CN217737487U - Heat dissipation device and unit - Google Patents
Heat dissipation device and unit Download PDFInfo
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- CN217737487U CN217737487U CN202221491437.6U CN202221491437U CN217737487U CN 217737487 U CN217737487 U CN 217737487U CN 202221491437 U CN202221491437 U CN 202221491437U CN 217737487 U CN217737487 U CN 217737487U
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Abstract
The utility model discloses a heat abstractor and unit. The cooling system is applied to a unit comprising at least two refrigerant systems, all the refrigerant systems share a water pump, each refrigerant system corresponds to at least one fan, all the fans are synchronously controlled, and each refrigerant system is provided with a cooling component and/or each refrigerant system is provided with a refrigerant cooling loop; when the heat dissipation assembly is arranged, in any refrigerant system, the heat dissipation assembly and the IPM module are connected to the refrigerant circulation loop in series, according to the refrigerant flow direction, the IPM module is located in front of the throttling element, and the heat dissipation assembly is located in front of the IPM module; the heat dissipation assembly is used for driving a refrigerant to circulate when a compressor of the refrigerant system is not started so as to dissipate heat of the IPM module of the system; when the refrigerant heat dissipation loop is arranged, the refrigerant heat dissipation loop of each refrigerant system passes through the water pump IPM module, all the fan IPM modules and the compressor IPM module of the system. And the effective heat dissipation of the IPM of the unit is realized.
Description
Technical Field
The utility model relates to a unit technical field particularly, relates to a heat abstractor and unit.
Background
In the direct current frequency conversion Module machine of built-in water conservancy Module, compressor, fan and water pump all are provided with corresponding IPM (Intelligent Power Module), and the cooling method of IPM Module (also can be called heat dissipation Module) has: air-cooled heat dissipation, heat pipe heat dissipation, refrigerant heat dissipation and the like.
The radiating area of forced air cooling heat dissipation needs very big to put IPM module in the fan side, the module machine is installed in open air, if the electric cabinet is sealed not well, intake easily, and radiating module area is big, is unfavorable for the overall arrangement.
The refrigerant heat dissipation has the following problems: if the unit comprises at least 2 refrigerant systems, each refrigerant system corresponds to at least 1 fan, all the fans are synchronously controlled, if only part of compressors are started, all the fans are started, but the refrigerant in the refrigerant system where the compressor which is not started does not circulate, and the fan IPM module in the refrigerant system can not dissipate heat through the refrigerant.
Aiming at the problem that the conventional refrigerant heat dissipation mode cannot effectively dissipate heat of the IPM module of the unit, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a heat abstractor and unit to solve current refrigerant radiating mode at least and can't effectively carry out radiating problem to unit IPM module.
In order to solve the above technical problem, an embodiment of the present invention provides a heat dissipation apparatus, which is applied to a unit including at least two refrigerant systems, wherein all the refrigerant systems share a water pump, each refrigerant system corresponds to at least one fan, all the fans are synchronously controlled, each refrigerant system is provided with a heat dissipation assembly, and/or each refrigerant system is provided with a refrigerant heat dissipation loop;
under the condition that the coolant system is provided with the heat dissipation assembly, the heat dissipation assembly of each coolant system and the IPM module of the coolant system are connected to a coolant circulation loop of the coolant system in series, and according to the coolant flow direction during operation, the IPM module is positioned in front of the throttling element, and the heat dissipation assembly is positioned in front of the IPM module; the heat dissipation assembly is used for driving refrigerant circulation under the condition that a compressor of the refrigerant system is not started, so that the IPM module of the refrigerant system is cooled through heat exchange between the refrigerant and the outside;
under the condition that the refrigerant system is provided with the refrigerant heat dissipation loop, the refrigerant heat dissipation loop of each refrigerant system passes through the water pump IPM module, all the fan IPM modules and the compressor IPM module of the refrigerant system.
Optionally, under the condition that the cooling medium system is provided with a heat dissipation assembly, the throttling element includes: a heating throttling element and a cooling throttling element; said IPM module being positioned between said heating throttling element and said cooling throttling element; the heat dissipation assembly includes: a first heat dissipation assembly and a second heat dissipation assembly; the first heat dissipation assembly is connected with the heating throttling element in parallel, and the second heat dissipation assembly is connected with the refrigerating throttling element in parallel.
Optionally, the first heat dissipation assembly and the second heat dissipation assembly each include: a refrigerant pump and a valve which are connected in series.
Optionally, when the refrigerant system is provided with a refrigerant heat dissipation loop, according to a refrigerant flow direction during operation, an inlet and an outlet of the refrigerant heat dissipation loop are both located in front of the throttling element of the refrigerant system.
Optionally, the refrigerant system includes: the air conditioner comprises a heating throttling element and a refrigerating throttling element, wherein one end of a refrigerant heat dissipation loop is connected to the heating throttling element, and the other end of the refrigerant heat dissipation loop is connected to the refrigerating throttling element.
Optionally, under the condition that the refrigerant system is provided with the refrigerant heat dissipation loop, at least two sections of pipelines in the refrigerant heat dissipation loop of each refrigerant system pass through the water pump IPM module, all the fan IPM modules and the same IPM module in the compressor IPM module of the refrigerant system.
Optionally, all the pipelines passing through the same IPM module are uniformly distributed on the IPM module.
