High-temperature heat pump unit system

Abstract

The utility model discloses a high-temperature heat pump unit system, and relates to the technical field of industrial refrigeration devices. The oil separator is communicated with an exhaust port of the compressor, and an oil return pipeline is communicated between the oil separator and the compressor; the condenser is communicated with the oil separator; the flash tank is respectively communicated with the condenser and the compressor, and the flash tank is used for conveying the liquid refrigerant conveyed by the condenser into the compressor through evaporation; and the evaporator is connected with the air suction pipe of the compressor and the flash tank respectively. The heat pump unit solves the technical problem that an existing heat pump unit is high in energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial refrigeration devices, in particular to a high-temperature heat pump unit system. Background Art

[0002] In the field of industrial equipment manufacturing and heating heat exchange, the energy efficiency requirements for refrigeration units are getting higher and higher. In order to improve the energy efficiency of the units, an economizer is often configured on the refrigeration units in the industry to improve the energy efficiency coefficient of the refrigeration units.

[0003] In order to ensure energy consumption, the existing method is to add a heat exchanger and an economizer to the whole system. However, it is very difficult to improve the energy efficiency of the whole system in this way, because most of the refrigerant still needs to be processed through the evaporator, so the energy consumption is still very high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-temperature heat pump unit system, which solves the technical problem of high energy consumption of the existing heat pump unit.

[0005] The embodiment of the present application discloses a high-temperature heat pump unit system, including:

[0006] A compressor;

[0007] An oil separator, which is communicated with the exhaust port of the compressor, and an oil return pipeline is communicated between the oil separator and the compressor;

[0008] A condenser, which is communicated with the oil separator;

[0009] A flash tank, which is respectively communicated with the condenser and the compressor, and the flash tank is used for sending the liquid refrigerant conveyed by the condenser into the compressor through evaporation;

[0010] An evaporator, which is respectively connected with the suction pipe of the compressor and the flash tank.

[0011] The present application adds a flash tank to reduce the energy consumption of the subsequent evaporator. At the same time, the present application is also provided with a regenerator, which can further reduce the energy consumption of the evaporator, thereby reducing the energy consumption of the whole system.

[0012] On the basis of the above technical solutions, the embodiment of the present application can also be improved as follows:

[0013] Further, a first dryer filter and a high-temperature electronic expansion valve are communicated between the condenser and the flash tank. The beneficial effect of this step is to ensure the quality of the refrigerant through the dryer filter.

[0014] Further, a second drying filter is connected between the flash tank and the evaporator. The beneficial effect of this step is that the quality of the refrigerant can be further ensured through the second drying filter.

[0015] Further, a control branch is connected to the evaporator, and a normal-temperature electronic expansion valve is connected to the control branch. The beneficial effect of this step is to achieve the inlet quantity control through the control branch, and at the same time ensure the stable operation of the entire system through the normal-temperature electronic expansion valve.

[0016] Further, a bypass branch is connected in parallel to the outside of the first drying filter and the second drying filter. The beneficial effect of this step is that it can provide users with the option of whether to add the drying filter to the entire system.

[0017] Further, the evaporator is a flooded evaporator.

[0018] Further, the gas discharged from the exhaust port of the compressor is high-temperature and high-pressure gas, and the gas pressure is not less than 1.0 MPa, and the temperature is not lower than 120 °C.

[0019] Further, a cooling spray pipe is connected between the compressor and the evaporator. The beneficial effect of this step is that it can reduce the temperature of the compressor.

[0020] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0021] 1. The present application is additionally provided with a flash tank for reducing the energy consumption of the subsequent evaporator, thereby saving energy.

[0022] 2. The present application is used for the treatment of high-temperature and high-pressure gas, which can reduce the power consumption of the subsequent evaporator and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of a high-temperature heat pump unit system according to a specific embodiment of the present invention;

[0025] 1 - Compressor; 2 - Oil separator; 3 - Oil return pipeline; 4 - Condenser; 5 - Flash tank; 6 - Regenerator; 7 - Evaporator; 8 - First drying filter; 9 - High-temperature electronic expansion valve; 10 - Second drying filter; 11 - Normal-temperature electronic expansion valve; 12 - Bypass branch; 13 - Cooling spray pipeline. Specific embodiments

[0026] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and therefore are only examples and cannot be used to limit the protection scope of the present utility model.

[0027] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.

[0028] In this application, unless otherwise clearly specified and limited, terms such as "installation", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] To better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0030] Embodiment:

[0031] As Figure 1 shown, this application discloses a high-temperature heat pump unit system, specifically applied to an industrial water-cooled high-temperature unit. Part of the liquid condensed in the condenser is directly introduced into the compressor through the treatment of the flash tank, reducing the working energy consumption of the evaporator, thereby saving energy.

