CN213273678U - Heat pump drying-machine with cubic subcooling function - Google Patents

Abstract

The utility model discloses a heat pump drying-machine with cubic subcooling function, including the compressor, the condenser that links to each other with the compressor and vapour and liquid separator, import and the export all with the evaporimeter of vapour and liquid separator intercommunication, the condenser is connected with the main line, the main line is connected with first branch pipe and second branch pipe, first branch pipe and second branch pipe all connect in same economizer, be provided with a thermal expansion valve on the first branch pipe, economizer and compressor intercommunication, economizer and vapour and liquid separator intercommunication, be provided with electronic expansion valve between the export of vapour and liquid separator and the import of evaporimeter. The utility model provides a heat pump drying-machine with cubic subcooling function when carrying out the use winter, can effectively reduce the compression ratio of compressor, promotes the stability of drying-machine operation, can also effectively improve the heating ability and the efficiency of drying-machine simultaneously, plays better stoving effect.

Description

Heat pump drying-machine with cubic subcooling function

Technical Field

The utility model belongs to the technical field of heat pump drying system technique and specifically relates to a heat pump drying-machine with cubic subcooling function is related to.

Background

The heat pump dryer is a professional device formed by combining a heat pump principle, an additional air supply system, a heat dissipation system and the like. According to the reverse Carnot cycle principle, a small amount of electric energy is consumed to drive the compressor to operate, high-pressure liquid working medium is evaporated into a gaseous state in the evaporator after passing through the expansion valve, the gaseous working medium is compressed into high-temperature and high-pressure gas by the compressor and then enters the condenser to release heat, and a drying medium is heated.

However, the heat pump dryer still has the following defects:

1. the existing normal-temperature heat pump dryer is only supercooled once, the low-temperature heat pump dryer is supercooled twice, and in the use process in winter, the heat pump dryer has large attenuation of heating capacity and low energy efficiency;

2. the compressor of the existing heat pump dryer is compressed more in the winter operation process, the product stability is poorer, and the service life of the product is greatly shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a heat pump drying-machine with cubic subcooling function has effectively promoted heat pump drying-machine at winter heating ability and efficiency, has still improved the stability of heat pump drying-machine when winter operation simultaneously.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a heat pump drying-machine with cubic subcooling function, includes the compressor, the condenser and the vapour and liquid separator that link to each other with the compressor, import and export all with the evaporimeter of vapour and liquid separator intercommunication, the condenser is connected with the main line, the main line is connected with first branch pipe and second branch pipe, first branch pipe and second branch pipe all connect in same economic ware, be provided with a thermal expansion valve on the first branch pipe, economic ware and compressor intercommunication send the refrigerant that first branch pipe sent into the compressor, economic ware and vapour and liquid separator intercommunication send the refrigerant that the second branch pipe sent into vapour and liquid separator, be provided with electronic expansion valve between the export of vapour and liquid separator and the import of evaporimeter.

Furthermore, a liquid storage device is arranged between the condenser and the main pipeline.

Furthermore, an evaporation fan is arranged on one side of the evaporator, and a condensation fan is arranged on one side of the condenser.

The utility model has the advantages as follows:

the product can be more suitable for being used in winter, the heating capacity and the energy efficiency of the product in winter are improved, the compression ratio of a compressor of the product during running in winter is reduced, and the stability of the product is improved; the high-temperature high-pressure refrigerant enters the economizer in two paths, the first path enters a first branch pipe and is subjected to throttling, temperature reduction and pressure reduction by a thermostatic expansion valve to form low-temperature low-pressure liquid, the second path enters a second branch pipe and is kept unchanged in the economizer to perform heat exchange with the first path, the second path of high-temperature high-pressure liquid refrigerant is subjected to temperature reduction and heat release for the second time, the process is secondary supercooling, the refrigerant after the second supercooling becomes medium-temperature high-pressure liquid and enters a gas-liquid separator, the process is tertiary supercooling after the heat exchange with the low-temperature low-pressure refrigerant in a gas return pipe of a compressor in the gas-liquid separator, the tertiary supercooling refrigerant becomes low-temperature high-pressure liquid and enters an electronic expansion valve, the electronic expansion valve is used for throttling, pressure reduction and temperature reduction on the refrigerant to enable the refrigerant to, the refrigerant is evaporated into a gas state with normal temperature and low pressure and enters the gas-liquid separator, the gas-liquid separator exchanges heat with the medium-temperature and high-pressure liquid refrigerant in the loop to further absorb heat, and then the gas-liquid separator enters the compressor to perform reciprocating circulation, so that the heating capacity of the heat pump dryer in winter is improved, the energy efficiency is improved, meanwhile, the heat pump dryer can run more stably, and the service life of the heat pump dryer is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a heat pump dryer;