The embodiment of the utility model provides a still provide a unit, include: the embodiment of the utility model provides a heat abstractor.
By applying the technical scheme of the utility model, each refrigerant system is provided with a heat radiation component, and/or each refrigerant system is provided with a refrigerant heat radiation loop; under the condition that the compressor is not started and the heat dissipation requirement exists, the refrigerant can be driven to circulate through the heat dissipation assembly in the refrigerant system, and the IPM module needing heat dissipation can be continuously dissipated by utilizing the heat exchange between the refrigerant and the external environment; by arranging the refrigerant heat dissipation loop in each refrigerant system, the refrigerant of each refrigerant system can flow through all the fan IPM modules and all the water pump IPM modules, and no matter which compressor in the refrigerant system is started, the fan IPM modules and the water pump IPM modules in the refrigerant systems which are not started can have the refrigerant to flow for heat dissipation; therefore, the machine set IPM module can be effectively cooled, the cooling effect of the IPM module is guaranteed, the IPM module is prevented from being too high in temperature, the reliability of products is improved, and the after-sale failure rate is reduced.
Drawings
FIG. 1 is a schematic illustration of a prior art assembly;
fig. 2 is a first schematic view of a heat dissipation device according to a first embodiment of the present invention;
fig. 3 is a second schematic view of a heat dissipation device according to a first embodiment of the present invention;
fig. 4 is a schematic diagram two of the unit according to the first embodiment of the present invention;
fig. 5 is a schematic view of a heat dissipation device according to a second embodiment of the present invention;
fig. 6 is a schematic side view of a heat dissipation device according to a second embodiment of the present invention;
fig. 7 is a flowchart of a heat dissipation control method according to a fourth embodiment of the present invention;
fig. 8 is a heat dissipation control flow diagram of a unit including at least two refrigerant systems according to the fourth embodiment of the present invention;
description of reference numerals:
the system comprises a compressor 1, a four-way valve 2, an outdoor heat exchanger 3 (which can be a fin heat exchanger), an indoor heat exchanger 4 (which can be a shell-and-tube heat exchanger), a gas-liquid separator 5, a first one-way valve 61, a second one-way valve 62, an IPM module 10, a heat dissipation assembly 20, a first heat dissipation assembly 21, a second heat dissipation assembly 22, a throttling element 30, a heating throttling element 31, a refrigerating throttling element 32, a refrigerant circulation loop 40, a refrigerant pump 41, a valve 42, an IPM module 71 of the compressor 1 in a refrigerant system A, an IPM module 72 of the compressor 1 in a refrigerant system B, a water pump IPM module 73 and a fan IPM module 74.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first", "second", and the like in the description and in the claims and in the drawings of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
The embodiment of the utility model provides a unit be module machine, the unit includes: the refrigerant system comprises at least two refrigerant systems, wherein each refrigerant system is provided with a respective refrigerant circulation loop, and the refrigerant circulation loop is a loop mainly composed of a compressor, a condenser, a throttling element and an evaporator. The refrigerant systems are independent from each other, that is, the refrigerant in one refrigerant system does not flow into other refrigerant systems. All refrigerant systems share the water pump, each refrigerant system corresponds to at least one fan, when the unit operates normally (such as refrigeration or heating), all the fans are controlled synchronously, namely the starting and stopping states and the operating rotating speed of all the fans are the same.
As shown in fig. 1, taking an example that the unit includes two refrigerant systems a and B, the two refrigerant systems both include: the system comprises a compressor 1, a four-way valve 2, an outdoor heat exchanger 3 (which can be a fin heat exchanger), an indoor heat exchanger 4 (which can be shared by two refrigerant systems and can be a shell-and-tube heat exchanger), a gas-liquid separator 5, a heating throttling element 31, a cooling throttling element 32, a first check valve 61, a second check valve 62 and an IPM module 10. The two refrigerant systems share a water pump, the water pump is located at the indoor heat exchanger 4 and not shown in the figure, and the water pump is used for realizing water circulation of the indoor side so as to exchange heat between the refrigerant and the water and supply cold or heat to the indoor side. The water pump corresponds to a water pump IPM module. The outdoor heat exchangers 3 in the refrigerant system A and the refrigerant system B are respectively and correspondingly provided with fans which are synchronously controlled, and each fan is provided with an IPM module corresponding to the fan. The IPM module 10 in the refrigerant system a represents all IPM modules that can dissipate heat through refrigerant circulation of the refrigerant system a, for example, an IPM module of the compressor 1 in the refrigerant system a, an IPM module of a fan corresponding to the outdoor heat exchanger 3 in the refrigerant system a, and a water pump IPM module. The IPM module 10 in the refrigerant system B represents all IPM modules that can dissipate heat through refrigerant circulation of the refrigerant system B, for example, an IPM module of the compressor 1 in the refrigerant system B, an IPM module of a fan corresponding to the outdoor heat exchanger 3 in the refrigerant system B, and a water pump IPM module. It should be noted that the water pump IPM module may perform heat dissipation through refrigerant circulation of any refrigerant system, that is, a refrigerant circulation loop of each refrigerant system may pass through the water pump IPM module, and the water pump IPM module may be included in the IPM module 10 of the refrigerant system a and the IPM module 10 of the refrigerant system B at the same time. In fig. 1, solid arrows indicate the refrigerant flow in the cooling mode, and dashed arrows indicate the refrigerant flow in the heating mode.