[0032] The specific structure of this application is as follows, including:

[0033] A compressor 1, which is an existing industrial compressor, and the discharged gas is high-temperature and high-pressure gas;

[0034] An oil separator 2, the refrigerant inlet of the oil separator 2 is communicated with the exhaust port of the compressor 1, and an oil return pipeline 3 is communicated between the oil separator 2 and the compressor 1. The oil separator 2 is used to separate the lubricating oil of the high-temperature and high-pressure gas;

[0035] A condenser 4, the refrigerant inlet of the condenser 4 is connected to the refrigerant outlet of the oil separator 2, and the gas processed by the oil separator 2 enters the condenser for condensation processing;

[0036] A flash tank 5, the inlet of the flash tank 5 is connected to the refrigerant outlet of the condenser, the outlet of the flash tank 5 is connected to the intake port of the compressor 1, and the flash tank 5 is used to send the liquid refrigerant transported by the condenser 4 into the compressor 1 through evaporation. In the existing technology, the condensed refrigerant of the condenser 4 is usually sent to an evaporator for evaporation processing and then sent to the compressor 1. In this application, a flash tank 5 is connected in series, and the flash tank 5 is used for partial processing and then sent to the compressor 1, so as to reduce the energy efficiency of the subsequent evaporator part;

[0037] An evaporator 7, which is respectively connected to the suction pipe of the compressor 1 and the flash tank 5, so as to further reduce the energy consumption of the evaporator 7 and thus reduce the energy consumption of the entire system.

[0038] Specifically, a first drying filter 8 and a high-temperature electronic expansion valve 9 are connected between the condenser 4 and the flash tank 5, a second drying filter 10 is connected between the flash tank 5 and the evaporator 7, a control branch 6 is connected to the evaporator 7, and a normal-temperature electronic expansion valve 11 is connected to the control branch 6. In this application, through the mutual cooperation of each component, the conduction of the pipelines between each component is ensured.

[0039] Specifically, a bypass branch 12 is connected in parallel outside the first drying filter 8 and the second drying filter 10, and a valve is connected to this bypass branch 12 and is enabled according to requirements, which is used to ensure the quality of the refrigerant and thus ensure its stable long-term use; taking the first drying filter 8 as an example, specifically, one end of this bypass branch 12 is connected to the inlet of the first drying filter 8, and the other end is connected to the outlet of the first drying filter 8; similarly, the bypass branch 12 of the second drying filter 10 is the same.

[0040] Among them, the evaporator 7 is a flooded evaporator.

[0041] In this application, the gas discharged from the exhaust port of the compressor 1 is high-temperature and high-pressure gas, the gas pressure is not less than 1.0 MPa, and the temperature is not lower than 120 °C; this application is for the treatment of high-temperature and high-pressure gas, which can reduce the power consumption of the subsequent evaporator and save energy.

[0042] Specifically, a cooling spray pipeline 13 is connected between the compressor 1 and the evaporator 7, and this cooling spray pipeline 13 can facilitate the cooling of the compressor 1.

[0043] This application designs the entire system and adds a flash tank 5 to reduce the energy consumption of the subsequent evaporator, thereby reducing the energy consumption of the entire system.

[0044] In the description of the present utility model, a large number of specific details are illustrated. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this description.

[0045] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the description of the present utility model.

Claims

1. A high-temperature heat pump unit system, characterized in that, Comprising: A compressor; An oil separator, which is communicated with the exhaust port of the compressor, and an oil return pipeline is communicated between the oil separator and the compressor; A condenser, which is communicated with the oil separator; A flash tank, which is respectively communicated with the condenser and the compressor, and the flash tank is used for sending the liquid refrigerant conveyed by the condenser into the compressor through evaporation; An evaporator, which is respectively connected to the suction pipe of the compressor and the flash tank.

2. The high-temperature heat pump unit system according to claim 1, characterized in that, A first drying filter and a high-temperature electronic expansion valve are communicated between the condenser and the flash tank.

3. The high-temperature heat pump unit system according to claim 2, characterized in that, A second drying filter is communicated between the flash tank and the evaporator.

4. The high-temperature heat pump unit system according to claim 3, characterized in that, A control branch is communicated with the evaporator, and a normal-temperature electronic expansion valve is communicated on the control branch.

5. The high-temperature heat pump unit system according to claim 4, characterized in that A bypass branch is connected in parallel on the outer sides of the first drying filter and the second drying filter.

6. The high-temperature heat pump unit system according to claim 1, characterized in that, The evaporator is a flooded evaporator.

7. The high-temperature heat pump unit system according to claim 1, wherein, The gas discharged from the exhaust port of the compressor is high-temperature and high-pressure gas, the gas pressure is not less than 1.0 MPa, and the temperature is not lower than 120 °C.

8. The high-temperature heat pump unit system according to claim 1, characterized in that, A cooling liquid injection pipeline is communicated between the compressor and the evaporator.

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