reference numerals: the method comprises the following steps of 1-a compressor, 2-a condenser, 3-a liquid storage device, 4-an economizer, 5-a thermal expansion valve, 6-a gas-liquid separator, 7-an electronic expansion valve, 8-an evaporator, 9-a condensing fan and 10-an evaporating fan.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are conventionally placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "in communication" are to be interpreted broadly, e.g., as either fixed or removable communication, or integrally connected; either mechanically or electrically; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, the present embodiment provides a heat pump dryer with triple supercooling, including a compressor 1, a condenser 2 and a gas-liquid separator 6 connected to the compressor 1, and an evaporator 8 having an inlet and an outlet both communicated with the gas-liquid separator 6, wherein the compressor 1 compresses a refrigerant into a high-temperature high-pressure liquid state to enter the condenser 2, the condenser 2 is connected to a main pipeline for outputting the high-temperature high-pressure refrigerant after entering the condenser 2 for heat exchange, the main pipeline is connected to a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are both connected to a same economizer 4, the first branch pipe is provided with a thermostatic expansion valve 5, the economizer 4 is communicated with the compressor 1, the refrigerant sent by the first branch pipe is sent to the compressor 1, the economizer 4 is communicated with the gas-liquid separator 6, the refrigerant sent by the second branch pipe is sent to the gas-liquid separator 6, namely, the high-temperature high-pressure refrigerant entering the main pipeline from the condenser 2 is divided into two parts, the first part enters the first branch pipe, is subjected to throttling, temperature reduction and pressure reduction through the thermal expansion valve 5 to become low-temperature low-pressure liquid, then enters the economizer 4, the second part enters the second branch pipe, directly enters the economizer 4 through the second branch pipe to perform heat exchange with the first part, the second part is changed into medium-temperature high-pressure liquid, then enters the gas-liquid separator 6, the first part directly returns to the compressor 1 to participate in the next cycle, an electronic expansion valve 7 is arranged between the outlet of the gas-liquid separator 6 and the inlet of the evaporator 8, the medium-temperature high-pressure liquid refrigerant entering the gas-liquid separator 6 is subjected to throttling, pressure reduction and temperature reduction through the electronic expansion valve 7 to become low-temperature low-pressure Facet refrigerant, and then enters the evaporator 8 to perform heat exchange, the medium-temperature low-pressure gas enters the gas-liquid separator 6, and the heat exchange is carried out to absorb heat and the heat enters the compressor 1 to carry out the reciprocating cycle.

The working principle is as follows: as shown by the arrow direction in fig. 1, the refrigerant is compressed into a high-temperature high-pressure liquid state in the compressor 1 and enters the condenser 2, heat exchange (heat release of the refrigerant) is performed with flowing air in the condenser 2, the process of condensing the refrigerant into the high-temperature high-pressure liquid state is first supercooling, the high-temperature high-pressure refrigerant enters the liquid reservoir 3, the liquid reservoir 3 stores redundant refrigerant, the refrigerant enters the economizer 4 in two paths, the first path is throttled, cooled and depressurized by the thermostatic expansion valve 5 to become a low-temperature low-pressure liquid state, the second path is kept unchanged in the economizer 4 and performs heat exchange with the first path, the process of cooling and releasing heat of the second path is second supercooling, the refrigerant becomes a medium-temperature high-pressure liquid state after the second supercooling and enters the gas-liquid separator 6, and performs heat exchange with the low-temperature low-pressure refrigerant in the gas return pipe of the compressor 1 in, the third supercooling refrigerant becomes a low-temperature high-pressure liquid and enters an electronic expansion valve 7, the electronic expansion valve 7 throttles, reduces the pressure and the temperature of the refrigerant to enable the refrigerant to become a low-temperature low-pressure liquid and enter an evaporator 8, heat exchange is carried out between the low-temperature low-pressure liquid and flowing air in the evaporator 8 (the refrigerant absorbs heat in the air), the refrigerant is evaporated into a normal-temperature low-pressure gas and enters a gas-liquid separator 6, heat exchange is carried out between the gas-liquid separator 6 and the medium-temperature high-pressure liquid refrigerant in the loop to further absorb heat, and then the gas-liquid.

Wherein, still can set up reservoir 3 between condenser 2 and main line, utilize reservoir 3 to store unnecessary refrigerant to make subsequent two subcooling can be gone on slowly step by step. In addition, an evaporation fan 10 can be arranged on one side of the evaporator 8, and a condensation fan 9 is arranged on one side of the condenser 2, so that the heat exchange effect is further improved.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. A heat pump dryer with a triple supercooling function is characterized by comprising a compressor (1), a condenser (2) and a gas-liquid separator (6) which are connected with the compressor (1), an evaporator (8) of which the inlet and the outlet are communicated with the gas-liquid separator (6), the condenser (2) is connected with a main pipeline, the main pipeline is connected with a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are both connected with the same economizer (4), the first branch pipe is provided with a thermostatic expansion valve (5), the economizer (4) is communicated with the compressor (1) and used for sending the refrigerant sent by the first branch pipe into the compressor (1), the economizer (4) is communicated with the gas-liquid separator (6), the refrigerant sent by the second branch pipe is sent into the gas-liquid separator (6), an electronic expansion valve (7) is arranged between the outlet of the gas-liquid separator (6) and the inlet of the evaporator (8).

2. Heat pump dryer with triple subcooling function according to claim 1, characterized in that an accumulator (3) is provided between the condenser (2) and the main circuit.

3. The heat pump dryer with the triple subcooling function according to claim 2, characterized in that the evaporator (8) side is provided with an evaporation fan (10) and the condenser (2) side is provided with a condensation fan (9).

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