For the unit shown in fig. 1, if only the refrigerant system a is operated, that is, the compressor 1 in the refrigerant system a is started, because the fans are synchronously controlled, both the fans are started, but the compressor 1 in the refrigerant system B is not started, the refrigerant in the refrigerant system B is not circulated, and the IPM module of the fan corresponding to the outdoor heat exchanger 3 in the refrigerant system B cannot dissipate heat through the refrigerant, so that the fan is protected or burned out due to the excessively high temperature of the IPM module, and reliability is affected.
The embodiment of the utility model provides a heat abstractor is applied to the unit including two at least refrigerant systems, all refrigerant system sharing water pumps, and every refrigerant system corresponds at least one fan, all fan synchro control separately. Each refrigerant system is provided with a heat dissipation assembly, and/or each refrigerant system is provided with a refrigerant heat dissipation loop. Through the heat dissipation assembly and/or the refrigerant heat dissipation loop, the unit IPM module can be effectively dissipated, the heat dissipation effect is guaranteed, the IPM module is prevented from being too high in temperature, the reliability of products is improved, and the after-sale failure rate is reduced.
Under the condition that the compressor is not started and the heat dissipation requirement is met, the refrigerant circulation can be driven through the heat dissipation assembly in the refrigerant system, and the IPM module needing heat dissipation can be continuously dissipated by utilizing heat exchange between the refrigerant and the external environment. Through setting up refrigerant heat dissipation circuit for every refrigerant system's refrigerant homoenergetic enough flows through all fan IPM modules and water pump IPM module, no matter open the compressor in which refrigerant system, and fan IPM module in the refrigerant system that does not open all can have the refrigerant to flow and come and dispel the heat.
Two structures are described below by way of example one and example two.
Example one
As shown in fig. 2, in the case that the heat dissipation assembly 20 is disposed in each refrigerant system, the heat dissipation assembly 20 of each refrigerant system and the IPM module 10 of the refrigerant system are connected in series to a refrigerant circulation circuit 40 of the refrigerant system, and the refrigerant circulation circuit 40 is a circuit mainly composed of a compressor, a condenser, a throttling element, and an evaporator. According to the flowing direction of the coolant during operation (as shown by an arrow in fig. 2), the IPM module 10 is located in front of the throttling element 30, and the heat dissipation assembly 20 is located in front of the IPM module 10, the connection sequence can ensure that the coolant before throttling can be used for effectively dissipating heat of the IPM module 10, and the problem that the IPM module reliability is affected due to too low temperature of the throttled coolant is avoided.
The heat dissipation assembly 20 is configured to drive a refrigerant to circulate when a compressor of the refrigerant system is not turned on, so as to dissipate heat of the IPM module 10 of the refrigerant system through heat exchange between the refrigerant and the outside. The compressor is a compressor in the refrigerant circulation circuit 40 in which the heat radiation unit 20 is located.
This embodiment sets up heat-radiating component 20, with IPM module 10 series connection to refrigerant circulation circuit 40, under the condition that the compressor is not opened, there is not the refrigerant to circulate in refrigerant circulation circuit 40, if there is the heat dissipation demand, can drive the refrigerant circulation through heat-radiating component 20, through the heat transfer of refrigerant and external environment, can last the heat dissipation to IPM module 10, guarantee IPM module 10's radiating effect, avoid IPM module 10 high temperature, improve the reliability of product, reduce after sales fault rate.
As shown in fig. 3, the throttling element 30 may include: a heating throttling element 31 and a cooling throttling element 32, and the ipm module 10 is located between the heating throttling element 31 and the cooling throttling element 32. The heat dissipating module 20 includes: first heat dissipation assembly 21 and second heat dissipation assembly 22, first heat dissipation assembly 21 is parallelly connected with heating throttling element 31, and second heat dissipation assembly 22 is parallelly connected with cooling throttling element 32. In fig. 3, solid arrows indicate the refrigerant flow direction in the cooling mode, and broken arrows indicate the refrigerant flow direction in the heating mode.
Based on the structure, normal refrigeration or heating can be guaranteed through control over the specific throttling element and the heat dissipation assembly, and effective heat dissipation of the IPM module 10 when the compressor is not started and heat dissipation requirements exist can also be guaranteed.
Specifically, the first heat dissipation assembly 21 and the second heat dissipation assembly 22 each include: a refrigerant pump 41 and a valve 42 connected in series. The refrigerant pump 41 is used for providing power for refrigerant circulation, the valve 42 is used for controlling the on-off of the pipeline where the valve is located, and the valve 42 can be a device with an on-off control function, such as an electromagnetic valve. For example, the refrigerant flow direction driven by the refrigerant pump 41 in the first heat dissipation assembly 21 is shown by a solid arrow in fig. 3, and the refrigerant flow direction of the heating throttling element 31 connected in parallel with the refrigerant pump 41 in the heating mode is shown by a dotted arrow in fig. 3, and the two refrigerant flow directions are opposite. The throttling element 30, the refrigerant pump 41 and the valve 42 in the heat dissipation assembly 20 are controlled according to the current requirements of the unit, so that cooling and heating can be realized, or the IPM module 10 can be cooled when the compressor is not started and the cooling requirement is met.
