Supercooling ice suppression device of low-temperature frequency conversion module unit

Abstract

The utility model relates to a supercooling ice suppression device of a low-temperature frequency conversion module unit, which is characterized in that a finned heat exchanger is provided with a plurality of heat exchange pipes, the right ends of the heat exchange pipes are connected in pairs through elbows, a supercooling inlet pipe branch pipe is connected with the left end of the corresponding heat exchange pipe, and a supercooling outlet pipe branch pipe is connected with the left end of the corresponding heat exchange pipe; the other end of the supercooling inlet pipe is connected with one end of a first heat regeneration connecting pipe, the other end of the first heat regeneration connecting pipe is connected with one end of a heat regeneration pipe, the middle of the heat regeneration pipe is embedded in a heat regeneration pipe installation groove formed in the heat dissipation block, the other end of the heat regeneration pipe is connected into a main system, and the other end of the supercooling outlet pipe is connected with one end of a second heat regeneration connecting pipe. And the other end of the second backheating connecting pipe is connected into the main system. The device can effectively restrain freezing of condensate water, guarantees stable operation of a unit, and further has the advantages of being simple in structure, convenient to install, reliable in operation and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to belong to low temperature variable frequency module unit technical field, the utility model discloses a kind of low temperature variable frequency module unit supercooling ice inhibition device. BACKGROUND

[0002] Energy conservation and emission reduction is our country's basic national policy, using air-cooled heat pump unit to replace coal-fired boiler has become the trend, and variable frequency module unit is more energy-saving than fixed frequency module unit, and variable frequency unit becomes the first choice of user.

[0003] Now variable frequency module unit runs in northern low temperature climate, and the condensate water of unit is easily gathered icing and forms ice accumulation phenomenon in the bottom of finned heat exchanger under the influence of climate condition, thereby affecting unit heat exchange, and in serious case, ice accumulation can damage the finned heat exchanger and related sheet metal parts of unit, causing certain economic loss. SUMMARY

[0004] The utility model discloses a kind of low temperature variable frequency module unit supercooling ice inhibition devices, which can effectively inhibit condensate water icing, and provide guarantee for the stable operation of unit.

[0005] According to the technical scheme provided by the utility model, the low temperature variable frequency module unit supercooling ice inhibition device includes finned heat exchanger, heat exchange pipe, elbow, supercooling inlet pipe, supercooling outlet pipe, first heat recovery connecting pipe, heat recovery pipe, second heat recovery connecting pipe, frequency converter assembly, main system and heat dissipation block.

[0006] One end of the supercooling inlet pipe is provided with a plug, and a plurality of supercooling inlet pipe branch pipes are installed on the supercooling inlet pipe close to the plug.

[0007] A heat dissipation block is fixed on the back of the frequency converter assembly, and a heat recovery pipe mounting groove is formed in the heat dissipation block.

[0008] The finned heat exchanger has a plurality of heat exchange pipes, the outer surface of the heat exchange pipe is fixed with fins, the number of heat exchange pipes is equal to the sum of the number of supercooling inlet pipe branch pipes and the number of supercooling outlet pipe branch pipes, the right end of the heat exchange pipe is connected by elbow welding two by two, the left end of the corresponding heat exchange pipe is connected with the supercooling inlet pipe branch pipe, and the left end of the corresponding heat exchange pipe is connected with the supercooling outlet pipe branch pipe.

[0009] The other end of the supercooling inlet pipe is connected with one end of the first heat recovery connecting pipe, the other end of the first heat recovery connecting pipe is connected with one end of the heat recovery pipe, the middle part of the heat recovery pipe is embedded in the heat recovery pipe mounting groove formed in the heat dissipation block, and the other end of the heat recovery pipe is connected with the main system.

[0010] The other end of the subcooled outlet pipe is connected to one end of the second regenerative connection pipe, and the other end of the second regenerative connection pipe is connected to the main system.

[0011] Preferably, the sum of the cross-sectional areas of all the subcooled inlet branches is equal to the cross-sectional area of ​​the subcooled inlet.

[0012] Preferably, the sum of the cross-sectional areas of all the subcooled outlet branches is equal to the cross-sectional area of ​​the subcooled outlet.

