the evaporator and the air conditioner is completely interrupted, and the compressor 53 of the air conditioner and the fan 511 of the heat exchanger are simultaneously closed; and then the third control valve 43, the fourth control valve 44 and the first circulating pump 31 are opened, so that the energy storage liquid circulates between the storage tank 1 and the evaporator, and the evaporator is defrosted. Because the energy storage liquid is directly introduced into the refrigerant heat exchange pipeline of the heat exchanger for defrosting, the fins of the evaporator can be defrosted uniformly, and the defrosting time is shortened.
The control steps of the air conditioner meeting the condition of exiting defrosting specifically comprise two embodiments.
The first embodiment is: when the air conditioner meets the condition of exiting defrosting, the controller closes the first circulating pump 31, and the third control valve 43 and the fourth control valve 44 are kept open until the temperature of the surface of the evaporator is greater than or equal to the preset temperature, so that the water on the fins of the evaporator is completely dried. The water beads on the evaporator fins are prevented from being blown into the room after the fan 511 is started, and the influence on the room can be effectively reduced when the water-cooling type air-conditioning system is applied to scenes such as machine rooms and granaries. For example, the grains are easy to go moldy when meeting water, and the storage time of the grains is prolonged.
The second embodiment is: when the air conditioner meets the condition of exiting defrosting, the controller continuously operates (the power operation of the first circulating pump 31 is reduced, namely the gear of the first circulating pump 31 is reduced, so that the flow speed of the energy storage liquid in the defrosting pipeline is slowed) or intermittently operates the first circulating pump 31, and the third control valve 43 and the fourth control valve 44 are kept opened until the temperature of the surface of the evaporator is greater than or equal to the preset temperature, so that the water on the fins of the evaporator is completely dried. If the first circulating pump 31 of control discontinuous operation or the gear that reduces first circulating pump 31 continuously moves, can reduce the velocity of flow of energy storage liquid, make the heat exchange efficiency of energy storage liquid uprise, further accelerate the stoving speed of drop of water, improve drying efficiency.
When the temperature of the surface of the heat exchanger 51 is greater than or equal to the preset temperature, it indicates that the moisture on the fins is basically dried, at this time, the controller turns off the fourth control valve 44, and the first circulating pump 31 is kept on, and the energy storage liquid is pumped back to the storage tank 1, until the pressure value in the heat exchanger 51 is less than the preset pressure value, the controller turns off the first circulating pump 31, turns off the third control valve 43, and completely cuts off the storage tank 1 and the evaporator; and then the first control valve 41, the second control valve 42, the compressor 53 of the air conditioner and the fan 511 of the heat exchanger 51 are opened, so that the air conditioner operates normally.
The utility model also provides an air conditioner which comprises the defrosting device, wherein the air conditioner can be a granary air conditioning unit and can also be an air conditioning unit applied to other special scenes.
The concrete structure of air conditioner is the air conditioner structure commonly used among the prior art, specifically includes: an evaporator 51, a gas-liquid separator 52, a compressor 53, a condenser 54, a liquid storage tank 55, a drying filter 56 and an electronic expansion valve 57 which are connected in sequence through heat exchange pipelines, and a centrifugal fan 511 corresponding to the evaporator. The specific heat exchange operation mode is an operation mode of an air conditioner in the prior art, and is not specifically described.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A defrosting apparatus characterized by comprising:
the storage tank is used for storing energy storage liquid and is communicated with a refrigerant inlet end and a refrigerant outlet end of the air-conditioning heat exchanger through a defrosting pipeline;
the first circulating pump is arranged on the defrosting pipeline;
the valve assembly is arranged on the defrosting pipeline and on the heat exchange pipeline of the heat exchanger connected with other parts of the air conditioner, and the valve assembly can be opened and closed to enable the heat exchanger to be communicated with other heat exchange parts of the air conditioner or communicated with the storage tank.
2. The defrosting apparatus of claim 1, further comprising: the device comprises a heating assembly for heating energy storage liquid in a storage tank, and a controller for controlling the heating assembly according to temperature and controlling a valve assembly according to temperature and pressure values.
3. The defrosting apparatus of claim 2, wherein the heating assembly comprises: the solar heat collecting device comprises a heat exchange circulating pipeline for supplying heat to the storage tank, and a second circulating pump and a solar heat collecting pipe which are arranged on the heat exchange circulating pipeline.
4. The defrosting apparatus of claim 2, wherein the valve assembly comprises: the defrosting device comprises a first control valve arranged on an inlet heat exchange pipeline of the heat exchanger, a second control valve arranged on an outlet heat exchange pipeline of the heat exchanger, a third control valve arranged on a liquid return section of a defrosting pipeline, and a fourth control valve arranged on a liquid supply section of the defrosting pipeline.
5. The defrosting device according to claim 4, wherein the controller disconnects the first control valve when the air conditioner meets a defrosting condition, and disconnects the second control valve and closes a compressor of the air conditioner and a fan of the heat exchanger when a pressure value in the heat exchanger is smaller than a preset pressure value, and then opens the third control valve, the fourth control valve and the first circulating pump for defrosting.
6. The defrosting apparatus of claim 4 wherein when the air conditioner meets the exit defrosting condition, the controller turns off the first circulation pump and the third and fourth control valves remain open until the temperature of the surface of the heat exchanger is greater than or equal to a preset temperature.
7. The defrosting device of claim 4, wherein when the air conditioner meets the condition of exiting defrosting, the controller continuously operates or discontinuously operates the first circulating pump, and the third control valve and the fourth control valve are kept open until the temperature of the surface of the heat exchanger is greater than or equal to a preset temperature.
8. The defrosting device according to claim 6 or 7, wherein when the temperature of the surface of the heat exchanger is greater than or equal to a preset temperature, the controller turns off the fourth control valve, and the first circulation pump is kept on until the pressure value in the heat exchanger is less than a preset pressure value, the controller turns off the first circulation pump, and turns off the third control valve; and then opening the first control valve, the second control valve, the compressor of the air conditioner and the fan of the heat exchanger.
9. The defrosting apparatus according to claim 3, further comprising a temperature sensor for detecting an actual temperature of the energy storage fluid in the storage tank, wherein the controller controls the second circulation pump to start operation when the actual temperature of the energy storage fluid is less than a preset storage temperature; and when the actual temperature of the energy storage liquid is greater than the sum of the preset storage temperature and the preset temperature difference, the controller controls the second circulating pump to stop running.
10. An air conditioner characterized by comprising the defrosting device of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122138985.2U CN215809521U (en) | 2021-09-06 | 2021-09-06 | Defrosting device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122138985.2U CN215809521U (en) | 2021-09-06 | 2021-09-06 | Defrosting device and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215809521U true CN215809521U (en) | 2022-02-11 |
Family
ID=80156396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122138985.2U Active CN215809521U (en) | 2021-09-06 | 2021-09-06 | Defrosting device and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215809521U (en) |
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2021
- 2021-09-06 CN CN202122138985.2U patent/CN215809521U/en active Active
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