According to different conditions of the unit, the IPM modules needing heat dissipation are different, for example, in an automatic anti-freezing mode, a water pump runs, a compressor stops, and at the moment, the IPM modules of the water pump need heat dissipation; when the compressor is started, the compressor is started later than the water pump and the fan, and the water pump IPM module and the fan IPM module need to dissipate heat at the moment; all fans in the unit are synchronously controlled, when part of refrigerant systems are started, the fans in the refrigerant systems which are not started are also operated, and the fan IPM module needs to dissipate heat at the moment.
As shown in fig. 4, taking the unit including two refrigerant systems a and B as an example, the two refrigerant systems share a water pump, the water pump is located at the indoor heat exchanger 4, not shown in the figure, and the water pump is used for realizing water circulation at the indoor side, so that the refrigerant exchanges heat with water to supply cold or heat to the indoor side. The water pump corresponds to a water pump IPM module. The outdoor heat exchangers 3 in the refrigerant system A and the refrigerant system B are respectively and correspondingly provided with a fan, the two fans are synchronously controlled, and each fan is provided with an IPM module corresponding to the fan. The IPM module 10 in the refrigerant system a represents all IPM modules that can dissipate heat through refrigerant circulation of the refrigerant system a, for example, an IPM module of the compressor 1 in the refrigerant system a, an IPM module of a fan corresponding to the outdoor heat exchanger 3 in the refrigerant system a, and a water pump IPM module. The IPM module 10 in the refrigerant system B represents all IPM modules capable of dissipating heat through refrigerant circulation of the refrigerant system B, for example, an IPM module of the compressor 1 in the refrigerant system B, an IPM module of a fan corresponding to the outdoor heat exchanger 3 in the refrigerant system B, and an IPM module of a water pump. The refrigerant circulation loop of each refrigerant system can pass through the water pump IPM module, namely the water pump IPM module can dissipate heat through the refrigerant circulation of any refrigerant system. In fig. 4, solid arrows indicate the refrigerant flow direction in the cooling mode, and broken arrows indicate the refrigerant flow direction in the heating mode.
In this embodiment, the first and second heat dissipation assemblies 21 and 22 are used to replace the first and second check valves 61 and 62 in fig. 1, and when the compressor is not started and needs to dissipate heat, the heat dissipation assemblies in the refrigerant system can drive the refrigerant to circulate, and the IPM module that needs to dissipate heat can be continuously dissipated by using the heat exchange between the refrigerant and the external environment, so as to ensure the effective heat dissipation of the IPM module of the unit.
Example two
Under the condition that each refrigerant system is provided with a refrigerant heat dissipation loop, the refrigerant heat dissipation loop of each refrigerant system passes through the water pump IPM module, all the fan IPM modules and the compressor IPM module of the refrigerant system.
This embodiment is through all setting up refrigerant heat dissipation loop in every refrigerant system for every refrigerant system's refrigerant homoenergetic enough flows through all fan IPM module and water pump IPM module, no matter open the compressor in which refrigerant system, fan IPM module and water pump IPM module in the refrigerant system that does not open all can have the refrigerant to flow through, realize refrigerant circulation heat dissipation, guarantee the radiating effect of IPM module, avoid IPM module high temperature, improve the reliability of product, reduce after sale fault rate.
Specifically, in any refrigerant system, according to the flow direction of the refrigerant during operation, the inlet and the outlet of the refrigerant heat dissipation loop of the refrigerant system are both located in front of the throttling element of the refrigerant system. The throttling element can be an electronic expansion valve or a capillary tube and other devices with throttling function. The IPM module can be effectively cooled by utilizing the refrigerant before throttling, and the IPM module is possibly too low in temperature due to the fact that the temperature of the refrigerant after throttling is too low, and the reliability of the IPM module is affected.
The refrigerant system may include: heating throttling element and refrigeration throttling element, the one end of refrigerant heat dissipation return circuit is connected to heating throttling element, and the other end of refrigerant heat dissipation return circuit is connected to refrigeration throttling element. Therefore, the IPM module can be cooled by using the refrigerant before throttling in both the heating mode and the cooling mode.
Preferably, at least two sections of pipelines in the refrigerant heat dissipation loop of each refrigerant system pass through the same IPM module in the water pump IPM module, all the fan IPM modules and the compressor IPM module of the refrigerant system. By utilizing at least two sections of pipelines, the IPM module can be fully radiated.
Furthermore, all pipelines passing through the same IPM module are uniformly distributed on the IPM module, so that the IPM module can be more uniformly and fully cooled, and a better cooling effect is realized.
As shown in fig. 5 and 6, all IPM modules in the machine set are combined in one electrical box, and a refrigerant heat dissipation loop extends from the pipeline a of the refrigerant system a, and the refrigerant in the refrigerant heat dissipation loop of the refrigerant system a flows through the IPM module 71, the water pump IPM module 73 and the fan IPM module 74 of the compressor 1 in the refrigerant system a. A refrigerant heat dissipation loop extends from the pipeline B of the refrigerant system B, and the refrigerant in the refrigerant heat dissipation loop of the refrigerant system B flows through the IPM module 72, the water pump IPM module 73 and the fan IPM module 74 of the compressor 1 in the refrigerant system B. In fig. 5 and fig. 6, only IPM modules of one fan are shown as an example, and in practical applications, the cooling medium heat dissipation circuit of each cooling medium system needs to flow through all the fan IPM modules. No matter which compressor in the refrigerant system is started, the fan IPM module and the water pump IPM module in the refrigerant system which is not started can have the refrigerant to flow through, and the IPM modules can be effectively cooled through refrigerant circulation. It should be noted that fig. 5 and 6 are only for better illustration of the present application and do not constitute an undue limitation to the present application.