[0013] This invention can effectively suppress the freezing of condensate, ensuring the stable operation of the unit. It also has the advantages of simple structure, convenient installation and reliable operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the subcooling inlet pipe in this utility model.

[0016] Figure 3 This is a schematic diagram of the subcooling outlet pipe in this utility model.

[0017] Figure 4 This is an assembly diagram of the heat recovery pipe and heat sink in this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] A low-temperature variable frequency modular unit subcooling and ice suppression device, such as Figures 1-4 As shown, it includes a finned heat exchanger 1, a heat exchange tube 2, an elbow 3, a subcooled inlet pipe 4, a subcooled outlet pipe 5, a first regenerative connection pipe 6, a regenerative pipe 7, a second regenerative connection pipe 8, a frequency converter assembly 9, a main system 10, and a heat sink 11.

[0020] One end of the subcooling inlet pipe 4 is provided with a plug, and several subcooling inlet branch pipes 4.1 are installed on the subcooling inlet pipe 4 near the plug. One end of the subcooling outlet pipe 5 is provided with a plug, and several subcooling outlet branch pipes 5.1 are installed on the subcooling outlet pipe 5 near the plug. The number of subcooling outlet branch pipes 5.1 is equal to the number of subcooling inlet branch pipes 4.1.

[0021] A heat dissipation block 11 is fixed on the back of the frequency converter assembly 9, and a regenerative pipe installation slot is formed in the heat dissipation block 11;

[0022] The finned heat exchanger 1 has a plurality of heat exchange pipes 2, the outer surfaces of the heat exchange pipes 2 are fixed with fins, the number of the heat exchange pipes 2 is equal to the sum of the number of the supercooling inlet pipe branch pipes 4.1 and the number of the supercooling outlet pipe branch pipes 5.1, the right ends of the heat exchange pipes 2 are connected by elbows 3 in pairs, the supercooling inlet pipe branch pipes 4.1 are connected with the left ends of the corresponding heat exchange pipes 2, and the supercooling outlet pipe branch pipes 5.1 are connected with the left ends of the corresponding heat exchange pipes 2;

[0023] The other end of the supercooling inlet pipe 4 is connected with one end of the first regenerative connecting pipe 6, the other end of the first regenerative connecting pipe 6 is connected with one end of the regenerative pipe 7, the middle part of the regenerative pipe 7 is embedded in the regenerative pipe installation slot formed in the heat dissipation block 11, and the other end of the regenerative pipe 7 is connected with the main system 10.

[0024] The other end of the supercooling outlet pipe 5 is connected with one end of the second regenerative connecting pipe 8, and the other end of the second regenerative connecting pipe 8 is connected with the main system 10.

[0025] The sum of the cross-sectional areas of all the supercooling inlet pipe branch pipes 4.1 is equal to the cross-sectional area of the supercooling inlet pipe 4, so as to ensure the system flow.

[0026] The sum of the cross-sectional areas of all the supercooling outlet pipe branch pipes 5.1 is equal to the cross-sectional area of the supercooling outlet pipe 5, so as to ensure the system flow.

[0027] In the utility model, the main system 10 is mainly composed of a compressor, a four-way reversing valve and an evaporator and the like.

[0028] In the utility model, the two heat dissipation blocks 11 fixed on the back of the frequency converter assembly 9 are stacked together, and two semicircular regenerative pipe installation slots are formed in each heat dissipation block 11.

[0029] In the utility model, the heat exchange pipes 2 are straight-through pipes, and cup mouths are arranged at the two ends of the heat exchange pipes 2 to ensure the stability of assembly and facilitate pipe welding; the span of the copper elbows 3 is consistent with the hole span of the end plate of the finned heat exchanger 1, and the outer diameter of the elbows 3 is consistent with the inner diameter of the cup mouths of the heat exchange pipes 2.