EXAMPLE III
The embodiment of the utility model provides a still provide a unit, include: the heat dissipation device according to the above embodiment. Specifically, the assembly may include the heat dissipation device described in the first embodiment and/or the second embodiment.
Example four
The embodiment provides a heat dissipation control method, which is applied to a unit comprising at least two refrigerant systems, wherein all the refrigerant systems share a water pump, each refrigerant system respectively corresponds to at least one fan, all the fans are synchronously controlled, each refrigerant system is provided with a heat dissipation assembly 20, the heat dissipation assembly 20 of each refrigerant system and an IPM module 10 of the refrigerant system are connected in series to a refrigerant circulation loop 40 of the refrigerant system, the IPM module 10 is positioned in front of a throttling element 30 according to the flow direction of the refrigerant during operation, and the heat dissipation assembly 20 is positioned in front of the IPM module 10; the heat dissipation assembly 20 is configured to drive a refrigerant to circulate when a compressor of the refrigerant system is not turned on, so as to dissipate heat of the IPM module 10 of the refrigerant system through heat exchange between the refrigerant and the outside. The same or corresponding terms as those in the other embodiments are explained, and the description of the embodiment is omitted.
Fig. 7 is a flowchart of a heat dissipation control method according to a fourth embodiment of the present invention, as shown in fig. 7, the method includes the following steps:
and S701, determining that an unopened refrigerant system exists in the unit when the unit runs.
S702, according to the operating mode of the turned-on refrigerant system, the heat dissipation assembly 20 and the throttling element 30 in each refrigerant system are controlled to drive the refrigerant cycle to dissipate heat of the IPM module 10 in the turned-on refrigerant system.
Whether the refrigerant system is started or not can be determined by the starting and stopping state of the compressor, and specifically, if the compressor in the refrigerant system is started, the refrigerant system is considered to be started; if the compressor in the refrigerant system is not started, the refrigerant system is not started. In practical application, the compressor needing to be started can be determined according to the current load requirement of the unit. The working modes of the refrigerant system comprise a cooling mode and a heating mode.
In this embodiment, when the unit normally operates, if an unopened refrigerant system exists in the unit, the heat dissipation assembly 20 and the throttling element 30 in each refrigerant system are controlled according to the operating mode of the opened refrigerant system, and the throttling element 30 and the heat dissipation assembly 20 that need to be opened in each refrigerant system in different operating modes are different, so as to ensure that the opened refrigerant system normally refrigerates or heats, and for the unopened refrigerant system, the refrigerant circulation is driven by the heat dissipation assembly 20, and the fan IPM module in the unopened refrigerant system can continuously dissipate heat through heat exchange between the refrigerant and the external environment, so that the heat dissipation effect of the IPM module is ensured, the condition that the IPM module is too high in temperature is avoided, the reliability of the product is improved, and the after-sale failure rate is reduced.
Each refrigerant system may include: a heating throttling element 31 and a cooling throttling element 32; the heat dissipation assembly 20 in each refrigerant system includes: a first heat dissipating component 21 and a second heat dissipating component 22; first heat sink assembly 21 is connected in parallel with heating throttling element 31 and second heat sink assembly 22 is connected in parallel with cooling throttling element 32. The first heat dissipation assembly 21 and the second heat dissipation assembly 22 each include: a refrigerant pump 41 and a valve 42 connected in series.
Specifically, the method for controlling the heat dissipation assembly 20 and the throttling element 30 in each refrigerant system according to the operating mode of the opened refrigerant system includes:
if the working mode of the opened refrigerant system is the refrigeration mode, opening the refrigeration throttling element 32 in the refrigerant system which is not opened and the refrigerant pump and the valve in the first heat dissipation assembly 21, and opening the valve in the first heat dissipation assembly 21 in the opened refrigerant system;
if the operating mode of the activated cooling medium system is the heating mode, the heating throttling element 31 in the cooling medium system that is not activated and the cooling medium pump and the valve in the second heat dissipation assembly 22 are opened, and the valve in the second heat dissipation assembly 22 in the cooling medium system that is activated is opened.
To ensure proper throttling, in the cooling mode, the cooling throttling element 32 in the opened refrigerant system is opened, and in the heating mode, the heating throttling element 31 in the opened refrigerant system is opened. The valve in the first heat dissipation assembly 21 in the opened refrigerant system is opened in the cooling mode, and the valve in the second heat dissipation assembly 22 in the opened refrigerant system is opened in the heating mode, so that a refrigerant circulation channel can be provided, and the refrigerant can be ensured to smoothly circulate.
In the refrigeration mode, a refrigerant circulating channel can be provided by opening the refrigeration throttling element 32 in the unopened refrigerant system and the valve in the first heat dissipation assembly 21; by turning on the refrigerant pump in the first heat dissipation assembly 21 in the refrigerant system which is not turned on, power for refrigerant circulation can be provided, and the refrigerant can circulate along the channel under the driving of the refrigerant pump.
In the heating mode, a channel for refrigerant circulation can be provided by opening the heating throttling element 31 in the unopened refrigerant system and the valves in the second heat dissipation assembly 22; by turning on the refrigerant pump in the second heat dissipation assembly 22 in the refrigerant system that is not turned on, power for refrigerant circulation can be provided, and the refrigerant can circulate along the channel under the driving of the refrigerant pump.
According to the embodiment, through corresponding specific control in the working mode, normal refrigeration or heating of the started refrigerant system can be ensured, and effective heat dissipation of the IPM module in the unopened refrigerant system is ensured.
Referring to fig. 4, taking the refrigerant system a being turned on and the refrigerant system B not being turned on as an example, if the operating mode is the cooling mode, the cooling throttling element 32 in the refrigerant system a and the valve 42 in the first heat dissipation assembly 21 are turned on, so that the refrigerant in the refrigerant system a can smoothly circulate to achieve cooling; and the refrigeration throttling element 32 in the refrigerant system B, and the refrigerant pump 41 and the valve 42 in the first heat dissipation assembly 21 are opened to drive the refrigerant circulation in the refrigerant system B to dissipate heat of the fan IPM module in the refrigerant system B. If the working mode is a heating mode, the heating throttling element 31 in the refrigerant system a and the valve 42 in the second heat dissipation assembly 22 are opened, so that the refrigerant in the refrigerant system a can smoothly circulate to realize heating; and the heating throttling element 31 in the refrigerant system B, and the refrigerant pump 41 and the valve 42 in the second heat dissipation assembly 22 are opened to drive the refrigerant cycle in the refrigerant system B to dissipate heat of the fan IPM module in the refrigerant system B. The water pump IPM module can dissipate heat through refrigerant circulation of any refrigerant system. Through corresponding specific control in the working mode, normal refrigeration or heating of the started refrigerant system can be guaranteed, and effective heat dissipation of the fan IPM module in the refrigerant system which is not started is guaranteed.
The refrigerant heat dissipation also has the following problems: (1) Under the automatic anti-freezing working condition, the water pump continues to operate, and the compressor stops operating, so that the IPM module of the water pump does not dissipate heat through a refrigerant. (2) When the air conditioner is started, the water pump is started firstly, then the fan is started, finally the compressor is started, and the water pump IPM module and the fan IPM module do not dissipate heat through a refrigerant in the period of time that the water pump is started and the compressor is not started.
In order to solve the above problem, the method may further include: receiving a starting instruction or an automatic anti-freezing instruction; after detecting that a water pump in the unit is started, starting a target heat dissipation assembly in the unit, and starting a fan to drive a refrigerant to circulate, and dissipating heat of the IPM module through heat exchange between the refrigerant and the outside.
If the unit receives a starting instruction, when the unit is started, the water pump is started first, the fan is started again, the compressor is started finally, and in the period that the water pump is started and the compressor is not started, the cooling medium can be driven to circulate by starting the cooling assembly, so that the IPM module of the water pump is cooled. The fan is started, the refrigerant and the external environment can exchange heat better under the driving of the fan, the heat dissipation efficiency and the heat dissipation effect are improved, and meanwhile the IPM module of the fan can also be cooled through refrigerant circulation.
If the unit receives the automatic anti-freezing instruction, the water pump operates, the compressor stops, the cooling medium can be driven to circulate by opening the heat dissipation assembly, and the IPM module of the water pump dissipates heat. The fan is started, the refrigerant and the external environment can exchange heat better under the driving of the fan, the heat dissipation efficiency and the heat dissipation effect are improved, and meanwhile the IPM module of the fan can also be cooled through refrigerant circulation.
The embodiment is directed at the mode of just starting or automatically preventing frostbite, under the condition that the compressor is not opened, drives the refrigerant circulation through the heat dissipation assembly, and through the heat exchange of refrigerant and external environment, can continuously dissipate heat to the IPM module, guarantees the radiating effect of IPM module, avoids the IPM module high temperature, improves the reliability of products, reduces the failure rate after sale.
Each refrigerant system in the unit may include: a heating throttling element 31 and a cooling throttling element 32; the heat dissipation assembly 20 in each refrigerant system includes: a first heat dissipation assembly 21 and a second heat dissipation assembly 22; first heat sink assembly 21 is connected in parallel with heating throttling element 31 and second heat sink assembly 22 is connected in parallel with cooling throttling element 32. The first heat dissipation assembly 21 and the second heat dissipation assembly 22 each include: a refrigerant pump 41 and a valve 42 connected in series.
Specifically, open target radiator unit in the unit, include: a first heat dissipation assembly 21 or a second heat dissipation assembly 22 in any refrigerant system is taken as a target heat dissipation assembly; and (3) opening a refrigerant pump 41 and a valve 42 in the target heat radiation component, and opening a throttling element connected with the unopened heat radiation component in parallel in a refrigerant system where the target heat radiation component is located.
For example, the target heat dissipating assembly is the first heat dissipating assembly 21, the refrigerant pump 41 and the valve 42 in the first heat dissipating assembly 21 are opened, and the refrigeration throttling element 32 connected in parallel with the second heat dissipating assembly 22 is opened to provide power and a passage for the refrigerant to circulate.