[0030] The utility model discloses a low-temperature and low-pressure gas refrigerant is compressed and expands to high-temperature and high-pressure gas discharge through compressor, flows to finned heat exchanger 1 through four -way reversing valve, and heat exchange is carried out between refrigerant and air through heat exchange pipe 2 and fin, (when finned heat exchanger 1 works, water vapor in air can condense into water and flow to the bottom of finned heat exchanger 1 through the fin on heat exchange pipe 2, and water can freeze in the bottom of finned heat exchanger 1 when ambient temperature is low) make refrigerant condense and become low-temperature and high-pressure liquid state, and this liquid refrigerant absorbs the heat of frequency converter assembly 9 after flowing through frequency converter assembly 9 (frequency converter assembly 9 can produce a large amount of heat in the working process, and the temperature can reach 90 DEG C), make the temperature of refrigerant in regenerative tube 7 improve, thereby radiate heat for frequency converter assembly 9, and the refrigerant after temperature improvement enters the heat exchange pipe 2 in the bottom of finned heat exchanger 1 through first regenerative connecting pipe 6, supercooling inlet pipe 4, supercooling inlet pipe branch pipe 4.1, and refrigerant radiates heat and reaches deicing effect, and liquid refrigerant further throttles into low-temperature and low-pressure liquid through expansion valve after supercooling outlet pipe 5, second regenerative connecting pipe 8, and this low-temperature and low-pressure liquid enters evaporator in main system 10 and exchanges heat with medium, make low-temperature and low-pressure liquid refrigerant evaporate into low-temperature and low-pressure gas and return to compressor.

[0031] Finally, it should be explained that the above specific embodiments are only used to illustrate the technical scheme of the utility model and not to limit, although the utility model is described in detail with reference to examples, those skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical scheme of the utility model, and they should be covered in the claim range of the utility model.

Claims

1. A low-temperature variable frequency modular unit subcooling and ice suppression device, characterized in that: It includes a finned heat exchanger (1), heat exchange tubes (2), elbows (3), subcooled inlet pipes (4), subcooled outlet pipes (5), first regenerative connection pipes (6), regenerative pipes (7), second regenerative connection pipes (8), frequency converter assembly (9), main system (10), and heat sink (11). One end of the subcooled inlet pipe (4) is provided with a plug, and several subcooled inlet branch pipes (4.1) are installed on the subcooled inlet pipe (4) near the plug. One end of the subcooled outlet pipe (5) is provided with a plug, and several subcooled outlet branch pipes (5.1) are installed on the subcooled outlet pipe (5) near the plug. The number of subcooled outlet branch pipes (5.1) is equal to the number of subcooled inlet branch pipes (4.1). A heat sink (11) is fixed on the back of the inverter assembly (9), and a heat return pipe mounting groove is provided on the heat sink (11); The finned heat exchanger (1) has several heat exchange tubes (2). Fins are fixed on the outer surface of the heat exchange tubes (2). The number of heat exchange tubes (2) is equal to the sum of the number of subcooled inlet branch pipes (4.1) and the number of subcooled outlet branch pipes (5.1). The right ends of the heat exchange tubes (2) are connected by elbows (3) in pairs. The subcooled inlet branch pipe (4.1) is connected to the left end of the corresponding heat exchange tube (2), and the subcooled outlet branch pipe (5.1) is connected to the left end of the corresponding heat exchange tube (2). The other end of the subcooling inlet pipe (4) is connected to one end of the first heat recovery connection pipe (6), the other end of the first heat recovery connection pipe (6) is connected to one end of the heat recovery pipe (7), the middle part of the heat recovery pipe (7) is embedded in the heat recovery pipe mounting groove opened on the heat sink (11), and the other end of the heat recovery pipe (7) is connected to the main system (10). The other end of the subcooled outlet pipe (5) is connected to one end of the second regenerating connection pipe (8), and the other end of the second regenerating connection pipe (8) is connected to the main system (10).

2. The low-temperature inverter module unit subcooling and ice suppression device as described in claim 1, characterized in that: The sum of the cross-sectional areas of all the subcooled inlet branches (4.1) is equal to the cross-sectional area of ​​the subcooled inlet (4).

3. The low-temperature variable frequency module unit subcooling and ice suppression device as described in claim 1, characterized in that: The sum of the cross-sectional areas of all the subcooled outlet branches (5.1) is equal to the cross-sectional area of ​​the subcooled outlet (5).

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