In this embodiment, the first heat dissipation assembly 21 or the second heat dissipation assembly 22 in the same refrigerant system is turned on, so that the refrigerant cycle can be driven to dissipate heat; through the control to target radiator unit and corresponding throttling element, can guarantee the refrigerant smoothly circulates in refrigerant circulation circuit to realize the heat dissipation.
In one embodiment, a starting fan comprises: if the received command is a starting command, starting the fans in all the refrigerant systems; and if the received command is an automatic anti-freezing command, starting a fan in a refrigerant system where the target heat dissipation assembly is located.
If the received starting instruction is received, the starting is for normal operation, and all fans are synchronously controlled when the unit operates normally, so that all fans in the refrigerant system are started. If the received command is an automatic anti-freezing command, only one fan can be started in the automatic anti-freezing mode, so that the fan in the refrigerant system where the target heat dissipation assembly is located is started.
This embodiment starts corresponding fan to different instructions, can drive the better heat transfer of external environment and refrigerant, is favorable to the effective heat dissipation of IPM module.
In addition, if the unit includes only one refrigerant system, the following problems may also occur: (1) Under the automatic anti-freezing working condition, the water pump continues to operate, and the compressor stops operating, so that the IPM module of the water pump does not have the refrigerant for heat dissipation. (2) When the air conditioner is started, the water pump is started firstly, then the fan is started, finally the compressor is started, and the water pump IPM module and the fan IPM module do not dissipate heat through a refrigerant in the period of time that the water pump is started and the compressor is not started. In contrast, the IPM module can dissipate heat under an automatic anti-freezing condition and during startup by arranging the heat dissipation assembly in the refrigerant system.
Specifically, a starting instruction or an automatic anti-freezing instruction is received; after detecting that a water pump in the unit is started, starting a target heat dissipation assembly in the unit, and starting a fan to drive a refrigerant to circulate, and dissipating heat of the IPM module through heat exchange between the refrigerant and the outside. The unit only comprises one refrigerant system, and the first radiating assembly or the second radiating assembly in the refrigerant system is directly used as a target radiating assembly. If the received is a starting instruction, after starting a target heat dissipation assembly in the unit and starting the fan, the method further comprises the following steps: and when the compressor is detected to be started, starting is finished, the unit enters normal operation, and the throttling element and the radiating component in the refrigerant system are controlled according to the working mode of the unit so as to ensure the normal operation of the unit. Specifically, if the working mode is the refrigeration mode, the refrigeration throttling element 32 and the valve 42 in the first heat dissipation assembly 21 are opened, so that the refrigerant can smoothly circulate to realize refrigeration; if the operation mode is the heating mode, the heating throttling element 31 and the valve 42 in the second heat dissipation assembly 22 are opened, so that the refrigerant can smoothly circulate to realize heating.
The following describes the heat dissipation control of a unit including at least two refrigerant systems with reference to an embodiment, but it should be noted that the embodiment is only for better describing the present application and is not to be construed as a limitation of the present application. In the embodiment, the coolant is circulated by the coolant pump, and the coolant and the external environment are naturally cooled, so that the heat dissipation problem of the IPM module is solved, and the reliability of the product is improved.
As shown in fig. 8, taking the unit shown in fig. 4 as an example, the heat dissipation control includes the following steps:
and S801, starting a water pump.
S802, the compressors 1 in the refrigerant systems a and B are not turned on.
S803, the refrigerant pump and the valve in any heat dissipation assembly in any refrigerant system are opened, and the throttling element connected in parallel to another heat dissipation assembly in the refrigerant system is opened, for example, the refrigerant pump 41 and the valve 42 in the first heat dissipation assembly 21 of the refrigerant system a may be opened, and the refrigeration throttling element 32 in the refrigerant system a may be opened.
S804, start the fan in the refrigerant system where the refrigerant pump is turned on, for example, start the fan of the refrigerant system a.
And S805, entering an automatic anti-freezing mode.
And S806, synchronously starting all the fans.
S807, the compressor 1 of the refrigerant system a is turned on, and the compressor 1 of the refrigerant system B is not turned on.
And S808, judging the working mode of the unit.
And S809, a cooling mode.
S810, the refrigerant pump 41 and the valve 42 in the first heat dissipation assembly 21 of the refrigerant system B are opened, and the refrigeration throttling element 32 is opened; the valve 42 in the first heat sink assembly 21 of the refrigerant system a is opened and the refrigeration throttling element 32 is energized.
S811, heating mode.
S812, the refrigerant pump 41 and the valve 42 in the second heat dissipation assembly 22 of the refrigerant system B are opened, and the heating throttling element 31 is opened; the valve 42 in the second heat sink 22 of the refrigerant system a is opened and the heating throttling element 31 is powered.
S813, the compressor 1 of the refrigerant system a is not turned on, and the compressor 1 of the refrigerant system B is turned on.
And S814, judging the working mode of the unit.
And S815, a refrigeration mode.
S816, the refrigerant pump 41 and the valve 42 in the first heat dissipation assembly 21 of the refrigerant system a are opened, and the refrigeration throttling element 32 is opened; the valve 42 in the first heat sink assembly 21 of the refrigerant system B is opened and the refrigeration throttling element 32 is energized.
And S817, a heating mode.
S818, the refrigerant pump 41 and the valve 42 in the second heat dissipation assembly 22 of the refrigerant system a are opened, and the heating throttling element 31 is opened; the valve 42 in the second heat sink 22 of the refrigerant system B is opened and the heating throttling element 31 is powered.
And S819, the coolant enters natural cooling to dissipate heat of the IPM module.
S801 to S805 are heat dissipation control in the automatic anti-freezing mode, and when the compressor is not turned on, the refrigerant pump is used to circulate the refrigerant to exchange heat with the outside air driven by the fan, thereby ensuring heat dissipation of the water pump IPM module and the fan IPM module.
It should be noted that, when the IPM module is started, the water pump is started first, and during the period when the water pump is started and the compressor is not started, all the fans are started synchronously, and during this period, the refrigerant is circulated by the refrigerant pump in step S803 to exchange heat with the external environment, so as to ensure the heat dissipation of the IPM module of the water pump. It is worth noting that, when the cooling medium pump in any cooling component of any cooling medium system is turned on in S803, the cooling medium system without turning on the cooling medium pump has no cooling medium circulation, but the fan of the cooling medium systems is turned on, considering that the time from the fan to the compressor is turned on is short, at most 30 seconds, the power of the fan IPM module is relatively low in the period of time, the temperature of the fan IPM module is not very high, the reliability of the fan IPM module is not affected, and a fault is not reported, so that the heat dissipation of the fan IPM module in the cooling medium system without turning on the cooling medium pump in the period of time can be ignored.
S801 and S806-S819 are heat dissipation controls of the unit when the load is not large and only some compressors are turned on, and the throttling element and the heat dissipation assembly are specifically controlled according to the operating mode, so that normal cooling or heating of the turned-on refrigerant system can be guaranteed, and effective heat dissipation of the IPM module in the refrigerant system that is not turned on is guaranteed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a heat abstractor, is applied to the unit including two at least refrigerant systems, and all refrigerant systems share the water pump, and every refrigerant system corresponds at least one fan separately, all fan synchro control, its characterized in that:
each refrigerant system is provided with a heat dissipation assembly, and/or each refrigerant system is provided with a refrigerant heat dissipation loop;
under the condition that the coolant system is provided with the heat dissipation assembly, the heat dissipation assembly of each coolant system and the IPM module of the coolant system are connected to a coolant circulation loop of the coolant system in series, and according to the coolant flow direction during operation, the IPM module is positioned in front of the throttling element, and the heat dissipation assembly is positioned in front of the IPM module; the heat dissipation assembly is used for driving a refrigerant to circulate under the condition that a compressor of the refrigerant system is not started so as to dissipate heat of the IPM module of the refrigerant system through heat exchange between the refrigerant and the outside;
under the condition that the refrigerant system is provided with the refrigerant heat dissipation loop, the refrigerant heat dissipation loop of each refrigerant system passes through the water pump IPM module, all the fan IPM modules and the compressor IPM module of the refrigerant system.
2. The heat dissipation device of claim 1, wherein, in the case where the refrigerant system is provided with a heat dissipation assembly, the throttling element comprises: a heating throttling element and a cooling throttling element; said IPM module located between said heating throttle and said cooling throttle;
the heat dissipation assembly includes: a first heat dissipation assembly and a second heat dissipation assembly; the first heat dissipation assembly is connected with the heating throttling element in parallel, and the second heat dissipation assembly is connected with the refrigerating throttling element in parallel.
3. The heat dissipation device of claim 2, wherein the first heat dissipation assembly and the second heat dissipation assembly each comprise: refrigerant pump and valve connected in series.
4. The heat dissipating device of claim 1, wherein when the refrigerant system is provided with a refrigerant heat dissipating circuit, an inlet and an outlet of the refrigerant heat dissipating circuit are located in front of a throttling element of the refrigerant system according to a refrigerant flow direction during operation.
5. The heat dissipation device of claim 4, wherein the coolant system comprises: the air conditioner comprises a heating throttling element and a refrigerating throttling element, wherein one end of a refrigerant heat dissipation loop is connected to the heating throttling element, and the other end of the refrigerant heat dissipation loop is connected to the refrigerating throttling element.
6. The heat dissipation device of any one of claims 1 to 5, wherein when the refrigerant systems are provided with refrigerant heat dissipation circuits, at least two sections of pipes in the refrigerant heat dissipation circuit of each refrigerant system pass through the same IPM module in the water pump IPM module, all fan IPM modules, and the compressor IPM module of the refrigerant system.
7. The heat sink of claim 6, wherein all of the piping through the same IPM module is distributed evenly across the IPM module.
8. An assembly, comprising: the heat dissipating device of any of claims 1 to 7.
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| CN202221491437.6U CN217737487U (en) | 2022-06-15 | 2022-06-15 | Heat dissipation device and unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031384A (en) * | 2022-06-15 | 2022-09-09 | 珠海格力电器股份有限公司 | Heat dissipation device, heat dissipation unit, heat dissipation control method and heat dissipation control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031384A (en) * | 2022-06-15 | 2022-09-09 | 珠海格力电器股份有限公司 | Heat dissipation device, heat dissipation unit, heat dissipation control method and heat dissipation control device |
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